temporary undoing of renaming

439 files changed, 20247 insertions, 0 deletions

diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..89b65a1
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,34 @@
+==========================================================================
+Copyright License
+==========================================================================
+
+Copyright (c) 2008, Christopher Batten
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+   notice, this list of conditions, and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions, and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+ * Neither the name of the Massachusetts Institute of Technology nor the
+   names of its contributors may be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY Christopher Batten ''AS IS'' AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Christopher Batten BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+THE POSSIBILITY OF SUCH DAMAGE.
+
diff --git a/Makefile.in b/Makefile.in
new file mode 100644
index 0000000..53dfb60
--- /dev/null
+++ b/Makefile.in
@@ -0,0 +1,466 @@
+#=========================================================================
+# Toplevel Makefile for the Modular C++ Build System
+#=========================================================================
+# Please read the documenation in 'mcppbs-doc.txt' for more details on
+# how the Modular C++ Build System works. For most projects, a developer
+# will not need to make any changes to this makefile. The key targets
+# are as follows:
+#
+#  - default   : build all libraries and programs
+#  - check     : build and run all unit tests
+#  - install   : install headers, project library, and some programs
+#  - clean     : remove all generated content (except autoconf files)
+#  - dist      : make a source tarball
+#  - distcheck : make a source tarball, untar it, check it, clean it
+#  - distclean : remove everything
+#
+
+#-------------------------------------------------------------------------
+# Basic setup
+#-------------------------------------------------------------------------
+
+# Remove all default implicit rules since they can cause subtle bugs
+# and they just make things run slower
+.SUFFIXES:
+% : %,v
+% : RCS/%,v
+% : RCS/%
+% : s.%
+% : SCCS/s.%
+
+# Default is to build the prereqs of the all target (defined at bottom)
+default : all
+.PHONY : default
+
+project_name := @PACKAGE_TARNAME@
+src_dir      := @srcdir@
+scripts_dir  := $(src_dir)/scripts
+
+# If the version information is not in the configure script, then we
+# assume that we are in a working directory. We use the vcs-version.sh
+# script in the scripts directory to generate an appropriate version
+# string. Currently the way things are setup we have to run this script
+# everytime we run make so the script needs to be as fast as possible.
+
+ifeq (@PACKAGE_VERSION@,?)
+  project_ver:=$(shell $(scripts_dir)/vcs-version.sh $(src_dir))
+else
+  project_ver:=@PACKAGE_VERSION@
+endif
+
+# Installation directories
+
+prefix       := @prefix@
+enable_stow  := @enable_stow@
+
+ifeq ($(enable_stow),yes)
+  stow_pkg_dir := $(prefix)/pkgs
+  DESTDIR ?= $(stow_pkg_dir)/$(project_name)-$(project_ver)
+else
+  DESTDIR ?= $(prefix)
+endif
+
+install_hdrs_dir := $(DESTDIR)/include/$(project_name)
+install_libs_dir := $(DESTDIR)/lib/$(project_name)
+install_exes_dir := $(DESTDIR)/bin
+
+#-------------------------------------------------------------------------
+# List of subprojects
+#-------------------------------------------------------------------------
+
+sprojs         := @subprojects@
+sprojs_enabled := @subprojects_enabled@
+
+sprojs_include := -I. $(addprefix -I$(src_dir)/, $(sprojs_enabled))
+VPATH := $(addprefix $(src_dir)/, $(sprojs_enabled))
+
+#-------------------------------------------------------------------------
+# Programs and flags 
+#-------------------------------------------------------------------------
+
+# C++ compiler
+#  - CPPFLAGS : flags for the preprocessor (eg. -I,-D)
+#  - CXXFLAGS : flags for C++ compiler (eg. -Wall,-g,-O3)
+
+CC            := @CC@
+CXX           := @CXX@
+CPPFLAGS      := @CPPFLAGS@
+CXXFLAGS      := @CXXFLAGS@
+COMPILE       := $(CXX) -MMD -MP $(CPPFLAGS) $(CXXFLAGS) \
+                 $(sprojs_include)
+COMPILE_C     := $(CC)  -MMD -MP $(CPPFLAGS) $(CXXFLAGS) \
+                 $(sprojs_include)
+# Linker
+#  - LDFLAGS : Flags for the linker (eg. -L)
+#  - LIBS    : Library flags (eg. -l)
+
+LD            := $(CXX)
+LDFLAGS       := @LDFLAGS@
+LIBS          := @LIBS@
+LINK          := $(LD) $(LDFLAGS) 
+
+# Library creation
+
+AR            := @AR@
+RANLIB        := @RANLIB@
+
+# Host simulator
+
+RUN           := @RUN@
+RUNFLAGS      := @RUNFLAGS@
+
+# Installation
+
+MKINSTALLDIRS := $(scripts_dir)/mk-install-dirs.sh
+INSTALL       := @INSTALL@
+INSTALL_HDR   := $(INSTALL) -m 444
+INSTALL_LIB   := $(INSTALL) -m 644
+INSTALL_EXE   := $(INSTALL) -m 555
+STOW          := @stow@
+
+#-------------------------------------------------------------------------
+# Include subproject makefile fragments
+#-------------------------------------------------------------------------
+
+sprojs_mk = $(addsuffix .mk, $(sprojs_enabled))
+
+-include $(sprojs_mk)
+
+dist_junk += $(sprojs_mk)
+
+#-------------------------------------------------------------------------
+# Reverse list helper function
+#-------------------------------------------------------------------------
+# This function is used by the subproject template to reverse the list
+# of dependencies. It uses recursion to perform the reversal.
+# 
+# Arguments:
+#  $(1)   : space separated input list
+#  retval : input list in reverse order
+#
+
+reverse_list = $(call reverse_list_h,$(1),)
+define reverse_list_h
+  $(if $(strip $(1)),                        \
+    $(call reverse_list_h,                   \
+           $(wordlist 2,$(words $(1)),$(1)), \
+           $(firstword $(1)) $(2)),          \
+    $(2))
+endef
+
+#-------------------------------------------------------------------------
+# Template for per subproject rules
+#-------------------------------------------------------------------------
+# The template is instantiated for each of the subprojects. It relies on
+# subprojects defining a certain set of make variables which are all
+# prefixed with the subproject name. Since subproject names can have
+# dashes in them (and the make variables are assumed to only use
+# underscores) the template takes two arguments - one with the regular 
+# subproject name and one with dashes replaced with underscores.
+#
+# Arguments:
+#  $(1) : real subproject name (ie with dashes)
+#  $(2) : normalized subproject name (ie dashes replaced with underscores)
+#
+
+define subproject_template
+
+# In some (rare) cases, a subproject might not have any actual object
+# files. It might only include header files or program sources. To keep
+# things consistent we still want a library for this subproject, so in
+# this spectial case we create a dummy source file and thus the build
+# system will create a library for this subproject with just the
+# corresponding dummy object file.
+
+ifeq ($$(strip $$($(2)_srcs) $$($(2)_c_srcs)),)
+$(2)_srcs += _$(1).cc
+$(2)_junk += _$(1).cc
+endif
+
+_$(1).cc :
+	echo "int _$(2)( int arg ) { return arg; }" > $$@
+
+# Build the object files for this subproject
+
+$(2)_objs := $$(patsubst %.cc, %.o, $$($(2)_srcs))
+$(2)_c_objs := $$(patsubst %.c, %.o, $$($(2)_c_srcs))
+$(2)_deps := $$(patsubst %.o, %.d, $$($(2)_objs))
+$(2)_c_deps := $$(patsubst %.o, %.d, $$($(2)_c_objs))
+$$($(2)_objs) : %.o : %.cc
+	$(COMPILE) -c $$<
+$$($(2)_c_objs) : %.o : %.c
+	$(COMPILE_C) -c $$<
+
+$(2)_junk += $$($(2)_objs) $$($(2)_c_objs) $$($(2)_deps) $$($(2)_c_deps)
+
+# Build a library for this subproject
+
+lib$(1).a : $$($(2)_objs) $$($(2)_c_objs)
+	$(AR) rcv $$@ $$^
+	$(RANLIB) $$@
+
+$(2)_junk += lib$(1).a
+
+# Reverse the dependency list so that a given subproject only depends on
+# subprojects listed to its right. This is the correct order for linking
+# the list of subproject libraries.
+
+$(2)_reverse_deps   := $$(call reverse_list,$$($(2)_subproject_deps))
+
+# Build unit tests
+
+$(2)_test_objs      := $$(patsubst %.cc, %.o, $$($(2)_test_srcs))
+$(2)_test_deps      := $$(patsubst %.o, %.d, $$($(2)_test_objs))
+$(2)_test_exes      := $$(patsubst %.t.cc, %-utst, $$($(2)_test_srcs))
+$(2)_test_outs      := $$(patsubst %, %.out, $$($(2)_test_exes))
+$(2)_test_libs      := $(1) $$($(2)_reverse_deps) utst
+$(2)_test_libnames  := $$(patsubst %, lib%.a, $$($(2)_test_libs))
+$(2)_test_libarg    := -L. $$(patsubst %, -l%, $$($(2)_test_libs))
+
+$$($(2)_test_objs) : %.o : %.cc
+	$(COMPILE) -c $$<
+
+$$($(2)_test_exes) : %-utst : %.t.o $$($(2)_test_libnames)
+	$(LINK) -o $$@ $$< $$($(2)_test_libarg) $(LIBS)
+
+$(2)_deps += $$($(2)_test_deps)
+$(2)_junk += \
+	$$($(2)_test_objs) $$($(2)_test_deps) \
+  $$($(2)_test_exes) *.junk-dat
+
+# Run unit tests
+
+$$($(2)_test_outs) : %.out : %
+	$(RUN) $(RUNFLAGS) ./$$< default | tee $$@
+
+$(2)_junk += $$($(2)_test_outs)
+
+# Build programs
+
+$(2)_prog_objs      := $$(patsubst %.cc, %.o, $$($(2)_prog_srcs))
+$(2)_prog_deps      := $$(patsubst %.o, %.d, $$($(2)_prog_objs))
+$(2)_prog_exes      := $$(patsubst %.cc, %, $$($(2)_prog_srcs))
+$(2)_prog_libs      := $(1) $$($(2)_reverse_deps)
+$(2)_prog_libnames  := $$(patsubst %, lib%.a, $$($(2)_prog_libs))
+$(2)_prog_libarg    := -L. $$(patsubst %, -l%, $$($(2)_prog_libs))
+
+$$($(2)_prog_objs) : %.o : %.cc
+	$(COMPILE) -c $$<
+
+$$($(2)_prog_exes) : % : %.o $$($(2)_prog_libnames)
+	$(LINK) -o $$@ $$< $$($(2)_prog_libarg) $(LIBS)
+
+$(2)_deps += $$($(2)_prog_deps)
+$(2)_junk += $$($(2)_prog_objs) $$($(2)_prog_deps) $$($(2)_prog_exes)
+
+# Build programs which will be installed
+
+$(2)_install_prog_objs := $$(patsubst %.cc, %.o, $$($(2)_install_prog_srcs))
+$(2)_install_prog_deps := $$(patsubst %.o, %.d, $$($(2)_install_prog_objs))
+$(2)_install_prog_exes := $$(patsubst %.cc, %, $$($(2)_install_prog_srcs))
+
+$$($(2)_install_prog_objs) : %.o : %.cc
+	$(COMPILE) -c $$<
+
+$$($(2)_install_prog_exes) : % : %.o $$($(2)_prog_libnames)
+	$(LINK) -o $$@ $$< $$($(2)_prog_libarg) $(LIBS)
+
+$(2)_deps += $$($(2)_install_prog_deps)
+$(2)_junk += \
+  $$($(2)_install_prog_objs) $$($(2)_install_prog_deps) \
+  $$($(2)_install_prog_exes)
+
+# Subproject specific targets
+
+all-$(1) : lib$(1).a $$($(2)_install_prog_exes)
+
+check-$(1) : $$($(2)_test_outs)
+	echo; grep -h -e'Unit Tests' -e'FAILED' -e'Segementation' $$^; echo
+
+clean-$(1) :
+	rm -rf $$($(2)_junk)
+
+.PHONY : all-$(1) check-$(1) clean-$(1)
+
+# Update running variables
+
+libs += lib$(1).a
+objs += $$($(2)_objs)
+srcs += $$(addprefix $(src_dir)/$(1)/, $$($(2)_srcs)) 
+hdrs += $$(addprefix $(src_dir)/$(1)/, $$($(2)_hdrs))
+junk += $$($(2)_junk)
+deps += $$($(2)_deps)
+
+test_outs += $$($(2)_test_outs)
+
+install_hdrs += $$(addprefix $(src_dir)/$(1)/, $$($(2)_hdrs))
+install_libs += lib$(1).a
+install_exes += $$($(2)_install_prog_exes)
+
+endef
+
+# Iterate over the subprojects and call the template for each one
+
+$(foreach sproj,$(sprojs_enabled), \
+  $(eval $(call subproject_template,$(sproj),$(subst -,_,$(sproj)))))
+
+#-------------------------------------------------------------------------
+# Autodependency files
+#-------------------------------------------------------------------------
+
+-include $(deps)
+
+deps : $(deps)
+.PHONY : deps
+
+#-------------------------------------------------------------------------
+# Check
+#-------------------------------------------------------------------------
+
+check : $(test_outs)
+	echo; grep -h -e'Unit Tests' -e'FAILED' -e'Segementation' $^; echo
+
+.PHONY : check
+
+#-------------------------------------------------------------------------
+# Installation
+#-------------------------------------------------------------------------
+
+install-hdrs : $(install_hdrs)
+	$(MKINSTALLDIRS) $(install_hdrs_dir)
+	for file in $(install_hdrs); \
+  do \
+    $(INSTALL_HDR) $$file $(install_hdrs_dir); \
+  done
+
+install-libs : $(install_libs)
+	$(MKINSTALLDIRS) $(install_libs_dir)
+	for file in $(install_libs); \
+  do \
+    $(INSTALL_LIB) $$file $(install_libs_dir); \
+  done
+
+install-exes : $(install_exes)
+	$(MKINSTALLDIRS) $(install_exes_dir)
+	for file in $(install_exes); \
+  do \
+    $(INSTALL_EXE) $$file $(install_exes_dir); \
+  done
+
+install : install-hdrs install-libs install-exes
+ifeq ($(enable_stow),yes)
+	$(MKINSTALLDIRS) $(stow_pkg_dir)
+	cd $(stow_pkg_dir) && \
+    $(STOW) --delete $(project_name)-* && \
+    $(STOW) $(project_name)-$(project_ver)
+endif
+
+.PHONY : install install-hdrs install-libs install-exes
+
+#-------------------------------------------------------------------------
+# Regenerate configure information
+#-------------------------------------------------------------------------
+
+configure_prereq = \
+  $(src_dir)/configure.ac \
+  $(src_dir)/aclocal.m4 \
+  $(join $(addprefix $(src_dir)/, $(sprojs_enabled)), \
+         $(patsubst  %, /%.ac, $(sprojs_enabled)))
+
+$(src_dir)/configure : $(configure_prereq)
+	cd $(src_dir) && autoconf && autoheader
+
+config.status : $(src_dir)/configure
+	./config.status --recheck
+
+sprojs_mk_in = \
+  $(join $(addprefix $(src_dir)/, $(sprojs_enabled)), \
+         $(patsubst  %, /%.mk.in, $(sprojs_enabled)))
+
+Makefile : $(src_dir)/Makefile.in $(sprojs_mk_in) config.status
+	./config.status
+
+dist_junk += config.status config.h Makefile config.log
+
+#-------------------------------------------------------------------------
+# Distribution
+#-------------------------------------------------------------------------
+# The distribution tarball is named project-ver.tar.gz and it includes
+# both enabled and disabled subprojects. 
+
+dist_files = \
+  $(sprojs) \
+  README \
+  style-guide.txt \
+  mcppbs-uguide.txt \
+  scripts \
+  configure.ac \
+  aclocal.m4 \
+  configure \
+  config.h.in \
+  Makefile.in \
+
+dist_dir := $(project_name)-$(project_ver)
+dist_tgz := $(project_name)-$(project_ver).tar.gz
+
+# Notice that when we make the distribution we rewrite the configure.ac
+# script with the current version and we rerun autoconf in the new
+# source directory so that the distribution will have the proper version
+# information. We also rewrite the "Version : " line in the README.
+
+dist :
+	rm -rf $(dist_dir)
+	mkdir $(dist_dir)
+	tar -C $(src_dir) -cf - $(dist_files) | tar -C $(dist_dir) -xpf -
+	sed -i.bak 's/^\(# Version :\).*/\1 $(project_ver)/' $(dist_dir)/README
+	sed -i.bak 's/\( proj_version,\).*/\1 [$(project_ver)])/' $(dist_dir)/configure.ac
+	cd $(dist_dir) && \
+    autoconf && autoheader && \
+    rm -rf autom4te.cache configure.ac.bak README.bak
+	tar -czvf $(dist_tgz) $(dist_dir)
+	rm -rf $(dist_dir)
+
+# You can use the distcheck target to try untarring the distribution and
+# then running configure, make, make check, and make distclean. A
+# "directory is not empty" error means distclean is not removing
+# everything.
+
+distcheck : dist
+	rm -rf $(dist_dir)
+	tar -xzvf $(dist_tgz)
+	mkdir -p $(dist_dir)/build
+	cd $(dist_dir)/build; ../configure; make; make check; make distclean
+	rm -rf $(dist_dir)
+
+junk += $(project_name)-*.tar.gz
+
+.PHONY : dist distcheck
+
+#-------------------------------------------------------------------------
+# Default
+#-------------------------------------------------------------------------
+
+all : $(install_hdrs) $(install_libs) $(install_exes)
+.PHONY : all
+
+#-------------------------------------------------------------------------
+# Makefile debugging
+#-------------------------------------------------------------------------
+# This handy rule will display the contents of any make variable by
+# using the target debug-<varname>. So for example, make debug-junk will
+# display the contents of the junk variable.
+
+debug-% :
+	@echo $* = $($*)
+
+#-------------------------------------------------------------------------
+# Clean up junk
+#-------------------------------------------------------------------------
+
+clean :
+	rm -rf *~ \#* $(junk)
+
+distclean :
+	rm -rf *~ \#* $(junk) $(dist_junk)
+
+.PHONY : clean distclean
diff --git a/README b/README
new file mode 100644
index 0000000..676eff7
--- /dev/null
+++ b/README
@@ -0,0 +1,61 @@
+==========================================================================
+RISC-V ISA Simulator
+==========================================================================
+# Author  : Andrew Waterman
+# Date    : June 19, 2011
+# Version : (under version control)
+
+The RISC-V ISA Simulator implements a functional model of one or more
+RISC-V processors.
+
+--------------------------------------------------------------------------
+Build Steps
+--------------------------------------------------------------------------
+
+ % mkdir build
+ % cd build
+ % ../configure
+ % make
+ % [sudo] make install
+
+--------------------------------------------------------------------------
+Usage
+--------------------------------------------------------------------------
+
+The riscv-isa-run program is not usually invoked directly; rather, fesvr, the
+Front-End Server, invokes riscv-isa-run.  fesvr and riscv-pk must be installed
+to simulate a RISC-V user program using riscv-isa-run.
+
+--------------------------------------------------------------------------
+Compiling and Running a Simple C Program
+--------------------------------------------------------------------------
+
+Install riscv-isa-run (see Build Steps), then install the following additional
+packages: riscv-fesvr, riscv-gcc, riscv-pk.
+
+Write a short C program and name it hello.c.  Then, compile it into a RISC-V
+ELF binary named hello:
+
+ % riscv-gcc -o hello hello.c
+
+Now you can simulate the program:
+
+ % riscv-fesvr hello
+
+--------------------------------------------------------------------------
+Simulating a New Instruction
+--------------------------------------------------------------------------
+
+Adding an instruction to the simulator requires two steps:
+
+  1. Describe the instruction's functional behavior in the file
+     riscv/insns/<new_instruction_name>.h.  Examine other instructions
+     in that directory as a starting point.
+
+  2. Add the instruction to the riscv-opcodes package:
+
+      % cd ../riscv-opcodes
+      % vi opcodes       // add a line for the new instruction
+      % make install
+
+  3. Rebuild the simulator.
diff --git a/aclocal.m4 b/aclocal.m4
new file mode 100644
index 0000000..15353f2
--- /dev/null
+++ b/aclocal.m4
@@ -0,0 +1,345 @@
+#=========================================================================
+# Local Autoconf Macros
+#=========================================================================
+# This file contains the macros for the Modular C++ Build System and
+# additional autoconf macros which developers can use in their
+# configure.ac scripts. Please read the documentation in
+# 'mcppbs-doc.txt' for more details on how the Modular C++ Build System
+# works. The documenation for each macro should include information
+# about the author, date, and copyright.
+
+#-------------------------------------------------------------------------
+# MCPPBS_PROG_INSTALL
+#-------------------------------------------------------------------------
+# This macro will add an --enable-stow command line option to the
+# configure script. When enabled, this macro will first check to see if
+# the stow program is available and if so it will set the $stow shell
+# variable to the binary name and the $enable_stow shell variable to
+# "yes". These variables can be used in a makefile to conditionally use
+# stow for installation. 
+#
+# This macro uses two environment variables to help setup default stow
+# locations. The $STOW_PREFIX is used for stowing native built packages.
+# The packages are staged in $STOW_PREFIX/pkgs and then symlinks are
+# created from within $STOW_PREFIX into the pkgs subdirectory. If you
+# only do native builds then this is all you need to set. If you don't
+# set $STOW_PREFIX then the default is just the normal default prefix
+# which is almost always /usr/local.
+#
+# For non-native builds we probably want to install the packages in a
+# different location which includes the host architecture name as part
+# of the prefix. For these kind of builds, we can specify the $STOW_ROOT
+# environment variable and the effective prefix will be
+# $STOW_ROOT/${host_alias} where ${host_alias} is specified on the
+# configure command line with "--host".
+#
+# Here is an example setup:
+#
+#  STOW_ROOT="$HOME/install"
+#  STOW_ARCH="i386-macosx10.4"
+#  STOW_PREFIX="${STOW_ROOT}/${STOW_ARCH}"
+#
+
+AC_DEFUN([MCPPBS_PROG_INSTALL],
+[
+
+  # Configure command line option
+
+  AC_ARG_ENABLE(stow,
+    AS_HELP_STRING(--enable-stow,[Enable stow-based install]),
+      [enable_stow="yes"],[enable_stow="no"])
+
+  AC_SUBST([enable_stow])
+   
+  # Environment variables
+
+  AC_ARG_VAR([STOW_ROOT],   [Root for non-native stow-based installs])
+  AC_ARG_VAR([STOW_PREFIX], [Prefix for stow-based installs])
+
+  # Check for install script
+
+  AC_PROG_INSTALL
+
+  # Deterimine if native build and set prefix appropriately
+  
+  AS_IF([ test ${enable_stow} = "yes" ],
+  [
+    AC_CHECK_PROGS([stow],[stow],[no])  
+    AS_IF([ test ${stow} = "no" ],
+    [
+      AC_MSG_ERROR([Cannot use --enable-stow since stow is not available])
+    ])
+
+    # Check if native or non-native build
+
+    AS_IF([ test "${build}" = "${host}" ],
+    [
+
+      # build == host so this is a native build. Make sure --prefix not
+      # set and $STOW_PREFIX is set, then set prefix=$STOW_PREFIX.
+
+      AS_IF([ test "${prefix}" = "NONE" && test -n "${STOW_PREFIX}" ],
+      [
+        prefix="${STOW_PREFIX}"
+        AC_MSG_NOTICE([Using \$STOW_PREFIX from environment])
+        AC_MSG_NOTICE([prefix=${prefix}])
+      ])
+
+    ],[
+
+      # build != host so this is a non-native build. Make sure --prefix
+      # not set and $STOW_ROOT is set, then set
+      # prefix=$STOW_ROOT/${host_alias}.
+
+      AS_IF([ test "${prefix}" = "NONE" && test -n "${STOW_ROOT}" ],
+      [
+        prefix="${STOW_ROOT}/${host_alias}"
+        AC_MSG_NOTICE([Using \$STOW_ROOT from environment])
+        AC_MSG_NOTICE([prefix=${prefix}])
+      ])
+
+    ])
+      
+  ])
+
+])
+
+#-------------------------------------------------------------------------
+# MCPPBS_PROG_RUN
+# -------------------------------------------------------------------------
+# If we are doing a non-native build then we look for an isa simulator
+# to use for running tests. We set the RUN substitution variable to be
+# empty for native builds or to the name of the isa simulator for
+# non-native builds. Thus a makefile can run compiled programs
+# regardless if we are doing a native or non-native build like this:
+# 
+#  $(RUN) $(RUNFLAGS) ./test-program
+#
+
+AC_DEFUN([MCPPBS_PROG_RUN],
+[
+  AS_IF([ test "${build}" != "${host}" ],
+  [
+    AC_CHECK_TOOLS([RUN],[isa-run run],[no])
+    AS_IF([ test ${RUN} = "no" ],
+    [
+      AC_MSG_ERROR([Cannot find simulator for target ${target_alias}])
+    ])
+  ],[
+    RUN=""
+  ])
+  AC_SUBST([RUN])
+  AC_SUBST([RUNFLAGS])
+])
+
+#-------------------------------------------------------------------------
+# MCPPBS_SUBPROJECTS([ sproj1, sproj2, ... ])
+#-------------------------------------------------------------------------
+# The developer should call this macro with a list of the subprojects
+# which make up this project. One should order the list such that any
+# given subproject only depends on subprojects listed before it. The
+# subproject names can also include an * suffix which indicates that
+# this is an optional subproject. Optional subprojects are only included
+# as part of the project build if enabled on the configure command line
+# with a --enable-<subproject> flag. The user can also specify that all
+# optional subprojects should be included in the build with the
+# --enable-optional-subprojects flag.
+#
+# Subproject names can also include a ** suffix which indicates that it
+# is an optional subproject, but there is a group with the same name.
+# Thus the --enable-<sproj> command line option will enable not just the
+# subproject sproj but all of the subprojects which are in the group.
+# There is no error checking to make sure that if you use the ** suffix
+# you actually define a group so be careful.
+#
+# Both required and optional subprojects should have a 'subproject.ac'
+# file. The script's filename should be the abbreivated subproject name
+# (assuming the subproject name is sproj then we would use 'sproj.ac')
+# The MCPPBS_SUBPROJECTS macro includes the 'subproject.ac' files for
+# enabled subprojects. Whitespace and newlines are allowed within the
+# list.
+#
+# Author : Christopher Batten
+# Date   : September 10, 2008
+
+AC_DEFUN([MCPPBS_SUBPROJECTS],
+[
+
+  # Add command line argument to enable all optional subprojects 
+
+  AC_ARG_ENABLE(optional-subprojects,
+    AS_HELP_STRING([--enable-optional-subprojects],
+      [Enable all optional subprojects]))
+
+  # Loop through the subprojects given in the macro argument
+
+  m4_foreach([MCPPBS_SPROJ],[$1],
+  [
+  
+    # Determine if this is a required or an optional subproject
+
+    m4_define([MCPPBS_IS_REQ],
+      m4_bmatch(MCPPBS_SPROJ,[\*+],[false],[true]))
+
+    # Determine if there is a group with the same name
+
+    m4_define([MCPPBS_IS_GROUP],
+      m4_bmatch(MCPPBS_SPROJ,[\*\*],[true],[false]))
+
+    # Create variations of the subproject name suitable for use as a CPP
+    # enabled define, a shell enabled variable, and a shell function
+
+    m4_define([MCPPBS_SPROJ_NORM],
+      m4_normalize(m4_bpatsubsts(MCPPBS_SPROJ,[*],[])))
+
+    m4_define([MCPPBS_SPROJ_DEFINE],
+      m4_toupper(m4_bpatsubst(MCPPBS_SPROJ_NORM[]_ENABLED,[-],[_])))
+
+    m4_define([MCPPBS_SPROJ_FUNC],
+      m4_bpatsubst(_mpbp_[]MCPPBS_SPROJ_NORM[]_configure,[-],[_]))
+
+    m4_define([MCPPBS_SPROJ_UNDERSCORES],
+      m4_bpatsubsts(MCPPBS_SPROJ,[-],[_]))
+
+    m4_define([MCPPBS_SPROJ_SHVAR],
+      m4_bpatsubst(enable_[]MCPPBS_SPROJ_NORM[]_sproj,[-],[_]))
+    
+    # Add subproject to our running list
+
+    subprojects="$subprojects MCPPBS_SPROJ_NORM"
+
+    # Process the subproject appropriately. If enabled add it to the
+    # $enabled_subprojects running shell variable, set a
+    # SUBPROJECT_ENABLED C define, and include the appropriate
+    # 'subproject.ac'.
+
+    m4_if(MCPPBS_IS_REQ,[true],
+    [
+      AC_MSG_NOTICE([configuring default subproject : MCPPBS_SPROJ_NORM])
+      AC_CONFIG_FILES(MCPPBS_SPROJ_NORM[].mk:MCPPBS_SPROJ_NORM[]/MCPPBS_SPROJ_NORM[].mk.in)
+      MCPPBS_SPROJ_SHVAR="yes"
+      subprojects_enabled="$subprojects_enabled MCPPBS_SPROJ_NORM"
+      AC_DEFINE(MCPPBS_SPROJ_DEFINE,,
+        [Define if subproject MCPPBS_SPROJ_NORM is enabled])
+      m4_include(MCPPBS_SPROJ_NORM[]/MCPPBS_SPROJ_NORM[].ac) 
+    ],[
+
+      # For optional subprojects we capture the 'subproject.ac' as a
+      # shell function so that in the MCPPBS_GROUP macro we can just
+      # call this shell function instead of reading in 'subproject.ac'
+      # again.
+
+      MCPPBS_SPROJ_FUNC ()
+      { 
+        AC_MSG_NOTICE([configuring optional subproject : MCPPBS_SPROJ_NORM])
+        AC_CONFIG_FILES(MCPPBS_SPROJ_NORM[].mk:MCPPBS_SPROJ_NORM[]/MCPPBS_SPROJ_NORM[].mk.in)
+        MCPPBS_SPROJ_SHVAR="yes"
+        subprojects_enabled="$subprojects_enabled MCPPBS_SPROJ_NORM"
+        AC_DEFINE(MCPPBS_SPROJ_DEFINE,,
+          [Define if subproject MCPPBS_SPROJ_NORM is enabled])
+        m4_include(MCPPBS_SPROJ_NORM[]/MCPPBS_SPROJ_NORM[].ac) 
+      };
+
+      # Optional subprojects add --enable-subproject command line
+      # options, _if_ the subproject name is not also a group name.
+
+      m4_if(MCPPBS_IS_GROUP,[false],
+      [
+        AC_ARG_ENABLE(MCPPBS_SPROJ_NORM,
+          AS_HELP_STRING(--enable-MCPPBS_SPROJ_NORM,
+            [Subproject MCPPBS_SPROJ_NORM]),
+          [MCPPBS_SPROJ_SHVAR="yes"],[MCPPBS_SPROJ_SHVAR="no"])
+
+        AS_IF([test "$MCPPBS_SPROJ_SHVAR" = "yes"],
+        [
+          eval "MCPPBS_SPROJ_FUNC"
+        ],[ 
+          AC_MSG_NOTICE([processing optional subproject : MCPPBS_SPROJ_NORM])
+        ])
+
+     ],[
+
+       # If the subproject name is also a group name then we need to
+       # make sure that we set the shell variable for that subproject to
+       # no so that the group code knows we haven't run it yet.
+
+       AC_MSG_NOTICE([processing optional subproject : MCPPBS_SPROJ_NORM])
+       MCPPBS_SPROJ_SHVAR="no"
+
+     ])
+
+     # Always execute the subproject configure code if we are enabling
+     # all subprojects.
+
+     AS_IF([    test "$enable_optional_subprojects" = "yes" \
+             && test "$MCPPBS_SPROJ_SHVAR" = "no"  ],
+     [
+       eval "MCPPBS_SPROJ_FUNC"
+     ])
+
+    ])
+
+  ])
+
+  # Output make variables  
+
+  AC_SUBST([subprojects])
+  AC_SUBST([subprojects_enabled])
+
+])
+
+#-------------------------------------------------------------------------
+# MCPPBS_GROUP( [group-name], [ sproj1, sproj2, ... ] )
+#-------------------------------------------------------------------------
+# This macro creates a subproject group with the given group-name. When
+# a user specifies --enable-<group-name> the listed subprojects will be
+# enabled. Groups can have the same name as a subproject and in that
+# case whenever a user specifies --enable-<subproject> the subprojects
+# listed in the corresponding group will also be enabled. Groups are
+# useful for specifying related subprojects which are usually enabled
+# together, as well as for specifying that a specific optional
+# subproject has dependencies on other optional subprojects.
+#
+# Author : Christopher Batten
+# Date   : September 10, 2008
+
+AC_DEFUN([MCPPBS_GROUP],
+[
+
+  m4_define([MCPPBS_GROUP_NORM],
+    m4_normalize([$1]))
+
+  m4_define([MCPPBS_GROUP_SHVAR],
+    m4_bpatsubst(enable_[]MCPPBS_GROUP_NORM[]_group,[-],[_]))
+                
+  AC_ARG_ENABLE(MCPPBS_GROUP_NORM,
+    AS_HELP_STRING(--enable-MCPPBS_GROUP_NORM,
+      [Group MCPPBS_GROUP_NORM: $2]),
+    [MCPPBS_GROUP_SHVAR="yes"],[MCPPBS_GROUP_SHVAR="no"])
+
+  AS_IF([test "$MCPPBS_GROUP_SHVAR" = "yes" ],
+  [ 
+    AC_MSG_NOTICE([configuring optional group : MCPPBS_GROUP_NORM])
+  ])
+
+  m4_foreach([MCPPBS_SPROJ],[$2],
+  [    
+
+    m4_define([MCPPBS_SPROJ_NORM],
+      m4_normalize(MCPPBS_SPROJ))
+
+    m4_define([MCPPBS_SPROJ_SHVAR],
+      m4_bpatsubst(enable_[]MCPPBS_SPROJ_NORM[]_sproj,[-],[_]))
+
+    m4_define([MCPPBS_SPROJ_FUNC],
+      m4_bpatsubst(_mpbp_[]MCPPBS_SPROJ_NORM[]_configure,[-],[_]))
+
+    AS_IF([    test "$MCPPBS_GROUP_SHVAR" = "yes" \
+            && test "$MCPPBS_SPROJ_SHVAR" = "no" ],
+    [
+      eval "MCPPBS_SPROJ_FUNC"
+    ])
+
+  ])
+
+])
diff --git a/config.h.in b/config.h.in
new file mode 100644
index 0000000..e592810
--- /dev/null
+++ b/config.h.in
@@ -0,0 +1,46 @@
+/* config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define if subproject MCPPBS_SPROJ_NORM is enabled */
+#undef RISCV_ENABLED
+
+/* Define if 64-bit mode is supported */
+#undef RISCV_ENABLE_64BIT
+
+/* Define if floating-point instructions are supported */
+#undef RISCV_ENABLE_FPU
+
+/* Define if instruction compression is supported */
+#undef RISCV_ENABLE_RVC
+
+/* Define if vector processor is supported */
+#undef RISCV_ENABLE_VEC
+
+/* Define if libopcodes exists */
+#undef RISCV_HAVE_LIBOPCODES
+
+/* Define if subproject MCPPBS_SPROJ_NORM is enabled */
+#undef SOFTFLOAT_ENABLED
+
+/* Define if subproject MCPPBS_SPROJ_NORM is enabled */
+#undef SOFTFLOAT_RISCV_ENABLED
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
diff --git a/configure b/configure
new file mode 100755
index 0000000..ea16b08
--- /dev/null
+++ b/configure
@@ -0,0 +1,5561 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.64 for RISC-V ISA Simulator ?.
+#
+# Report bugs to <Andrew Waterman>.
+#
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software
+# Foundation, Inc.
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+if test "x$CONFIG_SHELL" = x; then
+  as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"\$@\"}'='\"\$@\"'
+  setopt NO_GLOB_SUBST
+else
+  case \`(set -o) 2>/dev/null\` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+"
+  as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
+
+else
+  exitcode=1; echo positional parameters were not saved.
+fi
+test x\$exitcode = x0 || exit 1"
+  as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+  as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+  eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
+  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
+test \$(( 1 + 1 )) = 2 || exit 1"
+  if (eval "$as_required") 2>/dev/null; then :
+  as_have_required=yes
+else
+  as_have_required=no
+fi
+  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :
+
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  as_found=:
+  case $as_dir in #(
+	 /*)
+	   for as_base in sh bash ksh sh5; do
+	     # Try only shells that exist, to save several forks.
+	     as_shell=$as_dir/$as_base
+	     if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+		    { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  CONFIG_SHELL=$as_shell as_have_required=yes
+		   if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  break 2
+fi
+fi
+	   done;;
+       esac
+  as_found=false
+done
+$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+	      { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :
+  CONFIG_SHELL=$SHELL as_have_required=yes
+fi; }
+IFS=$as_save_IFS
+
+
+      if test "x$CONFIG_SHELL" != x; then :
+  # We cannot yet assume a decent shell, so we have to provide a
+	# neutralization value for shells without unset; and this also
+	# works around shells that cannot unset nonexistent variables.
+	BASH_ENV=/dev/null
+	ENV=/dev/null
+	(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+	export CONFIG_SHELL
+	exec "$CONFIG_SHELL" "$as_myself" ${1+"$@"}
+fi
+
+    if test x$as_have_required = xno; then :
+  $as_echo "$0: This script requires a shell more modern than all"
+  $as_echo "$0: the shells that I found on your system."
+  if test x${ZSH_VERSION+set} = xset ; then
+    $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+    $as_echo "$0: be upgraded to zsh 4.3.4 or later."
+  else
+    $as_echo "$0: Please tell bug-autoconf@gnu.org and Andrew Waterman
+$0: about your system, including any error possibly output
+$0: before this message. Then install a modern shell, or
+$0: manually run the script under such a shell if you do
+$0: have one."
+  fi
+  exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+# as_fn_error ERROR [LINENO LOG_FD]
+# ---------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with status $?, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$?; test $as_status -eq 0 && as_status=1
+  if test "$3"; then
+    as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3
+  fi
+  $as_echo "$as_me: error: $1" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+  as_lineno_1=$LINENO as_lineno_1a=$LINENO
+  as_lineno_2=$LINENO as_lineno_2a=$LINENO
+  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
+  sed -n '
+    p
+    /[$]LINENO/=
+  ' <$as_myself |
+    sed '
+      s/[$]LINENO.*/&-/
+      t lineno
+      b
+      :lineno
+      N
+      :loop
+      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+      t loop
+      s/-\n.*//
+    ' >$as_me.lineno &&
+  chmod +x "$as_me.lineno" ||
+    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensitive to this).
+  . "./$as_me.lineno"
+  # Exit status is that of the last command.
+  exit
+}
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -p'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -p'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -p'
+  fi
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+	test -d "$1/.";
+      else
+	case $1 in #(
+	-*)set "./$1";;
+	esac;
+	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+	???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 7<&0 </dev/null 6>&1
+
+# Name of the host.
+# hostname on some systems (SVR3.2, Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_clean_files=
+ac_config_libobj_dir=.
+LIBOBJS=
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+
+# Identity of this package.
+PACKAGE_NAME='RISC-V ISA Simulator'
+PACKAGE_TARNAME='riscv-isa-run'
+PACKAGE_VERSION='?'
+PACKAGE_STRING='RISC-V ISA Simulator ?'
+PACKAGE_BUGREPORT='Andrew Waterman'
+PACKAGE_URL=''
+
+ac_unique_file="riscv/common.h"
+ac_subst_vars='LTLIBOBJS
+LIBOBJS
+subprojects_enabled
+subprojects
+EGREP
+GREP
+CPP
+RUNFLAGS
+ac_ct_RUN
+RUN
+stow
+INSTALL_DATA
+INSTALL_SCRIPT
+INSTALL_PROGRAM
+STOW_PREFIX
+STOW_ROOT
+enable_stow
+RANLIB
+AR
+ac_ct_CXX
+CXXFLAGS
+CXX
+OBJEXT
+EXEEXT
+ac_ct_CC
+CPPFLAGS
+LDFLAGS
+CFLAGS
+CC
+host_os
+host_vendor
+host_cpu
+host
+build_os
+build_vendor
+build_cpu
+build
+target_alias
+host_alias
+build_alias
+LIBS
+ECHO_T
+ECHO_N
+ECHO_C
+DEFS
+mandir
+localedir
+libdir
+psdir
+pdfdir
+dvidir
+htmldir
+infodir
+docdir
+oldincludedir
+includedir
+localstatedir
+sharedstatedir
+sysconfdir
+datadir
+datarootdir
+libexecdir
+sbindir
+bindir
+program_transform_name
+prefix
+exec_prefix
+PACKAGE_URL
+PACKAGE_BUGREPORT
+PACKAGE_STRING
+PACKAGE_VERSION
+PACKAGE_TARNAME
+PACKAGE_NAME
+PATH_SEPARATOR
+SHELL'
+ac_subst_files=''
+ac_user_opts='
+enable_option_checking
+enable_stow
+enable_optional_subprojects
+enable_fpu
+enable_64bit
+enable_rvc
+enable_vec
+'
+      ac_precious_vars='build_alias
+host_alias
+target_alias
+CC
+CFLAGS
+LDFLAGS
+LIBS
+CPPFLAGS
+CXX
+CXXFLAGS
+CCC
+STOW_ROOT
+STOW_PREFIX
+CPP'
+
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+ac_unrecognized_opts=
+ac_unrecognized_sep=
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+# (The list follows the same order as the GNU Coding Standards.)
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datarootdir='${prefix}/share'
+datadir='${datarootdir}'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
+infodir='${datarootdir}/info'
+htmldir='${docdir}'
+dvidir='${docdir}'
+pdfdir='${docdir}'
+psdir='${docdir}'
+libdir='${exec_prefix}/lib'
+localedir='${datarootdir}/locale'
+mandir='${datarootdir}/man'
+
+ac_prev=
+ac_dashdash=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval $ac_prev=\$ac_option
+    ac_prev=
+    continue
+  fi
+
+  case $ac_option in
+  *=*)	ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+  *)	ac_optarg=yes ;;
+  esac
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_dashdash$ac_option in
+  --)
+    ac_dashdash=yes ;;
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=*)
+    datadir=$ac_optarg ;;
+
+  -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
+  | --dataroo | --dataro | --datar)
+    ac_prev=datarootdir ;;
+  -datarootdir=* | --datarootdir=* | --datarootdi=* | --datarootd=* \
+  | --dataroot=* | --dataroo=* | --dataro=* | --datar=*)
+    datarootdir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--disable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=no ;;
+
+  -docdir | --docdir | --docdi | --doc | --do)
+    ac_prev=docdir ;;
+  -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
+    docdir=$ac_optarg ;;
+
+  -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
+    ac_prev=dvidir ;;
+  -dvidir=* | --dvidir=* | --dvidi=* | --dvid=* | --dvi=* | --dv=*)
+    dvidir=$ac_optarg ;;
+
+  -enable-* | --enable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--enable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=\$ac_optarg ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
+    ac_prev=htmldir ;;
+  -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
+  | --ht=*)
+    htmldir=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localedir | --localedir | --localedi | --localed | --locale)
+    ac_prev=localedir ;;
+  -localedir=* | --localedir=* | --localedi=* | --localed=* | --locale=*)
+    localedir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst | --locals)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* | --locals=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -pdfdir | --pdfdir | --pdfdi | --pdfd | --pdf | --pd)
+    ac_prev=pdfdir ;;
+  -pdfdir=* | --pdfdir=* | --pdfdi=* | --pdfd=* | --pdf=* | --pd=*)
+    pdfdir=$ac_optarg ;;
+
+  -psdir | --psdir | --psdi | --psd | --ps)
+    ac_prev=psdir ;;
+  -psdir=* | --psdir=* | --psdi=* | --psd=* | --ps=*)
+    psdir=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--with-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=\$ac_optarg ;;
+
+  -without-* | --without-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--without-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=no ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) as_fn_error "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information."
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    case $ac_envvar in #(
+      '' | [0-9]* | *[!_$as_cr_alnum]* )
+      as_fn_error "invalid variable name: \`$ac_envvar'" ;;
+    esac
+    eval $ac_envvar=\$ac_optarg
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  as_fn_error "missing argument to $ac_option"
+fi
+
+if test -n "$ac_unrecognized_opts"; then
+  case $enable_option_checking in
+    no) ;;
+    fatal) as_fn_error "unrecognized options: $ac_unrecognized_opts" ;;
+    *)     $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+  esac
+fi
+
+# Check all directory arguments for consistency.
+for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
+		datadir sysconfdir sharedstatedir localstatedir includedir \
+		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
+		libdir localedir mandir
+do
+  eval ac_val=\$$ac_var
+  # Remove trailing slashes.
+  case $ac_val in
+    */ )
+      ac_val=`expr "X$ac_val" : 'X\(.*[^/]\)' \| "X$ac_val" : 'X\(.*\)'`
+      eval $ac_var=\$ac_val;;
+  esac
+  # Be sure to have absolute directory names.
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* )  continue;;
+    NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
+  esac
+  as_fn_error "expected an absolute directory name for --$ac_var: $ac_val"
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+    $as_echo "$as_me: WARNING: If you wanted to set the --build type, don't use --host.
+    If a cross compiler is detected then cross compile mode will be used." >&2
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+ac_pwd=`pwd` && test -n "$ac_pwd" &&
+ac_ls_di=`ls -di .` &&
+ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
+  as_fn_error "working directory cannot be determined"
+test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
+  as_fn_error "pwd does not report name of working directory"
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then the parent directory.
+  ac_confdir=`$as_dirname -- "$as_myself" ||
+$as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_myself" : 'X\(//\)[^/]' \| \
+	 X"$as_myself" : 'X\(//\)$' \| \
+	 X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_myself" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r "$srcdir/$ac_unique_file"; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r "$srcdir/$ac_unique_file"; then
+  test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
+  as_fn_error "cannot find sources ($ac_unique_file) in $srcdir"
+fi
+ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
+ac_abs_confdir=`(
+	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error "$ac_msg"
+	pwd)`
+# When building in place, set srcdir=.
+if test "$ac_abs_confdir" = "$ac_pwd"; then
+  srcdir=.
+fi
+# Remove unnecessary trailing slashes from srcdir.
+# Double slashes in file names in object file debugging info
+# mess up M-x gdb in Emacs.
+case $srcdir in
+*/) srcdir=`expr "X$srcdir" : 'X\(.*[^/]\)' \| "X$srcdir" : 'X\(.*\)'`;;
+esac
+for ac_var in $ac_precious_vars; do
+  eval ac_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_env_${ac_var}_value=\$${ac_var}
+  eval ac_cv_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_cv_env_${ac_var}_value=\$${ac_var}
+done
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures RISC-V ISA Simulator ? to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR            user executables [EPREFIX/bin]
+  --sbindir=DIR           system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR        program executables [EPREFIX/libexec]
+  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --libdir=DIR            object code libraries [EPREFIX/lib]
+  --includedir=DIR        C header files [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
+  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
+  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
+  --infodir=DIR           info documentation [DATAROOTDIR/info]
+  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
+  --mandir=DIR            man documentation [DATAROOTDIR/man]
+  --docdir=DIR            documentation root [DATAROOTDIR/doc/riscv-isa-run]
+  --htmldir=DIR           html documentation [DOCDIR]
+  --dvidir=DIR            dvi documentation [DOCDIR]
+  --pdfdir=DIR            pdf documentation [DOCDIR]
+  --psdir=DIR             ps documentation [DOCDIR]
+_ACEOF
+
+  cat <<\_ACEOF
+
+System types:
+  --build=BUILD     configure for building on BUILD [guessed]
+  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+  case $ac_init_help in
+     short | recursive ) echo "Configuration of RISC-V ISA Simulator ?:";;
+   esac
+  cat <<\_ACEOF
+
+Optional Features:
+  --disable-option-checking  ignore unrecognized --enable/--with options
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --enable-stow           Enable stow-based install
+  --enable-optional-subprojects
+                          Enable all optional subprojects
+  --disable-fpu           Disable floating-point
+  --disable-64bit         Disable 64-bit mode
+  --enable-rvc            Enable instruction compression
+  --disable-vec           Disable vector processor
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+              nonstandard directory <lib dir>
+  LIBS        libraries to pass to the linker, e.g. -l<library>
+  CPPFLAGS    C/C++/Objective C preprocessor flags, e.g. -I<include dir> if
+              you have headers in a nonstandard directory <include dir>
+  CXX         C++ compiler command
+  CXXFLAGS    C++ compiler flags
+  STOW_ROOT   Root for non-native stow-based installs
+  STOW_PREFIX Prefix for stow-based installs
+  CPP         C preprocessor
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to <Andrew Waterman>.
+_ACEOF
+ac_status=$?
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d "$ac_dir" ||
+      { cd "$srcdir" && ac_pwd=`pwd` && srcdir=. && test -d "$ac_dir"; } ||
+      continue
+    ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+    cd "$ac_dir" || { ac_status=$?; continue; }
+    # Check for guested configure.
+    if test -f "$ac_srcdir/configure.gnu"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure.gnu" --help=recursive
+    elif test -f "$ac_srcdir/configure"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure" --help=recursive
+    else
+      $as_echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi || ac_status=$?
+    cd "$ac_pwd" || { ac_status=$?; break; }
+  done
+fi
+
+test -n "$ac_init_help" && exit $ac_status
+if $ac_init_version; then
+  cat <<\_ACEOF
+RISC-V ISA Simulator configure ?
+generated by GNU Autoconf 2.64
+
+Copyright (C) 2009 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit
+fi
+
+## ------------------------ ##
+## Autoconf initialization. ##
+## ------------------------ ##
+
+# ac_fn_c_try_compile LINENO
+# --------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext
+  if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  return $ac_retval
+
+} # ac_fn_c_try_compile
+
+# ac_fn_cxx_try_compile LINENO
+# ----------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_cxx_try_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext
+  if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  return $ac_retval
+
+} # ac_fn_cxx_try_compile
+
+# ac_fn_c_try_cpp LINENO
+# ----------------------
+# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_cpp ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } >/dev/null && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+    ac_retval=1
+fi
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  return $ac_retval
+
+} # ac_fn_c_try_cpp
+
+# ac_fn_c_try_run LINENO
+# ----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
+# that executables *can* be run.
+ac_fn_c_try_run ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: program exited with status $ac_status" >&5
+       $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       ac_retval=$ac_status
+fi
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  return $ac_retval
+
+} # ac_fn_c_try_run
+
+# ac_fn_c_try_link LINENO
+# -----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_link ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest$ac_exeext
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext && {
+	 test "$cross_compiling" = yes ||
+	 $as_test_x conftest$ac_exeext
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+  # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+  # interfere with the next link command; also delete a directory that is
+  # left behind by Apple's compiler.  We do this before executing the actions.
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  return $ac_retval
+
+} # ac_fn_c_try_link
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by RISC-V ISA Simulator $as_me ?, which was
+generated by GNU Autoconf 2.64.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo      = `(/usr/bin/hostinfo) 2>/dev/null      || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    $as_echo "PATH: $as_dir"
+  done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *\'*)
+      ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+    2)
+      as_fn_append ac_configure_args1 " '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      as_fn_append ac_configure_args " '$ac_arg'"
+      ;;
+    esac
+  done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    cat <<\_ASBOX
+## ---------------- ##
+## Cache variables. ##
+## ---------------- ##
+_ASBOX
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+(
+  for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+  (set) 2>&1 |
+    case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      sed -n \
+	"s/'\''/'\''\\\\'\'''\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+      ;; #(
+    *)
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+)
+    echo
+
+    cat <<\_ASBOX
+## ----------------- ##
+## Output variables. ##
+## ----------------- ##
+_ASBOX
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=\$$ac_var
+      case $ac_val in
+      *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+      esac
+      $as_echo "$ac_var='\''$ac_val'\''"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      cat <<\_ASBOX
+## ------------------- ##
+## File substitutions. ##
+## ------------------- ##
+_ASBOX
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=\$$ac_var
+	case $ac_val in
+	*\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+	esac
+	$as_echo "$ac_var='\''$ac_val'\''"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      cat <<\_ASBOX
+## ----------- ##
+## confdefs.h. ##
+## ----------- ##
+_ASBOX
+      echo
+      cat confdefs.h
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      $as_echo "$as_me: caught signal $ac_signal"
+    $as_echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core core.conftest.* &&
+    rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+$as_echo "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_URL "$PACKAGE_URL"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+ac_site_file1=NONE
+ac_site_file2=NONE
+if test -n "$CONFIG_SITE"; then
+  ac_site_file1=$CONFIG_SITE
+elif test "x$prefix" != xNONE; then
+  ac_site_file1=$prefix/share/config.site
+  ac_site_file2=$prefix/etc/config.site
+else
+  ac_site_file1=$ac_default_prefix/share/config.site
+  ac_site_file2=$ac_default_prefix/etc/config.site
+fi
+for ac_site_file in "$ac_site_file1" "$ac_site_file2"
+do
+  test "x$ac_site_file" = xNONE && continue
+  if test -r "$ac_site_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+$as_echo "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file"
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special
+  # files actually), so we avoid doing that.
+  if test -f "$cache_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+$as_echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . "$cache_file";;
+      *)                      . "./$cache_file";;
+    esac
+  fi
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+$as_echo "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val=\$ac_cv_env_${ac_var}_value
+  eval ac_new_val=\$ac_env_${ac_var}_value
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	# differences in whitespace do not lead to failure.
+	ac_old_val_w=`echo x $ac_old_val`
+	ac_new_val_w=`echo x $ac_new_val`
+	if test "$ac_old_val_w" != "$ac_new_val_w"; then
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	  ac_cache_corrupted=:
+	else
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+	  eval $ac_var=\$ac_old_val
+	fi
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
+$as_echo "$as_me:   former value:  \`$ac_old_val'" >&2;}
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
+$as_echo "$as_me:   current value: \`$ac_new_val'" >&2;}
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  as_fn_error "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+ac_aux_dir=
+for ac_dir in scripts "$srcdir"/scripts; do
+  for ac_t in install-sh install.sh shtool; do
+    if test -f "$ac_dir/$ac_t"; then
+      ac_aux_dir=$ac_dir
+      ac_install_sh="$ac_aux_dir/$ac_t -c"
+      break 2
+    fi
+  done
+done
+if test -z "$ac_aux_dir"; then
+  as_fn_error "cannot find install-sh, install.sh, or shtool in scripts \"$srcdir\"/scripts" "$LINENO" 5
+fi
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+ac_config_guess="$SHELL $ac_aux_dir/config.guess"  # Please don't use this var.
+ac_config_sub="$SHELL $ac_aux_dir/config.sub"  # Please don't use this var.
+ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
+
+
+# Make sure we can run config.sub.
+$SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 ||
+  as_fn_error "cannot run $SHELL $ac_aux_dir/config.sub" "$LINENO" 5
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
+$as_echo_n "checking build system type... " >&6; }
+if test "${ac_cv_build+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_build_alias=$build_alias
+test "x$ac_build_alias" = x &&
+  ac_build_alias=`$SHELL "$ac_aux_dir/config.guess"`
+test "x$ac_build_alias" = x &&
+  as_fn_error "cannot guess build type; you must specify one" "$LINENO" 5
+ac_cv_build=`$SHELL "$ac_aux_dir/config.sub" $ac_build_alias` ||
+  as_fn_error "$SHELL $ac_aux_dir/config.sub $ac_build_alias failed" "$LINENO" 5
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
+$as_echo "$ac_cv_build" >&6; }
+case $ac_cv_build in
+*-*-*) ;;
+*) as_fn_error "invalid value of canonical build" "$LINENO" 5;;
+esac
+build=$ac_cv_build
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_build
+shift
+build_cpu=$1
+build_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+build_os=$*
+IFS=$ac_save_IFS
+case $build_os in *\ *) build_os=`echo "$build_os" | sed 's/ /-/g'`;; esac
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
+$as_echo_n "checking host system type... " >&6; }
+if test "${ac_cv_host+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "x$host_alias" = x; then
+  ac_cv_host=$ac_cv_build
+else
+  ac_cv_host=`$SHELL "$ac_aux_dir/config.sub" $host_alias` ||
+    as_fn_error "$SHELL $ac_aux_dir/config.sub $host_alias failed" "$LINENO" 5
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
+$as_echo "$ac_cv_host" >&6; }
+case $ac_cv_host in
+*-*-*) ;;
+*) as_fn_error "invalid value of canonical host" "$LINENO" 5;;
+esac
+host=$ac_cv_host
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_host
+shift
+host_cpu=$1
+host_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+host_os=$*
+IFS=$ac_save_IFS
+case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
+
+
+
+#-------------------------------------------------------------------------
+# Checks for programs
+#-------------------------------------------------------------------------
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+          if test -n "$ac_tool_prefix"; then
+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  fi
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl.exe
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl.exe
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CC" && break
+done
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+fi
+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "no acceptable C compiler found in \$PATH
+See \`config.log' for more details." "$LINENO" 5; }
+
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    rm -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdio.h>
+int
+main ()
+{
+FILE *f = fopen ("conftest.out", "w");
+ return ferror (f) || fclose (f) != 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out conftest.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+$as_echo_n "checking for C compiler default output file name... " >&6; }
+ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+
+# The possible output files:
+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
+
+ac_rmfiles=
+for ac_file in $ac_files
+do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    * ) ac_rmfiles="$ac_rmfiles $ac_file";;
+  esac
+done
+rm -f $ac_rmfiles
+
+if { { ac_try="$ac_link_default"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link_default") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
+# in a Makefile.  We should not override ac_cv_exeext if it was cached,
+# so that the user can short-circuit this test for compilers unknown to
+# Autoconf.
+for ac_file in $ac_files ''
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no;
+	then :; else
+	   ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	fi
+	# We set ac_cv_exeext here because the later test for it is not
+	# safe: cross compilers may not add the suffix if given an `-o'
+	# argument, so we may need to know it at that point already.
+	# Even if this section looks crufty: it has the advantage of
+	# actually working.
+	break;;
+    * )
+	break;;
+  esac
+done
+test "$ac_cv_exeext" = no && ac_cv_exeext=
+
+else
+  ac_file=''
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+$as_echo "$ac_file" >&6; }
+if test -z "$ac_file"; then :
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ as_fn_set_status 77
+as_fn_error "C compiler cannot create executables
+See \`config.log' for more details." "$LINENO" 5; }; }
+fi
+ac_exeext=$ac_cv_exeext
+
+# Check that the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+$as_echo_n "checking whether the C compiler works... " >&6; }
+# If not cross compiling, check that we can run a simple program.
+if test "$cross_compiling" != yes; then
+  if { ac_try='./$ac_file'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." "$LINENO" 5; }
+    fi
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+
+rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out conftest.out
+ac_clean_files=$ac_clean_files_save
+# Check that the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+$as_echo_n "checking whether we are cross compiling... " >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+$as_echo "$cross_compiling" >&6; }
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+$as_echo_n "checking for suffix of executables... " >&6; }
+if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  break;;
+    * ) break;;
+  esac
+done
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." "$LINENO" 5; }
+fi
+rm -f conftest$ac_cv_exeext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+$as_echo "$ac_cv_exeext" >&6; }
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+$as_echo_n "checking for suffix of object files... " >&6; }
+if test "${ac_cv_objext+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  for ac_file in conftest.o conftest.obj conftest.*; do
+  test -f "$ac_file" || continue;
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." "$LINENO" 5; }
+fi
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+$as_echo "$ac_cv_objext" >&6; }
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if test "${ac_cv_c_compiler_gnu+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_compiler_gnu=yes
+else
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if test "${ac_cv_prog_cc_g+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_save_c_werror_flag=$ac_c_werror_flag
+   ac_c_werror_flag=yes
+   ac_cv_prog_cc_g=no
+   CFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+else
+  CFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+  ac_c_werror_flag=$ac_save_c_werror_flag
+	 CFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+   ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if test "${ac_cv_prog_cc_c89+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+	-Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+  test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+  x)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+  xno)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+  *)
+    CC="$CC $ac_cv_prog_cc_c89"
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+if test -z "$CXX"; then
+  if test -n "$CCC"; then
+    CXX=$CCC
+  else
+    if test -n "$ac_tool_prefix"; then
+  for ac_prog in g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC xlC_r xlC
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CXX+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CXX"; then
+  ac_cv_prog_CXX="$CXX" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CXX="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CXX=$ac_cv_prog_CXX
+if test -n "$CXX"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
+$as_echo "$CXX" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$CXX" && break
+  done
+fi
+if test -z "$CXX"; then
+  ac_ct_CXX=$CXX
+  for ac_prog in g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC xlC_r xlC
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CXX+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CXX"; then
+  ac_cv_prog_ac_ct_CXX="$ac_ct_CXX" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_CXX="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CXX=$ac_cv_prog_ac_ct_CXX
+if test -n "$ac_ct_CXX"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CXX" >&5
+$as_echo "$ac_ct_CXX" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CXX" && break
+done
+
+  if test "x$ac_ct_CXX" = x; then
+    CXX="g++"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CXX=$ac_ct_CXX
+  fi
+fi
+
+  fi
+fi
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C++ compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    rm -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C++ compiler" >&5
+$as_echo_n "checking whether we are using the GNU C++ compiler... " >&6; }
+if test "${ac_cv_cxx_compiler_gnu+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+  ac_compiler_gnu=yes
+else
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_cxx_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cxx_compiler_gnu" >&5
+$as_echo "$ac_cv_cxx_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+  GXX=yes
+else
+  GXX=
+fi
+ac_test_CXXFLAGS=${CXXFLAGS+set}
+ac_save_CXXFLAGS=$CXXFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX accepts -g" >&5
+$as_echo_n "checking whether $CXX accepts -g... " >&6; }
+if test "${ac_cv_prog_cxx_g+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_save_cxx_werror_flag=$ac_cxx_werror_flag
+   ac_cxx_werror_flag=yes
+   ac_cv_prog_cxx_g=no
+   CXXFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+  ac_cv_prog_cxx_g=yes
+else
+  CXXFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+
+else
+  ac_cxx_werror_flag=$ac_save_cxx_werror_flag
+	 CXXFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+  ac_cv_prog_cxx_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+   ac_cxx_werror_flag=$ac_save_cxx_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cxx_g" >&5
+$as_echo "$ac_cv_prog_cxx_g" >&6; }
+if test "$ac_test_CXXFLAGS" = set; then
+  CXXFLAGS=$ac_save_CXXFLAGS
+elif test $ac_cv_prog_cxx_g = yes; then
+  if test "$GXX" = yes; then
+    CXXFLAGS="-g -O2"
+  else
+    CXXFLAGS="-g"
+  fi
+else
+  if test "$GXX" = yes; then
+    CXXFLAGS="-O2"
+  else
+    CXXFLAGS=
+  fi
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AR+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AR"; then
+  ac_cv_prog_AR="$AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_AR="${ac_tool_prefix}ar"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AR=$ac_cv_prog_AR
+if test -n "$AR"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
+$as_echo "$AR" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AR"; then
+  ac_ct_AR=$AR
+  # Extract the first word of "ar", so it can be a program name with args.
+set dummy ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_AR+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_AR"; then
+  ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_AR="ar"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AR=$ac_cv_prog_ac_ct_AR
+if test -n "$ac_ct_AR"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
+$as_echo "$ac_ct_AR" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_AR" = x; then
+    AR=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    AR=$ac_ct_AR
+  fi
+else
+  AR="$ac_cv_prog_AR"
+fi
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_RANLIB+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+$as_echo "$RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+  ac_ct_RANLIB=$RANLIB
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_RANLIB+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_RANLIB"; then
+  ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+$as_echo "$ac_ct_RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_RANLIB" = x; then
+    RANLIB=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    RANLIB=$ac_ct_RANLIB
+  fi
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+
+#-------------------------------------------------------------------------
+# MCPPBS specific program checks
+#-------------------------------------------------------------------------
+# These macros check to see if we can do a stow-based install and also
+# check for an isa simulator suitable for running the unit test programs
+# via the makefile.
+
+# Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+# Reject install programs that cannot install multiple files.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+$as_echo_n "checking for a BSD-compatible install... " >&6; }
+if test -z "$INSTALL"; then
+if test "${ac_cv_path_install+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    # Account for people who put trailing slashes in PATH elements.
+case $as_dir/ in #((
+  ./ | .// | /[cC]/* | \
+  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+  ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
+  /usr/ucb/* ) ;;
+  *)
+    # OSF1 and SCO ODT 3.0 have their own names for install.
+    # Don't use installbsd from OSF since it installs stuff as root
+    # by default.
+    for ac_prog in ginstall scoinst install; do
+      for ac_exec_ext in '' $ac_executable_extensions; do
+	if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
+	  if test $ac_prog = install &&
+	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    :
+	  elif test $ac_prog = install &&
+	    grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # program-specific install script used by HP pwplus--don't use.
+	    :
+	  else
+	    rm -rf conftest.one conftest.two conftest.dir
+	    echo one > conftest.one
+	    echo two > conftest.two
+	    mkdir conftest.dir
+	    if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" &&
+	      test -s conftest.one && test -s conftest.two &&
+	      test -s conftest.dir/conftest.one &&
+	      test -s conftest.dir/conftest.two
+	    then
+	      ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+	      break 3
+	    fi
+	  fi
+	fi
+      done
+    done
+    ;;
+esac
+
+  done
+IFS=$as_save_IFS
+
+rm -rf conftest.one conftest.two conftest.dir
+
+fi
+  if test "${ac_cv_path_install+set}" = set; then
+    INSTALL=$ac_cv_path_install
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    INSTALL=$ac_install_sh
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+$as_echo "$INSTALL" >&6; }
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+
+
+  # Configure command line option
+
+  # Check whether --enable-stow was given.
+if test "${enable_stow+set}" = set; then :
+  enableval=$enable_stow; enable_stow="yes"
+else
+  enable_stow="no"
+fi
+
+
+
+
+  # Environment variables
+
+
+
+
+  # Check for install script
+
+
+
+  # Deterimine if native build and set prefix appropriately
+
+  if  test ${enable_stow} = "yes" ; then :
+
+    for ac_prog in stow
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_stow+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$stow"; then
+  ac_cv_prog_stow="$stow" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_stow="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+stow=$ac_cv_prog_stow
+if test -n "$stow"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $stow" >&5
+$as_echo "$stow" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$stow" && break
+done
+test -n "$stow" || stow="no"
+
+    if  test ${stow} = "no" ; then :
+
+      as_fn_error "Cannot use --enable-stow since stow is not available" "$LINENO" 5
+
+fi
+
+    # Check if native or non-native build
+
+    if  test "${build}" = "${host}" ; then :
+
+
+      # build == host so this is a native build. Make sure --prefix not
+      # set and $STOW_PREFIX is set, then set prefix=$STOW_PREFIX.
+
+      if  test "${prefix}" = "NONE" && test -n "${STOW_PREFIX}" ; then :
+
+        prefix="${STOW_PREFIX}"
+        { $as_echo "$as_me:${as_lineno-$LINENO}: Using \$STOW_PREFIX from environment" >&5
+$as_echo "$as_me: Using \$STOW_PREFIX from environment" >&6;}
+        { $as_echo "$as_me:${as_lineno-$LINENO}: prefix=${prefix}" >&5
+$as_echo "$as_me: prefix=${prefix}" >&6;}
+
+fi
+
+
+else
+
+
+      # build != host so this is a non-native build. Make sure --prefix
+      # not set and $STOW_ROOT is set, then set
+      # prefix=$STOW_ROOT/${host_alias}.
+
+      if  test "${prefix}" = "NONE" && test -n "${STOW_ROOT}" ; then :
+
+        prefix="${STOW_ROOT}/${host_alias}"
+        { $as_echo "$as_me:${as_lineno-$LINENO}: Using \$STOW_ROOT from environment" >&5
+$as_echo "$as_me: Using \$STOW_ROOT from environment" >&6;}
+        { $as_echo "$as_me:${as_lineno-$LINENO}: prefix=${prefix}" >&5
+$as_echo "$as_me: prefix=${prefix}" >&6;}
+
+fi
+
+
+fi
+
+
+fi
+
+
+
+  if  test "${build}" != "${host}" ; then :
+
+    if test -n "$ac_tool_prefix"; then
+  for ac_prog in isa-run run
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_RUN+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$RUN"; then
+  ac_cv_prog_RUN="$RUN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_RUN="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+RUN=$ac_cv_prog_RUN
+if test -n "$RUN"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RUN" >&5
+$as_echo "$RUN" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$RUN" && break
+  done
+fi
+if test -z "$RUN"; then
+  ac_ct_RUN=$RUN
+  for ac_prog in isa-run run
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_RUN+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_RUN"; then
+  ac_cv_prog_ac_ct_RUN="$ac_ct_RUN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_RUN="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RUN=$ac_cv_prog_ac_ct_RUN
+if test -n "$ac_ct_RUN"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RUN" >&5
+$as_echo "$ac_ct_RUN" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_RUN" && break
+done
+
+  if test "x$ac_ct_RUN" = x; then
+    RUN="no"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    RUN=$ac_ct_RUN
+  fi
+fi
+
+    if  test ${RUN} = "no" ; then :
+
+      as_fn_error "Cannot find simulator for target ${target_alias}" "$LINENO" 5
+
+fi
+
+else
+
+    RUN=""
+
+fi
+
+
+
+
+#-------------------------------------------------------------------------
+# Checks for header files
+#-------------------------------------------------------------------------
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+$as_echo_n "checking how to run the C preprocessor... " >&6; }
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if test "${ac_cv_prog_CPP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+      # Double quotes because CPP needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+$as_echo "$CPP" >&6; }
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." "$LINENO" 5; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+if test "${ac_cv_path_GREP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$GREP"; then
+  ac_path_GREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in grep ggrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+  # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'GREP' >> "conftest.nl"
+    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_GREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_GREP="$ac_path_GREP"
+      ac_path_GREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_GREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_GREP"; then
+    as_fn_error "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+$as_echo "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+$as_echo_n "checking for egrep... " >&6; }
+if test "${ac_cv_path_EGREP+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+   then ac_cv_path_EGREP="$GREP -E"
+   else
+     if test -z "$EGREP"; then
+  ac_path_EGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in egrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+  # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'EGREP' >> "conftest.nl"
+    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_EGREP="$ac_path_EGREP"
+      ac_path_EGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_EGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_EGREP"; then
+    as_fn_error "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_EGREP=$EGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+$as_echo "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+$as_echo_n "checking for ANSI C header files... " >&6; }
+if test "${ac_cv_header_stdc+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_header_stdc=yes
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then :
+  :
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ctype.h>
+#include <stdlib.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      return 2;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+$as_echo "$ac_cv_header_stdc" >&6; }
+if test $ac_cv_header_stdc = yes; then
+
+$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+
+#-------------------------------------------------------------------------
+# Default compiler flags
+#-------------------------------------------------------------------------
+
+CFLAGS="-Wall -O2"
+
+CXXFLAGS="-Wall -O2 -Wno-pmf-conversions"
+
+
+#-------------------------------------------------------------------------
+# MCPPBS subproject list
+#-------------------------------------------------------------------------
+# Order list so that subprojects only depend on those listed earlier.
+# The '*' suffix indicates an optional subproject. The '**' suffix
+# indicates an optional subproject which is also the name of a group.
+
+
+
+  # Add command line argument to enable all optional subprojects
+
+  # Check whether --enable-optional-subprojects was given.
+if test "${enable_optional_subprojects+set}" = set; then :
+  enableval=$enable_optional_subprojects;
+fi
+
+
+  # Loop through the subprojects given in the macro argument
+
+
+
+    # Determine if this is a required or an optional subproject
+
+
+
+    # Determine if there is a group with the same name
+
+
+
+    # Create variations of the subproject name suitable for use as a CPP
+    # enabled define, a shell enabled variable, and a shell function
+
+
+
+
+
+
+
+
+
+
+
+    # Add subproject to our running list
+
+    subprojects="$subprojects riscv"
+
+    # Process the subproject appropriately. If enabled add it to the
+    # $enabled_subprojects running shell variable, set a
+    # SUBPROJECT_ENABLED C define, and include the appropriate
+    # 'subproject.ac'.
+
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: configuring default subproject : riscv" >&5
+$as_echo "$as_me: configuring default subproject : riscv" >&6;}
+      ac_config_files="$ac_config_files riscv.mk:riscv/riscv.mk.in"
+
+      enable_riscv_sproj="yes"
+      subprojects_enabled="$subprojects_enabled riscv"
+
+$as_echo "#define RISCV_ENABLED /**/" >>confdefs.h
+
+      # Check whether --enable-fpu was given.
+if test "${enable_fpu+set}" = set; then :
+  enableval=$enable_fpu;
+fi
+
+if test "x$enable_fpu" != "xno"; then :
+
+
+$as_echo "#define RISCV_ENABLE_FPU /**/" >>confdefs.h
+
+
+fi
+
+# Check whether --enable-64bit was given.
+if test "${enable_64bit+set}" = set; then :
+  enableval=$enable_64bit;
+fi
+
+if test "x$enable_64bit" != "xno"; then :
+
+
+$as_echo "#define RISCV_ENABLE_64BIT /**/" >>confdefs.h
+
+
+fi
+
+# Check whether --enable-rvc was given.
+if test "${enable_rvc+set}" = set; then :
+  enableval=$enable_rvc;
+fi
+
+if test "x$enable_rvc" = "xyes"; then :
+
+
+$as_echo "#define RISCV_ENABLE_RVC /**/" >>confdefs.h
+
+
+fi
+
+# Check whether --enable-vec was given.
+if test "${enable_vec+set}" = set; then :
+  enableval=$enable_vec;
+fi
+
+if test "x$enable_vec" != "xno"; then :
+
+
+$as_echo "#define RISCV_ENABLE_VEC /**/" >>confdefs.h
+
+
+fi
+
+libopc=`dirname \`which riscv-gcc\``/../`$ac_config_guess`/riscv/lib/libopcodes.a
+as_ac_File=`$as_echo "ac_cv_file_$libopc" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $libopc" >&5
+$as_echo_n "checking for $libopc... " >&6; }
+if { as_var=$as_ac_File; eval "test \"\${$as_var+set}\" = set"; }; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "$libopc"; then
+  eval "$as_ac_File=yes"
+else
+  eval "$as_ac_File=no"
+fi
+fi
+eval ac_res=\$$as_ac_File
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+eval as_val=\$$as_ac_File
+   if test "x$as_val" = x""yes; then :
+
+cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$libopc" | $as_tr_cpp` 1
+_ACEOF
+have_libopcodes="yes"
+else
+  have_libopcodes="no"
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing bfd_init" >&5
+$as_echo_n "checking for library containing bfd_init... " >&6; }
+if test "${ac_cv_search_bfd_init+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char bfd_init ();
+int
+main ()
+{
+return bfd_init ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' bfd; do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_search_bfd_init=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext
+  if test "${ac_cv_search_bfd_init+set}" = set; then :
+  break
+fi
+done
+if test "${ac_cv_search_bfd_init+set}" = set; then :
+
+else
+  ac_cv_search_bfd_init=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_bfd_init" >&5
+$as_echo "$ac_cv_search_bfd_init" >&6; }
+ac_res=$ac_cv_search_bfd_init
+if test "$ac_res" != no; then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+else
+  have_libopcodes="no"
+fi
+
+
+if test "$have_libopcodes" = "no"; then :
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Could not find opcodes library" >&5
+$as_echo "$as_me: WARNING: Could not find opcodes library" >&2;}
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Build will not include disassembly support" >&5
+$as_echo "$as_me: WARNING: Build will not include disassembly support" >&2;}
+
+else
+
+  LIBS="$libopc $LIBS"
+
+$as_echo "#define RISCV_HAVE_LIBOPCODES /**/" >>confdefs.h
+
+
+fi
+
+
+
+
+
+    # Determine if this is a required or an optional subproject
+
+
+
+    # Determine if there is a group with the same name
+
+
+
+    # Create variations of the subproject name suitable for use as a CPP
+    # enabled define, a shell enabled variable, and a shell function
+
+
+
+
+
+
+
+
+
+
+
+    # Add subproject to our running list
+
+    subprojects="$subprojects softfloat"
+
+    # Process the subproject appropriately. If enabled add it to the
+    # $enabled_subprojects running shell variable, set a
+    # SUBPROJECT_ENABLED C define, and include the appropriate
+    # 'subproject.ac'.
+
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: configuring default subproject : softfloat" >&5
+$as_echo "$as_me: configuring default subproject : softfloat" >&6;}
+      ac_config_files="$ac_config_files softfloat.mk:softfloat/softfloat.mk.in"
+
+      enable_softfloat_sproj="yes"
+      subprojects_enabled="$subprojects_enabled softfloat"
+
+$as_echo "#define SOFTFLOAT_ENABLED /**/" >>confdefs.h
+
+
+
+
+
+
+    # Determine if this is a required or an optional subproject
+
+
+
+    # Determine if there is a group with the same name
+
+
+
+    # Create variations of the subproject name suitable for use as a CPP
+    # enabled define, a shell enabled variable, and a shell function
+
+
+
+
+
+
+
+
+
+
+
+    # Add subproject to our running list
+
+    subprojects="$subprojects softfloat_riscv"
+
+    # Process the subproject appropriately. If enabled add it to the
+    # $enabled_subprojects running shell variable, set a
+    # SUBPROJECT_ENABLED C define, and include the appropriate
+    # 'subproject.ac'.
+
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: configuring default subproject : softfloat_riscv" >&5
+$as_echo "$as_me: configuring default subproject : softfloat_riscv" >&6;}
+      ac_config_files="$ac_config_files softfloat_riscv.mk:softfloat_riscv/softfloat_riscv.mk.in"
+
+      enable_softfloat_riscv_sproj="yes"
+      subprojects_enabled="$subprojects_enabled softfloat_riscv"
+
+$as_echo "#define SOFTFLOAT_RISCV_ENABLED /**/" >>confdefs.h
+
+
+
+
+
+
+  # Output make variables
+
+
+
+
+
+
+#-------------------------------------------------------------------------
+# MCPPBS subproject groups
+#-------------------------------------------------------------------------
+# If a group has the same name as a subproject then you must add the
+# '**' suffix in the subproject list above. The list of subprojects in a
+# group should be ordered so that subprojets only depend on those listed
+# earlier. Here is an example:
+#
+#  MCPPBS_GROUP( [group-name], [sproja,sprojb,...] )
+#
+
+#-------------------------------------------------------------------------
+# Output
+#-------------------------------------------------------------------------
+
+ac_config_headers="$ac_config_headers config.h"
+
+ac_config_files="$ac_config_files Makefile"
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+
+  (set) 2>&1 |
+    case $as_nl`(ac_space=' '; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      # `set' does not quote correctly, so add quotes: double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \.
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;; #(
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+) |
+  sed '
+     /^ac_cv_env_/b end
+     t clear
+     :clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+  if test -w "$cache_file"; then
+    test "x$cache_file" != "x/dev/null" &&
+      { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+$as_echo "$as_me: updating cache $cache_file" >&6;}
+    cat confcache >$cache_file
+  else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+  ac_i=`$as_echo "$ac_i" | sed "$ac_script"`
+  # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
+  #    will be set to the directory where LIBOBJS objects are built.
+  as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+  as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+
+: ${CONFIG_STATUS=./config.status}
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+$as_echo "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+
+# as_fn_error ERROR [LINENO LOG_FD]
+# ---------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with status $?, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$?; test $as_status -eq 0 && as_status=1
+  if test "$3"; then
+    as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3
+  fi
+  $as_echo "$as_me: error: $1" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -p'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -p'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -p'
+  fi
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+	test -d "$1/.";
+      else
+	case $1 in #(
+	-*)set "./$1";;
+	esac;
+	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+	???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by RISC-V ISA Simulator $as_me ?, which was
+generated by GNU Autoconf 2.64.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration.  Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number and configuration settings, then exit
+  -q, --quiet, --silent
+                   do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+      --file=FILE[:TEMPLATE]
+                   instantiate the configuration file FILE
+      --header=FILE[:TEMPLATE]
+                   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Report bugs to <Andrew Waterman>."
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_version="\\
+RISC-V ISA Simulator config.status ?
+configured by $0, generated by GNU Autoconf 2.64,
+  with options \\"`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"
+
+Copyright (C) 2009 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+INSTALL='$INSTALL'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=*)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  *)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+    $as_echo "$ac_cs_version"; exit ;;
+  --debug | --debu | --deb | --de | --d | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    as_fn_append CONFIG_FILES " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --he | --h)
+    # Conflict between --help and --header
+    as_fn_error "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+  --help | --hel | -h )
+    $as_echo "$ac_cs_usage"; exit ;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) as_fn_error "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+  *) as_fn_append ac_config_targets " $1"
+     ac_need_defaults=false ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+  set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  shift
+  \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
+  CONFIG_SHELL='$SHELL'
+  export CONFIG_SHELL
+  exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+  $as_echo "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+  case $ac_config_target in
+    "riscv.mk") CONFIG_FILES="$CONFIG_FILES riscv.mk:riscv/riscv.mk.in" ;;
+    "softfloat.mk") CONFIG_FILES="$CONFIG_FILES softfloat.mk:softfloat/softfloat.mk.in" ;;
+    "softfloat_riscv.mk") CONFIG_FILES="$CONFIG_FILES softfloat_riscv.mk:softfloat_riscv/softfloat_riscv.mk.in" ;;
+    "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;;
+    "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+
+  *) as_fn_error "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+  esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+  tmp=
+  trap 'exit_status=$?
+  { test -z "$tmp" || test ! -d "$tmp" || rm -fr "$tmp"; } && exit $exit_status
+' 0
+  trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+  test -n "$tmp" && test -d "$tmp"
+}  ||
+{
+  tmp=./conf$$-$RANDOM
+  (umask 077 && mkdir "$tmp")
+} || as_fn_error "cannot create a temporary directory in ." "$LINENO" 5
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+  eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+  ac_cs_awk_cr='\r'
+else
+  ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+  echo "cat >conf$$subs.awk <<_ACEOF" &&
+  echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+  echo "_ACEOF"
+} >conf$$subs.sh ||
+  as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '$'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+  . ./conf$$subs.sh ||
+    as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+
+  ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+  if test $ac_delim_n = $ac_delim_num; then
+    break
+  elif $ac_last_try; then
+    as_fn_error "could not make $CONFIG_STATUS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\).*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\).*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' <conf$$subs.awk | sed '
+/^[^""]/{
+  N
+  s/\n//
+}
+' >>$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$tmp/subs1.awk" <<_ACAWK &&
+  for (key in S) S_is_set[key] = 1
+  FS = ""
+
+}
+{
+  line = $ 0
+  nfields = split(line, field, "@")
+  substed = 0
+  len = length(field[1])
+  for (i = 2; i < nfields; i++) {
+    key = field[i]
+    keylen = length(key)
+    if (S_is_set[key]) {
+      value = S[key]
+      line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+      len += length(value) + length(field[++i])
+      substed = 1
+    } else
+      len += 1 + keylen
+  }
+
+  print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+  sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+  cat
+fi < "$tmp/subs1.awk" > "$tmp/subs.awk" \
+  || as_fn_error "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove $(srcdir),
+# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=/{
+s/:*\$(srcdir):*/:/
+s/:*\${srcdir}:*/:/
+s/:*@srcdir@:*/:/
+s/^\([^=]*=[	 ]*\):*/\1/
+s/:*$//
+s/^[^=]*=[	 ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+  ac_t=`sed -n "/$ac_delim/p" confdefs.h`
+  if test -z "$ac_t"; then
+    break
+  elif $ac_last_try; then
+    as_fn_error "could not make $CONFIG_HEADERS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any.  Preserve backslash
+# newline sequences.
+
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[	 ]*#[	 ]*define[	 ][	 ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' <confdefs.h | sed '
+s/'"$ac_delim"'/"\\\
+"/g' >>$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  for (key in D) D_is_set[key] = 1
+  FS = ""
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+  line = \$ 0
+  split(line, arg, " ")
+  if (arg[1] == "#") {
+    defundef = arg[2]
+    mac1 = arg[3]
+  } else {
+    defundef = substr(arg[1], 2)
+    mac1 = arg[2]
+  }
+  split(mac1, mac2, "(") #)
+  macro = mac2[1]
+  prefix = substr(line, 1, index(line, defundef) - 1)
+  if (D_is_set[macro]) {
+    # Preserve the white space surrounding the "#".
+    print prefix "define", macro P[macro] D[macro]
+    next
+  } else {
+    # Replace #undef with comments.  This is necessary, for example,
+    # in the case of _POSIX_SOURCE, which is predefined and required
+    # on some systems where configure will not decide to define it.
+    if (defundef == "undef") {
+      print "/*", prefix defundef, macro, "*/"
+      next
+    }
+  }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+  as_fn_error "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS    "
+shift
+for ac_tag
+do
+  case $ac_tag in
+  :[FHLC]) ac_mode=$ac_tag; continue;;
+  esac
+  case $ac_mode$ac_tag in
+  :[FHL]*:*);;
+  :L* | :C*:*) as_fn_error "invalid tag \`$ac_tag'" "$LINENO" 5;;
+  :[FH]-) ac_tag=-:-;;
+  :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+  esac
+  ac_save_IFS=$IFS
+  IFS=:
+  set x $ac_tag
+  IFS=$ac_save_IFS
+  shift
+  ac_file=$1
+  shift
+
+  case $ac_mode in
+  :L) ac_source=$1;;
+  :[FH])
+    ac_file_inputs=
+    for ac_f
+    do
+      case $ac_f in
+      -) ac_f="$tmp/stdin";;
+      *) # Look for the file first in the build tree, then in the source tree
+	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
+	 # because $ac_f cannot contain `:'.
+	 test -f "$ac_f" ||
+	   case $ac_f in
+	   [\\/$]*) false;;
+	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+	   esac ||
+	   as_fn_error "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+      esac
+      case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+      as_fn_append ac_file_inputs " '$ac_f'"
+    done
+
+    # Let's still pretend it is `configure' which instantiates (i.e., don't
+    # use $as_me), people would be surprised to read:
+    #    /* config.h.  Generated by config.status.  */
+    configure_input='Generated from '`
+	  $as_echo "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+	`' by configure.'
+    if test x"$ac_file" != x-; then
+      configure_input="$ac_file.  $configure_input"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+$as_echo "$as_me: creating $ac_file" >&6;}
+    fi
+    # Neutralize special characters interpreted by sed in replacement strings.
+    case $configure_input in #(
+    *\&* | *\|* | *\\* )
+       ac_sed_conf_input=`$as_echo "$configure_input" |
+       sed 's/[\\\\&|]/\\\\&/g'`;; #(
+    *) ac_sed_conf_input=$configure_input;;
+    esac
+
+    case $ac_tag in
+    *:-:* | *:-) cat >"$tmp/stdin" \
+      || as_fn_error "could not create $ac_file" "$LINENO" 5 ;;
+    esac
+    ;;
+  esac
+
+  ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  as_dir="$ac_dir"; as_fn_mkdir_p
+  ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+  case $ac_mode in
+  :F)
+  #
+  # CONFIG_FILE
+  #
+
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
+  esac
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+  p
+  q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  ac_datarootdir_hack='
+  s&@datadir@&$datadir&g
+  s&@docdir@&$docdir&g
+  s&@infodir@&$infodir&g
+  s&@localedir@&$localedir&g
+  s&@mandir@&$mandir&g
+  s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+s&@INSTALL@&$ac_INSTALL&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$tmp/subs.awk" >$tmp/out \
+  || as_fn_error "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+  { ac_out=`sed -n '/\${datarootdir}/p' "$tmp/out"`; test -n "$ac_out"; } &&
+  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' "$tmp/out"`; test -z "$ac_out"; } &&
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined." >&5
+$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined." >&2;}
+
+  rm -f "$tmp/stdin"
+  case $ac_file in
+  -) cat "$tmp/out" && rm -f "$tmp/out";;
+  *) rm -f "$ac_file" && mv "$tmp/out" "$ac_file";;
+  esac \
+  || as_fn_error "could not create $ac_file" "$LINENO" 5
+ ;;
+  :H)
+  #
+  # CONFIG_HEADER
+  #
+  if test x"$ac_file" != x-; then
+    {
+      $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs"
+    } >"$tmp/config.h" \
+      || as_fn_error "could not create $ac_file" "$LINENO" 5
+    if diff "$ac_file" "$tmp/config.h" >/dev/null 2>&1; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+$as_echo "$as_me: $ac_file is unchanged" >&6;}
+    else
+      rm -f "$ac_file"
+      mv "$tmp/config.h" "$ac_file" \
+	|| as_fn_error "could not create $ac_file" "$LINENO" 5
+    fi
+  else
+    $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs" \
+      || as_fn_error "could not create -" "$LINENO" 5
+  fi
+ ;;
+
+
+  esac
+
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+  as_fn_error "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || as_fn_exit $?
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+fi
+
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..42aa634
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,103 @@
+#=========================================================================
+# Toplevel configure.ac for the Modular C++ Build System
+#=========================================================================
+# Please read the documenation in 'mcppbs-doc.txt' for more details on
+# how the Modular C++ Build System works. For most new projects, a
+# developer will only need to make the following changes:
+#
+#  - change the project metadata listed right below
+#  - update the list of subprojects via the 'MCPPBS_SUBPROJECTS' macro
+#  - possibly add subproject groups if needed to ease configuration
+#  - add more configure checks for platform specific configuration
+#
+
+#-------------------------------------------------------------------------
+# Project metadata
+#-------------------------------------------------------------------------
+
+m4_define( proj_name,         [RISC-V ISA Simulator])
+m4_define( proj_maintainer,   [Andrew Waterman])
+m4_define( proj_abbreviation, [riscv-isa-run])
+
+#-------------------------------------------------------------------------
+# Project version information
+#-------------------------------------------------------------------------
+# Version information is meant to be managed through a version control
+# system's tags and revision numbers. In a working copy the version will
+# not be defined here (you should just use the version control system's
+# mechanisms). When we make a distribution then we can set the version
+# here as formed by the scripts/vcs-version.sh script so that the
+# distribution knows what version it came from. If you are not using
+# version control then it is fine to set this directly.
+
+m4_define( proj_version, [?])
+
+#-------------------------------------------------------------------------
+# Setup
+#-------------------------------------------------------------------------
+
+AC_INIT(proj_name,proj_version,proj_maintainer,proj_abbreviation)
+AC_CONFIG_SRCDIR([riscv/common.h])
+AC_CONFIG_AUX_DIR([scripts])
+AC_CANONICAL_BUILD
+AC_CANONICAL_HOST
+
+#-------------------------------------------------------------------------
+# Checks for programs
+#-------------------------------------------------------------------------
+
+AC_PROG_CC
+AC_PROG_CXX
+AC_CHECK_TOOL([AR],[ar])
+AC_CHECK_TOOL([RANLIB],[ranlib])
+
+#-------------------------------------------------------------------------
+# MCPPBS specific program checks
+#-------------------------------------------------------------------------
+# These macros check to see if we can do a stow-based install and also
+# check for an isa simulator suitable for running the unit test programs
+# via the makefile.
+
+MCPPBS_PROG_INSTALL
+MCPPBS_PROG_RUN
+
+#-------------------------------------------------------------------------
+# Checks for header files
+#-------------------------------------------------------------------------
+
+AC_HEADER_STDC
+
+#-------------------------------------------------------------------------
+# Default compiler flags
+#-------------------------------------------------------------------------
+
+AC_SUBST([CFLAGS],  ["-Wall -O2"])
+AC_SUBST([CXXFLAGS],["-Wall -O2 -Wno-pmf-conversions"])
+
+#-------------------------------------------------------------------------
+# MCPPBS subproject list
+#-------------------------------------------------------------------------
+# Order list so that subprojects only depend on those listed earlier.
+# The '*' suffix indicates an optional subproject. The '**' suffix
+# indicates an optional subproject which is also the name of a group.
+
+MCPPBS_SUBPROJECTS([ riscv, softfloat, softfloat_riscv ])
+
+#-------------------------------------------------------------------------
+# MCPPBS subproject groups
+#-------------------------------------------------------------------------
+# If a group has the same name as a subproject then you must add the
+# '**' suffix in the subproject list above. The list of subprojects in a
+# group should be ordered so that subprojets only depend on those listed
+# earlier. Here is an example:
+#
+#  MCPPBS_GROUP( [group-name], [sproja,sprojb,...] )
+#
+
+#-------------------------------------------------------------------------
+# Output
+#-------------------------------------------------------------------------
+
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
diff --git a/riscv/common.h b/riscv/common.h
new file mode 100644
index 0000000..801baf8
--- /dev/null
+++ b/riscv/common.h
@@ -0,0 +1,9 @@
+#ifndef _RISCV_COMMON_H
+#define _RISCV_COMMON_H
+
+#define static_assert(x)	switch (x) case 0: case (x):
+
+#define   likely(x) __builtin_expect(x, 1)
+#define unlikely(x) __builtin_expect(x, 0)
+
+#endif
diff --git a/riscv/decode.h b/riscv/decode.h
new file mode 100644
index 0000000..f78c8f4
--- /dev/null
+++ b/riscv/decode.h
@@ -0,0 +1,301 @@
+#ifndef _RISCV_DECODE_H
+#define _RISCV_DECODE_H
+
+#define __STDC_LIMIT_MACROS
+#include <stdint.h>
+#include "common.h"
+#include "config.h"
+
+typedef int int128_t __attribute__((mode(TI)));
+typedef unsigned int uint128_t __attribute__((mode(TI)));
+
+typedef int64_t sreg_t;
+typedef uint64_t reg_t;
+typedef uint64_t freg_t;
+
+const int OPCODE_BITS = 7;
+
+const int XPRID_BITS = 5;
+const int NXPR = 1 << XPRID_BITS;
+
+const int FPR_BITS = 64;
+const int FPRID_BITS = 5;
+const int NFPR = 1 << FPRID_BITS;
+
+const int IMM_BITS = 12;
+const int IMMLO_BITS = 7;
+const int TARGET_BITS = 25;
+const int FUNCT_BITS = 3;
+const int FUNCTR_BITS = 7;
+const int FFUNCT_BITS = 2;
+const int RM_BITS = 3;
+const int BIGIMM_BITS = 20;
+const int BRANCH_ALIGN_BITS = 1;
+const int JUMP_ALIGN_BITS = 1;
+
+#define SR_ET    0x0000000000000001ULL
+#define SR_EF    0x0000000000000002ULL
+#define SR_EV    0x0000000000000004ULL
+#define SR_EC    0x0000000000000008ULL
+#define SR_PS    0x0000000000000010ULL
+#define SR_S     0x0000000000000020ULL
+#define SR_UX    0x0000000000000040ULL
+#define SR_SX    0x0000000000000080ULL
+#define SR_IM    0x000000000000FF00ULL
+#define SR_VM    0x0000000000010000ULL
+#define SR_ZERO  ~(SR_ET|SR_EF|SR_EV|SR_EC|SR_PS|SR_S|SR_UX|SR_SX|SR_IM|SR_VM)
+#define SR_IM_SHIFT 8
+#define IPI_IRQ 5
+#define TIMER_IRQ 7
+
+#define CAUSE_EXCCODE 0x000000FF
+#define CAUSE_IP      0x0000FF00
+#define CAUSE_EXCCODE_SHIFT 0
+#define CAUSE_IP_SHIFT      8
+
+#define FP_RD_NE  0
+#define FP_RD_0   1
+#define FP_RD_DN  2
+#define FP_RD_UP  3
+#define FP_RD_NMM 4
+
+#define FSR_RD_SHIFT 5
+#define FSR_RD   (0x7 << FSR_RD_SHIFT)
+
+#define FPEXC_NX 0x01
+#define FPEXC_UF 0x02
+#define FPEXC_OF 0x04
+#define FPEXC_DZ 0x08
+#define FPEXC_NV 0x10
+
+#define FSR_AEXC_SHIFT 0
+#define FSR_NVA  (FPEXC_NV << FSR_AEXC_SHIFT)
+#define FSR_OFA  (FPEXC_OF << FSR_AEXC_SHIFT)
+#define FSR_UFA  (FPEXC_UF << FSR_AEXC_SHIFT)
+#define FSR_DZA  (FPEXC_DZ << FSR_AEXC_SHIFT)
+#define FSR_NXA  (FPEXC_NX << FSR_AEXC_SHIFT)
+#define FSR_AEXC (FSR_NVA | FSR_OFA | FSR_UFA | FSR_DZA | FSR_NXA)
+
+#define FSR_ZERO ~(FSR_RD | FSR_AEXC)
+
+// note: bit fields are in little-endian order
+struct itype_t
+{
+  unsigned opcode : OPCODE_BITS;
+  unsigned funct : FUNCT_BITS;
+  signed imm12 : IMM_BITS;
+  unsigned rs1 : XPRID_BITS;
+  unsigned rd : XPRID_BITS;
+};
+
+struct btype_t
+{
+  unsigned opcode : OPCODE_BITS;
+  unsigned funct : FUNCT_BITS;
+  unsigned immlo : IMMLO_BITS;
+  unsigned rs2 : XPRID_BITS;
+  unsigned rs1 : XPRID_BITS;
+  signed immhi : IMM_BITS-IMMLO_BITS;
+};
+
+struct jtype_t
+{
+  unsigned jump_opcode : OPCODE_BITS;
+  signed target : TARGET_BITS;
+};
+
+struct rtype_t
+{
+  unsigned opcode : OPCODE_BITS;
+  unsigned funct : FUNCT_BITS;
+  unsigned functr : FUNCTR_BITS;
+  unsigned rs2 : XPRID_BITS;
+  unsigned rs1 : XPRID_BITS;
+  unsigned rd : XPRID_BITS;
+};
+
+struct ltype_t
+{
+  unsigned opcode : OPCODE_BITS;
+  unsigned bigimm : BIGIMM_BITS;
+  unsigned rd : XPRID_BITS;
+};
+
+struct ftype_t
+{
+  unsigned opcode : OPCODE_BITS;
+  unsigned ffunct : FFUNCT_BITS;
+  unsigned rm : RM_BITS;
+  unsigned rs3 : FPRID_BITS;
+  unsigned rs2 : FPRID_BITS;
+  unsigned rs1 : FPRID_BITS;
+  unsigned rd  : FPRID_BITS;
+};
+
+union insn_t
+{
+  itype_t itype;
+  jtype_t jtype;
+  rtype_t rtype;
+  btype_t btype;
+  ltype_t ltype;
+  ftype_t ftype;
+  uint32_t bits;
+};
+
+#include <stdio.h>
+class do_writeback
+{
+public:
+  do_writeback(reg_t* _rf, int _rd) : rf(_rf), rd(_rd) {}
+
+  const do_writeback& operator = (reg_t rhs)
+  {
+#if 0
+    printf("R[%x] <= %llx\n",rd,(long long)rhs);
+#endif
+    rf[rd] = rhs;
+    rf[0] = 0;
+    return *this;
+  }
+
+  operator reg_t() { return rf[rd]; }
+
+private:
+  reg_t* rf;
+  int rd;
+};
+
+#define throw_illegal_instruction \
+  ({ if (utmode) throw trap_vector_illegal_instruction; \
+     else throw trap_illegal_instruction; })
+
+// helpful macros, etc
+#define RS1 XPR[insn.rtype.rs1]
+#define RS2 XPR[insn.rtype.rs2]
+#define RD do_writeback(XPR,insn.rtype.rd)
+#define RA do_writeback(XPR,1)
+#define FRS1 FPR[insn.ftype.rs1]
+#define FRS2 FPR[insn.ftype.rs2]
+#define FRS3 FPR[insn.ftype.rs3]
+#define FRD FPR[insn.ftype.rd]
+#define BIGIMM insn.ltype.bigimm
+#define SIMM insn.itype.imm12
+#define BIMM ((signed)insn.btype.immlo | (insn.btype.immhi << IMMLO_BITS))
+#define SHAMT (insn.itype.imm12 & 0x3F)
+#define SHAMTW (insn.itype.imm12 & 0x1F)
+#define TARGET insn.jtype.target
+#define BRANCH_TARGET (pc + (BIMM << BRANCH_ALIGN_BITS))
+#define JUMP_TARGET (pc + (TARGET << JUMP_ALIGN_BITS))
+#define RM ({ int rm = insn.ftype.rm; \
+              if(rm == 7) rm = (fsr & FSR_RD) >> FSR_RD_SHIFT; \
+              if(rm > 4) throw_illegal_instruction; \
+              rm; })
+
+#define require_supervisor if(unlikely(!(sr & SR_S))) throw trap_privileged_instruction
+#define xpr64 (xprlen == 64)
+#define require_xpr64 if(unlikely(!xpr64)) throw_illegal_instruction
+#define require_xpr32 if(unlikely(xpr64)) throw_illegal_instruction
+#define require_fp if(unlikely(!(sr & SR_EF))) throw trap_fp_disabled
+#define require_vector \
+  ({ if(!(sr & SR_EV)) throw trap_vector_disabled; \
+    else if (!utmode && (vecbanks_count < 3)) throw trap_vector_bank; \
+  })
+#define cmp_trunc(reg) (reg_t(reg) << (64-xprlen))
+#define set_fp_exceptions ({ set_fsr(fsr | \
+                               (softfloat_exceptionFlags << FSR_AEXC_SHIFT)); \
+                             softfloat_exceptionFlags = 0; })
+
+#define sext32(x) ((sreg_t)(int32_t)(x))
+#define zext32(x) ((reg_t)(uint32_t)(x))
+#define sext_xprlen(x) ((sreg_t(x) << (64-xprlen)) >> (64-xprlen))
+#define zext_xprlen(x) ((reg_t(x) << (64-xprlen)) >> (64-xprlen))
+
+#ifndef RISCV_ENABLE_RVC
+# define set_pc(x) \
+  do { if((x) & (sizeof(insn_t)-1)) \
+       { badvaddr = (x); throw trap_instruction_address_misaligned; } \
+       npc = (x); \
+     } while(0)
+#else
+# define set_pc(x) \
+  do { if((x) & ((sr & SR_EC) ? 1 : 3)) \
+       { badvaddr = (x); throw trap_instruction_address_misaligned; } \
+       npc = (x); \
+     } while(0)
+#endif
+
+// RVC stuff
+
+#define INSN_IS_RVC(x) (((x) & 0x3) < 0x3)
+#define insn_length(x) (INSN_IS_RVC(x) ? 2 : 4)
+#define require_rvc if(!(sr & SR_EC)) throw_illegal_instruction
+
+#define CRD_REGNUM ((insn.bits >> 5) & 0x1f)
+#define CRD do_writeback(XPR, CRD_REGNUM)
+#define CRS1 XPR[(insn.bits >> 10) & 0x1f]
+#define CRS2 XPR[(insn.bits >> 5) & 0x1f]
+#define CIMM6 ((int32_t)((insn.bits >> 10) & 0x3f) << 26 >> 26)
+#define CIMM5U ((insn.bits >> 5) & 0x1f)
+#define CIMM5 ((int32_t)CIMM5U << 27 >> 27)
+#define CIMM10 ((int32_t)((insn.bits >> 5) & 0x3ff) << 22 >> 22)
+#define CBRANCH_TARGET (pc + (CIMM5 << BRANCH_ALIGN_BITS))
+#define CJUMP_TARGET (pc + (CIMM10 << JUMP_ALIGN_BITS))
+
+static const int rvc_rs1_regmap[8] = { 20, 21, 2, 3, 4, 5, 6, 7 };
+#define rvc_rd_regmap rvc_rs1_regmap
+#define rvc_rs2b_regmap rvc_rs1_regmap
+static const int rvc_rs2_regmap[8] = { 20, 21, 2, 3, 4, 5, 6, 0 };
+#define CRDS XPR[rvc_rd_regmap[(insn.bits >> 13) & 0x7]]
+#define FCRDS FPR[rvc_rd_regmap[(insn.bits >> 13) & 0x7]]
+#define CRS1S XPR[rvc_rs1_regmap[(insn.bits >> 10) & 0x7]]
+#define CRS2S XPR[rvc_rs2_regmap[(insn.bits >> 13) & 0x7]]
+#define CRS2BS XPR[rvc_rs2b_regmap[(insn.bits >> 5) & 0x7]]
+#define FCRS2S FPR[rvc_rs2_regmap[(insn.bits >> 13) & 0x7]]
+
+// vector stuff
+#define VL vl
+
+#define UT_RS1(idx) uts[idx]->XPR[insn.rtype.rs1]
+#define UT_RS2(idx) uts[idx]->XPR[insn.rtype.rs2]
+#define UT_RD(idx) do_writeback(uts[idx]->XPR,insn.rtype.rd)
+#define UT_RA(idx) do_writeback(uts[idx]->XPR,1)
+#define UT_FRS1(idx) uts[idx]->FPR[insn.ftype.rs1]
+#define UT_FRS2(idx) uts[idx]->FPR[insn.ftype.rs2]
+#define UT_FRS3(idx) uts[idx]->FPR[insn.ftype.rs3]
+#define UT_FRD(idx) uts[idx]->FPR[insn.ftype.rd]
+#define UT_RM(idx) ((insn.ftype.rm != 7) ? insn.ftype.rm : \
+              ((uts[idx]->fsr & FSR_RD) >> FSR_RD_SHIFT))
+
+#define UT_LOOP_START for (int i=0;i<VL; i++) {
+#define UT_LOOP_END }
+#define UT_LOOP_RS1 UT_RS1(i)
+#define UT_LOOP_RS2 UT_RS2(i)
+#define UT_LOOP_RD UT_RD(i)
+#define UT_LOOP_RA UT_RA(i)
+#define UT_LOOP_FRS1 UT_FRS1(i)
+#define UT_LOOP_FRS2 UT_FRS2(i)
+#define UT_LOOP_FRS3 UT_FRS3(i)
+#define UT_LOOP_FRD UT_FRD(i)
+#define UT_LOOP_RM UT_RM(i)
+
+#define VEC_LOAD(dst, func, inc) \
+  reg_t addr = RS1; \
+  UT_LOOP_START \
+    UT_LOOP_##dst = mmu.func(addr); \
+    addr += inc; \
+  UT_LOOP_END
+
+#define VEC_STORE(src, func, inc) \
+  reg_t addr = RS1; \
+  UT_LOOP_START \
+    mmu.func(addr, UT_LOOP_##src); \
+    addr += inc; \
+  UT_LOOP_END
+
+enum vt_command_t
+{
+  vt_command_stop,
+};
+
+#endif
diff --git a/riscv/dispatch b/riscv/dispatch
new file mode 100755
index 0000000..b96b364
--- /dev/null
+++ b/riscv/dispatch
@@ -0,0 +1,77 @@
+#!/usr/bin/python
+import sys
+
+if len(sys.argv) == 3:
+  numfiles = int(sys.argv[1])
+  tablesz = int(sys.argv[2])
+  filenum = numfiles+1
+else:
+  filenum = int(sys.argv[1])
+  numfiles = int(sys.argv[2])
+  tablesz = int(sys.argv[3])
+
+match = {}
+mask = {}
+seen = {}
+for line in sys.stdin:
+  (name, mtch, msk) = line.split('(')[1].split(')')[0].split(',')
+  match[name] = int(mtch,16)
+  mask[name] = int(msk,16)
+
+redundant = {}
+for name in match.iterkeys():
+  if (mask[name] & (tablesz-1)) == mask[name]:
+    for i in range(match[name]+1, tablesz):
+      if (i & mask[name]) == match[name]:
+        redundant[i] = match[name]
+
+illegal = -1
+for i in range(0, tablesz):
+  used = 0
+  for name in match.iterkeys():
+    if match[name] % tablesz == (i & mask[name]):
+      used = 1
+  if not used and illegal == -1:
+    illegal = i
+  elif not used:
+    redundant[i] = illegal
+
+if filenum == numfiles:
+  print '#include "processor.h"'
+  print 'const insn_func_t processor_t::dispatch_table[DISPATCH_TABLE_SIZE] = {'
+  for i in range(0, tablesz):
+    func = i
+    if i in redundant:
+      func = redundant[i]
+    print '  &processor_t::insn_func_%d,' % func
+  print '};'
+
+if filenum == numfiles+1:
+  print 'static const size_t DISPATCH_TABLE_SIZE = %d;' % tablesz
+  print 'static const insn_func_t dispatch_table[DISPATCH_TABLE_SIZE];'
+  for i in range(0, tablesz):
+    if i not in redundant:
+      print 'reg_t insn_func_%d(insn_t insn, reg_t reg);' % i
+  sys.exit(0)
+
+print '#include "insn_header.h"'
+
+for i in range(0, tablesz):
+  if i % numfiles != filenum or i in redundant:
+    continue
+
+  print 'reg_t processor_t::insn_func_%d(insn_t insn, reg_t pc)' % i
+  print '{'
+  for name in match.iterkeys():
+    if match[name] % tablesz == (i & mask[name]):
+      print '  if((insn.bits & 0x%x) == 0x%x)' % (mask[name] & ~(tablesz-1), \
+                                                  match[name] & ~(tablesz-1))
+      print '  {'
+      print '    reg_t npc = pc + insn_length(0x%x);' % match[name]
+      print '    #include "insns/%s.h"' % name
+      print '    return npc;'
+      print '  }'
+      print '  else',
+
+  print '  throw trap_illegal_instruction;'
+  print '}\n'
diff --git a/riscv/dispatch.h b/riscv/dispatch.h
new file mode 100644
index 0000000..7091899
--- /dev/null
+++ b/riscv/dispatch.h
@@ -0,0 +1,254 @@
+static const size_t DISPATCH_TABLE_SIZE = 1024;
+static const insn_func_t dispatch_table[DISPATCH_TABLE_SIZE];
+reg_t insn_func_0(insn_t insn, reg_t reg);
+reg_t insn_func_1(insn_t insn, reg_t reg);
+reg_t insn_func_2(insn_t insn, reg_t reg);
+reg_t insn_func_3(insn_t insn, reg_t reg);
+reg_t insn_func_4(insn_t insn, reg_t reg);
+reg_t insn_func_5(insn_t insn, reg_t reg);
+reg_t insn_func_6(insn_t insn, reg_t reg);
+reg_t insn_func_7(insn_t insn, reg_t reg);
+reg_t insn_func_8(insn_t insn, reg_t reg);
+reg_t insn_func_9(insn_t insn, reg_t reg);
+reg_t insn_func_10(insn_t insn, reg_t reg);
+reg_t insn_func_11(insn_t insn, reg_t reg);
+reg_t insn_func_12(insn_t insn, reg_t reg);
+reg_t insn_func_13(insn_t insn, reg_t reg);
+reg_t insn_func_15(insn_t insn, reg_t reg);
+reg_t insn_func_16(insn_t insn, reg_t reg);
+reg_t insn_func_17(insn_t insn, reg_t reg);
+reg_t insn_func_18(insn_t insn, reg_t reg);
+reg_t insn_func_19(insn_t insn, reg_t reg);
+reg_t insn_func_20(insn_t insn, reg_t reg);
+reg_t insn_func_21(insn_t insn, reg_t reg);
+reg_t insn_func_22(insn_t insn, reg_t reg);
+reg_t insn_func_24(insn_t insn, reg_t reg);
+reg_t insn_func_25(insn_t insn, reg_t reg);
+reg_t insn_func_26(insn_t insn, reg_t reg);
+reg_t insn_func_27(insn_t insn, reg_t reg);
+reg_t insn_func_28(insn_t insn, reg_t reg);
+reg_t insn_func_29(insn_t insn, reg_t reg);
+reg_t insn_func_34(insn_t insn, reg_t reg);
+reg_t insn_func_35(insn_t insn, reg_t reg);
+reg_t insn_func_50(insn_t insn, reg_t reg);
+reg_t insn_func_51(insn_t insn, reg_t reg);
+reg_t insn_func_55(insn_t insn, reg_t reg);
+reg_t insn_func_57(insn_t insn, reg_t reg);
+reg_t insn_func_58(insn_t insn, reg_t reg);
+reg_t insn_func_59(insn_t insn, reg_t reg);
+reg_t insn_func_66(insn_t insn, reg_t reg);
+reg_t insn_func_67(insn_t insn, reg_t reg);
+reg_t insn_func_71(insn_t insn, reg_t reg);
+reg_t insn_func_75(insn_t insn, reg_t reg);
+reg_t insn_func_79(insn_t insn, reg_t reg);
+reg_t insn_func_82(insn_t insn, reg_t reg);
+reg_t insn_func_83(insn_t insn, reg_t reg);
+reg_t insn_func_89(insn_t insn, reg_t reg);
+reg_t insn_func_90(insn_t insn, reg_t reg);
+reg_t insn_func_98(insn_t insn, reg_t reg);
+reg_t insn_func_99(insn_t insn, reg_t reg);
+reg_t insn_func_103(insn_t insn, reg_t reg);
+reg_t insn_func_107(insn_t insn, reg_t reg);
+reg_t insn_func_111(insn_t insn, reg_t reg);
+reg_t insn_func_114(insn_t insn, reg_t reg);
+reg_t insn_func_115(insn_t insn, reg_t reg);
+reg_t insn_func_119(insn_t insn, reg_t reg);
+reg_t insn_func_121(insn_t insn, reg_t reg);
+reg_t insn_func_122(insn_t insn, reg_t reg);
+reg_t insn_func_123(insn_t insn, reg_t reg);
+reg_t insn_func_130(insn_t insn, reg_t reg);
+reg_t insn_func_131(insn_t insn, reg_t reg);
+reg_t insn_func_139(insn_t insn, reg_t reg);
+reg_t insn_func_143(insn_t insn, reg_t reg);
+reg_t insn_func_146(insn_t insn, reg_t reg);
+reg_t insn_func_147(insn_t insn, reg_t reg);
+reg_t insn_func_153(insn_t insn, reg_t reg);
+reg_t insn_func_154(insn_t insn, reg_t reg);
+reg_t insn_func_155(insn_t insn, reg_t reg);
+reg_t insn_func_162(insn_t insn, reg_t reg);
+reg_t insn_func_163(insn_t insn, reg_t reg);
+reg_t insn_func_175(insn_t insn, reg_t reg);
+reg_t insn_func_178(insn_t insn, reg_t reg);
+reg_t insn_func_179(insn_t insn, reg_t reg);
+reg_t insn_func_185(insn_t insn, reg_t reg);
+reg_t insn_func_186(insn_t insn, reg_t reg);
+reg_t insn_func_187(insn_t insn, reg_t reg);
+reg_t insn_func_194(insn_t insn, reg_t reg);
+reg_t insn_func_195(insn_t insn, reg_t reg);
+reg_t insn_func_199(insn_t insn, reg_t reg);
+reg_t insn_func_203(insn_t insn, reg_t reg);
+reg_t insn_func_207(insn_t insn, reg_t reg);
+reg_t insn_func_210(insn_t insn, reg_t reg);
+reg_t insn_func_211(insn_t insn, reg_t reg);
+reg_t insn_func_217(insn_t insn, reg_t reg);
+reg_t insn_func_218(insn_t insn, reg_t reg);
+reg_t insn_func_226(insn_t insn, reg_t reg);
+reg_t insn_func_227(insn_t insn, reg_t reg);
+reg_t insn_func_235(insn_t insn, reg_t reg);
+reg_t insn_func_242(insn_t insn, reg_t reg);
+reg_t insn_func_243(insn_t insn, reg_t reg);
+reg_t insn_func_247(insn_t insn, reg_t reg);
+reg_t insn_func_249(insn_t insn, reg_t reg);
+reg_t insn_func_250(insn_t insn, reg_t reg);
+reg_t insn_func_251(insn_t insn, reg_t reg);
+reg_t insn_func_258(insn_t insn, reg_t reg);
+reg_t insn_func_259(insn_t insn, reg_t reg);
+reg_t insn_func_263(insn_t insn, reg_t reg);
+reg_t insn_func_267(insn_t insn, reg_t reg);
+reg_t insn_func_271(insn_t insn, reg_t reg);
+reg_t insn_func_274(insn_t insn, reg_t reg);
+reg_t insn_func_275(insn_t insn, reg_t reg);
+reg_t insn_func_281(insn_t insn, reg_t reg);
+reg_t insn_func_282(insn_t insn, reg_t reg);
+reg_t insn_func_284(insn_t insn, reg_t reg);
+reg_t insn_func_290(insn_t insn, reg_t reg);
+reg_t insn_func_291(insn_t insn, reg_t reg);
+reg_t insn_func_295(insn_t insn, reg_t reg);
+reg_t insn_func_299(insn_t insn, reg_t reg);
+reg_t insn_func_303(insn_t insn, reg_t reg);
+reg_t insn_func_306(insn_t insn, reg_t reg);
+reg_t insn_func_307(insn_t insn, reg_t reg);
+reg_t insn_func_313(insn_t insn, reg_t reg);
+reg_t insn_func_314(insn_t insn, reg_t reg);
+reg_t insn_func_322(insn_t insn, reg_t reg);
+reg_t insn_func_338(insn_t insn, reg_t reg);
+reg_t insn_func_345(insn_t insn, reg_t reg);
+reg_t insn_func_346(insn_t insn, reg_t reg);
+reg_t insn_func_354(insn_t insn, reg_t reg);
+reg_t insn_func_363(insn_t insn, reg_t reg);
+reg_t insn_func_370(insn_t insn, reg_t reg);
+reg_t insn_func_371(insn_t insn, reg_t reg);
+reg_t insn_func_375(insn_t insn, reg_t reg);
+reg_t insn_func_377(insn_t insn, reg_t reg);
+reg_t insn_func_378(insn_t insn, reg_t reg);
+reg_t insn_func_379(insn_t insn, reg_t reg);
+reg_t insn_func_386(insn_t insn, reg_t reg);
+reg_t insn_func_387(insn_t insn, reg_t reg);
+reg_t insn_func_391(insn_t insn, reg_t reg);
+reg_t insn_func_395(insn_t insn, reg_t reg);
+reg_t insn_func_399(insn_t insn, reg_t reg);
+reg_t insn_func_402(insn_t insn, reg_t reg);
+reg_t insn_func_403(insn_t insn, reg_t reg);
+reg_t insn_func_409(insn_t insn, reg_t reg);
+reg_t insn_func_410(insn_t insn, reg_t reg);
+reg_t insn_func_418(insn_t insn, reg_t reg);
+reg_t insn_func_419(insn_t insn, reg_t reg);
+reg_t insn_func_423(insn_t insn, reg_t reg);
+reg_t insn_func_427(insn_t insn, reg_t reg);
+reg_t insn_func_434(insn_t insn, reg_t reg);
+reg_t insn_func_435(insn_t insn, reg_t reg);
+reg_t insn_func_441(insn_t insn, reg_t reg);
+reg_t insn_func_442(insn_t insn, reg_t reg);
+reg_t insn_func_450(insn_t insn, reg_t reg);
+reg_t insn_func_466(insn_t insn, reg_t reg);
+reg_t insn_func_473(insn_t insn, reg_t reg);
+reg_t insn_func_474(insn_t insn, reg_t reg);
+reg_t insn_func_482(insn_t insn, reg_t reg);
+reg_t insn_func_498(insn_t insn, reg_t reg);
+reg_t insn_func_499(insn_t insn, reg_t reg);
+reg_t insn_func_503(insn_t insn, reg_t reg);
+reg_t insn_func_505(insn_t insn, reg_t reg);
+reg_t insn_func_506(insn_t insn, reg_t reg);
+reg_t insn_func_507(insn_t insn, reg_t reg);
+reg_t insn_func_514(insn_t insn, reg_t reg);
+reg_t insn_func_515(insn_t insn, reg_t reg);
+reg_t insn_func_523(insn_t insn, reg_t reg);
+reg_t insn_func_530(insn_t insn, reg_t reg);
+reg_t insn_func_531(insn_t insn, reg_t reg);
+reg_t insn_func_537(insn_t insn, reg_t reg);
+reg_t insn_func_538(insn_t insn, reg_t reg);
+reg_t insn_func_540(insn_t insn, reg_t reg);
+reg_t insn_func_546(insn_t insn, reg_t reg);
+reg_t insn_func_559(insn_t insn, reg_t reg);
+reg_t insn_func_562(insn_t insn, reg_t reg);
+reg_t insn_func_563(insn_t insn, reg_t reg);
+reg_t insn_func_569(insn_t insn, reg_t reg);
+reg_t insn_func_570(insn_t insn, reg_t reg);
+reg_t insn_func_571(insn_t insn, reg_t reg);
+reg_t insn_func_578(insn_t insn, reg_t reg);
+reg_t insn_func_594(insn_t insn, reg_t reg);
+reg_t insn_func_595(insn_t insn, reg_t reg);
+reg_t insn_func_601(insn_t insn, reg_t reg);
+reg_t insn_func_602(insn_t insn, reg_t reg);
+reg_t insn_func_610(insn_t insn, reg_t reg);
+reg_t insn_func_611(insn_t insn, reg_t reg);
+reg_t insn_func_619(insn_t insn, reg_t reg);
+reg_t insn_func_626(insn_t insn, reg_t reg);
+reg_t insn_func_631(insn_t insn, reg_t reg);
+reg_t insn_func_633(insn_t insn, reg_t reg);
+reg_t insn_func_634(insn_t insn, reg_t reg);
+reg_t insn_func_635(insn_t insn, reg_t reg);
+reg_t insn_func_642(insn_t insn, reg_t reg);
+reg_t insn_func_643(insn_t insn, reg_t reg);
+reg_t insn_func_651(insn_t insn, reg_t reg);
+reg_t insn_func_658(insn_t insn, reg_t reg);
+reg_t insn_func_659(insn_t insn, reg_t reg);
+reg_t insn_func_665(insn_t insn, reg_t reg);
+reg_t insn_func_666(insn_t insn, reg_t reg);
+reg_t insn_func_667(insn_t insn, reg_t reg);
+reg_t insn_func_674(insn_t insn, reg_t reg);
+reg_t insn_func_687(insn_t insn, reg_t reg);
+reg_t insn_func_690(insn_t insn, reg_t reg);
+reg_t insn_func_691(insn_t insn, reg_t reg);
+reg_t insn_func_697(insn_t insn, reg_t reg);
+reg_t insn_func_698(insn_t insn, reg_t reg);
+reg_t insn_func_699(insn_t insn, reg_t reg);
+reg_t insn_func_706(insn_t insn, reg_t reg);
+reg_t insn_func_722(insn_t insn, reg_t reg);
+reg_t insn_func_723(insn_t insn, reg_t reg);
+reg_t insn_func_729(insn_t insn, reg_t reg);
+reg_t insn_func_730(insn_t insn, reg_t reg);
+reg_t insn_func_738(insn_t insn, reg_t reg);
+reg_t insn_func_739(insn_t insn, reg_t reg);
+reg_t insn_func_754(insn_t insn, reg_t reg);
+reg_t insn_func_755(insn_t insn, reg_t reg);
+reg_t insn_func_759(insn_t insn, reg_t reg);
+reg_t insn_func_761(insn_t insn, reg_t reg);
+reg_t insn_func_762(insn_t insn, reg_t reg);
+reg_t insn_func_763(insn_t insn, reg_t reg);
+reg_t insn_func_770(insn_t insn, reg_t reg);
+reg_t insn_func_771(insn_t insn, reg_t reg);
+reg_t insn_func_779(insn_t insn, reg_t reg);
+reg_t insn_func_786(insn_t insn, reg_t reg);
+reg_t insn_func_787(insn_t insn, reg_t reg);
+reg_t insn_func_793(insn_t insn, reg_t reg);
+reg_t insn_func_794(insn_t insn, reg_t reg);
+reg_t insn_func_796(insn_t insn, reg_t reg);
+reg_t insn_func_802(insn_t insn, reg_t reg);
+reg_t insn_func_815(insn_t insn, reg_t reg);
+reg_t insn_func_818(insn_t insn, reg_t reg);
+reg_t insn_func_819(insn_t insn, reg_t reg);
+reg_t insn_func_825(insn_t insn, reg_t reg);
+reg_t insn_func_826(insn_t insn, reg_t reg);
+reg_t insn_func_827(insn_t insn, reg_t reg);
+reg_t insn_func_834(insn_t insn, reg_t reg);
+reg_t insn_func_850(insn_t insn, reg_t reg);
+reg_t insn_func_857(insn_t insn, reg_t reg);
+reg_t insn_func_858(insn_t insn, reg_t reg);
+reg_t insn_func_866(insn_t insn, reg_t reg);
+reg_t insn_func_867(insn_t insn, reg_t reg);
+reg_t insn_func_882(insn_t insn, reg_t reg);
+reg_t insn_func_889(insn_t insn, reg_t reg);
+reg_t insn_func_890(insn_t insn, reg_t reg);
+reg_t insn_func_898(insn_t insn, reg_t reg);
+reg_t insn_func_914(insn_t insn, reg_t reg);
+reg_t insn_func_915(insn_t insn, reg_t reg);
+reg_t insn_func_921(insn_t insn, reg_t reg);
+reg_t insn_func_922(insn_t insn, reg_t reg);
+reg_t insn_func_930(insn_t insn, reg_t reg);
+reg_t insn_func_943(insn_t insn, reg_t reg);
+reg_t insn_func_946(insn_t insn, reg_t reg);
+reg_t insn_func_947(insn_t insn, reg_t reg);
+reg_t insn_func_953(insn_t insn, reg_t reg);
+reg_t insn_func_954(insn_t insn, reg_t reg);
+reg_t insn_func_955(insn_t insn, reg_t reg);
+reg_t insn_func_962(insn_t insn, reg_t reg);
+reg_t insn_func_978(insn_t insn, reg_t reg);
+reg_t insn_func_985(insn_t insn, reg_t reg);
+reg_t insn_func_986(insn_t insn, reg_t reg);
+reg_t insn_func_994(insn_t insn, reg_t reg);
+reg_t insn_func_995(insn_t insn, reg_t reg);
+reg_t insn_func_1010(insn_t insn, reg_t reg);
+reg_t insn_func_1011(insn_t insn, reg_t reg);
+reg_t insn_func_1017(insn_t insn, reg_t reg);
+reg_t insn_func_1018(insn_t insn, reg_t reg);
diff --git a/riscv/htif.cc b/riscv/htif.cc
new file mode 100644
index 0000000..02809d0
--- /dev/null
+++ b/riscv/htif.cc
@@ -0,0 +1,143 @@
+#include "htif.h"
+#include "common.h"
+#include "sim.h"
+#include <unistd.h>
+#include <stdexcept>
+#include <stdlib.h>
+#include <errno.h>
+#include <assert.h>
+
+enum
+{
+  APP_CMD_READ_MEM,
+  APP_CMD_WRITE_MEM,
+  APP_CMD_READ_CONTROL_REG,
+  APP_CMD_WRITE_CONTROL_REG,
+  APP_CMD_START,
+  APP_CMD_STOP,
+  APP_CMD_ACK,
+  APP_CMD_NACK
+};
+
+#define APP_DATA_ALIGN 8
+#define APP_MAX_DATA_SIZE 1024
+struct packet
+{
+  uint16_t cmd;
+  uint16_t seqno;
+  uint32_t data_size;
+  uint64_t addr;
+  uint8_t  data[APP_MAX_DATA_SIZE];
+};
+
+htif_t::htif_t(int _tohost_fd, int _fromhost_fd)
+  : sim(NULL), tohost_fd(_tohost_fd), fromhost_fd(_fromhost_fd), seqno(1)
+{
+}
+
+htif_t::~htif_t()
+{
+  close(tohost_fd);
+  close(fromhost_fd);
+}
+
+void htif_t::init(sim_t* _sim)
+{
+  sim = _sim;
+}
+
+void htif_t::wait_for_start()
+{
+  while(wait_for_packet() != APP_CMD_START);
+}
+
+void htif_t::wait_for_fromhost_write()
+{
+  while(wait_for_packet() != APP_CMD_WRITE_CONTROL_REG);
+}
+
+void htif_t::send_packet(packet* p)
+{
+  int bytes = write(tohost_fd,p,offsetof(packet,data)+p->data_size);
+  if((size_t)bytes != offsetof(packet,data) + p->data_size)
+  {
+    const char* error = bytes == -1 ? strerror(errno) : "not all bytes sent";
+    fprintf(stderr,"HTIF error: %s\n", error);
+    exit(-1);
+  }
+}
+
+void htif_t::nack(uint16_t nack_seqno)
+{
+  packet p = {APP_CMD_NACK,nack_seqno,0,0};
+  send_packet(&p);
+}
+
+int htif_t::wait_for_packet()
+{
+  while(1)
+  {
+    packet p;
+    int bytes = read(fromhost_fd,&p,sizeof(p));
+    if(bytes < (int)offsetof(packet,data))
+    {
+      const char* error = bytes == -1 ? strerror(errno) : "too few bytes read";
+      fprintf(stderr,"HTIF error: %s\n", error);
+      exit(-1);
+    }
+  
+    if(p.seqno != seqno)
+    {
+      nack(p.seqno);
+      continue;
+    }
+
+    packet ackpacket = {APP_CMD_ACK,seqno,0,0};
+
+    switch(p.cmd)
+    {
+      case APP_CMD_START:
+        break;
+      case APP_CMD_STOP:
+        sim->stop();
+        break;
+      case APP_CMD_READ_MEM:
+        assert(p.addr % APP_DATA_ALIGN == 0);
+        assert(p.data_size % APP_DATA_ALIGN == 0);
+        assert(p.data_size <= APP_MAX_DATA_SIZE);
+        assert(p.addr <= sim->memsz && p.addr+p.data_size <= sim->memsz);
+        ackpacket.data_size = p.data_size;
+
+        static_assert(APP_DATA_ALIGN >= sizeof(uint64_t))
+        for(size_t i = 0; i < p.data_size/8; i++)
+          ((uint64_t*)ackpacket.data)[i] = sim->mmu->load_uint64(p.addr+i*8);
+        break;
+      case APP_CMD_WRITE_MEM:
+        assert(p.addr % APP_DATA_ALIGN == 0);
+        assert(p.data_size % APP_DATA_ALIGN == 0);
+        assert(p.data_size <= bytes - offsetof(packet,data));
+        assert(p.addr <= sim->memsz && p.addr+p.data_size <= sim->memsz);
+
+        for(size_t i = 0; i < p.data_size/8; i++)
+          sim->mmu->store_uint64(p.addr+i*8, ((uint64_t*)p.data)[i]);
+        break;
+      case APP_CMD_READ_CONTROL_REG:
+        assert(p.addr == 16);
+        assert(p.data_size == sizeof(reg_t));
+        ackpacket.data_size = sizeof(reg_t);
+        memcpy(ackpacket.data,&sim->tohost,sizeof(reg_t));
+        break;
+      case APP_CMD_WRITE_CONTROL_REG:
+        assert(p.addr == 17);
+        assert(p.data_size == sizeof(reg_t));
+        sim->tohost = 0;
+        memcpy(&sim->fromhost,p.data,sizeof(reg_t));
+        break;
+    }
+
+    send_packet(&ackpacket);
+    seqno++;
+    return p.cmd;
+  }
+}
+
diff --git a/riscv/htif.h b/riscv/htif.h
new file mode 100644
index 0000000..0106695
--- /dev/null
+++ b/riscv/htif.h
@@ -0,0 +1,35 @@
+#ifndef _HTIF_H
+#define _HTIF_H
+
+#include <stdint.h>
+
+class sim_t;
+struct packet;
+
+// this class implements the host-target interface for program loading, etc.
+class htif_t
+{
+public:
+  htif_t(int _tohost_fd, int _fromhost_fd);
+  ~htif_t();
+  void init(sim_t* _sim);
+
+  // wait for host to send start command
+  void wait_for_start();
+
+  // we block on the host if the target machine reads the fromhost register,
+  // which provides determinism in tohost/fromhost communication.
+  void wait_for_fromhost_write();
+
+private:
+  sim_t* sim;
+  int tohost_fd;
+  int fromhost_fd;
+  uint16_t seqno;
+
+  void nack(uint16_t seqno);
+  void send_packet(packet* p);
+  int wait_for_packet();
+};
+
+#endif
diff --git a/riscv/icsim.cc b/riscv/icsim.cc
new file mode 100644
index 0000000..308e7ed
--- /dev/null
+++ b/riscv/icsim.cc
@@ -0,0 +1,100 @@
+#include "icsim.h"
+#include <stdexcept>
+#include <iostream>
+#include <iomanip>
+
+icsim_t::icsim_t(size_t _sets, size_t _ways, size_t _linesz, const char* _name)
+ : sets(_sets), ways(_ways), linesz(_linesz), idx_mask(_sets-1), name(_name)
+{
+  if(sets == 0 || (sets & (sets-1)))
+    throw std::logic_error("sets not a power of 2");
+  if(linesz == 0 || (linesz & (linesz-1)))
+    throw std::logic_error("linesz not a power of 2");
+
+  idx_shift = 0;
+  while(_linesz >>= 1)
+    idx_shift++;
+
+  tags = new uint64_t[sets*ways];
+  memset(tags, 0, sets*ways*sizeof(uint64_t));
+
+  read_accesses = 0;
+  read_misses = 0;
+  bytes_read = 0;
+  write_accesses = 0;
+  write_misses = 0;
+  bytes_written = 0;
+  writebacks = 0;
+}
+
+icsim_t::icsim_t(const icsim_t& rhs)
+ : sets(rhs.sets), ways(rhs.ways), linesz(rhs.linesz),
+   idx_shift(rhs.idx_shift), idx_mask(rhs.idx_mask), name(rhs.name)
+{
+  tags = new uint64_t[sets*ways];
+  memcpy(tags, rhs.tags, sets*ways*sizeof(uint64_t));
+}
+
+icsim_t::~icsim_t()
+{
+  delete [] tags;
+}
+
+void icsim_t::print_stats()
+{
+  if(read_accesses + write_accesses == 0)
+    return;
+
+  float mr = 100.0f*(read_misses+write_misses)/(read_accesses+write_accesses);
+
+  std::cout << std::setprecision(3) << std::fixed;
+  std::cout << name << " ";
+  std::cout << "Bytes Read:            " << bytes_read << std::endl;
+  std::cout << name << " ";
+  std::cout << "Bytes Written:         " << bytes_written << std::endl;
+  std::cout << name << " ";
+  std::cout << "Read Accesses:         " << read_accesses << std::endl;
+  std::cout << name << " ";
+  std::cout << "Write Accesses:        " << write_accesses << std::endl;
+  std::cout << name << " ";
+  std::cout << "Read Misses:           " << read_misses << std::endl;
+  std::cout << name << " ";
+  std::cout << "Write Misses:          " << write_misses << std::endl;
+  std::cout << name << " ";
+  std::cout << "Writebacks:            " << writebacks << std::endl;
+  std::cout << name << " ";
+  std::cout << "Miss Rate:             " << mr << '%' << std::endl;
+
+  float cr = read_accesses == 0 ? 0.0f : 100.0f*bytes_read/(4*read_accesses);
+  if(name == "I$")
+  {
+    std::cout << name << " ";
+    std::cout << "RVC compression ratio: " << cr << '%' << std::endl;
+  }
+}
+
+void icsim_t::tick(uint64_t pc, int insnlen, bool store)
+{
+  store ? write_accesses++ : read_accesses++;
+  (store ? bytes_written : bytes_read) += insnlen;
+
+  size_t idx = (pc >> idx_shift) & idx_mask;
+  size_t tag = (pc >> idx_shift) | VALID;
+
+  for(size_t i = 0; i < ways; i++)
+  {
+    if(tag == (tags[idx + i*sets] & ~DIRTY)) // hit
+    {
+      if(store)
+        tags[idx + i*sets] |= DIRTY;
+      return;
+    }
+  }
+
+  store ? write_misses++ : read_misses++;
+
+  size_t way = lfsr.next() % ways;
+  if((tags[idx + way*sets] & (VALID | DIRTY)) == (VALID | DIRTY))
+    writebacks++;
+  tags[idx + way*sets] = tag;
+}
diff --git a/riscv/icsim.h b/riscv/icsim.h
new file mode 100644
index 0000000..ec6eae4
--- /dev/null
+++ b/riscv/icsim.h
@@ -0,0 +1,55 @@
+#ifndef _RISCV_ICSIM_H
+#define _RISCV_ICSIM_H
+
+// this file models a simple cache to estimate hit/miss rates.
+// it is currently unused.
+
+#include <cstring>
+#include <string>
+#include <stdint.h>
+
+class lfsr_t
+{
+public:
+  lfsr_t() : reg(1) {}
+  lfsr_t(const lfsr_t& lfsr) : reg(lfsr.reg) {}
+  uint32_t next() { return reg = (reg>>1)^(-(reg&1) & 0xd0000001); }
+private:
+  uint32_t reg;
+};
+
+class icsim_t
+{
+public:
+  icsim_t(size_t sets, size_t ways, size_t linesz, const char* name);
+  icsim_t(const icsim_t& rhs);
+  ~icsim_t();
+
+  void tick(uint64_t pc, int insnlen, bool store);
+  void print_stats();
+private:
+  lfsr_t lfsr;
+
+  size_t sets;
+  size_t ways;
+  size_t linesz;
+  size_t idx_shift;
+  size_t idx_mask;
+
+  uint64_t* tags;
+  
+  uint64_t read_accesses;
+  uint64_t read_misses;
+  uint64_t bytes_read;
+  uint64_t write_accesses;
+  uint64_t write_misses;
+  uint64_t bytes_written;
+  uint64_t writebacks;
+
+  std::string name;
+
+  static const uint64_t VALID = 1ULL << 63;
+  static const uint64_t DIRTY = 1ULL << 62;
+};
+
+#endif
diff --git a/riscv/insn_header.h b/riscv/insn_header.h
new file mode 100644
index 0000000..9ea3586
--- /dev/null
+++ b/riscv/insn_header.h
@@ -0,0 +1,7 @@
+#include "processor.h"
+#include "config.h"
+#include "sim.h"
+#include "softfloat.h"
+#include "platform.h" // softfloat isNaNF32UI, etc.
+#include "internals.h" // ditto
+#include <assert.h>
diff --git a/riscv/insns/add.h b/riscv/insns/add.h
new file mode 100644
index 0000000..34d49ff
--- /dev/null
+++ b/riscv/insns/add.h
@@ -0,0 +1 @@
+RD = sext_xprlen(RS1 + RS2);
diff --git a/riscv/insns/addi.h b/riscv/insns/addi.h
new file mode 100644
index 0000000..88881e5
--- /dev/null
+++ b/riscv/insns/addi.h
@@ -0,0 +1 @@
+RD = sext_xprlen(RS1 + SIMM);
diff --git a/riscv/insns/addiw.h b/riscv/insns/addiw.h
new file mode 100644
index 0000000..23ae278
--- /dev/null
+++ b/riscv/insns/addiw.h
@@ -0,0 +1,2 @@
+require_xpr64;
+RD = sext32(SIMM + RS1);
diff --git a/riscv/insns/addw.h b/riscv/insns/addw.h
new file mode 100644
index 0000000..4e2ed56
--- /dev/null
+++ b/riscv/insns/addw.h
@@ -0,0 +1,2 @@
+require_xpr64;
+RD = sext32(RS1 + RS2);
diff --git a/riscv/insns/amoadd_d.h b/riscv/insns/amoadd_d.h
new file mode 100644
index 0000000..b8450bf
--- /dev/null
+++ b/riscv/insns/amoadd_d.h
@@ -0,0 +1,4 @@
+require_xpr64;
+reg_t v = mmu.load_uint64(RS1);
+mmu.store_uint64(RS1, RS2 + v);
+RD = v;
diff --git a/riscv/insns/amoadd_w.h b/riscv/insns/amoadd_w.h
new file mode 100644
index 0000000..033b3c8
--- /dev/null
+++ b/riscv/insns/amoadd_w.h
@@ -0,0 +1,3 @@
+reg_t v = mmu.load_int32(RS1);
+mmu.store_uint32(RS1, RS2 + v);
+RD = v;
diff --git a/riscv/insns/amoand_d.h b/riscv/insns/amoand_d.h
new file mode 100644
index 0000000..586eb7f
--- /dev/null
+++ b/riscv/insns/amoand_d.h
@@ -0,0 +1,4 @@
+require_xpr64;
+reg_t v = mmu.load_uint64(RS1);
+mmu.store_uint64(RS1, RS2 & v);
+RD = v;
diff --git a/riscv/insns/amoand_w.h b/riscv/insns/amoand_w.h
new file mode 100644
index 0000000..18a9249
--- /dev/null
+++ b/riscv/insns/amoand_w.h
@@ -0,0 +1,3 @@
+reg_t v = mmu.load_int32(RS1);
+mmu.store_uint32(RS1, RS2 & v);
+RD = v;
diff --git a/riscv/insns/amomax_d.h b/riscv/insns/amomax_d.h
new file mode 100644
index 0000000..1a0bc8a
--- /dev/null
+++ b/riscv/insns/amomax_d.h
@@ -0,0 +1,4 @@
+require_xpr64;
+sreg_t v = mmu.load_int64(RS1);
+mmu.store_uint64(RS1, std::max(sreg_t(RS2),v));
+RD = v;
diff --git a/riscv/insns/amomax_w.h b/riscv/insns/amomax_w.h
new file mode 100644
index 0000000..ff9c2da
--- /dev/null
+++ b/riscv/insns/amomax_w.h
@@ -0,0 +1,3 @@
+int32_t v = mmu.load_int32(RS1);
+mmu.store_uint32(RS1, std::max(int32_t(RS2),v));
+RD = v;
diff --git a/riscv/insns/amomaxu_d.h b/riscv/insns/amomaxu_d.h
new file mode 100644
index 0000000..ccfaf1d
--- /dev/null
+++ b/riscv/insns/amomaxu_d.h
@@ -0,0 +1,4 @@
+require_xpr64;
+reg_t v = mmu.load_uint64(RS1);
+mmu.store_uint64(RS1, std::max(RS2,v));
+RD = v;
diff --git a/riscv/insns/amomaxu_w.h b/riscv/insns/amomaxu_w.h
new file mode 100644
index 0000000..075847d
--- /dev/null
+++ b/riscv/insns/amomaxu_w.h
@@ -0,0 +1,3 @@
+uint32_t v = mmu.load_int32(RS1);
+mmu.store_uint32(RS1, std::max(uint32_t(RS2),v));
+RD = (int32_t)v;
diff --git a/riscv/insns/amomin_d.h b/riscv/insns/amomin_d.h
new file mode 100644
index 0000000..4f3b6d6
--- /dev/null
+++ b/riscv/insns/amomin_d.h
@@ -0,0 +1,4 @@
+require_xpr64;
+sreg_t v = mmu.load_int64(RS1);
+mmu.store_uint64(RS1, std::min(sreg_t(RS2),v));
+RD = v;
diff --git a/riscv/insns/amomin_w.h b/riscv/insns/amomin_w.h
new file mode 100644
index 0000000..529ad50
--- /dev/null
+++ b/riscv/insns/amomin_w.h
@@ -0,0 +1,3 @@
+int32_t v = mmu.load_int32(RS1);
+mmu.store_uint32(RS1, std::min(int32_t(RS2),v));
+RD = v;
diff --git a/riscv/insns/amominu_d.h b/riscv/insns/amominu_d.h
new file mode 100644
index 0000000..c09c51a
--- /dev/null
+++ b/riscv/insns/amominu_d.h
@@ -0,0 +1,4 @@
+require_xpr64;
+reg_t v = mmu.load_uint64(RS1);
+mmu.store_uint64(RS1, std::min(RS2,v));
+RD = v;
diff --git a/riscv/insns/amominu_w.h b/riscv/insns/amominu_w.h
new file mode 100644
index 0000000..d8d6377
--- /dev/null
+++ b/riscv/insns/amominu_w.h
@@ -0,0 +1,3 @@
+uint32_t v = mmu.load_int32(RS1);
+mmu.store_uint32(RS1, std::min(uint32_t(RS2),v));
+RD = (int32_t)v;
diff --git a/riscv/insns/amoor_d.h b/riscv/insns/amoor_d.h
new file mode 100644
index 0000000..76a4508
--- /dev/null
+++ b/riscv/insns/amoor_d.h
@@ -0,0 +1,4 @@
+require_xpr64;
+reg_t v = mmu.load_uint64(RS1);
+mmu.store_uint64(RS1, RS2 | v);
+RD = v;
diff --git a/riscv/insns/amoor_w.h b/riscv/insns/amoor_w.h
new file mode 100644
index 0000000..741fbef
--- /dev/null
+++ b/riscv/insns/amoor_w.h
@@ -0,0 +1,3 @@
+reg_t v = mmu.load_int32(RS1);
+mmu.store_uint32(RS1, RS2 | v);
+RD = v;
diff --git a/riscv/insns/amoswap_d.h b/riscv/insns/amoswap_d.h
new file mode 100644
index 0000000..43e3538
--- /dev/null
+++ b/riscv/insns/amoswap_d.h
@@ -0,0 +1,4 @@
+require_xpr64;
+reg_t v = mmu.load_uint64(RS1);
+mmu.store_uint64(RS1, RS2);
+RD = v;
diff --git a/riscv/insns/amoswap_w.h b/riscv/insns/amoswap_w.h
new file mode 100644
index 0000000..30e6102
--- /dev/null
+++ b/riscv/insns/amoswap_w.h
@@ -0,0 +1,3 @@
+reg_t v = mmu.load_int32(RS1);
+mmu.store_uint32(RS1, RS2);
+RD = v;
diff --git a/riscv/insns/and.h b/riscv/insns/and.h
new file mode 100644
index 0000000..88ac1d8
--- /dev/null
+++ b/riscv/insns/and.h
@@ -0,0 +1 @@
+RD = RS1 & RS2;
diff --git a/riscv/insns/andi.h b/riscv/insns/andi.h
new file mode 100644
index 0000000..5caea16
--- /dev/null
+++ b/riscv/insns/andi.h
@@ -0,0 +1 @@
+RD = SIMM & RS1;
diff --git a/riscv/insns/beq.h b/riscv/insns/beq.h
new file mode 100644
index 0000000..7b26488
--- /dev/null
+++ b/riscv/insns/beq.h
@@ -0,0 +1,2 @@
+if(cmp_trunc(RS1) == cmp_trunc(RS2))
+  set_pc(BRANCH_TARGET);
diff --git a/riscv/insns/bge.h b/riscv/insns/bge.h
new file mode 100644
index 0000000..dca544b
--- /dev/null
+++ b/riscv/insns/bge.h
@@ -0,0 +1,2 @@
+if(sreg_t(cmp_trunc(RS1)) >= sreg_t(cmp_trunc(RS2)))
+  set_pc(BRANCH_TARGET);
diff --git a/riscv/insns/bgeu.h b/riscv/insns/bgeu.h
new file mode 100644
index 0000000..6325466
--- /dev/null
+++ b/riscv/insns/bgeu.h
@@ -0,0 +1,2 @@
+if(cmp_trunc(RS1) >= cmp_trunc(RS2))
+  set_pc(BRANCH_TARGET);
diff --git a/riscv/insns/blt.h b/riscv/insns/blt.h
new file mode 100644
index 0000000..d84fd7a
--- /dev/null
+++ b/riscv/insns/blt.h
@@ -0,0 +1,2 @@
+if(sreg_t(cmp_trunc(RS1)) < sreg_t(cmp_trunc(RS2)))
+  set_pc(BRANCH_TARGET);
diff --git a/riscv/insns/bltu.h b/riscv/insns/bltu.h
new file mode 100644
index 0000000..250fd4f
--- /dev/null
+++ b/riscv/insns/bltu.h
@@ -0,0 +1,2 @@
+if(cmp_trunc(RS1) < cmp_trunc(RS2))
+  set_pc(BRANCH_TARGET);
diff --git a/riscv/insns/bne.h b/riscv/insns/bne.h
new file mode 100644
index 0000000..f775721
--- /dev/null
+++ b/riscv/insns/bne.h
@@ -0,0 +1,2 @@
+if(cmp_trunc(RS1) != cmp_trunc(RS2))
+  set_pc(BRANCH_TARGET);
diff --git a/riscv/insns/break.h b/riscv/insns/break.h
new file mode 100644
index 0000000..7fd3d66
--- /dev/null
+++ b/riscv/insns/break.h
@@ -0,0 +1 @@
+throw trap_breakpoint;
diff --git a/riscv/insns/c_add.h b/riscv/insns/c_add.h
new file mode 100644
index 0000000..2170d69
--- /dev/null
+++ b/riscv/insns/c_add.h
@@ -0,0 +1,2 @@
+require_rvc;
+CRD = CRS1 + CRS2;
diff --git a/riscv/insns/c_add3.h b/riscv/insns/c_add3.h
new file mode 100644
index 0000000..914c85d
--- /dev/null
+++ b/riscv/insns/c_add3.h
@@ -0,0 +1,2 @@
+require_rvc;
+CRDS = CRS1S + CRS2BS;
diff --git a/riscv/insns/c_addi.h b/riscv/insns/c_addi.h
new file mode 100644
index 0000000..448e31a
--- /dev/null
+++ b/riscv/insns/c_addi.h
@@ -0,0 +1,10 @@
+require_rvc;
+if(CRD_REGNUM == 0)
+{
+  reg_t temp = CRS1;
+  if(CIMM6 & 0x20)
+    RA = npc;
+  set_pc(temp);
+}
+else
+  CRD = sext_xprlen(CRS2 + CIMM6);
diff --git a/riscv/insns/c_addiw.h b/riscv/insns/c_addiw.h
new file mode 100644
index 0000000..6a1e0a3
--- /dev/null
+++ b/riscv/insns/c_addiw.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_xpr64;
+CRD = sext32(CRS2 + CIMM6);
diff --git a/riscv/insns/c_and3.h b/riscv/insns/c_and3.h
new file mode 100644
index 0000000..b506d6a
--- /dev/null
+++ b/riscv/insns/c_and3.h
@@ -0,0 +1,2 @@
+require_rvc;
+CRDS = CRS1S & CRS2BS;
diff --git a/riscv/insns/c_beq.h b/riscv/insns/c_beq.h
new file mode 100644
index 0000000..031d96d
--- /dev/null
+++ b/riscv/insns/c_beq.h
@@ -0,0 +1,3 @@
+require_rvc;
+if(cmp_trunc(CRS1S) == cmp_trunc(CRS2S))
+  set_pc(CBRANCH_TARGET);
diff --git a/riscv/insns/c_bne.h b/riscv/insns/c_bne.h
new file mode 100644
index 0000000..caf9229
--- /dev/null
+++ b/riscv/insns/c_bne.h
@@ -0,0 +1,3 @@
+require_rvc;
+if(cmp_trunc(CRS1S) != cmp_trunc(CRS2S))
+  set_pc(CBRANCH_TARGET);
diff --git a/riscv/insns/c_fld.h b/riscv/insns/c_fld.h
new file mode 100644
index 0000000..a726039
--- /dev/null
+++ b/riscv/insns/c_fld.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_fp;
+FCRDS = mmu.load_int64(CRS1S+CIMM5*8);
diff --git a/riscv/insns/c_flw.h b/riscv/insns/c_flw.h
new file mode 100644
index 0000000..cdb7221
--- /dev/null
+++ b/riscv/insns/c_flw.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_fp;
+FCRDS = mmu.load_int32(CRS1S+CIMM5*4);
diff --git a/riscv/insns/c_fsd.h b/riscv/insns/c_fsd.h
new file mode 100644
index 0000000..20814fd
--- /dev/null
+++ b/riscv/insns/c_fsd.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_fp;
+mmu.store_uint64(CRS1S+CIMM5*8, FCRS2S);
diff --git a/riscv/insns/c_fsw.h b/riscv/insns/c_fsw.h
new file mode 100644
index 0000000..1d21629
--- /dev/null
+++ b/riscv/insns/c_fsw.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_fp;
+mmu.store_uint32(CRS1S+CIMM5*4, FCRS2S);
diff --git a/riscv/insns/c_j.h b/riscv/insns/c_j.h
new file mode 100644
index 0000000..5ba9c73
--- /dev/null
+++ b/riscv/insns/c_j.h
@@ -0,0 +1,2 @@
+require_rvc;
+set_pc(CJUMP_TARGET);
diff --git a/riscv/insns/c_ld.h b/riscv/insns/c_ld.h
new file mode 100644
index 0000000..f9c07af
--- /dev/null
+++ b/riscv/insns/c_ld.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_xpr64;
+CRDS = mmu.load_int64(CRS1S+CIMM5*8);
diff --git a/riscv/insns/c_ld0.h b/riscv/insns/c_ld0.h
new file mode 100644
index 0000000..f51a966
--- /dev/null
+++ b/riscv/insns/c_ld0.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_xpr64;
+CRD = mmu.load_int64(CRS1);
diff --git a/riscv/insns/c_ldsp.h b/riscv/insns/c_ldsp.h
new file mode 100644
index 0000000..1fbd9bd
--- /dev/null
+++ b/riscv/insns/c_ldsp.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_xpr64;
+CRD = mmu.load_int64(XPR[30]+CIMM6*8);
diff --git a/riscv/insns/c_li.h b/riscv/insns/c_li.h
new file mode 100644
index 0000000..e65614e
--- /dev/null
+++ b/riscv/insns/c_li.h
@@ -0,0 +1,2 @@
+require_rvc;
+CRD = CIMM6;
diff --git a/riscv/insns/c_lw.h b/riscv/insns/c_lw.h
new file mode 100644
index 0000000..4796ab8
--- /dev/null
+++ b/riscv/insns/c_lw.h
@@ -0,0 +1,2 @@
+require_rvc;
+CRDS = mmu.load_int32(CRS1S+CIMM5*4);
diff --git a/riscv/insns/c_lw0.h b/riscv/insns/c_lw0.h
new file mode 100644
index 0000000..d263a80
--- /dev/null
+++ b/riscv/insns/c_lw0.h
@@ -0,0 +1,2 @@
+require_rvc;
+CRD = mmu.load_int32(CRS1);
diff --git a/riscv/insns/c_lwsp.h b/riscv/insns/c_lwsp.h
new file mode 100644
index 0000000..318342a
--- /dev/null
+++ b/riscv/insns/c_lwsp.h
@@ -0,0 +1,2 @@
+require_rvc;
+CRD = mmu.load_int32(XPR[30]+CIMM6*4);
diff --git a/riscv/insns/c_move.h b/riscv/insns/c_move.h
new file mode 100644
index 0000000..b0aef33
--- /dev/null
+++ b/riscv/insns/c_move.h
@@ -0,0 +1,2 @@
+require_rvc;
+CRD = CRS1;
diff --git a/riscv/insns/c_or3.h b/riscv/insns/c_or3.h
new file mode 100644
index 0000000..143e2ae
--- /dev/null
+++ b/riscv/insns/c_or3.h
@@ -0,0 +1,2 @@
+require_rvc;
+CRDS = CRS1S | CRS2BS;
diff --git a/riscv/insns/c_sd.h b/riscv/insns/c_sd.h
new file mode 100644
index 0000000..b2eb456
--- /dev/null
+++ b/riscv/insns/c_sd.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_xpr64;
+mmu.store_uint64(CRS1S+CIMM5*8, CRS2S);
diff --git a/riscv/insns/c_sdsp.h b/riscv/insns/c_sdsp.h
new file mode 100644
index 0000000..ca97d51
--- /dev/null
+++ b/riscv/insns/c_sdsp.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_xpr64;
+mmu.store_uint64(XPR[30]+CIMM6*8, CRS2);
diff --git a/riscv/insns/c_slli.h b/riscv/insns/c_slli.h
new file mode 100644
index 0000000..5026767
--- /dev/null
+++ b/riscv/insns/c_slli.h
@@ -0,0 +1,5 @@
+require_rvc;
+if(xpr64)
+  CRDS = CRDS << CIMM5U;
+else
+  CRDS = sext32(CRDS << CIMM5U);
diff --git a/riscv/insns/c_slli32.h b/riscv/insns/c_slli32.h
new file mode 100644
index 0000000..1e3e958
--- /dev/null
+++ b/riscv/insns/c_slli32.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_xpr64;
+CRDS = CRDS << (32+CIMM5U);
diff --git a/riscv/insns/c_slliw.h b/riscv/insns/c_slliw.h
new file mode 100644
index 0000000..9e428f5
--- /dev/null
+++ b/riscv/insns/c_slliw.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_xpr64;
+CRDS = sext32(CRDS << CIMM5U);
diff --git a/riscv/insns/c_srai.h b/riscv/insns/c_srai.h
new file mode 100644
index 0000000..aa33424
--- /dev/null
+++ b/riscv/insns/c_srai.h
@@ -0,0 +1,5 @@
+require_rvc;
+if(xpr64)
+  CRDS = sreg_t(CRDS) >> CIMM5U;
+else
+  CRDS = sext32(int32_t(CRDS) >> CIMM5U);
diff --git a/riscv/insns/c_srai32.h b/riscv/insns/c_srai32.h
new file mode 100644
index 0000000..ca7b024
--- /dev/null
+++ b/riscv/insns/c_srai32.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_xpr64;
+CRDS = sreg_t(CRDS) >> (32+CIMM5U);
diff --git a/riscv/insns/c_srli.h b/riscv/insns/c_srli.h
new file mode 100644
index 0000000..56e0681
--- /dev/null
+++ b/riscv/insns/c_srli.h
@@ -0,0 +1,5 @@
+require_rvc;
+if(xpr64)
+  CRDS = CRDS >> CIMM5U;
+else
+  CRDS = sext32(uint32_t(CRDS) >> CIMM5U);
diff --git a/riscv/insns/c_srli32.h b/riscv/insns/c_srli32.h
new file mode 100644
index 0000000..4f5b8ea
--- /dev/null
+++ b/riscv/insns/c_srli32.h
@@ -0,0 +1,3 @@
+require_rvc;
+require_xpr64;
+CRDS = CRDS >> (32+CIMM5U);
diff --git a/riscv/insns/c_sub.h b/riscv/insns/c_sub.h
new file mode 100644
index 0000000..9fd8932
--- /dev/null
+++ b/riscv/insns/c_sub.h
@@ -0,0 +1,2 @@
+require_rvc;
+CRD = CRS1 - CRS2;
diff --git a/riscv/insns/c_sub3.h b/riscv/insns/c_sub3.h
new file mode 100644
index 0000000..53afc84
--- /dev/null
+++ b/riscv/insns/c_sub3.h
@@ -0,0 +1,2 @@
+require_rvc;
+CRDS = CRS1S - CRS2BS;
diff --git a/riscv/insns/c_sw.h b/riscv/insns/c_sw.h
new file mode 100644
index 0000000..f604adf
--- /dev/null
+++ b/riscv/insns/c_sw.h
@@ -0,0 +1,2 @@
+require_rvc;
+mmu.store_uint32(CRS1S+CIMM5*4, CRS2S);
diff --git a/riscv/insns/c_swsp.h b/riscv/insns/c_swsp.h
new file mode 100644
index 0000000..0508f12
--- /dev/null
+++ b/riscv/insns/c_swsp.h
@@ -0,0 +1,2 @@
+require_rvc;
+mmu.store_uint32(XPR[30]+CIMM6*4, CRS2);
diff --git a/riscv/insns/cflush.h b/riscv/insns/cflush.h
new file mode 100644
index 0000000..5117ca0
--- /dev/null
+++ b/riscv/insns/cflush.h
@@ -0,0 +1 @@
+require_supervisor;
diff --git a/riscv/insns/di.h b/riscv/insns/di.h
new file mode 100644
index 0000000..31280d5
--- /dev/null
+++ b/riscv/insns/di.h
@@ -0,0 +1,4 @@
+require_supervisor;
+uint32_t temp = sr;
+set_sr(sr & ~SR_ET);
+RD = temp;
diff --git a/riscv/insns/div.h b/riscv/insns/div.h
new file mode 100644
index 0000000..82a4066
--- /dev/null
+++ b/riscv/insns/div.h
@@ -0,0 +1,6 @@
+if(RS2 == 0)
+  RD = UINT64_MAX;
+else if(sreg_t(RS1) == INT64_MIN && sreg_t(RS2) == -1)
+  RD = RS1;
+else
+  RD = sext_xprlen(sext_xprlen(RS1) / sext_xprlen(RS2));
diff --git a/riscv/insns/divu.h b/riscv/insns/divu.h
new file mode 100644
index 0000000..681afd2
--- /dev/null
+++ b/riscv/insns/divu.h
@@ -0,0 +1,4 @@
+if(RS2 == 0)
+  RD = UINT64_MAX;
+else
+  RD = sext_xprlen(zext_xprlen(RS1) / zext_xprlen(RS2));
diff --git a/riscv/insns/divuw.h b/riscv/insns/divuw.h
new file mode 100644
index 0000000..0ceb040
--- /dev/null
+++ b/riscv/insns/divuw.h
@@ -0,0 +1,5 @@
+require_xpr64;
+if(RS2 == 0)
+  RD = UINT64_MAX;
+else
+  RD = sext32(zext32(RS1) / zext32(RS2));
diff --git a/riscv/insns/divw.h b/riscv/insns/divw.h
new file mode 100644
index 0000000..51c3d80
--- /dev/null
+++ b/riscv/insns/divw.h
@@ -0,0 +1,7 @@
+require_xpr64;
+if(RS2 == 0)
+  RD = UINT64_MAX;
+else if(int32_t(RS1) == INT32_MIN && int32_t(RS2) == -1)
+  RD = RS1;
+else
+  RD = sext32(int32_t(RS1) / int32_t(RS2));
diff --git a/riscv/insns/ei.h b/riscv/insns/ei.h
new file mode 100644
index 0000000..8306aeb
--- /dev/null
+++ b/riscv/insns/ei.h
@@ -0,0 +1,4 @@
+require_supervisor;
+uint32_t temp = sr;
+set_sr(sr | SR_ET);
+RD = temp;
diff --git a/riscv/insns/eret.h b/riscv/insns/eret.h
new file mode 100644
index 0000000..46d5bed
--- /dev/null
+++ b/riscv/insns/eret.h
@@ -0,0 +1,5 @@
+require_supervisor;
+if(sr & SR_ET)
+  throw trap_illegal_instruction;
+set_sr(((sr & SR_PS) ? sr : (sr & ~SR_S)) | SR_ET);
+set_pc(epc);
diff --git a/riscv/insns/fadd_d.h b/riscv/insns/fadd_d.h
new file mode 100644
index 0000000..48c76a7
--- /dev/null
+++ b/riscv/insns/fadd_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f64_add(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/fadd_s.h b/riscv/insns/fadd_s.h
new file mode 100644
index 0000000..2fd5429
--- /dev/null
+++ b/riscv/insns/fadd_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f32_add(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_d_l.h b/riscv/insns/fcvt_d_l.h
new file mode 100644
index 0000000..68c0482
--- /dev/null
+++ b/riscv/insns/fcvt_d_l.h
@@ -0,0 +1,5 @@
+require_xpr64;
+require_fp;
+softfloat_roundingMode = RM;
+FRD = i64_to_f64(RS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_d_lu.h b/riscv/insns/fcvt_d_lu.h
new file mode 100644
index 0000000..2032758
--- /dev/null
+++ b/riscv/insns/fcvt_d_lu.h
@@ -0,0 +1,5 @@
+require_xpr64;
+require_fp;
+softfloat_roundingMode = RM;
+FRD = ui64_to_f64(RS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_d_s.h b/riscv/insns/fcvt_d_s.h
new file mode 100644
index 0000000..6b1a09c
--- /dev/null
+++ b/riscv/insns/fcvt_d_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f32_to_f64(FRS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_d_w.h b/riscv/insns/fcvt_d_w.h
new file mode 100644
index 0000000..52abd75
--- /dev/null
+++ b/riscv/insns/fcvt_d_w.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = i32_to_f64((int32_t)RS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_d_wu.h b/riscv/insns/fcvt_d_wu.h
new file mode 100644
index 0000000..61a8a78
--- /dev/null
+++ b/riscv/insns/fcvt_d_wu.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = ui32_to_f64((uint32_t)RS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_l_d.h b/riscv/insns/fcvt_l_d.h
new file mode 100644
index 0000000..206ba4f
--- /dev/null
+++ b/riscv/insns/fcvt_l_d.h
@@ -0,0 +1,5 @@
+require_xpr64;
+require_fp;
+softfloat_roundingMode = RM;
+RD = f64_to_i64(FRS1, RM, true);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_l_s.h b/riscv/insns/fcvt_l_s.h
new file mode 100644
index 0000000..e05f476
--- /dev/null
+++ b/riscv/insns/fcvt_l_s.h
@@ -0,0 +1,5 @@
+require_xpr64;
+require_fp;
+softfloat_roundingMode = RM;
+RD = f32_to_i64(FRS1, RM, true);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_lu_d.h b/riscv/insns/fcvt_lu_d.h
new file mode 100644
index 0000000..44c3dd6
--- /dev/null
+++ b/riscv/insns/fcvt_lu_d.h
@@ -0,0 +1,5 @@
+require_xpr64;
+require_fp;
+softfloat_roundingMode = RM;
+RD = f64_to_ui64(FRS1, RM, true);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_lu_s.h b/riscv/insns/fcvt_lu_s.h
new file mode 100644
index 0000000..13de436
--- /dev/null
+++ b/riscv/insns/fcvt_lu_s.h
@@ -0,0 +1,5 @@
+require_xpr64;
+require_fp;
+softfloat_roundingMode = RM;
+RD = f32_to_ui64(FRS1, RM, true);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_s_d.h b/riscv/insns/fcvt_s_d.h
new file mode 100644
index 0000000..e5289c4
--- /dev/null
+++ b/riscv/insns/fcvt_s_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f64_to_f32(FRS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_s_l.h b/riscv/insns/fcvt_s_l.h
new file mode 100644
index 0000000..f149229
--- /dev/null
+++ b/riscv/insns/fcvt_s_l.h
@@ -0,0 +1,5 @@
+require_xpr64;
+require_fp;
+softfloat_roundingMode = RM;
+FRD = i64_to_f32(RS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_s_lu.h b/riscv/insns/fcvt_s_lu.h
new file mode 100644
index 0000000..d9d0946
--- /dev/null
+++ b/riscv/insns/fcvt_s_lu.h
@@ -0,0 +1,5 @@
+require_xpr64;
+require_fp;
+softfloat_roundingMode = RM;
+FRD = ui64_to_f32(RS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_s_w.h b/riscv/insns/fcvt_s_w.h
new file mode 100644
index 0000000..dedebb5
--- /dev/null
+++ b/riscv/insns/fcvt_s_w.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = i32_to_f32((int32_t)RS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_s_wu.h b/riscv/insns/fcvt_s_wu.h
new file mode 100644
index 0000000..abb782c
--- /dev/null
+++ b/riscv/insns/fcvt_s_wu.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = ui32_to_f32((uint32_t)RS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_w_d.h b/riscv/insns/fcvt_w_d.h
new file mode 100644
index 0000000..88dc3d3
--- /dev/null
+++ b/riscv/insns/fcvt_w_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+RD = sext32(f64_to_i32(FRS1, RM, true));
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_w_s.h b/riscv/insns/fcvt_w_s.h
new file mode 100644
index 0000000..f14cc19
--- /dev/null
+++ b/riscv/insns/fcvt_w_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+RD = sext32(f32_to_i32(FRS1, RM, true));
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_wu_d.h b/riscv/insns/fcvt_wu_d.h
new file mode 100644
index 0000000..43ad6f6
--- /dev/null
+++ b/riscv/insns/fcvt_wu_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+RD = sext32(f64_to_ui32(FRS1, RM, true));
+set_fp_exceptions;
diff --git a/riscv/insns/fcvt_wu_s.h b/riscv/insns/fcvt_wu_s.h
new file mode 100644
index 0000000..ff7a11c
--- /dev/null
+++ b/riscv/insns/fcvt_wu_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+RD = sext32(f32_to_ui32(FRS1, RM, true));
+set_fp_exceptions;
diff --git a/riscv/insns/fdiv_d.h b/riscv/insns/fdiv_d.h
new file mode 100644
index 0000000..aa00c98
--- /dev/null
+++ b/riscv/insns/fdiv_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f64_div(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/fdiv_s.h b/riscv/insns/fdiv_s.h
new file mode 100644
index 0000000..8c76587
--- /dev/null
+++ b/riscv/insns/fdiv_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f32_div(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/fence.h b/riscv/insns/fence.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/fence.h
diff --git a/riscv/insns/fence_g_cv.h b/riscv/insns/fence_g_cv.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/fence_g_cv.h
diff --git a/riscv/insns/fence_g_v.h b/riscv/insns/fence_g_v.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/fence_g_v.h
diff --git a/riscv/insns/fence_i.h b/riscv/insns/fence_i.h
new file mode 100644
index 0000000..a2dbffe
--- /dev/null
+++ b/riscv/insns/fence_i.h
@@ -0,0 +1 @@
+mmu.flush_icache();
diff --git a/riscv/insns/fence_l_cv.h b/riscv/insns/fence_l_cv.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/fence_l_cv.h
diff --git a/riscv/insns/fence_l_v.h b/riscv/insns/fence_l_v.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/fence_l_v.h
diff --git a/riscv/insns/feq_d.h b/riscv/insns/feq_d.h
new file mode 100644
index 0000000..9db8760
--- /dev/null
+++ b/riscv/insns/feq_d.h
@@ -0,0 +1,3 @@
+require_fp;
+RD = f64_eq(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/feq_s.h b/riscv/insns/feq_s.h
new file mode 100644
index 0000000..658e8f6
--- /dev/null
+++ b/riscv/insns/feq_s.h
@@ -0,0 +1,3 @@
+require_fp;
+RD = f32_eq(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/fld.h b/riscv/insns/fld.h
new file mode 100644
index 0000000..123dea4
--- /dev/null
+++ b/riscv/insns/fld.h
@@ -0,0 +1,2 @@
+require_fp;
+FRD = mmu.load_int64(RS1+SIMM);
diff --git a/riscv/insns/fle_d.h b/riscv/insns/fle_d.h
new file mode 100644
index 0000000..da76187
--- /dev/null
+++ b/riscv/insns/fle_d.h
@@ -0,0 +1,3 @@
+require_fp;
+RD = f64_le(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/fle_s.h b/riscv/insns/fle_s.h
new file mode 100644
index 0000000..9c83a17
--- /dev/null
+++ b/riscv/insns/fle_s.h
@@ -0,0 +1,3 @@
+require_fp;
+RD = f32_le(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/flt_d.h b/riscv/insns/flt_d.h
new file mode 100644
index 0000000..01d135a
--- /dev/null
+++ b/riscv/insns/flt_d.h
@@ -0,0 +1,3 @@
+require_fp;
+RD = f64_lt(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/flt_s.h b/riscv/insns/flt_s.h
new file mode 100644
index 0000000..52eee5d
--- /dev/null
+++ b/riscv/insns/flt_s.h
@@ -0,0 +1,3 @@
+require_fp;
+RD = f32_lt(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/flw.h b/riscv/insns/flw.h
new file mode 100644
index 0000000..335fd7d
--- /dev/null
+++ b/riscv/insns/flw.h
@@ -0,0 +1,2 @@
+require_fp;
+FRD = mmu.load_int32(RS1+SIMM);
diff --git a/riscv/insns/fmadd_d.h b/riscv/insns/fmadd_d.h
new file mode 100644
index 0000000..f67853e
--- /dev/null
+++ b/riscv/insns/fmadd_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f64_mulAdd(FRS1, FRS2, FRS3);
+set_fp_exceptions;
diff --git a/riscv/insns/fmadd_s.h b/riscv/insns/fmadd_s.h
new file mode 100644
index 0000000..19db642
--- /dev/null
+++ b/riscv/insns/fmadd_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f32_mulAdd(FRS1, FRS2, FRS3);
+set_fp_exceptions;
diff --git a/riscv/insns/fmax_d.h b/riscv/insns/fmax_d.h
new file mode 100644
index 0000000..cbbb343
--- /dev/null
+++ b/riscv/insns/fmax_d.h
@@ -0,0 +1,4 @@
+require_fp;
+FRD = isNaNF64UI(FRS2) || f64_le_quiet(FRS2,FRS1) /* && FRS1 not NaN */
+      ? FRS1 : FRS2;
+set_fp_exceptions;
diff --git a/riscv/insns/fmax_s.h b/riscv/insns/fmax_s.h
new file mode 100644
index 0000000..8df665f
--- /dev/null
+++ b/riscv/insns/fmax_s.h
@@ -0,0 +1,4 @@
+require_fp;
+FRD = isNaNF32UI(FRS2) || f32_le_quiet(FRS2,FRS1) /* && FRS1 not NaN */
+      ? FRS1 : FRS2;
+set_fp_exceptions;
diff --git a/riscv/insns/fmin_d.h b/riscv/insns/fmin_d.h
new file mode 100644
index 0000000..3d3d454
--- /dev/null
+++ b/riscv/insns/fmin_d.h
@@ -0,0 +1,4 @@
+require_fp;
+FRD = isNaNF64UI(FRS2) || f64_lt_quiet(FRS1,FRS2) /* && FRS1 not NaN */
+      ? FRS1 : FRS2;
+set_fp_exceptions;
diff --git a/riscv/insns/fmin_s.h b/riscv/insns/fmin_s.h
new file mode 100644
index 0000000..994c860
--- /dev/null
+++ b/riscv/insns/fmin_s.h
@@ -0,0 +1,4 @@
+require_fp;
+FRD = isNaNF32UI(FRS2) || f32_lt_quiet(FRS1,FRS2) /* && FRS1 not NaN */
+      ? FRS1 : FRS2;
+set_fp_exceptions;
diff --git a/riscv/insns/fmovn.h b/riscv/insns/fmovn.h
new file mode 100644
index 0000000..394b56c
--- /dev/null
+++ b/riscv/insns/fmovn.h
@@ -0,0 +1,2 @@
+require_vector;
+if (RS1 & 0x1) FRD = FRS2;
diff --git a/riscv/insns/fmovz.h b/riscv/insns/fmovz.h
new file mode 100644
index 0000000..7862216
--- /dev/null
+++ b/riscv/insns/fmovz.h
@@ -0,0 +1,2 @@
+require_vector;
+if (~RS1 & 0x1) FRD = FRS2;
diff --git a/riscv/insns/fmsub_d.h b/riscv/insns/fmsub_d.h
new file mode 100644
index 0000000..b1e9340
--- /dev/null
+++ b/riscv/insns/fmsub_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f64_mulAdd(FRS1, FRS2, FRS3 ^ (uint64_t)INT64_MIN);
+set_fp_exceptions;
diff --git a/riscv/insns/fmsub_s.h b/riscv/insns/fmsub_s.h
new file mode 100644
index 0000000..d3349f5
--- /dev/null
+++ b/riscv/insns/fmsub_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f32_mulAdd(FRS1, FRS2, FRS3 ^ (uint32_t)INT32_MIN);
+set_fp_exceptions;
diff --git a/riscv/insns/fmul_d.h b/riscv/insns/fmul_d.h
new file mode 100644
index 0000000..a8adedd
--- /dev/null
+++ b/riscv/insns/fmul_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f64_mul(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/fmul_s.h b/riscv/insns/fmul_s.h
new file mode 100644
index 0000000..6475578
--- /dev/null
+++ b/riscv/insns/fmul_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f32_mul(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/fnmadd_d.h b/riscv/insns/fnmadd_d.h
new file mode 100644
index 0000000..1e2ee27
--- /dev/null
+++ b/riscv/insns/fnmadd_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f64_mulAdd(FRS1, FRS2, FRS3) ^ (uint64_t)INT64_MIN;
+set_fp_exceptions;
diff --git a/riscv/insns/fnmadd_s.h b/riscv/insns/fnmadd_s.h
new file mode 100644
index 0000000..78abb78
--- /dev/null
+++ b/riscv/insns/fnmadd_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f32_mulAdd(FRS1, FRS2, FRS3) ^ (uint32_t)INT32_MIN;
+set_fp_exceptions;
diff --git a/riscv/insns/fnmsub_d.h b/riscv/insns/fnmsub_d.h
new file mode 100644
index 0000000..ae643a5
--- /dev/null
+++ b/riscv/insns/fnmsub_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f64_mulAdd(FRS1, FRS2, FRS3 ^ (uint64_t)INT64_MIN) ^ (uint64_t)INT64_MIN;
+set_fp_exceptions;
diff --git a/riscv/insns/fnmsub_s.h b/riscv/insns/fnmsub_s.h
new file mode 100644
index 0000000..cbb70ba
--- /dev/null
+++ b/riscv/insns/fnmsub_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f32_mulAdd(FRS1, FRS2, FRS3 ^ (uint32_t)INT32_MIN) ^ (uint32_t)INT32_MIN;
+set_fp_exceptions;
diff --git a/riscv/insns/fsd.h b/riscv/insns/fsd.h
new file mode 100644
index 0000000..113398e
--- /dev/null
+++ b/riscv/insns/fsd.h
@@ -0,0 +1,2 @@
+require_fp;
+mmu.store_uint64(RS1+BIMM, FRS2);
diff --git a/riscv/insns/fsgnj_d.h b/riscv/insns/fsgnj_d.h
new file mode 100644
index 0000000..f66e804
--- /dev/null
+++ b/riscv/insns/fsgnj_d.h
@@ -0,0 +1,2 @@
+require_fp;
+FRD = (FRS1 &~ INT64_MIN) | (FRS2 & INT64_MIN);
diff --git a/riscv/insns/fsgnj_s.h b/riscv/insns/fsgnj_s.h
new file mode 100644
index 0000000..35609ac
--- /dev/null
+++ b/riscv/insns/fsgnj_s.h
@@ -0,0 +1,2 @@
+require_fp;
+FRD = (FRS1 &~ (uint32_t)INT32_MIN) | (FRS2 & (uint32_t)INT32_MIN);
diff --git a/riscv/insns/fsgnjn_d.h b/riscv/insns/fsgnjn_d.h
new file mode 100644
index 0000000..22de215
--- /dev/null
+++ b/riscv/insns/fsgnjn_d.h
@@ -0,0 +1,2 @@
+require_fp;
+FRD = (FRS1 &~ INT64_MIN) | ((~FRS2) & INT64_MIN);
diff --git a/riscv/insns/fsgnjn_s.h b/riscv/insns/fsgnjn_s.h
new file mode 100644
index 0000000..dd66d71
--- /dev/null
+++ b/riscv/insns/fsgnjn_s.h
@@ -0,0 +1,2 @@
+require_fp;
+FRD = (FRS1 &~ (uint32_t)INT32_MIN) | ((~FRS2) & (uint32_t)INT32_MIN);
diff --git a/riscv/insns/fsgnjx_d.h b/riscv/insns/fsgnjx_d.h
new file mode 100644
index 0000000..331b6e4
--- /dev/null
+++ b/riscv/insns/fsgnjx_d.h
@@ -0,0 +1,2 @@
+require_fp;
+FRD = FRS1 ^ (FRS2 & INT64_MIN);
diff --git a/riscv/insns/fsgnjx_s.h b/riscv/insns/fsgnjx_s.h
new file mode 100644
index 0000000..b455406
--- /dev/null
+++ b/riscv/insns/fsgnjx_s.h
@@ -0,0 +1,2 @@
+require_fp;
+FRD = FRS1 ^ (FRS2 & (uint32_t)INT32_MIN);
diff --git a/riscv/insns/fsqrt_d.h b/riscv/insns/fsqrt_d.h
new file mode 100644
index 0000000..7647c9c
--- /dev/null
+++ b/riscv/insns/fsqrt_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f64_sqrt(FRS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fsqrt_s.h b/riscv/insns/fsqrt_s.h
new file mode 100644
index 0000000..426f241
--- /dev/null
+++ b/riscv/insns/fsqrt_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f32_sqrt(FRS1);
+set_fp_exceptions;
diff --git a/riscv/insns/fsub_d.h b/riscv/insns/fsub_d.h
new file mode 100644
index 0000000..e25eebb
--- /dev/null
+++ b/riscv/insns/fsub_d.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f64_sub(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/fsub_s.h b/riscv/insns/fsub_s.h
new file mode 100644
index 0000000..6c64d04
--- /dev/null
+++ b/riscv/insns/fsub_s.h
@@ -0,0 +1,4 @@
+require_fp;
+softfloat_roundingMode = RM;
+FRD = f32_sub(FRS1, FRS2);
+set_fp_exceptions;
diff --git a/riscv/insns/fsw.h b/riscv/insns/fsw.h
new file mode 100644
index 0000000..23d3333
--- /dev/null
+++ b/riscv/insns/fsw.h
@@ -0,0 +1,2 @@
+require_fp;
+mmu.store_uint32(RS1+BIMM, FRS2);
diff --git a/riscv/insns/j.h b/riscv/insns/j.h
new file mode 100644
index 0000000..3a4da2a
--- /dev/null
+++ b/riscv/insns/j.h
@@ -0,0 +1 @@
+set_pc(JUMP_TARGET);
diff --git a/riscv/insns/jal.h b/riscv/insns/jal.h
new file mode 100644
index 0000000..41dc403
--- /dev/null
+++ b/riscv/insns/jal.h
@@ -0,0 +1,2 @@
+RA = npc;
+set_pc(JUMP_TARGET);
diff --git a/riscv/insns/jalr_c.h b/riscv/insns/jalr_c.h
new file mode 100644
index 0000000..91be911
--- /dev/null
+++ b/riscv/insns/jalr_c.h
@@ -0,0 +1,3 @@
+reg_t temp = RS1;
+RD = npc;
+set_pc(temp + SIMM);
diff --git a/riscv/insns/jalr_j.h b/riscv/insns/jalr_j.h
new file mode 100644
index 0000000..0d2ef12
--- /dev/null
+++ b/riscv/insns/jalr_j.h
@@ -0,0 +1 @@
+#include "insns/jalr_c.h"
diff --git a/riscv/insns/jalr_r.h b/riscv/insns/jalr_r.h
new file mode 100644
index 0000000..0d2ef12
--- /dev/null
+++ b/riscv/insns/jalr_r.h
@@ -0,0 +1 @@
+#include "insns/jalr_c.h"
diff --git a/riscv/insns/lb.h b/riscv/insns/lb.h
new file mode 100644
index 0000000..81ba7de
--- /dev/null
+++ b/riscv/insns/lb.h
@@ -0,0 +1 @@
+RD = mmu.load_int8(RS1+SIMM);
diff --git a/riscv/insns/lbu.h b/riscv/insns/lbu.h
new file mode 100644
index 0000000..12c688a
--- /dev/null
+++ b/riscv/insns/lbu.h
@@ -0,0 +1 @@
+RD = mmu.load_uint8(RS1+SIMM);
diff --git a/riscv/insns/ld.h b/riscv/insns/ld.h
new file mode 100644
index 0000000..940d348
--- /dev/null
+++ b/riscv/insns/ld.h
@@ -0,0 +1,2 @@
+require_xpr64;
+RD = mmu.load_int64(RS1+SIMM);
diff --git a/riscv/insns/lh.h b/riscv/insns/lh.h
new file mode 100644
index 0000000..ec25bc4
--- /dev/null
+++ b/riscv/insns/lh.h
@@ -0,0 +1 @@
+RD = mmu.load_int16(RS1+SIMM);
diff --git a/riscv/insns/lhu.h b/riscv/insns/lhu.h
new file mode 100644
index 0000000..0999c00
--- /dev/null
+++ b/riscv/insns/lhu.h
@@ -0,0 +1 @@
+RD = mmu.load_uint16(RS1+SIMM);
diff --git a/riscv/insns/lui.h b/riscv/insns/lui.h
new file mode 100644
index 0000000..6af2a2a
--- /dev/null
+++ b/riscv/insns/lui.h
@@ -0,0 +1 @@
+RD = sext32(BIGIMM << IMM_BITS);
diff --git a/riscv/insns/lw.h b/riscv/insns/lw.h
new file mode 100644
index 0000000..769c9fd
--- /dev/null
+++ b/riscv/insns/lw.h
@@ -0,0 +1 @@
+RD = mmu.load_int32(RS1+SIMM);
diff --git a/riscv/insns/lwu.h b/riscv/insns/lwu.h
new file mode 100644
index 0000000..f8f9841
--- /dev/null
+++ b/riscv/insns/lwu.h
@@ -0,0 +1,2 @@
+require_xpr64;
+RD = mmu.load_uint32(RS1+SIMM);
diff --git a/riscv/insns/mffsr.h b/riscv/insns/mffsr.h
new file mode 100644
index 0000000..29debc4
--- /dev/null
+++ b/riscv/insns/mffsr.h
@@ -0,0 +1,2 @@
+require_fp;
+RD = fsr;
diff --git a/riscv/insns/mfpcr.h b/riscv/insns/mfpcr.h
new file mode 100644
index 0000000..7de089e
--- /dev/null
+++ b/riscv/insns/mfpcr.h
@@ -0,0 +1,68 @@
+require_supervisor;
+
+reg_t val;
+
+switch(insn.rtype.rs2)
+{
+  case 0:
+    val = sr;
+    break;
+  case 1:
+    val = epc;
+    break;
+  case 2:
+    val = badvaddr;
+    break;
+  case 3:
+    val = evec;
+    break;
+  case 4:
+    val = count;
+    break;
+  case 5:
+    val = compare;
+    break;
+  case 6:
+    val = cause;
+    break;
+  case 7:
+    val = 0;
+    cause &= ~(1 << (IPI_IRQ+CAUSE_IP_SHIFT));
+    break;
+
+  case 8:
+    val = mmu.memsz >> PGSHIFT;
+    break;
+
+  case 9:
+    val = mmu.get_ptbr();
+    break;
+
+  case 10:
+    val = id;
+    break;
+
+  case 11:
+    val = vecbanks;
+    break;
+
+  case 12:
+    val = sim.num_cores();
+    break;
+
+  case 17:
+    val = sim.get_fromhost();
+    break;
+
+  case 24:
+    val = pcr_k0;
+    break;
+  case 25:
+    val = pcr_k1;
+    break;
+
+  default:
+    val = -1;
+}
+
+RD = sext_xprlen(val);
diff --git a/riscv/insns/mftx_d.h b/riscv/insns/mftx_d.h
new file mode 100644
index 0000000..31be4cb
--- /dev/null
+++ b/riscv/insns/mftx_d.h
@@ -0,0 +1,3 @@
+require_xpr64;
+require_fp;
+RD = FRS2;
diff --git a/riscv/insns/mftx_s.h b/riscv/insns/mftx_s.h
new file mode 100644
index 0000000..589b33b
--- /dev/null
+++ b/riscv/insns/mftx_s.h
@@ -0,0 +1,2 @@
+require_fp;
+RD = sext32(FRS2);
diff --git a/riscv/insns/movn.h b/riscv/insns/movn.h
new file mode 100644
index 0000000..402d6d3
--- /dev/null
+++ b/riscv/insns/movn.h
@@ -0,0 +1,2 @@
+require_vector;
+if (RS1 & 0x1) RD = RS2;
diff --git a/riscv/insns/movz.h b/riscv/insns/movz.h
new file mode 100644
index 0000000..74cf8a9
--- /dev/null
+++ b/riscv/insns/movz.h
@@ -0,0 +1,2 @@
+require_vector;
+if (~RS1 & 0x1) RD = RS2;
diff --git a/riscv/insns/mtfsr.h b/riscv/insns/mtfsr.h
new file mode 100644
index 0000000..cc6f9ea
--- /dev/null
+++ b/riscv/insns/mtfsr.h
@@ -0,0 +1,4 @@
+require_fp;
+uint32_t tmp = fsr;
+set_fsr(RS1);
+RD = tmp;
diff --git a/riscv/insns/mtpcr.h b/riscv/insns/mtpcr.h
new file mode 100644
index 0000000..59f864f
--- /dev/null
+++ b/riscv/insns/mtpcr.h
@@ -0,0 +1,45 @@
+require_supervisor;
+
+switch(insn.rtype.rs2)
+{
+  case 0:
+    set_sr(RS1);
+    break;
+  case 1:
+    epc = RS1;
+    break;
+  case 3:
+    evec = RS1;
+    break;
+  case 4:
+    count = RS1;
+    break;
+  case 5:
+    cause &= ~(1 << (TIMER_IRQ+CAUSE_IP_SHIFT));
+    compare = RS1;
+    break;
+
+  case 7:
+    sim.send_ipi(RS1);
+    break;
+
+  case 9:
+    mmu.set_ptbr(RS1);
+    break;
+
+  case 11:
+    vecbanks = RS1 & 0xff;
+    vecbanks_count = __builtin_popcountll(vecbanks);
+    break;
+
+  case 16:
+    sim.set_tohost(RS1);
+    break;
+
+  case 24:
+    pcr_k0 = RS1;
+    break;
+  case 25:
+    pcr_k1 = RS1;
+    break;
+}
diff --git a/riscv/insns/mul.h b/riscv/insns/mul.h
new file mode 100644
index 0000000..770d733
--- /dev/null
+++ b/riscv/insns/mul.h
@@ -0,0 +1 @@
+RD = sext_xprlen(RS1 * RS2);
diff --git a/riscv/insns/mulh.h b/riscv/insns/mulh.h
new file mode 100644
index 0000000..f771a62
--- /dev/null
+++ b/riscv/insns/mulh.h
@@ -0,0 +1,8 @@
+if(xpr64)
+{
+  int64_t a = RS1;
+  int64_t b = RS2;
+  RD = (int128_t(a) * int128_t(b)) >> 64;
+}
+else
+  RD = sext32((sext32(RS1) * sext32(RS2)) >> 32);
diff --git a/riscv/insns/mulhsu.h b/riscv/insns/mulhsu.h
new file mode 100644
index 0000000..c832657
--- /dev/null
+++ b/riscv/insns/mulhsu.h
@@ -0,0 +1,8 @@
+if(xpr64)
+{
+  int64_t a = RS1;
+  uint64_t b = RS2;
+  RD = (int128_t(a) * uint128_t(b)) >> 64;
+}
+else
+  RD = sext32((sext32(RS1) * reg_t((uint32_t)RS2)) >> 32);
diff --git a/riscv/insns/mulhu.h b/riscv/insns/mulhu.h
new file mode 100644
index 0000000..6334426
--- /dev/null
+++ b/riscv/insns/mulhu.h
@@ -0,0 +1,4 @@
+if(xpr64)
+  RD = (uint128_t(RS1) * uint128_t(RS2)) >> 64;
+else
+  RD = sext32(((uint64_t)(uint32_t)RS1 * (uint64_t)(uint32_t)RS2) >> 32);
diff --git a/riscv/insns/mulw.h b/riscv/insns/mulw.h
new file mode 100644
index 0000000..7b0a934
--- /dev/null
+++ b/riscv/insns/mulw.h
@@ -0,0 +1,2 @@
+require_xpr64;
+RD = sext32(RS1 * RS2);
diff --git a/riscv/insns/mxtf_d.h b/riscv/insns/mxtf_d.h
new file mode 100644
index 0000000..29792ec
--- /dev/null
+++ b/riscv/insns/mxtf_d.h
@@ -0,0 +1,3 @@
+require_xpr64;
+require_fp;
+FRD = RS1;
diff --git a/riscv/insns/mxtf_s.h b/riscv/insns/mxtf_s.h
new file mode 100644
index 0000000..54546ea
--- /dev/null
+++ b/riscv/insns/mxtf_s.h
@@ -0,0 +1,2 @@
+require_fp;
+FRD = RS1;
diff --git a/riscv/insns/or.h b/riscv/insns/or.h
new file mode 100644
index 0000000..07bcac3
--- /dev/null
+++ b/riscv/insns/or.h
@@ -0,0 +1 @@
+RD = RS1 | RS2;
diff --git a/riscv/insns/ori.h b/riscv/insns/ori.h
new file mode 100644
index 0000000..9561b97
--- /dev/null
+++ b/riscv/insns/ori.h
@@ -0,0 +1 @@
+RD = SIMM | RS1;
diff --git a/riscv/insns/rdcycle.h b/riscv/insns/rdcycle.h
new file mode 100644
index 0000000..9b966a6
--- /dev/null
+++ b/riscv/insns/rdcycle.h
@@ -0,0 +1 @@
+RD = cycle;
diff --git a/riscv/insns/rdinstret.h b/riscv/insns/rdinstret.h
new file mode 100644
index 0000000..9b966a6
--- /dev/null
+++ b/riscv/insns/rdinstret.h
@@ -0,0 +1 @@
+RD = cycle;
diff --git a/riscv/insns/rdnpc.h b/riscv/insns/rdnpc.h
new file mode 100644
index 0000000..5525421
--- /dev/null
+++ b/riscv/insns/rdnpc.h
@@ -0,0 +1 @@
+RD = npc;
diff --git a/riscv/insns/rdtime.h b/riscv/insns/rdtime.h
new file mode 100644
index 0000000..9b966a6
--- /dev/null
+++ b/riscv/insns/rdtime.h
@@ -0,0 +1 @@
+RD = cycle;
diff --git a/riscv/insns/rem.h b/riscv/insns/rem.h
new file mode 100644
index 0000000..ac82a56
--- /dev/null
+++ b/riscv/insns/rem.h
@@ -0,0 +1,6 @@
+if(RS2 == 0)
+  RD = RS1;
+else if(sreg_t(RS1) == INT64_MIN && sreg_t(RS2) == -1)
+  RD = 0;
+else
+  RD = sext_xprlen(sext_xprlen(RS1) % sext_xprlen(RS2));
diff --git a/riscv/insns/remu.h b/riscv/insns/remu.h
new file mode 100644
index 0000000..c698aca
--- /dev/null
+++ b/riscv/insns/remu.h
@@ -0,0 +1,4 @@
+if(RS2 == 0)
+  RD = RS1;
+else
+  RD = sext_xprlen(zext_xprlen(RS1) % zext_xprlen(RS2));
diff --git a/riscv/insns/remuw.h b/riscv/insns/remuw.h
new file mode 100644
index 0000000..8234af3
--- /dev/null
+++ b/riscv/insns/remuw.h
@@ -0,0 +1,5 @@
+require_xpr64;
+if(RS2 == 0)
+  RD = RS1;
+else
+  RD = sext32(zext_xprlen(RS1) % zext_xprlen(RS2));
diff --git a/riscv/insns/remw.h b/riscv/insns/remw.h
new file mode 100644
index 0000000..93c3858
--- /dev/null
+++ b/riscv/insns/remw.h
@@ -0,0 +1,7 @@
+require_xpr64;
+if(RS2 == 0)
+  RD = RS1;
+else if(int32_t(RS1) == INT32_MIN && int32_t(RS2) == -1)
+  RD = 0;
+else
+  RD = sext32(int32_t(RS1) % int32_t(RS2));
diff --git a/riscv/insns/sb.h b/riscv/insns/sb.h
new file mode 100644
index 0000000..af5bd10
--- /dev/null
+++ b/riscv/insns/sb.h
@@ -0,0 +1 @@
+mmu.store_uint8(RS1+BIMM, RS2);
diff --git a/riscv/insns/sd.h b/riscv/insns/sd.h
new file mode 100644
index 0000000..2009149
--- /dev/null
+++ b/riscv/insns/sd.h
@@ -0,0 +1,2 @@
+require_xpr64;
+mmu.store_uint64(RS1+BIMM, RS2);
diff --git a/riscv/insns/sh.h b/riscv/insns/sh.h
new file mode 100644
index 0000000..a484e1e
--- /dev/null
+++ b/riscv/insns/sh.h
@@ -0,0 +1 @@
+mmu.store_uint16(RS1+BIMM, RS2);
diff --git a/riscv/insns/sll.h b/riscv/insns/sll.h
new file mode 100644
index 0000000..86eb966
--- /dev/null
+++ b/riscv/insns/sll.h
@@ -0,0 +1 @@
+RD = sext_xprlen(RS1 << (RS2 & (xprlen-1)));
diff --git a/riscv/insns/slli.h b/riscv/insns/slli.h
new file mode 100644
index 0000000..bfaf430
--- /dev/null
+++ b/riscv/insns/slli.h
@@ -0,0 +1,8 @@
+if(xpr64)
+  RD = RS1 << SHAMT;
+else
+{
+  if(SHAMT & 0x20)
+    throw trap_illegal_instruction;
+  RD = sext32(RS1 << SHAMT);
+}
diff --git a/riscv/insns/slliw.h b/riscv/insns/slliw.h
new file mode 100644
index 0000000..1f6e50d
--- /dev/null
+++ b/riscv/insns/slliw.h
@@ -0,0 +1,2 @@
+require_xpr64;
+RD = sext32(RS1 << SHAMTW);
diff --git a/riscv/insns/sllw.h b/riscv/insns/sllw.h
new file mode 100644
index 0000000..f3356d8
--- /dev/null
+++ b/riscv/insns/sllw.h
@@ -0,0 +1,2 @@
+require_xpr64;
+RD = sext32(RS1 << (RS2 & 0x1F));
diff --git a/riscv/insns/slt.h b/riscv/insns/slt.h
new file mode 100644
index 0000000..5c50534
--- /dev/null
+++ b/riscv/insns/slt.h
@@ -0,0 +1 @@
+RD = sreg_t(cmp_trunc(RS1)) < sreg_t(cmp_trunc(RS2));
diff --git a/riscv/insns/slti.h b/riscv/insns/slti.h
new file mode 100644
index 0000000..1dcd892
--- /dev/null
+++ b/riscv/insns/slti.h
@@ -0,0 +1 @@
+RD = sreg_t(cmp_trunc(RS1)) < sreg_t(cmp_trunc(SIMM));
diff --git a/riscv/insns/sltiu.h b/riscv/insns/sltiu.h
new file mode 100644
index 0000000..45e579b
--- /dev/null
+++ b/riscv/insns/sltiu.h
@@ -0,0 +1 @@
+RD = cmp_trunc(RS1) < cmp_trunc(SIMM);
diff --git a/riscv/insns/sltu.h b/riscv/insns/sltu.h
new file mode 100644
index 0000000..2c5bdc3
--- /dev/null
+++ b/riscv/insns/sltu.h
@@ -0,0 +1 @@
+RD = cmp_trunc(RS1) < cmp_trunc(RS2);
diff --git a/riscv/insns/sra.h b/riscv/insns/sra.h
new file mode 100644
index 0000000..7102da0
--- /dev/null
+++ b/riscv/insns/sra.h
@@ -0,0 +1 @@
+RD = sext_xprlen(sext_xprlen(RS1) >> (RS2 & (xprlen-1)));
diff --git a/riscv/insns/srai.h b/riscv/insns/srai.h
new file mode 100644
index 0000000..bb17d27
--- /dev/null
+++ b/riscv/insns/srai.h
@@ -0,0 +1,8 @@
+if(xpr64)
+  RD = sreg_t(RS1) >> SHAMT;
+else
+{
+  if(SHAMT & 0x20)
+    throw trap_illegal_instruction;
+  RD = sext32(int32_t(RS1) >> SHAMT);
+}
diff --git a/riscv/insns/sraiw.h b/riscv/insns/sraiw.h
new file mode 100644
index 0000000..4c56730
--- /dev/null
+++ b/riscv/insns/sraiw.h
@@ -0,0 +1,2 @@
+require_xpr64;
+RD = sext32(int32_t(RS1) >> SHAMTW);
diff --git a/riscv/insns/sraw.h b/riscv/insns/sraw.h
new file mode 100644
index 0000000..d178374
--- /dev/null
+++ b/riscv/insns/sraw.h
@@ -0,0 +1,2 @@
+require_xpr64;
+RD = sext32(int32_t(RS1) >> (RS2 & 0x1F));
diff --git a/riscv/insns/srl.h b/riscv/insns/srl.h
new file mode 100644
index 0000000..8230d27
--- /dev/null
+++ b/riscv/insns/srl.h
@@ -0,0 +1,4 @@
+if(xpr64)
+  RD = RS1 >> (RS2 & 0x3F);
+else
+  RD = sext32((uint32_t)RS1 >> (RS2 & 0x1F));
diff --git a/riscv/insns/srli.h b/riscv/insns/srli.h
new file mode 100644
index 0000000..5378fd1
--- /dev/null
+++ b/riscv/insns/srli.h
@@ -0,0 +1,8 @@
+if(xpr64)
+  RD = RS1 >> SHAMT;
+else
+{
+  if(SHAMT & 0x20)
+    throw trap_illegal_instruction;
+  RD = sext32((uint32_t)RS1 >> SHAMT);
+}
diff --git a/riscv/insns/srliw.h b/riscv/insns/srliw.h
new file mode 100644
index 0000000..c400507
--- /dev/null
+++ b/riscv/insns/srliw.h
@@ -0,0 +1,2 @@
+require_xpr64;
+RD = sext32((uint32_t)RS1 >> SHAMTW);
diff --git a/riscv/insns/srlw.h b/riscv/insns/srlw.h
new file mode 100644
index 0000000..b206f7c
--- /dev/null
+++ b/riscv/insns/srlw.h
@@ -0,0 +1,2 @@
+require_xpr64;
+RD = sext32((uint32_t)RS1 >> (RS2 & 0x1F));
diff --git a/riscv/insns/stop.h b/riscv/insns/stop.h
new file mode 100644
index 0000000..791a82c
--- /dev/null
+++ b/riscv/insns/stop.h
@@ -0,0 +1,3 @@
+require_vector;
+utmode = false;
+throw vt_command_stop;
diff --git a/riscv/insns/sub.h b/riscv/insns/sub.h
new file mode 100644
index 0000000..2b1e057
--- /dev/null
+++ b/riscv/insns/sub.h
@@ -0,0 +1 @@
+RD = sext_xprlen(RS1 - RS2);
diff --git a/riscv/insns/subw.h b/riscv/insns/subw.h
new file mode 100644
index 0000000..28db334
--- /dev/null
+++ b/riscv/insns/subw.h
@@ -0,0 +1,3 @@
+require_xpr64;
+RD = sext32(RS1 - RS2);
+
diff --git a/riscv/insns/sw.h b/riscv/insns/sw.h
new file mode 100644
index 0000000..dbe260f
--- /dev/null
+++ b/riscv/insns/sw.h
@@ -0,0 +1 @@
+mmu.store_uint32(RS1+BIMM, RS2);
diff --git a/riscv/insns/syscall.h b/riscv/insns/syscall.h
new file mode 100644
index 0000000..2c7199d
--- /dev/null
+++ b/riscv/insns/syscall.h
@@ -0,0 +1 @@
+throw trap_syscall;
diff --git a/riscv/insns/utidx.h b/riscv/insns/utidx.h
new file mode 100644
index 0000000..b3c944c
--- /dev/null
+++ b/riscv/insns/utidx.h
@@ -0,0 +1,2 @@
+require_vector;
+RD = utidx;
diff --git a/riscv/insns/vf.h b/riscv/insns/vf.h
new file mode 100644
index 0000000..7779645
--- /dev/null
+++ b/riscv/insns/vf.h
@@ -0,0 +1,8 @@
+require_vector;
+for (int i=0; i<VL; i++)
+{
+  uts[i]->pc = RS1+SIMM;
+  uts[i]->utmode = true;
+  while (uts[i]->utmode)
+    uts[i]->step(1, false); // XXX
+}
diff --git a/riscv/insns/vfld.h b/riscv/insns/vfld.h
new file mode 100644
index 0000000..9b40470
--- /dev/null
+++ b/riscv/insns/vfld.h
@@ -0,0 +1,3 @@
+require_vector;
+require_fp;
+VEC_LOAD(FRD, load_int64, 8);
diff --git a/riscv/insns/vflsegd.h b/riscv/insns/vflsegd.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vflsegd.h
diff --git a/riscv/insns/vflsegstd.h b/riscv/insns/vflsegstd.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vflsegstd.h
diff --git a/riscv/insns/vflsegstw.h b/riscv/insns/vflsegstw.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vflsegstw.h
diff --git a/riscv/insns/vflsegw.h b/riscv/insns/vflsegw.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vflsegw.h
diff --git a/riscv/insns/vflstd.h b/riscv/insns/vflstd.h
new file mode 100644
index 0000000..fa9b32d
--- /dev/null
+++ b/riscv/insns/vflstd.h
@@ -0,0 +1,3 @@
+require_vector;
+require_fp;
+VEC_LOAD(FRD, load_int64, RS2);
diff --git a/riscv/insns/vflstw.h b/riscv/insns/vflstw.h
new file mode 100644
index 0000000..716c818
--- /dev/null
+++ b/riscv/insns/vflstw.h
@@ -0,0 +1,3 @@
+require_vector;
+require_fp;
+VEC_LOAD(FRD, load_int32, RS2);
diff --git a/riscv/insns/vflw.h b/riscv/insns/vflw.h
new file mode 100644
index 0000000..75fdd04
--- /dev/null
+++ b/riscv/insns/vflw.h
@@ -0,0 +1,3 @@
+require_vector;
+require_fp;
+VEC_LOAD(FRD, load_int32, 4);
diff --git a/riscv/insns/vfmst.h b/riscv/insns/vfmst.h
new file mode 100644
index 0000000..686d7c5
--- /dev/null
+++ b/riscv/insns/vfmst.h
@@ -0,0 +1,4 @@
+require_vector;
+require_fp;
+assert(0 <= RS2 && RS2 < MAX_UTS);
+UT_FRD(RS2) = FRS1;
diff --git a/riscv/insns/vfmsv.h b/riscv/insns/vfmsv.h
new file mode 100644
index 0000000..a9aa876
--- /dev/null
+++ b/riscv/insns/vfmsv.h
@@ -0,0 +1,5 @@
+require_vector;
+require_fp;
+UT_LOOP_START
+  UT_LOOP_FRD = FRS1;
+UT_LOOP_END
diff --git a/riscv/insns/vfmts.h b/riscv/insns/vfmts.h
new file mode 100644
index 0000000..a6da126
--- /dev/null
+++ b/riscv/insns/vfmts.h
@@ -0,0 +1,4 @@
+require_vector;
+require_fp;
+assert(0 <= RS2 && RS2 < MAX_UTS);
+FRD = UT_FRS1(RS2);
diff --git a/riscv/insns/vfmvv.h b/riscv/insns/vfmvv.h
new file mode 100644
index 0000000..279da21
--- /dev/null
+++ b/riscv/insns/vfmvv.h
@@ -0,0 +1,5 @@
+require_vector;
+require_fp;
+UT_LOOP_START
+  UT_LOOP_FRD = UT_LOOP_FRS1;
+UT_LOOP_END
diff --git a/riscv/insns/vfsd.h b/riscv/insns/vfsd.h
new file mode 100644
index 0000000..f619fc8
--- /dev/null
+++ b/riscv/insns/vfsd.h
@@ -0,0 +1,3 @@
+require_vector;
+require_fp;
+VEC_STORE(FRD, store_uint64, 8);
diff --git a/riscv/insns/vfssegd.h b/riscv/insns/vfssegd.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vfssegd.h
diff --git a/riscv/insns/vfssegstd.h b/riscv/insns/vfssegstd.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vfssegstd.h
diff --git a/riscv/insns/vfssegstw.h b/riscv/insns/vfssegstw.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vfssegstw.h
diff --git a/riscv/insns/vfssegw.h b/riscv/insns/vfssegw.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vfssegw.h
diff --git a/riscv/insns/vfsstd.h b/riscv/insns/vfsstd.h
new file mode 100644
index 0000000..b3bb260
--- /dev/null
+++ b/riscv/insns/vfsstd.h
@@ -0,0 +1,3 @@
+require_vector;
+require_fp;
+VEC_STORE(FRD, store_uint64, RS2);
diff --git a/riscv/insns/vfsstw.h b/riscv/insns/vfsstw.h
new file mode 100644
index 0000000..9cef9b0
--- /dev/null
+++ b/riscv/insns/vfsstw.h
@@ -0,0 +1,3 @@
+require_vector;
+require_fp;
+VEC_STORE(FRD, store_uint32, RS2);
diff --git a/riscv/insns/vfsw.h b/riscv/insns/vfsw.h
new file mode 100644
index 0000000..3fe3d3f
--- /dev/null
+++ b/riscv/insns/vfsw.h
@@ -0,0 +1,3 @@
+require_vector;
+require_fp;
+VEC_STORE(FRD, store_uint32, 4);
diff --git a/riscv/insns/vlb.h b/riscv/insns/vlb.h
new file mode 100644
index 0000000..618380a
--- /dev/null
+++ b/riscv/insns/vlb.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_int8, 1);
diff --git a/riscv/insns/vlbu.h b/riscv/insns/vlbu.h
new file mode 100644
index 0000000..f92c8b5
--- /dev/null
+++ b/riscv/insns/vlbu.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_uint8, 1);
diff --git a/riscv/insns/vld.h b/riscv/insns/vld.h
new file mode 100644
index 0000000..fb7a3c5
--- /dev/null
+++ b/riscv/insns/vld.h
@@ -0,0 +1,3 @@
+require_vector;
+require_xpr64;
+VEC_LOAD(RD, load_int64, 8);
diff --git a/riscv/insns/vlh.h b/riscv/insns/vlh.h
new file mode 100644
index 0000000..269c2a8
--- /dev/null
+++ b/riscv/insns/vlh.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_int16, 2);
diff --git a/riscv/insns/vlhu.h b/riscv/insns/vlhu.h
new file mode 100644
index 0000000..7a2019d
--- /dev/null
+++ b/riscv/insns/vlhu.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_uint16, 2);
diff --git a/riscv/insns/vlsegb.h b/riscv/insns/vlsegb.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegb.h
diff --git a/riscv/insns/vlsegbu.h b/riscv/insns/vlsegbu.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegbu.h
diff --git a/riscv/insns/vlsegd.h b/riscv/insns/vlsegd.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegd.h
diff --git a/riscv/insns/vlsegh.h b/riscv/insns/vlsegh.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegh.h
diff --git a/riscv/insns/vlseghu.h b/riscv/insns/vlseghu.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlseghu.h
diff --git a/riscv/insns/vlsegstb.h b/riscv/insns/vlsegstb.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegstb.h
diff --git a/riscv/insns/vlsegstbu.h b/riscv/insns/vlsegstbu.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegstbu.h
diff --git a/riscv/insns/vlsegstd.h b/riscv/insns/vlsegstd.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegstd.h
diff --git a/riscv/insns/vlsegsth.h b/riscv/insns/vlsegsth.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegsth.h
diff --git a/riscv/insns/vlsegsthu.h b/riscv/insns/vlsegsthu.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegsthu.h
diff --git a/riscv/insns/vlsegstw.h b/riscv/insns/vlsegstw.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegstw.h
diff --git a/riscv/insns/vlsegstwu.h b/riscv/insns/vlsegstwu.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegstwu.h
diff --git a/riscv/insns/vlsegw.h b/riscv/insns/vlsegw.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegw.h
diff --git a/riscv/insns/vlsegwu.h b/riscv/insns/vlsegwu.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vlsegwu.h
diff --git a/riscv/insns/vlstb.h b/riscv/insns/vlstb.h
new file mode 100644
index 0000000..219d90e
--- /dev/null
+++ b/riscv/insns/vlstb.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_int8, RS2);
diff --git a/riscv/insns/vlstbu.h b/riscv/insns/vlstbu.h
new file mode 100644
index 0000000..09faa29
--- /dev/null
+++ b/riscv/insns/vlstbu.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_uint8, RS2);
diff --git a/riscv/insns/vlstd.h b/riscv/insns/vlstd.h
new file mode 100644
index 0000000..5e5de9c
--- /dev/null
+++ b/riscv/insns/vlstd.h
@@ -0,0 +1,3 @@
+require_vector;
+require_xpr64;
+VEC_LOAD(RD, load_int64, RS2);
diff --git a/riscv/insns/vlsth.h b/riscv/insns/vlsth.h
new file mode 100644
index 0000000..af6b5b5
--- /dev/null
+++ b/riscv/insns/vlsth.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_int16, RS2);
diff --git a/riscv/insns/vlsthu.h b/riscv/insns/vlsthu.h
new file mode 100644
index 0000000..0fe8452
--- /dev/null
+++ b/riscv/insns/vlsthu.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_uint16, RS2);
diff --git a/riscv/insns/vlstw.h b/riscv/insns/vlstw.h
new file mode 100644
index 0000000..5375dc0
--- /dev/null
+++ b/riscv/insns/vlstw.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_int32, RS2);
diff --git a/riscv/insns/vlstwu.h b/riscv/insns/vlstwu.h
new file mode 100644
index 0000000..328e23f
--- /dev/null
+++ b/riscv/insns/vlstwu.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_uint32, RS2);
diff --git a/riscv/insns/vlw.h b/riscv/insns/vlw.h
new file mode 100644
index 0000000..6e35911
--- /dev/null
+++ b/riscv/insns/vlw.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_int32, 4);
diff --git a/riscv/insns/vlwu.h b/riscv/insns/vlwu.h
new file mode 100644
index 0000000..4fa1489
--- /dev/null
+++ b/riscv/insns/vlwu.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_LOAD(RD, load_uint32, 4);
diff --git a/riscv/insns/vmst.h b/riscv/insns/vmst.h
new file mode 100644
index 0000000..f4d03d9
--- /dev/null
+++ b/riscv/insns/vmst.h
@@ -0,0 +1,3 @@
+require_vector;
+assert(0 <= RS2 && RS2 < MAX_UTS);
+UT_RD(RS2) = RS1;
diff --git a/riscv/insns/vmsv.h b/riscv/insns/vmsv.h
new file mode 100644
index 0000000..c6f4c2c
--- /dev/null
+++ b/riscv/insns/vmsv.h
@@ -0,0 +1,4 @@
+require_vector;
+UT_LOOP_START
+  UT_LOOP_RD = RS1;
+UT_LOOP_END
diff --git a/riscv/insns/vmts.h b/riscv/insns/vmts.h
new file mode 100644
index 0000000..2d463bc
--- /dev/null
+++ b/riscv/insns/vmts.h
@@ -0,0 +1,3 @@
+require_vector;
+assert(0 <= RS2 && RS2 < MAX_UTS);
+RD = UT_RS1(RS2);
diff --git a/riscv/insns/vmvv.h b/riscv/insns/vmvv.h
new file mode 100644
index 0000000..91d63d4
--- /dev/null
+++ b/riscv/insns/vmvv.h
@@ -0,0 +1,4 @@
+require_vector;
+UT_LOOP_START
+  UT_LOOP_RD = UT_LOOP_RS1;
+UT_LOOP_END
diff --git a/riscv/insns/vsb.h b/riscv/insns/vsb.h
new file mode 100644
index 0000000..c3d5b9d
--- /dev/null
+++ b/riscv/insns/vsb.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_STORE(RD, store_uint8, 1);
diff --git a/riscv/insns/vsd.h b/riscv/insns/vsd.h
new file mode 100644
index 0000000..9c02069
--- /dev/null
+++ b/riscv/insns/vsd.h
@@ -0,0 +1,3 @@
+require_vector;
+require_xpr64;
+VEC_STORE(RD, store_uint64, 8);
diff --git a/riscv/insns/vsetvl.h b/riscv/insns/vsetvl.h
new file mode 100644
index 0000000..c2212ff
--- /dev/null
+++ b/riscv/insns/vsetvl.h
@@ -0,0 +1,3 @@
+require_vector;
+setvl(RS1);
+RD = VL;
diff --git a/riscv/insns/vsh.h b/riscv/insns/vsh.h
new file mode 100644
index 0000000..623eda8
--- /dev/null
+++ b/riscv/insns/vsh.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_STORE(RD, store_uint16, 2);
diff --git a/riscv/insns/vssegb.h b/riscv/insns/vssegb.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vssegb.h
diff --git a/riscv/insns/vssegd.h b/riscv/insns/vssegd.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vssegd.h
diff --git a/riscv/insns/vssegh.h b/riscv/insns/vssegh.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vssegh.h
diff --git a/riscv/insns/vssegstb.h b/riscv/insns/vssegstb.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vssegstb.h
diff --git a/riscv/insns/vssegstd.h b/riscv/insns/vssegstd.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vssegstd.h
diff --git a/riscv/insns/vssegsth.h b/riscv/insns/vssegsth.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vssegsth.h
diff --git a/riscv/insns/vssegstw.h b/riscv/insns/vssegstw.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vssegstw.h
diff --git a/riscv/insns/vssegw.h b/riscv/insns/vssegw.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vssegw.h
diff --git a/riscv/insns/vsstb.h b/riscv/insns/vsstb.h
new file mode 100644
index 0000000..b83cc50
--- /dev/null
+++ b/riscv/insns/vsstb.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_STORE(RD, store_uint8, RS2);
diff --git a/riscv/insns/vsstd.h b/riscv/insns/vsstd.h
new file mode 100644
index 0000000..26868d2
--- /dev/null
+++ b/riscv/insns/vsstd.h
@@ -0,0 +1,3 @@
+require_vector;
+require_xpr64;
+VEC_STORE(RD, store_uint64, RS2);
diff --git a/riscv/insns/vssth.h b/riscv/insns/vssth.h
new file mode 100644
index 0000000..3904331
--- /dev/null
+++ b/riscv/insns/vssth.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_STORE(RD, store_uint16, RS2);
diff --git a/riscv/insns/vsstw.h b/riscv/insns/vsstw.h
new file mode 100644
index 0000000..8f05953
--- /dev/null
+++ b/riscv/insns/vsstw.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_STORE(RD, store_uint32, RS2);
diff --git a/riscv/insns/vsw.h b/riscv/insns/vsw.h
new file mode 100644
index 0000000..662d4e3
--- /dev/null
+++ b/riscv/insns/vsw.h
@@ -0,0 +1,2 @@
+require_vector;
+VEC_STORE(RD, store_uint32, 4);
diff --git a/riscv/insns/vtcfgivl.h b/riscv/insns/vtcfgivl.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/riscv/insns/vtcfgivl.h
diff --git a/riscv/insns/vvcfgivl.h b/riscv/insns/vvcfgivl.h
new file mode 100644
index 0000000..0ded9f8
--- /dev/null
+++ b/riscv/insns/vvcfgivl.h
@@ -0,0 +1,6 @@
+require_vector;
+nxpr_use = SIMM & 0x3f;
+nfpr_use = (SIMM >> 6) & 0x3f;
+vcfg();
+setvl(RS1);
+RD = VL;
diff --git a/riscv/insns/xor.h b/riscv/insns/xor.h
new file mode 100644
index 0000000..49b1783
--- /dev/null
+++ b/riscv/insns/xor.h
@@ -0,0 +1 @@
+RD = RS1 ^ RS2;
diff --git a/riscv/insns/xori.h b/riscv/insns/xori.h
new file mode 100644
index 0000000..5852aac
--- /dev/null
+++ b/riscv/insns/xori.h
@@ -0,0 +1 @@
+RD = SIMM ^ RS1;
diff --git a/riscv/interactive.cc b/riscv/interactive.cc
new file mode 100644
index 0000000..4f7891f
--- /dev/null
+++ b/riscv/interactive.cc
@@ -0,0 +1,256 @@
+#include "sim.h"
+#include "htif.h"
+#include <sys/mman.h>
+#include <map>
+#include <iostream>
+#include <climits>
+#include <assert.h>
+
+void sim_t::interactive()
+{
+  putchar(':');
+  char s[128];
+  std::cin.getline(s,sizeof(s)-1);
+
+  char* p = strtok(s," ");
+  if(!p)
+  {
+    interactive_run_noisy(std::string("r"), std::vector<std::string>(1,"1"));
+    return;
+  }
+  std::string cmd = p;
+
+  std::vector<std::string> args;
+  while((p = strtok(NULL," ")))
+    args.push_back(p);
+
+
+  typedef void (sim_t::*interactive_func)(const std::string&, const std::vector<std::string>&);
+  std::map<std::string,interactive_func> funcs;
+
+  funcs["r"] = &sim_t::interactive_run_noisy;
+  funcs["rs"] = &sim_t::interactive_run_silent;
+  funcs["rp"] = &sim_t::interactive_run_proc_noisy;
+  funcs["rps"] = &sim_t::interactive_run_proc_silent;
+  funcs["reg"] = &sim_t::interactive_reg;
+  funcs["fregs"] = &sim_t::interactive_fregs;
+  funcs["fregd"] = &sim_t::interactive_fregd;
+  funcs["mem"] = &sim_t::interactive_mem;
+  funcs["str"] = &sim_t::interactive_str;
+  funcs["until"] = &sim_t::interactive_until;
+  funcs["while"] = &sim_t::interactive_until;
+  funcs["q"] = &sim_t::interactive_quit;
+
+  try
+  {
+    if(funcs.count(cmd))
+      (this->*funcs[cmd])(cmd, args);
+  }
+  catch(trap_t t) {}
+}
+
+void sim_t::interactive_run_noisy(const std::string& cmd, const std::vector<std::string>& args)
+{
+  interactive_run(cmd,args,true);
+}
+
+void sim_t::interactive_run_silent(const std::string& cmd, const std::vector<std::string>& args)
+{
+  interactive_run(cmd,args,false);
+}
+
+void sim_t::interactive_run(const std::string& cmd, const std::vector<std::string>& args, bool noisy)
+{
+  if(args.size())
+    step_all(atoll(args[0].c_str()),1,noisy);
+  else
+    while(1) step_all(1,1,noisy);
+}
+
+void sim_t::interactive_run_proc_noisy(const std::string& cmd, const std::vector<std::string>& args)
+{
+  interactive_run_proc(cmd,args,true);
+}
+
+void sim_t::interactive_run_proc_silent(const std::string& cmd, const std::vector<std::string>& args)
+{
+  interactive_run_proc(cmd,args,false);
+}
+
+void sim_t::interactive_run_proc(const std::string& cmd, const std::vector<std::string>& a, bool noisy)
+{
+  if(a.size() == 0)
+    return;
+
+  int p = atoi(a[0].c_str());
+  if(p >= (int)num_cores())
+    return;
+
+  if(a.size() == 2)
+    procs[p]->step(atoi(a[1].c_str()),noisy);
+  else
+    while(1) procs[p]->step(1,noisy);
+}
+
+void sim_t::interactive_quit(const std::string& cmd, const std::vector<std::string>& args)
+{
+  stop();
+}
+
+reg_t sim_t::get_pc(const std::vector<std::string>& args)
+{
+  if(args.size() != 1)
+    throw trap_illegal_instruction;
+
+  int p = atoi(args[0].c_str());
+  if(p >= (int)num_cores())
+    throw trap_illegal_instruction;
+
+  return procs[p]->pc;
+}
+
+reg_t sim_t::get_reg(const std::vector<std::string>& args)
+{
+  if(args.size() != 2)
+    throw trap_illegal_instruction;
+
+  int p = atoi(args[0].c_str());
+  int r = atoi(args[1].c_str());
+  if(p >= (int)num_cores() || r >= NXPR)
+    throw trap_illegal_instruction;
+
+  return procs[p]->XPR[r];
+}
+
+reg_t sim_t::get_freg(const std::vector<std::string>& args)
+{
+  if(args.size() != 2)
+    throw trap_illegal_instruction;
+
+  int p = atoi(args[0].c_str());
+  int r = atoi(args[1].c_str());
+  if(p >= (int)num_cores() || r >= NFPR)
+    throw trap_illegal_instruction;
+
+  return procs[p]->FPR[r];
+}
+
+void sim_t::interactive_reg(const std::string& cmd, const std::vector<std::string>& args)
+{
+  printf("0x%016llx\n",(unsigned long long)get_reg(args));
+}
+
+union fpr
+{
+  reg_t r;
+  float s;
+  double d;
+};
+
+void sim_t::interactive_fregs(const std::string& cmd, const std::vector<std::string>& args)
+{
+  fpr f;
+  f.r = get_freg(args);
+  printf("%g\n",f.s);
+}
+
+void sim_t::interactive_fregd(const std::string& cmd, const std::vector<std::string>& args)
+{
+  fpr f;
+  f.r = get_freg(args);
+  printf("%g\n",f.d);
+}
+
+reg_t sim_t::get_mem(const std::vector<std::string>& args)
+{
+  if(args.size() != 1 && args.size() != 2)
+    throw trap_illegal_instruction;
+
+  std::string addr_str = args[0];
+  if(args.size() == 2)
+  {
+    int p = atoi(args[0].c_str());
+    if(p >= (int)num_cores())
+      throw trap_illegal_instruction;
+    mmu->set_vm_enabled(!!(procs[p]->sr & SR_VM));
+    mmu->set_ptbr(procs[p]->mmu.get_ptbr());
+    addr_str = args[1];
+  }
+
+  reg_t addr = strtol(addr_str.c_str(),NULL,16), val;
+  if(addr == LONG_MAX)
+    addr = strtoul(addr_str.c_str(),NULL,16);
+
+  switch(addr % 8)
+  {
+    case 0:
+      val = mmu->load_uint64(addr);
+      break;
+    case 4:
+      val = mmu->load_uint32(addr);
+      break;
+    case 2:
+    case 6:
+      val = mmu->load_uint16(addr);
+      break;
+    default:
+      val = mmu->load_uint8(addr);
+      break;
+  }
+  return val;
+}
+
+void sim_t::interactive_mem(const std::string& cmd, const std::vector<std::string>& args)
+{
+  printf("0x%016llx\n",(unsigned long long)get_mem(args));
+}
+
+void sim_t::interactive_str(const std::string& cmd, const std::vector<std::string>& args)
+{
+  if(args.size() != 1)
+    throw trap_illegal_instruction;
+
+  reg_t addr = strtol(args[0].c_str(),NULL,16);
+
+  char ch;
+  while((ch = mmu->load_uint8(addr++)))
+    putchar(ch);
+
+  putchar('\n');
+}
+
+void sim_t::interactive_until(const std::string& cmd, const std::vector<std::string>& args)
+{
+  if(args.size() < 3)
+    return;
+
+  std::string scmd = args[0];
+  reg_t val = strtol(args[args.size()-1].c_str(),NULL,16);
+  if(val == LONG_MAX)
+    val = strtoul(args[args.size()-1].c_str(),NULL,16);
+  
+  std::vector<std::string> args2;
+  args2 = std::vector<std::string>(args.begin()+1,args.end()-1);
+
+  while(1)
+  {
+    reg_t current;
+    if(scmd == "reg")
+      current = get_reg(args2);
+    else if(scmd == "pc")
+      current = get_pc(args2);
+    else if(scmd == "mem")
+      current = get_mem(args2);
+    else if(scmd == "tohost")
+      current = tohost;
+    else
+      return;
+
+    if(cmd == "until" && current == val)
+      break;
+    if(cmd == "while" && current != val)
+      break;
+
+    step_all(1,1,false);
+  }
+}
diff --git a/riscv/mmu.cc b/riscv/mmu.cc
new file mode 100644
index 0000000..b2c8c98
--- /dev/null
+++ b/riscv/mmu.cc
@@ -0,0 +1,104 @@
+#include "mmu.h"
+#include "sim.h"
+#include "processor.h"
+
+mmu_t::mmu_t(char* _mem, size_t _memsz)
+ : mem(_mem), memsz(_memsz), badvaddr(0),
+   ptbr(0), supervisor(true), vm_enabled(false)
+{
+  flush_tlb();
+}
+
+mmu_t::~mmu_t()
+{
+}
+
+void mmu_t::flush_tlb()
+{
+  memset(tlb_insn_tag, -1, sizeof(tlb_insn_tag));
+  memset(tlb_load_tag, -1, sizeof(tlb_load_tag));
+  memset(tlb_store_tag, -1, sizeof(tlb_store_tag));
+
+  flush_icache();
+}
+
+void mmu_t::flush_icache()
+{
+  memset(icache_tag, -1, sizeof(icache_tag));
+}
+
+void* mmu_t::refill(reg_t addr, bool store, bool fetch)
+{
+  reg_t idx = (addr >> PGSHIFT) % TLB_ENTRIES;
+  reg_t expected_tag = addr & ~(PGSIZE-1);
+
+  reg_t pte = walk(addr);
+
+  reg_t pte_perm = pte & PTE_PERM;
+  if(supervisor) // shift supervisor permission bits into user perm bits
+    pte_perm = (pte_perm/(PTE_SX/PTE_UX)) & PTE_PERM;
+  pte_perm |= pte & PTE_E;
+
+  reg_t perm = (fetch ? PTE_UX : store ? PTE_UW : PTE_UR) | PTE_E;
+  if(unlikely((pte_perm & perm) != perm))
+  {
+    badvaddr = addr;
+    throw store ? trap_store_access_fault
+        : fetch ? trap_instruction_access_fault
+        :         trap_load_access_fault;
+  }
+
+  tlb_load_tag[idx] = (pte_perm & PTE_UR) ? expected_tag : -1;
+  tlb_store_tag[idx] = (pte_perm & PTE_UW) ? expected_tag : -1;
+  tlb_insn_tag[idx] = (pte_perm & PTE_UX) ? expected_tag : -1;
+  tlb_data[idx] = (long)(pte >> PTE_PPN_SHIFT << PGSHIFT) + (long)mem;
+
+  return (void*)(((long)addr & (PGSIZE-1)) | tlb_data[idx]);
+}
+
+pte_t mmu_t::walk(reg_t addr)
+{
+  pte_t pte = 0;
+
+  if(!vm_enabled)
+  {
+    if(addr < memsz)
+      pte = PTE_E | PTE_PERM | ((addr >> PGSHIFT) << PTE_PPN_SHIFT);
+  }
+  else
+  {
+    reg_t base = ptbr;
+    reg_t ptd;
+
+    int ptshift = (LEVELS-1)*PTIDXBITS;
+    for(reg_t i = 0; i < LEVELS; i++, ptshift -= PTIDXBITS)
+    {
+      reg_t idx = (addr >> (PGSHIFT+ptshift)) & ((1<<PTIDXBITS)-1);
+
+      reg_t pte_addr = base + idx*sizeof(pte_t);
+      if(pte_addr >= memsz)
+        break;
+
+      ptd = *(pte_t*)(mem+pte_addr);
+      if(ptd & PTE_E)
+      {
+        // if this PTE is from a larger PT, fake a leaf
+        // PTE so the TLB will work right
+        reg_t vpn = addr >> PGSHIFT;
+        ptd |= (vpn & ((1<<(ptshift))-1)) << PTE_PPN_SHIFT;
+
+        // fault if physical addr is invalid
+        reg_t ppn = ptd >> PTE_PPN_SHIFT;
+        if((ppn << PGSHIFT) + (addr & (PGSIZE-1)) < memsz)
+          pte = ptd;
+        break;
+      }
+      else if(!(ptd & PTE_T))
+        break;
+
+      base = (ptd >> PTE_PPN_SHIFT) << PGSHIFT;
+    }
+  }
+
+  return pte;
+}
diff --git a/riscv/mmu.h b/riscv/mmu.h
new file mode 100644
index 0000000..fb186ee
--- /dev/null
+++ b/riscv/mmu.h
@@ -0,0 +1,191 @@
+#ifndef _RISCV_MMU_H
+#define _RISCV_MMU_H
+
+#include "decode.h"
+#include "trap.h"
+#include "common.h"
+#include "processor.h"
+
+class processor_t;
+
+// virtual memory configuration
+typedef reg_t pte_t;
+const reg_t LEVELS = 4;
+const reg_t PGSHIFT = 12;
+const reg_t PGSIZE = 1 << PGSHIFT;
+const reg_t PTIDXBITS = PGSHIFT - (sizeof(pte_t) == 8 ? 3 : 2);
+const reg_t PPN_BITS = 8*sizeof(reg_t) - PGSHIFT;
+
+// page table entry (PTE) fields
+#define PTE_T    0x001 // Entry is a page Table descriptor
+#define PTE_E    0x002 // Entry is a page table Entry
+#define PTE_R    0x004 // Referenced
+#define PTE_D    0x008 // Dirty
+#define PTE_UX   0x010 // User eXecute permission
+#define PTE_UW   0x020 // User Read permission
+#define PTE_UR   0x040 // User Write permission
+#define PTE_SX   0x080 // Supervisor eXecute permission
+#define PTE_SW   0x100 // Supervisor Read permission
+#define PTE_SR   0x200 // Supervisor Write permission
+#define PTE_PERM (PTE_SR | PTE_SW | PTE_SX | PTE_UR | PTE_UW | PTE_UX)
+#define PTE_PERM_SHIFT 4
+#define PTE_PPN_SHIFT  12 // LSB of physical page number in the PTE
+
+// this class implements a processor's port into the virtual memory system.
+// an MMU and instruction cache are maintained for simulator performance.
+class mmu_t
+{
+public:
+  mmu_t(char* _mem, size_t _memsz);
+  ~mmu_t();
+
+  // template for functions that load an aligned value from memory
+  #define load_func(type) \
+    type##_t load_##type(reg_t addr) { \
+      if(unlikely(addr % sizeof(type##_t))) \
+      { \
+        badvaddr = addr; \
+        throw trap_load_address_misaligned; \
+      } \
+      void* paddr = translate(addr, false, false); \
+      return *(type##_t*)paddr; \
+    }
+
+  // load value from memory at aligned address; zero extend to register width
+  load_func(uint8)
+  load_func(uint16)
+  load_func(uint32)
+  load_func(uint64)
+
+  // load value from memory at aligned address; sign extend to register width
+  load_func(int8)
+  load_func(int16)
+  load_func(int32)
+  load_func(int64)
+
+  // template for functions that store an aligned value to memory
+  #define store_func(type) \
+    void store_##type(reg_t addr, type##_t val) { \
+      if(unlikely(addr % sizeof(type##_t))) \
+      { \
+        badvaddr = addr; \
+        throw trap_store_address_misaligned; \
+      } \
+      void* paddr = translate(addr, true, false); \
+      *(type##_t*)paddr = val; \
+    }
+
+  // store value to memory at aligned address
+  store_func(uint8)
+  store_func(uint16)
+  store_func(uint32)
+  store_func(uint64)
+
+  // load instruction from memory at aligned address.
+  // (needed because instruction alignment requirement is variable
+  // if RVC is supported)
+  // returns the instruction at the specified address, given the current
+  // RVC mode.  func is set to a pointer to a function that knows how to
+  // execute the returned instruction.
+  insn_t __attribute__((always_inline)) load_insn(reg_t addr, bool rvc,
+                                                  insn_func_t* func)
+  {
+    insn_t insn;
+
+    #ifdef RISCV_ENABLE_RVC
+    if(addr % 4 == 2 && rvc) // fetch across word boundary
+    {
+      void* addr_lo = translate(addr, false, true);
+      insn.bits = *(uint16_t*)addr_lo;
+
+      *func = processor_t::dispatch_table
+               [insn.bits % processor_t::DISPATCH_TABLE_SIZE];
+
+      if(!INSN_IS_RVC(insn.bits))
+      {
+        void* addr_hi = translate(addr+2, false, true);
+        insn.bits |= (uint32_t)*(uint16_t*)addr_hi << 16;
+      }
+    }
+    else
+    #endif
+    {
+      reg_t idx = (addr/sizeof(insn_t)) % ICACHE_ENTRIES;
+      insn_t data = icache_data[idx];
+      *func = icache_func[idx];
+      if(likely(icache_tag[idx] == addr))
+        return data;
+
+      // the processor guarantees alignment based upon rvc mode
+      void* paddr = translate(addr, false, true);
+      insn = *(insn_t*)paddr;
+
+      icache_tag[idx] = addr;
+      icache_data[idx] = insn;
+      icache_func[idx] = *func = processor_t::dispatch_table
+                                 [insn.bits % processor_t::DISPATCH_TABLE_SIZE];
+    }
+
+    return insn;
+  }
+
+  // get the virtual address that caused a fault
+  reg_t get_badvaddr() { return badvaddr; }
+
+  // get/set the page table base register
+  reg_t get_ptbr() { return ptbr; }
+  void set_ptbr(reg_t addr) { ptbr = addr & ~(PGSIZE-1); flush_tlb(); }
+
+  // keep the MMU in sync with processor mode
+  void set_supervisor(bool sup) { supervisor = sup; }
+  void set_vm_enabled(bool en) { vm_enabled = en; }
+
+  // flush the TLB and instruction cache
+  void flush_tlb();
+  void flush_icache();
+
+private:
+  char* mem;
+  size_t memsz;
+  reg_t badvaddr;
+
+  reg_t ptbr;
+  bool supervisor;
+  bool vm_enabled;
+
+  // implement a TLB for simulator performance
+  static const reg_t TLB_ENTRIES = 256;
+  long tlb_data[TLB_ENTRIES];
+  reg_t tlb_insn_tag[TLB_ENTRIES];
+  reg_t tlb_load_tag[TLB_ENTRIES];
+  reg_t tlb_store_tag[TLB_ENTRIES];
+
+  // implement an instruction cache for simulator performance
+  static const reg_t ICACHE_ENTRIES = 256;
+  insn_t icache_data[ICACHE_ENTRIES];
+  insn_func_t icache_func[ICACHE_ENTRIES];
+  reg_t icache_tag[ICACHE_ENTRIES];
+
+  // finish translation on a TLB miss and upate the TLB
+  void* refill(reg_t addr, bool store, bool fetch);
+
+  // perform a page table walk for a given virtual address
+  pte_t walk(reg_t addr);
+
+  // translate a virtual address to a physical address
+  void* translate(reg_t addr, bool store, bool fetch)
+  {
+    reg_t idx = (addr >> PGSHIFT) % TLB_ENTRIES;
+
+    reg_t* tlb_tag = fetch ? tlb_insn_tag : store ? tlb_store_tag :tlb_load_tag;
+    reg_t expected_tag = addr & ~(PGSIZE-1);
+    if(likely(tlb_tag[idx] == expected_tag))
+      return (void*)(((long)addr & (PGSIZE-1)) | tlb_data[idx]);
+
+    return refill(addr, store, fetch);
+  }
+  
+  friend class processor_t;
+};
+
+#endif
diff --git a/riscv/opcodes.h b/riscv/opcodes.h
new file mode 100644
index 0000000..b37b833
--- /dev/null
+++ b/riscv/opcodes.h
@@ -0,0 +1,272 @@
+DECLARE_INSN(movn, 0x6f7, 0x1ffff)
+DECLARE_INSN(vfsstw, 0x150f, 0x1ffff)
+DECLARE_INSN(remuw, 0x7bb, 0x1ffff)
+DECLARE_INSN(fmin_d, 0x180d3, 0x1ffff)
+DECLARE_INSN(vlsthu, 0x128b, 0x1ffff)
+DECLARE_INSN(c_swsp, 0x8, 0x1f)
+DECLARE_INSN(bltu, 0x363, 0x3ff)
+DECLARE_INSN(vlsegstwu, 0xb0b, 0xfff)
+DECLARE_INSN(movz, 0x2f7, 0x1ffff)
+DECLARE_INSN(fcvt_lu_s, 0x9053, 0x3ff1ff)
+DECLARE_INSN(fence_l_cv, 0x32f, 0x3ff)
+DECLARE_INSN(fmin_s, 0x18053, 0x1ffff)
+DECLARE_INSN(c_lw0, 0x12, 0x801f)
+DECLARE_INSN(slliw, 0x9b, 0x3f83ff)
+DECLARE_INSN(lb, 0x3, 0x3ff)
+DECLARE_INSN(vlwu, 0x30b, 0x3fffff)
+DECLARE_INSN(fcvt_d_l, 0xc0d3, 0x3ff1ff)
+DECLARE_INSN(lh, 0x83, 0x3ff)
+DECLARE_INSN(fcvt_d_w, 0xe0d3, 0x3ff1ff)
+DECLARE_INSN(lw, 0x103, 0x3ff)
+DECLARE_INSN(add, 0x33, 0x1ffff)
+DECLARE_INSN(fcvt_d_s, 0x100d3, 0x3ff1ff)
+DECLARE_INSN(fence_g_v, 0x2af, 0x3ff)
+DECLARE_INSN(mfpcr, 0x17b, 0x7c1ffff)
+DECLARE_INSN(c_fsd, 0x18, 0x1f)
+DECLARE_INSN(fmax_d, 0x190d3, 0x1ffff)
+DECLARE_INSN(bne, 0xe3, 0x3ff)
+DECLARE_INSN(rdcycle, 0x277, 0x7ffffff)
+DECLARE_INSN(fcvt_s_d, 0x11053, 0x3ff1ff)
+DECLARE_INSN(vlh, 0x8b, 0x3fffff)
+DECLARE_INSN(bgeu, 0x3e3, 0x3ff)
+DECLARE_INSN(vflstd, 0x158b, 0x1ffff)
+DECLARE_INSN(c_li, 0x0, 0x1f)
+DECLARE_INSN(di, 0xfb, 0x7ffffff)
+DECLARE_INSN(sltiu, 0x193, 0x3ff)
+DECLARE_INSN(mtpcr, 0x1fb, 0xf801ffff)
+DECLARE_INSN(vlb, 0xb, 0x3fffff)
+DECLARE_INSN(stop, 0x177, 0xffffffff)
+DECLARE_INSN(vld, 0x18b, 0x3fffff)
+DECLARE_INSN(c_slli, 0x19, 0x1c1f)
+DECLARE_INSN(break, 0xf7, 0xffffffff)
+DECLARE_INSN(cflush, 0x2fb, 0xffffffff)
+DECLARE_INSN(fcvt_s_w, 0xe053, 0x3ff1ff)
+DECLARE_INSN(vflstw, 0x150b, 0x1ffff)
+DECLARE_INSN(mul, 0x433, 0x1ffff)
+DECLARE_INSN(c_lw, 0xa, 0x1f)
+DECLARE_INSN(vlw, 0x10b, 0x3fffff)
+DECLARE_INSN(vssegstw, 0x90f, 0xfff)
+DECLARE_INSN(amominu_d, 0x19ab, 0x1ffff)
+DECLARE_INSN(c_sdsp, 0x6, 0x1f)
+DECLARE_INSN(utidx, 0x1f7, 0x7ffffff)
+DECLARE_INSN(srli, 0x293, 0x3f03ff)
+DECLARE_INSN(c_srli, 0x819, 0x1c1f)
+DECLARE_INSN(c_ldsp, 0x4, 0x1f)
+DECLARE_INSN(c_flw, 0x14, 0x1f)
+DECLARE_INSN(c_srai32, 0x1419, 0x1c1f)
+DECLARE_INSN(amominu_w, 0x192b, 0x1ffff)
+DECLARE_INSN(divuw, 0x6bb, 0x1ffff)
+DECLARE_INSN(mulw, 0x43b, 0x1ffff)
+DECLARE_INSN(vssegstd, 0x98f, 0xfff)
+DECLARE_INSN(srlw, 0x2bb, 0x1ffff)
+DECLARE_INSN(vssegstb, 0x80f, 0xfff)
+DECLARE_INSN(mftx_d, 0x1c0d3, 0x7c1ffff)
+DECLARE_INSN(div, 0x633, 0x1ffff)
+DECLARE_INSN(c_ld, 0x9, 0x1f)
+DECLARE_INSN(mftx_s, 0x1c053, 0x7c1ffff)
+DECLARE_INSN(vssegsth, 0x88f, 0xfff)
+DECLARE_INSN(vvcfgivl, 0xf3, 0x3ff)
+DECLARE_INSN(j, 0x67, 0x7f)
+DECLARE_INSN(ei, 0x7b, 0x7ffffff)
+DECLARE_INSN(fence, 0x12f, 0x3ff)
+DECLARE_INSN(vsw, 0x10f, 0x3fffff)
+DECLARE_INSN(fnmsub_s, 0x4b, 0x1ff)
+DECLARE_INSN(vfssegstd, 0xd8f, 0xfff)
+DECLARE_INSN(fcvt_l_s, 0x8053, 0x3ff1ff)
+DECLARE_INSN(fle_s, 0x17053, 0x1ffff)
+DECLARE_INSN(vsb, 0xf, 0x3fffff)
+DECLARE_INSN(mffsr, 0x1d053, 0x7ffffff)
+DECLARE_INSN(fdiv_s, 0x3053, 0x1f1ff)
+DECLARE_INSN(vlstbu, 0x120b, 0x1ffff)
+DECLARE_INSN(vsetvl, 0x2f3, 0x3fffff)
+DECLARE_INSN(fle_d, 0x170d3, 0x1ffff)
+DECLARE_INSN(fence_i, 0xaf, 0x3ff)
+DECLARE_INSN(vlsegbu, 0x220b, 0x1ffff)
+DECLARE_INSN(fnmsub_d, 0xcb, 0x1ff)
+DECLARE_INSN(addw, 0x3b, 0x1ffff)
+DECLARE_INSN(sll, 0xb3, 0x1ffff)
+DECLARE_INSN(xor, 0x233, 0x1ffff)
+DECLARE_INSN(sub, 0x10033, 0x1ffff)
+DECLARE_INSN(eret, 0x27b, 0xffffffff)
+DECLARE_INSN(blt, 0x263, 0x3ff)
+DECLARE_INSN(vsstw, 0x110f, 0x1ffff)
+DECLARE_INSN(mtfsr, 0x1f053, 0x3fffff)
+DECLARE_INSN(vssth, 0x108f, 0x1ffff)
+DECLARE_INSN(rem, 0x733, 0x1ffff)
+DECLARE_INSN(srliw, 0x29b, 0x3f83ff)
+DECLARE_INSN(lui, 0x37, 0x7f)
+DECLARE_INSN(vsstb, 0x100f, 0x1ffff)
+DECLARE_INSN(fcvt_s_lu, 0xd053, 0x3ff1ff)
+DECLARE_INSN(vsstd, 0x118f, 0x1ffff)
+DECLARE_INSN(addi, 0x13, 0x3ff)
+DECLARE_INSN(vfmst, 0x1173, 0x1ffff)
+DECLARE_INSN(mulh, 0x4b3, 0x1ffff)
+DECLARE_INSN(fmul_s, 0x2053, 0x1f1ff)
+DECLARE_INSN(vlsegsthu, 0xa8b, 0xfff)
+DECLARE_INSN(srai, 0x10293, 0x3f03ff)
+DECLARE_INSN(amoand_d, 0x9ab, 0x1ffff)
+DECLARE_INSN(flt_d, 0x160d3, 0x1ffff)
+DECLARE_INSN(sraw, 0x102bb, 0x1ffff)
+DECLARE_INSN(fmul_d, 0x20d3, 0x1f1ff)
+DECLARE_INSN(ld, 0x183, 0x3ff)
+DECLARE_INSN(ori, 0x313, 0x3ff)
+DECLARE_INSN(flt_s, 0x16053, 0x1ffff)
+DECLARE_INSN(addiw, 0x1b, 0x3ff)
+DECLARE_INSN(amoand_w, 0x92b, 0x1ffff)
+DECLARE_INSN(feq_s, 0x15053, 0x1ffff)
+DECLARE_INSN(fsgnjx_d, 0x70d3, 0x1ffff)
+DECLARE_INSN(sra, 0x102b3, 0x1ffff)
+DECLARE_INSN(c_lwsp, 0x5, 0x1f)
+DECLARE_INSN(bge, 0x2e3, 0x3ff)
+DECLARE_INSN(c_add3, 0x1c, 0x31f)
+DECLARE_INSN(sraiw, 0x1029b, 0x3f83ff)
+DECLARE_INSN(vssegd, 0x218f, 0x1ffff)
+DECLARE_INSN(srl, 0x2b3, 0x1ffff)
+DECLARE_INSN(vfmts, 0x1973, 0x1ffff)
+DECLARE_INSN(fsgnjx_s, 0x7053, 0x1ffff)
+DECLARE_INSN(vfmsv, 0x973, 0x3fffff)
+DECLARE_INSN(feq_d, 0x150d3, 0x1ffff)
+DECLARE_INSN(fcvt_d_wu, 0xf0d3, 0x3ff1ff)
+DECLARE_INSN(vmts, 0x1873, 0x1ffff)
+DECLARE_INSN(or, 0x333, 0x1ffff)
+DECLARE_INSN(rdinstret, 0xa77, 0x7ffffff)
+DECLARE_INSN(fcvt_wu_d, 0xb0d3, 0x3ff1ff)
+DECLARE_INSN(subw, 0x1003b, 0x1ffff)
+DECLARE_INSN(jalr_c, 0x6b, 0x3ff)
+DECLARE_INSN(fmax_s, 0x19053, 0x1ffff)
+DECLARE_INSN(amomaxu_d, 0x1dab, 0x1ffff)
+DECLARE_INSN(c_slliw, 0x1819, 0x1c1f)
+DECLARE_INSN(jalr_j, 0x16b, 0x3ff)
+DECLARE_INSN(c_fld, 0x15, 0x1f)
+DECLARE_INSN(vlstw, 0x110b, 0x1ffff)
+DECLARE_INSN(vlsth, 0x108b, 0x1ffff)
+DECLARE_INSN(xori, 0x213, 0x3ff)
+DECLARE_INSN(jalr_r, 0xeb, 0x3ff)
+DECLARE_INSN(amomaxu_w, 0x1d2b, 0x1ffff)
+DECLARE_INSN(fcvt_wu_s, 0xb053, 0x3ff1ff)
+DECLARE_INSN(vlstb, 0x100b, 0x1ffff)
+DECLARE_INSN(vlstd, 0x118b, 0x1ffff)
+DECLARE_INSN(c_ld0, 0x8012, 0x801f)
+DECLARE_INSN(rdtime, 0x677, 0x7ffffff)
+DECLARE_INSN(andi, 0x393, 0x3ff)
+DECLARE_INSN(c_srli32, 0xc19, 0x1c1f)
+DECLARE_INSN(fsgnjn_d, 0x60d3, 0x1ffff)
+DECLARE_INSN(fnmadd_s, 0x4f, 0x1ff)
+DECLARE_INSN(jal, 0x6f, 0x7f)
+DECLARE_INSN(lwu, 0x303, 0x3ff)
+DECLARE_INSN(vlsegstbu, 0xa0b, 0xfff)
+DECLARE_INSN(c_beq, 0x10, 0x1f)
+DECLARE_INSN(vlhu, 0x28b, 0x3fffff)
+DECLARE_INSN(vfsstd, 0x158f, 0x1ffff)
+DECLARE_INSN(c_bne, 0x11, 0x1f)
+DECLARE_INSN(fnmadd_d, 0xcf, 0x1ff)
+DECLARE_INSN(fence_g_cv, 0x3af, 0x3ff)
+DECLARE_INSN(amoadd_d, 0x1ab, 0x1ffff)
+DECLARE_INSN(c_sw, 0xd, 0x1f)
+DECLARE_INSN(amomax_w, 0x152b, 0x1ffff)
+DECLARE_INSN(c_move, 0x2, 0x801f)
+DECLARE_INSN(fmovn, 0xef7, 0x1ffff)
+DECLARE_INSN(c_fsw, 0x16, 0x1f)
+DECLARE_INSN(c_j, 0x8002, 0x801f)
+DECLARE_INSN(mulhsu, 0x533, 0x1ffff)
+DECLARE_INSN(c_sd, 0xc, 0x1f)
+DECLARE_INSN(amoadd_w, 0x12b, 0x1ffff)
+DECLARE_INSN(fcvt_d_lu, 0xd0d3, 0x3ff1ff)
+DECLARE_INSN(amomax_d, 0x15ab, 0x1ffff)
+DECLARE_INSN(fcvt_w_d, 0xa0d3, 0x3ff1ff)
+DECLARE_INSN(fmovz, 0xaf7, 0x1ffff)
+DECLARE_INSN(c_or3, 0x21c, 0x31f)
+DECLARE_INSN(vmvv, 0x73, 0x3fffff)
+DECLARE_INSN(vfssegstw, 0xd0f, 0xfff)
+DECLARE_INSN(slt, 0x133, 0x1ffff)
+DECLARE_INSN(mxtf_d, 0x1e0d3, 0x3fffff)
+DECLARE_INSN(sllw, 0xbb, 0x1ffff)
+DECLARE_INSN(amoor_d, 0xdab, 0x1ffff)
+DECLARE_INSN(slti, 0x113, 0x3ff)
+DECLARE_INSN(remu, 0x7b3, 0x1ffff)
+DECLARE_INSN(flw, 0x107, 0x3ff)
+DECLARE_INSN(remw, 0x73b, 0x1ffff)
+DECLARE_INSN(sltu, 0x1b3, 0x1ffff)
+DECLARE_INSN(slli, 0x93, 0x3f03ff)
+DECLARE_INSN(c_and3, 0x31c, 0x31f)
+DECLARE_INSN(vssegw, 0x210f, 0x1ffff)
+DECLARE_INSN(amoor_w, 0xd2b, 0x1ffff)
+DECLARE_INSN(vsd, 0x18f, 0x3fffff)
+DECLARE_INSN(beq, 0x63, 0x3ff)
+DECLARE_INSN(fld, 0x187, 0x3ff)
+DECLARE_INSN(mxtf_s, 0x1e053, 0x3fffff)
+DECLARE_INSN(fsub_s, 0x1053, 0x1f1ff)
+DECLARE_INSN(and, 0x3b3, 0x1ffff)
+DECLARE_INSN(vtcfgivl, 0x1f3, 0x3ff)
+DECLARE_INSN(lbu, 0x203, 0x3ff)
+DECLARE_INSN(vf, 0x3f3, 0xf80003ff)
+DECLARE_INSN(vlsegstw, 0x90b, 0xfff)
+DECLARE_INSN(syscall, 0x77, 0xffffffff)
+DECLARE_INSN(fsgnj_s, 0x5053, 0x1ffff)
+DECLARE_INSN(c_addi, 0x1, 0x1f)
+DECLARE_INSN(vfmvv, 0x173, 0x3fffff)
+DECLARE_INSN(vlstwu, 0x130b, 0x1ffff)
+DECLARE_INSN(c_sub3, 0x11c, 0x31f)
+DECLARE_INSN(vsh, 0x8f, 0x3fffff)
+DECLARE_INSN(vlsegstb, 0x80b, 0xfff)
+DECLARE_INSN(vlsegstd, 0x98b, 0xfff)
+DECLARE_INSN(vflsegd, 0x258b, 0x1ffff)
+DECLARE_INSN(vflsegw, 0x250b, 0x1ffff)
+DECLARE_INSN(vlsegsth, 0x88b, 0xfff)
+DECLARE_INSN(fsgnj_d, 0x50d3, 0x1ffff)
+DECLARE_INSN(vflsegstw, 0xd0b, 0xfff)
+DECLARE_INSN(c_sub, 0x801a, 0x801f)
+DECLARE_INSN(mulhu, 0x5b3, 0x1ffff)
+DECLARE_INSN(fcvt_l_d, 0x80d3, 0x3ff1ff)
+DECLARE_INSN(vmsv, 0x873, 0x3fffff)
+DECLARE_INSN(vmst, 0x1073, 0x1ffff)
+DECLARE_INSN(fadd_d, 0xd3, 0x1f1ff)
+DECLARE_INSN(fcvt_s_wu, 0xf053, 0x3ff1ff)
+DECLARE_INSN(rdnpc, 0x26b, 0x7ffffff)
+DECLARE_INSN(fcvt_s_l, 0xc053, 0x3ff1ff)
+DECLARE_INSN(vflsegstd, 0xd8b, 0xfff)
+DECLARE_INSN(c_add, 0x1a, 0x801f)
+DECLARE_INSN(fcvt_lu_d, 0x90d3, 0x3ff1ff)
+DECLARE_INSN(vfld, 0x58b, 0x3fffff)
+DECLARE_INSN(fsub_d, 0x10d3, 0x1f1ff)
+DECLARE_INSN(fmadd_s, 0x43, 0x1ff)
+DECLARE_INSN(fcvt_w_s, 0xa053, 0x3ff1ff)
+DECLARE_INSN(vssegh, 0x208f, 0x1ffff)
+DECLARE_INSN(fsqrt_s, 0x4053, 0x3ff1ff)
+DECLARE_INSN(c_srai, 0x1019, 0x1c1f)
+DECLARE_INSN(amomin_w, 0x112b, 0x1ffff)
+DECLARE_INSN(fsgnjn_s, 0x6053, 0x1ffff)
+DECLARE_INSN(c_slli32, 0x419, 0x1c1f)
+DECLARE_INSN(vlsegwu, 0x230b, 0x1ffff)
+DECLARE_INSN(vfsw, 0x50f, 0x3fffff)
+DECLARE_INSN(amoswap_d, 0x5ab, 0x1ffff)
+DECLARE_INSN(fence_l_v, 0x22f, 0x3ff)
+DECLARE_INSN(fsqrt_d, 0x40d3, 0x3ff1ff)
+DECLARE_INSN(vflw, 0x50b, 0x3fffff)
+DECLARE_INSN(fdiv_d, 0x30d3, 0x1f1ff)
+DECLARE_INSN(fmadd_d, 0xc3, 0x1ff)
+DECLARE_INSN(divw, 0x63b, 0x1ffff)
+DECLARE_INSN(amomin_d, 0x11ab, 0x1ffff)
+DECLARE_INSN(divu, 0x6b3, 0x1ffff)
+DECLARE_INSN(amoswap_w, 0x52b, 0x1ffff)
+DECLARE_INSN(vfsd, 0x58f, 0x3fffff)
+DECLARE_INSN(fadd_s, 0x53, 0x1f1ff)
+DECLARE_INSN(vlsegb, 0x200b, 0x1ffff)
+DECLARE_INSN(fsd, 0x1a7, 0x3ff)
+DECLARE_INSN(vlsegd, 0x218b, 0x1ffff)
+DECLARE_INSN(vlsegh, 0x208b, 0x1ffff)
+DECLARE_INSN(sw, 0x123, 0x3ff)
+DECLARE_INSN(fmsub_s, 0x47, 0x1ff)
+DECLARE_INSN(vfssegw, 0x250f, 0x1ffff)
+DECLARE_INSN(c_addiw, 0x1d, 0x1f)
+DECLARE_INSN(lhu, 0x283, 0x3ff)
+DECLARE_INSN(sh, 0xa3, 0x3ff)
+DECLARE_INSN(vlsegw, 0x210b, 0x1ffff)
+DECLARE_INSN(fsw, 0x127, 0x3ff)
+DECLARE_INSN(vlbu, 0x20b, 0x3fffff)
+DECLARE_INSN(sb, 0x23, 0x3ff)
+DECLARE_INSN(fmsub_d, 0xc7, 0x1ff)
+DECLARE_INSN(vlseghu, 0x228b, 0x1ffff)
+DECLARE_INSN(vssegb, 0x200f, 0x1ffff)
+DECLARE_INSN(vfssegd, 0x258f, 0x1ffff)
+DECLARE_INSN(sd, 0x1a3, 0x3ff)
diff --git a/riscv/processor.cc b/riscv/processor.cc
new file mode 100644
index 0000000..2a53cca
--- /dev/null
+++ b/riscv/processor.cc
@@ -0,0 +1,240 @@
+#include "processor.h"
+#include "common.h"
+#include "config.h"
+#include "sim.h"
+#include <bfd.h>
+#include <dis-asm.h>
+#include <cmath>
+#include <cstdlib>
+#include <iostream>
+#include <assert.h>
+
+processor_t::processor_t(sim_t* _sim, mmu_t* _mmu, uint32_t _id)
+  : sim(*_sim), mmu(*_mmu), id(_id), utidx(0)
+{
+  reset();
+
+  // create microthreads
+  for (int i=0; i<MAX_UTS; i++)
+    uts[i] = new processor_t(&sim, &mmu, id, i);
+}
+
+processor_t::processor_t(sim_t* _sim, mmu_t* _mmu, uint32_t _id,
+                         uint32_t _utidx)
+  : sim(*_sim), mmu(*_mmu), id(_id), utidx(_utidx)
+{
+  reset();
+  set_sr(sr | SR_EF | SR_EV);
+
+  // microthreads don't possess their own microthreads
+  for (int i=0; i<MAX_UTS; i++)
+    uts[i] = NULL;
+}
+
+processor_t::~processor_t()
+{
+}
+
+void processor_t::reset()
+{
+  run = false;
+
+  // the ISA guarantees the following initial state
+  set_sr(SR_S | SR_SX);
+  pc = 0;
+
+  // the following state is undefined upon boot-up,
+  // but we zero it for determinism
+  memset(XPR,0,sizeof(XPR));
+  memset(FPR,0,sizeof(FPR));
+
+  evec = 0;
+  epc = 0;
+  badvaddr = 0;
+  cause = 0;
+  pcr_k0 = 0;
+  pcr_k1 = 0;
+  count = 0;
+  compare = 0;
+  cycle = 0;
+  set_fsr(0);
+
+  // vector stuff
+  vecbanks = 0xff;
+  vecbanks_count = 8;
+  utidx = -1;
+  vlmax = 32;
+  vl = 0;
+  nxfpr_bank = 256;
+  nxpr_use = 32;
+  nfpr_use = 32;
+}
+
+void processor_t::set_sr(uint32_t val)
+{
+  sr = val & ~SR_ZERO; // clear SR bits that read as zero
+
+#ifndef RISCV_ENABLE_64BIT
+  sr &= ~(SR_SX | SR_UX); // SX=UX=0 for RV32 implementations
+#endif
+#ifndef RISCV_ENABLE_FPU
+  sr &= ~SR_EF;
+#endif
+#ifndef RISCV_ENABLE_RVC
+  sr &= ~SR_EC;
+#endif
+#ifndef RISCV_ENABLE_VEC
+  sr &= ~SR_EV;
+#endif
+
+  // update MMU state and flush TLB
+  mmu.set_vm_enabled(sr & SR_VM);
+  mmu.set_supervisor(sr & SR_S);
+  mmu.flush_tlb();
+
+  // set the fixed-point register length
+  xprlen = ((sr & SR_S) ? (sr & SR_SX) : (sr & SR_UX)) ? 64 : 32;
+}
+
+void processor_t::set_fsr(uint32_t val)
+{
+  fsr = val & ~FSR_ZERO; // clear FSR bits that read as zero
+}
+
+void processor_t::vcfg()
+{
+  if (nxpr_use + nfpr_use < 2)
+    vlmax = nxfpr_bank * vecbanks_count;
+  else
+    vlmax = (nxfpr_bank / (nxpr_use + nfpr_use - 1)) * vecbanks_count;
+
+  vlmax = std::min(vlmax, MAX_UTS);
+}
+
+void processor_t::setvl(int vlapp)
+{
+  vl = std::min(vlmax, vlapp);
+}
+
+void processor_t::take_interrupt()
+{
+  uint32_t interrupts = (cause & CAUSE_IP) >> CAUSE_IP_SHIFT;
+  interrupts &= (sr & SR_IM) >> SR_IM_SHIFT;
+
+  if(interrupts && (sr & SR_ET))
+    throw trap_interrupt;
+}
+
+void processor_t::step(size_t n, bool noisy)
+{
+  if(!run)
+    return;
+
+  size_t i = 0;
+  while(1) try
+  {
+    take_interrupt();
+
+    mmu_t& _mmu = mmu;
+    insn_t insn;
+    insn_func_t func;
+    reg_t npc = pc;
+
+    // execute_insn fetches and executes one instruction
+    #define execute_insn(noisy) \
+      do { \
+        insn = _mmu.load_insn(npc, sr & SR_EC, &func); \
+        if(noisy) disasm(insn,pc); \
+        npc = func(this, insn, npc); \
+        pc = npc; \
+      } while(0)
+
+    if(noisy) for( ; i < n; i++) // print out instructions as we go
+      execute_insn(true);
+    else 
+    {
+      // unrolled for speed
+      for( ; n > 3 && i < n-3; i+=4)
+      {
+        execute_insn(false);
+        execute_insn(false);
+        execute_insn(false);
+        execute_insn(false);
+      }
+      for( ; i < n; i++)
+        execute_insn(false);
+    }
+
+    break;
+  }
+  catch(trap_t t)
+  {
+    // an exception occurred in the target processor
+    i++;
+    take_trap(t,noisy);
+  }
+  catch(vt_command_t cmd)
+  {
+    // this microthread has finished
+    i++;
+    assert(cmd == vt_command_stop);
+    break;
+  }
+  catch(halt_t t)
+  {
+    // sleep until IPI
+    reset();
+    return;
+  }
+
+  cycle += i;
+
+  // update timer and possibly register a timer interrupt
+  uint32_t old_count = count;
+  count += i;
+  if(old_count < compare && uint64_t(old_count) + i >= compare)
+    cause |= 1 << (TIMER_IRQ+CAUSE_IP_SHIFT);
+}
+
+void processor_t::take_trap(trap_t t, bool noisy)
+{
+  if(noisy)
+    printf("core %3d: trap %s, pc 0x%016llx\n",
+           id, trap_name(t), (unsigned long long)pc);
+
+  // switch to supervisor, set previous supervisor bit, disable traps
+  set_sr((((sr & ~SR_ET) | SR_S) & ~SR_PS) | ((sr & SR_S) ? SR_PS : 0));
+  cause = (cause & ~CAUSE_EXCCODE) | (t << CAUSE_EXCCODE_SHIFT);
+  epc = pc;
+  pc = evec;
+  badvaddr = mmu.get_badvaddr();
+}
+
+void processor_t::deliver_ipi()
+{
+  cause |= 1 << (IPI_IRQ+CAUSE_IP_SHIFT);
+  run = true;
+}
+
+void processor_t::disasm(insn_t insn, reg_t pc)
+{
+  printf("core %3d: 0x%016llx (0x%08x) ",id,(unsigned long long)pc,insn.bits);
+
+  #ifdef RISCV_HAVE_LIBOPCODES
+  disassemble_info info;
+  INIT_DISASSEMBLE_INFO(info, stdout, fprintf);
+  info.flavour = bfd_target_unknown_flavour;
+  info.arch = bfd_arch_mips;
+  info.mach = 101; // XXX bfd_mach_mips_riscv requires modified bfd.h
+  info.endian = BFD_ENDIAN_LITTLE;
+  info.buffer = (bfd_byte*)&insn;
+  info.buffer_length = sizeof(insn);
+  info.buffer_vma = pc;
+
+  int ret = print_insn_little_mips(pc, &info);
+  assert(ret == insn_length(insn.bits));
+  #else
+  printf("unknown");
+  #endif
+  printf("\n");
+}
diff --git a/riscv/processor.h b/riscv/processor.h
new file mode 100644
index 0000000..3bc1177
--- /dev/null
+++ b/riscv/processor.h
@@ -0,0 +1,89 @@
+#ifndef _RISCV_PROCESSOR_H
+#define _RISCV_PROCESSOR_H
+
+#include "decode.h"
+#include <cstring>
+#include "trap.h"
+
+#define MAX_UTS 2048
+
+class processor_t;
+class mmu_t;
+typedef reg_t (*insn_func_t)(processor_t*, insn_t, reg_t);
+class sim_t;
+
+// this class represents one processor in a RISC-V machine.
+class processor_t
+{
+public:
+  processor_t(sim_t* _sim, mmu_t* _mmu, uint32_t _id);
+  ~processor_t();
+
+  void step(size_t n, bool noisy); // run for n cycles
+  void deliver_ipi(); // register an interprocessor interrupt
+
+private:
+  sim_t& sim;
+  mmu_t& mmu; // main memory is always accessed via the mmu
+
+  // user-visible architected state
+  reg_t XPR[NXPR];
+  freg_t FPR[NFPR];
+  reg_t pc;
+  uint32_t fsr;
+
+  // counters
+  reg_t cycle;
+
+  // privileged control registers
+  reg_t epc;
+  reg_t badvaddr;
+  reg_t cause;
+  reg_t evec;
+  reg_t pcr_k0;
+  reg_t pcr_k1;
+  uint32_t id;
+  uint32_t sr; // only modify the status register using set_sr()
+  uint32_t count;
+  uint32_t compare;
+
+  // # of bits in an XPR (32 or 64). (redundant with sr)
+  int xprlen;
+
+  // is this processor running? (deliver_ipi() sets this)
+  bool run;
+
+  // functions
+  void reset(); // resets architected state; halts processor if it was running
+  void take_interrupt(); // take a trap if any interrupts are pending
+  void set_sr(uint32_t val); // set the status register
+  void set_fsr(uint32_t val); // set the floating-point status register
+  void take_trap(trap_t t, bool noisy); // take an exception
+  void disasm(insn_t insn, reg_t pc); // disassemble and print an instruction
+
+  // vector stuff
+  void vcfg();
+  void setvl(int vlapp);
+
+  reg_t vecbanks;
+  uint32_t vecbanks_count;
+
+  bool utmode;
+  uint32_t utidx;
+  int vlmax;
+  int vl;
+  int nxfpr_bank;
+  int nxpr_use;
+  int nfpr_use;
+  processor_t* uts[MAX_UTS];
+
+  // this constructor is used for each of the uts
+  processor_t(sim_t* _sim, mmu_t* _mmu, uint32_t _id, uint32_t _utidx);
+
+  friend class sim_t;
+  friend class mmu_t;
+
+  #include "dispatch.h"
+};
+
+#endif
diff --git a/riscv/riscv-isa-run.cc b/riscv/riscv-isa-run.cc
new file mode 100644
index 0000000..a0af8de
--- /dev/null
+++ b/riscv/riscv-isa-run.cc
@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include "sim.h"
+#include "htif.h"
+
+static void help()
+{
+  fprintf(stderr, "usage: riscv-isa-run -f <fd> -t <fd> [additional options]\n");
+  fprintf(stderr, "Options:\n");
+  fprintf(stderr, "  -f <fd>    From-host pipe file descriptor\n");
+  fprintf(stderr, "  -t <fd>    To-host pipe file descriptor\n");
+  fprintf(stderr, "  -p <n>     Simulate <n> processors\n");
+  fprintf(stderr, "  -d         Interactive debug mode\n");
+  exit(1);
+}
+
+int main(int argc, char** argv)
+{
+  bool debug = false;
+  int nprocs = 1;
+  int fromhost_fd = -1, tohost_fd = -1;
+
+  // parse command-line arguments
+  for(int c; (c = getopt(argc,argv,"hdp:f:t:")) != -1; )
+  {
+    switch(c)
+    {
+      case 'd':
+        debug = true;
+        break;
+      case 'p':
+        nprocs = atoi(optarg);
+        break;
+      case 'f':
+        fromhost_fd = atoi(optarg);
+        break;
+      case 't':
+        tohost_fd = atoi(optarg);
+        break;
+      default:
+        fprintf(stderr, "unknown option: -%c", optopt);
+      case 'h':
+        help();
+    }
+  }
+
+  // we require -f and -t to be specified so we can communicate with the host
+  if(fromhost_fd == -1 || tohost_fd == -1)
+    help();
+
+  // initialize host-target interface
+  htif_t htif(tohost_fd, fromhost_fd);
+
+  // initalize simulator and run to completion
+  sim_t s(nprocs, &htif);
+  s.run(debug);
+}
diff --git a/riscv/riscv.ac b/riscv/riscv.ac
new file mode 100644
index 0000000..5766d6d
--- /dev/null
+++ b/riscv/riscv.ac
@@ -0,0 +1,32 @@
+AC_ARG_ENABLE([fpu], AS_HELP_STRING([--disable-fpu], [Disable floating-point]))
+AS_IF([test "x$enable_fpu" != "xno"], [
+  AC_DEFINE([RISCV_ENABLE_FPU],,[Define if floating-point instructions are supported])
+])
+
+AC_ARG_ENABLE([64bit], AS_HELP_STRING([--disable-64bit], [Disable 64-bit mode]))
+AS_IF([test "x$enable_64bit" != "xno"], [
+  AC_DEFINE([RISCV_ENABLE_64BIT],,[Define if 64-bit mode is supported])
+])
+
+AC_ARG_ENABLE([rvc], AS_HELP_STRING([--enable-rvc], [Enable instruction compression]))
+AS_IF([test "x$enable_rvc" = "xyes"], [
+  AC_DEFINE([RISCV_ENABLE_RVC],,[Define if instruction compression is supported])
+])
+
+AC_ARG_ENABLE([vec], AS_HELP_STRING([--disable-vec], [Disable vector processor]))
+AS_IF([test "x$enable_vec" != "xno"], [
+  AC_DEFINE([RISCV_ENABLE_VEC],,[Define if vector processor is supported])
+])
+
+libopc=`dirname \`which riscv-gcc\``/../`$ac_config_guess`/riscv/lib/libopcodes.a
+AC_CHECK_FILES([$libopc],[have_libopcodes="yes"],[have_libopcodes="no"])
+
+AC_SEARCH_LIBS([bfd_init],[bfd],[],[have_libopcodes="no"])
+
+AS_IF([test "$have_libopcodes" = "no"],[
+  AC_MSG_WARN([Could not find opcodes library])
+  AC_MSG_WARN([Build will not include disassembly support])
+],[
+  LIBS="$libopc $LIBS"
+  AC_DEFINE([RISCV_HAVE_LIBOPCODES],,[Define if libopcodes exists])
+])
diff --git a/riscv/riscv.mk.in b/riscv/riscv.mk.in
new file mode 100644
index 0000000..50dc76a
--- /dev/null
+++ b/riscv/riscv.mk.in
@@ -0,0 +1,50 @@
+riscv_subproject_deps = \
+	softfloat_riscv \
+	softfloat \
+
+riscv_hdrs = \
+	htif.h \
+	common.h \
+	decode.h \
+	mmu.h \
+	processor.h \
+	sim.h \
+	trap.h \
+	opcodes.h \
+	insn_header.h \
+	dispatch.h \
+
+NDISPATCH := 10
+DISPATCH_SRCS := \
+	dispatch0.cc \
+	dispatch1.cc \
+	dispatch2.cc \
+	dispatch3.cc \
+	dispatch4.cc \
+	dispatch5.cc \
+	dispatch6.cc \
+	dispatch7.cc \
+	dispatch8.cc \
+	dispatch9.cc \
+	dispatch10.cc \
+
+$(DISPATCH_SRCS): %.cc: dispatch $(wildcard insns/*.h) $(riscv_hdrs)
+	$< $(subst dispatch,,$(subst .cc,,$@)) $(NDISPATCH) 1024 < $(src_dir)/riscv/opcodes.h > $@
+
+$(src_dir)/riscv/dispatch.h: %.h: dispatch
+	$< $(NDISPATCH) 1024 < $(src_dir)/riscv/opcodes.h > $@
+
+riscv_srcs = \
+	htif.cc \
+	processor.cc \
+	sim.cc \
+	interactive.cc \
+	trap.cc \
+	icsim.cc \
+	mmu.cc \
+	$(DISPATCH_SRCS) \
+
+riscv_test_srcs =
+
+riscv_install_prog_srcs = \
+	riscv-isa-run.cc \
diff --git a/riscv/sim.cc b/riscv/sim.cc
new file mode 100644
index 0000000..85d0995
--- /dev/null
+++ b/riscv/sim.cc
@@ -0,0 +1,92 @@
+#include "sim.h"
+#include "htif.h"
+#include <sys/mman.h>
+#include <map>
+#include <iostream>
+#include <climits>
+#include <assert.h>
+
+sim_t::sim_t(int _nprocs, htif_t* _htif)
+  : htif(_htif),
+    procs(_nprocs),
+    running(false)
+{
+  // allocate target machine's memory, shrinking it as necessary
+  // until the allocation succeeds
+
+  size_t memsz0 = sizeof(size_t) == 8 ? 0x100000000ULL : 0x70000000UL;
+  size_t quantum = std::max(PGSIZE, (reg_t)sysconf(_SC_PAGESIZE));
+  memsz0 = memsz0/quantum*quantum;
+
+  memsz = memsz0;
+  mem = (char*)mmap64(NULL, memsz, PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
+
+  if(mem == MAP_FAILED)
+  {
+    while(mem == MAP_FAILED && (memsz = memsz*10/11/quantum*quantum))
+      mem = (char*)mmap64(NULL, memsz, PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
+    assert(mem != MAP_FAILED);
+    fprintf(stderr, "warning: only got %lu bytes of target mem (wanted %lu)\n",
+            (unsigned long)memsz, (unsigned long)memsz0);
+  }
+
+  mmu = new mmu_t(mem, memsz);
+
+  for(size_t i = 0; i < num_cores(); i++)
+    procs[i] = new processor_t(this, new mmu_t(mem, memsz), i);
+
+  htif->init(this);
+}
+
+sim_t::~sim_t()
+{
+  for(size_t i = 0; i < num_cores(); i++)
+  {
+    mmu_t* pmmu = &procs[i]->mmu;
+    delete procs[i];
+    delete pmmu;
+  }
+  delete mmu;
+  munmap(mem, memsz);
+}
+
+void sim_t::set_tohost(reg_t val)
+{
+  fromhost = 0;
+  tohost = val;
+}
+
+reg_t sim_t::get_fromhost()
+{
+  htif->wait_for_fromhost_write();
+  return fromhost;
+}
+
+void sim_t::send_ipi(reg_t who)
+{
+  if(who < num_cores())
+    procs[who]->deliver_ipi();
+}
+
+void sim_t::run(bool debug)
+{
+  htif->wait_for_start();
+
+  // start core 0
+  send_ipi(0);
+
+  for(running = true; running; )
+  {
+    if(!debug)
+      step_all(100,100,false);
+    else
+      interactive();
+  }
+}
+
+void sim_t::step_all(size_t n, size_t interleave, bool noisy)
+{
+  for(size_t j = 0; j < n; j+=interleave)
+    for(int i = 0; i < (int)num_cores(); i++)
+      procs[i]->step(interleave,noisy);
+}
diff --git a/riscv/sim.h b/riscv/sim.h
new file mode 100644
index 0000000..c4058d3
--- /dev/null
+++ b/riscv/sim.h
@@ -0,0 +1,82 @@
+#ifndef _RISCV_SIM_H
+#define _RISCV_SIM_H
+
+#include <vector>
+#include <string>
+#include "processor.h"
+#include "mmu.h"
+
+class htif_t;
+
+// this class encapsulates the processors and memory in a RISC-V machine.
+class sim_t
+{
+public:
+  sim_t(int _nprocs, htif_t* _htif);
+  ~sim_t();
+
+  // run the simulation to completion
+  void run(bool debug);
+
+  // communicate with the host machine
+  void set_tohost(reg_t val);
+  reg_t get_fromhost();
+
+  // deliver an IPI to a specific processor
+  void send_ipi(reg_t who);
+
+  // returns the number of processors in this simulator
+  size_t num_cores() { return procs.size(); }
+
+private:
+  htif_t* htif;
+
+  // global registers for communication with host machine
+  reg_t tohost;
+  reg_t fromhost;
+
+  // main memory, shared between processors
+  char* mem;
+  size_t memsz; // memory size in bytes
+  mmu_t* mmu; // debug port into main memory
+
+  // processors
+  std::vector<processor_t*> procs;
+
+  // terminate the simulation loop after the current iteration
+  void stop() { running = false; }
+  bool running;
+
+  // run each processor for n instructions; interleave instructions are
+  // run on a processor before moving on to the next processor.
+  // interleave must divide n.
+  // if noisy, print out the instructions as they execute.
+  void step_all(size_t n, size_t interleave, bool noisy);
+
+  // presents a prompt for introspection into the simulation
+  void interactive();
+
+  // functions that help implement interactive()
+  void interactive_quit(const std::string& cmd, const std::vector<std::string>& args);
+  void interactive_run(const std::string& cmd, const std::vector<std::string>& args, bool noisy);
+  void interactive_run_noisy(const std::string& cmd, const std::vector<std::string>& args);
+  void interactive_run_silent(const std::string& cmd, const std::vector<std::string>& args);
+  void interactive_run_proc(const std::string& cmd, const std::vector<std::string>& args, bool noisy);
+  void interactive_run_proc_noisy(const std::string& cmd, const std::vector<std::string>& args);
+  void interactive_run_proc_silent(const std::string& cmd, const std::vector<std::string>& args);
+  void interactive_reg(const std::string& cmd, const std::vector<std::string>& args);
+  void interactive_fregs(const std::string& cmd, const std::vector<std::string>& args);
+  void interactive_fregd(const std::string& cmd, const std::vector<std::string>& args);
+  void interactive_mem(const std::string& cmd, const std::vector<std::string>& args);
+  void interactive_str(const std::string& cmd, const std::vector<std::string>& args);
+  void interactive_until(const std::string& cmd, const std::vector<std::string>& args);
+  reg_t get_reg(const std::vector<std::string>& args);
+  reg_t get_freg(const std::vector<std::string>& args);
+  reg_t get_mem(const std::vector<std::string>& args);
+  reg_t get_pc(const std::vector<std::string>& args);
+  reg_t get_tohost(const std::vector<std::string>& args);
+
+  friend class htif_t;
+};
+
+#endif
diff --git a/riscv/trap.cc b/riscv/trap.cc
new file mode 100644
index 0000000..d873a19
--- /dev/null
+++ b/riscv/trap.cc
@@ -0,0 +1,10 @@
+#include "trap.h"
+
+const char* trap_name(trap_t t)
+{
+  #define DECLARE_TRAP(x) "trap_"#x
+  static const char* names[] = { TRAP_LIST };
+  #undef DECLARE_TRAP
+
+  return (unsigned)t >= sizeof(names)/sizeof(names[0]) ? "unknown" : names[t];
+}
diff --git a/riscv/trap.h b/riscv/trap.h
new file mode 100644
index 0000000..ad5491a
--- /dev/null
+++ b/riscv/trap.h
@@ -0,0 +1,44 @@
+#ifndef _RISCV_TRAP_H
+#define _RISCV_TRAP_H
+
+#define TRAP_LIST \
+  DECLARE_TRAP(instruction_address_misaligned), \
+  DECLARE_TRAP(instruction_access_fault), \
+  DECLARE_TRAP(illegal_instruction), \
+  DECLARE_TRAP(privileged_instruction), \
+  DECLARE_TRAP(fp_disabled), \
+  DECLARE_TRAP(interrupt), \
+  DECLARE_TRAP(syscall), \
+  DECLARE_TRAP(breakpoint), \
+  DECLARE_TRAP(load_address_misaligned), \
+  DECLARE_TRAP(store_address_misaligned), \
+  DECLARE_TRAP(load_access_fault), \
+  DECLARE_TRAP(store_access_fault), \
+  DECLARE_TRAP(vector_disabled), \
+  DECLARE_TRAP(vector_bank), \
+  DECLARE_TRAP(vector_illegal_instruction), \
+  DECLARE_TRAP(reserved1), \
+  DECLARE_TRAP(reserved2), \
+  DECLARE_TRAP(reserved3), \
+  DECLARE_TRAP(int0), \
+  DECLARE_TRAP(int1), \
+  DECLARE_TRAP(int2), \
+  DECLARE_TRAP(int3), \
+  DECLARE_TRAP(int4), \
+  DECLARE_TRAP(int5), \
+  DECLARE_TRAP(int6), \
+  DECLARE_TRAP(int7), \
+
+#define DECLARE_TRAP(x) trap_##x
+enum trap_t
+{
+  TRAP_LIST
+  NUM_TRAPS
+};
+#undef DECLARE_TRAP
+
+struct halt_t {}; // thrown to stop the processor from running
+
+extern "C" const char* trap_name(trap_t t);
+
+#endif
diff --git a/scripts/config.guess b/scripts/config.guess
new file mode 100755
index 0000000..f32079a
--- /dev/null
+++ b/scripts/config.guess
@@ -0,0 +1,1526 @@
+#! /bin/sh
+# Attempt to guess a canonical system name.
+#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+#   Free Software Foundation, Inc.
+
+timestamp='2008-01-23'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+# 02110-1301, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+
+# Originally written by Per Bothner <per@bothner.com>.
+# Please send patches to <config-patches@gnu.org>.  Submit a context
+# diff and a properly formatted ChangeLog entry.
+#
+# This script attempts to guess a canonical system name similar to
+# config.sub.  If it succeeds, it prints the system name on stdout, and
+# exits with 0.  Otherwise, it exits with 1.
+#
+# The plan is that this can be called by configure scripts if you
+# don't specify an explicit build system type.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION]
+
+Output the configuration name of the system \`$me' is run on.
+
+Operation modes:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.guess ($timestamp)
+
+Originally written by Per Bothner.
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+    * )
+       break ;;
+  esac
+done
+
+if test $# != 0; then
+  echo "$me: too many arguments$help" >&2
+  exit 1
+fi
+
+trap 'exit 1' 1 2 15
+
+# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
+# compiler to aid in system detection is discouraged as it requires
+# temporary files to be created and, as you can see below, it is a
+# headache to deal with in a portable fashion.
+
+# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
+# use `HOST_CC' if defined, but it is deprecated.
+
+# Portable tmp directory creation inspired by the Autoconf team.
+
+set_cc_for_build='
+trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ;
+trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ;
+: ${TMPDIR=/tmp} ;
+ { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
+ { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } ||
+ { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+ { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ;
+dummy=$tmp/dummy ;
+tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ;
+case $CC_FOR_BUILD,$HOST_CC,$CC in
+ ,,)    echo "int x;" > $dummy.c ;
+	for c in cc gcc c89 c99 ; do
+	  if ($c -c -o $dummy.o $dummy.c) >/dev/null 2>&1 ; then
+	     CC_FOR_BUILD="$c"; break ;
+	  fi ;
+	done ;
+	if test x"$CC_FOR_BUILD" = x ; then
+	  CC_FOR_BUILD=no_compiler_found ;
+	fi
+	;;
+ ,,*)   CC_FOR_BUILD=$CC ;;
+ ,*,*)  CC_FOR_BUILD=$HOST_CC ;;
+esac ; set_cc_for_build= ;'
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 1994-08-24)
+if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
+	PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
+UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
+UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
+UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
+
+# Note: order is significant - the case branches are not exclusive.
+
+case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
+    *:NetBSD:*:*)
+	# NetBSD (nbsd) targets should (where applicable) match one or
+	# more of the tupples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
+	# switched to ELF, *-*-netbsd* would select the old
+	# object file format.  This provides both forward
+	# compatibility and a consistent mechanism for selecting the
+	# object file format.
+	#
+	# Note: NetBSD doesn't particularly care about the vendor
+	# portion of the name.  We always set it to "unknown".
+	sysctl="sysctl -n hw.machine_arch"
+	UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \
+	    /usr/sbin/$sysctl 2>/dev/null || echo unknown)`
+	case "${UNAME_MACHINE_ARCH}" in
+	    armeb) machine=armeb-unknown ;;
+	    arm*) machine=arm-unknown ;;
+	    sh3el) machine=shl-unknown ;;
+	    sh3eb) machine=sh-unknown ;;
+	    sh5el) machine=sh5le-unknown ;;
+	    *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
+	esac
+	# The Operating System including object format, if it has switched
+	# to ELF recently, or will in the future.
+	case "${UNAME_MACHINE_ARCH}" in
+	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
+		eval $set_cc_for_build
+		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
+			| grep __ELF__ >/dev/null
+		then
+		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
+		    # Return netbsd for either.  FIX?
+		    os=netbsd
+		else
+		    os=netbsdelf
+		fi
+		;;
+	    *)
+	        os=netbsd
+		;;
+	esac
+	# The OS release
+	# Debian GNU/NetBSD machines have a different userland, and
+	# thus, need a distinct triplet. However, they do not need
+	# kernel version information, so it can be replaced with a
+	# suitable tag, in the style of linux-gnu.
+	case "${UNAME_VERSION}" in
+	    Debian*)
+		release='-gnu'
+		;;
+	    *)
+		release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
+		;;
+	esac
+	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
+	# contains redundant information, the shorter form:
+	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
+	echo "${machine}-${os}${release}"
+	exit ;;
+    *:OpenBSD:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
+	echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
+	exit ;;
+    *:ekkoBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
+	exit ;;
+    *:SolidBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-solidbsd${UNAME_RELEASE}
+	exit ;;
+    macppc:MirBSD:*:*)
+	echo powerpc-unknown-mirbsd${UNAME_RELEASE}
+	exit ;;
+    *:MirBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
+	exit ;;
+    alpha:OSF1:*:*)
+	case $UNAME_RELEASE in
+	*4.0)
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+		;;
+	*5.*)
+	        UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+		;;
+	esac
+	# According to Compaq, /usr/sbin/psrinfo has been available on
+	# OSF/1 and Tru64 systems produced since 1995.  I hope that
+	# covers most systems running today.  This code pipes the CPU
+	# types through head -n 1, so we only detect the type of CPU 0.
+	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
+	case "$ALPHA_CPU_TYPE" in
+	    "EV4 (21064)")
+		UNAME_MACHINE="alpha" ;;
+	    "EV4.5 (21064)")
+		UNAME_MACHINE="alpha" ;;
+	    "LCA4 (21066/21068)")
+		UNAME_MACHINE="alpha" ;;
+	    "EV5 (21164)")
+		UNAME_MACHINE="alphaev5" ;;
+	    "EV5.6 (21164A)")
+		UNAME_MACHINE="alphaev56" ;;
+	    "EV5.6 (21164PC)")
+		UNAME_MACHINE="alphapca56" ;;
+	    "EV5.7 (21164PC)")
+		UNAME_MACHINE="alphapca57" ;;
+	    "EV6 (21264)")
+		UNAME_MACHINE="alphaev6" ;;
+	    "EV6.7 (21264A)")
+		UNAME_MACHINE="alphaev67" ;;
+	    "EV6.8CB (21264C)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.8AL (21264B)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.8CX (21264D)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.9A (21264/EV69A)")
+		UNAME_MACHINE="alphaev69" ;;
+	    "EV7 (21364)")
+		UNAME_MACHINE="alphaev7" ;;
+	    "EV7.9 (21364A)")
+		UNAME_MACHINE="alphaev79" ;;
+	esac
+	# A Pn.n version is a patched version.
+	# A Vn.n version is a released version.
+	# A Tn.n version is a released field test version.
+	# A Xn.n version is an unreleased experimental baselevel.
+	# 1.2 uses "1.2" for uname -r.
+	echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+	exit ;;
+    Alpha\ *:Windows_NT*:*)
+	# How do we know it's Interix rather than the generic POSIX subsystem?
+	# Should we change UNAME_MACHINE based on the output of uname instead
+	# of the specific Alpha model?
+	echo alpha-pc-interix
+	exit ;;
+    21064:Windows_NT:50:3)
+	echo alpha-dec-winnt3.5
+	exit ;;
+    Amiga*:UNIX_System_V:4.0:*)
+	echo m68k-unknown-sysv4
+	exit ;;
+    *:[Aa]miga[Oo][Ss]:*:*)
+	echo ${UNAME_MACHINE}-unknown-amigaos
+	exit ;;
+    *:[Mm]orph[Oo][Ss]:*:*)
+	echo ${UNAME_MACHINE}-unknown-morphos
+	exit ;;
+    *:OS/390:*:*)
+	echo i370-ibm-openedition
+	exit ;;
+    *:z/VM:*:*)
+	echo s390-ibm-zvmoe
+	exit ;;
+    *:OS400:*:*)
+        echo powerpc-ibm-os400
+	exit ;;
+    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+	echo arm-acorn-riscix${UNAME_RELEASE}
+	exit ;;
+    arm:riscos:*:*|arm:RISCOS:*:*)
+	echo arm-unknown-riscos
+	exit ;;
+    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
+	echo hppa1.1-hitachi-hiuxmpp
+	exit ;;
+    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
+	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
+	if test "`(/bin/universe) 2>/dev/null`" = att ; then
+		echo pyramid-pyramid-sysv3
+	else
+		echo pyramid-pyramid-bsd
+	fi
+	exit ;;
+    NILE*:*:*:dcosx)
+	echo pyramid-pyramid-svr4
+	exit ;;
+    DRS?6000:unix:4.0:6*)
+	echo sparc-icl-nx6
+	exit ;;
+    DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
+	case `/usr/bin/uname -p` in
+	    sparc) echo sparc-icl-nx7; exit ;;
+	esac ;;
+    sun4H:SunOS:5.*:*)
+	echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+	echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
+	echo i386-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    sun4*:SunOS:6*:*)
+	# According to config.sub, this is the proper way to canonicalize
+	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
+	# it's likely to be more like Solaris than SunOS4.
+	echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    sun4*:SunOS:*:*)
+	case "`/usr/bin/arch -k`" in
+	    Series*|S4*)
+		UNAME_RELEASE=`uname -v`
+		;;
+	esac
+	# Japanese Language versions have a version number like `4.1.3-JL'.
+	echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'`
+	exit ;;
+    sun3*:SunOS:*:*)
+	echo m68k-sun-sunos${UNAME_RELEASE}
+	exit ;;
+    sun*:*:4.2BSD:*)
+	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
+	test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3
+	case "`/bin/arch`" in
+	    sun3)
+		echo m68k-sun-sunos${UNAME_RELEASE}
+		;;
+	    sun4)
+		echo sparc-sun-sunos${UNAME_RELEASE}
+		;;
+	esac
+	exit ;;
+    aushp:SunOS:*:*)
+	echo sparc-auspex-sunos${UNAME_RELEASE}
+	exit ;;
+    # The situation for MiNT is a little confusing.  The machine name
+    # can be virtually everything (everything which is not
+    # "atarist" or "atariste" at least should have a processor
+    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
+    # to the lowercase version "mint" (or "freemint").  Finally
+    # the system name "TOS" denotes a system which is actually not
+    # MiNT.  But MiNT is downward compatible to TOS, so this should
+    # be no problem.
+    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
+        echo m68k-atari-mint${UNAME_RELEASE}
+	exit ;;
+    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
+	echo m68k-atari-mint${UNAME_RELEASE}
+        exit ;;
+    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
+        echo m68k-atari-mint${UNAME_RELEASE}
+	exit ;;
+    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
+        echo m68k-milan-mint${UNAME_RELEASE}
+        exit ;;
+    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
+        echo m68k-hades-mint${UNAME_RELEASE}
+        exit ;;
+    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
+        echo m68k-unknown-mint${UNAME_RELEASE}
+        exit ;;
+    m68k:machten:*:*)
+	echo m68k-apple-machten${UNAME_RELEASE}
+	exit ;;
+    powerpc:machten:*:*)
+	echo powerpc-apple-machten${UNAME_RELEASE}
+	exit ;;
+    RISC*:Mach:*:*)
+	echo mips-dec-mach_bsd4.3
+	exit ;;
+    RISC*:ULTRIX:*:*)
+	echo mips-dec-ultrix${UNAME_RELEASE}
+	exit ;;
+    VAX*:ULTRIX*:*:*)
+	echo vax-dec-ultrix${UNAME_RELEASE}
+	exit ;;
+    2020:CLIX:*:* | 2430:CLIX:*:*)
+	echo clipper-intergraph-clix${UNAME_RELEASE}
+	exit ;;
+    mips:*:*:UMIPS | mips:*:*:RISCos)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+#ifdef __cplusplus
+#include <stdio.h>  /* for printf() prototype */
+	int main (int argc, char *argv[]) {
+#else
+	int main (argc, argv) int argc; char *argv[]; {
+#endif
+	#if defined (host_mips) && defined (MIPSEB)
+	#if defined (SYSTYPE_SYSV)
+	  printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_SVR4)
+	  printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
+	  printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0);
+	#endif
+	#endif
+	  exit (-1);
+	}
+EOF
+	$CC_FOR_BUILD -o $dummy $dummy.c &&
+	  dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` &&
+	  SYSTEM_NAME=`$dummy $dummyarg` &&
+	    { echo "$SYSTEM_NAME"; exit; }
+	echo mips-mips-riscos${UNAME_RELEASE}
+	exit ;;
+    Motorola:PowerMAX_OS:*:*)
+	echo powerpc-motorola-powermax
+	exit ;;
+    Motorola:*:4.3:PL8-*)
+	echo powerpc-harris-powermax
+	exit ;;
+    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
+	echo powerpc-harris-powermax
+	exit ;;
+    Night_Hawk:Power_UNIX:*:*)
+	echo powerpc-harris-powerunix
+	exit ;;
+    m88k:CX/UX:7*:*)
+	echo m88k-harris-cxux7
+	exit ;;
+    m88k:*:4*:R4*)
+	echo m88k-motorola-sysv4
+	exit ;;
+    m88k:*:3*:R3*)
+	echo m88k-motorola-sysv3
+	exit ;;
+    AViiON:dgux:*:*)
+        # DG/UX returns AViiON for all architectures
+        UNAME_PROCESSOR=`/usr/bin/uname -p`
+	if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
+	then
+	    if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
+	       [ ${TARGET_BINARY_INTERFACE}x = x ]
+	    then
+		echo m88k-dg-dgux${UNAME_RELEASE}
+	    else
+		echo m88k-dg-dguxbcs${UNAME_RELEASE}
+	    fi
+	else
+	    echo i586-dg-dgux${UNAME_RELEASE}
+	fi
+ 	exit ;;
+    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
+	echo m88k-dolphin-sysv3
+	exit ;;
+    M88*:*:R3*:*)
+	# Delta 88k system running SVR3
+	echo m88k-motorola-sysv3
+	exit ;;
+    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+	echo m88k-tektronix-sysv3
+	exit ;;
+    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+	echo m68k-tektronix-bsd
+	exit ;;
+    *:IRIX*:*:*)
+	echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'`
+	exit ;;
+    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
+	echo romp-ibm-aix     # uname -m gives an 8 hex-code CPU id
+	exit ;;               # Note that: echo "'`uname -s`'" gives 'AIX '
+    i*86:AIX:*:*)
+	echo i386-ibm-aix
+	exit ;;
+    ia64:AIX:*:*)
+	if [ -x /usr/bin/oslevel ] ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+	fi
+	echo ${UNAME_MACHINE}-ibm-aix${IBM_REV}
+	exit ;;
+    *:AIX:2:3)
+	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+		eval $set_cc_for_build
+		sed 's/^		//' << EOF >$dummy.c
+		#include <sys/systemcfg.h>
+
+		main()
+			{
+			if (!__power_pc())
+				exit(1);
+			puts("powerpc-ibm-aix3.2.5");
+			exit(0);
+			}
+EOF
+		if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy`
+		then
+			echo "$SYSTEM_NAME"
+		else
+			echo rs6000-ibm-aix3.2.5
+		fi
+	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+		echo rs6000-ibm-aix3.2.4
+	else
+		echo rs6000-ibm-aix3.2
+	fi
+	exit ;;
+    *:AIX:*:[456])
+	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
+	if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
+		IBM_ARCH=rs6000
+	else
+		IBM_ARCH=powerpc
+	fi
+	if [ -x /usr/bin/oslevel ] ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+	fi
+	echo ${IBM_ARCH}-ibm-aix${IBM_REV}
+	exit ;;
+    *:AIX:*:*)
+	echo rs6000-ibm-aix
+	exit ;;
+    ibmrt:4.4BSD:*|romp-ibm:BSD:*)
+	echo romp-ibm-bsd4.4
+	exit ;;
+    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
+	echo romp-ibm-bsd${UNAME_RELEASE}   # 4.3 with uname added to
+	exit ;;                             # report: romp-ibm BSD 4.3
+    *:BOSX:*:*)
+	echo rs6000-bull-bosx
+	exit ;;
+    DPX/2?00:B.O.S.:*:*)
+	echo m68k-bull-sysv3
+	exit ;;
+    9000/[34]??:4.3bsd:1.*:*)
+	echo m68k-hp-bsd
+	exit ;;
+    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+	echo m68k-hp-bsd4.4
+	exit ;;
+    9000/[34678]??:HP-UX:*:*)
+	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+	case "${UNAME_MACHINE}" in
+	    9000/31? )            HP_ARCH=m68000 ;;
+	    9000/[34]?? )         HP_ARCH=m68k ;;
+	    9000/[678][0-9][0-9])
+		if [ -x /usr/bin/getconf ]; then
+		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
+                    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+                    case "${sc_cpu_version}" in
+                      523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
+                      528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
+                      532)                      # CPU_PA_RISC2_0
+                        case "${sc_kernel_bits}" in
+                          32) HP_ARCH="hppa2.0n" ;;
+                          64) HP_ARCH="hppa2.0w" ;;
+			  '') HP_ARCH="hppa2.0" ;;   # HP-UX 10.20
+                        esac ;;
+                    esac
+		fi
+		if [ "${HP_ARCH}" = "" ]; then
+		    eval $set_cc_for_build
+		    sed 's/^              //' << EOF >$dummy.c
+
+              #define _HPUX_SOURCE
+              #include <stdlib.h>
+              #include <unistd.h>
+
+              int main ()
+              {
+              #if defined(_SC_KERNEL_BITS)
+                  long bits = sysconf(_SC_KERNEL_BITS);
+              #endif
+                  long cpu  = sysconf (_SC_CPU_VERSION);
+
+                  switch (cpu)
+              	{
+              	case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+              	case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+              	case CPU_PA_RISC2_0:
+              #if defined(_SC_KERNEL_BITS)
+              	    switch (bits)
+              		{
+              		case 64: puts ("hppa2.0w"); break;
+              		case 32: puts ("hppa2.0n"); break;
+              		default: puts ("hppa2.0"); break;
+              		} break;
+              #else  /* !defined(_SC_KERNEL_BITS) */
+              	    puts ("hppa2.0"); break;
+              #endif
+              	default: puts ("hppa1.0"); break;
+              	}
+                  exit (0);
+              }
+EOF
+		    (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
+		    test -z "$HP_ARCH" && HP_ARCH=hppa
+		fi ;;
+	esac
+	if [ ${HP_ARCH} = "hppa2.0w" ]
+	then
+	    eval $set_cc_for_build
+
+	    # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
+	    # 32-bit code.  hppa64-hp-hpux* has the same kernel and a compiler
+	    # generating 64-bit code.  GNU and HP use different nomenclature:
+	    #
+	    # $ CC_FOR_BUILD=cc ./config.guess
+	    # => hppa2.0w-hp-hpux11.23
+	    # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
+	    # => hppa64-hp-hpux11.23
+
+	    if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) |
+		grep __LP64__ >/dev/null
+	    then
+		HP_ARCH="hppa2.0w"
+	    else
+		HP_ARCH="hppa64"
+	    fi
+	fi
+	echo ${HP_ARCH}-hp-hpux${HPUX_REV}
+	exit ;;
+    ia64:HP-UX:*:*)
+	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+	echo ia64-hp-hpux${HPUX_REV}
+	exit ;;
+    3050*:HI-UX:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#include <unistd.h>
+	int
+	main ()
+	{
+	  long cpu = sysconf (_SC_CPU_VERSION);
+	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
+	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
+	     results, however.  */
+	  if (CPU_IS_PA_RISC (cpu))
+	    {
+	      switch (cpu)
+		{
+		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
+		  default: puts ("hppa-hitachi-hiuxwe2"); break;
+		}
+	    }
+	  else if (CPU_IS_HP_MC68K (cpu))
+	    puts ("m68k-hitachi-hiuxwe2");
+	  else puts ("unknown-hitachi-hiuxwe2");
+	  exit (0);
+	}
+EOF
+	$CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` &&
+		{ echo "$SYSTEM_NAME"; exit; }
+	echo unknown-hitachi-hiuxwe2
+	exit ;;
+    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
+	echo hppa1.1-hp-bsd
+	exit ;;
+    9000/8??:4.3bsd:*:*)
+	echo hppa1.0-hp-bsd
+	exit ;;
+    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
+	echo hppa1.0-hp-mpeix
+	exit ;;
+    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
+	echo hppa1.1-hp-osf
+	exit ;;
+    hp8??:OSF1:*:*)
+	echo hppa1.0-hp-osf
+	exit ;;
+    i*86:OSF1:*:*)
+	if [ -x /usr/sbin/sysversion ] ; then
+	    echo ${UNAME_MACHINE}-unknown-osf1mk
+	else
+	    echo ${UNAME_MACHINE}-unknown-osf1
+	fi
+	exit ;;
+    parisc*:Lites*:*:*)
+	echo hppa1.1-hp-lites
+	exit ;;
+    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+	echo c1-convex-bsd
+        exit ;;
+    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+        exit ;;
+    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+	echo c34-convex-bsd
+        exit ;;
+    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+	echo c38-convex-bsd
+        exit ;;
+    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+	echo c4-convex-bsd
+        exit ;;
+    CRAY*Y-MP:*:*:*)
+	echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*[A-Z]90:*:*:*)
+	echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \
+	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
+	      -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*TS:*:*:*)
+	echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*T3E:*:*:*)
+	echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*SV1:*:*:*)
+	echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    *:UNICOS/mp:*:*)
+	echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
+	FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+        FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
+        echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+        exit ;;
+    5000:UNIX_System_V:4.*:*)
+        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+        FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
+        echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
+    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
+	echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
+	exit ;;
+    sparc*:BSD/OS:*:*)
+	echo sparc-unknown-bsdi${UNAME_RELEASE}
+	exit ;;
+    *:BSD/OS:*:*)
+	echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
+	exit ;;
+    *:FreeBSD:*:*)
+	case ${UNAME_MACHINE} in
+	    pc98)
+		echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+	    amd64)
+		echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+	    *)
+		echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+	esac
+	exit ;;
+    i*:CYGWIN*:*)
+	echo ${UNAME_MACHINE}-pc-cygwin
+	exit ;;
+    *:MINGW*:*)
+	echo ${UNAME_MACHINE}-pc-mingw32
+	exit ;;
+    i*:windows32*:*)
+    	# uname -m includes "-pc" on this system.
+    	echo ${UNAME_MACHINE}-mingw32
+	exit ;;
+    i*:PW*:*)
+	echo ${UNAME_MACHINE}-pc-pw32
+	exit ;;
+    *:Interix*:[3456]*)
+    	case ${UNAME_MACHINE} in
+	    x86)
+		echo i586-pc-interix${UNAME_RELEASE}
+		exit ;;
+	    EM64T | authenticamd)
+		echo x86_64-unknown-interix${UNAME_RELEASE}
+		exit ;;
+	    IA64)
+		echo ia64-unknown-interix${UNAME_RELEASE}
+		exit ;;
+	esac ;;
+    [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
+	echo i${UNAME_MACHINE}-pc-mks
+	exit ;;
+    i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
+	# How do we know it's Interix rather than the generic POSIX subsystem?
+	# It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
+	# UNAME_MACHINE based on the output of uname instead of i386?
+	echo i586-pc-interix
+	exit ;;
+    i*:UWIN*:*)
+	echo ${UNAME_MACHINE}-pc-uwin
+	exit ;;
+    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
+	echo x86_64-unknown-cygwin
+	exit ;;
+    p*:CYGWIN*:*)
+	echo powerpcle-unknown-cygwin
+	exit ;;
+    prep*:SunOS:5.*:*)
+	echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    *:GNU:*:*)
+	# the GNU system
+	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
+	exit ;;
+    *:GNU/*:*:*)
+	# other systems with GNU libc and userland
+	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu
+	exit ;;
+    i*86:Minix:*:*)
+	echo ${UNAME_MACHINE}-pc-minix
+	exit ;;
+    arm*:Linux:*:*)
+	eval $set_cc_for_build
+	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_EABI__
+	then
+	    echo ${UNAME_MACHINE}-unknown-linux-gnu
+	else
+	    echo ${UNAME_MACHINE}-unknown-linux-gnueabi
+	fi
+	exit ;;
+    avr32*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    cris:Linux:*:*)
+	echo cris-axis-linux-gnu
+	exit ;;
+    crisv32:Linux:*:*)
+	echo crisv32-axis-linux-gnu
+	exit ;;
+    frv:Linux:*:*)
+    	echo frv-unknown-linux-gnu
+	exit ;;
+    ia64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    m32r*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    m68*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    mips:Linux:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#undef CPU
+	#undef mips
+	#undef mipsel
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	CPU=mipsel
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	CPU=mips
+	#else
+	CPU=
+	#endif
+	#endif
+EOF
+	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
+	    /^CPU/{
+		s: ::g
+		p
+	    }'`"
+	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
+	;;
+    mips64:Linux:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#undef CPU
+	#undef mips64
+	#undef mips64el
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	CPU=mips64el
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	CPU=mips64
+	#else
+	CPU=
+	#endif
+	#endif
+EOF
+	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
+	    /^CPU/{
+		s: ::g
+		p
+	    }'`"
+	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
+	;;
+    or32:Linux:*:*)
+	echo or32-unknown-linux-gnu
+	exit ;;
+    ppc:Linux:*:*)
+	echo powerpc-unknown-linux-gnu
+	exit ;;
+    ppc64:Linux:*:*)
+	echo powerpc64-unknown-linux-gnu
+	exit ;;
+    alpha:Linux:*:*)
+	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
+	  EV5)   UNAME_MACHINE=alphaev5 ;;
+	  EV56)  UNAME_MACHINE=alphaev56 ;;
+	  PCA56) UNAME_MACHINE=alphapca56 ;;
+	  PCA57) UNAME_MACHINE=alphapca56 ;;
+	  EV6)   UNAME_MACHINE=alphaev6 ;;
+	  EV67)  UNAME_MACHINE=alphaev67 ;;
+	  EV68*) UNAME_MACHINE=alphaev68 ;;
+        esac
+	objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null
+	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
+	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
+	exit ;;
+    parisc:Linux:*:* | hppa:Linux:*:*)
+	# Look for CPU level
+	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
+	  PA7*) echo hppa1.1-unknown-linux-gnu ;;
+	  PA8*) echo hppa2.0-unknown-linux-gnu ;;
+	  *)    echo hppa-unknown-linux-gnu ;;
+	esac
+	exit ;;
+    parisc64:Linux:*:* | hppa64:Linux:*:*)
+	echo hppa64-unknown-linux-gnu
+	exit ;;
+    s390:Linux:*:* | s390x:Linux:*:*)
+	echo ${UNAME_MACHINE}-ibm-linux
+	exit ;;
+    sh64*:Linux:*:*)
+    	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    sh*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    sparc:Linux:*:* | sparc64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    vax:Linux:*:*)
+	echo ${UNAME_MACHINE}-dec-linux-gnu
+	exit ;;
+    x86_64:Linux:*:*)
+	echo x86_64-unknown-linux-gnu
+	exit ;;
+    xtensa*:Linux:*:*)
+    	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    i*86:Linux:*:*)
+	# The BFD linker knows what the default object file format is, so
+	# first see if it will tell us. cd to the root directory to prevent
+	# problems with other programs or directories called `ld' in the path.
+	# Set LC_ALL=C to ensure ld outputs messages in English.
+	ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \
+			 | sed -ne '/supported targets:/!d
+				    s/[ 	][ 	]*/ /g
+				    s/.*supported targets: *//
+				    s/ .*//
+				    p'`
+        case "$ld_supported_targets" in
+	  elf32-i386)
+		TENTATIVE="${UNAME_MACHINE}-pc-linux-gnu"
+		;;
+	  a.out-i386-linux)
+		echo "${UNAME_MACHINE}-pc-linux-gnuaout"
+		exit ;;
+	  coff-i386)
+		echo "${UNAME_MACHINE}-pc-linux-gnucoff"
+		exit ;;
+	  "")
+		# Either a pre-BFD a.out linker (linux-gnuoldld) or
+		# one that does not give us useful --help.
+		echo "${UNAME_MACHINE}-pc-linux-gnuoldld"
+		exit ;;
+	esac
+	# Determine whether the default compiler is a.out or elf
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#include <features.h>
+	#ifdef __ELF__
+	# ifdef __GLIBC__
+	#  if __GLIBC__ >= 2
+	LIBC=gnu
+	#  else
+	LIBC=gnulibc1
+	#  endif
+	# else
+	LIBC=gnulibc1
+	# endif
+	#else
+	#if defined(__INTEL_COMPILER) || defined(__PGI) || defined(__SUNPRO_C) || defined(__SUNPRO_CC)
+	LIBC=gnu
+	#else
+	LIBC=gnuaout
+	#endif
+	#endif
+	#ifdef __dietlibc__
+	LIBC=dietlibc
+	#endif
+EOF
+	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
+	    /^LIBC/{
+		s: ::g
+		p
+	    }'`"
+	test x"${LIBC}" != x && {
+		echo "${UNAME_MACHINE}-pc-linux-${LIBC}"
+		exit
+	}
+	test x"${TENTATIVE}" != x && { echo "${TENTATIVE}"; exit; }
+	;;
+    i*86:DYNIX/ptx:4*:*)
+	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
+	# earlier versions are messed up and put the nodename in both
+	# sysname and nodename.
+	echo i386-sequent-sysv4
+	exit ;;
+    i*86:UNIX_SV:4.2MP:2.*)
+        # Unixware is an offshoot of SVR4, but it has its own version
+        # number series starting with 2...
+        # I am not positive that other SVR4 systems won't match this,
+	# I just have to hope.  -- rms.
+        # Use sysv4.2uw... so that sysv4* matches it.
+	echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
+	exit ;;
+    i*86:OS/2:*:*)
+	# If we were able to find `uname', then EMX Unix compatibility
+	# is probably installed.
+	echo ${UNAME_MACHINE}-pc-os2-emx
+	exit ;;
+    i*86:XTS-300:*:STOP)
+	echo ${UNAME_MACHINE}-unknown-stop
+	exit ;;
+    i*86:atheos:*:*)
+	echo ${UNAME_MACHINE}-unknown-atheos
+	exit ;;
+    i*86:syllable:*:*)
+	echo ${UNAME_MACHINE}-pc-syllable
+	exit ;;
+    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*)
+	echo i386-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    i*86:*DOS:*:*)
+	echo ${UNAME_MACHINE}-pc-msdosdjgpp
+	exit ;;
+    i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*)
+	UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'`
+	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+		echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL}
+	else
+		echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL}
+	fi
+	exit ;;
+    i*86:*:5:[678]*)
+    	# UnixWare 7.x, OpenUNIX and OpenServer 6.
+	case `/bin/uname -X | grep "^Machine"` in
+	    *486*)	     UNAME_MACHINE=i486 ;;
+	    *Pentium)	     UNAME_MACHINE=i586 ;;
+	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
+	esac
+	echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
+	exit ;;
+    i*86:*:3.2:*)
+	if test -f /usr/options/cb.name; then
+		UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
+		echo ${UNAME_MACHINE}-pc-isc$UNAME_REL
+	elif /bin/uname -X 2>/dev/null >/dev/null ; then
+		UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
+		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
+		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
+			&& UNAME_MACHINE=i586
+		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		echo ${UNAME_MACHINE}-pc-sco$UNAME_REL
+	else
+		echo ${UNAME_MACHINE}-pc-sysv32
+	fi
+	exit ;;
+    pc:*:*:*)
+	# Left here for compatibility:
+        # uname -m prints for DJGPP always 'pc', but it prints nothing about
+        # the processor, so we play safe by assuming i386.
+	echo i386-pc-msdosdjgpp
+        exit ;;
+    Intel:Mach:3*:*)
+	echo i386-pc-mach3
+	exit ;;
+    paragon:*:*:*)
+	echo i860-intel-osf1
+	exit ;;
+    i860:*:4.*:*) # i860-SVR4
+	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+	  echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4
+	else # Add other i860-SVR4 vendors below as they are discovered.
+	  echo i860-unknown-sysv${UNAME_RELEASE}  # Unknown i860-SVR4
+	fi
+	exit ;;
+    mini*:CTIX:SYS*5:*)
+	# "miniframe"
+	echo m68010-convergent-sysv
+	exit ;;
+    mc68k:UNIX:SYSTEM5:3.51m)
+	echo m68k-convergent-sysv
+	exit ;;
+    M680?0:D-NIX:5.3:*)
+	echo m68k-diab-dnix
+	exit ;;
+    M68*:*:R3V[5678]*:*)
+	test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
+    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
+	OS_REL=''
+	test -r /etc/.relid \
+	&& OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	  && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
+    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+          && { echo i486-ncr-sysv4; exit; } ;;
+    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
+	echo m68k-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    mc68030:UNIX_System_V:4.*:*)
+	echo m68k-atari-sysv4
+	exit ;;
+    TSUNAMI:LynxOS:2.*:*)
+	echo sparc-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    rs6000:LynxOS:2.*:*)
+	echo rs6000-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*)
+	echo powerpc-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    SM[BE]S:UNIX_SV:*:*)
+	echo mips-dde-sysv${UNAME_RELEASE}
+	exit ;;
+    RM*:ReliantUNIX-*:*:*)
+	echo mips-sni-sysv4
+	exit ;;
+    RM*:SINIX-*:*:*)
+	echo mips-sni-sysv4
+	exit ;;
+    *:SINIX-*:*:*)
+	if uname -p 2>/dev/null >/dev/null ; then
+		UNAME_MACHINE=`(uname -p) 2>/dev/null`
+		echo ${UNAME_MACHINE}-sni-sysv4
+	else
+		echo ns32k-sni-sysv
+	fi
+	exit ;;
+    PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+                      # says <Richard.M.Bartel@ccMail.Census.GOV>
+        echo i586-unisys-sysv4
+        exit ;;
+    *:UNIX_System_V:4*:FTX*)
+	# From Gerald Hewes <hewes@openmarket.com>.
+	# How about differentiating between stratus architectures? -djm
+	echo hppa1.1-stratus-sysv4
+	exit ;;
+    *:*:*:FTX*)
+	# From seanf@swdc.stratus.com.
+	echo i860-stratus-sysv4
+	exit ;;
+    i*86:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo ${UNAME_MACHINE}-stratus-vos
+	exit ;;
+    *:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo hppa1.1-stratus-vos
+	exit ;;
+    mc68*:A/UX:*:*)
+	echo m68k-apple-aux${UNAME_RELEASE}
+	exit ;;
+    news*:NEWS-OS:6*:*)
+	echo mips-sony-newsos6
+	exit ;;
+    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
+	if [ -d /usr/nec ]; then
+	        echo mips-nec-sysv${UNAME_RELEASE}
+	else
+	        echo mips-unknown-sysv${UNAME_RELEASE}
+	fi
+        exit ;;
+    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
+	echo powerpc-be-beos
+	exit ;;
+    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
+	echo powerpc-apple-beos
+	exit ;;
+    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
+	echo i586-pc-beos
+	exit ;;
+    SX-4:SUPER-UX:*:*)
+	echo sx4-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-5:SUPER-UX:*:*)
+	echo sx5-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-6:SUPER-UX:*:*)
+	echo sx6-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-7:SUPER-UX:*:*)
+	echo sx7-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-8:SUPER-UX:*:*)
+	echo sx8-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-8R:SUPER-UX:*:*)
+	echo sx8r-nec-superux${UNAME_RELEASE}
+	exit ;;
+    Power*:Rhapsody:*:*)
+	echo powerpc-apple-rhapsody${UNAME_RELEASE}
+	exit ;;
+    *:Rhapsody:*:*)
+	echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE}
+	exit ;;
+    *:Darwin:*:*)
+	UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
+	case $UNAME_PROCESSOR in
+	    unknown) UNAME_PROCESSOR=powerpc ;;
+	esac
+	echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
+	exit ;;
+    *:procnto*:*:* | *:QNX:[0123456789]*:*)
+	UNAME_PROCESSOR=`uname -p`
+	if test "$UNAME_PROCESSOR" = "x86"; then
+		UNAME_PROCESSOR=i386
+		UNAME_MACHINE=pc
+	fi
+	echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE}
+	exit ;;
+    *:QNX:*:4*)
+	echo i386-pc-qnx
+	exit ;;
+    NSE-?:NONSTOP_KERNEL:*:*)
+	echo nse-tandem-nsk${UNAME_RELEASE}
+	exit ;;
+    NSR-?:NONSTOP_KERNEL:*:*)
+	echo nsr-tandem-nsk${UNAME_RELEASE}
+	exit ;;
+    *:NonStop-UX:*:*)
+	echo mips-compaq-nonstopux
+	exit ;;
+    BS2000:POSIX*:*:*)
+	echo bs2000-siemens-sysv
+	exit ;;
+    DS/*:UNIX_System_V:*:*)
+	echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE}
+	exit ;;
+    *:Plan9:*:*)
+	# "uname -m" is not consistent, so use $cputype instead. 386
+	# is converted to i386 for consistency with other x86
+	# operating systems.
+	if test "$cputype" = "386"; then
+	    UNAME_MACHINE=i386
+	else
+	    UNAME_MACHINE="$cputype"
+	fi
+	echo ${UNAME_MACHINE}-unknown-plan9
+	exit ;;
+    *:TOPS-10:*:*)
+	echo pdp10-unknown-tops10
+	exit ;;
+    *:TENEX:*:*)
+	echo pdp10-unknown-tenex
+	exit ;;
+    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
+	echo pdp10-dec-tops20
+	exit ;;
+    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
+	echo pdp10-xkl-tops20
+	exit ;;
+    *:TOPS-20:*:*)
+	echo pdp10-unknown-tops20
+	exit ;;
+    *:ITS:*:*)
+	echo pdp10-unknown-its
+	exit ;;
+    SEI:*:*:SEIUX)
+        echo mips-sei-seiux${UNAME_RELEASE}
+	exit ;;
+    *:DragonFly:*:*)
+	echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
+	exit ;;
+    *:*VMS:*:*)
+    	UNAME_MACHINE=`(uname -p) 2>/dev/null`
+	case "${UNAME_MACHINE}" in
+	    A*) echo alpha-dec-vms ; exit ;;
+	    I*) echo ia64-dec-vms ; exit ;;
+	    V*) echo vax-dec-vms ; exit ;;
+	esac ;;
+    *:XENIX:*:SysV)
+	echo i386-pc-xenix
+	exit ;;
+    i*86:skyos:*:*)
+	echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//'
+	exit ;;
+    i*86:rdos:*:*)
+	echo ${UNAME_MACHINE}-pc-rdos
+	exit ;;
+esac
+
+#echo '(No uname command or uname output not recognized.)' 1>&2
+#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
+
+eval $set_cc_for_build
+cat >$dummy.c <<EOF
+#ifdef _SEQUENT_
+# include <sys/types.h>
+# include <sys/utsname.h>
+#endif
+main ()
+{
+#if defined (sony)
+#if defined (MIPSEB)
+  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
+     I don't know....  */
+  printf ("mips-sony-bsd\n"); exit (0);
+#else
+#include <sys/param.h>
+  printf ("m68k-sony-newsos%s\n",
+#ifdef NEWSOS4
+          "4"
+#else
+	  ""
+#endif
+         ); exit (0);
+#endif
+#endif
+
+#if defined (__arm) && defined (__acorn) && defined (__unix)
+  printf ("arm-acorn-riscix\n"); exit (0);
+#endif
+
+#if defined (hp300) && !defined (hpux)
+  printf ("m68k-hp-bsd\n"); exit (0);
+#endif
+
+#if defined (NeXT)
+#if !defined (__ARCHITECTURE__)
+#define __ARCHITECTURE__ "m68k"
+#endif
+  int version;
+  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
+  if (version < 4)
+    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
+  else
+    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
+  exit (0);
+#endif
+
+#if defined (MULTIMAX) || defined (n16)
+#if defined (UMAXV)
+  printf ("ns32k-encore-sysv\n"); exit (0);
+#else
+#if defined (CMU)
+  printf ("ns32k-encore-mach\n"); exit (0);
+#else
+  printf ("ns32k-encore-bsd\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (__386BSD__)
+  printf ("i386-pc-bsd\n"); exit (0);
+#endif
+
+#if defined (sequent)
+#if defined (i386)
+  printf ("i386-sequent-dynix\n"); exit (0);
+#endif
+#if defined (ns32000)
+  printf ("ns32k-sequent-dynix\n"); exit (0);
+#endif
+#endif
+
+#if defined (_SEQUENT_)
+    struct utsname un;
+
+    uname(&un);
+
+    if (strncmp(un.version, "V2", 2) == 0) {
+	printf ("i386-sequent-ptx2\n"); exit (0);
+    }
+    if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
+	printf ("i386-sequent-ptx1\n"); exit (0);
+    }
+    printf ("i386-sequent-ptx\n"); exit (0);
+
+#endif
+
+#if defined (vax)
+# if !defined (ultrix)
+#  include <sys/param.h>
+#  if defined (BSD)
+#   if BSD == 43
+      printf ("vax-dec-bsd4.3\n"); exit (0);
+#   else
+#    if BSD == 199006
+      printf ("vax-dec-bsd4.3reno\n"); exit (0);
+#    else
+      printf ("vax-dec-bsd\n"); exit (0);
+#    endif
+#   endif
+#  else
+    printf ("vax-dec-bsd\n"); exit (0);
+#  endif
+# else
+    printf ("vax-dec-ultrix\n"); exit (0);
+# endif
+#endif
+
+#if defined (alliant) && defined (i860)
+  printf ("i860-alliant-bsd\n"); exit (0);
+#endif
+
+  exit (1);
+}
+EOF
+
+$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` &&
+	{ echo "$SYSTEM_NAME"; exit; }
+
+# Apollos put the system type in the environment.
+
+test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; }
+
+# Convex versions that predate uname can use getsysinfo(1)
+
+if [ -x /usr/convex/getsysinfo ]
+then
+    case `getsysinfo -f cpu_type` in
+    c1*)
+	echo c1-convex-bsd
+	exit ;;
+    c2*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+	exit ;;
+    c34*)
+	echo c34-convex-bsd
+	exit ;;
+    c38*)
+	echo c38-convex-bsd
+	exit ;;
+    c4*)
+	echo c4-convex-bsd
+	exit ;;
+    esac
+fi
+
+cat >&2 <<EOF
+$0: unable to guess system type
+
+This script, last modified $timestamp, has failed to recognize
+the operating system you are using. It is advised that you
+download the most up to date version of the config scripts from
+
+  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
+and
+  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
+
+If the version you run ($0) is already up to date, please
+send the following data and any information you think might be
+pertinent to <config-patches@gnu.org> in order to provide the needed
+information to handle your system.
+
+config.guess timestamp = $timestamp
+
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null`
+
+hostinfo               = `(hostinfo) 2>/dev/null`
+/bin/universe          = `(/bin/universe) 2>/dev/null`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
+/bin/arch              = `(/bin/arch) 2>/dev/null`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
+
+UNAME_MACHINE = ${UNAME_MACHINE}
+UNAME_RELEASE = ${UNAME_RELEASE}
+UNAME_SYSTEM  = ${UNAME_SYSTEM}
+UNAME_VERSION = ${UNAME_VERSION}
+EOF
+
+exit 1
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/scripts/config.sub b/scripts/config.sub
new file mode 100755
index 0000000..9613107
--- /dev/null
+++ b/scripts/config.sub
@@ -0,0 +1,1663 @@
+#! /bin/sh
+# Configuration validation subroutine script.
+#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+#   Free Software Foundation, Inc.
+
+timestamp='2009-09-02'
+
+# This file is (in principle) common to ALL GNU software.
+# The presence of a machine in this file suggests that SOME GNU software
+# can handle that machine.  It does not imply ALL GNU software can.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+# 02110-1301, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+
+# Please send patches to <config-patches@gnu.org>.  Submit a context
+# diff and a properly formatted ChangeLog entry.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support.  The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS
+       $0 [OPTION] ALIAS
+
+Canonicalize a configuration name.
+
+Operation modes:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help"
+       exit 1 ;;
+
+    *local*)
+       # First pass through any local machine types.
+       echo $1
+       exit ;;
+
+    * )
+       break ;;
+  esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+    exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+    exit 1;;
+esac
+
+# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
+# Here we must recognize all the valid KERNEL-OS combinations.
+maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
+case $maybe_os in
+  nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \
+  uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \
+  storm-chaos* | os2-emx* | rtmk-nova*)
+    os=-$maybe_os
+    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
+    ;;
+  *)
+    basic_machine=`echo $1 | sed 's/-[^-]*$//'`
+    if [ $basic_machine != $1 ]
+    then os=`echo $1 | sed 's/.*-/-/'`
+    else os=; fi
+    ;;
+esac
+
+### Let's recognize common machines as not being operating systems so
+### that things like config.sub decstation-3100 work.  We also
+### recognize some manufacturers as not being operating systems, so we
+### can provide default operating systems below.
+case $os in
+	-sun*os*)
+		# Prevent following clause from handling this invalid input.
+		;;
+	-dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \
+	-att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \
+	-unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \
+	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
+	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
+	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
+	-apple | -axis | -knuth | -cray)
+		os=
+		basic_machine=$1
+		;;
+	-sim | -cisco | -oki | -wec | -winbond)
+		os=
+		basic_machine=$1
+		;;
+	-scout)
+		;;
+	-wrs)
+		os=-vxworks
+		basic_machine=$1
+		;;
+	-chorusos*)
+		os=-chorusos
+		basic_machine=$1
+		;;
+ 	-chorusrdb)
+ 		os=-chorusrdb
+		basic_machine=$1
+ 		;;
+	-hiux*)
+		os=-hiuxwe2
+		;;
+	-sco6)
+		os=-sco5v6
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco5)
+		os=-sco3.2v5
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco4)
+		os=-sco3.2v4
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2.[4-9]*)
+		os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2v[4-9]*)
+		# Don't forget version if it is 3.2v4 or newer.
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco5v6*)
+		# Don't forget version if it is 3.2v4 or newer.
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco*)
+		os=-sco3.2v2
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-udk*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-isc)
+		os=-isc2.2
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-clix*)
+		basic_machine=clipper-intergraph
+		;;
+	-isc*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-lynx*)
+		os=-lynxos
+		;;
+	-ptx*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'`
+		;;
+	-windowsnt*)
+		os=`echo $os | sed -e 's/windowsnt/winnt/'`
+		;;
+	-psos*)
+		os=-psos
+		;;
+	-mint | -mint[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
+esac
+
+# Decode aliases for certain CPU-COMPANY combinations.
+case $basic_machine in
+	# Recognize the basic CPU types without company name.
+	# Some are omitted here because they have special meanings below.
+	1750a | 580 \
+	| a29k \
+	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
+	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
+	| am33_2.0 \
+	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \
+	| bfin \
+	| c4x | clipper \
+	| d10v | d30v | dlx | dsp16xx \
+	| fido | fr30 | frv \
+	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+	| i370 | i860 | i960 | ia64 \
+	| ip2k | iq2000 \
+	| m32c | m32r | m32rle | m68000 | m68k | m88k \
+	| maxq | mb | microblaze | mcore | mep \
+	| mips | mipsbe | mipseb | mipsel | mipsle \
+	| mips16 \
+	| mips64 | mips64el \
+	| mips64vr | mips64vrel \
+	| mips64orion | mips64orionel \
+	| mips64vr4100 | mips64vr4100el \
+	| mips64vr4300 | mips64vr4300el \
+	| mips64vr5000 | mips64vr5000el \
+	| mips64vr5900 | mips64vr5900el \
+	| mipsisa32 | mipsisa32el \
+	| mipsisa32r2 | mipsisa32r2el \
+	| mipsisa64 | mipsisa64el \
+	| mipsisa64r2 | mipsisa64r2el \
+	| mipsisa64sb1 | mipsisa64sb1el \
+	| mipsisa64sr71k | mipsisa64sr71kel \
+	| mipstx39 | mipstx39el \
+	| mn10200 | mn10300 \
+	| mt \
+	| msp430 \
+	| nios | nios2 \
+	| ns16k | ns32k \
+	| or32 \
+	| pdp10 | pdp11 | pj | pjl \
+	| powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
+	| pyramid \
+	| score \
+	| sh | sh[1234] | sh[24]a | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
+	| sh64 | sh64le \
+	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
+	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
+	| spu | strongarm \
+	| tahoe | thumb | tic4x | tic80 | tron \
+	| v850 | v850e \
+	| we32k \
+	| x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \
+	| z8k)
+		basic_machine=$basic_machine-unknown
+		;;
+	m6811 | m68hc11 | m6812 | m68hc12)
+		# Motorola 68HC11/12.
+		basic_machine=$basic_machine-unknown
+		os=-none
+		;;
+	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
+		;;
+	ms1)
+		basic_machine=mt-unknown
+		;;
+
+	# cbatten - Add maven target
+	maven)
+		basic_machine=mipsmavenel-ucb
+		;;
+
+	# We use `pc' rather than `unknown'
+	# because (1) that's what they normally are, and
+	# (2) the word "unknown" tends to confuse beginning users.
+	i*86 | x86_64)
+	  basic_machine=$basic_machine-pc
+	  ;;
+	# Object if more than one company name word.
+	*-*-*)
+		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+		exit 1
+		;;
+	# Recognize the basic CPU types with company name.
+	580-* \
+	| a29k-* \
+	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
+	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
+	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
+	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
+	| avr-* | avr32-* \
+	| bfin-* | bs2000-* \
+	| c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
+	| clipper-* | craynv-* | cydra-* \
+	| d10v-* | d30v-* | dlx-* \
+	| elxsi-* \
+	| f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
+	| h8300-* | h8500-* \
+	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
+	| i*86-* | i860-* | i960-* | ia64-* \
+	| ip2k-* | iq2000-* \
+	| m32c-* | m32r-* | m32rle-* \
+	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
+	| m88110-* | m88k-* | maxq-* | mcore-* \
+	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
+	| mips16-* \
+	| mips64-* | mips64el-* \
+	| mips64vr-* | mips64vrel-* \
+	| mips64orion-* | mips64orionel-* \
+	| mips64vr4100-* | mips64vr4100el-* \
+	| mips64vr4300-* | mips64vr4300el-* \
+	| mips64vr5000-* | mips64vr5000el-* \
+	| mips64vr5900-* | mips64vr5900el-* \
+	| mipsisa32-* | mipsisa32el-* \
+	| mipsisa32r2-* | mipsisa32r2el-* \
+	| mipsisa64-* | mipsisa64el-* \
+	| mipsisa64r2-* | mipsisa64r2el-* \
+	| mipsisa64sb1-* | mipsisa64sb1el-* \
+	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
+	| mipstx39-* | mipstx39el-* \
+	| mmix-* \
+	| mt-* \
+	| msp430-* \
+	| nios-* | nios2-* \
+	| none-* | np1-* | ns16k-* | ns32k-* \
+	| orion-* \
+	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
+	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
+	| pyramid-* \
+	| romp-* | rs6000-* \
+	| sh-* | sh[1234]-* | sh[24]a-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
+	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
+	| sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
+	| sparclite-* \
+	| sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | strongarm-* | sv1-* | sx?-* \
+	| tahoe-* | thumb-* \
+	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
+	| tron-* \
+	| v850-* | v850e-* | vax-* \
+	| we32k-* \
+	| x86-* | x86_64-* | xc16x-* | xps100-* | xscale-* | xscalee[bl]-* \
+	| xstormy16-* | xtensa*-* \
+	| ymp-* \
+	| z8k-*)
+		;;
+	# Recognize the basic CPU types without company name, with glob match.
+	xtensa*)
+		basic_machine=$basic_machine-unknown
+		;;
+	# Recognize the various machine names and aliases which stand
+	# for a CPU type and a company and sometimes even an OS.
+	386bsd)
+		basic_machine=i386-unknown
+		os=-bsd
+		;;
+	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+		basic_machine=m68000-att
+		;;
+	3b*)
+		basic_machine=we32k-att
+		;;
+	a29khif)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+    	abacus)
+		basic_machine=abacus-unknown
+		;;
+	adobe68k)
+		basic_machine=m68010-adobe
+		os=-scout
+		;;
+	alliant | fx80)
+		basic_machine=fx80-alliant
+		;;
+	altos | altos3068)
+		basic_machine=m68k-altos
+		;;
+	am29k)
+		basic_machine=a29k-none
+		os=-bsd
+		;;
+	amd64)
+		basic_machine=x86_64-pc
+		;;
+	amd64-*)
+		basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	amdahl)
+		basic_machine=580-amdahl
+		os=-sysv
+		;;
+	amiga | amiga-*)
+		basic_machine=m68k-unknown
+		;;
+	amigaos | amigados)
+		basic_machine=m68k-unknown
+		os=-amigaos
+		;;
+	amigaunix | amix)
+		basic_machine=m68k-unknown
+		os=-sysv4
+		;;
+	apollo68)
+		basic_machine=m68k-apollo
+		os=-sysv
+		;;
+	apollo68bsd)
+		basic_machine=m68k-apollo
+		os=-bsd
+		;;
+	aux)
+		basic_machine=m68k-apple
+		os=-aux
+		;;
+	balance)
+		basic_machine=ns32k-sequent
+		os=-dynix
+		;;
+	blackfin)
+		basic_machine=bfin-unknown
+		os=-linux
+		;;
+	blackfin-*)
+		basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'`
+		os=-linux
+		;;
+	c90)
+		basic_machine=c90-cray
+		os=-unicos
+		;;
+	convex-c1)
+		basic_machine=c1-convex
+		os=-bsd
+		;;
+	convex-c2)
+		basic_machine=c2-convex
+		os=-bsd
+		;;
+	convex-c32)
+		basic_machine=c32-convex
+		os=-bsd
+		;;
+	convex-c34)
+		basic_machine=c34-convex
+		os=-bsd
+		;;
+	convex-c38)
+		basic_machine=c38-convex
+		os=-bsd
+		;;
+	cray | j90)
+		basic_machine=j90-cray
+		os=-unicos
+		;;
+	craynv)
+		basic_machine=craynv-cray
+		os=-unicosmp
+		;;
+	cr16)
+		basic_machine=cr16-unknown
+		os=-elf
+		;;
+	crds | unos)
+		basic_machine=m68k-crds
+		;;
+	crisv32 | crisv32-* | etraxfs*)
+		basic_machine=crisv32-axis
+		;;
+	cris | cris-* | etrax*)
+		basic_machine=cris-axis
+		;;
+	crx)
+		basic_machine=crx-unknown
+		os=-elf
+		;;
+	da30 | da30-*)
+		basic_machine=m68k-da30
+		;;
+	decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
+		basic_machine=mips-dec
+		;;
+	decsystem10* | dec10*)
+		basic_machine=pdp10-dec
+		os=-tops10
+		;;
+	decsystem20* | dec20*)
+		basic_machine=pdp10-dec
+		os=-tops20
+		;;
+	delta | 3300 | motorola-3300 | motorola-delta \
+	      | 3300-motorola | delta-motorola)
+		basic_machine=m68k-motorola
+		;;
+	delta88)
+		basic_machine=m88k-motorola
+		os=-sysv3
+		;;
+	djgpp)
+		basic_machine=i586-pc
+		os=-msdosdjgpp
+		;;
+	dpx20 | dpx20-*)
+		basic_machine=rs6000-bull
+		os=-bosx
+		;;
+	dpx2* | dpx2*-bull)
+		basic_machine=m68k-bull
+		os=-sysv3
+		;;
+	ebmon29k)
+		basic_machine=a29k-amd
+		os=-ebmon
+		;;
+	elxsi)
+		basic_machine=elxsi-elxsi
+		os=-bsd
+		;;
+	encore | umax | mmax)
+		basic_machine=ns32k-encore
+		;;
+	es1800 | OSE68k | ose68k | ose | OSE)
+		basic_machine=m68k-ericsson
+		os=-ose
+		;;
+	fx2800)
+		basic_machine=i860-alliant
+		;;
+	genix)
+		basic_machine=ns32k-ns
+		;;
+	gmicro)
+		basic_machine=tron-gmicro
+		os=-sysv
+		;;
+	go32)
+		basic_machine=i386-pc
+		os=-go32
+		;;
+	h3050r* | hiux*)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	h8300hms)
+		basic_machine=h8300-hitachi
+		os=-hms
+		;;
+	h8300xray)
+		basic_machine=h8300-hitachi
+		os=-xray
+		;;
+	h8500hms)
+		basic_machine=h8500-hitachi
+		os=-hms
+		;;
+	harris)
+		basic_machine=m88k-harris
+		os=-sysv3
+		;;
+	hp300-*)
+		basic_machine=m68k-hp
+		;;
+	hp300bsd)
+		basic_machine=m68k-hp
+		os=-bsd
+		;;
+	hp300hpux)
+		basic_machine=m68k-hp
+		os=-hpux
+		;;
+	hp3k9[0-9][0-9] | hp9[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hp9k2[0-9][0-9] | hp9k31[0-9])
+		basic_machine=m68000-hp
+		;;
+	hp9k3[2-9][0-9])
+		basic_machine=m68k-hp
+		;;
+	hp9k6[0-9][0-9] | hp6[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hp9k7[0-79][0-9] | hp7[0-79][0-9])
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k78[0-9] | hp78[0-9])
+		# FIXME: really hppa2.0-hp
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+		# FIXME: really hppa2.0-hp
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[0-9][13679] | hp8[0-9][13679])
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[0-9][0-9] | hp8[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hppa-next)
+		os=-nextstep3
+		;;
+	hppaosf)
+		basic_machine=hppa1.1-hp
+		os=-osf
+		;;
+	hppro)
+		basic_machine=hppa1.1-hp
+		os=-proelf
+		;;
+	i370-ibm* | ibm*)
+		basic_machine=i370-ibm
+		;;
+# I'm not sure what "Sysv32" means.  Should this be sysv3.2?
+	i*86v32)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv32
+		;;
+	i*86v4*)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv4
+		;;
+	i*86v)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv
+		;;
+	i*86sol2)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-solaris2
+		;;
+	i386mach)
+		basic_machine=i386-mach
+		os=-mach
+		;;
+	i386-vsta | vsta)
+		basic_machine=i386-unknown
+		os=-vsta
+		;;
+	iris | iris4d)
+		basic_machine=mips-sgi
+		case $os in
+		    -irix*)
+			;;
+		    *)
+			os=-irix4
+			;;
+		esac
+		;;
+	isi68 | isi)
+		basic_machine=m68k-isi
+		os=-sysv
+		;;
+	m68knommu)
+		basic_machine=m68k-unknown
+		os=-linux
+		;;
+	m68knommu-*)
+		basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'`
+		os=-linux
+		;;
+	m88k-omron*)
+		basic_machine=m88k-omron
+		;;
+	magnum | m3230)
+		basic_machine=mips-mips
+		os=-sysv
+		;;
+	merlin)
+		basic_machine=ns32k-utek
+		os=-sysv
+		;;
+	mingw32)
+		basic_machine=i386-pc
+		os=-mingw32
+		;;
+	mingw32ce)
+		basic_machine=arm-unknown
+		os=-mingw32ce
+		;;
+	miniframe)
+		basic_machine=m68000-convergent
+		;;
+	*mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
+	mips3*-*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
+		;;
+	mips3*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
+		;;
+	monitor)
+		basic_machine=m68k-rom68k
+		os=-coff
+		;;
+	morphos)
+		basic_machine=powerpc-unknown
+		os=-morphos
+		;;
+	msdos)
+		basic_machine=i386-pc
+		os=-msdos
+		;;
+	ms1-*)
+		basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
+		;;
+	mvs)
+		basic_machine=i370-ibm
+		os=-mvs
+		;;
+	ncr3000)
+		basic_machine=i486-ncr
+		os=-sysv4
+		;;
+	netbsd386)
+		basic_machine=i386-unknown
+		os=-netbsd
+		;;
+	netwinder)
+		basic_machine=armv4l-rebel
+		os=-linux
+		;;
+	news | news700 | news800 | news900)
+		basic_machine=m68k-sony
+		os=-newsos
+		;;
+	news1000)
+		basic_machine=m68030-sony
+		os=-newsos
+		;;
+	news-3600 | risc-news)
+		basic_machine=mips-sony
+		os=-newsos
+		;;
+	necv70)
+		basic_machine=v70-nec
+		os=-sysv
+		;;
+	next | m*-next )
+		basic_machine=m68k-next
+		case $os in
+		    -nextstep* )
+			;;
+		    -ns2*)
+		      os=-nextstep2
+			;;
+		    *)
+		      os=-nextstep3
+			;;
+		esac
+		;;
+	nh3000)
+		basic_machine=m68k-harris
+		os=-cxux
+		;;
+	nh[45]000)
+		basic_machine=m88k-harris
+		os=-cxux
+		;;
+	nindy960)
+		basic_machine=i960-intel
+		os=-nindy
+		;;
+	mon960)
+		basic_machine=i960-intel
+		os=-mon960
+		;;
+	nonstopux)
+		basic_machine=mips-compaq
+		os=-nonstopux
+		;;
+	np1)
+		basic_machine=np1-gould
+		;;
+	nsr-tandem)
+		basic_machine=nsr-tandem
+		;;
+	op50n-* | op60c-*)
+		basic_machine=hppa1.1-oki
+		os=-proelf
+		;;
+	openrisc | openrisc-*)
+		basic_machine=or32-unknown
+		;;
+	os400)
+		basic_machine=powerpc-ibm
+		os=-os400
+		;;
+	OSE68000 | ose68000)
+		basic_machine=m68000-ericsson
+		os=-ose
+		;;
+	os68k)
+		basic_machine=m68k-none
+		os=-os68k
+		;;
+	pa-hitachi)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	paragon)
+		basic_machine=i860-intel
+		os=-osf
+		;;
+	parisc)
+		basic_machine=hppa-unknown
+		os=-linux
+		;;
+	parisc-*)
+		basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'`
+		os=-linux
+		;;
+	pbd)
+		basic_machine=sparc-tti
+		;;
+	pbb)
+		basic_machine=m68k-tti
+		;;
+	pc532 | pc532-*)
+		basic_machine=ns32k-pc532
+		;;
+	pc98)
+		basic_machine=i386-pc
+		;;
+	pc98-*)
+		basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentium | p5 | k5 | k6 | nexgen | viac3)
+		basic_machine=i586-pc
+		;;
+	pentiumpro | p6 | 6x86 | athlon | athlon_*)
+		basic_machine=i686-pc
+		;;
+	pentiumii | pentium2 | pentiumiii | pentium3)
+		basic_machine=i686-pc
+		;;
+	pentium4)
+		basic_machine=i786-pc
+		;;
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+		basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentiumpro-* | p6-* | 6x86-* | athlon-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentium4-*)
+		basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pn)
+		basic_machine=pn-gould
+		;;
+	power)	basic_machine=power-ibm
+		;;
+	ppc)	basic_machine=powerpc-unknown
+		;;
+	ppc-*)	basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppcle | powerpclittle | ppc-le | powerpc-little)
+		basic_machine=powerpcle-unknown
+		;;
+	ppcle-* | powerpclittle-*)
+		basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppc64)	basic_machine=powerpc64-unknown
+		;;
+	ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppc64le | powerpc64little | ppc64-le | powerpc64-little)
+		basic_machine=powerpc64le-unknown
+		;;
+	ppc64le-* | powerpc64little-*)
+		basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ps2)
+		basic_machine=i386-ibm
+		;;
+	pw32)
+		basic_machine=i586-unknown
+		os=-pw32
+		;;
+	rdos)
+		basic_machine=i386-pc
+		os=-rdos
+		;;
+	rom68k)
+		basic_machine=m68k-rom68k
+		os=-coff
+		;;
+	rm[46]00)
+		basic_machine=mips-siemens
+		;;
+	rtpc | rtpc-*)
+		basic_machine=romp-ibm
+		;;
+	s390 | s390-*)
+		basic_machine=s390-ibm
+		;;
+	s390x | s390x-*)
+		basic_machine=s390x-ibm
+		;;
+	sa29200)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	sb1)
+		basic_machine=mipsisa64sb1-unknown
+		;;
+	sb1el)
+		basic_machine=mipsisa64sb1el-unknown
+		;;
+	sde)
+		basic_machine=mipsisa32-sde
+		os=-elf
+		;;
+	sei)
+		basic_machine=mips-sei
+		os=-seiux
+		;;
+	sequent)
+		basic_machine=i386-sequent
+		;;
+	sh)
+		basic_machine=sh-hitachi
+		os=-hms
+		;;
+	sh5el)
+		basic_machine=sh5le-unknown
+		;;
+	sh64)
+		basic_machine=sh64-unknown
+		;;
+	sparclite-wrs | simso-wrs)
+		basic_machine=sparclite-wrs
+		os=-vxworks
+		;;
+	sps7)
+		basic_machine=m68k-bull
+		os=-sysv2
+		;;
+	spur)
+		basic_machine=spur-unknown
+		;;
+	st2000)
+		basic_machine=m68k-tandem
+		;;
+	stratus)
+		basic_machine=i860-stratus
+		os=-sysv4
+		;;
+	sun2)
+		basic_machine=m68000-sun
+		;;
+	sun2os3)
+		basic_machine=m68000-sun
+		os=-sunos3
+		;;
+	sun2os4)
+		basic_machine=m68000-sun
+		os=-sunos4
+		;;
+	sun3os3)
+		basic_machine=m68k-sun
+		os=-sunos3
+		;;
+	sun3os4)
+		basic_machine=m68k-sun
+		os=-sunos4
+		;;
+	sun4os3)
+		basic_machine=sparc-sun
+		os=-sunos3
+		;;
+	sun4os4)
+		basic_machine=sparc-sun
+		os=-sunos4
+		;;
+	sun4sol2)
+		basic_machine=sparc-sun
+		os=-solaris2
+		;;
+	sun3 | sun3-*)
+		basic_machine=m68k-sun
+		;;
+	sun4)
+		basic_machine=sparc-sun
+		;;
+	sun386 | sun386i | roadrunner)
+		basic_machine=i386-sun
+		;;
+	sv1)
+		basic_machine=sv1-cray
+		os=-unicos
+		;;
+	symmetry)
+		basic_machine=i386-sequent
+		os=-dynix
+		;;
+	t3e)
+		basic_machine=alphaev5-cray
+		os=-unicos
+		;;
+	t90)
+		basic_machine=t90-cray
+		os=-unicos
+		;;
+	tic54x | c54x*)
+		basic_machine=tic54x-unknown
+		os=-coff
+		;;
+	tic55x | c55x*)
+		basic_machine=tic55x-unknown
+		os=-coff
+		;;
+	tic6x | c6x*)
+		basic_machine=tic6x-unknown
+		os=-coff
+		;;
+	tile*)
+		basic_machine=tile-unknown
+		os=-linux-gnu
+		;;
+	tx39)
+		basic_machine=mipstx39-unknown
+		;;
+	tx39el)
+		basic_machine=mipstx39el-unknown
+		;;
+	toad1)
+		basic_machine=pdp10-xkl
+		os=-tops20
+		;;
+	tower | tower-32)
+		basic_machine=m68k-ncr
+		;;
+	tpf)
+		basic_machine=s390x-ibm
+		os=-tpf
+		;;
+	udi29k)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	ultra3)
+		basic_machine=a29k-nyu
+		os=-sym1
+		;;
+	v810 | necv810)
+		basic_machine=v810-nec
+		os=-none
+		;;
+	vaxv)
+		basic_machine=vax-dec
+		os=-sysv
+		;;
+	vms)
+		basic_machine=vax-dec
+		os=-vms
+		;;
+	vpp*|vx|vx-*)
+		basic_machine=f301-fujitsu
+		;;
+	vxworks960)
+		basic_machine=i960-wrs
+		os=-vxworks
+		;;
+	vxworks68)
+		basic_machine=m68k-wrs
+		os=-vxworks
+		;;
+	vxworks29k)
+		basic_machine=a29k-wrs
+		os=-vxworks
+		;;
+	w65*)
+		basic_machine=w65-wdc
+		os=-none
+		;;
+	w89k-*)
+		basic_machine=hppa1.1-winbond
+		os=-proelf
+		;;
+	xbox)
+		basic_machine=i686-pc
+		os=-mingw32
+		;;
+	xps | xps100)
+		basic_machine=xps100-honeywell
+		;;
+	ymp)
+		basic_machine=ymp-cray
+		os=-unicos
+		;;
+	z8k-*-coff)
+		basic_machine=z8k-unknown
+		os=-sim
+		;;
+	none)
+		basic_machine=none-none
+		os=-none
+		;;
+
+# Here we handle the default manufacturer of certain CPU types.  It is in
+# some cases the only manufacturer, in others, it is the most popular.
+	w89k)
+		basic_machine=hppa1.1-winbond
+		;;
+	op50n)
+		basic_machine=hppa1.1-oki
+		;;
+	op60c)
+		basic_machine=hppa1.1-oki
+		;;
+	romp)
+		basic_machine=romp-ibm
+		;;
+	mmix)
+		basic_machine=mmix-knuth
+		;;
+	rs6000)
+		basic_machine=rs6000-ibm
+		;;
+	vax)
+		basic_machine=vax-dec
+		;;
+	pdp10)
+		# there are many clones, so DEC is not a safe bet
+		basic_machine=pdp10-unknown
+		;;
+	pdp11)
+		basic_machine=pdp11-dec
+		;;
+	we32k)
+		basic_machine=we32k-att
+		;;
+	sh[1234] | sh[24]a | sh[34]eb | sh[1234]le | sh[23]ele)
+		basic_machine=sh-unknown
+		;;
+	sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v)
+		basic_machine=sparc-sun
+		;;
+	cydra)
+		basic_machine=cydra-cydrome
+		;;
+	orion)
+		basic_machine=orion-highlevel
+		;;
+	orion105)
+		basic_machine=clipper-highlevel
+		;;
+	mac | mpw | mac-mpw)
+		basic_machine=m68k-apple
+		;;
+	pmac | pmac-mpw)
+		basic_machine=powerpc-apple
+		;;
+	*-unknown)
+		# Make sure to match an already-canonicalized machine name.
+		;;
+	*)
+		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+		exit 1
+		;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $basic_machine in
+	*-digital*)
+		basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'`
+		;;
+	*-commodore*)
+		basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'`
+		;;
+	*)
+		;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if [ x"$os" != x"" ]
+then
+case $os in
+        # First match some system type aliases
+        # that might get confused with valid system types.
+	# -solaris* is a basic system type, with this one exception.
+	-solaris1 | -solaris1.*)
+		os=`echo $os | sed -e 's|solaris1|sunos4|'`
+		;;
+	-solaris)
+		os=-solaris2
+		;;
+	-svr4*)
+		os=-sysv4
+		;;
+	-unixware*)
+		os=-sysv4.2uw
+		;;
+	-gnu/linux*)
+		os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
+		;;
+	# First accept the basic system types.
+	# The portable systems comes first.
+	# Each alternative MUST END IN A *, to match a version number.
+	# -sysv* is not here because it comes later, after sysvr4.
+	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
+	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\
+	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
+	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
+	      | -aos* \
+	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
+	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
+	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
+	      | -openbsd* | -solidbsd* \
+	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
+	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
+	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
+	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
+	      | -chorusos* | -chorusrdb* \
+	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+	      | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \
+	      | -uxpv* | -beos* | -mpeix* | -udk* \
+	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
+	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
+	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
+	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
+	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
+	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops*)
+	# Remember, each alternative MUST END IN *, to match a version number.
+		;;
+	-qnx*)
+		case $basic_machine in
+		    x86-* | i*86-*)
+			;;
+		    *)
+			os=-nto$os
+			;;
+		esac
+		;;
+	-nto-qnx*)
+		;;
+	-nto*)
+		os=`echo $os | sed -e 's|nto|nto-qnx|'`
+		;;
+	-sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
+	      | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \
+	      | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
+		;;
+	-mac*)
+		os=`echo $os | sed -e 's|mac|macos|'`
+		;;
+	-linux-dietlibc)
+		os=-linux-dietlibc
+		;;
+	-linux*)
+		os=`echo $os | sed -e 's|linux|linux-gnu|'`
+		;;
+	-sunos5*)
+		os=`echo $os | sed -e 's|sunos5|solaris2|'`
+		;;
+	-sunos6*)
+		os=`echo $os | sed -e 's|sunos6|solaris3|'`
+		;;
+	-opened*)
+		os=-openedition
+		;;
+        -os400*)
+		os=-os400
+		;;
+	-wince*)
+		os=-wince
+		;;
+	-osfrose*)
+		os=-osfrose
+		;;
+	-osf*)
+		os=-osf
+		;;
+	-utek*)
+		os=-bsd
+		;;
+	-dynix*)
+		os=-bsd
+		;;
+	-acis*)
+		os=-aos
+		;;
+	-atheos*)
+		os=-atheos
+		;;
+	-syllable*)
+		os=-syllable
+		;;
+	-386bsd)
+		os=-bsd
+		;;
+	-ctix* | -uts*)
+		os=-sysv
+		;;
+	-nova*)
+		os=-rtmk-nova
+		;;
+	-ns2 )
+		os=-nextstep2
+		;;
+	-nsk*)
+		os=-nsk
+		;;
+	# Preserve the version number of sinix5.
+	-sinix5.*)
+		os=`echo $os | sed -e 's|sinix|sysv|'`
+		;;
+	-sinix*)
+		os=-sysv4
+		;;
+        -tpf*)
+		os=-tpf
+		;;
+	-triton*)
+		os=-sysv3
+		;;
+	-oss*)
+		os=-sysv3
+		;;
+	-svr4)
+		os=-sysv4
+		;;
+	-svr3)
+		os=-sysv3
+		;;
+	-sysvr4)
+		os=-sysv4
+		;;
+	# This must come after -sysvr4.
+	-sysv*)
+		;;
+	-ose*)
+		os=-ose
+		;;
+	-es1800*)
+		os=-ose
+		;;
+	-xenix)
+		os=-xenix
+		;;
+	-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+		os=-mint
+		;;
+	-aros*)
+		os=-aros
+		;;
+	-kaos*)
+		os=-kaos
+		;;
+	-zvmoe)
+		os=-zvmoe
+		;;
+	-none)
+		;;
+	*)
+		# Get rid of the `-' at the beginning of $os.
+		os=`echo $os | sed 's/[^-]*-//'`
+		echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
+		exit 1
+		;;
+esac
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system.  Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+case $basic_machine in
+        score-*)
+		os=-elf
+		;;
+        spu-*)
+		os=-elf
+		;;
+	*-acorn)
+		os=-riscix1.2
+		;;
+	arm*-rebel)
+		os=-linux
+		;;
+	arm*-semi)
+		os=-aout
+		;;
+        c4x-* | tic4x-*)
+        	os=-coff
+		;;
+	# This must come before the *-dec entry.
+	pdp10-*)
+		os=-tops20
+		;;
+	pdp11-*)
+		os=-none
+		;;
+	*-dec | vax-*)
+		os=-ultrix4.2
+		;;
+	m68*-apollo)
+		os=-domain
+		;;
+	i386-sun)
+		os=-sunos4.0.2
+		;;
+	m68000-sun)
+		os=-sunos3
+		# This also exists in the configure program, but was not the
+		# default.
+		# os=-sunos4
+		;;
+	m68*-cisco)
+		os=-aout
+		;;
+        mep-*)
+		os=-elf
+		;;
+	mips*-cisco)
+		os=-elf
+		;;
+	mips*-*)
+		os=-elf
+		;;
+	or32-*)
+		os=-coff
+		;;
+	*-tti)	# must be before sparc entry or we get the wrong os.
+		os=-sysv3
+		;;
+	sparc-* | *-sun)
+		os=-sunos4.1.1
+		;;
+	*-be)
+		os=-beos
+		;;
+	*-haiku)
+		os=-haiku
+		;;
+	*-ibm)
+		os=-aix
+		;;
+    	*-knuth)
+		os=-mmixware
+		;;
+	*-wec)
+		os=-proelf
+		;;
+	*-winbond)
+		os=-proelf
+		;;
+	*-oki)
+		os=-proelf
+		;;
+	*-hp)
+		os=-hpux
+		;;
+	*-hitachi)
+		os=-hiux
+		;;
+	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+		os=-sysv
+		;;
+	*-cbm)
+		os=-amigaos
+		;;
+	*-dg)
+		os=-dgux
+		;;
+	*-dolphin)
+		os=-sysv3
+		;;
+	m68k-ccur)
+		os=-rtu
+		;;
+	m88k-omron*)
+		os=-luna
+		;;
+	*-next )
+		os=-nextstep
+		;;
+	*-sequent)
+		os=-ptx
+		;;
+	*-crds)
+		os=-unos
+		;;
+	*-ns)
+		os=-genix
+		;;
+	i370-*)
+		os=-mvs
+		;;
+	*-next)
+		os=-nextstep3
+		;;
+	*-gould)
+		os=-sysv
+		;;
+	*-highlevel)
+		os=-bsd
+		;;
+	*-encore)
+		os=-bsd
+		;;
+	*-sgi)
+		os=-irix
+		;;
+	*-siemens)
+		os=-sysv4
+		;;
+	*-masscomp)
+		os=-rtu
+		;;
+	f30[01]-fujitsu | f700-fujitsu)
+		os=-uxpv
+		;;
+	*-rom68k)
+		os=-coff
+		;;
+	*-*bug)
+		os=-coff
+		;;
+	*-apple)
+		os=-macos
+		;;
+	*-atari*)
+		os=-mint
+		;;
+	*)
+		os=-none
+		;;
+esac
+fi
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer.  We pick the logical manufacturer.
+vendor=unknown
+case $basic_machine in
+	*-unknown)
+		case $os in
+			-riscix*)
+				vendor=acorn
+				;;
+			-sunos*)
+				vendor=sun
+				;;
+			-aix*)
+				vendor=ibm
+				;;
+			-beos*)
+				vendor=be
+				;;
+			-hpux*)
+				vendor=hp
+				;;
+			-mpeix*)
+				vendor=hp
+				;;
+			-hiux*)
+				vendor=hitachi
+				;;
+			-unos*)
+				vendor=crds
+				;;
+			-dgux*)
+				vendor=dg
+				;;
+			-luna*)
+				vendor=omron
+				;;
+			-genix*)
+				vendor=ns
+				;;
+			-mvs* | -opened*)
+				vendor=ibm
+				;;
+			-os400*)
+				vendor=ibm
+				;;
+			-ptx*)
+				vendor=sequent
+				;;
+			-tpf*)
+				vendor=ibm
+				;;
+			-vxsim* | -vxworks* | -windiss*)
+				vendor=wrs
+				;;
+			-aux*)
+				vendor=apple
+				;;
+			-hms*)
+				vendor=hitachi
+				;;
+			-mpw* | -macos*)
+				vendor=apple
+				;;
+			-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+				vendor=atari
+				;;
+			-vos*)
+				vendor=stratus
+				;;
+		esac
+		basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
+		;;
+esac
+
+echo $basic_machine$os
+exit
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/scripts/install.sh b/scripts/install.sh
new file mode 100755
index 0000000..89fc9b0
--- /dev/null
+++ b/scripts/install.sh
@@ -0,0 +1,238 @@
+#! /bin/sh
+#
+# install - install a program, script, or datafile
+# This comes from X11R5.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# `make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+#
+
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit="${DOITPROG-}"
+
+
+# put in absolute paths if you don't have them in your path; or use env. vars.
+
+mvprog="${MVPROG-mv}"
+cpprog="${CPPROG-cp}"
+chmodprog="${CHMODPROG-chmod}"
+chownprog="${CHOWNPROG-chown}"
+chgrpprog="${CHGRPPROG-chgrp}"
+stripprog="${STRIPPROG-strip}"
+rmprog="${RMPROG-rm}"
+mkdirprog="${MKDIRPROG-mkdir}"
+
+tranformbasename=""
+transform_arg=""
+instcmd="$mvprog"
+chmodcmd="$chmodprog 0755"
+chowncmd=""
+chgrpcmd=""
+stripcmd=""
+rmcmd="$rmprog -f"
+mvcmd="$mvprog"
+src=""
+dst=""
+dir_arg=""
+
+while [ x"$1" != x ]; do
+    case $1 in
+	-c) instcmd="$cpprog"
+	    shift
+	    continue;;
+
+	-d) dir_arg=true
+	    shift
+	    continue;;
+
+	-m) chmodcmd="$chmodprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-o) chowncmd="$chownprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-g) chgrpcmd="$chgrpprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-s) stripcmd="$stripprog"
+	    shift
+	    continue;;
+
+	-t=*) transformarg=`echo $1 | sed 's/-t=//'`
+	    shift
+	    continue;;
+
+	-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
+	    shift
+	    continue;;
+
+	*)  if [ x"$src" = x ]
+	    then
+		src=$1
+	    else
+		# this colon is to work around a 386BSD /bin/sh bug
+		:
+		dst=$1
+	    fi
+	    shift
+	    continue;;
+    esac
+done
+
+if [ x"$src" = x ]
+then
+	echo "install:	no input file specified"
+	exit 1
+else
+	true
+fi
+
+if [ x"$dir_arg" != x ]; then
+	dst=$src
+	src=""
+	
+	if [ -d $dst ]; then
+		instcmd=:
+	else
+		instcmd=mkdir
+	fi
+else
+
+# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
+# might cause directories to be created, which would be especially bad 
+# if $src (and thus $dsttmp) contains '*'.
+
+	if [ -f $src -o -d $src ]
+	then
+		true
+	else
+		echo "install:  $src does not exist"
+		exit 1
+	fi
+	
+	if [ x"$dst" = x ]
+	then
+		echo "install:	no destination specified"
+		exit 1
+	else
+		true
+	fi
+
+# If destination is a directory, append the input filename; if your system
+# does not like double slashes in filenames, you may need to add some logic
+
+	if [ -d $dst ]
+	then
+		dst="$dst"/`basename $src`
+	else
+		true
+	fi
+fi
+
+## this sed command emulates the dirname command
+dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
+
+# Make sure that the destination directory exists.
+#  this part is taken from Noah Friedman's mkinstalldirs script
+
+# Skip lots of stat calls in the usual case.
+if [ ! -d "$dstdir" ]; then
+defaultIFS='	
+'
+IFS="${IFS-${defaultIFS}}"
+
+oIFS="${IFS}"
+# Some sh's can't handle IFS=/ for some reason.
+IFS='%'
+set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
+IFS="${oIFS}"
+
+pathcomp=''
+
+while [ $# -ne 0 ] ; do
+	pathcomp="${pathcomp}${1}"
+	shift
+
+	if [ ! -d "${pathcomp}" ] ;
+        then
+		$mkdirprog "${pathcomp}"
+	else
+		true
+	fi
+
+	pathcomp="${pathcomp}/"
+done
+fi
+
+if [ x"$dir_arg" != x ]
+then
+	$doit $instcmd $dst &&
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
+else
+
+# If we're going to rename the final executable, determine the name now.
+
+	if [ x"$transformarg" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		dstfile=`basename $dst $transformbasename | 
+			sed $transformarg`$transformbasename
+	fi
+
+# don't allow the sed command to completely eliminate the filename
+
+	if [ x"$dstfile" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		true
+	fi
+
+# Make a temp file name in the proper directory.
+
+	dsttmp=$dstdir/#inst.$$#
+
+# Move or copy the file name to the temp name
+
+	$doit $instcmd $src $dsttmp &&
+
+	trap "rm -f ${dsttmp}" 0 &&
+
+# and set any options; do chmod last to preserve setuid bits
+
+# If any of these fail, we abort the whole thing.  If we want to
+# ignore errors from any of these, just make sure not to ignore
+# errors from the above "$doit $instcmd $src $dsttmp" command.
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
+
+# Now rename the file to the real destination.
+
+	$doit $rmcmd -f $dstdir/$dstfile &&
+	$doit $mvcmd $dsttmp $dstdir/$dstfile 
+
+fi &&
+
+
+exit 0
diff --git a/scripts/mk-install-dirs.sh b/scripts/mk-install-dirs.sh
new file mode 100755
index 0000000..644b5f7
--- /dev/null
+++ b/scripts/mk-install-dirs.sh
@@ -0,0 +1,40 @@
+#! /bin/sh
+# mkinstalldirs --- make directory hierarchy
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1993-05-16
+# Public domain
+
+# $Id: mkinstalldirs,v 1.1 2003/09/09 22:24:03 mhampton Exp $
+
+errstatus=0
+
+for file
+do
+   set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`
+   shift
+
+   pathcomp=
+   for d
+   do
+     pathcomp="$pathcomp$d"
+     case "$pathcomp" in
+       -* ) pathcomp=./$pathcomp ;;
+     esac
+
+     if test ! -d "$pathcomp"; then
+        echo "mkdir $pathcomp" 1>&2
+
+        mkdir "$pathcomp" || lasterr=$?
+
+        if test ! -d "$pathcomp"; then
+          errstatus=$lasterr
+        fi
+     fi
+
+     pathcomp="$pathcomp/"
+   done
+done
+
+exit $errstatus
+
+# mkinstalldirs ends here
diff --git a/scripts/vcs-version.sh b/scripts/vcs-version.sh
new file mode 100755
index 0000000..31fae86
--- /dev/null
+++ b/scripts/vcs-version.sh
@@ -0,0 +1,117 @@
+#!/bin/bash
+#=========================================================================
+# vcs-version.sh [options] [src-dir]
+#=========================================================================
+#
+#  -h  Display this message
+#  -v  Verbose mode
+#
+# This script will create a version string by querying a version control
+# system. The string is appropriate for use in installations and
+# distributions. Currently this script assumes we are using git as our
+# version control system but it would be possible to check and see if we
+# are using an alternative version control system and create a version
+# string appropriately.
+# 
+# The script uses git describe plus a few other git commands to create a
+# version strings in the following format:
+#
+#  X.Y[-Z-gN][-dirty]
+#
+# where X is the major release, Y is the minor release, Z is the number
+# of commits since the X.Y release, N is an eight digit abbreviated SHA
+# hash of the most recent commit and the dirty suffix is appended when
+# the working directory used to create the installation or distribution
+# is not a pristine checkout. Here are some example version strings:
+#
+#  0.0                    : initial import
+#  0.0-3-g99ef6933        : 3rd commit since initial import (N=99ef6933)
+#  1.0                    : release 1.0
+#  1.1-12-g3487ab12       : 12th commit since release 1.1 (N=3487ab12)
+#  1.1-12-g3487ab12-dirty : 12th commit since release 1.1 (N=3487ab12)
+#
+# The last example is from a dirty working directory. To find the last
+# release, the script looks for the last tag (does not need to be an
+# annotated tag, but probably should be) which matches the format rel-*.
+# If there is no such tag in the history, then the script uses 0.0 as
+# the release number and counts the total number of commits since the
+# original import for the commit count.
+#
+# If the current directory is not within the working directory, then the
+# path to the source directory should be supplied on the command line.
+#
+# Author : Christopher Batten
+# Date   : August 5, 2009
+
+set -e
+
+#-------------------------------------------------------------------------
+# Command line parsing
+#-------------------------------------------------------------------------
+
+if ( test "$1" = "-h" ); then
+  echo ""
+  sed -n '3p' $0 | sed -e 's/#//'
+  sed -n '5,/^$/p' $0 | sed -e 's/#//'
+  exit 1
+fi
+
+# Source directory command line option
+
+src_dir="."
+if ( test -n "$1" ); then
+  src_dir="$1"
+fi
+
+#-------------------------------------------------------------------------
+# Verify source directory
+#-------------------------------------------------------------------------
+# If the source directory is not a git working directory output a
+# question mark. A distribution will not be in a working directory, but
+# the build system should be structured such that this script is not
+# executed (and instead the version information should probably come
+# from configure). If the user does not specify a source directory use
+# the current directory.
+
+if !( git rev-parse --is-inside-work-tree &> /dev/null ); then
+  echo "?"
+  exit 1;
+fi
+
+top_dir=`git rev-parse --show-cdup`
+cd ./${top_dir}
+
+#-------------------------------------------------------------------------
+# Create the version string
+#-------------------------------------------------------------------------
+# See if we can do a describe based on a tag and if not use a default
+# release number of 0.0 so that we always get canonical version number
+
+if ( git describe --tags --match "rel-*" &> /dev/null ); then
+  ver_str=`git describe --tags --match "rel-*" | sed 's/rel-//'`
+else
+  ver_num="0.0"
+  ver_commits=`git rev-list --all | wc -l | tr -d " "`
+  ver_sha=`git describe --tags --match "rel-*" --always`
+  ver_str="${ver_num}-${ver_commits}-g${ver_sha}"
+fi
+
+# Add a dirty suffix if working directory is dirty
+
+if !( git diff --quiet ); then
+  ver_str="${ver_str}-dirty"
+else
+  untracked=`git ls-files --directory --exclude-standard --others -t`
+  if ( test -n "${untracked}" ); then
+    ver_str="${ver_str}-dirty"
+  fi  
+fi
+
+# Output the final version string
+
+echo "${ver_str}"
+
+# Final exit status
+
+exit 0;
+
diff --git a/softfloat/8086/OLD-specialize.c b/softfloat/8086/OLD-specialize.c
new file mode 100755
index 0000000..ffb306d
--- /dev/null
+++ b/softfloat/8086/OLD-specialize.c
@@ -0,0 +1,40 @@
+

+/*============================================================================

+

+*** FIX.

+

+This C source fragment is part of the SoftFloat IEC/IEEE Floating-point

+Arithmetic Package, Release 2b.

+

+Written by John R. Hauser.  This work was made possible in part by the

+International Computer Science Institute, located at Suite 600, 1947 Center

+Street, Berkeley, California 94704.  Funding was partially provided by the

+National Science Foundation under grant MIP-9311980.  The original version

+of this code was written as part of a project to build a fixed-point vector

+processor in collaboration with the University of California at Berkeley,

+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information

+is available through the Web page `http://www.cs.berkeley.edu/~jhauser/

+arithmetic/SoftFloat.html'.

+

+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has

+been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES

+RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS

+AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,

+COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE

+EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE

+INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR

+OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.

+

+Derivative works are acceptable, even for commercial purposes, so long as

+(1) the source code for the derivative work includes prominent notice that

+the work is derivative, and (2) the source code includes prominent notice with

+these four paragraphs for those parts of this code that are retained.

+

+=============================================================================*/

+

+/*----------------------------------------------------------------------------

+| Underflow tininess-detection mode, statically initialized to default value.

+| (The declaration in `softfloat.h' must match the `int8' type here.)

+*----------------------------------------------------------------------------*/

+bool float_detectTininess = float_tininess_afterRounding;

+

diff --git a/softfloat/8086/OLD-specialize.h b/softfloat/8086/OLD-specialize.h
new file mode 100755
index 0000000..9e4461c
--- /dev/null
+++ b/softfloat/8086/OLD-specialize.h
@@ -0,0 +1,379 @@
+

+/*============================================================================

+

+*** FIX.

+

+This C source fragment is part of the SoftFloat IEC/IEEE Floating-point

+Arithmetic Package, Release 2b.

+

+Written by John R. Hauser.  This work was made possible in part by the

+International Computer Science Institute, located at Suite 600, 1947 Center

+Street, Berkeley, California 94704.  Funding was partially provided by the

+National Science Foundation under grant MIP-9311980.  The original version

+of this code was written as part of a project to build a fixed-point vector

+processor in collaboration with the University of California at Berkeley,

+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information

+is available through the Web page `http://www.cs.berkeley.edu/~jhauser/

+arithmetic/SoftFloat.html'.

+

+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has

+been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES

+RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS

+AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,

+COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE

+EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE

+INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR

+OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.

+

+Derivative works are acceptable, even for commercial purposes, so long as

+(1) the source code for the derivative work includes prominent notice that

+the work is derivative, and (2) the source code includes prominent notice with

+these four paragraphs for those parts of this code that are retained.

+

+=============================================================================*/

+

+/*----------------------------------------------------------------------------

+| Internal canonical NaN format.

+*----------------------------------------------------------------------------*/

+*** COMMON

+typedef struct {

+    flag sign;

+    uint128_t bits;

+} commonNaNT;

+

+/*----------------------------------------------------------------------------

+| The pattern for a default generated single-precision NaN.

+*----------------------------------------------------------------------------*/

+#define float32Bits_defaultNaN 0xFFC00000

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the single-precision floating-point value `a' is a NaN;

+| otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+*** COMMON

+#define softfloat_isNaNFloat32Bits( a ) ( 0xFF000000 < (uint32_t) ( a )<<1 )

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the single-precision floating-point value `a' is a signaling

+| NaN; otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+inline bool softfloat_isSigNaNFloat32Bits( uint32_t a )

+    { return ( ( a>>22 & 0x1FF ) == 0x1FE ) && ( a & 0x003FFFFF ); }

+

+/*----------------------------------------------------------------------------

+*----------------------------------------------------------------------------*/

+commonNaNT softfloat_NaNFromFloat32Bits( uint32_t );

+uint32_t softfloat_float32BitsFromNaN( commonNaNT );

+uint32_t softfloat_propNaNFloat32Bits( uint32_t, uint32_t );

+

+/*----------------------------------------------------------------------------

+| The pattern for a default generated double-precision NaN.

+*----------------------------------------------------------------------------*/

+#define float64Bits_defaultNaN 0xFFF8000000000000

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the double-precision floating-point value `a' is a NaN;

+| otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+*** COMMON

+#define softfloat_isNaNFloat64Bits( a ) ( 0xFFE0000000000000 < (uint64_t) ( a )<<1 )

+

+

+

+

+

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the double-precision floating-point value `a' is a signaling

+| NaN; otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+

+flag float64_is_signaling_nan( float64 a )

+{

+

+    return

+           ( ( ( a>>51 ) & 0xFFF ) == 0xFFE )

+        && ( a & LIT64( 0x0007FFFFFFFFFFFF ) );

+

+}

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the double-precision floating-point NaN

+| `a' to the canonical NaN format.  If `a' is a signaling NaN, the invalid

+| exception is raised.

+*----------------------------------------------------------------------------*/

+

+static commonNaNT float64ToCommonNaN( float64 a )

+{

+    commonNaNT z;

+

+    if ( float64_is_signaling_nan( a ) ) float_raise( float_flag_invalid );

+    z.sign = a>>63;

+    z.low = 0;

+    z.high = a<<12;

+    return z;

+

+}

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the canonical NaN `a' to the double-

+| precision floating-point format.

+*----------------------------------------------------------------------------*/

+

+static float64 commonNaNToFloat64( commonNaNT a )

+{

+

+    return

+          ( ( (bits64) a.sign )<<63 )

+        | LIT64( 0x7FF8000000000000 )

+        | ( a.high>>12 );

+

+}

+

+/*----------------------------------------------------------------------------

+| Takes two double-precision floating-point values `a' and `b', one of which

+| is a NaN, and returns the appropriate NaN result.  If either `a' or `b' is a

+| signaling NaN, the invalid exception is raised.

+*----------------------------------------------------------------------------*/

+

+static float64 propagateFloat64NaN( float64 a, float64 b )

+{

+    flag aIsNaN, aIsSignalingNaN, bIsNaN, bIsSignalingNaN;

+

+    aIsNaN = float64_is_nan( a );

+    aIsSignalingNaN = float64_is_signaling_nan( a );

+    bIsNaN = float64_is_nan( b );

+    bIsSignalingNaN = float64_is_signaling_nan( b );

+    a |= LIT64( 0x0008000000000000 );

+    b |= LIT64( 0x0008000000000000 );

+    if ( aIsSignalingNaN | bIsSignalingNaN ) float_raise( float_flag_invalid );

+    if ( aIsSignalingNaN ) {

+        if ( bIsSignalingNaN ) goto returnLargerSignificand;

+        return bIsNaN ? b : a;

+    }

+    else if ( aIsNaN ) {

+        if ( bIsSignalingNaN | ! bIsNaN ) return a;

+ returnLargerSignificand:

+        if ( (bits64) ( a<<1 ) < (bits64) ( b<<1 ) ) return b;

+        if ( (bits64) ( b<<1 ) < (bits64) ( a<<1 ) ) return a;

+        return ( a < b ) ? a : b;

+    }

+    else {

+        return b;

+    }

+

+}

+

+#ifdef FLOATX80

+

+/*----------------------------------------------------------------------------

+| The pattern for a default generated extended double-precision NaN.  The

+| `high' and `low' values hold the most- and least-significant bits,

+| respectively.

+*----------------------------------------------------------------------------*/

+#define floatx80_default_nan_high 0xFFFF

+#define floatx80_default_nan_low  LIT64( 0xC000000000000000 )

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the extended double-precision floating-point value `a' is a

+| NaN; otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+

+flag floatx80_is_nan( floatx80 a )

+{

+

+    return ( ( a.high & 0x7FFF ) == 0x7FFF ) && (bits64) ( a.low<<1 );

+

+}

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the extended double-precision floating-point value `a' is a

+| signaling NaN; otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+

+flag floatx80_is_signaling_nan( floatx80 a )

+{

+    bits64 aLow;

+

+    aLow = a.low & ~ LIT64( 0x4000000000000000 );

+    return

+           ( ( a.high & 0x7FFF ) == 0x7FFF )

+        && (bits64) ( aLow<<1 )

+        && ( a.low == aLow );

+

+}

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the extended double-precision floating-

+| point NaN `a' to the canonical NaN format.  If `a' is a signaling NaN, the

+| invalid exception is raised.

+*----------------------------------------------------------------------------*/

+

+static commonNaNT floatx80ToCommonNaN( floatx80 a )

+{

+    commonNaNT z;

+

+    if ( floatx80_is_signaling_nan( a ) ) float_raise( float_flag_invalid );

+    z.sign = a.high>>15;

+    z.low = 0;

+    z.high = a.low<<1;

+    return z;

+

+}

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the canonical NaN `a' to the extended

+| double-precision floating-point format.

+*----------------------------------------------------------------------------*/

+

+static floatx80 commonNaNToFloatx80( commonNaNT a )

+{

+    floatx80 z;

+

+    z.low = LIT64( 0xC000000000000000 ) | ( a.high>>1 );

+    z.high = ( ( (bits16) a.sign )<<15 ) | 0x7FFF;

+    return z;

+

+}

+

+/*----------------------------------------------------------------------------

+| Takes two extended double-precision floating-point values `a' and `b', one

+| of which is a NaN, and returns the appropriate NaN result.  If either `a' or

+| `b' is a signaling NaN, the invalid exception is raised.

+*----------------------------------------------------------------------------*/

+

+static floatx80 propagateFloatx80NaN( floatx80 a, floatx80 b )

+{

+    flag aIsNaN, aIsSignalingNaN, bIsNaN, bIsSignalingNaN;

+

+    aIsNaN = floatx80_is_nan( a );

+    aIsSignalingNaN = floatx80_is_signaling_nan( a );

+    bIsNaN = floatx80_is_nan( b );

+    bIsSignalingNaN = floatx80_is_signaling_nan( b );

+    a.low |= LIT64( 0xC000000000000000 );

+    b.low |= LIT64( 0xC000000000000000 );

+    if ( aIsSignalingNaN | bIsSignalingNaN ) float_raise( float_flag_invalid );

+    if ( aIsSignalingNaN ) {

+        if ( bIsSignalingNaN ) goto returnLargerSignificand;

+        return bIsNaN ? b : a;

+    }

+    else if ( aIsNaN ) {

+        if ( bIsSignalingNaN | ! bIsNaN ) return a;

+ returnLargerSignificand:

+        if ( a.low < b.low ) return b;

+        if ( b.low < a.low ) return a;

+        return ( a.high < b.high ) ? a : b;

+    }

+    else {

+        return b;

+    }

+

+}

+

+#endif

+

+#ifdef FLOAT128

+

+/*----------------------------------------------------------------------------

+| The pattern for a default generated quadruple-precision NaN.  The `high' and

+| `low' values hold the most- and least-significant bits, respectively.

+*----------------------------------------------------------------------------*/

+#define float128_default_nan_high LIT64( 0xFFFF800000000000 )

+#define float128_default_nan_low  LIT64( 0x0000000000000000 )

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the quadruple-precision floating-point value `a' is a NaN;

+| otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+

+flag float128_is_nan( float128 a )

+{

+

+    return

+           ( LIT64( 0xFFFE000000000000 ) <= (bits64) ( a.high<<1 ) )

+        && ( a.low || ( a.high & LIT64( 0x0000FFFFFFFFFFFF ) ) );

+

+}

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the quadruple-precision floating-point value `a' is a

+| signaling NaN; otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+

+flag float128_is_signaling_nan( float128 a )

+{

+

+    return

+           ( ( ( a.high>>47 ) & 0xFFFF ) == 0xFFFE )

+        && ( a.low || ( a.high & LIT64( 0x00007FFFFFFFFFFF ) ) );

+

+}

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the quadruple-precision floating-point NaN

+| `a' to the canonical NaN format.  If `a' is a signaling NaN, the invalid

+| exception is raised.

+*----------------------------------------------------------------------------*/

+

+static commonNaNT float128ToCommonNaN( float128 a )

+{

+    commonNaNT z;

+

+    if ( float128_is_signaling_nan( a ) ) float_raise( float_flag_invalid );

+    z.sign = a.high>>63;

+    shortShift128Left( a.high, a.low, 16, &z.high, &z.low );

+    return z;

+

+}

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the canonical NaN `a' to the quadruple-

+| precision floating-point format.

+*----------------------------------------------------------------------------*/

+

+static float128 commonNaNToFloat128( commonNaNT a )

+{

+    float128 z;

+

+    shift128Right( a.high, a.low, 16, &z.high, &z.low );

+    z.high |= ( ( (bits64) a.sign )<<63 ) | LIT64( 0x7FFF800000000000 );

+    return z;

+

+}

+

+/*----------------------------------------------------------------------------

+| Takes two quadruple-precision floating-point values `a' and `b', one of

+| which is a NaN, and returns the appropriate NaN result.  If either `a' or

+| `b' is a signaling NaN, the invalid exception is raised.

+*----------------------------------------------------------------------------*/

+

+static float128 propagateFloat128NaN( float128 a, float128 b )

+{

+    flag aIsNaN, aIsSignalingNaN, bIsNaN, bIsSignalingNaN;

+

+    aIsNaN = float128_is_nan( a );

+    aIsSignalingNaN = float128_is_signaling_nan( a );

+    bIsNaN = float128_is_nan( b );

+    bIsSignalingNaN = float128_is_signaling_nan( b );

+    a.high |= LIT64( 0x0000800000000000 );

+    b.high |= LIT64( 0x0000800000000000 );

+    if ( aIsSignalingNaN | bIsSignalingNaN ) float_raise( float_flag_invalid );

+    if ( aIsSignalingNaN ) {

+        if ( bIsSignalingNaN ) goto returnLargerSignificand;

+        return bIsNaN ? b : a;

+    }

+    else if ( aIsNaN ) {

+        if ( bIsSignalingNaN | ! bIsNaN ) return a;

+ returnLargerSignificand:

+        if ( lt128( a.high<<1, a.low, b.high<<1, b.low ) ) return b;

+        if ( lt128( b.high<<1, b.low, a.high<<1, a.low ) ) return a;

+        return ( a.high < b.high ) ? a : b;

+    }

+    else {

+        return b;

+    }

+

+}

+

+#endif

+

diff --git a/softfloat/8086/platform.h b/softfloat/8086/platform.h
new file mode 100755
index 0000000..9355edf
--- /dev/null
+++ b/softfloat/8086/platform.h
@@ -0,0 +1,38 @@
+
+/*============================================================================
+
+*** FIX.
+
+This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
+Arithmetic Package, Release 2b.
+
+Written by John R. Hauser.  This work was made possible in part by the
+International Computer Science Institute, located at Suite 600, 1947 Center
+Street, Berkeley, California 94704.  Funding was partially provided by the
+National Science Foundation under grant MIP-9311980.  The original version
+of this code was written as part of a project to build a fixed-point vector
+processor in collaboration with the University of California at Berkeley,
+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
+is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
+arithmetic/SoftFloat.html'.
+
+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has
+been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
+RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
+AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
+COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
+EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
+INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
+OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
+
+Derivative works are acceptable, even for commercial purposes, so long as
+(1) the source code for the derivative work includes prominent notice that
+the work is derivative, and (2) the source code includes prominent notice with
+these four paragraphs for those parts of this code that are retained.
+
+=============================================================================*/
+
+/*----------------------------------------------------------------------------
+*----------------------------------------------------------------------------*/
+#define LITTLEENDIAN
+
diff --git a/softfloat/8086/s_commonNaNToF32UI.c b/softfloat/8086/s_commonNaNToF32UI.c
new file mode 100755
index 0000000..3b96c41
--- /dev/null
+++ b/softfloat/8086/s_commonNaNToF32UI.c
@@ -0,0 +1,17 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "specialize.h"

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the canonical NaN `a' to the single-

+| precision floating-point format.

+*----------------------------------------------------------------------------*/

+

+uint_fast32_t softfloat_commonNaNToF32UI( struct commonNaN a )

+{

+

+    return (uint_fast32_t) a.sign<<31 | 0x7FC00000 | a.v64>>41;

+

+}

+

diff --git a/softfloat/8086/s_commonNaNToF64UI.c b/softfloat/8086/s_commonNaNToF64UI.c
new file mode 100755
index 0000000..474ceee
--- /dev/null
+++ b/softfloat/8086/s_commonNaNToF64UI.c
@@ -0,0 +1,19 @@
+
+#include <stdint.h>
+#include "platform.h"
+#include "specialize.h"
+
+/*----------------------------------------------------------------------------
+| Returns the result of converting the canonical NaN `a' to the double-
+| precision floating-point format.
+*----------------------------------------------------------------------------*/
+
+uint_fast64_t softfloat_commonNaNToF64UI( struct commonNaN a )
+{
+
+    return
+        (uint_fast64_t) a.sign<<63 | UINT64_C( 0x7FF8000000000000 )
+            | a.v64>>12;
+
+}
+
diff --git a/softfloat/8086/s_f32UIToCommonNaN.c b/softfloat/8086/s_f32UIToCommonNaN.c
new file mode 100755
index 0000000..067e8da
--- /dev/null
+++ b/softfloat/8086/s_f32UIToCommonNaN.c
@@ -0,0 +1,25 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the single-precision floating-point NaN

+| `a' to the canonical NaN format.  If `a' is a signaling NaN, the invalid

+| exception is raised.

+*----------------------------------------------------------------------------*/

+struct commonNaN softfloat_f32UIToCommonNaN( uint_fast32_t uiA )

+{

+    struct commonNaN z;

+

+    if ( softfloat_isSigNaNF32UI( uiA ) ) {

+        softfloat_raiseFlags( softfloat_flag_invalid );

+    }

+    z.sign = uiA>>31;

+    z.v64 = (uint_fast64_t) uiA<<41;

+    z.v0 = 0;

+    return z;

+

+}

+

diff --git a/softfloat/8086/s_f64UIToCommonNaN.c b/softfloat/8086/s_f64UIToCommonNaN.c
new file mode 100755
index 0000000..f933ded
--- /dev/null
+++ b/softfloat/8086/s_f64UIToCommonNaN.c
@@ -0,0 +1,25 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the double-precision floating-point NaN

+| `a' to the canonical NaN format.  If `a' is a signaling NaN, the invalid

+| exception is raised.

+*----------------------------------------------------------------------------*/

+struct commonNaN softfloat_f64UIToCommonNaN( uint_fast64_t uiA )

+{

+    struct commonNaN z;

+

+    if ( softfloat_isSigNaNF64UI( uiA ) ) {

+        softfloat_raiseFlags( softfloat_flag_invalid );

+    }

+    z.sign = uiA>>63;

+    z.v64 = uiA<<12;

+    z.v0 = 0;

+    return z;

+

+}

+

diff --git a/softfloat/8086/s_isSigNaNF32UI.c b/softfloat/8086/s_isSigNaNF32UI.c
new file mode 100755
index 0000000..0a9c33f
--- /dev/null
+++ b/softfloat/8086/s_isSigNaNF32UI.c
@@ -0,0 +1,13 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "specialize.h"
+
+bool softfloat_isSigNaNF32UI( uint_fast32_t ui )
+{
+
+    return ( ( ui>>22 & 0x1FF ) == 0x1FE ) && ( ui & 0x003FFFFF );
+
+}
+
diff --git a/softfloat/8086/s_isSigNaNF64UI.c b/softfloat/8086/s_isSigNaNF64UI.c
new file mode 100755
index 0000000..d255213
--- /dev/null
+++ b/softfloat/8086/s_isSigNaNF64UI.c
@@ -0,0 +1,15 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "specialize.h"
+
+bool softfloat_isSigNaNF64UI( uint_fast64_t ui )
+{
+
+    return
+        ( ( ui>>51 & 0xFFF ) == 0xFFE )
+            && ( ui & UINT64_C( 0x0007FFFFFFFFFFFF ) );
+
+}
+
diff --git a/softfloat/8086/s_propagateNaNF32UI.c b/softfloat/8086/s_propagateNaNF32UI.c
new file mode 100755
index 0000000..07774e8
--- /dev/null
+++ b/softfloat/8086/s_propagateNaNF32UI.c
@@ -0,0 +1,55 @@
+

+/*** UPDATE COMMENTS. ***/

+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+/*----------------------------------------------------------------------------

+| Takes two single-precision floating-point values `a' and `b', one of which

+| is a NaN, and returns the appropriate NaN result.  If either `a' or `b' is a

+| signaling NaN, the invalid exception is raised.

+*----------------------------------------------------------------------------*/

+

+uint_fast32_t

+ softfloat_propagateNaNF32UI( uint_fast32_t uiA, uint_fast32_t uiB )

+{

+    bool isNaNA, isSigNaNA, isNaNB, isSigNaNB;

+    uint_fast32_t uiMagA, uiMagB;

+

+    /*------------------------------------------------------------------------

+    *------------------------------------------------------------------------*/

+    isNaNA = isNaNF32UI( uiA );

+    isSigNaNA = softfloat_isSigNaNF32UI( uiA );

+    isNaNB = isNaNF32UI( uiB );

+    isSigNaNB = softfloat_isSigNaNF32UI( uiB );

+    /*------------------------------------------------------------------------

+    | Make NaNs non-signaling.

+    *------------------------------------------------------------------------*/

+    uiA |= 0x00400000;

+    uiB |= 0x00400000;

+    /*------------------------------------------------------------------------

+    *------------------------------------------------------------------------*/

+    if ( isSigNaNA | isSigNaNB ) {

+        softfloat_raiseFlags( softfloat_flag_invalid );

+    }

+    if ( isSigNaNA ) {

+        if ( isSigNaNB ) goto returnLargerSignificand;

+        return isNaNB ? uiB : uiA;

+    } else if ( isNaNA ) {

+        if ( isSigNaNB || ! isNaNB ) return uiA;

+ returnLargerSignificand:

+        uiMagA = uiA<<1;

+        uiMagB = uiB<<1;

+        if ( uiMagA < uiMagB ) return uiB;

+        if ( uiMagB < uiMagA ) return uiA;

+        return ( uiA < uiB ) ? uiA : uiB;

+    } else {

+        return uiB;

+    }

+

+}

+

diff --git a/softfloat/8086/s_propagateNaNF64UI.c b/softfloat/8086/s_propagateNaNF64UI.c
new file mode 100755
index 0000000..0ff6446
--- /dev/null
+++ b/softfloat/8086/s_propagateNaNF64UI.c
@@ -0,0 +1,55 @@
+
+/*** UPDATE COMMENTS. ***/
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+/*----------------------------------------------------------------------------
+| Takes two double-precision floating-point values `a' and `b', one of which
+| is a NaN, and returns the appropriate NaN result.  If either `a' or `b' is a
+| signaling NaN, the invalid exception is raised.
+*----------------------------------------------------------------------------*/
+
+uint_fast64_t
+ softfloat_propagateNaNF64UI( uint_fast64_t uiA, uint_fast64_t uiB )
+{
+    bool isNaNA, isSigNaNA, isNaNB, isSigNaNB;
+    uint_fast64_t uiMagA, uiMagB;
+
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    isNaNA = isNaNF64UI( uiA );
+    isSigNaNA = softfloat_isSigNaNF64UI( uiA );
+    isNaNB = isNaNF64UI( uiB );
+    isSigNaNB = softfloat_isSigNaNF64UI( uiB );
+    /*------------------------------------------------------------------------
+    | Make NaNs non-signaling.
+    *------------------------------------------------------------------------*/
+    uiA |= UINT64_C( 0x0008000000000000 );
+    uiB |= UINT64_C( 0x0008000000000000 );
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    if ( isSigNaNA | isSigNaNB ) {
+        softfloat_raiseFlags( softfloat_flag_invalid );
+    }
+    if ( isSigNaNA ) {
+        if ( isSigNaNB ) goto returnLargerSignificand;
+        return isNaNB ? uiB : uiA;
+    } else if ( isNaNA ) {
+        if ( isSigNaNB || ! isNaNB ) return uiA;
+ returnLargerSignificand:
+        uiMagA = uiA & UINT64_C( 0x7FFFFFFFFFFFFFFF );
+        uiMagB = uiB & UINT64_C( 0x7FFFFFFFFFFFFFFF );
+        if ( uiMagA < uiMagB ) return uiB;
+        if ( uiMagB < uiMagA ) return uiA;
+        return ( uiA < uiB ) ? uiA : uiB;
+    } else {
+        return uiB;
+    }
+
+}
+
diff --git a/softfloat/8086/softfloat_raiseFlags.c b/softfloat/8086/softfloat_raiseFlags.c
new file mode 100755
index 0000000..c0c0dc8
--- /dev/null
+++ b/softfloat/8086/softfloat_raiseFlags.c
@@ -0,0 +1,51 @@
+
+/*============================================================================
+
+*** FIX.
+
+This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
+Arithmetic Package, Release 2b.
+
+Written by John R. Hauser.  This work was made possible in part by the
+International Computer Science Institute, located at Suite 600, 1947 Center
+Street, Berkeley, California 94704.  Funding was partially provided by the
+National Science Foundation under grant MIP-9311980.  The original version
+of this code was written as part of a project to build a fixed-point vector
+processor in collaboration with the University of California at Berkeley,
+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
+is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
+arithmetic/SoftFloat.html'.
+
+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has
+been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
+RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
+AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
+COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
+EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
+INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
+OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
+
+Derivative works are acceptable, even for commercial purposes, so long as
+(1) the source code for the derivative work includes prominent notice that
+the work is derivative, and (2) the source code includes prominent notice with
+these four paragraphs for those parts of this code that are retained.
+
+=============================================================================*/
+
+#include "platform.h"
+#include "softfloat.h"
+
+/*----------------------------------------------------------------------------
+| Raises the exceptions specified by `flags'.  Floating-point traps can be
+| defined here if desired.  It is currently not possible for such a trap
+| to substitute a result value.  If traps are not implemented, this routine
+| should be simply `float_exception_flags |= flags;'.
+*----------------------------------------------------------------------------*/
+
+void softfloat_raiseFlags( int_fast8_t flags )
+{
+
+    softfloat_exceptionFlags |= flags;
+
+}
+
diff --git a/softfloat/8086/softfloat_types.h b/softfloat/8086/softfloat_types.h
new file mode 100755
index 0000000..b5c1828
--- /dev/null
+++ b/softfloat/8086/softfloat_types.h
@@ -0,0 +1,16 @@
+
+#ifndef softfloat_types_h
+#define softfloat_types_h
+
+/*** COMMENTS. ***/
+
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef struct { uint32_t v; } float32_t;
+typedef struct { uint64_t v; } float64_t;
+typedef struct { uint64_t v; uint16_t x; } floatx80_t;
+typedef struct { uint64_t v[ 2 ]; } float128_t;
+
+#endif
+
diff --git a/softfloat/8086/specialize.h b/softfloat/8086/specialize.h
new file mode 100755
index 0000000..ca0bb1d
--- /dev/null
+++ b/softfloat/8086/specialize.h
@@ -0,0 +1,113 @@
+

+/*============================================================================

+

+*** FIX.

+

+This C source fragment is part of the SoftFloat IEC/IEEE Floating-point

+Arithmetic Package, Release 2b.

+

+Written by John R. Hauser.  This work was made possible in part by the

+International Computer Science Institute, located at Suite 600, 1947 Center

+Street, Berkeley, California 94704.  Funding was partially provided by the

+National Science Foundation under grant MIP-9311980.  The original version

+of this code was written as part of a project to build a fixed-point vector

+processor in collaboration with the University of California at Berkeley,

+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information

+is available through the Web page `http://www.cs.berkeley.edu/~jhauser/

+arithmetic/SoftFloat.html'.

+

+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has

+been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES

+RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS

+AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,

+COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE

+EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE

+INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR

+OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.

+

+Derivative works are acceptable, even for commercial purposes, so long as

+(1) the source code for the derivative work includes prominent notice that

+the work is derivative, and (2) the source code includes prominent notice with

+these four paragraphs for those parts of this code that are retained.

+

+=============================================================================*/

+

+#include <stdbool.h>

+#include <stdint.h>

+

+/*----------------------------------------------------------------------------

+*----------------------------------------------------------------------------*/

+#define init_detectTininess softfloat_tininess_afterRounding;

+

+/*----------------------------------------------------------------------------

+| Structure used to transfer NaN representations from one format to another.

+*----------------------------------------------------------------------------*/

+struct commonNaN {

+    bool sign;

+    uint64_t v64, v0;

+};

+

+/*----------------------------------------------------------------------------

+| The pattern for a default generated single-precision NaN.

+*----------------------------------------------------------------------------*/

+#define defaultNaNF32UI 0xFFC00000

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the single-precision floating-point value `a' is a signaling

+| NaN; otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+#if defined INLINE_LEVEL && ( 1 <= INLINE_LEVEL )

+INLINE bool softfloat_isSigNaNF32UI( uint_fast32_t ui )

+    { return ( ( ui>>22 & 0x1FF ) == 0x1FE ) && ( ui & 0x003FFFFF ); }

+#else

+bool softfloat_isSigNaNF32UI( uint_fast32_t );

+#endif

+

+/*----------------------------------------------------------------------------

+*----------------------------------------------------------------------------*/

+struct commonNaN softfloat_f32UIToCommonNaN( uint_fast32_t );

+#if defined INLINE_LEVEL && ( 1 <= INLINE_LEVEL )

+INLINE uint_fast32_t softfloat_commonNaNToF32UI( struct commonNaN a )

+    { return (uint_fast32_t) a.sign<<31 | 0x7FC00000 | a.v64>>41; }

+#else

+uint_fast32_t softfloat_commonNaNToF32UI( struct commonNaN );

+#endif

+

+/*----------------------------------------------------------------------------

+| Takes two single-precision floating-point values `a' and `b', one of which

+| is a NaN, and returns the appropriate NaN result.  If either `a' or `b' is a

+| signaling NaN, the invalid exception is raised.

+*----------------------------------------------------------------------------*/

+uint_fast32_t softfloat_propagateNaNF32UI( uint_fast32_t, uint_fast32_t );

+

+/*----------------------------------------------------------------------------

+| The pattern for a default generated double-precision NaN.

+*----------------------------------------------------------------------------*/

+#define defaultNaNF64UI UINT64_C(0xFFF8000000000000)

+

+/*----------------------------------------------------------------------------

+*----------------------------------------------------------------------------*/

+#if defined INLINE_LEVEL && ( 1 <= INLINE_LEVEL )

+INLINE bool softfloat_isSigNaNF64UI( uint_fast64_t ui )

+{

+    return

+        ( ( ui>>51 & 0xFFF ) == 0xFFE )

+            && ( ui & UINT64_C( 0x0007FFFFFFFFFFFF ) );

+}

+#else

+bool softfloat_isSigNaNF64UI( uint_fast64_t );

+#endif

+

+/*----------------------------------------------------------------------------

+*----------------------------------------------------------------------------*/

+/*** MIGHT BE INLINE'D. ***/

+struct commonNaN softfloat_f64UIToCommonNaN( uint_fast64_t );

+uint_fast64_t softfloat_commonNaNToF64UI( struct commonNaN );

+

+/*----------------------------------------------------------------------------

+| Takes two double-precision floating-point values `a' and `b', one of which

+| is a NaN, and returns the appropriate NaN result.  If either `a' or `b' is a

+| signaling NaN, the invalid exception is raised.

+*----------------------------------------------------------------------------*/

+uint_fast64_t softfloat_propagateNaNF64UI( uint_fast64_t, uint_fast64_t );

+

diff --git a/softfloat/f32_add.c b/softfloat/f32_add.c
new file mode 100755
index 0000000..dc53d68
--- /dev/null
+++ b/softfloat/f32_add.c
@@ -0,0 +1,29 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+float32_t f32_add( float32_t a, float32_t b )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    bool signA;
+    union ui32_f32 uB;
+    uint_fast32_t uiB;
+    bool signB;
+    float32_t ( *magsRoutine )( uint_fast32_t, uint_fast32_t, bool );
+
+    uA.f = a;
+    uiA = uA.ui;
+    signA = signF32UI( uiA );
+    uB.f = b;
+    uiB = uB.ui;
+    signB = signF32UI( uiB );
+    magsRoutine =
+        ( signA == signB ) ? softfloat_addMagsF32 : softfloat_subMagsF32;
+    return magsRoutine( uiA, uiB, signA );
+
+}
+
diff --git a/softfloat/f32_div.c b/softfloat/f32_div.c
new file mode 100755
index 0000000..958b140
--- /dev/null
+++ b/softfloat/f32_div.c
@@ -0,0 +1,96 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+float32_t f32_div( float32_t a, float32_t b )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    bool signA;
+    int_fast16_t expA;
+    uint_fast32_t sigA;
+    union ui32_f32 uB;
+    uint_fast32_t uiB;
+    bool signB;
+    int_fast16_t expB;
+    uint_fast32_t sigB;
+    bool signZ;
+    struct exp16_sig32 normExpSig;
+    int_fast16_t expZ;
+    uint_fast32_t sigZ;
+    uint_fast32_t uiZ;
+    union ui32_f32 uZ;
+
+    uA.f = a;
+    uiA = uA.ui;
+    signA = signF32UI( uiA );
+    expA = expF32UI( uiA );
+    sigA = fracF32UI( uiA );
+    uB.f = b;
+    uiB = uB.ui;
+    signB = signF32UI( uiB );
+    expB = expF32UI( uiB );
+    sigB = fracF32UI( uiB );
+    signZ = signA ^ signB;
+    if ( expA == 0xFF ) {
+        if ( sigA ) goto propagateNaN;
+        if ( expB == 0xFF ) {
+            if ( sigB ) goto propagateNaN;
+            goto invalid;
+        }
+        goto infinity;
+    }
+    if ( expB == 0xFF ) {
+        if ( sigB ) goto propagateNaN;
+        goto zero;
+    }
+    if ( ! expB ) {
+        if ( ! sigB ) {
+            if ( ! ( expA | sigA ) ) goto invalid;
+            softfloat_raiseFlags( softfloat_flag_infinity );
+            goto infinity;
+        }
+        normExpSig = softfloat_normSubnormalF32Sig( sigB );
+        expB = normExpSig.exp;
+        sigB = normExpSig.sig;
+    }
+    if ( ! expA ) {
+        if ( ! sigA ) goto zero;
+        normExpSig = softfloat_normSubnormalF32Sig( sigA );
+        expA = normExpSig.exp;
+        sigA = normExpSig.sig;
+    }
+    expZ = expA - expB + 0x7D;
+    sigA = ( sigA | 0x00800000 )<<7;
+    sigB = ( sigB | 0x00800000 )<<8;
+    if ( sigB <= ( sigA + sigA ) ) {
+        ++expZ;
+        sigA >>= 1;
+    }
+    sigZ = ( (uint_fast64_t) sigA<<32 ) / sigB;
+    if ( ! ( sigZ & 0x3F ) ) {
+        sigZ |= ( (uint_fast64_t) sigB * sigZ != (uint_fast64_t) sigA<<32 );
+    }
+    return softfloat_roundPackToF32( signZ, expZ, sigZ );
+ propagateNaN:
+    uiZ = softfloat_propagateNaNF32UI( uiA, uiB );
+    goto uiZ;
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    uiZ = defaultNaNF32UI;
+    goto uiZ;
+ infinity:
+    uiZ = packToF32UI( signZ, 0xFF, 0 );
+    goto uiZ;
+ zero:
+    uiZ = packToF32UI( signZ, 0, 0 );
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
diff --git a/softfloat/f32_eq.c b/softfloat/f32_eq.c
new file mode 100755
index 0000000..8f2306b
--- /dev/null
+++ b/softfloat/f32_eq.c
@@ -0,0 +1,34 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+bool f32_eq( float32_t a, float32_t b )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    union ui32_f32 uB;
+    uint_fast32_t uiB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF32UI( uiA ) == 0xFF ) && fracF32UI( uiA ) )
+        || ( ( expF32UI( uiB ) == 0xFF ) && fracF32UI( uiB ) )
+    ) {
+        if (
+            softfloat_isSigNaNF32UI( uiA ) || softfloat_isSigNaNF32UI( uiB )
+        ) {
+            softfloat_raiseFlags( softfloat_flag_invalid );
+        }
+        return false;
+    }
+    return ( uiA == uiB ) || ! (uint32_t) ( ( uiA | uiB )<<1 );
+
+}
+
diff --git a/softfloat/f32_eq_signaling.c b/softfloat/f32_eq_signaling.c
new file mode 100755
index 0000000..bfba48a
--- /dev/null
+++ b/softfloat/f32_eq_signaling.c
@@ -0,0 +1,29 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+bool f32_eq_signaling( float32_t a, float32_t b )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    union ui32_f32 uB;
+    uint_fast32_t uiB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF32UI( uiA ) == 0xFF ) && fracF32UI( uiA ) )
+        || ( ( expF32UI( uiB ) == 0xFF ) && fracF32UI( uiB ) )
+    ) {
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        return false;
+    }
+    return ( uiA == uiB ) || ! (uint32_t) ( ( uiA | uiB )<<1 );
+
+}
+
diff --git a/softfloat/f32_isSignalingNaN.c b/softfloat/f32_isSignalingNaN.c
new file mode 100755
index 0000000..09aaa82
--- /dev/null
+++ b/softfloat/f32_isSignalingNaN.c
@@ -0,0 +1,16 @@
+
+#include <stdbool.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+bool f32_isSignalingNaN( float32_t a )
+{
+    union ui32_f32 uA;
+
+    uA.f = a;
+    return softfloat_isSigNaNF32UI( uA.ui );
+
+}
+
diff --git a/softfloat/f32_le.c b/softfloat/f32_le.c
new file mode 100755
index 0000000..5f47be5
--- /dev/null
+++ b/softfloat/f32_le.c
@@ -0,0 +1,34 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+bool f32_le( float32_t a, float32_t b )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    union ui32_f32 uB;
+    uint_fast32_t uiB;
+    bool signA, signB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF32UI( uiA ) == 0xFF ) && fracF32UI( uiA ) )
+        || ( ( expF32UI( uiB ) == 0xFF ) && fracF32UI( uiB ) )
+    ) {
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        return false;
+    }
+    signA = signF32UI( uiA );
+    signB = signF32UI( uiB );
+    return
+        ( signA != signB ) ? signA || ! (uint32_t) ( ( uiA | uiB )<<1 )
+            : ( uiA == uiB ) || ( signA ^ ( uiA < uiB ) );
+
+}
+
diff --git a/softfloat/f32_le_quiet.c b/softfloat/f32_le_quiet.c
new file mode 100755
index 0000000..2b541da
--- /dev/null
+++ b/softfloat/f32_le_quiet.c
@@ -0,0 +1,39 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+bool f32_le_quiet( float32_t a, float32_t b )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    union ui32_f32 uB;
+    uint_fast32_t uiB;
+    bool signA, signB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF32UI( uiA ) == 0xFF ) && fracF32UI( uiA ) )
+        || ( ( expF32UI( uiB ) == 0xFF ) && fracF32UI( uiB ) )
+    ) {
+        if (
+            softfloat_isSigNaNF32UI( uiA ) || softfloat_isSigNaNF32UI( uiB )
+        ) {
+            softfloat_raiseFlags( softfloat_flag_invalid );
+        }
+        return false;
+    }
+    signA = signF32UI( uiA );
+    signB = signF32UI( uiB );
+    return
+        ( signA != signB ) ? signA || ! (uint32_t) ( ( uiA | uiB )<<1 )
+            : ( uiA == uiB ) || ( signA ^ ( uiA < uiB ) );
+
+}
+
diff --git a/softfloat/f32_lt.c b/softfloat/f32_lt.c
new file mode 100755
index 0000000..753b28a
--- /dev/null
+++ b/softfloat/f32_lt.c
@@ -0,0 +1,34 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+bool f32_lt( float32_t a, float32_t b )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    union ui32_f32 uB;
+    uint_fast32_t uiB;
+    bool signA, signB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF32UI( uiA ) == 0xFF ) && fracF32UI( uiA ) )
+        || ( ( expF32UI( uiB ) == 0xFF ) && fracF32UI( uiB ) )
+    ) {
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        return false;
+    }
+    signA = signF32UI( uiA );
+    signB = signF32UI( uiB );
+    return
+        ( signA != signB ) ? signA && ( (uint32_t) ( ( uiA | uiB )<<1 ) != 0 )
+            : ( uiA != uiB ) && ( signA ^ ( uiA < uiB ) );
+
+}
+
diff --git a/softfloat/f32_lt_quiet.c b/softfloat/f32_lt_quiet.c
new file mode 100755
index 0000000..ecd90bf
--- /dev/null
+++ b/softfloat/f32_lt_quiet.c
@@ -0,0 +1,39 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+bool f32_lt_quiet( float32_t a, float32_t b )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    union ui32_f32 uB;
+    uint_fast32_t uiB;
+    bool signA, signB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF32UI( uiA ) == 0xFF ) && fracF32UI( uiA ) )
+        || ( ( expF32UI( uiB ) == 0xFF ) && fracF32UI( uiB ) )
+    ) {
+        if (
+            softfloat_isSigNaNF32UI( uiA ) || softfloat_isSigNaNF32UI( uiB )
+        ) {
+            softfloat_raiseFlags( softfloat_flag_invalid );
+        }
+        return false;
+    }
+    signA = signF32UI( uiA );
+    signB = signF32UI( uiB );
+    return
+        ( signA != signB ) ? signA && ( (uint32_t) ( ( uiA | uiB )<<1 ) != 0 )
+            : ( uiA != uiB ) && ( signA ^ ( uiA < uiB ) );
+
+}
+
diff --git a/softfloat/f32_mul.c b/softfloat/f32_mul.c
new file mode 100755
index 0000000..d49c1dd
--- /dev/null
+++ b/softfloat/f32_mul.c
@@ -0,0 +1,89 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+float32_t f32_mul( float32_t a, float32_t b )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    bool signA;

+    int_fast16_t expA;

+    uint_fast32_t sigA;

+    union ui32_f32 uB;

+    uint_fast32_t uiB;

+    bool signB;

+    int_fast16_t expB;

+    uint_fast32_t sigB;

+    bool signZ;

+    uint_fast32_t magBits;

+    struct exp16_sig32 normExpSig;

+    int_fast16_t expZ;

+    uint_fast32_t sigZ, uiZ;

+    union ui32_f32 uZ;

+

+    uA.f = a;

+    uiA = uA.ui;

+    signA = signF32UI( uiA );

+    expA = expF32UI( uiA );

+    sigA = fracF32UI( uiA );

+    uB.f = b;

+    uiB = uB.ui;

+    signB = signF32UI( uiB );

+    expB = expF32UI( uiB );

+    sigB = fracF32UI( uiB );

+    signZ = signA ^ signB;

+    if ( expA == 0xFF ) {

+        if ( sigA || ( ( expB == 0xFF ) && sigB ) ) goto propagateNaN;

+        magBits = expB | sigB;

+        goto infArg;

+    }

+    if ( expB == 0xFF ) {

+        if ( sigB ) goto propagateNaN;

+        magBits = expA | sigA;

+        goto infArg;

+    }

+    if ( ! expA ) {

+        if ( ! sigA ) goto zero;

+        normExpSig = softfloat_normSubnormalF32Sig( sigA );

+        expA = normExpSig.exp;

+        sigA = normExpSig.sig;

+    }

+    if ( ! expB ) {

+        if ( ! sigB ) goto zero;

+        normExpSig = softfloat_normSubnormalF32Sig( sigB );

+        expB = normExpSig.exp;

+        sigB = normExpSig.sig;

+    }

+    expZ = expA + expB - 0x7F;

+    sigA = ( sigA | 0x00800000 )<<7;

+    sigB = ( sigB | 0x00800000 )<<8;

+    sigZ = softfloat_shortShift64RightJam( (uint_fast64_t) sigA * sigB, 32 );

+    if ( sigZ < 0x40000000 ) {

+        --expZ;

+        sigZ <<= 1;

+    }

+    return softfloat_roundPackToF32( signZ, expZ, sigZ );

+ propagateNaN:

+    uiZ = softfloat_propagateNaNF32UI( uiA, uiB );

+    goto uiZ;

+ infArg:

+    if ( ! magBits ) {

+        softfloat_raiseFlags( softfloat_flag_invalid );

+        uiZ = defaultNaNF32UI;

+    } else {

+        uiZ = packToF32UI( signZ, 0xFF, 0 );

+    }

+    goto uiZ;

+ zero:

+    uiZ = packToF32UI( signZ, 0, 0 );

+ uiZ:

+    uZ.ui = uiZ;

+    return uZ.f;

+

+}

+

diff --git a/softfloat/f32_mulAdd.c b/softfloat/f32_mulAdd.c
new file mode 100755
index 0000000..3d4cee9
--- /dev/null
+++ b/softfloat/f32_mulAdd.c
@@ -0,0 +1,25 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+float32_t f32_mulAdd( float32_t a, float32_t b, float32_t c )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    union ui32_f32 uB;

+    uint_fast32_t uiB;

+    union ui32_f32 uC;

+    uint_fast32_t uiC;

+

+    uA.f = a;

+    uiA = uA.ui;

+    uB.f = b;

+    uiB = uB.ui;

+    uC.f = c;

+    uiC = uC.ui;

+    return softfloat_mulAddF32( 0, uiA, uiB, uiC );

+

+}

+

diff --git a/softfloat/f32_rem.c b/softfloat/f32_rem.c
new file mode 100755
index 0000000..d29b840
--- /dev/null
+++ b/softfloat/f32_rem.c
@@ -0,0 +1,124 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+float32_t f32_rem( float32_t a, float32_t b )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    bool signA;
+    int_fast16_t expA;
+    uint_fast32_t sigA;
+    union ui32_f32 uB;
+    uint_fast32_t uiB;
+    bool signB;
+    int_fast16_t expB;
+    uint_fast32_t sigB;
+    struct exp16_sig32 normExpSig;
+    int_fast16_t expDiff;
+    uint_fast32_t q;
+    uint_fast64_t sigA64, sigB64, q64;
+    uint_fast32_t alternateSigA;
+    uint32_t sigMean;
+    bool signZ;
+    uint_fast32_t uiZ;
+    union ui32_f32 uZ;
+
+    uA.f = a;
+    uiA = uA.ui;
+    signA = signF32UI( uiA );
+    expA = expF32UI( uiA );
+    sigA = fracF32UI( uiA );
+    uB.f = b;
+    uiB = uB.ui;
+    signB = signF32UI( uiB );
+    expB = expF32UI( uiB );
+    sigB = fracF32UI( uiB );
+    if ( expA == 0xFF ) {
+        if ( sigA || ( ( expB == 0xFF ) && sigB ) ) goto propagateNaN;
+        goto invalid;
+    }
+    if ( expB == 0xFF ) {
+        if ( sigB ) goto propagateNaN;
+        return a;
+    }
+    if ( ! expB ) {
+        if ( ! sigB ) goto invalid;
+        normExpSig = softfloat_normSubnormalF32Sig( sigB );
+        expB = normExpSig.exp;
+        sigB = normExpSig.sig;
+    }
+    if ( ! expA ) {
+        if ( ! sigA ) return a;
+        normExpSig = softfloat_normSubnormalF32Sig( sigA );
+        expA = normExpSig.exp;
+        sigA = normExpSig.sig;
+    }
+    expDiff = expA - expB;
+    sigA |= 0x00800000;
+    sigB |= 0x00800000;
+    if ( expDiff < 32 ) {
+        sigA <<= 8;
+        sigB <<= 8;
+        if ( expDiff < 0 ) {
+            if ( expDiff < -1 ) return a;
+            sigA >>= 1;
+        }
+        q = ( sigB <= sigA );
+        if ( q ) sigA -= sigB;
+        if ( 0 < expDiff ) {
+            q = ( (uint_fast64_t) sigA<<32 ) / sigB;
+            q >>= 32 - expDiff;
+            sigB >>= 2;
+            sigA = ( ( sigA>>1 )<<( expDiff - 1 ) ) - sigB * q;
+        } else {
+            sigA >>= 2;
+            sigB >>= 2;
+        }
+    } else {
+        if ( sigB <= sigA ) sigA -= sigB;
+        sigA64 = (uint_fast64_t) sigA<<40;
+        sigB64 = (uint_fast64_t) sigB<<40;
+        expDiff -= 64;
+        while ( 0 < expDiff ) {
+            q64 = softfloat_estimateDiv128To64( sigA64, 0, sigB64 );
+            q64 = ( 2 < q64 ) ? q64 - 2 : 0;
+            sigA64 = - ( ( sigB * q64 )<<38 );
+            expDiff -= 62;
+        }
+        expDiff += 64;
+        q64 = softfloat_estimateDiv128To64( sigA64, 0, sigB64 );
+        q64 = ( 2 < q64 ) ? q64 - 2 : 0;
+        q = q64>>( 64 - expDiff );
+        sigB <<= 6;
+        sigA = ( ( sigA64>>33 )<<( expDiff - 1 ) ) - sigB * q;
+    }
+    do {
+        alternateSigA = sigA;
+        ++q;
+        sigA -= sigB;
+    } while ( sigA < 0x80000000 );
+    sigMean = sigA + alternateSigA;
+    if ( ( 0x80000000 <= sigMean ) || ( ! sigMean && ( q & 1 ) ) ) {
+        sigA = alternateSigA;
+    }
+    signZ = ( 0x80000000 <= sigA );
+    if ( signZ ) sigA = - sigA;
+    return softfloat_normRoundPackToF32( signA ^ signZ, expB, sigA );
+ propagateNaN:
+    uiZ = softfloat_propagateNaNF32UI( uiA, uiB );
+    goto uiZ;
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    uiZ = defaultNaNF32UI;
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
diff --git a/softfloat/f32_roundToInt.c b/softfloat/f32_roundToInt.c
new file mode 100755
index 0000000..f8f9114
--- /dev/null
+++ b/softfloat/f32_roundToInt.c
@@ -0,0 +1,78 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+float32_t f32_roundToInt( float32_t a, int_fast8_t roundingMode, bool exact )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    int_fast16_t expA;
+    uint_fast32_t uiZ;
+    bool signA;
+    uint_fast32_t lastBitMask, roundBitsMask;
+    union ui32_f32 uZ;
+
+    uA.f = a;
+    uiA = uA.ui;
+    expA = expF32UI( uiA );
+    if ( 0x96 <= expA ) {
+        if ( ( expA == 0xFF ) && fracF32UI( uiA ) ) {
+            uiZ = softfloat_propagateNaNF32UI( uiA, 0 );
+            goto uiZ;
+        }
+        return a;
+    }
+    if ( expA <= 0x7E ) {
+        if ( ! (uint32_t) ( uiA<<1 ) ) return a;
+        if ( exact ) softfloat_exceptionFlags |= softfloat_flag_inexact;
+        signA = signF32UI( uiA );
+        switch ( roundingMode ) {
+         case softfloat_round_nearest_even:
+            if ( ( expA == 0x7E ) && fracF32UI( uiA ) ) {
+                uiZ = packToF32UI( signA, 0x7F, 0 );
+                goto uiZ;
+            }
+            break;
+         case softfloat_round_min:
+            uiZ = signA ? 0xBF800000 : 0;
+            goto uiZ;
+         case softfloat_round_max:
+            uiZ = signA ? 0x80000000 : 0x3F800000;
+            goto uiZ;
+         case softfloat_round_nearest_maxMag:
+            if ( expA == 0x7E ) {
+                uiZ = packToF32UI( signA, 0x7F, 0 );
+                goto uiZ;
+            }
+            break;
+        }
+        uiZ = packToF32UI( signA, 0, 0 );
+        goto uiZ;
+    }
+    lastBitMask = (uint_fast32_t) 1<<( 0x96 - expA );
+    roundBitsMask = lastBitMask - 1;
+    uiZ = uiA;
+    if ( roundingMode == softfloat_round_nearest_maxMag ) {
+        uiZ += lastBitMask>>1;
+    } else if ( roundingMode == softfloat_round_nearest_even ) {
+        uiZ += lastBitMask>>1;
+        if ( ! ( uiZ & roundBitsMask ) ) uiZ &= ~ lastBitMask;
+    } else if ( roundingMode != softfloat_round_minMag ) {
+        if ( signF32UI( uiZ ) ^ ( roundingMode == softfloat_round_max ) ) {
+            uiZ += roundBitsMask;
+        }
+    }
+    uiZ &= ~ roundBitsMask;
+    if ( exact && ( uiZ != uiA ) ) {
+        softfloat_exceptionFlags |= softfloat_flag_inexact;
+    }
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
diff --git a/softfloat/f32_sqrt.c b/softfloat/f32_sqrt.c
new file mode 100755
index 0000000..c9eb907
--- /dev/null
+++ b/softfloat/f32_sqrt.c
@@ -0,0 +1,74 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+float32_t f32_sqrt( float32_t a )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    bool signA;

+    int_fast16_t expA;

+    uint_fast32_t sigA, uiZ;

+    struct exp16_sig32 normExpSig;

+    int_fast16_t expZ;

+    uint_fast32_t sigZ;

+    uint_fast64_t term, rem;

+    union ui32_f32 uZ;

+

+    uA.f = a;

+    uiA = uA.ui;

+    signA = signF32UI( uiA );

+    expA = expF32UI( uiA );

+    sigA = fracF32UI( uiA );

+    if ( expA == 0xFF ) {

+        if ( sigA ) {

+            uiZ = softfloat_propagateNaNF32UI( uiA, 0 );

+            goto uiZ;

+        }

+        if ( ! signA ) return a;

+        goto invalid;

+    }

+    if ( signA ) {

+        if ( ! ( expA | sigA ) ) return a;

+        goto invalid;

+    }

+    if ( ! expA ) {

+        if ( ! sigA ) return a;

+        normExpSig = softfloat_normSubnormalF32Sig( sigA );

+        expA = normExpSig.exp;

+        sigA = normExpSig.sig;

+    }

+    expZ = ( ( expA - 0x7F )>>1 ) + 0x7E;

+    sigA = ( sigA | 0x00800000 )<<8;

+    sigZ = softfloat_estimateSqrt32( expA, sigA ) + 2;

+    if ( ( sigZ & 0x7F ) <= 5 ) {

+        if ( sigZ < 2 ) {

+            sigZ = 0x7FFFFFFF;

+            goto roundPack;

+        }

+        sigA >>= expA & 1;

+        term = (uint_fast64_t) sigZ * sigZ;

+        rem = ( (uint_fast64_t) sigA<<32 ) - term;

+        while ( UINT64_C( 0x8000000000000000 ) <= rem ) {

+            --sigZ;

+            rem += ( (uint_fast64_t) sigZ<<1 ) | 1;

+        }

+        sigZ |= ( rem != 0 );

+    }

+    sigZ = softfloat_shortShift32Right1Jam( sigZ );

+ roundPack:

+    return softfloat_roundPackToF32( 0, expZ, sigZ );

+ invalid:

+    softfloat_raiseFlags( softfloat_flag_invalid );

+    uiZ = defaultNaNF32UI;

+ uiZ:

+    uZ.ui = uiZ;

+    return uZ.f;

+

+}

+

diff --git a/softfloat/f32_sub.c b/softfloat/f32_sub.c
new file mode 100755
index 0000000..c64df8e
--- /dev/null
+++ b/softfloat/f32_sub.c
@@ -0,0 +1,29 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+float32_t f32_sub( float32_t a, float32_t b )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    bool signA;

+    union ui32_f32 uB;

+    uint_fast32_t uiB;

+    bool signB;

+    float32_t ( *magsRoutine )( uint_fast32_t, uint_fast32_t, bool );

+

+    uA.f = a;

+    uiA = uA.ui;

+    signA = signF32UI( uiA );

+    uB.f = b;

+    uiB = uB.ui;

+    signB = signF32UI( uiB );

+    magsRoutine =

+        ( signA == signB ) ? softfloat_subMagsF32 : softfloat_addMagsF32;

+    return magsRoutine( uiA, uiB ^ 0x80000000, signA );

+

+}

+

diff --git a/softfloat/f32_to_f64.c b/softfloat/f32_to_f64.c
new file mode 100755
index 0000000..9f0ae5c
--- /dev/null
+++ b/softfloat/f32_to_f64.c
@@ -0,0 +1,47 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+float64_t f32_to_f64( float32_t a )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    bool sign;

+    int_fast16_t exp;

+    uint_fast32_t sig;

+    uint_fast64_t uiZ;

+    struct exp16_sig32 normExpSig;

+    union ui64_f64 uZ;

+

+    uA.f = a;

+    uiA = uA.ui;

+    sign = signF32UI( uiA );

+    exp = expF32UI( uiA );

+    sig = fracF32UI( uiA );

+    if ( exp == 0xFF ) {

+        uiZ =

+            sig ? softfloat_commonNaNToF64UI(

+                      softfloat_f32UIToCommonNaN( uiA ) )

+                : packToF64UI( sign, 0x7FF, 0 );

+        goto uiZ;

+    }

+    if ( ! exp ) {

+        if ( ! sig ) {

+            uiZ = packToF64UI( sign, 0, 0 );

+            goto uiZ;

+        }

+        normExpSig = softfloat_normSubnormalF32Sig( sig );

+        exp = normExpSig.exp - 1;

+        sig = normExpSig.sig;

+    }

+    uiZ = packToF64UI( sign, exp + 0x380, (uint_fast64_t) sig<<29 );

+ uiZ:

+    uZ.ui = uiZ;

+    return uZ.f;

+

+}

+

diff --git a/softfloat/f32_to_i32.c b/softfloat/f32_to_i32.c
new file mode 100755
index 0000000..bbbaee0
--- /dev/null
+++ b/softfloat/f32_to_i32.c
@@ -0,0 +1,34 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+int_fast32_t f32_to_i32( float32_t a, int_fast8_t roundingMode, bool exact )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    bool sign;

+    int_fast16_t exp;

+    uint_fast32_t sig;

+    uint_fast64_t sig64;

+    int_fast16_t shiftCount;

+

+    uA.f = a;

+    uiA = uA.ui;

+    sign = signF32UI( uiA );

+    exp = expF32UI( uiA );

+    sig = fracF32UI( uiA );

+    if ( ( exp == 0xFF ) && sig ) sign = 0;

+    if ( exp ) sig |= 0x00800000;

+    sig64 = (uint_fast64_t) sig<<32;

+    shiftCount = 0xAF - exp;

+    if ( 0 < shiftCount ) {

+        sig64 = softfloat_shift64RightJam( sig64, shiftCount );

+    }

+    return softfloat_roundPackToI32( sign, sig64, roundingMode, exact );

+

+}

+

diff --git a/softfloat/f32_to_i32_r_minMag.c b/softfloat/f32_to_i32_r_minMag.c
new file mode 100755
index 0000000..63ff1e2
--- /dev/null
+++ b/softfloat/f32_to_i32_r_minMag.c
@@ -0,0 +1,45 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+int_fast32_t f32_to_i32_r_minMag( float32_t a, bool exact )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    int_fast16_t exp;

+    uint_fast32_t sig;

+    bool sign;

+    int_fast16_t shiftCount;

+    int_fast32_t absZ;

+

+    uA.f = a;

+    uiA = uA.ui;

+    exp = expF32UI( uiA );

+    sig = fracF32UI( uiA );

+    if ( exp < 0x7F ) {

+        if ( exact && ( exp | sig ) ) {

+            softfloat_exceptionFlags |= softfloat_flag_inexact;

+        }

+        return 0;

+    }

+    sign = signF32UI( uiA );

+    shiftCount = 0x9E - exp;

+    if ( shiftCount <= 0 ) {

+        if ( uiA != packToF32UI( 1, 0x9E, 0 ) ) {

+            softfloat_raiseFlags( softfloat_flag_invalid );

+            if ( ! sign || ( ( exp == 0xFF ) && sig ) ) return 0x7FFFFFFF;

+        }

+        return -0x7FFFFFFF - 1;

+    }

+    sig = ( sig | 0x00800000 )<<8;

+    absZ = sig>>shiftCount;

+    if ( exact && (uint32_t) ( sig<<( ( - shiftCount ) & 31 ) ) ) {

+        softfloat_exceptionFlags |= softfloat_flag_inexact;

+    }

+    return sign ? - absZ : absZ;

+

+}

+

diff --git a/softfloat/f32_to_i64.c b/softfloat/f32_to_i64.c
new file mode 100755
index 0000000..c0b8981
--- /dev/null
+++ b/softfloat/f32_to_i64.c
@@ -0,0 +1,44 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+int_fast64_t f32_to_i64( float32_t a, int_fast8_t roundingMode, bool exact )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    bool sign;

+    int_fast16_t exp;

+    uint_fast32_t sig;

+    int_fast16_t shiftCount;

+    uint_fast64_t sig64, extra;

+    struct uint64_extra sig64Extra;

+

+    uA.f = a;

+    uiA = uA.ui;

+    sign = signF32UI( uiA );

+    exp = expF32UI( uiA );

+    sig = fracF32UI( uiA );

+    shiftCount = 0xBE - exp;

+    if ( shiftCount < 0 ) {

+        softfloat_raiseFlags( softfloat_flag_invalid );

+        if ( ! sign || ( ( exp == 0xFF ) && sig ) ) {

+            return INT64_C( 0x7FFFFFFFFFFFFFFF );

+        }

+        return - INT64_C( 0x7FFFFFFFFFFFFFFF ) - 1;

+    }

+    if ( exp ) sig |= 0x00800000;

+    sig64 = (uint_fast64_t) sig<<40;

+    extra = 0;

+    if ( shiftCount ) {

+        sig64Extra = softfloat_shift64ExtraRightJam( sig64, 0, shiftCount );

+        sig64 = sig64Extra.v;

+        extra = sig64Extra.extra;

+    }

+    return softfloat_roundPackToI64( sign, sig64, extra, roundingMode, exact );

+

+}

+

diff --git a/softfloat/f32_to_i64_r_minMag.c b/softfloat/f32_to_i64_r_minMag.c
new file mode 100755
index 0000000..33bff93
--- /dev/null
+++ b/softfloat/f32_to_i64_r_minMag.c
@@ -0,0 +1,52 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+int_fast64_t f32_to_i64_r_minMag( float32_t a, bool exact )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    int_fast16_t exp;

+    uint_fast32_t sig;

+    bool sign;

+    int_fast16_t shiftCount;

+    uint_fast64_t sig64;

+    int_fast64_t absZ;

+

+    uA.f = a;

+    uiA = uA.ui;

+    exp = expF32UI( uiA );

+    sig = fracF32UI( uiA );

+    if ( exp < 0x7F ) {

+        if ( exact && ( exp | sig ) ) {

+            softfloat_exceptionFlags |= softfloat_flag_inexact;

+        }

+        return 0;

+    }

+    sign = signF32UI( uiA );

+    shiftCount = 0xBE - exp;

+    if ( shiftCount <= 0 ) {

+        if ( uiA != packToF32UI( 1, 0xBE, 0 ) ) {

+            softfloat_raiseFlags( softfloat_flag_invalid );

+            if ( ! sign || ( ( exp == 0xFF ) && sig ) ) {

+                return INT64_C( 0x7FFFFFFFFFFFFFFF );

+            }

+        }

+        return - INT64_C( 0x7FFFFFFFFFFFFFFF ) - 1;

+    }

+    sig |= 0x00800000;

+    sig64 = (uint_fast64_t) sig<<40;

+    absZ = sig64>>shiftCount;

+    shiftCount = 40 - shiftCount;

+    if (

+        exact && ( shiftCount < 0 ) && (uint32_t) ( sig<<( shiftCount & 31 ) )

+    ) {

+        softfloat_exceptionFlags |= softfloat_flag_inexact;

+    }

+    return sign ? - absZ : absZ;

+

+}

+

diff --git a/softfloat/f32_to_ui32.c b/softfloat/f32_to_ui32.c
new file mode 100755
index 0000000..3501db8
--- /dev/null
+++ b/softfloat/f32_to_ui32.c
@@ -0,0 +1,33 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+uint_fast32_t f32_to_ui32( float32_t a, int_fast8_t roundingMode, bool exact )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    bool sign;

+    int_fast16_t exp;

+    uint_fast32_t sig;

+    uint_fast64_t sig64;

+    int_fast16_t shiftCount;

+

+    uA.f = a;

+    uiA = uA.ui;

+    sign = signF32UI( uiA );

+    exp = expF32UI( uiA );

+    sig = fracF32UI( uiA );

+    if ( exp ) sig |= 0x00800000;

+    sig64 = (uint_fast64_t) sig<<32;

+    shiftCount = 0xAF - exp;

+    if ( 0 < shiftCount ) {

+        sig64 = softfloat_shift64RightJam( sig64, shiftCount );

+    }

+    return softfloat_roundPackToUI32( sign, sig64, roundingMode, exact );

+

+}

+

diff --git a/softfloat/f32_to_ui32_r_minMag.c b/softfloat/f32_to_ui32_r_minMag.c
new file mode 100755
index 0000000..edd858d
--- /dev/null
+++ b/softfloat/f32_to_ui32_r_minMag.c
@@ -0,0 +1,41 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+uint_fast32_t f32_to_ui32_r_minMag( float32_t a, bool exact )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    int_fast16_t exp;

+    uint_fast32_t sig;

+    int_fast16_t shiftCount;

+    uint_fast32_t z;

+

+    uA.f = a;

+    uiA = uA.ui;

+    exp = expF32UI( uiA );

+    sig = fracF32UI( uiA );

+    if ( exp < 0x7F ) {

+        if ( exact && ( exp | sig ) ) {

+            softfloat_exceptionFlags |= softfloat_flag_inexact;

+        }

+        return 0;

+    }

+    if ( signF32UI( uiA ) ) goto invalid;

+    shiftCount = 0x9E - exp;

+    if ( shiftCount < 0 ) goto invalid;

+    sig = ( sig | 0x00800000 )<<8;

+    z = sig>>shiftCount;

+    if ( exact && ( sig & ( ( (uint_fast32_t) 1<<shiftCount ) - 1 ) ) ) {

+        softfloat_exceptionFlags |= softfloat_flag_inexact;

+    }

+    return z;

+ invalid:

+    softfloat_raiseFlags( softfloat_flag_invalid );

+    return 0xFFFFFFFF;

+

+}

+

diff --git a/softfloat/f32_to_ui64.c b/softfloat/f32_to_ui64.c
new file mode 100755
index 0000000..6cdcf74
--- /dev/null
+++ b/softfloat/f32_to_ui64.c
@@ -0,0 +1,42 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+uint_fast64_t f32_to_ui64( float32_t a, int_fast8_t roundingMode, bool exact )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    bool sign;

+    int_fast16_t exp;

+    uint_fast32_t sig;

+    int_fast16_t shiftCount;

+    uint_fast64_t sig64, extra;

+    struct uint64_extra sig64Extra;

+

+    uA.f = a;

+    uiA = uA.ui;

+    sign = signF32UI( uiA );

+    exp = expF32UI( uiA );

+    sig = fracF32UI( uiA );

+    shiftCount = 0xBE - exp;

+    if ( shiftCount < 0 ) {

+        softfloat_raiseFlags( softfloat_flag_invalid );

+        return UINT64_C( 0xFFFFFFFFFFFFFFFF );

+    }

+    if ( exp ) sig |= 0x00800000;

+    sig64 = (uint_fast64_t) sig<<40;

+    extra = 0;

+    if ( shiftCount ) {

+        sig64Extra = softfloat_shift64ExtraRightJam( sig64, 0, shiftCount );

+        sig64 = sig64Extra.v;

+        extra = sig64Extra.extra;

+    }

+    return

+        softfloat_roundPackToUI64( sign, sig64, extra, roundingMode, exact );

+

+}

+

diff --git a/softfloat/f32_to_ui64_r_minMag.c b/softfloat/f32_to_ui64_r_minMag.c
new file mode 100755
index 0000000..738d6b1
--- /dev/null
+++ b/softfloat/f32_to_ui64_r_minMag.c
@@ -0,0 +1,45 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+uint_fast64_t f32_to_ui64_r_minMag( float32_t a, bool exact )

+{

+    union ui32_f32 uA;

+    uint_fast32_t uiA;

+    int_fast16_t exp;

+    uint_fast32_t sig;

+    int_fast16_t shiftCount;

+    uint_fast64_t sig64, z;

+

+    uA.f = a;

+    uiA = uA.ui;

+    exp = expF32UI( uiA );

+    sig = fracF32UI( uiA );

+    if ( exp < 0x7F ) {

+        if ( exact && ( exp | sig ) ) {

+            softfloat_exceptionFlags |= softfloat_flag_inexact;

+        }

+        return 0;

+    }

+    if ( signF32UI( uiA ) ) goto invalid;

+    shiftCount = 0xBE - exp;

+    if ( shiftCount < 0 ) goto invalid;

+    sig |= 0x00800000;

+    sig64 = (uint_fast64_t) sig<<40;

+    z = sig64>>shiftCount;

+    shiftCount = 40 - shiftCount;

+    if (

+        exact && ( shiftCount < 0 ) && (uint32_t) ( sig<<( shiftCount & 31 ) )

+    ) {

+        softfloat_exceptionFlags |= softfloat_flag_inexact;

+    }

+    return z;

+ invalid:

+    softfloat_raiseFlags( softfloat_flag_invalid );

+    return UINT64_C( 0xFFFFFFFFFFFFFFFF );

+

+}

+

diff --git a/softfloat/f64_add.c b/softfloat/f64_add.c
new file mode 100755
index 0000000..9ec4b5f
--- /dev/null
+++ b/softfloat/f64_add.c
@@ -0,0 +1,29 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+float64_t f64_add( float64_t a, float64_t b )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    bool signA;
+    union ui64_f64 uB;
+    uint_fast64_t uiB;
+    bool signB;
+    float64_t ( *magsRoutine )( uint_fast64_t, uint_fast64_t, bool );
+
+    uA.f = a;
+    uiA = uA.ui;
+    signA = signF64UI( uiA );
+    uB.f = b;
+    uiB = uB.ui;
+    signB = signF64UI( uiB );
+    magsRoutine =
+        ( signA == signB ) ? softfloat_addMagsF64 : softfloat_subMagsF64;
+    return magsRoutine( uiA, uiB, signA );
+
+}
+
diff --git a/softfloat/f64_div.c b/softfloat/f64_div.c
new file mode 100755
index 0000000..9bc72b3
--- /dev/null
+++ b/softfloat/f64_div.c
@@ -0,0 +1,104 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+float64_t f64_div( float64_t a, float64_t b )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    bool signA;
+    int_fast16_t expA;
+    uint_fast64_t sigA;
+    union ui64_f64 uB;
+    uint_fast64_t uiB;
+    bool signB;
+    int_fast16_t expB;
+    uint_fast64_t sigB;
+    bool signZ;
+    struct exp16_sig64 normExpSig;
+    int_fast16_t expZ;
+    uint_fast64_t sigZ;
+    struct uint128 term, rem;
+    uint_fast64_t uiZ;
+    union ui64_f64 uZ;
+
+    uA.f = a;
+    uiA = uA.ui;
+    signA = signF64UI( uiA );
+    expA = expF64UI( uiA );
+    sigA = fracF64UI( uiA );
+    uB.f = b;
+    uiB = uB.ui;
+    signB = signF64UI( uiB );
+    expB = expF64UI( uiB );
+    sigB = fracF64UI( uiB );
+    signZ = signA ^ signB;
+    if ( expA == 0x7FF ) {
+        if ( sigA ) goto propagateNaN;
+        if ( expB == 0x7FF ) {
+            if ( sigB ) goto propagateNaN;
+            goto invalid;
+        }
+        goto infinity;
+    }
+    if ( expB == 0x7FF ) {
+        if ( sigB ) goto propagateNaN;
+        goto zero;
+    }
+    if ( ! expB ) {
+        if ( ! sigB ) {
+            if ( ! ( expA | sigA ) ) goto invalid;
+            softfloat_raiseFlags( softfloat_flag_infinity );
+            goto infinity;
+        }
+        normExpSig = softfloat_normSubnormalF64Sig( sigB );
+        expB = normExpSig.exp;
+        sigB = normExpSig.sig;
+    }
+    if ( ! expA ) {
+        if ( ! sigA ) goto zero;
+        normExpSig = softfloat_normSubnormalF64Sig( sigA );
+        expA = normExpSig.exp;
+        sigA = normExpSig.sig;
+    }
+    expZ = expA - expB + 0x3FD;
+    sigA = ( sigA | UINT64_C( 0x0010000000000000 ) )<<10;
+    sigB = ( sigB | UINT64_C( 0x0010000000000000 ) )<<11;
+    if ( sigB <= ( sigA + sigA ) ) {
+        ++expZ;
+        sigA >>= 1;
+    }
+    sigZ = softfloat_estimateDiv128To64( sigA, 0, sigB );
+    if ( ( sigZ & 0x1FF ) <= 2 ) {
+        term = softfloat_mul64To128( sigB, sigZ );
+        rem = softfloat_sub128( sigA, 0, term.v64, term.v0 );
+        while ( UINT64_C( 0x8000000000000000 ) <= rem.v64 ) {
+            --sigZ;
+            rem = softfloat_add128( rem.v64, rem.v0, 0, sigB );
+        }
+        sigZ |= ( rem.v0 != 0 );
+    }
+    return softfloat_roundPackToF64( signZ, expZ, sigZ );
+ propagateNaN:
+    uiZ = softfloat_propagateNaNF64UI( uiA, uiB );
+    goto uiZ;
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    uiZ = defaultNaNF64UI;
+    goto uiZ;
+ infinity:
+    uiZ = packToF64UI( signZ, 0x7FF, 0 );
+    goto uiZ;
+ zero:
+    uiZ = packToF64UI( signZ, 0, 0 );
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
diff --git a/softfloat/f64_eq.c b/softfloat/f64_eq.c
new file mode 100755
index 0000000..925aabc
--- /dev/null
+++ b/softfloat/f64_eq.c
@@ -0,0 +1,35 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+bool f64_eq( float64_t a, float64_t b )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    union ui64_f64 uB;
+    uint_fast64_t uiB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF64UI( uiA ) == 0x7FF ) && fracF64UI( uiA ) )
+        || ( ( expF64UI( uiB ) == 0x7FF ) && fracF64UI( uiB ) )
+    ) {
+        if (
+            softfloat_isSigNaNF64UI( uiA ) || softfloat_isSigNaNF64UI( uiB )
+        ) {
+            softfloat_raiseFlags( softfloat_flag_invalid );
+        }
+        return false;
+    }
+    return
+        ( uiA == uiB ) || ! ( ( uiA | uiB ) & UINT64_C( 0x7FFFFFFFFFFFFFFF ) );
+
+}
+
diff --git a/softfloat/f64_eq_signaling.c b/softfloat/f64_eq_signaling.c
new file mode 100755
index 0000000..7a54dc1
--- /dev/null
+++ b/softfloat/f64_eq_signaling.c
@@ -0,0 +1,30 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+bool f64_eq_signaling( float64_t a, float64_t b )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    union ui64_f64 uB;
+    uint_fast64_t uiB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF64UI( uiA ) == 0x7FF ) && fracF64UI( uiA ) )
+        || ( ( expF64UI( uiB ) == 0x7FF ) && fracF64UI( uiB ) )
+    ) {
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        return false;
+    }
+    return
+        ( uiA == uiB ) || ! ( ( uiA | uiB ) & UINT64_C( 0x7FFFFFFFFFFFFFFF ) );
+
+}
+
diff --git a/softfloat/f64_isSignalingNaN.c b/softfloat/f64_isSignalingNaN.c
new file mode 100755
index 0000000..d720ac1
--- /dev/null
+++ b/softfloat/f64_isSignalingNaN.c
@@ -0,0 +1,16 @@
+
+#include <stdbool.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+bool f64_isSignalingNaN( float64_t a )
+{
+    union ui64_f64 uA;
+
+    uA.f = a;
+    return softfloat_isSigNaNF64UI( uA.ui );
+
+}
+
diff --git a/softfloat/f64_le.c b/softfloat/f64_le.c
new file mode 100755
index 0000000..e6c5caf
--- /dev/null
+++ b/softfloat/f64_le.c
@@ -0,0 +1,35 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+bool f64_le( float64_t a, float64_t b )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    union ui64_f64 uB;
+    uint_fast64_t uiB;
+    bool signA, signB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF64UI( uiA ) == 0x7FF ) && fracF64UI( uiA ) )
+        || ( ( expF64UI( uiB ) == 0x7FF ) && fracF64UI( uiB ) )
+    ) {
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        return false;
+    }
+    signA = signF64UI( uiA );
+    signB = signF64UI( uiB );
+    return
+        ( signA != signB )
+            ? signA || ! ( ( uiA | uiB ) & UINT64_C( 0x7FFFFFFFFFFFFFFF ) )
+            : ( uiA == uiB ) || ( signA ^ ( uiA < uiB ) );
+
+}
+
diff --git a/softfloat/f64_le_quiet.c b/softfloat/f64_le_quiet.c
new file mode 100755
index 0000000..e9b7ede
--- /dev/null
+++ b/softfloat/f64_le_quiet.c
@@ -0,0 +1,40 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+bool f64_le_quiet( float64_t a, float64_t b )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    union ui64_f64 uB;
+    uint_fast64_t uiB;
+    bool signA, signB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF64UI( uiA ) == 0x7FF ) && fracF64UI( uiA ) )
+        || ( ( expF64UI( uiB ) == 0x7FF ) && fracF64UI( uiB ) )
+    ) {
+        if (
+            softfloat_isSigNaNF64UI( uiA ) || softfloat_isSigNaNF64UI( uiB )
+        ) {
+            softfloat_raiseFlags( softfloat_flag_invalid );
+        }
+        return false;
+    }
+    signA = signF64UI( uiA );
+    signB = signF64UI( uiB );
+    return
+        ( signA != signB )
+            ? signA || ! ( ( uiA | uiB ) & UINT64_C( 0x7FFFFFFFFFFFFFFF ) )
+            : ( uiA == uiB ) || ( signA ^ ( uiA < uiB ) );
+
+}
+
diff --git a/softfloat/f64_lt.c b/softfloat/f64_lt.c
new file mode 100755
index 0000000..1b2f696
--- /dev/null
+++ b/softfloat/f64_lt.c
@@ -0,0 +1,35 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+bool f64_lt( float64_t a, float64_t b )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    union ui64_f64 uB;
+    uint_fast64_t uiB;
+    bool signA, signB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF64UI( uiA ) == 0x7FF ) && fracF64UI( uiA ) )
+        || ( ( expF64UI( uiB ) == 0x7FF ) && fracF64UI( uiB ) )
+    ) {
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        return false;
+    }
+    signA = signF64UI( uiA );
+    signB = signF64UI( uiB );
+    return
+        ( signA != signB )
+            ? signA && ( ( uiA | uiB ) & UINT64_C( 0x7FFFFFFFFFFFFFFF ) )
+            : ( uiA != uiB ) && ( signA ^ ( uiA < uiB ) );
+
+}
+
diff --git a/softfloat/f64_lt_quiet.c b/softfloat/f64_lt_quiet.c
new file mode 100755
index 0000000..f27e6da
--- /dev/null
+++ b/softfloat/f64_lt_quiet.c
@@ -0,0 +1,40 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+bool f64_lt_quiet( float64_t a, float64_t b )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    union ui64_f64 uB;
+    uint_fast64_t uiB;
+    bool signA, signB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF64UI( uiA ) == 0x7FF ) && fracF64UI( uiA ) )
+        || ( ( expF64UI( uiB ) == 0x7FF ) && fracF64UI( uiB ) )
+    ) {
+        if (
+            softfloat_isSigNaNF64UI( uiA ) || softfloat_isSigNaNF64UI( uiB )
+        ) {
+            softfloat_raiseFlags( softfloat_flag_invalid );
+        }
+        return false;
+    }
+    signA = signF64UI( uiA );
+    signB = signF64UI( uiB );
+    return
+        ( signA != signB )
+            ? signA && ( ( uiA | uiB ) & UINT64_C( 0x7FFFFFFFFFFFFFFF ) )
+            : ( uiA != uiB ) && ( signA ^ ( uiA < uiB ) );
+
+}
+
diff --git a/softfloat/f64_mul.c b/softfloat/f64_mul.c
new file mode 100755
index 0000000..4b5dc4e
--- /dev/null
+++ b/softfloat/f64_mul.c
@@ -0,0 +1,91 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+float64_t f64_mul( float64_t a, float64_t b )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    bool signA;

+    int_fast16_t expA;

+    uint_fast64_t sigA;

+    union ui64_f64 uB;

+    uint_fast64_t uiB;

+    bool signB;

+    int_fast16_t expB;

+    uint_fast64_t sigB;

+    bool signZ;

+    uint_fast64_t magBits;

+    struct exp16_sig64 normExpSig;

+    int_fast16_t expZ;

+    struct uint128 sigZ128;

+    uint_fast64_t sigZ, uiZ;

+    union ui64_f64 uZ;

+

+    uA.f = a;

+    uiA = uA.ui;

+    signA = signF64UI( uiA );

+    expA = expF64UI( uiA );

+    sigA = fracF64UI( uiA );

+    uB.f = b;

+    uiB = uB.ui;

+    signB = signF64UI( uiB );

+    expB = expF64UI( uiB );

+    sigB = fracF64UI( uiB );

+    signZ = signA ^ signB;

+    if ( expA == 0x7FF ) {

+        if ( sigA || ( ( expB == 0x7FF ) && sigB ) ) goto propagateNaN;

+        magBits = expB | sigB;

+        goto infArg;

+    }

+    if ( expB == 0x7FF ) {

+        if ( sigB ) goto propagateNaN;

+        magBits = expA | sigA;

+        goto infArg;

+    }

+    if ( ! expA ) {

+        if ( ! sigA ) goto zero;

+        normExpSig = softfloat_normSubnormalF64Sig( sigA );

+        expA = normExpSig.exp;

+        sigA = normExpSig.sig;

+    }

+    if ( ! expB ) {

+        if ( ! sigB ) goto zero;

+        normExpSig = softfloat_normSubnormalF64Sig( sigB );

+        expB = normExpSig.exp;

+        sigB = normExpSig.sig;

+    }

+    expZ = expA + expB - 0x3FF;

+    sigA = ( sigA | UINT64_C( 0x0010000000000000 ) )<<10;

+    sigB = ( sigB | UINT64_C( 0x0010000000000000 ) )<<11;

+    sigZ128 = softfloat_mul64To128( sigA, sigB );

+    sigZ = sigZ128.v64 | ( sigZ128.v0 != 0 );

+    if ( sigZ < UINT64_C( 0x4000000000000000 ) ) {

+        --expZ;

+        sigZ <<= 1;

+    }

+    return softfloat_roundPackToF64( signZ, expZ, sigZ );

+ propagateNaN:

+    uiZ = softfloat_propagateNaNF64UI( uiA, uiB );

+    goto uiZ;

+ infArg:

+    if ( ! magBits ) {

+        softfloat_raiseFlags( softfloat_flag_invalid );

+        uiZ = defaultNaNF64UI;

+    } else {

+        uiZ = packToF64UI( signZ, 0x7FF, 0 );

+    }

+    goto uiZ;

+ zero:

+    uiZ = packToF64UI( signZ, 0, 0 );

+ uiZ:

+    uZ.ui = uiZ;

+    return uZ.f;

+

+}

+

diff --git a/softfloat/f64_mulAdd.c b/softfloat/f64_mulAdd.c
new file mode 100755
index 0000000..fa1669a
--- /dev/null
+++ b/softfloat/f64_mulAdd.c
@@ -0,0 +1,25 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+float64_t f64_mulAdd( float64_t a, float64_t b, float64_t c )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    union ui64_f64 uB;

+    uint_fast64_t uiB;

+    union ui64_f64 uC;

+    uint_fast64_t uiC;

+

+    uA.f = a;

+    uiA = uA.ui;

+    uB.f = b;

+    uiB = uB.ui;

+    uC.f = c;

+    uiC = uC.ui;

+    return softfloat_mulAddF64( 0, uiA, uiB, uiC );

+

+}

+

diff --git a/softfloat/f64_rem.c b/softfloat/f64_rem.c
new file mode 100755
index 0000000..08fcd78
--- /dev/null
+++ b/softfloat/f64_rem.c
@@ -0,0 +1,113 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+float64_t f64_rem( float64_t a, float64_t b )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    bool signA;
+    int_fast16_t expA;
+    uint_fast64_t sigA;
+    union ui64_f64 uB;
+    uint_fast64_t uiB;
+    bool signB;
+    int_fast16_t expB;
+    uint_fast64_t sigB;
+    struct exp16_sig64 normExpSig;
+    int_fast16_t expDiff;
+    uint_fast64_t q, alternateSigA;
+    uint64_t sigMean;
+    bool signZ;
+    uint_fast64_t uiZ;
+    union ui64_f64 uZ;
+
+    uA.f = a;
+    uiA = uA.ui;
+    signA = signF64UI( uiA );
+    expA = expF64UI( uiA );
+    sigA = fracF64UI( uiA );
+    uB.f = b;
+    uiB = uB.ui;
+    signB = signF64UI( uiB );
+    expB = expF64UI( uiB );
+    sigB = fracF64UI( uiB );
+    if ( expA == 0x7FF ) {
+        if ( sigA || ( ( expB == 0x7FF ) && sigB ) ) goto propagateNaN;
+        goto invalid;
+    }
+    if ( expB == 0x7FF ) {
+        if ( sigB ) goto propagateNaN;
+        return a;
+    }
+    if ( ! expB ) {
+        if ( ! sigB ) goto invalid;
+        normExpSig = softfloat_normSubnormalF64Sig( sigB );
+        expB = normExpSig.exp;
+        sigB = normExpSig.sig;
+    }
+    if ( ! expA ) {
+        if ( ! sigA ) return a;
+        normExpSig = softfloat_normSubnormalF64Sig( sigA );
+        expA = normExpSig.exp;
+        sigA = normExpSig.sig;
+    }
+    expDiff = expA - expB;
+    sigA = ( sigA | UINT64_C( 0x0010000000000000 ) )<<11;
+    sigB = ( sigB | UINT64_C( 0x0010000000000000 ) )<<11;
+    if ( expDiff < 0 ) {
+        if ( expDiff < -1 ) return a;
+        sigA >>= 1;
+    }
+    q = ( sigB <= sigA );
+    if ( q ) sigA -= sigB;
+    expDiff -= 64;
+    while ( 0 < expDiff ) {
+        q = softfloat_estimateDiv128To64( sigA, 0, sigB );
+        q = ( 2 < q ) ? q - 2 : 0;
+        sigA = - ( ( sigB>>2 ) * q );
+        expDiff -= 62;
+    }
+    expDiff += 64;
+    if ( 0 < expDiff ) {
+        q = softfloat_estimateDiv128To64( sigA, 0, sigB );
+        q = ( 2 < q ) ? q - 2 : 0;
+        q >>= 64 - expDiff;
+        sigB >>= 2;
+        sigA = ( ( sigA>>1 )<<( expDiff - 1 ) ) - sigB * q;
+    } else {
+        sigA >>= 2;
+        sigB >>= 2;
+    }
+    do {
+        alternateSigA = sigA;
+        ++q;
+        sigA -= sigB;
+    } while ( sigA < UINT64_C( 0x8000000000000000 ) );
+    sigMean = sigA + alternateSigA;
+    if (
+        ( UINT64_C( 0x8000000000000000 ) <= sigMean )
+            || ( ! sigMean && ( q & 1 ) )
+    ) {
+        sigA = alternateSigA;
+    }
+    signZ = ( UINT64_C( 0x8000000000000000 ) <= sigA );
+    if ( signZ ) sigA = - sigA;
+    return softfloat_normRoundPackToF64( signA ^ signZ, expB, sigA );
+ propagateNaN:
+    uiZ = softfloat_propagateNaNF64UI( uiA, uiB );
+    goto uiZ;
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    uiZ = defaultNaNF64UI;
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
diff --git a/softfloat/f64_roundToInt.c b/softfloat/f64_roundToInt.c
new file mode 100755
index 0000000..ef16dfa
--- /dev/null
+++ b/softfloat/f64_roundToInt.c
@@ -0,0 +1,80 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+float64_t f64_roundToInt( float64_t a, int_fast8_t roundingMode, bool exact )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    int_fast16_t expA;
+    uint_fast64_t uiZ;
+    bool signA;
+    uint_fast64_t lastBitMask, roundBitsMask;
+    union ui64_f64 uZ;
+
+    uA.f = a;
+    uiA = uA.ui;
+    expA = expF64UI( uiA );
+    if ( 0x433 <= expA ) {
+        if ( ( expA == 0x7FF ) && fracF64UI( uiA ) ) {
+            uiZ = softfloat_propagateNaNF64UI( uiA, 0 );
+            goto uiZ;
+        }
+        return a;
+    }
+    if ( expA <= 0x3FE ) {
+        if ( ! ( uiA & UINT64_C( 0x7FFFFFFFFFFFFFFF ) ) ) return a;
+        if ( exact ) softfloat_exceptionFlags |= softfloat_flag_inexact;
+        signA = signF64UI( uiA );
+        switch ( roundingMode ) {
+         case softfloat_round_nearest_even:
+            if ( ( expA == 0x3FE ) && fracF64UI( uiA ) ) {
+                uiZ = packToF64UI( signA, 0x3FF, 0 );
+                goto uiZ;
+            }
+            break;
+         case softfloat_round_min:
+            uiZ = signA ? UINT64_C( 0xBFF0000000000000 ) : 0;
+            goto uiZ;
+         case softfloat_round_max:
+            uiZ =
+                signA ? UINT64_C( 0x8000000000000000 )
+                    : UINT64_C( 0x3FF0000000000000 );
+            goto uiZ;
+         case softfloat_round_nearest_maxMag:
+            if ( expA == 0x3FE ) {
+                uiZ = packToF64UI( signA, 0x3FF, 0 );
+                goto uiZ;
+            }
+            break;
+        }
+        uiZ = packToF64UI( signA, 0, 0 );
+        goto uiZ;
+    }
+    lastBitMask = (uint_fast64_t) 1<<( 0x433 - expA );
+    roundBitsMask = lastBitMask - 1;
+    uiZ = uiA;
+    if ( roundingMode == softfloat_round_nearest_maxMag ) {
+        uiZ += lastBitMask>>1;
+    } else if ( roundingMode == softfloat_round_nearest_even ) {
+        uiZ += lastBitMask>>1;
+        if ( ! ( uiZ & roundBitsMask ) ) uiZ &= ~ lastBitMask;
+    } else if ( roundingMode != softfloat_round_minMag ) {
+        if ( signF64UI( uiZ ) ^ ( roundingMode == softfloat_round_max ) ) {
+            uiZ += roundBitsMask;
+        }
+    }
+    uiZ &= ~ roundBitsMask;
+    if ( exact && ( uiZ != uiA ) ) {
+        softfloat_exceptionFlags |= softfloat_flag_inexact;
+    }
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
diff --git a/softfloat/f64_sqrt.c b/softfloat/f64_sqrt.c
new file mode 100755
index 0000000..cd91010
--- /dev/null
+++ b/softfloat/f64_sqrt.c
@@ -0,0 +1,74 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+float64_t f64_sqrt( float64_t a )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    bool signA;

+    int_fast16_t expA;

+    uint_fast64_t sigA, uiZ;

+    struct exp16_sig64 normExpSig;

+    int_fast16_t expZ;

+    uint_fast32_t sigZ32;

+    uint_fast64_t sigZ;

+    struct uint128 term, rem;

+    union ui64_f64 uZ;

+

+    uA.f = a;

+    uiA = uA.ui;

+    signA = signF64UI( uiA );

+    expA = expF64UI( uiA );

+    sigA = fracF64UI( uiA );

+    if ( expA == 0x7FF ) {

+        if ( sigA ) {

+            uiZ = softfloat_propagateNaNF64UI( uiA, 0 );

+            goto uiZ;

+        }

+        if ( ! signA ) return a;

+        goto invalid;

+    }

+    if ( signA ) {

+        if ( ! ( expA | sigA ) ) return a;

+        goto invalid;

+    }

+    if ( ! expA ) {

+        if ( ! sigA ) return a;

+        normExpSig = softfloat_normSubnormalF64Sig( sigA );

+        expA = normExpSig.exp;

+        sigA = normExpSig.sig;

+    }

+    expZ = ( ( expA - 0x3FF )>>1 ) + 0x3FE;

+    sigA |= UINT64_C( 0x0010000000000000 );

+    sigZ32 = softfloat_estimateSqrt32( expA, sigA>>21 );

+    sigA <<= 9 - ( expA & 1 );

+    sigZ =

+        softfloat_estimateDiv128To64( sigA, 0, (uint_fast64_t) sigZ32<<32 )

+            + ( (uint_fast64_t) sigZ32<<30 );

+    if ( ( sigZ & 0x1FF ) <= 5 ) {

+        term = softfloat_mul64To128( sigZ, sigZ );

+        rem = softfloat_sub128( sigA, 0, term.v64, term.v0 );

+        while ( UINT64_C( 0x8000000000000000 ) <= rem.v64 ) {

+            --sigZ;

+            rem =

+                softfloat_add128(

+                    rem.v64, rem.v0, sigZ>>63, (uint64_t) ( sigZ<<1 ) );

+        }

+        sigZ |= ( ( rem.v64 | rem.v0 ) != 0 );

+    }

+    return softfloat_roundPackToF64( 0, expZ, sigZ );

+ invalid:

+    softfloat_raiseFlags( softfloat_flag_invalid );

+    uiZ = defaultNaNF64UI;

+ uiZ:

+    uZ.ui = uiZ;

+    return uZ.f;

+

+}

+

diff --git a/softfloat/f64_sub.c b/softfloat/f64_sub.c
new file mode 100755
index 0000000..38bd574
--- /dev/null
+++ b/softfloat/f64_sub.c
@@ -0,0 +1,29 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+float64_t f64_sub( float64_t a, float64_t b )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    bool signA;
+    union ui64_f64 uB;
+    uint_fast64_t uiB;
+    bool signB;
+    float64_t ( *magsRoutine )( uint_fast64_t, uint_fast64_t, bool );
+
+    uA.f = a;
+    uiA = uA.ui;
+    signA = signF64UI( uiA );
+    uB.f = b;
+    uiB = uB.ui;
+    signB = signF64UI( uiB );
+    magsRoutine =
+        ( signA == signB ) ? softfloat_subMagsF64 : softfloat_addMagsF64;
+    return magsRoutine( uiA, uiB, signA );
+
+}
+
diff --git a/softfloat/f64_to_f32.c b/softfloat/f64_to_f32.c
new file mode 100755
index 0000000..395d6c6
--- /dev/null
+++ b/softfloat/f64_to_f32.c
@@ -0,0 +1,43 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+float32_t f64_to_f32( float64_t a )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    bool sign;

+    int_fast16_t exp;

+    uint_fast64_t sig;

+    uint_fast32_t uiZ, sig32;

+    union ui32_f32 uZ;

+

+    uA.f = a;

+    uiA = uA.ui;

+    sign = signF64UI( uiA );

+    exp = expF64UI( uiA );

+    sig = fracF64UI( uiA );

+    if ( exp == 0x7FF ) {

+        uiZ =

+            sig ? softfloat_commonNaNToF32UI(

+                      softfloat_f64UIToCommonNaN( uiA ) )

+                : packToF32UI( sign, 0xFF, 0 );

+        goto uiZ;

+    }

+    sig32 = softfloat_shortShift64RightJam( sig, 22 );

+    if ( ! ( exp | sig32 ) ) {

+        uiZ = packToF32UI( sign, 0, 0 );

+        goto uiZ;

+    }

+    return softfloat_roundPackToF32( sign, exp - 0x381, sig32 | 0x40000000 );

+ uiZ:

+    uZ.ui = uiZ;

+    return uZ.f;

+

+}

+

diff --git a/softfloat/f64_to_i32.c b/softfloat/f64_to_i32.c
new file mode 100755
index 0000000..0778a86
--- /dev/null
+++ b/softfloat/f64_to_i32.c
@@ -0,0 +1,30 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+int_fast32_t f64_to_i32( float64_t a, int_fast8_t roundingMode, bool exact )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    bool sign;

+    int_fast16_t exp;

+    uint_fast64_t sig;

+    int_fast16_t shiftCount;

+

+    uA.f = a;

+    uiA = uA.ui;

+    sign = signF64UI( uiA );

+    exp = expF64UI( uiA );

+    sig = fracF64UI( uiA );

+    if ( ( exp == 0x7FF ) && sig ) sign = 0;

+    if ( exp ) sig |= UINT64_C( 0x0010000000000000 );

+    shiftCount = 0x42C - exp;

+    if ( 0 < shiftCount ) sig = softfloat_shift64RightJam( sig, shiftCount );

+    return softfloat_roundPackToI32( sign, sig, roundingMode, exact );

+

+}

+

diff --git a/softfloat/f64_to_i32_r_minMag.c b/softfloat/f64_to_i32_r_minMag.c
new file mode 100755
index 0000000..39246c2
--- /dev/null
+++ b/softfloat/f64_to_i32_r_minMag.c
@@ -0,0 +1,50 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+int_fast32_t f64_to_i32_r_minMag( float64_t a, bool exact )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    int_fast16_t exp;

+    uint_fast64_t sig;

+    bool sign;

+    int_fast16_t shiftCount;

+    uint_fast32_t absZ;

+    union { uint32_t ui; int32_t i; } uZ;

+    int_fast32_t z;

+

+    uA.f = a;

+    uiA = uA.ui;

+    exp = expF64UI( uiA );

+    sig = fracF64UI( uiA );

+    if ( exp < 0x3FF ) {

+        if ( exact && ( exp | sig ) ) {

+            softfloat_exceptionFlags |= softfloat_flag_inexact;

+        }

+        return 0;

+    }

+    sign = signF64UI( uiA );

+    if ( 0x41E < exp ) {

+        if ( ( exp == 0x7FF ) && sig ) sign = 0;

+        goto invalid;

+    }

+    sig |= UINT64_C( 0x0010000000000000 );

+    shiftCount = 0x433 - exp;

+    absZ = sig>>shiftCount;

+    uZ.ui = sign ? - absZ : absZ;

+    z = uZ.i;

+    if ( ( z < 0 ) != sign ) goto invalid;

+    if ( exact && ( (uint_fast64_t) absZ<<shiftCount != sig ) ) {

+        softfloat_exceptionFlags |= softfloat_flag_inexact;

+    }

+    return z;

+ invalid:

+    softfloat_raiseFlags( softfloat_flag_invalid );

+    return sign ? -0x7FFFFFFF - 1 : 0x7FFFFFFF;

+

+}

+

diff --git a/softfloat/f64_to_i64.c b/softfloat/f64_to_i64.c
new file mode 100755
index 0000000..89663ee
--- /dev/null
+++ b/softfloat/f64_to_i64.c
@@ -0,0 +1,46 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+int_fast64_t f64_to_i64( float64_t a, int_fast8_t roundingMode, bool exact )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    bool sign;

+    int_fast16_t exp;

+    uint_fast64_t sig;

+    int_fast16_t shiftCount;

+    struct uint64_extra sigExtra;

+

+    uA.f = a;

+    uiA = uA.ui;

+    sign = signF64UI( uiA );

+    exp = expF64UI( uiA );

+    sig = fracF64UI( uiA );

+    if ( exp ) sig |= UINT64_C( 0x0010000000000000 );

+    shiftCount = 0x433 - exp;

+    if ( shiftCount <= 0 ) {

+        if ( 0x43E < exp ) {

+            softfloat_raiseFlags( softfloat_flag_invalid );

+            return

+                ! sign

+                    || ( ( exp == 0x7FF )

+                             && ( sig != UINT64_C( 0x0010000000000000 ) ) )

+                    ? INT64_C( 0x7FFFFFFFFFFFFFFF )

+                    : - INT64_C( 0x7FFFFFFFFFFFFFFF ) - 1;

+        }

+        sigExtra.v = sig<<( - shiftCount );

+        sigExtra.extra = 0;

+    } else {

+        sigExtra = softfloat_shift64ExtraRightJam( sig, 0, shiftCount );

+    }

+    return

+        softfloat_roundPackToI64(

+            sign, sigExtra.v, sigExtra.extra, roundingMode, exact );

+

+}

+

diff --git a/softfloat/f64_to_i64_r_minMag.c b/softfloat/f64_to_i64_r_minMag.c
new file mode 100755
index 0000000..525705b
--- /dev/null
+++ b/softfloat/f64_to_i64_r_minMag.c
@@ -0,0 +1,52 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+int_fast64_t f64_to_i64_r_minMag( float64_t a, bool exact )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    bool sign;

+    int_fast16_t exp;

+    uint_fast64_t sig;

+    int_fast16_t shiftCount;

+    int_fast64_t absZ;

+

+    uA.f = a;

+    uiA = uA.ui;

+    sign = signF64UI( uiA );

+    exp = expF64UI( uiA );

+    sig = fracF64UI( uiA );

+    shiftCount = exp - 0x433;

+    if ( 0 <= shiftCount ) {

+        if ( 0x43E <= exp ) {

+            if ( uiA != packToF64UI( 1, 0x43E, 0 ) ) {

+                softfloat_raiseFlags( softfloat_flag_invalid );

+                if ( ! sign || ( ( exp == 0x7FF ) && sig ) ) {

+                    return INT64_C( 0x7FFFFFFFFFFFFFFF );

+                }

+            }

+            return - INT64_C( 0x7FFFFFFFFFFFFFFF ) - 1;

+        }

+        sig |= UINT64_C( 0x0010000000000000 );

+        absZ = sig<<shiftCount;

+    } else {

+        if ( exp < 0x3FF ) {

+            if ( exact && ( exp | sig ) ) {

+                softfloat_exceptionFlags |= softfloat_flag_inexact;

+            }

+            return 0;

+        }

+        sig |= UINT64_C( 0x0010000000000000 );

+        absZ = sig>>( - shiftCount );

+        if ( exact && (uint64_t) ( sig<<( shiftCount & 63 ) ) ) {

+            softfloat_exceptionFlags |= softfloat_flag_inexact;

+        }

+    }

+    return sign ? - absZ : absZ;

+

+}

+

diff --git a/softfloat/f64_to_ui32.c b/softfloat/f64_to_ui32.c
new file mode 100755
index 0000000..b186605
--- /dev/null
+++ b/softfloat/f64_to_ui32.c
@@ -0,0 +1,29 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+uint_fast32_t f64_to_ui32( float64_t a, int_fast8_t roundingMode, bool exact )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    bool sign;

+    int_fast16_t exp;

+    uint_fast64_t sig;

+    int_fast16_t shiftCount;

+

+    uA.f = a;

+    uiA = uA.ui;

+    sign = signF64UI( uiA );

+    exp = expF64UI( uiA );

+    sig = fracF64UI( uiA );

+    if ( exp ) sig |= UINT64_C( 0x0010000000000000 );

+    shiftCount = 0x42C - exp;

+    if ( 0 < shiftCount ) sig = softfloat_shift64RightJam( sig, shiftCount );

+    return softfloat_roundPackToUI32( sign, sig, roundingMode, exact );

+

+}

+

diff --git a/softfloat/f64_to_ui32_r_minMag.c b/softfloat/f64_to_ui32_r_minMag.c
new file mode 100755
index 0000000..9f1dd4d
--- /dev/null
+++ b/softfloat/f64_to_ui32_r_minMag.c
@@ -0,0 +1,40 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+uint_fast32_t f64_to_ui32_r_minMag( float64_t a, bool exact )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    int_fast16_t exp;

+    uint_fast64_t sig;

+    int_fast16_t shiftCount;

+    uint_fast32_t z;

+

+    uA.f = a;

+    uiA = uA.ui;

+    exp = expF64UI( uiA );

+    sig = fracF64UI( uiA );

+    if ( exp < 0x3FF ) {

+        if ( exact && ( exp | sig ) ) {

+            softfloat_exceptionFlags |= softfloat_flag_inexact;

+        }

+        return 0;

+    }

+    if ( signF64UI( uiA ) || ( 0x41E < exp ) ) {

+        softfloat_raiseFlags( softfloat_flag_invalid );

+        return 0xFFFFFFFF;

+    }

+    sig |= UINT64_C( 0x0010000000000000 );

+    shiftCount = 0x433 - exp;

+    z = sig>>shiftCount;

+    if ( exact && ( (uint_fast64_t) z<<shiftCount != sig ) ) {

+        softfloat_exceptionFlags |= softfloat_flag_inexact;

+    }

+    return z;

+

+}

+

diff --git a/softfloat/f64_to_ui64.c b/softfloat/f64_to_ui64.c
new file mode 100755
index 0000000..9afebd7
--- /dev/null
+++ b/softfloat/f64_to_ui64.c
@@ -0,0 +1,41 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+uint_fast64_t f64_to_ui64( float64_t a, int_fast8_t roundingMode, bool exact )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    bool sign;

+    int_fast16_t exp;

+    uint_fast64_t sig;

+    int_fast16_t shiftCount;

+    struct uint64_extra sigExtra;

+

+    uA.f = a;

+    uiA = uA.ui;

+    sign = signF64UI( uiA );

+    exp = expF64UI( uiA );

+    sig = fracF64UI( uiA );

+    if ( exp ) sig |= UINT64_C( 0x0010000000000000 );

+    shiftCount = 0x433 - exp;

+    if ( shiftCount <= 0 ) {

+        if ( 0x43E < exp ) {

+            softfloat_raiseFlags( softfloat_flag_invalid );

+            return UINT64_C( 0xFFFFFFFFFFFFFFFF );

+        }

+        sigExtra.v = sig<<( - shiftCount );

+        sigExtra.extra = 0;

+    } else {

+        sigExtra = softfloat_shift64ExtraRightJam( sig, 0, shiftCount );

+    }

+    return

+        softfloat_roundPackToUI64(

+            sign, sigExtra.v, sigExtra.extra, roundingMode, exact );

+

+}

+

diff --git a/softfloat/f64_to_ui64_r_minMag.c b/softfloat/f64_to_ui64_r_minMag.c
new file mode 100755
index 0000000..a66d3ff
--- /dev/null
+++ b/softfloat/f64_to_ui64_r_minMag.c
@@ -0,0 +1,45 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+uint_fast64_t f64_to_ui64_r_minMag( float64_t a, bool exact )

+{

+    union ui64_f64 uA;

+    uint_fast64_t uiA;

+    int_fast16_t exp;

+    uint_fast64_t sig;

+    int_fast16_t shiftCount;

+    uint_fast64_t z;

+

+    uA.f = a;

+    uiA = uA.ui;

+    exp = expF64UI( uiA );

+    sig = fracF64UI( uiA );

+    if ( exp < 0x3FF ) {

+        if ( exact && ( exp | sig ) ) {

+            softfloat_exceptionFlags |= softfloat_flag_inexact;

+        }

+        return 0;

+    }

+    if ( signF64UI( uiA ) ) goto invalid;

+    shiftCount = exp - 0x433;

+    if ( 0 <= shiftCount ) {

+        if ( 0x43E < exp ) goto invalid;

+        z = ( sig | UINT64_C( 0x0010000000000000 ) )<<shiftCount;

+    } else {

+        sig |= UINT64_C( 0x0010000000000000 );

+        z = sig>>( - shiftCount );

+        if ( exact && (uint64_t) ( sig<<( shiftCount & 63 ) ) ) {

+            softfloat_exceptionFlags |= softfloat_flag_inexact;

+        }

+    }

+    return z;

+ invalid:

+    softfloat_raiseFlags( softfloat_flag_invalid );

+    return UINT64_C( 0xFFFFFFFFFFFFFFFF );

+

+}

+

diff --git a/softfloat/i32_to_f32.c b/softfloat/i32_to_f32.c
new file mode 100755
index 0000000..f51facd
--- /dev/null
+++ b/softfloat/i32_to_f32.c
@@ -0,0 +1,21 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+float32_t i32_to_f32( int_fast32_t a )

+{

+    bool sign;

+    union ui32_f32 uZ;

+

+    sign = ( a < 0 );

+    if ( ! ( a & 0x7FFFFFFF ) ) {

+        uZ.ui = sign ? packToF32UI( 1, 0x9E, 0 ) : 0;

+        return uZ.f;

+    }

+    return softfloat_normRoundPackToF32( sign, 0x9C, sign ? - a : a );

+

+}

+

diff --git a/softfloat/i32_to_f64.c b/softfloat/i32_to_f64.c
new file mode 100755
index 0000000..d42cbe8
--- /dev/null
+++ b/softfloat/i32_to_f64.c
@@ -0,0 +1,31 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+float64_t i32_to_f64( int_fast32_t a )

+{

+    uint_fast64_t uiZ;

+    bool sign;

+    uint_fast32_t absA;

+    int shiftCount;

+    union ui64_f64 uZ;

+

+    if ( ! a ) {

+        uiZ = 0;

+    } else {

+        sign = ( a < 0 );

+        absA = sign ? - a : a;

+        shiftCount = softfloat_countLeadingZeros32( absA ) + 21;

+        uiZ =

+            packToF64UI(

+                sign, 0x432 - shiftCount, (uint_fast64_t) absA<<shiftCount );

+    }

+    uZ.ui = uiZ;

+    return uZ.f;

+

+}

+

diff --git a/softfloat/i64_to_f32.c b/softfloat/i64_to_f32.c
new file mode 100755
index 0000000..4fecbb9
--- /dev/null
+++ b/softfloat/i64_to_f32.c
@@ -0,0 +1,36 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+float32_t i64_to_f32( int_fast64_t a )

+{

+    bool sign;

+    uint_fast64_t absA;

+    int shiftCount;

+    union ui32_f32 u;

+    uint_fast32_t sig;

+

+    sign = ( a < 0 );

+    absA = sign ? - (uint_fast64_t) a : a;

+    shiftCount = softfloat_countLeadingZeros64( absA ) - 40;

+    if ( 0 <= shiftCount ) {

+        u.ui =

+            a ? packToF32UI(

+                    sign, 0x95 - shiftCount, (uint_fast32_t) absA<<shiftCount )

+                : 0;

+        return u.f;

+    } else {

+        shiftCount += 7;

+        sig =

+            ( shiftCount < 0 )

+                ? softfloat_shortShift64RightJam( absA, - shiftCount )

+                : (uint_fast32_t) absA<<shiftCount;

+        return softfloat_roundPackToF32( sign, 0x9C - shiftCount, sig );

+    }

+

+}

+

diff --git a/softfloat/i64_to_f64.c b/softfloat/i64_to_f64.c
new file mode 100755
index 0000000..1add960
--- /dev/null
+++ b/softfloat/i64_to_f64.c
@@ -0,0 +1,21 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "softfloat.h"

+

+float64_t i64_to_f64( int_fast64_t a )

+{

+    bool sign;

+    union ui64_f64 uZ;

+

+    sign = ( a < 0 );

+    if ( ! ( a & UINT64_C( 0x7FFFFFFFFFFFFFFF ) ) ) {

+        uZ.ui = sign ? packToF64UI( 1, 0x43E, 0 ) : 0;

+        return uZ.f;

+    }

+    return softfloat_normRoundPackToF64( sign, 0x43C, sign ? - a : a );

+

+}

+

diff --git a/softfloat/internals.h b/softfloat/internals.h
new file mode 100755
index 0000000..5e6fd76
--- /dev/null
+++ b/softfloat/internals.h
@@ -0,0 +1,232 @@
+

+/*** UPDATE COMMENTS. ***/

+

+#include "softfloat_types.h"

+

+union ui32_f32 { uint32_t ui; float32_t f; };

+union ui64_f64 { uint64_t ui; float64_t f; };

+#ifdef LITTLEENDIAN

+union ui128_f128 { uint64_t ui0, ui64; float128_t f; };

+#else

+union ui128_f128 { uint64_t ui64, ui0; float128_t f; };

+#endif

+

+enum {

+    softfloat_mulAdd_subC    = 1,

+    softfloat_mulAdd_subProd = 2

+};

+

+uint_fast32_t

+ softfloat_roundPackToUI32( bool, uint_fast64_t, int_fast8_t, bool );

+uint_fast64_t

+ softfloat_roundPackToUI64(

+     bool, uint_fast64_t, uint_fast64_t, int_fast8_t, bool );

+/*----------------------------------------------------------------------------

+| Takes a 64-bit fixed-point value `absZ' with binary point between bits 6

+| and 7, and returns the properly rounded 32-bit integer corresponding to the

+| input.  If `zSign' is 1, the input is negated before being converted to an

+| integer.  Bit 63 of `absZ' must be zero.  Ordinarily, the fixed-point input

+| is simply rounded to an integer, with the inexact exception raised if the

+| input cannot be represented exactly as an integer.  However, if the fixed-

+| point input is too large, the invalid exception is raised and the largest

+| positive or negative integer is returned.

+*----------------------------------------------------------------------------*/

+int_fast32_t

+ softfloat_roundPackToI32( bool, uint_fast64_t, int_fast8_t, bool );

+/*----------------------------------------------------------------------------

+| Takes the 128-bit fixed-point value formed by concatenating `absZ0' and

+| `absZ1', with binary point between bits 63 and 64 (between the input words),

+| and returns the properly rounded 64-bit integer corresponding to the input.

+| If `zSign' is 1, the input is negated before being converted to an integer.

+| Ordinarily, the fixed-point input is simply rounded to an integer, with

+| the inexact exception raised if the input cannot be represented exactly as

+| an integer.  However, if the fixed-point input is too large, the invalid

+| exception is raised and the largest positive or negative integer is

+| returned.

+*----------------------------------------------------------------------------*/

+int_fast64_t

+ softfloat_roundPackToI64(

+     bool, uint_fast64_t, uint_fast64_t, int_fast8_t, bool );

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the single-precision floating-point value `a' is a NaN;

+| otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+#define isNaNF32UI( ui ) (0xFF000000<(uint32_t)((uint_fast32_t)(ui)<<1))

+/*----------------------------------------------------------------------------

+| Returns the sign bit of the single-precision floating-point value `a'.

+*----------------------------------------------------------------------------*/

+#define signF32UI( a ) ((bool)((uint32_t)(a)>>31))

+/*----------------------------------------------------------------------------

+| Returns the exponent bits of the single-precision floating-point value `a'.

+*----------------------------------------------------------------------------*/

+#define expF32UI( a ) ((int_fast16_t)((a)>>23)&0xFF)

+/*----------------------------------------------------------------------------

+| Returns the fraction bits of the single-precision floating-point value `a'.

+*----------------------------------------------------------------------------*/

+#define fracF32UI( a ) ((a)&0x007FFFFF)

+/*----------------------------------------------------------------------------

+| Packs the sign `zSign', exponent `zExp', and significand `zSig' into a

+| single-precision floating-point value, returning the result.  After being

+| shifted into the proper positions, the three fields are simply added

+| together to form the result.  This means that any integer portion of `zSig'

+| will be added into the exponent.  Since a properly normalized significand

+| will have an integer portion equal to 1, the `zExp' input should be 1 less

+| than the desired result exponent whenever `zSig' is a complete, normalized

+| significand.

+*----------------------------------------------------------------------------*/

+#define packToF32UI( sign, exp, sig ) (((uint32_t)(sign)<<31)+((uint32_t)(exp)<<23)+(sig))

+

+/*----------------------------------------------------------------------------

+| Normalizes the subnormal single-precision floating-point value represented

+| by the denormalized significand `aSig'.  The normalized exponent and

+| significand are stored at the locations pointed to by `zExpPtr' and

+| `zSigPtr', respectively.

+*----------------------------------------------------------------------------*/

+struct exp16_sig32 { int_fast16_t exp; uint_fast32_t sig; };

+struct exp16_sig32 softfloat_normSubnormalF32Sig( uint_fast32_t );

+

+/*----------------------------------------------------------------------------

+| Takes an abstract floating-point value having sign `zSign', exponent `zExp',

+| and significand `zSig', and returns the proper single-precision floating-

+| point value corresponding to the abstract input.  Ordinarily, the abstract

+| value is simply rounded and packed into the single-precision format, with

+| the inexact exception raised if the abstract input cannot be represented

+| exactly.  However, if the abstract value is too large, the overflow and

+| inexact exceptions are raised and an infinity or maximal finite value is

+| returned.  If the abstract value is too small, the input value is rounded to

+| a subnormal number, and the underflow and inexact exceptions are raised if

+| the abstract input cannot be represented exactly as a subnormal single-

+| precision floating-point number.

+|     The input significand `zSig' has its binary point between bits 30

+| and 29, which is 7 bits to the left of the usual location.  This shifted

+| significand must be normalized or smaller.  If `zSig' is not normalized,

+| `zExp' must be 0; in that case, the result returned is a subnormal number,

+| and it must not require rounding.  In the usual case that `zSig' is

+| normalized, `zExp' must be 1 less than the ``true'' floating-point exponent.

+| The handling of underflow and overflow follows the IEC/IEEE Standard for

+| Binary Floating-Point Arithmetic.

+*----------------------------------------------------------------------------*/

+float32_t softfloat_roundPackToF32( bool, int_fast16_t, uint_fast32_t );

+/*----------------------------------------------------------------------------

+| Takes an abstract floating-point value having sign `zSign', exponent `zExp',

+| and significand `zSig', and returns the proper single-precision floating-

+| point value corresponding to the abstract input.  This routine is just like

+| `roundAndPackFloat32' except that `zSig' does not have to be normalized.

+| Bit 31 of `zSig' must be zero, and `zExp' must be 1 less than the ``true''

+| floating-point exponent.

+*----------------------------------------------------------------------------*/

+float32_t softfloat_normRoundPackToF32( bool, int_fast16_t, uint_fast32_t );

+

+/*----------------------------------------------------------------------------

+| Returns the result of adding the absolute values of the single-precision

+| floating-point values `a' and `b'.  If `zSign' is 1, the sum is negated

+| before being returned.  `zSign' is ignored if the result is a NaN.

+| The addition is performed according to the IEC/IEEE Standard for Binary

+| Floating-Point Arithmetic.

+*----------------------------------------------------------------------------*/

+float32_t softfloat_addMagsF32( uint_fast32_t, uint_fast32_t, bool );

+/*----------------------------------------------------------------------------

+| Returns the result of subtracting the absolute values of the single-

+| precision floating-point values `a' and `b'.  If `zSign' is 1, the

+| difference is negated before being returned.  `zSign' is ignored if the

+| result is a NaN.  The subtraction is performed according to the IEC/IEEE

+| Standard for Binary Floating-Point Arithmetic.

+*----------------------------------------------------------------------------*/

+float32_t softfloat_subMagsF32( uint_fast32_t, uint_fast32_t, bool );

+/*----------------------------------------------------------------------------

+*----------------------------------------------------------------------------*/

+float32_t

+ softfloat_mulAddF32( int, uint_fast32_t, uint_fast32_t, uint_fast32_t );

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the double-precision floating-point value `a' is a NaN;

+| otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+#define isNaNF64UI( ui ) (UINT64_C(0xFFE0000000000000)<(uint64_t)((uint_fast64_t)(ui)<<1))

+/*----------------------------------------------------------------------------

+| Returns the sign bit of the double-precision floating-point value `a'.

+*----------------------------------------------------------------------------*/

+#define signF64UI( a ) ((bool)((uint64_t)(a)>>63))

+/*----------------------------------------------------------------------------

+| Returns the exponent bits of the double-precision floating-point value `a'.

+*----------------------------------------------------------------------------*/

+#define expF64UI( a ) ((int_fast16_t)((a)>>52)&0x7FF)

+/*----------------------------------------------------------------------------

+| Returns the fraction bits of the double-precision floating-point value `a'.

+*----------------------------------------------------------------------------*/

+#define fracF64UI( a ) ((a)&UINT64_C(0x000FFFFFFFFFFFFF))

+/*----------------------------------------------------------------------------

+| Packs the sign `zSign', exponent `zExp', and significand `zSig' into a

+| double-precision floating-point value, returning the result.  After being

+| shifted into the proper positions, the three fields are simply added

+| together to form the result.  This means that any integer portion of `zSig'

+| will be added into the exponent.  Since a properly normalized significand

+| will have an integer portion equal to 1, the `zExp' input should be 1 less

+| than the desired result exponent whenever `zSig' is a complete, normalized

+| significand.

+*----------------------------------------------------------------------------*/

+#define packToF64UI( sign, exp, sig ) (((uint64_t)(sign)<<63)+((uint64_t)(exp)<<52)+(sig))

+

+/*----------------------------------------------------------------------------

+| Normalizes the subnormal double-precision floating-point value represented

+| by the denormalized significand `aSig'.  The normalized exponent and

+| significand are stored at the locations pointed to by `zExpPtr' and

+| `zSigPtr', respectively.

+*----------------------------------------------------------------------------*/

+struct exp16_sig64 { int_fast16_t exp; uint_fast64_t sig; };

+struct exp16_sig64 softfloat_normSubnormalF64Sig( uint_fast64_t );

+

+/*----------------------------------------------------------------------------

+| Takes an abstract floating-point value having sign `zSign', exponent `zExp',

+| and significand `zSig', and returns the proper double-precision floating-

+| point value corresponding to the abstract input.  Ordinarily, the abstract

+| value is simply rounded and packed into the double-precision format, with

+| the inexact exception raised if the abstract input cannot be represented

+| exactly.  However, if the abstract value is too large, the overflow and

+| inexact exceptions are raised and an infinity or maximal finite value is

+| returned.  If the abstract value is too small, the input value is rounded

+| to a subnormal number, and the underflow and inexact exceptions are raised

+| if the abstract input cannot be represented exactly as a subnormal double-

+| precision floating-point number.

+|     The input significand `zSig' has its binary point between bits 62

+| and 61, which is 10 bits to the left of the usual location.  This shifted

+| significand must be normalized or smaller.  If `zSig' is not normalized,

+| `zExp' must be 0; in that case, the result returned is a subnormal number,

+| and it must not require rounding.  In the usual case that `zSig' is

+| normalized, `zExp' must be 1 less than the ``true'' floating-point exponent.

+| The handling of underflow and overflow follows the IEC/IEEE Standard for

+| Binary Floating-Point Arithmetic.

+*----------------------------------------------------------------------------*/

+float64_t softfloat_roundPackToF64( bool, int_fast16_t, uint_fast64_t );

+/*----------------------------------------------------------------------------

+| Takes an abstract floating-point value having sign `zSign', exponent `zExp',

+| and significand `zSig', and returns the proper double-precision floating-

+| point value corresponding to the abstract input.  This routine is just like

+| `roundAndPackFloat64' except that `zSig' does not have to be normalized.

+| Bit 63 of `zSig' must be zero, and `zExp' must be 1 less than the ``true''

+| floating-point exponent.

+*----------------------------------------------------------------------------*/

+float64_t softfloat_normRoundPackToF64( bool, int_fast16_t, uint_fast64_t );

+

+/*----------------------------------------------------------------------------

+| Returns the result of adding the absolute values of the double-precision

+| floating-point values `a' and `b'.  If `zSign' is 1, the sum is negated

+| before being returned.  `zSign' is ignored if the result is a NaN.

+| The addition is performed according to the IEC/IEEE Standard for Binary

+| Floating-Point Arithmetic.

+*----------------------------------------------------------------------------*/

+float64_t softfloat_addMagsF64( uint_fast64_t, uint_fast64_t, bool );

+/*----------------------------------------------------------------------------

+| Returns the result of subtracting the absolute values of the double-

+| precision floating-point values `a' and `b'.  If `zSign' is 1, the

+| difference is negated before being returned.  `zSign' is ignored if the

+| result is a NaN.  The subtraction is performed according to the IEC/IEEE

+| Standard for Binary Floating-Point Arithmetic.

+*----------------------------------------------------------------------------*/

+float64_t softfloat_subMagsF64( uint_fast64_t, uint_fast64_t, bool );

+/*----------------------------------------------------------------------------

+*----------------------------------------------------------------------------*/

+float64_t

+ softfloat_mulAddF64( int, uint_fast64_t, uint_fast64_t, uint_fast64_t );

+

diff --git a/softfloat/primitives.h b/softfloat/primitives.h
new file mode 100755
index 0000000..71038ea
--- /dev/null
+++ b/softfloat/primitives.h
@@ -0,0 +1,628 @@
+
+/*============================================================================
+
+This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
+Arithmetic Package, Release 3.
+
+*** UPDATE
+
+Written by John R. Hauser.  This work was made possible in part by the
+International Computer Science Institute, located at Suite 600, 1947 Center
+Street, Berkeley, California 94704.  Funding was partially provided by the
+National Science Foundation under grant MIP-9311980.  The original version
+of this code was written as part of a project to build a fixed-point vector
+processor in collaboration with the University of California at Berkeley,
+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
+is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
+arithmetic/SoftFloat.html'.
+
+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has
+been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
+RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
+AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
+COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
+EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
+INSTITUTE (possibly via similar legal notice) AGAINST ALL LOSSES, COSTS, OR
+OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
+
+Derivative works are acceptable, even for commercial purposes, so long as
+(1) the source code for the derivative work includes prominent notice that
+the work is derivative, and (2) the source code includes prominent notice with
+these four paragraphs for those parts of this code that are retained.
+
+=============================================================================*/
+
+#include <stdbool.h>
+#include <stdint.h>
+
+/*** CHANGE TO USE `fast' INTEGER TYPES? ***/
+/*** ADD 80-BIT FUNCTIONS? ***/
+
+#ifdef LITTLEENDIAN
+struct uintx80 { uint64_t v0; uint16_t v64; };
+struct uint128 { uint64_t v0, v64; };
+struct uint192 { uint64_t v0, v64, v128; };
+struct uint256 { uint64_t v0, v64, v128, v192; };
+#else
+struct uintx80 { uint16_t v64; uint64_t v0; };
+struct uint128 { uint64_t v64, v0; };
+struct uint192 { uint64_t v128, v64, v0; };
+struct uint256 { uint64_t v256, v128, v64, v0; };
+#endif
+
+struct uint64_extra { uint64_t v, extra; };
+struct uint128_extra { uint64_t v64; uint64_t v0; uint64_t extra; };
+
+
+/*** SHIFT COUNTS CANNOT BE ZERO.  MUST CHECK BEFORE CALLING! ***/
+
+
+/*----------------------------------------------------------------------------
+| Returns 1 if the 128-bit value formed by concatenating `a0' and `a1'
+| is equal to the 128-bit value formed by concatenating `b0' and `b1'.
+| Otherwise, returns 0.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 1 <= INLINE_LEVEL )
+INLINE bool
+ softfloat_eq128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )
+    { return ( a64 == b64 ) && ( a0 == b0 ); }
+#else
+bool softfloat_eq128( uint64_t, uint64_t, uint64_t, uint64_t );
+#endif
+
+/*----------------------------------------------------------------------------
+| Returns 1 if the 128-bit value formed by concatenating `a0' and `a1' is less
+| than or equal to the 128-bit value formed by concatenating `b0' and `b1'.
+| Otherwise, returns 0.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 1 <= INLINE_LEVEL )
+INLINE bool
+ softfloat_le128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )
+    { return ( a64 < b64 ) || ( ( a64 == b64 ) && ( a0 <= b0 ) ); }
+#else
+bool softfloat_le128( uint64_t, uint64_t, uint64_t, uint64_t );
+#endif
+
+/*----------------------------------------------------------------------------
+| Returns 1 if the 128-bit value formed by concatenating `a0' and `a1' is less
+| than the 128-bit value formed by concatenating `b0' and `b1'.  Otherwise,
+| returns 0.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 1 <= INLINE_LEVEL )
+INLINE bool
+ softfloat_lt128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )
+    { return ( a64 < b64 ) || ( ( a64 == b64 ) && ( a0 < b0 ) ); }
+#else
+bool softfloat_lt128( uint64_t, uint64_t, uint64_t, uint64_t );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shifts the 128-bit value formed by concatenating `a0' and `a1' left by the
+| number of bits given in `count'.  Any bits shifted off are lost.  The value
+| of `count' must be less than 64.  The result is broken into two 64-bit
+| pieces which are stored at the locations pointed to by `z0Ptr' and `z1Ptr'.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 2 <= INLINE_LEVEL )
+INLINE struct uint128
+ softfloat_shortShift128Left( uint64_t a64, uint64_t a0, unsigned int count )
+{
+    struct uint128 z;
+    z.v64 = a64<<count | a0>>( ( - count ) & 63 );
+    z.v0 = a0<<count;
+    return z;
+}
+#else
+struct uint128 softfloat_shortShift128Left( uint64_t, uint64_t, unsigned int );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shifts the 192-bit value formed by concatenating `a0', `a1', and `a2' left
+| by the number of bits given in `count'.  Any bits shifted off are lost.
+| The value of `count' must be less than 64.  The result is broken into three
+| 64-bit pieces which are stored at the locations pointed to by `z0Ptr',
+| `z1Ptr', and `z2Ptr'.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 3 <= INLINE_LEVEL )
+INLINE struct uint192
+ softfloat_shortShift192Left(
+     uint64_t a128, uint64_t a64, uint64_t a0, unsigned int count )
+{
+    unsigned int negCount = - count;
+    struct uint192 z;
+    z.v128 = a128<<count | a64>>( negCount & 63 );
+    z.v64 = a64<<count | a0>>( negCount & 63 );
+    z.v0 = a0<<count;
+    return z;
+}
+#else
+struct uint192
+ softfloat_shortShift192Left( uint64_t, uint64_t, uint64_t, unsigned int );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shifts `a' right by the number of bits given in `count'.  If any nonzero
+| bits are shifted off, they are ``jammed'' into the least significant bit of
+| the result by setting the least significant bit to 1.  The value of `count'
+| can be arbitrarily large; in particular, if `count' is greater than 32, the
+| result will be either 0 or 1, depending on whether `a' is zero or nonzero.
+| The result is stored in the location pointed to by `zPtr'.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 2 <= INLINE_LEVEL )
+INLINE uint32_t softfloat_shift32RightJam( uint32_t a, unsigned int count )
+{
+    return
+        ( count < 32 )
+            ? a>>count | ( (uint32_t) ( a<<( ( - count ) & 31 ) ) != 0 )
+            : ( a != 0 );
+}
+#else
+uint32_t softfloat_shift32RightJam( uint32_t, unsigned int );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shift count is less than 32.
+*----------------------------------------------------------------------------*/
+#if defined INLINE
+INLINE uint32_t softfloat_shortShift32Right1Jam( uint32_t a )
+    { return a>>1 | ( a & 1 ); }
+#else
+uint32_t softfloat_shortShift32Right1Jam( uint32_t );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shifts `a' right by the number of bits given in `count'.  If any nonzero
+| bits are shifted off, they are ``jammed'' into the least significant bit of
+| the result by setting the least significant bit to 1.  The value of `count'
+| can be arbitrarily large; in particular, if `count' is greater than 64, the
+| result will be either 0 or 1, depending on whether `a' is zero or nonzero.
+| The result is stored in the location pointed to by `zPtr'.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 3 <= INLINE_LEVEL )
+INLINE uint64_t softfloat_shift64RightJam( uint64_t a, unsigned int count )
+{
+    return
+        ( count < 64 )
+            ? a>>count | ( (uint64_t) ( a<<( ( - count ) & 63 ) ) != 0 )
+            : ( a != 0 );
+}
+#else
+uint64_t softfloat_shift64RightJam( uint64_t, unsigned int );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shift count is less than 64.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 2 <= INLINE_LEVEL )
+INLINE uint64_t
+ softfloat_shortShift64RightJam( uint64_t a, unsigned int count )
+    { return a>>count | ( ( a & ( ( (uint64_t) 1<<count ) - 1 ) ) != 0 ); }
+#else
+uint64_t softfloat_shortShift64RightJam( uint64_t, unsigned int );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shifts the 128-bit value formed by concatenating `a0' and `a1' right by 64
+| _plus_ the number of bits given in `count'.  The shifted result is at most
+| 64 nonzero bits; this is stored at the location pointed to by `z0Ptr'.  The
+| bits shifted off form a second 64-bit result as follows:  The _last_ bit
+| shifted off is the most-significant bit of the extra result, and the other
+| 63 bits of the extra result are all zero if and only if _all_but_the_last_
+| bits shifted off were all zero.  This extra result is stored in the location
+| pointed to by `z1Ptr'.  The value of `count' can be arbitrarily large.
+|     (This routine makes more sense if `a0' and `a1' are considered to form
+| a fixed-point value with binary point between `a0' and `a1'.  This fixed-
+| point value is shifted right by the number of bits given in `count', and
+| the integer part of the result is returned at the location pointed to by
+| `z0Ptr'.  The fractional part of the result may be slightly corrupted as
+| described above, and is returned at the location pointed to by `z1Ptr'.)
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 3 <= INLINE_LEVEL )
+INLINE struct uint64_extra
+ softfloat_shift64ExtraRightJam(
+     uint64_t a, uint64_t extra, unsigned int count )
+{
+    struct uint64_extra z;
+    if ( count < 64 ) {
+        z.v = a>>count;
+        z.extra = a<<( ( - count ) & 63 );
+    } else {
+        z.v = 0;
+        z.extra = ( count == 64 ) ? a : ( a != 0 );
+    }
+    z.extra |= ( extra != 0 );
+    return z;
+}
+#else
+struct uint64_extra
+ softfloat_shift64ExtraRightJam( uint64_t, uint64_t, unsigned int );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shift count is less than 64.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 2 <= INLINE_LEVEL )
+INLINE struct uint64_extra
+ softfloat_shortShift64ExtraRightJam(
+     uint64_t a, uint64_t extra, unsigned int count )
+{
+    struct uint64_extra z;
+    z.v = a>>count;
+    z.extra = a<<( ( - count ) & 63 ) | ( extra != 0 );
+    return z;
+}
+#else
+struct uint64_extra
+ softfloat_shortShift64ExtraRightJam( uint64_t, uint64_t, unsigned int );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shifts the 128-bit value formed by concatenating `a0' and `a1' right by the
+| number of bits given in `count'.  Any bits shifted off are lost.  The value
+| of `count' can be arbitrarily large; in particular, if `count' is greater
+| than 128, the result will be 0.  The result is broken into two 64-bit pieces
+| which are stored at the locations pointed to by `z0Ptr' and `z1Ptr'.
+*----------------------------------------------------------------------------*/
+/*----------------------------------------------------------------------------
+| Shift count is less than 64.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 2 <= INLINE_LEVEL )
+INLINE struct uint128
+ softfloat_shortShift128Right( uint64_t a64, uint64_t a0, unsigned int count )
+{
+    struct uint128 z;
+    z.v64 = a64>>count;
+    z.v0 = a64<<( ( - count ) & 63 ) | a0>>count;
+    return z;
+}
+#else
+struct uint128
+ softfloat_shortShift128Right( uint64_t, uint64_t, unsigned int );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shifts the 128-bit value formed by concatenating `a0' and `a1' right by the
+| number of bits given in `count'.  If any nonzero bits are shifted off, they
+| are ``jammed'' into the least significant bit of the result by setting the
+| least significant bit to 1.  The value of `count' can be arbitrarily large;
+| in particular, if `count' is greater than 128, the result will be either
+| 0 or 1, depending on whether the concatenation of `a0' and `a1' is zero or
+| nonzero.  The result is broken into two 64-bit pieces which are stored at
+| the locations pointed to by `z0Ptr' and `z1Ptr'.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 4 <= INLINE_LEVEL )
+INLINE struct uint128
+ softfloat_shift128RightJam( uint64_t a64, uint64_t a0, unsigned int count )
+{
+    unsigned int negCount;
+    struct uint128 z;
+    if ( count < 64 ) {
+        negCount = - count;
+        z.v64 = a64>>( count & 63 );
+        z.v0 =
+            a64<<( negCount & 63 ) | a0>>count
+                | ( (uint64_t) ( a0<<( negCount & 63 ) ) != 0 );
+    } else {
+        z.v64 = 0;
+        z.v0 =
+            ( count < 128 )
+                ? a64>>( count & 63 )
+                      | ( ( ( a64 & ( ( (uint64_t) 1<<( count & 63 ) ) - 1 ) )
+                                | a0 )
+                              != 0 )
+                : ( ( a64 | a0 ) != 0 );
+    }
+    return z;
+}
+#else
+struct uint128
+ softfloat_shift128RightJam( uint64_t, uint64_t, unsigned int );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shifts the 192-bit value formed by concatenating `a0', `a1', and `a2' right
+| by 64 _plus_ the number of bits given in `count'.  The shifted result is
+| at most 128 nonzero bits; these are broken into two 64-bit pieces which are
+| stored at the locations pointed to by `z0Ptr' and `z1Ptr'.  The bits shifted
+| off form a third 64-bit result as follows:  The _last_ bit shifted off is
+| the most-significant bit of the extra result, and the other 63 bits of the
+| extra result are all zero if and only if _all_but_the_last_ bits shifted off
+| were all zero.  This extra result is stored in the location pointed to by
+| `z2Ptr'.  The value of `count' can be arbitrarily large.
+|     (This routine makes more sense if `a0', `a1', and `a2' are considered
+| to form a fixed-point value with binary point between `a1' and `a2'.  This
+| fixed-point value is shifted right by the number of bits given in `count',
+| and the integer part of the result is returned at the locations pointed to
+| by `z0Ptr' and `z1Ptr'.  The fractional part of the result may be slightly
+| corrupted as described above, and is returned at the location pointed to by
+| `z2Ptr'.)
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 5 <= INLINE_LEVEL )
+INLINE struct uint128_extra
+ softfloat_shift128ExtraRightJam(
+     uint64_t a64, uint64_t a0, uint64_t extra, unsigned int count )
+{
+    unsigned int negCount = - count;
+    struct uint128_extra z;
+    if ( count < 64 ) {
+        z.v64 = a64>>count;
+        z.v0 = a64<<( negCount & 63 ) | a0>>count;
+        z.extra = a0<<( negCount & 63 );
+    } else {
+        z.v64 = 0;
+        if ( count == 64 ) {
+            z.v0 = a64;
+            z.extra = a0;
+        } else {
+            extra |= a0;
+            if ( count < 128 ) {
+                z.v0 = a64>>( count & 63 );
+                z.extra = a64<<( negCount & 63 );
+            } else {
+                z.v0 = 0;
+                z.extra = ( count == 128 ) ? a64 : ( a64 != 0 );
+            }
+        }
+    }
+    z.extra |= ( extra != 0 );
+    return z;
+}
+#else
+struct uint128_extra
+ softfloat_shift128ExtraRightJam( uint64_t, uint64_t, uint64_t, unsigned int );
+#endif
+
+/*----------------------------------------------------------------------------
+| Shift count is less than 64.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 3 <= INLINE_LEVEL )
+INLINE struct uint128_extra
+ softfloat_shortShift128ExtraRightJam(
+     uint64_t a64, uint64_t a0, uint64_t extra, unsigned int count )
+{
+    unsigned int negCount = - count;
+    struct uint128_extra z;
+    z.v64 = a64>>count;
+    z.v0 = a64<<( negCount & 63 ) | a0>>count;
+    z.extra = a0<<( negCount & 63 ) | ( extra != 0 );
+    return z;
+}
+#else
+struct uint128_extra
+ softfloat_shortShift128ExtraRightJam(
+     uint64_t, uint64_t, uint64_t, unsigned int );
+#endif
+
+extern const uint8_t softfloat_countLeadingZeros8[ 256 ];
+
+/*----------------------------------------------------------------------------
+| Returns the number of leading 0 bits before the most-significant 1 bit of
+| `a'.  If `a' is zero, 32 is returned.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 2 <= INLINE_LEVEL )
+INLINE int softfloat_countLeadingZeros32( uint32_t a )
+{
+    int count = 0;
+    if ( a < 0x10000 ) {
+        count = 16;
+        a <<= 16;
+    }
+    if ( a < 0x1000000 ) {
+        count += 8;
+        a <<= 8;
+    }
+    count += softfloat_countLeadingZeros8[ a>>24 ];
+    return count;
+}
+#else
+int softfloat_countLeadingZeros32( uint32_t );
+#endif
+
+/*----------------------------------------------------------------------------
+| Returns the number of leading 0 bits before the most-significant 1 bit of
+| `a'.  If `a' is zero, 64 is returned.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 4 <= INLINE_LEVEL )
+INLINE int softfloat_countLeadingZeros64( uint64_t a )
+{
+    int count = 32;
+    uint32_t a32 = a;
+    if ( UINT64_C( 0x100000000 ) <= a ) {
+        count = 0;
+        a32 = a>>32;
+    }
+    /*------------------------------------------------------------------------
+    | From here, result is current count + count leading zeros of `a32'.
+    *------------------------------------------------------------------------*/
+    if ( a32 < 0x10000 ) {
+        count += 16;
+        a32 <<= 16;
+    }
+    if ( a32 < 0x1000000 ) {
+        count += 8;
+        a32 <<= 8;
+    }
+    count += softfloat_countLeadingZeros8[ a32>>24 ];
+    return count;
+}
+#else
+int softfloat_countLeadingZeros64( uint64_t );
+#endif
+
+/*----------------------------------------------------------------------------
+| Adds the 128-bit value formed by concatenating `a0' and `a1' to the 128-bit
+| value formed by concatenating `b0' and `b1'.  Addition is modulo 2^128, so
+| any carry out is lost.  The result is broken into two 64-bit pieces which
+| are stored at the locations pointed to by `z0Ptr' and `z1Ptr'.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 2 <= INLINE_LEVEL )
+INLINE struct uint128
+ softfloat_add128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )
+{
+    struct uint128 z;
+    z.v0 = a0 + b0;
+    z.v64 = a64 + b64;
+    z.v64 += ( z.v0 < a0 );
+    return z;
+}
+#else
+struct uint128 softfloat_add128( uint64_t, uint64_t, uint64_t, uint64_t );
+#endif
+
+/*----------------------------------------------------------------------------
+| Adds the 192-bit value formed by concatenating `a0', `a1', and `a2' to the
+| 192-bit value formed by concatenating `b0', `b1', and `b2'.  Addition is
+| modulo 2^192, so any carry out is lost.  The result is broken into three
+| 64-bit pieces which are stored at the locations pointed to by `z0Ptr',
+| `z1Ptr', and `z2Ptr'.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 3 <= INLINE_LEVEL )
+INLINE struct uint192
+ softfloat_add192(
+     uint64_t a128,
+     uint64_t a64,
+     uint64_t a0,
+     uint64_t b128,
+     uint64_t b64,
+     uint64_t b0
+ )
+{
+    struct uint192 z;
+    unsigned int carry64, carry128;
+    z.v0 = a0 + b0;
+    carry64 = ( z.v0 < a0 );
+    z.v64 = a64 + b64;
+    carry128 = ( z.v64 < a64 );
+    z.v128 = a128 + b128;
+    z.v64 += carry64;
+    carry128 += ( z.v64 < carry64 );
+    z.v128 += carry128;
+    return z;
+}
+#else
+struct uint192
+ softfloat_add192(
+     uint64_t, uint64_t, uint64_t, uint64_t, uint64_t, uint64_t );
+#endif
+
+/*----------------------------------------------------------------------------
+| Subtracts the 128-bit value formed by concatenating `b0' and `b1' from the
+| 128-bit value formed by concatenating `a0' and `a1'.  Subtraction is modulo
+| 2^128, so any borrow out (carry out) is lost.  The result is broken into two
+| 64-bit pieces which are stored at the locations pointed to by `z0Ptr' and
+| `z1Ptr'.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 2 <= INLINE_LEVEL )
+INLINE struct uint128
+ softfloat_sub128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )
+{
+    struct uint128 z;
+    z.v0 = a0 - b0;
+    z.v64 = a64 - b64;
+    z.v64 -= ( a0 < b0 );
+    return z;
+}
+#else
+struct uint128 softfloat_sub128( uint64_t, uint64_t, uint64_t, uint64_t );
+#endif
+
+/*----------------------------------------------------------------------------
+| Subtracts the 192-bit value formed by concatenating `b0', `b1', and `b2'
+| from the 192-bit value formed by concatenating `a0', `a1', and `a2'.
+| Subtraction is modulo 2^192, so any borrow out (carry out) is lost.  The
+| result is broken into three 64-bit pieces which are stored at the locations
+| pointed to by `z0Ptr', `z1Ptr', and `z2Ptr'.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 3 <= INLINE_LEVEL )
+INLINE struct uint192
+ softfloat_sub192(
+     uint64_t a128,
+     uint64_t a64,
+     uint64_t a0,
+     uint64_t b128,
+     uint64_t b64,
+     uint64_t b0
+ )
+{
+    struct uint192 z;
+    unsigned int borrow64, borrow128;
+    z.v0 = a0 - b0;
+    borrow64 = ( a0 < b0 );
+    z.v64 = a64 - b64;
+    borrow128 = ( a64 < b64 );
+    z.v128 = a128 - b128;
+    borrow128 += ( z.v64 < borrow64 );
+    z.v64 -= borrow64;
+    z.v128 -= borrow128;
+    return z;
+}
+#else
+struct uint192
+ softfloat_sub192(
+     uint64_t, uint64_t, uint64_t, uint64_t, uint64_t, uint64_t );
+#endif
+
+/*----------------------------------------------------------------------------
+| Multiplies `a' by `b' to obtain a 128-bit product.  The product is broken
+| into two 64-bit pieces which are stored at the locations pointed to by
+| `z0Ptr' and `z1Ptr'.
+*----------------------------------------------------------------------------*/
+#if defined INLINE_LEVEL && ( 4 <= INLINE_LEVEL )
+INLINE struct uint128 softfloat_mul64To128( uint64_t a, uint64_t b )
+{
+    uint32_t a32 = a>>32;
+    uint32_t a0 = a;
+    uint32_t b32 = b>>32;
+    uint32_t b0 = b;
+    struct uint128 z;
+    uint64_t mid1, mid2, mid;
+    z.v0 = (uint64_t) a0 * b0;
+    mid1 = (uint64_t) a32 * b0;
+    mid2 = (uint64_t) a0 * b32;
+    z.v64 = (uint64_t) a32 * b32;
+    mid = mid1 + mid2;
+    z.v64 += ( (uint64_t) ( mid < mid1 ) )<<32 | mid>>32;
+    mid <<= 32;
+    z.v0 += mid;
+    z.v64 += ( z.v0 < mid );
+    return z;
+}
+#else
+struct uint128 softfloat_mul64To128( uint64_t, uint64_t );
+#endif
+
+/*----------------------------------------------------------------------------
+| Multiplies the 128-bit value formed by concatenating `a0' and `a1' by
+| `b' to obtain a 192-bit product.  The product is broken into three 64-bit
+| pieces which are stored at the locations pointed to by `z0Ptr', `z1Ptr', and
+| `z2Ptr'.
+*----------------------------------------------------------------------------*/
+struct uint192 softfloat_mul128By64To192( uint64_t, uint64_t, uint64_t );
+/*----------------------------------------------------------------------------
+| Multiplies the 128-bit value formed by concatenating `a0' and `a1' to the
+| 128-bit value formed by concatenating `b0' and `b1' to obtain a 256-bit
+| product.  The product is broken into four 64-bit pieces which are stored at
+| the locations pointed to by `z0Ptr', `z1Ptr', `z2Ptr', and `z3Ptr'.
+*----------------------------------------------------------------------------*/
+struct uint256 softfloat_mul128To256( uint64_t, uint64_t, uint64_t, uint64_t );
+
+/*----------------------------------------------------------------------------
+| Returns an approximation to the 64-bit integer quotient obtained by dividing
+| `b' into the 128-bit value formed by concatenating `a0' and `a1'.  The
+| divisor `b' must be at least 2^63.  If q is the exact quotient truncated
+| toward zero, the approximation returned lies between q and q + 2 inclusive.
+| If the exact quotient q is larger than 64 bits, the maximum positive 64-bit
+| unsigned integer is returned.
+*----------------------------------------------------------------------------*/
+uint64_t softfloat_estimateDiv128To64( uint64_t, uint64_t, uint64_t );
+
+/*----------------------------------------------------------------------------
+| Returns an approximation to the square root of the 32-bit significand given
+| by `a'.  Considered as an integer, `a' must be at least 2^31.  If bit 0 of
+| `aExp' (the least significant bit) is 1, the integer returned approximates
+| 2^31*sqrt(`a'/2^31), where `a' is considered an integer.  If bit 0 of `aExp'
+| is 0, the integer returned approximates 2^31*sqrt(`a'/2^30).  In either
+| case, the approximation returned lies strictly within +/-2 of the exact
+| value.
+*----------------------------------------------------------------------------*/
+uint32_t softfloat_estimateSqrt32( unsigned int, uint32_t );
+
diff --git a/softfloat/s_add128.c b/softfloat/s_add128.c
new file mode 100755
index 0000000..59c0348
--- /dev/null
+++ b/softfloat/s_add128.c
@@ -0,0 +1,17 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint128

+ softfloat_add128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )

+{

+    struct uint128 z;

+

+    z.v0 = a0 + b0;

+    z.v64 = a64 + b64;

+    z.v64 += ( z.v0 < a0 );

+    return z;

+

+}

+

diff --git a/softfloat/s_add192.c b/softfloat/s_add192.c
new file mode 100755
index 0000000..543eb5d
--- /dev/null
+++ b/softfloat/s_add192.c
@@ -0,0 +1,30 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint192

+ softfloat_add192(

+     uint64_t a128,

+     uint64_t a64,

+     uint64_t a0,

+     uint64_t b128,

+     uint64_t b64,

+     uint64_t b0

+ )

+{

+    struct uint192 z;

+    unsigned int carry64, carry128;

+

+    z.v0 = a0 + b0;

+    carry64 = ( z.v0 < a0 );

+    z.v64 = a64 + b64;

+    carry128 = ( z.v64 < a64 );

+    z.v128 = a128 + b128;

+    z.v64 += carry64;

+    carry128 += ( z.v64 < carry64 );

+    z.v128 += carry128;

+    return z;

+

+}

+

diff --git a/softfloat/s_addMagsF32.c b/softfloat/s_addMagsF32.c
new file mode 100755
index 0000000..f361e2b
--- /dev/null
+++ b/softfloat/s_addMagsF32.c
@@ -0,0 +1,75 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "specialize.h"

+

+float32_t

+ softfloat_addMagsF32( uint_fast32_t uiA, uint_fast32_t uiB, bool signZ )

+{

+    int_fast16_t expA;

+    uint_fast32_t sigA;

+    int_fast16_t expB;

+    uint_fast32_t sigB;

+    int_fast16_t expDiff;

+    uint_fast32_t uiZ;

+    int_fast16_t expZ;

+    uint_fast32_t sigZ;

+    union ui32_f32 uZ;

+

+    expA = expF32UI( uiA );

+    sigA = fracF32UI( uiA );

+    expB = expF32UI( uiB );

+    sigB = fracF32UI( uiB );

+    expDiff = expA - expB;

+    sigA <<= 6;

+    sigB <<= 6;

+    if ( ! expDiff ) {

+        if ( expA == 0xFF ) {

+            if ( sigA | sigB ) goto propagateNaN;

+            uiZ = uiA;

+            goto uiZ;

+        }

+        if ( ! expA ) {

+            uiZ = packToF32UI( signZ, 0, ( uiA + uiB ) & 0x7FFFFFFF );

+            goto uiZ;

+        }

+        expZ = expA;

+        sigZ = 0x40000000 + sigA + sigB;

+    } else {

+        if ( expDiff < 0 ) {

+            if ( expB == 0xFF ) {

+                if ( sigB ) goto propagateNaN;

+                uiZ = packToF32UI( signZ, 0xFF, 0 );

+                goto uiZ;

+            }

+            expZ = expB;

+            sigA += expA ? 0x20000000 : sigA;

+            sigA = softfloat_shift32RightJam( sigA, - expDiff );

+        } else {

+            if ( expA == 0xFF ) {

+                if ( sigA ) goto propagateNaN;

+                uiZ = uiA;

+                goto uiZ;

+            }

+            expZ = expA;

+            sigB += expB ? 0x20000000 : sigB;

+            sigB = softfloat_shift32RightJam( sigB, expDiff );

+        }

+        sigZ = 0x20000000 + sigA + sigB;

+        if ( sigZ < 0x40000000 ) {

+            --expZ;

+            sigZ <<= 1;

+        }

+    }

+    return softfloat_roundPackToF32( signZ, expZ, sigZ );

+ propagateNaN:

+    uiZ = softfloat_propagateNaNF32UI( uiA, uiB );

+ uiZ:

+    uZ.ui = uiZ;

+    return uZ.f;

+

+}

+

diff --git a/softfloat/s_addMagsF64.c b/softfloat/s_addMagsF64.c
new file mode 100755
index 0000000..a81c3e4
--- /dev/null
+++ b/softfloat/s_addMagsF64.c
@@ -0,0 +1,77 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+#include "internals.h"
+#include "specialize.h"
+
+float64_t
+ softfloat_addMagsF64( uint_fast64_t uiA, uint_fast64_t uiB, bool signZ )
+{
+    int_fast16_t expA;
+    uint_fast64_t sigA;
+    int_fast16_t expB;
+    uint_fast64_t sigB;
+    int_fast16_t expDiff;
+    uint_fast64_t uiZ;
+    int_fast16_t expZ;
+    uint_fast64_t sigZ;
+    union ui64_f64 uZ;
+
+    expA = expF64UI( uiA );
+    sigA = fracF64UI( uiA );
+    expB = expF64UI( uiB );
+    sigB = fracF64UI( uiB );
+    expDiff = expA - expB;
+    sigA <<= 9;
+    sigB <<= 9;
+    if ( ! expDiff ) {
+        if ( expA == 0x7FF ) {
+            if ( sigA | sigB ) goto propagateNaN;
+            uiZ = uiA;
+            goto uiZ;
+        }
+        if ( ! expA ) {
+            uiZ =
+                packToF64UI(
+                    signZ, 0, ( uiA + uiB ) & UINT64_C( 0x7FFFFFFFFFFFFFFF ) );
+            goto uiZ;
+        }
+        expZ = expA;
+        sigZ = UINT64_C( 0x4000000000000000 ) + sigA + sigB;
+    } else {
+        if ( expDiff < 0 ) {
+            if ( expB == 0x7FF ) {
+                if ( sigB ) goto propagateNaN;
+                uiZ = packToF64UI( signZ, 0x7FF, 0 );
+                goto uiZ;
+            }
+            expZ = expB;
+            sigA += expA ? UINT64_C( 0x2000000000000000 ) : sigA;
+            sigA = softfloat_shift64RightJam( sigA, - expDiff );
+        } else {
+            if ( expA == 0x7FF ) {
+                if ( sigA ) goto propagateNaN;
+                uiZ = uiA;
+                goto uiZ;
+            }
+            expZ = expA;
+            sigB += expB ? UINT64_C( 0x2000000000000000 ) : sigB;
+            sigB = softfloat_shift64RightJam( sigB, expDiff );
+        }
+        sigZ = UINT64_C( 0x2000000000000000 ) + sigA + sigB;
+        if ( sigZ < UINT64_C( 0x4000000000000000 ) ) {
+            --expZ;
+            sigZ <<= 1;
+        }
+    }
+    return softfloat_roundPackToF64( signZ, expZ, sigZ );
+ propagateNaN:
+    uiZ = softfloat_propagateNaNF64UI( uiA, uiB );
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
diff --git a/softfloat/s_countLeadingZeros32.c b/softfloat/s_countLeadingZeros32.c
new file mode 100755
index 0000000..0bd17e1
--- /dev/null
+++ b/softfloat/s_countLeadingZeros32.c
@@ -0,0 +1,22 @@
+
+#include <stdint.h>
+#include "primitives.h"
+
+int softfloat_countLeadingZeros32( uint32_t a )
+{
+    int count;
+
+    count = 0;
+    if ( a < 0x10000 ) {
+        count = 16;
+        a <<= 16;
+    }
+    if ( a < 0x1000000 ) {
+        count += 8;
+        a <<= 8;
+    }
+    count += softfloat_countLeadingZeros8[ a>>24 ];
+    return count;
+
+}
+
diff --git a/softfloat/s_countLeadingZeros64.c b/softfloat/s_countLeadingZeros64.c
new file mode 100755
index 0000000..79f4280
--- /dev/null
+++ b/softfloat/s_countLeadingZeros64.c
@@ -0,0 +1,32 @@
+
+#include <stdint.h>
+#include "primitives.h"
+#include "platform.h"
+
+int softfloat_countLeadingZeros64( uint64_t a )
+{
+    int count;
+    uint32_t a32;
+
+    count = 32;
+    a32 = a;
+    if ( UINT64_C( 0x100000000 ) <= a ) {
+        count = 0;
+        a32 = a>>32;
+    }
+    /*------------------------------------------------------------------------
+    | From here, result is current count + count leading zeros of `a32'.
+    *------------------------------------------------------------------------*/
+    if ( a32 < 0x10000 ) {
+        count += 16;
+        a32 <<= 16;
+    }
+    if ( a32 < 0x1000000 ) {
+        count += 8;
+        a32 <<= 8;
+    }
+    count += softfloat_countLeadingZeros8[ a32>>24 ];
+    return count;
+
+}
+
diff --git a/softfloat/s_countLeadingZeros8.c b/softfloat/s_countLeadingZeros8.c
new file mode 100755
index 0000000..4eca7e9
--- /dev/null
+++ b/softfloat/s_countLeadingZeros8.c
@@ -0,0 +1,24 @@
+
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+
+const uint8_t softfloat_countLeadingZeros8[ 256 ] = {
+    8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,
+    3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
diff --git a/softfloat/s_eq128.c b/softfloat/s_eq128.c
new file mode 100755
index 0000000..7261dc4
--- /dev/null
+++ b/softfloat/s_eq128.c
@@ -0,0 +1,13 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+
+bool softfloat_eq128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )
+{
+
+    return ( a64 == b64 ) && ( a0 == b0 );
+
+}
+
diff --git a/softfloat/s_estimateDiv128To64.c b/softfloat/s_estimateDiv128To64.c
new file mode 100755
index 0000000..f8610a2
--- /dev/null
+++ b/softfloat/s_estimateDiv128To64.c
@@ -0,0 +1,28 @@
+
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+
+uint64_t softfloat_estimateDiv128To64( uint64_t a64, uint64_t a0, uint64_t b )
+{
+    uint32_t b32;
+    uint64_t z;
+    struct uint128 term, rem;
+    uint64_t rem32;
+
+    if ( b <= a64 ) return UINT64_C( 0xFFFFFFFFFFFFFFFF );
+    b32 = b>>32;
+    z = ( (uint64_t) b32<<32 <= a64 ) ? UINT64_C( 0xFFFFFFFF00000000 )
+            : ( a64 / b32 )<<32;
+    term = softfloat_mul64To128( b, z );
+    rem = softfloat_sub128( a64, a0, term.v64, term.v0 );
+    while ( UINT64_C( 0x8000000000000000 ) <= rem.v64 ) {
+        z -= UINT64_C( 0x100000000 );
+        rem = softfloat_add128( rem.v64, rem.v0, b32, (uint64_t) ( b<<32 ) );
+    }
+    rem32 = ( rem.v64<<32 ) | ( rem.v0>>32 );
+    z |= ( (uint64_t) b32<<32 <= rem32 ) ? 0xFFFFFFFF : rem32 / b32;
+    return z;
+
+}
+
diff --git a/softfloat/s_estimateSqrt32.c b/softfloat/s_estimateSqrt32.c
new file mode 100755
index 0000000..e22a9dc
--- /dev/null
+++ b/softfloat/s_estimateSqrt32.c
@@ -0,0 +1,37 @@
+
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+
+uint32_t softfloat_estimateSqrt32( unsigned int expA, uint32_t a )
+{
+    static const uint16_t sqrtOddAdjustments[] = {
+        0x0004, 0x0022, 0x005D, 0x00B1, 0x011D, 0x019F, 0x0236, 0x02E0,
+        0x039C, 0x0468, 0x0545, 0x0631, 0x072B, 0x0832, 0x0946, 0x0A67
+    };
+    static const uint16_t sqrtEvenAdjustments[] = {
+        0x0A2D, 0x08AF, 0x075A, 0x0629, 0x051A, 0x0429, 0x0356, 0x029E,
+        0x0200, 0x0179, 0x0109, 0x00AF, 0x0068, 0x0034, 0x0012, 0x0002
+    };
+    int index;
+    uint32_t z;
+    union { uint32_t ui; int32_t i; } u32;
+
+    index = ( a>>27 ) & 15;
+    if ( expA & 1 ) {
+        z = 0x4000 + ( a>>17 ) - sqrtOddAdjustments[ index ];
+        z = ( ( a / z )<<14 ) + ( z<<15 );
+        a >>= 1;
+    } else {
+        z = 0x8000 + ( a>>17 ) - sqrtEvenAdjustments[ index ];
+        z = a / z + z;
+        z = ( 0x20000 <= z ) ? 0xFFFF8000 : z<<15;
+        if ( z <= a ) {
+            u32.ui = a;
+            return u32.i>>1;
+        }
+    }
+    return (uint32_t) ( ( (uint64_t) a<<31 ) / z ) + ( z>>1 );
+
+}
+
diff --git a/softfloat/s_le128.c b/softfloat/s_le128.c
new file mode 100755
index 0000000..83b1d7f
--- /dev/null
+++ b/softfloat/s_le128.c
@@ -0,0 +1,13 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+bool softfloat_le128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )

+{

+

+    return ( a64 < b64 ) || ( ( a64 == b64 ) && ( a0 <= b0 ) );

+

+}

+

diff --git a/softfloat/s_lt128.c b/softfloat/s_lt128.c
new file mode 100755
index 0000000..33a3df4
--- /dev/null
+++ b/softfloat/s_lt128.c
@@ -0,0 +1,13 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+bool softfloat_lt128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )

+{

+

+    return ( a64 < b64 ) || ( ( a64 == b64 ) && ( a0 < b0 ) );

+

+}

+

diff --git a/softfloat/s_mul128By64To192.c b/softfloat/s_mul128By64To192.c
new file mode 100755
index 0000000..dfa8825
--- /dev/null
+++ b/softfloat/s_mul128By64To192.c
@@ -0,0 +1,20 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint192

+ softfloat_mul128By64To192( uint64_t a64, uint64_t a0, uint64_t b )

+{

+    struct uint128 p0, p64;

+    struct uint192 z;

+

+    p0 = softfloat_mul64To128( a0, b );

+    z.v0 = p0.v0;

+    p64 = softfloat_mul64To128( a64, b );

+    z.v64 = p64.v0 + p0.v64;

+    z.v128 = p64.v64 + ( z.v64 < p64.v0 );

+    return z;

+

+}

+

diff --git a/softfloat/s_mul128To256.c b/softfloat/s_mul128To256.c
new file mode 100755
index 0000000..a96cd94
--- /dev/null
+++ b/softfloat/s_mul128To256.c
@@ -0,0 +1,28 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint256

+ softfloat_mul128To256( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )

+{

+    struct uint128 p0, p64, p128;

+    struct uint256 z;

+

+    p0 = softfloat_mul64To128( a0, b0 );

+    z.v0 = p0.v0;

+    p64 = softfloat_mul64To128( a64, b0 );

+    z.v64 = p64.v0 + p0.v64;

+    z.v128 = p64.v64 + ( z.v64 < p64.v0 );

+    p128 = softfloat_mul64To128( a64, b64 );

+    z.v128 += p128.v0;

+    z.v192 = p128.v64 + ( z.v128 < p128.v0 );

+    p64 = softfloat_mul64To128( a0, b64 );

+    z.v64 += p64.v0;

+    p64.v64 += ( z.v64 < p64.v0 );

+    z.v128 += p64.v64;

+    z.v192 += ( z.v128 < p64.v64 );

+    return z;

+

+}

+

diff --git a/softfloat/s_mul64To128.c b/softfloat/s_mul64To128.c
new file mode 100755
index 0000000..c17780b
--- /dev/null
+++ b/softfloat/s_mul64To128.c
@@ -0,0 +1,28 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint128 softfloat_mul64To128( uint64_t a, uint64_t b )

+{

+    uint32_t a32, a0, b32, b0;

+    struct uint128 z;

+    uint64_t mid1, mid2, mid;

+

+    a32 = a>>32;

+    a0 = a;

+    b32 = b>>32;

+    b0 = b;

+    z.v0 = (uint64_t) a0 * b0;

+    mid1 = (uint64_t) a32 * b0;

+    mid2 = (uint64_t) a0 * b32;

+    z.v64 = (uint64_t) a32 * b32;

+    mid = mid1 + mid2;

+    z.v64 += ( (uint64_t) ( mid < mid1 ) )<<32 | mid>>32;

+    mid <<= 32;

+    z.v0 += mid;

+    z.v64 += ( z.v0 < mid );

+    return z;

+

+}

+

diff --git a/softfloat/s_mulAddF32.c b/softfloat/s_mulAddF32.c
new file mode 100755
index 0000000..e55a0ba
--- /dev/null
+++ b/softfloat/s_mulAddF32.c
@@ -0,0 +1,171 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+float32_t

+ softfloat_mulAddF32(

+     int op, uint_fast32_t uiA, uint_fast32_t uiB, uint_fast32_t uiC )

+{

+    bool signA;

+    int_fast16_t expA;

+    uint_fast32_t sigA;

+    bool signB;

+    int_fast16_t expB;

+    uint_fast32_t sigB;

+    bool signC;

+    int_fast16_t expC;

+    uint_fast32_t sigC;

+    bool signProd;

+    uint_fast32_t magBits, uiZ;

+    struct exp16_sig32 normExpSig;

+    int_fast16_t expProd;

+    uint_fast64_t sigProd;

+    bool signZ;

+    int_fast16_t expZ;

+    uint_fast32_t sigZ;

+    int_fast16_t expDiff;

+    uint_fast64_t sigZ64, sigC64;

+    int shiftCount;

+    union ui32_f32 uZ;

+

+    signA = signF32UI( uiA );

+    expA = expF32UI( uiA );

+    sigA = fracF32UI( uiA );

+    signB = signF32UI( uiB );

+    expB = expF32UI( uiB );

+    sigB = fracF32UI( uiB );

+    signC = signF32UI( uiC ) ^ ( op == softfloat_mulAdd_subC );

+    expC = expF32UI( uiC );

+    sigC = fracF32UI( uiC );

+    signProd = signA ^ signB ^ ( op == softfloat_mulAdd_subProd );

+    if ( expA == 0xFF ) {

+        if ( sigA || ( ( expB == 0xFF ) && sigB ) ) goto propagateNaN_ABC;

+        magBits = expB | sigB;

+        goto infProdArg;

+    }

+    if ( expB == 0xFF ) {

+        if ( sigB ) goto propagateNaN_ABC;

+        magBits = expA | sigA;

+        goto infProdArg;

+    }

+    if ( expC == 0xFF ) {

+        if ( sigC ) {

+            uiZ = 0;

+            goto propagateNaN_ZC;

+        }

+        uiZ = uiC;

+        goto uiZ;

+    }

+    if ( ! expA ) {

+        if ( ! sigA ) goto zeroProd;

+        normExpSig = softfloat_normSubnormalF32Sig( sigA );

+        expA = normExpSig.exp;

+        sigA = normExpSig.sig;

+    }

+    if ( ! expB ) {

+        if ( ! sigB ) goto zeroProd;

+        normExpSig = softfloat_normSubnormalF32Sig( sigB );

+        expB = normExpSig.exp;

+        sigB = normExpSig.sig;

+    }

+    expProd = expA + expB - 0x7E;

+    sigA = ( sigA | 0x00800000 )<<7;

+    sigB = ( sigB | 0x00800000 )<<7;

+    sigProd = (uint_fast64_t) sigA * sigB;

+    if ( sigProd < UINT64_C( 0x2000000000000000 ) ) {

+        --expProd;

+        sigProd <<= 1;

+    }

+    signZ = signProd;

+    if ( ! expC ) {

+        if ( ! sigC ) {

+            expZ = expProd - 1;

+            sigZ = softfloat_shortShift64RightJam( sigProd, 31 );

+            goto roundPack;

+        }

+        normExpSig = softfloat_normSubnormalF32Sig( sigC );

+        expC = normExpSig.exp;

+        sigC = normExpSig.sig;

+    }

+    sigC = ( sigC | 0x00800000 )<<6;

+    expDiff = expProd - expC;

+    if ( signProd == signC ) {

+        if ( expDiff <= 0 ) {

+            expZ = expC;

+            sigZ = sigC + softfloat_shift64RightJam( sigProd, 32 - expDiff );

+        } else {

+            expZ = expProd;

+            sigZ64 =

+                sigProd

+                    + softfloat_shift64RightJam(

+                          (uint_fast64_t) sigC<<32, expDiff );

+            sigZ = softfloat_shortShift64RightJam( sigZ64, 32 );

+        }

+        if ( sigZ < 0x40000000 ) {

+            --expZ;

+            sigZ <<= 1;

+        }

+    } else {

+/*** OPTIMIZE BETTER? ***/

+        sigC64 = (uint_fast64_t) sigC<<32;

+        if ( expDiff < 0 ) {

+            signZ = signC;

+            expZ = expC;

+            sigZ64 = sigC64 - softfloat_shift64RightJam( sigProd, - expDiff );

+        } else if ( ! expDiff ) {

+            expZ = expProd;

+            sigZ64 = sigProd - sigC64;

+            if ( ! sigZ64 ) goto completeCancellation;

+            if ( sigZ64 & UINT64_C( 0x8000000000000000 ) ) {

+                signZ ^= 1;

+                sigZ64 = - sigZ64;

+            }

+        } else {

+            expZ = expProd;

+            sigZ64 = sigProd - softfloat_shift64RightJam( sigC64, expDiff );

+        }

+        shiftCount = softfloat_countLeadingZeros64( sigZ64 ) - 1;

+        expZ -= shiftCount;

+        shiftCount -= 32;

+        if ( shiftCount < 0 ) {

+            sigZ = softfloat_shortShift64RightJam( sigZ64, - shiftCount );

+        } else {

+            sigZ = (uint_fast32_t) sigZ64<<shiftCount;

+        }

+    }

+ roundPack:

+    return softfloat_roundPackToF32( signZ, expZ, sigZ );

+ propagateNaN_ABC:

+    uiZ = softfloat_propagateNaNF32UI( uiA, uiB );

+    goto propagateNaN_ZC;

+ infProdArg:

+    if ( magBits ) {

+        uiZ = packToF32UI( signProd, 0xFF, 0 );

+        if ( expC != 0xFF ) goto uiZ;

+        if ( sigC ) goto propagateNaN_ZC;

+        if ( signProd == signC ) goto uiZ;

+    }

+ invalid:

+    softfloat_raiseFlags( softfloat_flag_invalid );

+    uiZ = defaultNaNF32UI;

+ propagateNaN_ZC:

+    uiZ = softfloat_propagateNaNF32UI( uiZ, uiC );

+    goto uiZ;

+ zeroProd:

+    uiZ = uiC;

+    if ( ! ( expC | sigC ) && ( signProd != signC ) ) {

+ completeCancellation:

+        uiZ =

+            packToF32UI( softfloat_roundingMode == softfloat_round_min, 0, 0 );

+    }

+ uiZ:

+    uZ.ui = uiZ;

+    return uZ.f;

+

+}

+

diff --git a/softfloat/s_mulAddF64.c b/softfloat/s_mulAddF64.c
new file mode 100755
index 0000000..01ba3b4
--- /dev/null
+++ b/softfloat/s_mulAddF64.c
@@ -0,0 +1,188 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+float64_t

+ softfloat_mulAddF64(

+     int op, uint_fast64_t uiA, uint_fast64_t uiB, uint_fast64_t uiC )

+{

+    bool signA;

+    int_fast16_t expA;

+    uint_fast64_t sigA;

+    bool signB;

+    int_fast16_t expB;

+    uint_fast64_t sigB;

+    bool signC;

+    int_fast16_t expC;

+    uint_fast64_t sigC;

+    bool signProd;

+    uint_fast64_t magBits, uiZ;

+    struct exp16_sig64 normExpSig;

+    int_fast16_t expProd;

+    struct uint128 sigProd;

+    bool signZ;

+    int_fast16_t expZ;

+    uint_fast64_t sigZ;

+    int_fast16_t expDiff;

+    struct uint128 sigC128, sigZ128;

+    int shiftCount;

+    union ui64_f64 uZ;

+

+    signA = signF64UI( uiA );

+    expA = expF64UI( uiA );

+    sigA = fracF64UI( uiA );

+    signB = signF64UI( uiB );

+    expB = expF64UI( uiB );

+    sigB = fracF64UI( uiB );

+    signC = signF64UI( uiC ) ^ ( op == softfloat_mulAdd_subC );

+    expC = expF64UI( uiC );

+    sigC = fracF64UI( uiC );

+    signProd = signA ^ signB ^ ( op == softfloat_mulAdd_subProd );

+    if ( expA == 0x7FF ) {

+        if ( sigA || ( ( expB == 0x7FF ) && sigB ) ) goto propagateNaN_ABC;

+        magBits = expB | sigB;

+        goto infProdArg;

+    }

+    if ( expB == 0x7FF ) {

+        if ( sigB ) goto propagateNaN_ABC;

+        magBits = expA | sigA;

+        goto infProdArg;

+    }

+    if ( expC == 0x7FF ) {

+        if ( sigC ) {

+            uiZ = 0;

+            goto propagateNaN_ZC;

+        }

+        uiZ = uiC;

+        goto uiZ;

+    }

+    if ( ! expA ) {

+        if ( ! sigA ) goto zeroProd;

+        normExpSig = softfloat_normSubnormalF64Sig( sigA );

+        expA = normExpSig.exp;

+        sigA = normExpSig.sig;

+    }

+    if ( ! expB ) {

+        if ( ! sigB ) goto zeroProd;

+        normExpSig = softfloat_normSubnormalF64Sig( sigB );

+        expB = normExpSig.exp;

+        sigB = normExpSig.sig;

+    }

+    expProd = expA + expB - 0x3FE;

+    sigA = ( sigA | UINT64_C( 0x0010000000000000 ) )<<10;

+    sigB = ( sigB | UINT64_C( 0x0010000000000000 ) )<<10;

+    sigProd = softfloat_mul64To128( sigA, sigB );

+    if ( sigProd.v64 < UINT64_C( 0x2000000000000000 ) ) {

+        --expProd;

+        sigProd = softfloat_shortShift128Left( sigProd.v64, sigProd.v0, 1 );

+    }

+    signZ = signProd;

+    if ( ! expC ) {

+        if ( ! sigC ) {

+            expZ = expProd - 1;

+            sigZ = sigProd.v64<<1 | ( sigProd.v0 != 0 );

+            goto roundPack;

+        }

+        normExpSig = softfloat_normSubnormalF64Sig( sigC );

+        expC = normExpSig.exp;

+        sigC = normExpSig.sig;

+    }

+    sigC = ( sigC | UINT64_C( 0x0010000000000000 ) )<<9;

+    expDiff = expProd - expC;

+    if ( signProd == signC ) {

+        if ( expDiff <= 0 ) {

+            expZ = expC;

+            if ( expDiff ) {

+                sigProd.v64 =

+                    softfloat_shift64RightJam( sigProd.v64, - expDiff );

+            }

+            sigZ = ( sigC + sigProd.v64 ) | ( sigProd.v0 != 0 );

+        } else {

+            expZ = expProd;

+            sigC128 = softfloat_shift128RightJam( sigC, 0, expDiff );

+            sigZ128 =

+                softfloat_add128(

+                    sigProd.v64, sigProd.v0, sigC128.v64, sigC128.v0 );

+            sigZ = sigZ128.v64 | ( sigZ128.v0 != 0 );

+        }

+        if ( sigZ < UINT64_C( 0x4000000000000000 ) ) {

+            --expZ;

+            sigZ <<= 1;

+        }

+    } else {

+/*** OPTIMIZE BETTER? ***/

+        if ( expDiff < 0 ) {

+            signZ = signC;

+            expZ = expC;

+            sigProd =

+                softfloat_shift128RightJam(

+                    sigProd.v64, sigProd.v0, - expDiff );

+            sigZ128 = softfloat_sub128( sigC, 0, sigProd.v64, sigProd.v0 );

+        } else if ( ! expDiff ) {

+            expZ = expProd;

+            sigZ128 = softfloat_sub128( sigProd.v64, sigProd.v0, sigC, 0 );

+            if ( ! ( sigZ128.v64 | sigZ128.v0 ) ) goto completeCancellation;

+            if ( sigZ128.v64 & UINT64_C( 0x8000000000000000 ) ) {

+                signZ ^= 1;

+                sigZ128 = softfloat_sub128( 0, 0, sigZ128.v64, sigZ128.v0 );

+            }

+        } else {

+            expZ = expProd;

+            sigC128 = softfloat_shift128RightJam( sigC, 0, expDiff );

+            sigZ128 =

+                softfloat_sub128(

+                    sigProd.v64, sigProd.v0, sigC128.v64, sigC128.v0 );

+        }

+        if ( ! sigZ128.v64 ) {

+            expZ -= 64;

+            sigZ128.v64 = sigZ128.v0;

+            sigZ128.v0 = 0;

+        }

+        shiftCount = softfloat_countLeadingZeros64( sigZ128.v64 ) - 1;

+        expZ -= shiftCount;

+        if ( shiftCount < 0 ) {

+            sigZ = softfloat_shortShift64RightJam( sigZ128.v64, - shiftCount );

+        } else {

+            sigZ128 =

+                softfloat_shortShift128Left(

+                    sigZ128.v64, sigZ128.v0, shiftCount );

+            sigZ = sigZ128.v64;

+        }

+        sigZ |= ( sigZ128.v0 != 0 );

+    }

+ roundPack:

+    return softfloat_roundPackToF64( signZ, expZ, sigZ );

+ propagateNaN_ABC:

+    uiZ = softfloat_propagateNaNF64UI( uiA, uiB );

+    goto propagateNaN_ZC;

+ infProdArg:

+    if ( magBits ) {

+        uiZ = packToF64UI( signProd, 0x7FF, 0 );

+        if ( expC != 0x7FF ) goto uiZ;

+        if ( sigC ) goto propagateNaN_ZC;

+        if ( signProd == signC ) goto uiZ;

+    }

+ invalid:

+    softfloat_raiseFlags( softfloat_flag_invalid );

+    uiZ = defaultNaNF64UI;

+ propagateNaN_ZC:

+    uiZ = softfloat_propagateNaNF64UI( uiZ, uiC );

+    goto uiZ;

+ zeroProd:

+    uiZ = uiC;

+    if ( ! ( expC | sigC ) && ( signProd != signC ) ) {

+ completeCancellation:

+        uiZ =

+            packToF64UI( softfloat_roundingMode == softfloat_round_min, 0, 0 );

+    }

+ uiZ:

+    uZ.ui = uiZ;

+    return uZ.f;

+

+}

+

diff --git a/softfloat/s_normRoundPackToF32.c b/softfloat/s_normRoundPackToF32.c
new file mode 100755
index 0000000..2e6f4b0
--- /dev/null
+++ b/softfloat/s_normRoundPackToF32.c
@@ -0,0 +1,24 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+

+float32_t

+ softfloat_normRoundPackToF32( bool sign, int_fast16_t exp, uint_fast32_t sig )

+{

+    int shiftCount;

+    union ui32_f32 uZ;

+

+    shiftCount = softfloat_countLeadingZeros32( sig ) - 1;

+    exp -= shiftCount;

+    if ( ( 7 <= shiftCount ) && ( (uint16_t) exp < 0xFD ) ) {

+        uZ.ui = packToF32UI( sign, sig ? exp : 0, sig<<( shiftCount - 7 ) );

+        return uZ.f;

+    } else {

+        return softfloat_roundPackToF32( sign, exp, sig<<shiftCount );

+    }

+

+}

+

diff --git a/softfloat/s_normRoundPackToF64.c b/softfloat/s_normRoundPackToF64.c
new file mode 100755
index 0000000..64dced4
--- /dev/null
+++ b/softfloat/s_normRoundPackToF64.c
@@ -0,0 +1,24 @@
+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+

+float64_t

+ softfloat_normRoundPackToF64( bool sign, int_fast16_t exp, uint_fast64_t sig )

+{

+    int shiftCount;

+    union ui64_f64 uZ;

+

+    shiftCount = softfloat_countLeadingZeros64( sig ) - 1;

+    exp -= shiftCount;

+    if ( ( 10 <= shiftCount ) && ( (uint16_t) exp < 0x7FD ) ) {

+        uZ.ui = packToF64UI( sign, sig ? exp : 0, sig<<( shiftCount - 10 ) );

+        return uZ.f;

+    } else {

+        return softfloat_roundPackToF64( sign, exp, sig<<shiftCount );

+    }

+

+}

+

diff --git a/softfloat/s_normSubnormalF32Sig.c b/softfloat/s_normSubnormalF32Sig.c
new file mode 100755
index 0000000..b98eb86
--- /dev/null
+++ b/softfloat/s_normSubnormalF32Sig.c
@@ -0,0 +1,18 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+

+struct exp16_sig32 softfloat_normSubnormalF32Sig( uint_fast32_t sig )

+{

+    int shiftCount;

+    struct exp16_sig32 z;

+

+    shiftCount = softfloat_countLeadingZeros32( sig ) - 8;

+    z.exp = 1 - shiftCount;

+    z.sig = sig<<shiftCount;

+    return z;

+

+}

+

diff --git a/softfloat/s_normSubnormalF64Sig.c b/softfloat/s_normSubnormalF64Sig.c
new file mode 100755
index 0000000..45a7c9e
--- /dev/null
+++ b/softfloat/s_normSubnormalF64Sig.c
@@ -0,0 +1,18 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+

+struct exp16_sig64 softfloat_normSubnormalF64Sig( uint_fast64_t sig )

+{

+    int shiftCount;

+    struct exp16_sig64 z;

+

+    shiftCount = softfloat_countLeadingZeros64( sig ) - 11;

+    z.exp = 1 - shiftCount;

+    z.sig = sig<<shiftCount;

+    return z;

+

+}

+

diff --git a/softfloat/s_roundPackToF32.c b/softfloat/s_roundPackToF32.c
new file mode 100755
index 0000000..11764f1
--- /dev/null
+++ b/softfloat/s_roundPackToF32.c
@@ -0,0 +1,65 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+#include "internals.h"
+#include "softfloat.h"
+
+float32_t
+ softfloat_roundPackToF32( bool sign, int_fast16_t exp, uint_fast32_t sig )
+{
+    int roundingMode;
+    bool roundNearestEven;
+    int roundIncrement, roundBits;
+    bool isTiny;
+    uint_fast32_t uiZ;
+    union ui32_f32 uZ;
+
+    roundingMode = softfloat_roundingMode;
+    roundNearestEven = ( roundingMode == softfloat_round_nearest_even );
+    roundIncrement = 0x40;
+    if (
+           ! roundNearestEven
+        && ( roundingMode != softfloat_round_nearest_maxMag )
+    ) {
+        roundIncrement =
+               ( roundingMode == softfloat_round_minMag )
+            || ( roundingMode
+                     == ( sign ? softfloat_round_max : softfloat_round_min ) )
+                ? 0
+                : 0x7F;
+    }
+    roundBits = sig & 0x7F;
+    if ( 0xFD <= (uint16_t) exp ) {
+        if ( exp < 0 ) {
+            isTiny =
+                   ( softfloat_detectTininess
+                         == softfloat_tininess_beforeRounding )
+                || ( exp < -1 )
+                || ( sig + roundIncrement < 0x80000000 );
+            sig = softfloat_shift32RightJam( sig, - exp );
+            exp = 0;
+            roundBits = sig & 0x7F;
+            if ( isTiny && roundBits ) {
+                softfloat_raiseFlags( softfloat_flag_underflow );
+            }
+        } else if (
+            ( 0xFD < exp ) || ( 0x80000000 <= sig + roundIncrement )
+        ) {
+            softfloat_raiseFlags(
+                softfloat_flag_overflow | softfloat_flag_inexact );
+            uiZ = packToF32UI( sign, 0xFF, 0 ) - ! roundIncrement;
+            goto uiZ;
+        }
+    }
+    if ( roundBits ) softfloat_exceptionFlags |= softfloat_flag_inexact;
+    sig = ( sig + roundIncrement )>>7;
+    sig &= ~ ( ! ( roundBits ^ 0x40 ) & roundNearestEven );
+    uiZ = packToF32UI( sign, sig ? exp : 0, sig );
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
diff --git a/softfloat/s_roundPackToF64.c b/softfloat/s_roundPackToF64.c
new file mode 100755
index 0000000..fb0ef1d
--- /dev/null
+++ b/softfloat/s_roundPackToF64.c
@@ -0,0 +1,66 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+#include "internals.h"
+#include "softfloat.h"
+
+float64_t
+ softfloat_roundPackToF64( bool sign, int_fast16_t exp, uint_fast64_t sig )
+{
+    int roundingMode;
+    bool roundNearestEven;
+    int roundIncrement, roundBits;
+    bool isTiny;
+    uint_fast64_t uiZ;
+    union ui64_f64 uZ;
+
+    roundingMode = softfloat_roundingMode;
+    roundNearestEven = ( roundingMode == softfloat_round_nearest_even );
+    roundIncrement = 0x200;
+    if (
+           ! roundNearestEven
+        && ( roundingMode != softfloat_round_nearest_maxMag )
+    ) {
+        roundIncrement =
+               ( roundingMode == softfloat_round_minMag )
+            || ( roundingMode
+                     == ( sign ? softfloat_round_max : softfloat_round_min ) )
+                ? 0
+                : 0x3FF;
+    }
+    roundBits = sig & 0x3FF;
+    if ( 0x7FD <= (uint16_t) exp ) {
+        if ( exp < 0 ) {
+            isTiny =
+                   ( softfloat_detectTininess
+                         == softfloat_tininess_beforeRounding )
+                || ( exp < -1 )
+                || ( sig + roundIncrement < UINT64_C( 0x8000000000000000 ) );
+            sig = softfloat_shift64RightJam( sig, - exp );
+            exp = 0;
+            roundBits = sig & 0x3FF;
+            if ( isTiny && roundBits ) {
+                softfloat_raiseFlags( softfloat_flag_underflow );
+            }
+        } else if (
+            ( 0x7FD < exp )
+                || ( UINT64_C( 0x8000000000000000 ) <= sig + roundIncrement )
+        ) {
+            softfloat_raiseFlags(
+                softfloat_flag_overflow | softfloat_flag_inexact );
+            uiZ = packToF64UI( sign, 0x7FF, 0 ) - ! roundIncrement;
+            goto uiZ;
+        }
+    }
+    if ( roundBits ) softfloat_exceptionFlags |= softfloat_flag_inexact;
+    sig = ( sig + roundIncrement )>>10;
+    sig &= ~ ( ! ( roundBits ^ 0x200 ) & roundNearestEven );
+    uiZ = packToF64UI( sign, sig ? exp : 0, sig );
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
diff --git a/softfloat/s_roundPackToI32.c b/softfloat/s_roundPackToI32.c
new file mode 100755
index 0000000..1c91497
--- /dev/null
+++ b/softfloat/s_roundPackToI32.c
@@ -0,0 +1,48 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+int_fast32_t
+ softfloat_roundPackToI32(
+     bool sign, uint_fast64_t sig, int_fast8_t roundingMode, bool exact )
+{
+    bool roundNearestEven;
+    int roundIncrement, roundBits;
+    uint_fast32_t sig32;
+    union { uint32_t ui; int32_t i; } uZ;
+    int_fast32_t z;
+
+    roundNearestEven = ( roundingMode == softfloat_round_nearest_even );
+    roundIncrement = 0x40;
+    if (
+           ! roundNearestEven
+        && ( roundingMode != softfloat_round_nearest_maxMag )
+    ) {
+        roundIncrement =
+               ( roundingMode == softfloat_round_minMag )
+            || ( roundingMode
+                     == ( sign ? softfloat_round_max : softfloat_round_min ) )
+                ? 0
+                : 0x7F;
+    }
+    roundBits = sig & 0x7F;
+    sig += roundIncrement;
+    if ( sig & UINT64_C( 0xFFFFFF8000000000 ) ) goto invalid;
+    sig32 = sig>>7;
+    sig32 &= ~ ( ! ( roundBits ^ 0x40 ) & roundNearestEven );
+    uZ.ui = sign ? - sig32 : sig32;
+    z = uZ.i;
+    if ( z && ( ( z < 0 ) ^ sign ) ) goto invalid;
+    if ( exact && roundBits ) {
+        softfloat_exceptionFlags |= softfloat_flag_inexact;
+    }
+    return z;
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    return sign ? -0x7FFFFFFF - 1 : 0x7FFFFFFF;
+
+}
+
diff --git a/softfloat/s_roundPackToI64.c b/softfloat/s_roundPackToI64.c
new file mode 100755
index 0000000..b2f5d63
--- /dev/null
+++ b/softfloat/s_roundPackToI64.c
@@ -0,0 +1,52 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+int_fast64_t
+ softfloat_roundPackToI64(
+     bool sign,
+     uint_fast64_t sig64,
+     uint_fast64_t sig0,
+     int_fast8_t roundingMode,
+     bool exact
+ )
+{
+    bool roundNearestEven, increment;
+    union { uint64_t ui; int64_t i; } uZ;
+    int_fast64_t z;
+
+    roundNearestEven = ( roundingMode == softfloat_round_nearest_even );
+    increment = ( UINT64_C( 0x8000000000000000 ) <= sig0 );
+    if (
+           ! roundNearestEven
+        && ( roundingMode != softfloat_round_nearest_maxMag )
+    ) {
+        increment =
+               ( roundingMode != softfloat_round_minMag )
+            && ( roundingMode
+                     == ( sign ? softfloat_round_min : softfloat_round_max ) )
+            && sig0;
+    }
+    if ( increment ) {
+        ++sig64;
+        if ( ! sig64 ) goto invalid;
+        sig64 &=
+            ~ ( ! ( sig0 & UINT64_C( 0x7FFFFFFFFFFFFFFF ) )
+                    & roundNearestEven );
+    }
+    uZ.ui = sign ? - sig64 : sig64;
+    z = uZ.i;
+    if ( z && ( ( z < 0 ) ^ sign ) ) goto invalid;
+    if ( exact && sig0 ) softfloat_exceptionFlags |= softfloat_flag_inexact;
+    return z;
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    return
+        sign ? - INT64_C( 0x7FFFFFFFFFFFFFFF ) - 1
+            : INT64_C( 0x7FFFFFFFFFFFFFFF );
+
+}
+
diff --git a/softfloat/s_roundPackToUI32.c b/softfloat/s_roundPackToUI32.c
new file mode 100755
index 0000000..ab44ec7
--- /dev/null
+++ b/softfloat/s_roundPackToUI32.c
@@ -0,0 +1,44 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+uint_fast32_t
+ softfloat_roundPackToUI32(
+     bool sign, uint_fast64_t sig, int_fast8_t roundingMode, bool exact )
+{
+    bool roundNearestEven;
+    int roundIncrement, roundBits;
+    uint_fast32_t z;
+
+    roundNearestEven = ( roundingMode == softfloat_round_nearest_even );
+    roundIncrement = 0x40;
+    if (
+           ! roundNearestEven
+        && ( roundingMode != softfloat_round_nearest_maxMag )
+    ) {
+        roundIncrement =
+               ( roundingMode == softfloat_round_minMag )
+            || ( roundingMode
+                     == ( sign ? softfloat_round_max : softfloat_round_min ) )
+                ? 0
+                : 0x7F;
+    }
+    roundBits = sig & 0x7F;
+    sig += roundIncrement;
+    if ( sig & UINT64_C( 0xFFFFFF8000000000 ) ) goto invalid;
+    z = sig>>7;
+    z &= ~ ( ! ( roundBits ^ 0x40 ) & roundNearestEven );
+    if ( sign && z ) goto invalid;
+    if ( exact && roundBits ) {
+        softfloat_exceptionFlags |= softfloat_flag_inexact;
+    }
+    return z;
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    return 0xFFFFFFFF;
+
+}
+
diff --git a/softfloat/s_roundPackToUI64.c b/softfloat/s_roundPackToUI64.c
new file mode 100755
index 0000000..d42266f
--- /dev/null
+++ b/softfloat/s_roundPackToUI64.c
@@ -0,0 +1,46 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+uint_fast64_t
+ softfloat_roundPackToUI64(
+     bool sign,
+     uint_fast64_t sig64,
+     uint_fast64_t sig0,
+     int_fast8_t roundingMode,
+     bool exact
+ )
+{
+    bool roundNearestEven, increment;
+
+    roundNearestEven = ( roundingMode == softfloat_round_nearest_even );
+    increment = ( UINT64_C( 0x8000000000000000 ) <= sig0 );
+    if (
+           ! roundNearestEven
+        && ( roundingMode != softfloat_round_nearest_maxMag )
+    ) {
+        increment =
+               ( roundingMode != softfloat_round_minMag )
+            && ( roundingMode
+                     == ( sign ? softfloat_round_min : softfloat_round_max ) )
+            && sig0;
+    }
+    if ( increment ) {
+        ++sig64;
+        if ( ! sig64 ) goto invalid;
+        sig64 &=
+            ~ ( ! ( sig0 & UINT64_C( 0x7FFFFFFFFFFFFFFF ) )
+                    & roundNearestEven );
+    }
+    if ( sign && sig64 ) goto invalid;
+    if ( exact && sig0 ) softfloat_exceptionFlags |= softfloat_flag_inexact;
+    return sig64;
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    return UINT64_C( 0xFFFFFFFFFFFFFFFF );
+
+}
+
diff --git a/softfloat/s_shift128ExtraRightJam.c b/softfloat/s_shift128ExtraRightJam.c
new file mode 100755
index 0000000..6c57974
--- /dev/null
+++ b/softfloat/s_shift128ExtraRightJam.c
@@ -0,0 +1,38 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint128_extra

+ softfloat_shift128ExtraRightJam(

+     uint64_t a64, uint64_t a0, uint64_t extra, unsigned int count )

+{

+    unsigned int negCount;

+    struct uint128_extra z;

+

+    negCount = - count;

+    if ( count < 64 ) {

+        z.v64 = a64>>count;

+        z.v0 = a64<<( negCount & 63 ) | a0>>count;

+        z.extra = a0<<( negCount & 63 );

+    } else {

+        z.v64 = 0;

+        if ( count == 64 ) {

+            z.v0 = a64;

+            z.extra = a0;

+        } else {

+            extra |= a0;

+            if ( count < 128 ) {

+                z.v0 = a64>>( count & 63 );

+                z.extra = a64<<( negCount & 63 );

+            } else {

+                z.v0 = 0;

+                z.extra = ( count == 128 ) ? a64 : ( a64 != 0 );

+            }

+        }

+    }

+    z.extra |= ( extra != 0 );

+    return z;

+

+}

+

diff --git a/softfloat/s_shift128RightJam.c b/softfloat/s_shift128RightJam.c
new file mode 100755
index 0000000..5a4e188
--- /dev/null
+++ b/softfloat/s_shift128RightJam.c
@@ -0,0 +1,31 @@
+
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+
+struct uint128
+ softfloat_shift128RightJam( uint64_t a64, uint64_t a0, unsigned int count )
+{
+    unsigned int negCount;
+    struct uint128 z;
+
+    if ( count < 64 ) {
+        negCount = - count;
+        z.v64 = a64>>( count & 63 );
+        z.v0 =
+            a64<<( negCount & 63 ) | a0>>count
+                | ( (uint64_t) ( a0<<( negCount & 63 ) ) != 0 );
+    } else {
+        z.v64 = 0;
+        z.v0 =
+            ( count < 128 )
+                ? a64>>( count & 63 )
+                      | ( ( ( a64 & ( ( (uint64_t) 1<<( count & 63 ) ) - 1 ) )
+                                | a0 )
+                              != 0 )
+                : ( ( a64 | a0 ) != 0 );
+    }
+    return z;
+
+}
+
diff --git a/softfloat/s_shift32RightJam.c b/softfloat/s_shift32RightJam.c
new file mode 100755
index 0000000..b697a34
--- /dev/null
+++ b/softfloat/s_shift32RightJam.c
@@ -0,0 +1,15 @@
+
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+
+uint32_t softfloat_shift32RightJam( uint32_t a, unsigned int count )
+{
+
+    return
+        ( count < 32 )
+            ? a>>count | ( (uint32_t) ( a<<( ( - count ) & 31 ) ) != 0 )
+            : ( a != 0 );
+
+}
+
diff --git a/softfloat/s_shift64ExtraRightJam.c b/softfloat/s_shift64ExtraRightJam.c
new file mode 100755
index 0000000..167ea54
--- /dev/null
+++ b/softfloat/s_shift64ExtraRightJam.c
@@ -0,0 +1,23 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint64_extra

+ softfloat_shift64ExtraRightJam(

+     uint64_t a, uint64_t extra, unsigned int count )

+{

+    struct uint64_extra z;

+

+    if ( count < 64 ) {

+        z.v = a>>count;

+        z.extra = a<<( ( - count ) & 63 );

+    } else {

+        z.v = 0;

+        z.extra = ( count == 64 ) ? a : ( a != 0 );

+    }

+    z.extra |= ( extra != 0 );

+    return z;

+

+}

+

diff --git a/softfloat/s_shift64RightJam.c b/softfloat/s_shift64RightJam.c
new file mode 100755
index 0000000..ebebb61
--- /dev/null
+++ b/softfloat/s_shift64RightJam.c
@@ -0,0 +1,15 @@
+
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+
+uint64_t softfloat_shift64RightJam( uint64_t a, unsigned int count )
+{
+
+    return
+        ( count < 64 )
+            ? a>>count | ( (uint64_t) ( a<<( ( - count ) & 63 ) ) != 0 )
+            : ( a != 0 );
+
+}
+
diff --git a/softfloat/s_shortShift128ExtraRightJam.c b/softfloat/s_shortShift128ExtraRightJam.c
new file mode 100755
index 0000000..c772740
--- /dev/null
+++ b/softfloat/s_shortShift128ExtraRightJam.c
@@ -0,0 +1,20 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint128_extra

+ softfloat_shortShift128ExtraRightJam(

+     uint64_t a64, uint64_t a0, uint64_t extra, unsigned int count )

+{

+    unsigned int negCount;

+    struct uint128_extra z;

+

+    negCount = - count;

+    z.v64 = a64>>count;

+    z.v0 = a64<<( negCount & 63 ) | a0>>count;

+    z.extra = a0<<( negCount & 63 ) | ( extra != 0 );

+    return z;

+

+}

+

diff --git a/softfloat/s_shortShift128Left.c b/softfloat/s_shortShift128Left.c
new file mode 100755
index 0000000..9c29988
--- /dev/null
+++ b/softfloat/s_shortShift128Left.c
@@ -0,0 +1,16 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint128

+ softfloat_shortShift128Left( uint64_t a64, uint64_t a0, unsigned int count )

+{

+    struct uint128 z;

+

+    z.v64 = a64<<count | a0>>( ( - count ) & 63 );

+    z.v0 = a0<<count;

+    return z;

+

+}

+

diff --git a/softfloat/s_shortShift128Right.c b/softfloat/s_shortShift128Right.c
new file mode 100755
index 0000000..f7f4ce8
--- /dev/null
+++ b/softfloat/s_shortShift128Right.c
@@ -0,0 +1,16 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint128

+ softfloat_shortShift128Right( uint64_t a64, uint64_t a0, unsigned int count )

+{

+    struct uint128 z;

+

+    z.v64 = a64>>count;

+    z.v0 = a64<<( ( - count ) & 63 ) | a0>>count;

+    return z;

+

+}

+

diff --git a/softfloat/s_shortShift192Left.c b/softfloat/s_shortShift192Left.c
new file mode 100755
index 0000000..cf1e55d
--- /dev/null
+++ b/softfloat/s_shortShift192Left.c
@@ -0,0 +1,20 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint192

+ softfloat_shortShift192Left(

+     uint64_t a128, uint64_t a64, uint64_t a0, unsigned int count )

+{

+    unsigned int negCount;

+    struct uint192 z;

+

+    negCount = - count;

+    z.v128 = a128<<count | a64>>( negCount & 63 );

+    z.v64 = a64<<count | a0>>( negCount & 63 );

+    z.v0 = a0<<count;

+    return z;

+

+}

+

diff --git a/softfloat/s_shortShift32Right1Jam.c b/softfloat/s_shortShift32Right1Jam.c
new file mode 100755
index 0000000..db4c304
--- /dev/null
+++ b/softfloat/s_shortShift32Right1Jam.c
@@ -0,0 +1,12 @@
+
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+
+uint32_t softfloat_shortShift32Right1Jam( uint32_t a )
+{
+
+    return a>>1 | ( a & 1 );
+
+}
+
diff --git a/softfloat/s_shortShift64ExtraRightJam.c b/softfloat/s_shortShift64ExtraRightJam.c
new file mode 100755
index 0000000..b861c67
--- /dev/null
+++ b/softfloat/s_shortShift64ExtraRightJam.c
@@ -0,0 +1,17 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint64_extra

+ softfloat_shortShift64ExtraRightJam(

+     uint64_t a, uint64_t extra, unsigned int count )

+{

+    struct uint64_extra z;

+

+    z.v = a>>count;

+    z.extra = a<<( ( - count ) & 63 ) | ( extra != 0 );

+    return z;

+

+}

+

diff --git a/softfloat/s_shortShift64RightJam.c b/softfloat/s_shortShift64RightJam.c
new file mode 100755
index 0000000..0da6c93
--- /dev/null
+++ b/softfloat/s_shortShift64RightJam.c
@@ -0,0 +1,12 @@
+
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+
+uint64_t softfloat_shortShift64RightJam( uint64_t a, unsigned int count )
+{
+
+    return a>>count | ( ( a & ( ( (uint64_t) 1<<count ) - 1 ) ) != 0 );
+
+}
+
diff --git a/softfloat/s_sub128.c b/softfloat/s_sub128.c
new file mode 100755
index 0000000..0c4f181
--- /dev/null
+++ b/softfloat/s_sub128.c
@@ -0,0 +1,17 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint128

+ softfloat_sub128( uint64_t a64, uint64_t a0, uint64_t b64, uint64_t b0 )

+{

+    struct uint128 z;

+

+    z.v0 = a0 - b0;

+    z.v64 = a64 - b64;

+    z.v64 -= ( a0 < b0 );

+    return z;

+

+}

+

diff --git a/softfloat/s_sub192.c b/softfloat/s_sub192.c
new file mode 100755
index 0000000..96f21c9
--- /dev/null
+++ b/softfloat/s_sub192.c
@@ -0,0 +1,30 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+

+struct uint192

+ softfloat_sub192(

+     uint64_t a128,

+     uint64_t a64,

+     uint64_t a0,

+     uint64_t b128,

+     uint64_t b64,

+     uint64_t b0

+ )

+{

+    struct uint192 z;

+    unsigned int borrow64, borrow128;

+

+    z.v0 = a0 - b0;

+    borrow64 = ( a0 < b0 );

+    z.v64 = a64 - b64;

+    borrow128 = ( a64 < b64 );

+    z.v128 = a128 - b128;

+    borrow128 += ( z.v64 < borrow64 );

+    z.v64 -= borrow64;

+    z.v128 -= borrow128;

+    return z;

+

+}

+

diff --git a/softfloat/s_subMagsF32.c b/softfloat/s_subMagsF32.c
new file mode 100755
index 0000000..0c83b02
--- /dev/null
+++ b/softfloat/s_subMagsF32.c
@@ -0,0 +1,81 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+float32_t
+ softfloat_subMagsF32( uint_fast32_t uiA, uint_fast32_t uiB, bool signZ )
+{
+    int_fast16_t expA;
+    uint_fast32_t sigA;
+    int_fast16_t expB;
+    uint_fast32_t sigB;
+    int_fast16_t expDiff;
+    uint_fast32_t uiZ;
+    int_fast16_t expZ;
+    uint_fast32_t sigZ;
+    union ui32_f32 uZ;
+
+    expA = expF32UI( uiA );
+    sigA = fracF32UI( uiA );
+    expB = expF32UI( uiB );
+    sigB = fracF32UI( uiB );
+    expDiff = expA - expB;
+    sigA <<= 7;
+    sigB <<= 7;
+    if ( 0 < expDiff ) goto expABigger;
+    if ( expDiff < 0 ) goto expBBigger;
+    if ( expA == 0xFF ) {
+        if ( sigA | sigB ) goto propagateNaN;
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        uiZ = defaultNaNF32UI;
+        goto uiZ;
+    }
+    if ( ! expA ) {
+        expA = 1;
+        expB = 1;
+    }
+    if ( sigB < sigA ) goto aBigger;
+    if ( sigA < sigB ) goto bBigger;
+    uiZ = packToF32UI( softfloat_roundingMode == softfloat_round_min, 0, 0 );
+    goto uiZ;
+ expBBigger:
+    if ( expB == 0xFF ) {
+        if ( sigB ) goto propagateNaN;
+        uiZ = packToF32UI( signZ ^ 1, 0xFF, 0 );
+        goto uiZ;
+    }
+    sigA += expA ? 0x40000000 : sigA;
+    sigA = softfloat_shift32RightJam( sigA, - expDiff );
+    sigB |= 0x40000000;
+ bBigger:
+    signZ ^= 1;
+    expZ = expB;
+    sigZ = sigB - sigA;
+    goto normRoundPack;
+ expABigger:
+    if ( expA == 0xFF ) {
+        if ( sigA ) goto propagateNaN;
+        uiZ = uiA;
+        goto uiZ;
+    }
+    sigB += expB ? 0x40000000 : sigB;
+    sigB = softfloat_shift32RightJam( sigB, expDiff );
+    sigA |= 0x40000000;
+ aBigger:
+    expZ = expA;
+    sigZ = sigA - sigB;
+ normRoundPack:
+    return softfloat_normRoundPackToF32( signZ, expZ - 1, sigZ );
+ propagateNaN:
+    uiZ = softfloat_propagateNaNF32UI( uiA, uiB );
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
diff --git a/softfloat/s_subMagsF64.c b/softfloat/s_subMagsF64.c
new file mode 100755
index 0000000..45b81ba
--- /dev/null
+++ b/softfloat/s_subMagsF64.c
@@ -0,0 +1,81 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+float64_t
+ softfloat_subMagsF64( uint_fast64_t uiA, uint_fast64_t uiB, bool signZ )
+{
+    int_fast16_t expA;
+    uint_fast64_t sigA;
+    int_fast16_t expB;
+    uint_fast64_t sigB;
+    int_fast16_t expDiff;
+    uint_fast64_t uiZ;
+    int_fast16_t expZ;
+    uint_fast64_t sigZ;
+    union ui64_f64 uZ;
+
+    expA = expF64UI( uiA );
+    sigA = fracF64UI( uiA );
+    expB = expF64UI( uiB );
+    sigB = fracF64UI( uiB );
+    expDiff = expA - expB;
+    sigA <<= 10;
+    sigB <<= 10;
+    if ( 0 < expDiff ) goto expABigger;
+    if ( expDiff < 0 ) goto expBBigger;
+    if ( expA == 0x7FF ) {
+        if ( sigA | sigB ) goto propagateNaN;
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        uiZ = defaultNaNF64UI;
+        goto uiZ;
+    }
+    if ( ! expA ) {
+        expA = 1;
+        expB = 1;
+    }
+    if ( sigB < sigA ) goto aBigger;
+    if ( sigA < sigB ) goto bBigger;
+    uiZ = packToF64UI( softfloat_roundingMode == softfloat_round_min, 0, 0 );
+    goto uiZ;
+ expBBigger:
+    if ( expB == 0x7FF ) {
+        if ( sigB ) goto propagateNaN;
+        uiZ = packToF64UI( signZ ^ 1, 0x7FF, 0 );
+        goto uiZ;
+    }
+    sigA += expA ? UINT64_C( 0x4000000000000000 ) : sigA;
+    sigA = softfloat_shift64RightJam( sigA, - expDiff );
+    sigB |= UINT64_C( 0x4000000000000000 );
+ bBigger:
+    signZ ^= 1;
+    expZ = expB;
+    sigZ = sigB - sigA;
+    goto normRoundPack;
+ expABigger:
+    if ( expA == 0x7FF ) {
+        if ( sigA ) goto propagateNaN;
+        uiZ = uiA;
+        goto uiZ;
+    }
+    sigB += expB ? UINT64_C( 0x4000000000000000 ) : sigB;
+    sigB = softfloat_shift64RightJam( sigB, expDiff );
+    sigA |= UINT64_C( 0x4000000000000000 );
+ aBigger:
+    expZ = expA;
+    sigZ = sigA - sigB;
+ normRoundPack:
+    return softfloat_normRoundPackToF64( signZ, expZ - 1, sigZ );
+ propagateNaN:
+    uiZ = softfloat_propagateNaNF64UI( uiA, uiB );
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
diff --git a/softfloat/softfloat.ac b/softfloat/softfloat.ac
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/softfloat/softfloat.ac
diff --git a/softfloat/softfloat.h b/softfloat/softfloat.h
new file mode 100755
index 0000000..3eddeed
--- /dev/null
+++ b/softfloat/softfloat.h
@@ -0,0 +1,233 @@
+

+#ifndef softfloat_h

+#define softfloat_h

+

+#ifdef __cplusplus

+extern "C" {

+#endif

+

+/*** UPDATE COMMENTS. ***/

+

+/*============================================================================

+

+This C header file is part of the SoftFloat IEEE Floating-point Arithmetic

+Package, Release 2b.

+

+Written by John R. Hauser.  This work was made possible in part by the

+International Computer Science Institute, located at Suite 600, 1947 Center

+Street, Berkeley, California 94704.  Funding was partially provided by the

+National Science Foundation under grant MIP-9311980.  The original version

+of this code was written as part of a project to build a fixed-point vector

+processor in collaboration with the University of California at Berkeley,

+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information

+is available through the Web page `http://www.cs.berkeley.edu/~jhauser/

+arithmetic/SoftFloat.html'.

+

+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has

+been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES

+RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS

+AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,

+COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE

+EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE

+INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR

+OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.

+

+Derivative works are acceptable, even for commercial purposes, so long as

+(1) the source code for the derivative work includes prominent notice that

+the work is derivative, and (2) the source code includes prominent notice with

+these four paragraphs for those parts of this code that are retained.

+

+=============================================================================*/

+

+#include "softfloat_types.h"

+

+/*----------------------------------------------------------------------------

+| Software floating-point underflow tininess-detection mode.

+*----------------------------------------------------------------------------*/

+extern int_fast8_t softfloat_detectTininess;

+enum {

+    softfloat_tininess_beforeRounding = 0,

+    softfloat_tininess_afterRounding  = 1

+};

+

+/*----------------------------------------------------------------------------

+| Software floating-point rounding mode.

+*----------------------------------------------------------------------------*/

+extern int_fast8_t softfloat_roundingMode;

+enum {

+    softfloat_round_nearest_even   = 0,

+    softfloat_round_minMag         = 1,

+    softfloat_round_min            = 2,

+    softfloat_round_max            = 3,

+    softfloat_round_nearest_maxMag = 4

+};

+

+/*----------------------------------------------------------------------------

+| Software floating-point exception flags.

+*----------------------------------------------------------------------------*/

+extern int_fast8_t softfloat_exceptionFlags;

+enum {

+    softfloat_flag_inexact   =  1,

+    softfloat_flag_underflow =  2,

+    softfloat_flag_overflow  =  4,

+    softfloat_flag_infinity  =  8,

+    softfloat_flag_invalid   = 16

+};

+

+/*----------------------------------------------------------------------------

+| Routine to raise any or all of the software floating-point exception flags.

+*----------------------------------------------------------------------------*/

+void softfloat_raiseFlags( int_fast8_t );

+

+/*----------------------------------------------------------------------------

+| Integer-to-floating-point conversion routines.

+*----------------------------------------------------------------------------*/

+float32_t ui32_to_f32( uint_fast32_t );

+float64_t ui32_to_f64( uint_fast32_t );

+floatx80_t ui32_to_fx80( uint_fast32_t );

+float128_t ui32_to_f128( uint_fast32_t );

+float32_t ui64_to_f32( uint_fast64_t );

+float64_t ui64_to_f64( uint_fast64_t );

+floatx80_t ui64_to_fx80( uint_fast64_t );

+float128_t ui64_to_f128( uint_fast64_t );

+float32_t i32_to_f32( int_fast32_t );

+float64_t i32_to_f64( int_fast32_t );

+floatx80_t i32_to_fx80( int_fast32_t );

+float128_t i32_to_f128( int_fast32_t );

+float32_t i64_to_f32( int_fast64_t );

+float64_t i64_to_f64( int_fast64_t );

+floatx80_t i64_to_fx80( int_fast64_t );

+float128_t i64_to_f128( int_fast64_t );

+

+/*----------------------------------------------------------------------------

+| 32-bit (single-precision) floating-point operations.

+*----------------------------------------------------------------------------*/

+uint_fast32_t f32_to_ui32( float32_t, int_fast8_t, bool );

+uint_fast64_t f32_to_ui64( float32_t, int_fast8_t, bool );

+int_fast32_t f32_to_i32( float32_t, int_fast8_t, bool );

+int_fast64_t f32_to_i64( float32_t, int_fast8_t, bool );

+uint_fast32_t f32_to_ui32_r_minMag( float32_t, bool );

+uint_fast64_t f32_to_ui64_r_minMag( float32_t, bool );

+int_fast32_t f32_to_i32_r_minMag( float32_t, bool );

+int_fast64_t f32_to_i64_r_minMag( float32_t, bool );

+float64_t f32_to_f64( float32_t );

+floatx80_t f32_to_fx80( float32_t );

+float128_t f32_to_f128( float32_t );

+float32_t f32_roundToInt( float32_t, int_fast8_t, bool );

+float32_t f32_add( float32_t, float32_t );

+float32_t f32_sub( float32_t, float32_t );

+float32_t f32_mul( float32_t, float32_t );

+float32_t f32_mulAdd( float32_t, float32_t, float32_t );

+float32_t f32_div( float32_t, float32_t );

+float32_t f32_rem( float32_t, float32_t );

+float32_t f32_sqrt( float32_t );

+bool f32_eq( float32_t, float32_t );

+bool f32_le( float32_t, float32_t );

+bool f32_lt( float32_t, float32_t );

+bool f32_eq_signaling( float32_t, float32_t );

+bool f32_le_quiet( float32_t, float32_t );

+bool f32_lt_quiet( float32_t, float32_t );

+bool f32_isSignalingNaN( float32_t );

+

+/*----------------------------------------------------------------------------

+| 64-bit (double-precision) floating-point operations.

+*----------------------------------------------------------------------------*/

+uint_fast32_t f64_to_ui32( float64_t, int_fast8_t, bool );

+uint_fast64_t f64_to_ui64( float64_t, int_fast8_t, bool );

+int_fast32_t f64_to_i32( float64_t, int_fast8_t, bool );

+int_fast64_t f64_to_i64( float64_t, int_fast8_t, bool );

+uint_fast32_t f64_to_ui32_r_minMag( float64_t, bool );

+uint_fast64_t f64_to_ui64_r_minMag( float64_t, bool );

+int_fast32_t f64_to_i32_r_minMag( float64_t, bool );

+int_fast64_t f64_to_i64_r_minMag( float64_t, bool );

+float32_t f64_to_f32( float64_t );

+floatx80_t f64_to_fx80( float64_t );

+float128_t f64_to_f128( float64_t );

+float64_t f64_roundToInt( float64_t, int_fast8_t, bool );

+float64_t f64_add( float64_t, float64_t );

+float64_t f64_sub( float64_t, float64_t );

+float64_t f64_mul( float64_t, float64_t );

+float64_t f64_mulAdd( float64_t, float64_t, float64_t );

+float64_t f64_div( float64_t, float64_t );

+float64_t f64_rem( float64_t, float64_t );

+float64_t f64_sqrt( float64_t );

+bool f64_eq( float64_t, float64_t );

+bool f64_le( float64_t, float64_t );

+bool f64_lt( float64_t, float64_t );

+bool f64_eq_signaling( float64_t, float64_t );

+bool f64_le_quiet( float64_t, float64_t );

+bool f64_lt_quiet( float64_t, float64_t );

+bool f64_isSignalingNaN( float64_t );

+

+/*----------------------------------------------------------------------------

+| Extended double-precision rounding precision.  Valid values are 32, 64, and

+| 80.

+*----------------------------------------------------------------------------*/

+extern int_fast8_t floatx80_roundingPrecision;

+

+/*----------------------------------------------------------------------------

+| Extended double-precision floating-point operations.

+*----------------------------------------------------------------------------*/

+uint_fast32_t fx80_to_ui32( floatx80_t, int_fast8_t, bool );

+uint_fast64_t fx80_to_ui64( floatx80_t, int_fast8_t, bool );

+int_fast32_t fx80_to_i32( floatx80_t, int_fast8_t, bool );

+int_fast64_t fx80_to_i64( floatx80_t, int_fast8_t, bool );

+uint_fast32_t fx80_to_ui32_r_minMag( floatx80_t, bool );

+uint_fast64_t fx80_to_ui64_r_minMag( floatx80_t, bool );

+int_fast32_t fx80_to_i32_r_minMag( floatx80_t, bool );

+int_fast64_t fx80_to_i64_r_minMag( floatx80_t, bool );

+float32_t fx80_to_f32( floatx80_t );

+float64_t fx80_to_f64( floatx80_t );

+float128_t fx80_to_f128( floatx80_t );

+floatx80_t fx80_roundToInt( floatx80_t, int_fast8_t, bool );

+floatx80_t fx80_add( floatx80_t, floatx80_t );

+floatx80_t fx80_sub( floatx80_t, floatx80_t );

+floatx80_t fx80_mul( floatx80_t, floatx80_t );

+floatx80_t fx80_mulAdd( floatx80_t, floatx80_t, floatx80_t );

+floatx80_t fx80_div( floatx80_t, floatx80_t );

+floatx80_t fx80_rem( floatx80_t, floatx80_t );

+floatx80_t fx80_sqrt( floatx80_t );

+bool fx80_eq( floatx80_t, floatx80_t );

+bool fx80_le( floatx80_t, floatx80_t );

+bool fx80_lt( floatx80_t, floatx80_t );

+bool fx80_eq_signaling( floatx80_t, floatx80_t );

+bool fx80_le_quiet( floatx80_t, floatx80_t );

+bool fx80_lt_quiet( floatx80_t, floatx80_t );

+bool fx80_isSignalingNaN( floatx80_t );

+

+/*----------------------------------------------------------------------------

+| 128-bit (quadruple-precision) floating-point operations.

+*----------------------------------------------------------------------------*/

+uint_fast32_t f128_to_ui32( float128_t, int_fast8_t, bool );

+uint_fast64_t f128_to_ui64( float128_t, int_fast8_t, bool );

+int_fast32_t f128_to_i32( float128_t, int_fast8_t, bool );

+int_fast64_t f128_to_i64( float128_t, int_fast8_t, bool );

+uint_fast32_t f128_to_ui32_r_minMag( float128_t, bool );

+uint_fast64_t f128_to_ui64_r_minMag( float128_t, bool );

+int_fast32_t f128_to_i32_r_minMag( float128_t, bool );

+int_fast64_t f128_to_i64_r_minMag( float128_t, bool );

+float32_t f128_to_f32( float128_t );

+float64_t f128_to_f64( float128_t );

+floatx80_t f128_to_fx80( float128_t );

+float128_t f128_roundToInt( float128_t, int_fast8_t, bool );

+float128_t f128_add( float128_t, float128_t );

+float128_t f128_sub( float128_t, float128_t );

+float128_t f128_mul( float128_t, float128_t );

+float128_t f128_mulAdd( float128_t, float128_t, float128_t );

+float128_t f128_div( float128_t, float128_t );

+float128_t f128_rem( float128_t, float128_t );

+float128_t f128_sqrt( float128_t );

+bool f128_eq( float128_t, float128_t );

+bool f128_le( float128_t, float128_t );

+bool f128_lt( float128_t, float128_t );

+bool f128_eq_signaling( float128_t, float128_t );

+bool f128_le_quiet( float128_t, float128_t );

+bool f128_lt_quiet( float128_t, float128_t );

+bool f128_isSignalingNaN( float128_t );

+

+#ifdef __cplusplus

+}

+#endif

+

+#endif

+

diff --git a/softfloat/softfloat.mk.in b/softfloat/softfloat.mk.in
new file mode 100644
index 0000000..59993cb
--- /dev/null
+++ b/softfloat/softfloat.mk.in
@@ -0,0 +1,113 @@
+softfloat_subproject_deps = \
+	sotfloat_riscv \
+
+softfloat_hdrs = \
+	internals.h \
+	primitives.h \
+	softfloat.h \
+
+softfloat_c_srcs = \
+	f32_add.c                      \
+	f32_div.c                      \
+	f32_eq.c                       \
+	f32_eq_signaling.c             \
+	f32_isSignalingNaN.c           \
+	f32_le.c                       \
+	f32_le_quiet.c                 \
+	f32_lt.c                       \
+	f32_lt_quiet.c                 \
+	f32_mulAdd.c                   \
+	f32_mul.c                      \
+	f32_rem.c                      \
+	f32_roundToInt.c               \
+	f32_sqrt.c                     \
+	f32_sub.c                      \
+	f32_to_f64.c                   \
+	f32_to_i32.c                   \
+	f32_to_i32_r_minMag.c          \
+	f32_to_i64.c                   \
+	f32_to_i64_r_minMag.c          \
+	f32_to_ui32.c                  \
+	f32_to_ui32_r_minMag.c         \
+	f32_to_ui64.c                  \
+	f32_to_ui64_r_minMag.c         \
+	f64_add.c                      \
+	f64_div.c                      \
+	f64_eq.c                       \
+	f64_eq_signaling.c             \
+	f64_isSignalingNaN.c           \
+	f64_le.c                       \
+	f64_le_quiet.c                 \
+	f64_lt.c                       \
+	f64_lt_quiet.c                 \
+	f64_mulAdd.c                   \
+	f64_mul.c                      \
+	f64_rem.c                      \
+	f64_roundToInt.c               \
+	f64_sqrt.c                     \
+	f64_sub.c                      \
+	f64_to_f32.c                   \
+	f64_to_i32.c                   \
+	f64_to_i32_r_minMag.c          \
+	f64_to_i64.c                   \
+	f64_to_i64_r_minMag.c          \
+	f64_to_ui32.c                  \
+	f64_to_ui32_r_minMag.c         \
+	f64_to_ui64.c                  \
+	f64_to_ui64_r_minMag.c         \
+	i32_to_f32.c                   \
+	i32_to_f64.c                   \
+	i64_to_f32.c                   \
+	i64_to_f64.c                   \
+	s_add128.c                     \
+	s_add192.c                     \
+	s_addMagsF32.c                 \
+	s_addMagsF64.c                 \
+	s_countLeadingZeros32.c        \
+	s_countLeadingZeros64.c        \
+	s_countLeadingZeros8.c         \
+	s_eq128.c                      \
+	s_estimateDiv128To64.c         \
+	s_estimateSqrt32.c             \
+	s_le128.c                      \
+	s_lt128.c                      \
+	s_mul128By64To192.c            \
+	s_mul128To256.c                \
+	s_mul64To128.c                 \
+	s_mulAddF32.c                  \
+	s_mulAddF64.c                  \
+	s_normRoundPackToF32.c         \
+	s_normRoundPackToF64.c         \
+	s_normSubnormalF32Sig.c        \
+	s_normSubnormalF64Sig.c        \
+	softfloat_state.c              \
+	s_roundPackToF32.c             \
+	s_roundPackToF64.c             \
+	s_roundPackToI32.c             \
+	s_roundPackToI64.c             \
+	s_roundPackToUI32.c            \
+	s_roundPackToUI64.c            \
+	s_shift128ExtraRightJam.c      \
+	s_shift128RightJam.c           \
+	s_shift32RightJam.c            \
+	s_shift64ExtraRightJam.c       \
+	s_shift64RightJam.c            \
+	s_shortShift128ExtraRightJam.c \
+	s_shortShift128Left.c          \
+	s_shortShift128Right.c         \
+	s_shortShift192Left.c          \
+	s_shortShift32Right1Jam.c      \
+	s_shortShift64ExtraRightJam.c  \
+	s_shortShift64RightJam.c       \
+	s_sub128.c                     \
+	s_sub192.c                     \
+	s_subMagsF32.c                 \
+	s_subMagsF64.c                 \
+	ui32_to_f32.c                  \
+	ui32_to_f64.c                  \
+	ui64_to_f32.c                  \
+	ui64_to_f64.c                  \
+
+softfloat_test_srcs =
+
+softfloat_install_prog_srcs =
diff --git a/softfloat/softfloat_state.c b/softfloat/softfloat_state.c
new file mode 100755
index 0000000..8859089
--- /dev/null
+++ b/softfloat/softfloat_state.c
@@ -0,0 +1,19 @@
+

+/*** COMMENTS. ***/

+

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+/*----------------------------------------------------------------------------

+| Floating-point rounding mode, extended double-precision rounding precision,

+| and exception flags.

+*----------------------------------------------------------------------------*/

+int_fast8_t softfloat_roundingMode = softfloat_round_nearest_even;

+int_fast8_t softfloat_detectTininess = init_detectTininess;

+int_fast8_t softfloat_exceptionFlags = 0;

+

+int_fast8_t floatx80_roundingPrecision = 80;

+

diff --git a/softfloat/ui32_to_f32.c b/softfloat/ui32_to_f32.c
new file mode 100755
index 0000000..ba0fc1a
--- /dev/null
+++ b/softfloat/ui32_to_f32.c
@@ -0,0 +1,25 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+float32_t ui32_to_f32( uint_fast32_t a )

+{

+    union ui32_f32 uZ;

+

+    if ( ! a ) {

+        uZ.ui = 0;

+        return uZ.f;

+    }

+    if ( a & 0x80000000 ) {

+        return

+            softfloat_roundPackToF32(

+                0, 0x9D, softfloat_shortShift32Right1Jam( a ) );

+    } else {

+        return softfloat_normRoundPackToF32( 0, 0x9C, a );

+    }

+

+}

+

diff --git a/softfloat/ui32_to_f64.c b/softfloat/ui32_to_f64.c
new file mode 100755
index 0000000..d0bd177
--- /dev/null
+++ b/softfloat/ui32_to_f64.c
@@ -0,0 +1,26 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+float64_t ui32_to_f64( uint_fast32_t a )

+{

+    uint_fast64_t uiZ;

+    int shiftCount;

+    union ui64_f64 uZ;

+

+    if ( ! a ) {

+        uiZ = 0;

+    } else {

+        shiftCount = softfloat_countLeadingZeros32( a ) + 21;

+        uiZ =

+            packToF64UI(

+                0, 0x432 - shiftCount, (uint_fast64_t) a<<shiftCount );

+    }

+    uZ.ui = uiZ;

+    return uZ.f;

+

+}

+

diff --git a/softfloat/ui64_to_f32.c b/softfloat/ui64_to_f32.c
new file mode 100755
index 0000000..82afbdc
--- /dev/null
+++ b/softfloat/ui64_to_f32.c
@@ -0,0 +1,31 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+float32_t ui64_to_f32( uint_fast64_t a )

+{

+    int shiftCount;

+    union ui32_f32 u;

+    uint_fast32_t sig;

+

+    shiftCount = softfloat_countLeadingZeros64( a ) - 40;

+    if ( 0 <= shiftCount ) {

+        u.ui =

+            a ? packToF32UI(

+                    0, 0x95 - shiftCount, (uint_fast32_t) a<<shiftCount )

+                : 0;

+        return u.f;

+    } else {

+        shiftCount += 7;

+        sig =

+            ( shiftCount < 0 )

+                ? softfloat_shortShift64RightJam( a, - shiftCount )

+                : (uint_fast32_t) a<<shiftCount;

+        return softfloat_roundPackToF32( 0, 0x9C - shiftCount, sig );

+    }

+

+}

+

diff --git a/softfloat/ui64_to_f64.c b/softfloat/ui64_to_f64.c
new file mode 100755
index 0000000..52c158b
--- /dev/null
+++ b/softfloat/ui64_to_f64.c
@@ -0,0 +1,25 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "primitives.h"

+#include "internals.h"

+#include "softfloat.h"

+

+float64_t ui64_to_f64( uint_fast64_t a )

+{

+    union ui64_f64 uZ;

+

+    if ( ! a ) {

+        uZ.ui = 0;

+        return uZ.f;

+    }

+    if ( a & UINT64_C( 0x8000000000000000 ) ) {

+        return

+            softfloat_roundPackToF64(

+                0, 0x43D, softfloat_shortShift64RightJam( a, 1 ) );

+    } else {

+        return softfloat_normRoundPackToF64( 0, 0x43C, a );

+    }

+

+}

+

diff --git a/softfloat_riscv/platform.h b/softfloat_riscv/platform.h
new file mode 100755
index 0000000..6c54313
--- /dev/null
+++ b/softfloat_riscv/platform.h
@@ -0,0 +1,42 @@
+
+/*============================================================================
+
+*** FIX.
+
+This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
+Arithmetic Package, Release 2b.
+
+Written by John R. Hauser.  This work was made possible in part by the
+International Computer Science Institute, located at Suite 600, 1947 Center
+Street, Berkeley, California 94704.  Funding was partially provided by the
+National Science Foundation under grant MIP-9311980.  The original version
+of this code was written as part of a project to build a fixed-point vector
+processor in collaboration with the University of California at Berkeley,
+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
+is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
+arithmetic/SoftFloat.html'.
+
+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has
+been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
+RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
+AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
+COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
+EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
+INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
+OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
+
+Derivative works are acceptable, even for commercial purposes, so long as
+(1) the source code for the derivative work includes prominent notice that
+the work is derivative, and (2) the source code includes prominent notice with
+these four paragraphs for those parts of this code that are retained.
+
+=============================================================================*/
+
+/*----------------------------------------------------------------------------
+*----------------------------------------------------------------------------*/
+#define LITTLEENDIAN
+
+#ifndef UINT64_C
+# define UINT64_C(x) (x ## ULL)
+# define INT64_C(x) (x ## LL)
+#endif
diff --git a/softfloat_riscv/s_commonNaNToF32UI.c b/softfloat_riscv/s_commonNaNToF32UI.c
new file mode 100755
index 0000000..61f2735
--- /dev/null
+++ b/softfloat_riscv/s_commonNaNToF32UI.c
@@ -0,0 +1,17 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "specialize.h"

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the canonical NaN `a' to the single-

+| precision floating-point format.

+*----------------------------------------------------------------------------*/

+

+uint_fast32_t softfloat_commonNaNToF32UI( struct commonNaN a )

+{

+

+    return (uint_fast32_t) a.sign<<31 | 0x7FFFFFFF;

+

+}

+

diff --git a/softfloat_riscv/s_commonNaNToF64UI.c b/softfloat_riscv/s_commonNaNToF64UI.c
new file mode 100755
index 0000000..da36c04
--- /dev/null
+++ b/softfloat_riscv/s_commonNaNToF64UI.c
@@ -0,0 +1,18 @@
+
+#include <stdint.h>
+#include "platform.h"
+#include "specialize.h"
+
+/*----------------------------------------------------------------------------
+| Returns the result of converting the canonical NaN `a' to the double-
+| precision floating-point format.
+*----------------------------------------------------------------------------*/
+
+uint_fast64_t softfloat_commonNaNToF64UI( struct commonNaN a )
+{
+
+    return
+        (uint_fast64_t) a.sign<<63 | UINT64_C( 0x7FFFFFFFFFFFFFFF );
+
+}
+
diff --git a/softfloat_riscv/s_f32UIToCommonNaN.c b/softfloat_riscv/s_f32UIToCommonNaN.c
new file mode 100755
index 0000000..9ee0db9
--- /dev/null
+++ b/softfloat_riscv/s_f32UIToCommonNaN.c
@@ -0,0 +1,25 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the single-precision floating-point NaN

+| `a' to the canonical NaN format.  If `a' is a signaling NaN, the invalid

+| exception is raised.

+*----------------------------------------------------------------------------*/

+struct commonNaN softfloat_f32UIToCommonNaN( uint_fast32_t uiA )

+{

+    struct commonNaN z;

+

+    if ( softfloat_isSigNaNF32UI( uiA ) ) {

+        softfloat_raiseFlags( softfloat_flag_invalid );

+    }

+    z.sign = uiA>>31;

+    z.v64 = (uint_fast64_t) 0x7FFFF <<41;

+    z.v0 = 0;

+    return z;

+

+}

+

diff --git a/softfloat_riscv/s_f64UIToCommonNaN.c b/softfloat_riscv/s_f64UIToCommonNaN.c
new file mode 100755
index 0000000..84d8ca0
--- /dev/null
+++ b/softfloat_riscv/s_f64UIToCommonNaN.c
@@ -0,0 +1,25 @@
+

+#include <stdint.h>

+#include "platform.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+/*----------------------------------------------------------------------------

+| Returns the result of converting the double-precision floating-point NaN

+| `a' to the canonical NaN format.  If `a' is a signaling NaN, the invalid

+| exception is raised.

+*----------------------------------------------------------------------------*/

+struct commonNaN softfloat_f64UIToCommonNaN( uint_fast64_t uiA )

+{

+    struct commonNaN z;

+

+    if ( softfloat_isSigNaNF64UI( uiA ) ) {

+        softfloat_raiseFlags( softfloat_flag_invalid );

+    }

+    z.sign = uiA>>63;

+    z.v64 = (uint_fast64_t) 0xFFFFFFFFFFFFF <<12;

+    z.v0 = 0;

+    return z;

+

+}

+

diff --git a/softfloat_riscv/s_isSigNaNF32UI.c b/softfloat_riscv/s_isSigNaNF32UI.c
new file mode 100755
index 0000000..0a9c33f
--- /dev/null
+++ b/softfloat_riscv/s_isSigNaNF32UI.c
@@ -0,0 +1,13 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "specialize.h"
+
+bool softfloat_isSigNaNF32UI( uint_fast32_t ui )
+{
+
+    return ( ( ui>>22 & 0x1FF ) == 0x1FE ) && ( ui & 0x003FFFFF );
+
+}
+
diff --git a/softfloat_riscv/s_isSigNaNF64UI.c b/softfloat_riscv/s_isSigNaNF64UI.c
new file mode 100755
index 0000000..d255213
--- /dev/null
+++ b/softfloat_riscv/s_isSigNaNF64UI.c
@@ -0,0 +1,15 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "specialize.h"
+
+bool softfloat_isSigNaNF64UI( uint_fast64_t ui )
+{
+
+    return
+        ( ( ui>>51 & 0xFFF ) == 0xFFE )
+            && ( ui & UINT64_C( 0x0007FFFFFFFFFFFF ) );
+
+}
+
diff --git a/softfloat_riscv/s_propagateNaNF32UI.c b/softfloat_riscv/s_propagateNaNF32UI.c
new file mode 100755
index 0000000..07774e8
--- /dev/null
+++ b/softfloat_riscv/s_propagateNaNF32UI.c
@@ -0,0 +1,55 @@
+

+/*** UPDATE COMMENTS. ***/

+

+#include <stdbool.h>

+#include <stdint.h>

+#include "platform.h"

+#include "internals.h"

+#include "specialize.h"

+#include "softfloat.h"

+

+/*----------------------------------------------------------------------------

+| Takes two single-precision floating-point values `a' and `b', one of which

+| is a NaN, and returns the appropriate NaN result.  If either `a' or `b' is a

+| signaling NaN, the invalid exception is raised.

+*----------------------------------------------------------------------------*/

+

+uint_fast32_t

+ softfloat_propagateNaNF32UI( uint_fast32_t uiA, uint_fast32_t uiB )

+{

+    bool isNaNA, isSigNaNA, isNaNB, isSigNaNB;

+    uint_fast32_t uiMagA, uiMagB;

+

+    /*------------------------------------------------------------------------

+    *------------------------------------------------------------------------*/

+    isNaNA = isNaNF32UI( uiA );

+    isSigNaNA = softfloat_isSigNaNF32UI( uiA );

+    isNaNB = isNaNF32UI( uiB );

+    isSigNaNB = softfloat_isSigNaNF32UI( uiB );

+    /*------------------------------------------------------------------------

+    | Make NaNs non-signaling.

+    *------------------------------------------------------------------------*/

+    uiA |= 0x00400000;

+    uiB |= 0x00400000;

+    /*------------------------------------------------------------------------

+    *------------------------------------------------------------------------*/

+    if ( isSigNaNA | isSigNaNB ) {

+        softfloat_raiseFlags( softfloat_flag_invalid );

+    }

+    if ( isSigNaNA ) {

+        if ( isSigNaNB ) goto returnLargerSignificand;

+        return isNaNB ? uiB : uiA;

+    } else if ( isNaNA ) {

+        if ( isSigNaNB || ! isNaNB ) return uiA;

+ returnLargerSignificand:

+        uiMagA = uiA<<1;

+        uiMagB = uiB<<1;

+        if ( uiMagA < uiMagB ) return uiB;

+        if ( uiMagB < uiMagA ) return uiA;

+        return ( uiA < uiB ) ? uiA : uiB;

+    } else {

+        return uiB;

+    }

+

+}

+

diff --git a/softfloat_riscv/s_propagateNaNF64UI.c b/softfloat_riscv/s_propagateNaNF64UI.c
new file mode 100755
index 0000000..0ff6446
--- /dev/null
+++ b/softfloat_riscv/s_propagateNaNF64UI.c
@@ -0,0 +1,55 @@
+
+/*** UPDATE COMMENTS. ***/
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+/*----------------------------------------------------------------------------
+| Takes two double-precision floating-point values `a' and `b', one of which
+| is a NaN, and returns the appropriate NaN result.  If either `a' or `b' is a
+| signaling NaN, the invalid exception is raised.
+*----------------------------------------------------------------------------*/
+
+uint_fast64_t
+ softfloat_propagateNaNF64UI( uint_fast64_t uiA, uint_fast64_t uiB )
+{
+    bool isNaNA, isSigNaNA, isNaNB, isSigNaNB;
+    uint_fast64_t uiMagA, uiMagB;
+
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    isNaNA = isNaNF64UI( uiA );
+    isSigNaNA = softfloat_isSigNaNF64UI( uiA );
+    isNaNB = isNaNF64UI( uiB );
+    isSigNaNB = softfloat_isSigNaNF64UI( uiB );
+    /*------------------------------------------------------------------------
+    | Make NaNs non-signaling.
+    *------------------------------------------------------------------------*/
+    uiA |= UINT64_C( 0x0008000000000000 );
+    uiB |= UINT64_C( 0x0008000000000000 );
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    if ( isSigNaNA | isSigNaNB ) {
+        softfloat_raiseFlags( softfloat_flag_invalid );
+    }
+    if ( isSigNaNA ) {
+        if ( isSigNaNB ) goto returnLargerSignificand;
+        return isNaNB ? uiB : uiA;
+    } else if ( isNaNA ) {
+        if ( isSigNaNB || ! isNaNB ) return uiA;
+ returnLargerSignificand:
+        uiMagA = uiA & UINT64_C( 0x7FFFFFFFFFFFFFFF );
+        uiMagB = uiB & UINT64_C( 0x7FFFFFFFFFFFFFFF );
+        if ( uiMagA < uiMagB ) return uiB;
+        if ( uiMagB < uiMagA ) return uiA;
+        return ( uiA < uiB ) ? uiA : uiB;
+    } else {
+        return uiB;
+    }
+
+}
+
diff --git a/softfloat_riscv/softfloat_raiseFlags.c b/softfloat_riscv/softfloat_raiseFlags.c
new file mode 100755
index 0000000..c0c0dc8
--- /dev/null
+++ b/softfloat_riscv/softfloat_raiseFlags.c
@@ -0,0 +1,51 @@
+
+/*============================================================================
+
+*** FIX.
+
+This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
+Arithmetic Package, Release 2b.
+
+Written by John R. Hauser.  This work was made possible in part by the
+International Computer Science Institute, located at Suite 600, 1947 Center
+Street, Berkeley, California 94704.  Funding was partially provided by the
+National Science Foundation under grant MIP-9311980.  The original version
+of this code was written as part of a project to build a fixed-point vector
+processor in collaboration with the University of California at Berkeley,
+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
+is available through the Web page `http://www.cs.berkeley.edu/~jhauser/
+arithmetic/SoftFloat.html'.
+
+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has
+been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
+RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
+AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,
+COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE
+EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE
+INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR
+OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
+
+Derivative works are acceptable, even for commercial purposes, so long as
+(1) the source code for the derivative work includes prominent notice that
+the work is derivative, and (2) the source code includes prominent notice with
+these four paragraphs for those parts of this code that are retained.
+
+=============================================================================*/
+
+#include "platform.h"
+#include "softfloat.h"
+
+/*----------------------------------------------------------------------------
+| Raises the exceptions specified by `flags'.  Floating-point traps can be
+| defined here if desired.  It is currently not possible for such a trap
+| to substitute a result value.  If traps are not implemented, this routine
+| should be simply `float_exception_flags |= flags;'.
+*----------------------------------------------------------------------------*/
+
+void softfloat_raiseFlags( int_fast8_t flags )
+{
+
+    softfloat_exceptionFlags |= flags;
+
+}
+
diff --git a/softfloat_riscv/softfloat_riscv.ac b/softfloat_riscv/softfloat_riscv.ac
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/softfloat_riscv/softfloat_riscv.ac
diff --git a/softfloat_riscv/softfloat_riscv.mk.in b/softfloat_riscv/softfloat_riscv.mk.in
new file mode 100644
index 0000000..0b898ed
--- /dev/null
+++ b/softfloat_riscv/softfloat_riscv.mk.in
@@ -0,0 +1,21 @@
+softfloat_riscv_subproject_deps = \
+
+softfloat_riscv_hdrs = \
+	softfloat_types.h \
+	platform.h        \
+	specialize.h      \
+
+softfloat_riscv_c_srcs = \
+	softfloat_raiseFlags.c \
+	s_commonNaNToF32UI.c   \
+	s_commonNaNToF64UI.c   \
+	s_f32UIToCommonNaN.c   \
+	s_f64UIToCommonNaN.c   \
+	s_isSigNaNF32UI.c      \
+	s_isSigNaNF64UI.c      \
+	s_propagateNaNF32UI.c  \
+	s_propagateNaNF64UI.c  \
+
+softfloat_riscv_test_srcs =
+
+softfloat_riscv_install_prog_srcs =
diff --git a/softfloat_riscv/softfloat_types.h b/softfloat_riscv/softfloat_types.h
new file mode 100755
index 0000000..9fada89
--- /dev/null
+++ b/softfloat_riscv/softfloat_types.h
@@ -0,0 +1,16 @@
+
+#ifndef softfloat_types_h
+#define softfloat_types_h
+
+/*** COMMENTS. ***/
+
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef uint32_t float32_t;
+typedef uint64_t float64_t;
+typedef struct { uint64_t v; uint16_t x; } floatx80_t;
+typedef struct { uint64_t v[ 2 ]; } float128_t;
+
+#endif
+
diff --git a/softfloat_riscv/specialize.h b/softfloat_riscv/specialize.h
new file mode 100755
index 0000000..bf57bc9
--- /dev/null
+++ b/softfloat_riscv/specialize.h
@@ -0,0 +1,113 @@
+

+/*============================================================================

+

+*** FIX.

+

+This C source fragment is part of the SoftFloat IEC/IEEE Floating-point

+Arithmetic Package, Release 2b.

+

+Written by John R. Hauser.  This work was made possible in part by the

+International Computer Science Institute, located at Suite 600, 1947 Center

+Street, Berkeley, California 94704.  Funding was partially provided by the

+National Science Foundation under grant MIP-9311980.  The original version

+of this code was written as part of a project to build a fixed-point vector

+processor in collaboration with the University of California at Berkeley,

+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information

+is available through the Web page `http://www.cs.berkeley.edu/~jhauser/

+arithmetic/SoftFloat.html'.

+

+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort has

+been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES

+RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS

+AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES,

+COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE

+EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE

+INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR

+OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.

+

+Derivative works are acceptable, even for commercial purposes, so long as

+(1) the source code for the derivative work includes prominent notice that

+the work is derivative, and (2) the source code includes prominent notice with

+these four paragraphs for those parts of this code that are retained.

+

+=============================================================================*/

+

+#include <stdbool.h>

+#include <stdint.h>

+

+/*----------------------------------------------------------------------------

+*----------------------------------------------------------------------------*/

+#define init_detectTininess softfloat_tininess_beforeRounding;

+

+/*----------------------------------------------------------------------------

+| Structure used to transfer NaN representations from one format to another.

+*----------------------------------------------------------------------------*/

+struct commonNaN {

+    bool sign;

+    uint64_t v64, v0;

+};

+

+/*----------------------------------------------------------------------------

+| The pattern for a default generated single-precision NaN.

+*----------------------------------------------------------------------------*/

+#define defaultNaNF32UI 0xFFFFFFFF

+

+/*----------------------------------------------------------------------------

+| Returns 1 if the single-precision floating-point value `a' is a signaling

+| NaN; otherwise, returns 0.

+*----------------------------------------------------------------------------*/

+#if defined INLINE_LEVEL && ( 1 <= INLINE_LEVEL )

+INLINE bool softfloat_isSigNaNF32UI( uint_fast32_t ui )

+    { return ( ( ui>>22 & 0x1FF ) == 0x1FE ) && ( ui & 0x003FFFFF ); }

+#else

+bool softfloat_isSigNaNF32UI( uint_fast32_t );

+#endif

+

+/*----------------------------------------------------------------------------

+*----------------------------------------------------------------------------*/

+struct commonNaN softfloat_f32UIToCommonNaN( uint_fast32_t );

+#if defined INLINE_LEVEL && ( 1 <= INLINE_LEVEL )

+INLINE uint_fast32_t softfloat_commonNaNToF32UI( struct commonNaN a )

+    { return (uint_fast32_t) a.sign<<31 | 0x7FFFFFFF; }

+#else

+uint_fast32_t softfloat_commonNaNToF32UI( struct commonNaN );

+#endif

+

+/*----------------------------------------------------------------------------

+| Takes two single-precision floating-point values `a' and `b', one of which

+| is a NaN, and returns the appropriate NaN result.  If either `a' or `b' is a

+| signaling NaN, the invalid exception is raised.

+*----------------------------------------------------------------------------*/

+uint_fast32_t softfloat_propagateNaNF32UI( uint_fast32_t, uint_fast32_t );

+

+/*----------------------------------------------------------------------------

+| The pattern for a default generated double-precision NaN.

+*----------------------------------------------------------------------------*/

+#define defaultNaNF64UI UINT64_C(0xFFF8000000000000)

+

+/*----------------------------------------------------------------------------

+*----------------------------------------------------------------------------*/

+#if defined INLINE_LEVEL && ( 1 <= INLINE_LEVEL )

+INLINE bool softfloat_isSigNaNF64UI( uint_fast64_t ui )

+{

+    return

+        ( ( ui>>51 & 0xFFF ) == 0xFFE )

+            && ( ui & UINT64_C( 0x0007FFFFFFFFFFFF ) );

+}

+#else

+bool softfloat_isSigNaNF64UI( uint_fast64_t );

+#endif

+

+/*----------------------------------------------------------------------------

+*----------------------------------------------------------------------------*/

+/*** MIGHT BE INLINE'D. ***/

+struct commonNaN softfloat_f64UIToCommonNaN( uint_fast64_t );

+uint_fast64_t softfloat_commonNaNToF64UI( struct commonNaN );

+

+/*----------------------------------------------------------------------------

+| Takes two double-precision floating-point values `a' and `b', one of which

+| is a NaN, and returns the appropriate NaN result.  If either `a' or `b' is a

+| signaling NaN, the invalid exception is raised.

+*----------------------------------------------------------------------------*/

+uint_fast64_t softfloat_propagateNaNF64UI( uint_fast64_t, uint_fast64_t );

+