Add BID decimal support

Co-Authored-By: H.J. Lu <hongjiu.lu@intel.com>
Co-Authored-By: Marius Cornea <marius.cornea@intel.com>

From-SVN: r123185

4 files changed, 120 insertions, 8 deletions

diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 4b42b2c..4271a401 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,18 @@
+2007-03-23  Michael Meissner  <michael.meissner@amd.com>
+	    H.J. Lu  <hongjiu.lu@intel.com>
+
+	* Makefile.in (enable_decimal_float): New.
+	(DECNUMINC): Add
+	-I$(srcdir)/../libdecnumber/$(enable_decimal_float).
+	(dec-objects): Move decimal32, decimal64 and decimal128 to ...
+	(decbits-filenames): This.
+	(decbits-objects): New.
+	(libgcc-objects): Add $(decbits-objects).
+
+	* configure.ac: Support * --enable-decimal-float={no,yes,bid,dpd}.
+	Substitute enable_decimal_float.
+	* configure: Regenerated.
+
 2007-03-19  Hans-Peter Nilsson  <hp@axis.com>
 
 	* config.host (cris-*-elf | cris-*-none): Set extra_parts.
diff --git a/libgcc/Makefile.in b/libgcc/Makefile.in
index 63c9512..684c80a 100644
--- a/libgcc/Makefile.in
+++ b/libgcc/Makefile.in
@@ -37,6 +37,7 @@ SHELL = @SHELL@
 
 enable_shared = @enable_shared@
 decimal_float = @decimal_float@
+enable_decimal_float = @enable_decimal_float@
 
 host_noncanonical = @host_noncanonical@
 
@@ -183,7 +184,13 @@ export slibdir
 
 version := $(shell $(CC) -dumpversion)
 
-DECNUMINC = -I$(srcdir)/../libdecnumber -I$(MULTIBUILDTOP)../../libdecnumber
+ifeq ($(decimal_float),yes)
+DECNUMINC = -I$(srcdir)/../libdecnumber/$(enable_decimal_float) \
+	    -I$(srcdir)/../libdecnumber \
+	    -I$(MULTIBUILDTOP)../../libdecnumber
+else
+DECNUMINC =
+endif
 
 # Specify the directories to be searched for header files.
 # Both . and srcdir are used, in that order,
@@ -467,22 +474,32 @@ ifneq ($(D32PBIT)$(D64PBIT)$(D128PBIT),)
 dec-filenames += decContext decNumber decExcept decRound decLibrary decUtility
 endif
 
+dec-objects = $(patsubst %,%$(objext),$(dec-filenames))
+$(dec-objects): %$(objext): $(srcdir)/../libdecnumber/%.c
+	$(gcc_compile) -c $<
+libgcc-objects += $(dec-objects)
+
+decbits-filenames =
 ifneq ($(D32PBIT),)
-dec-filenames += decimal32
+decbits-filenames += decimal32
 endif
 
 ifneq ($(D64PBIT),)
-dec-filenames += decimal64
+decbits-filenames += decimal64
 endif
 
 ifneq ($(D128PBIT),)
-dec-filenames += decimal128
+decbits-filenames += decimal128
 endif
 
-dec-objects = $(patsubst %,%$(objext),$(dec-filenames))
-$(dec-objects): %$(objext): $(srcdir)/../libdecnumber/%.c
+ifeq ($(enable_decimal_float),bid)
+decbits-filenames += bid2dpd_dpd2bid
+endif
+
+decbits-objects = $(patsubst %,%$(objext),$(decbits-filenames))
+$(decbits-objects): %$(objext): $(srcdir)/../libdecnumber/$(enable_decimal_float)/%.c
 	$(gcc_compile) -c $<
-libgcc-objects += $(dec-objects)
+libgcc-objects += $(decbits-objects)
 
 # Next build individual support functions.
 ifneq ($(D32PBIT),)
diff --git a/libgcc/configure b/libgcc/configure
index b90dfa1..492e976 100644
--- a/libgcc/configure
+++ b/libgcc/configure
@@ -272,7 +272,7 @@ PACKAGE_STRING='GNU C Runtime Library 1.0'
 PACKAGE_BUGREPORT=''
 
 ac_unique_file="static-object.mk"
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS libgcc_topdir enable_shared slibdir INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA AWK build build_cpu build_vendor build_os host host_cpu host_vendor host_os host_noncanonical build_libsubdir build_subdir host_subdir target_subdir AR ac_ct_AR LIPO ac_ct_LIPO NM ac_ct_NM RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP LN_S CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP decimal_float vis_hide tmake_file extra_parts asm_hidden_op LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS libgcc_topdir enable_shared slibdir INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA AWK build build_cpu build_vendor build_os host host_cpu host_vendor host_os host_noncanonical build_libsubdir build_subdir host_subdir target_subdir AR ac_ct_AR LIPO ac_ct_LIPO NM ac_ct_NM RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP LN_S CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP decimal_float enable_decimal_float vis_hide tmake_file extra_parts asm_hidden_op LIBOBJS LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -811,6 +811,10 @@ Optional Features:
   --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
   --disable-shared        don't provide a shared libgcc
   --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory
+  --enable-decimal-float={no,yes,bid,dpd}
+			enable decimal float extension to C.  Selecting 'bid'
+			or 'dpd' choses which decimal floating point format
+			to use
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -3286,6 +3290,45 @@ echo "${ECHO_T}$libgcc_cv_dfp" >&6
 decimal_float=$libgcc_cv_dfp
 
 
+# Check whether --enable-decimal-float or --disable-decimal-float was given.
+if test "${enable_decimal_float+set}" = set; then
+  enableval="$enable_decimal_float"
+
+  case $enable_decimal_float in
+    yes | no | bid | dpd) ;;
+    *) { { echo "$as_me:$LINENO: error: '$enable_decimal_float' is an invalid value for --enable-decimal-float.
+Valid choices are 'yes', 'bid', 'dpd', and 'no'." >&5
+echo "$as_me: error: '$enable_decimal_float' is an invalid value for --enable-decimal-float.
+Valid choices are 'yes', 'bid', 'dpd', and 'no'." >&2;}
+   { (exit 1); exit 1; }; } ;;
+  esac
+
+else
+
+  case $target in
+    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
+      enable_decimal_float=yes
+      ;;
+    *)
+      enable_decimal_float=no
+      ;;
+  esac
+
+fi;
+
+# x86's use BID format instead of DPD
+if test x$enable_decimal_float = xyes; then
+  case $target in
+    i?86*-*-linux* | x86_64*-*-linux*)
+      enable_decimal_float=bid
+      ;;
+    *)
+      enable_decimal_float=dpd
+      ;;
+  esac
+fi
+
+
 # Collect host-machine-specific information.
 . ${srcdir}/config.host
 
@@ -4039,6 +4082,7 @@ s,@EXEEXT@,$EXEEXT,;t t
 s,@OBJEXT@,$OBJEXT,;t t
 s,@CPP@,$CPP,;t t
 s,@decimal_float@,$decimal_float,;t t
+s,@enable_decimal_float@,$enable_decimal_float,;t t
 s,@vis_hide@,$vis_hide,;t t
 s,@tmake_file@,$tmake_file,;t t
 s,@extra_parts@,$extra_parts,;t t
diff --git a/libgcc/configure.ac b/libgcc/configure.ac
index 825805d..2e95e31 100644
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -107,6 +107,42 @@ AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp],
 decimal_float=$libgcc_cv_dfp
 AC_SUBST(decimal_float)
 
+AC_ARG_ENABLE(decimal-float,
+[  --enable-decimal-float={no,yes,bid,dpd}
+			enable decimal float extension to C.  Selecting 'bid'
+			or 'dpd' choses which decimal floating point format
+			to use],
+[
+  case $enable_decimal_float in
+    yes | no | bid | dpd) ;;
+    *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
+Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
+  esac
+],
+[
+  case $target in
+    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
+      enable_decimal_float=yes
+      ;;
+    *)
+      enable_decimal_float=no
+      ;;
+  esac
+])
+
+# x86's use BID format instead of DPD
+if test x$enable_decimal_float = xyes; then
+  case $target in
+    i?86*-*-linux* | x86_64*-*-linux*)
+      enable_decimal_float=bid
+      ;;
+    *)
+      enable_decimal_float=dpd
+      ;;
+  esac
+fi
+AC_SUBST(enable_decimal_float)
+
 # Collect host-machine-specific information.
 . ${srcdir}/config.host