[sim/rx]

* README.txt: New.
* config.h (CYCLE_ACCURATE, CYCLE_STATS): New.
* configure.in (--enable-cycle-accurate, --enable-cycle-stats):
New.  Default to enabled.
* configure: Regenerate.

* cpu.h (regs_type): Add cycle tracking info.
(reset_pipeline_stats): Declare.
(halt_pipeline_stats): Declare.
(pipeline_stats): Declare.
* main.c (done): Call pipeline_stats().
* mem.h (rx_mem_ptr): Moved to here ...
* mem.c (mem_ptr): ... from here.  Rename throughout.
(mem_put_byte): Move LEDs to Port A.  Add Port B to control cycle
statistics.  Move UART to SCI4.
(mem_put_hi): Add TPU 1-2.  TPU 1 and 2 count CPU cycles.
* reg.c (init_regs): Set Rt reg to -1 (no reg).
* rx.c: Add cycle counting and statistics throughout.
(rx_get_byte): Optimize for speed.
(decode_opcode): Likewise.
(reset_pipeline_stats): New.
(halt_pipeline_stats): New.
(pipeline_stats): New.
* trace.c (sim_disasm_one): Print cycle count.

[include/opcode]
* rx.h (RX_Opcode_ID): Add nop2 and nop3 for statistics.

12 files changed, 2359 insertions, 748 deletions

diff --git a/sim/rx/ChangeLog b/sim/rx/ChangeLog
index 25dc711..ff3c808 100644
--- a/sim/rx/ChangeLog
+++ b/sim/rx/ChangeLog
@@ -1,3 +1,30 @@
+2010-07-27  DJ Delorie  <dj@redhat.com>
+
+	* README.txt: New.
+	* config.h (CYCLE_ACCURATE, CYCLE_STATS): New.
+	* configure.in (--enable-cycle-accurate, --enable-cycle-stats):
+	New.  Default to enabled.
+	* configure: Regenerate.
+
+	* cpu.h (regs_type): Add cycle tracking info.
+	(reset_pipeline_stats): Declare.
+	(halt_pipeline_stats): Declare.
+	(pipeline_stats): Declare.
+	* main.c (done): Call pipeline_stats().
+	* mem.h (rx_mem_ptr): Moved to here ...
+	* mem.c (mem_ptr): ... from here.  Rename throughout.
+	(mem_put_byte): Move LEDs to Port A.  Add Port B to control cycle
+	statistics.  Move UART to SCI4.
+	(mem_put_hi): Add TPU 1-2.  TPU 1 and 2 count CPU cycles.
+	* reg.c (init_regs): Set Rt reg to -1 (no reg).
+	* rx.c: Add cycle counting and statistics throughout.
+	(rx_get_byte): Optimize for speed.
+	(decode_opcode): Likewise.
+	(reset_pipeline_stats): New.
+	(halt_pipeline_stats): New.
+	(pipeline_stats): New.
+	* trace.c (sim_disasm_one): Print cycle count.
+
 2010-07-07  Kevin Buettner  <kevinb@redhat.com>
 
 	* gdb-if.c (sim_store_register): Add case for sim_rx_acc_regnum.
diff --git a/sim/rx/README.txt b/sim/rx/README.txt
new file mode 100644
index 0000000..496e6a1
--- /dev/null
+++ b/sim/rx/README.txt
@@ -0,0 +1,121 @@
+The RX simulator offers two rx-specific configure options:
+
+--enable-cycle-accurate  (default)
+--disable-cycle-accurate
+
+If enabled, the simulator will keep track of how many cycles each
+instruction takes.  While not 100% accurate, it is very close,
+including modelling fetch stalls and register latency.
+
+--enable-cycle-stats  (default)
+--disable-cycle-stats
+
+If enabled, specifying "-v" twice on the simulator command line causes
+the simulator to print statistics on how much time was used by each
+type of opcode, and what pairs of opcodes tend to happen most
+frequently, as well as how many times various pipeline stalls
+happened.
+
+
+
+The RX simulator offers many command line options:
+
+-v - verbose output.  This prints some information about where the
+program is being loaded and its starting address, as well as
+information about how much memory was used and how many instructions
+were executed during the run.  If specified twice, pipeline and cycle
+information are added to the report.
+
+-d - disassemble output.  Each instruction executed is printed.
+
+-t - trace output.  Causes a *lot* of printed information about what
+  every instruction is doing, from math results down to register
+  changes.
+
+--ignore-*
+--warn-*
+--error-*
+
+  The RX simulator can detect certain types of memory corruption, and
+  either ignore them, warn the user about them, or error and exit.
+  Note that valid GCC code may trigger some of these, for example,
+  writing a bitfield involves reading the existing value, which may
+  not have been set yet.  The options for * are:
+
+    null-deref - memory access to address zero.  You must modify your
+      linker script to avoid putting anything at location zero, of
+      course.
+
+    unwritten-pages - attempts to read a page of memory (see below)
+      before it is written.  This is much faster than the next option.
+
+    unwritten-bytes - attempts to read individual bytes before they're
+      written.
+
+    corrupt-stack - On return from a subroutine, the memory location
+      where $pc was stored is checked to see if anything other than
+      $pc had been written to it most recently.
+
+-i -w -e - these three options change the settings for all of the
+  above.  For example, "-i" tells the simulator to ignore all memory
+  corruption.
+
+-E - end of options.  Any remaining options (after the program name)
+  are considered to be options for the simulated program, although
+  such functionality is not supported.
+
+
+
+The RX simulator simulates a small number of peripherals, mostly in
+order to provide I/O capabilities for testing and such.  The supported
+peripherals, and their limitations, are documented here.
+
+Memory
+
+Memory for the simulator is stored in a hierarchical tree, much like
+the i386's page directory and page tables.  The simulator can allocate
+memory to individual pages as needed, allowing the simulated program
+to act as if it had a full 4 Gb of RAM at its disposal, without
+actually allocating more memory from the host operating system than
+the simulated program actually uses.  Note that for each page of
+memory, there's a corresponding page of memory *types* (for tracking
+memory corruption).  Memory is initially filled with all zeros.
+
+GPIO Port A
+
+PA.DR is configured as an output-only port (regardless of PA.DDR).
+When written to, a row of colored @ and * symbols are printed,
+reflecting a row of eight LEDs being either on or off.
+
+GPIO Port B
+
+PB.DR controls the pipeline statistics.  Writing a 0 to PB.DR disables
+statistics gathering.  Writing a non-0 to PB.DR resets all counters
+and enables (even if already enabled) statistics gathering.  The
+simulator starts with statistics enabled, so writing to PB.DR is not
+needed if you want statistics on the entire program's run.
+
+SCI4
+
+SCI4.TDR is connected to the simulator's stdout.  Any byte written to
+SCI4.TDR is written to stdout.  If the simulated program writes the
+bytes 3, 3, and N in sequence, the simulator exits with an exit value
+of N.
+
+SCI4.SSR always returns "transmitter empty".
+
+
+TPU1.TCNT
+TPU2.TCNT
+
+TPU1 and TPU2 are configured as a chained 32-bit counter which counts
+machine cycles.  It always runs at "ICLK speed", regardless of the
+clock control settings.  Writing to either of these 16-bit registers
+zeros the counter, regardless of the value written.  Reading from
+these registers returns the elapsed cycle count, with TPU1 holding the
+most significant word and TPU2 holding the least significant word.
+
+Note that, much like the hardware, these values may (TPU2.CNT *will*)
+change between reads, so you must read TPU1.CNT, then TPU2.CNT, and
+then TPU1.CNT again, and only trust the values if both reads of
+TPU1.CNT were the same.
diff --git a/sim/rx/config.in b/sim/rx/config.in
index f71c45f..7263de3 100644
--- a/sim/rx/config.in
+++ b/sim/rx/config.in
@@ -105,3 +105,9 @@
 
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
+
+/* --enable-cycle-accurate */
+#undef CYCLE_ACCURATE
+
+/* --enable-cycle-stats */
+#undef CYCLE_STATS
diff --git a/sim/rx/configure b/sim/rx/configure
index 56d03ac..40c4b76 100755
--- a/sim/rx/configure
+++ b/sim/rx/configure
@@ -601,9 +601,6 @@ sim_debug
 sim_cflags
 sim_bswap
 MAINT
-EGREP
-GREP
-CPP
 CATOBJEXT
 GENCAT
 INSTOBJEXT
@@ -623,13 +620,6 @@ CC_FOR_BUILD
 INSTALL_DATA
 INSTALL_SCRIPT
 INSTALL_PROGRAM
-OBJEXT
-EXEEXT
-ac_ct_CC
-CPPFLAGS
-LDFLAGS
-CFLAGS
-CC
 target_os
 target_vendor
 target_cpu
@@ -663,6 +653,16 @@ sim_bitsize
 sim_assert
 sim_alignment
 sim_environment
+EGREP
+GREP
+CPP
+OBJEXT
+EXEEXT
+ac_ct_CC
+CPPFLAGS
+LDFLAGS
+CFLAGS
+CC
 target_alias
 host_alias
 build_alias
@@ -704,6 +704,8 @@ SHELL'
 ac_subst_files=''
 ac_user_opts='
 enable_option_checking
+enable_cycle_accurate
+enable_cycle_stats
 with_zlib
 enable_maintainer_mode
 enable_sim_bswap
@@ -1342,6 +1344,8 @@ 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]
+  --disable-cycle-accurate
+  --disable-cycle-stats
   --enable-maintainer-mode		Enable developer functionality.
   --enable-sim-bswap			Use Host specific BSWAP instruction.
   --enable-sim-cflags=opts		Extra CFLAGS for use in building simulator
@@ -2147,6 +2151,1184 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 ac_config_headers="$ac_config_headers config.h:config.in"
 
+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=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
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+		  inttypes.h stdint.h unistd.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
+"
+eval as_val=\$$as_ac_Header
+   if test "x$as_val" = x""yes; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in getopt.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "getopt.h" "ac_cv_header_getopt_h" "$ac_includes_default"
+if test "x$ac_cv_header_getopt_h" = x""yes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_GETOPT_H 1
+_ACEOF
+
+fi
+
+done
+
 
 # This file contains common code used by all simulators.
 #
@@ -2192,13 +3374,17 @@ ac_config_headers="$ac_config_headers config.h:config.in"
 
 
 
+# _AC_CHECK_DECL_BODY
+# -------------------
+# Shell function body for AC_CHECK_DECL.
+# _AC_CHECK_DECL_BODY
 
-
-
-
-
-
-
+# _AC_CHECK_DECLS(SYMBOL, ACTION-IF_FOUND, ACTION-IF-NOT-FOUND,
+#                 INCLUDES)
+# -------------------------------------------------------------
+# Helper to AC_CHECK_DECLS, which generates the check for a single
+# SYMBOL with INCLUDES, performs the AC_DEFINE, then expands
+# ACTION-IF-FOUND or ACTION-IF-NOT-FOUND.
 
 
 
@@ -2415,6 +3601,42 @@ sim_inline="-DDEFAULT_INLINE=0"
 
 
 
+# Check whether --enable-cycle-accurate was given.
+if test "${enable_cycle_accurate+set}" = set; then :
+  enableval=$enable_cycle_accurate; case "${enableval}" in
+yes | no) ;;
+*)	as_fn_error "bad value ${enableval} given for --enable-cycle-accurate option" "$LINENO" 5 ;;
+esac
+fi
+
+
+# Check whether --enable-cycle-stats was given.
+if test "${enable_cycle_stats+set}" = set; then :
+  enableval=$enable_cycle_stats; case "${enableval}" in
+yes | no) ;;
+*)	as_fn_error "bad value ${enableval} given for --enable-cycle-stats option" "$LINENO" 5 ;;
+esac
+fi
+
+
+echo enable_cycle_accurate is $enable_cycle_accurate
+echo enable_cycle_stats is $enable_cycle_stats
+
+if test "x${enable_cycle_accurate}" != xno; then
+$as_echo "#define CYCLE_ACCURATE 1" >>confdefs.h
+
+
+  if test "x${enable_cycle_stats}" != xno; then
+  $as_echo "#define CYCLE_STATS 1" >>confdefs.h
+
+  fi
+else
+  if test "x${enable_cycle_stats}" != xno; then
+  as_fn_error "cycle-stats not available without cycle-accurate" "$LINENO" 5
+  fi
+fi
+
+
 # Bugs in autoconf 2.59 break the call to SIM_AC_COMMON, hack around
 # it by inlining the macro's contents.
 # This file contains common code used by all simulators.
@@ -2908,231 +4130,6 @@ $as_echo "$ac_try_echo"; } >&5
   test $ac_status = 0; }
 done
 
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-ac_clean_files_save=$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 :
@@ -3619,405 +4616,6 @@ fi
 # Check for common headers.
 # FIXME: Seems to me this can cause problems for i386-windows hosts.
 # At one point there were hardcoded AC_DEFINE's if ${host} = i386-*-windows*.
-
-ac_ext=c
-ac_cpp='$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
-
-# On IRIX 5.3, sys/types and inttypes.h are conflicting.
-for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
-		  inttypes.h stdint.h unistd.h
-do :
-  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
-"
-eval as_val=\$$as_ac_Header
-   if test "x$as_val" = x""yes; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-
-done
-
-
 for ac_header in stdlib.h string.h strings.h unistd.h time.h
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
@@ -4517,19 +5115,6 @@ sim_link_files="${sim_link_files} ${TARG_VALS_DEF}"
 sim_link_links="${sim_link_links} targ-vals.def"
 
 
-for ac_header in getopt.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "getopt.h" "ac_cv_header_getopt_h" "$ac_includes_default"
-if test "x$ac_cv_header_getopt_h" = x""yes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_GETOPT_H 1
-_ACEOF
-
-fi
-
-done
-
-
 
 ac_sources="$sim_link_files"
 ac_dests="$sim_link_links"
diff --git a/sim/rx/configure.in b/sim/rx/configure.in
index 7c51815..653689e 100644
--- a/sim/rx/configure.in
+++ b/sim/rx/configure.in
@@ -25,6 +25,36 @@ AC_CHECK_HEADERS(getopt.h)
 
 sinclude(../common/aclocal.m4)
 
+AC_ARG_ENABLE(cycle-accurate,
+[  --disable-cycle-accurate ],
+[case "${enableval}" in
+yes | no) ;;
+*)	AC_MSG_ERROR(bad value ${enableval} given for --enable-cycle-accurate option) ;;
+esac])
+
+AC_ARG_ENABLE(cycle-stats,
+[  --disable-cycle-stats ],
+[case "${enableval}" in
+yes | no) ;;
+*)	AC_MSG_ERROR(bad value ${enableval} given for --enable-cycle-stats option) ;;
+esac])
+
+echo enable_cycle_accurate is $enable_cycle_accurate
+echo enable_cycle_stats is $enable_cycle_stats
+
+if test "x${enable_cycle_accurate}" != xno; then
+AC_DEFINE([CYCLE_ACCURATE])
+
+  if test "x${enable_cycle_stats}" != xno; then
+  AC_DEFINE([CYCLE_STATS])
+  fi
+else
+  if test "x${enable_cycle_stats}" != xno; then
+  AC_ERROR([cycle-stats not available without cycle-accurate])
+  fi
+fi
+
+
 # Bugs in autoconf 2.59 break the call to SIM_AC_COMMON, hack around
 # it by inlining the macro's contents.
 sinclude(../common/common.m4)
diff --git a/sim/rx/cpu.h b/sim/rx/cpu.h
index a4afab7..74ab4b6 100644
--- a/sim/rx/cpu.h
+++ b/sim/rx/cpu.h
@@ -76,8 +76,24 @@ typedef struct
   SI r_temp;
 
   DI r_acc;
+
+#ifdef CYCLE_ACCURATE
+  /* If set, RTS/RTSD take 2 fewer cycles.  */
+  char fast_return;
+  SI link_register;
+
+  unsigned long long cycle_count;
+  /* Bits saying what kind of memory operands the previous insn had.  */
+  int m2m;
+  /* Target register for load. */
+  int rt;
+#endif
 } regs_type;
 
+#define M2M_SRC		0x01
+#define M2M_DST		0x02
+#define M2M_BOTH	0x03
+
 #define sp	0
 #define psw	16
 #define	pc	17
@@ -219,6 +235,9 @@ extern unsigned int heaptop;
 extern unsigned int heapbottom;
 
 extern int decode_opcode (void);
+extern void reset_pipeline_stats (void);
+extern void halt_pipeline_stats (void);
+extern void pipeline_stats (void);
 
 extern void trace_register_changes ();
 extern void generate_access_exception (void);
diff --git a/sim/rx/main.c b/sim/rx/main.c
index a83794e..27ff0b8 100644
--- a/sim/rx/main.c
+++ b/sim/rx/main.c
@@ -82,6 +82,8 @@ done (int exit_code)
 	printf ("insns: %14s\n", comma (rx_cycles));
       else
 	printf ("insns: %u\n", rx_cycles);
+
+      pipeline_stats ();
     }
   exit (exit_code);
 }
diff --git a/sim/rx/mem.c b/sim/rx/mem.c
index 5556ea0..3b7a7a2 100644
--- a/sim/rx/mem.c
+++ b/sim/rx/mem.c
@@ -25,6 +25,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
    1.  */
 #define RDCHECK 0
 
+#include "config.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -37,7 +38,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #define L1_BITS  (10)
 #define L2_BITS  (10)
-#define OFF_BITS (12)
+#define OFF_BITS PAGE_BITS
 
 #define L1_LEN  (1 << L1_BITS)
 #define L2_LEN  (1 << L2_BITS)
@@ -70,15 +71,8 @@ init_mem (void)
   memset (mem_counters, 0, sizeof (mem_counters));
 }
 
-enum mem_ptr_action
-{
-  MPA_WRITING,
-  MPA_READING,
-  MPA_CONTENT_TYPE
-};
-
-static unsigned char *
-mem_ptr (unsigned long address, enum mem_ptr_action action)
+unsigned char *
+rx_mem_ptr (unsigned long address, enum mem_ptr_action action)
 {
   int pt1 = (address >> (L2_BITS + OFF_BITS)) & ((1 << L1_BITS) - 1);
   int pt2 = (address >> OFF_BITS) & ((1 << L2_BITS) - 1);
@@ -240,7 +234,7 @@ e ()
 static char
 mtypec (int address)
 {
-  unsigned char *cp = mem_ptr (address, MPA_CONTENT_TYPE);
+  unsigned char *cp = rx_mem_ptr (address, MPA_CONTENT_TYPE);
   return "udp"[*cp];
 }
 
@@ -254,48 +248,75 @@ mem_put_byte (unsigned int address, unsigned char value)
 
   if (trace)
     tc = mtypec (address);
-  m = mem_ptr (address, MPA_WRITING);
+  m = rx_mem_ptr (address, MPA_WRITING);
   if (trace)
     printf (" %02x%c", value, tc);
   *m = value;
   switch (address)
     {
-    case 0x00e1:
-      {
+    case 0x0008c02a: /* PA.DR */
+     {
 	static int old_led = -1;
-	static char *led_on[] =
-	  { "\033[31m O ", "\033[32m O ", "\033[34m O " };
-	static char *led_off[] = { "\033[0m · ", "\033[0m · ", "\033[0m · " };
+	int red_on = 0;
 	int i;
+
 	if (old_led != value)
 	  {
-	    fputs ("  ", stdout);
-	    for (i = 0; i < 3; i++)
+	    fputs (" ", stdout);
+	    for (i = 0; i < 8; i++)
 	      if (value & (1 << i))
-		fputs (led_off[i], stdout);
+		{
+		  if (! red_on)
+		    {
+		      fputs ("\033[31m", stdout);
+		      red_on = 1;
+		    }
+		  fputs (" @", stdout);
+		}
 	      else
-		fputs (led_on[i], stdout);
-	    fputs ("\033[0m\r", stdout);
+		{
+		  if (red_on)
+		    {
+		      fputs ("\033[0m", stdout);
+		      red_on = 0;
+		    }
+		  fputs (" *", stdout);
+		}
+
+	    if (red_on)
+	      fputs ("\033[0m", stdout);
+
+	    fputs ("\r", stdout);
 	    fflush (stdout);
 	    old_led = value;
 	  }
       }
       break;
 
-    case 0x3aa: /* uart1tx */
+#ifdef CYCLE_STATS
+    case 0x0008c02b: /* PB.DR */
       {
-	static int pending_exit = 0;
 	if (value == 0)
+	  halt_pipeline_stats ();
+	else
+	  reset_pipeline_stats ();
+      }
+#endif
+
+    case 0x00088263: /* SCI4.TDR */
+      {
+	static int pending_exit = 0;
+	if (pending_exit == 2)
 	  {
-	    if (pending_exit)
-	      {
-		step_result = RX_MAKE_EXITED(value);
-		return;
-	      }
-	    pending_exit = 1;
+	    step_result = RX_MAKE_EXITED(value);
+	    longjmp (decode_jmp_buf, 1);
 	  }
+	else if (value == 3)
+	  pending_exit ++;
 	else
-	  putchar(value);
+	  pending_exit = 0;
+
+	putchar(value);
       }
       break;
 
@@ -314,19 +335,33 @@ mem_put_qi (int address, unsigned char value)
   COUNT (1, 1);
 }
 
+static int tpu_base;
+
 void
 mem_put_hi (int address, unsigned short value)
 {
   S ("<=");
-  if (rx_big_endian)
-    {
-      mem_put_byte (address, value >> 8);
-      mem_put_byte (address + 1, value & 0xff);
-    }
-  else
+  switch (address)
     {
-      mem_put_byte (address, value & 0xff);
-      mem_put_byte (address + 1, value >> 8);
+#ifdef CYCLE_ACCURATE
+    case 0x00088126: /* TPU1.TCNT */
+      tpu_base = regs.cycle_count;
+      break;
+    case 0x00088136: /* TPU2.TCNT */
+      tpu_base = regs.cycle_count;
+      break;
+#endif
+    default:
+      if (rx_big_endian)
+	{
+	  mem_put_byte (address, value >> 8);
+	  mem_put_byte (address + 1, value & 0xff);
+	}
+      else
+	{
+	  mem_put_byte (address, value & 0xff);
+	  mem_put_byte (address + 1, value >> 8);
+	}
     }
   E ();
   COUNT (1, 2);
@@ -388,7 +423,7 @@ mem_put_blk (int address, void *bufptr, int nbytes)
 unsigned char
 mem_get_pc (int address)
 {
-  unsigned char *m = mem_ptr (address, MPA_READING);
+  unsigned char *m = rx_mem_ptr (address, MPA_READING);
   COUNT (0, 0);
   return *m;
 }
@@ -399,12 +434,12 @@ mem_get_byte (unsigned int address)
   unsigned char *m;
 
   S ("=>");
-  m = mem_ptr (address, MPA_READING);
+  m = rx_mem_ptr (address, MPA_READING);
   switch (address)
     {
-    case 0x3ad: /* uart1c1 */
+    case 0x00088264: /* SCI4.SSR */
       E();
-      return 2; /* transmitter empty */
+      return 0x04; /* transmitter empty */
       break;
     default: 
       if (trace)
@@ -433,15 +468,28 @@ mem_get_hi (int address)
 {
   unsigned short rv;
   S ("=>");
-  if (rx_big_endian)
-    {
-      rv = mem_get_byte (address) << 8;
-      rv |= mem_get_byte (address + 1);
-    }
-  else
+  switch (address)
     {
-      rv = mem_get_byte (address);
-      rv |= mem_get_byte (address + 1) << 8;
+#ifdef CYCLE_ACCURATE
+    case 0x00088126: /* TPU1.TCNT */
+      rv = (regs.cycle_count - tpu_base) >> 16;
+      break;
+    case 0x00088136: /* TPU2.TCNT */
+      rv = (regs.cycle_count - tpu_base) >> 0;
+      break;
+#endif
+
+    default:
+      if (rx_big_endian)
+	{
+	  rv = mem_get_byte (address) << 8;
+	  rv |= mem_get_byte (address + 1);
+	}
+      else
+	{
+	  rv = mem_get_byte (address);
+	  rv |= mem_get_byte (address + 1) << 8;
+	}
     }
   COUNT (0, 2);
   E ();
@@ -520,7 +568,7 @@ sign_ext (int v, int bits)
 void
 mem_set_content_type (int address, enum mem_content_type type)
 {
-  unsigned char *mt = mem_ptr (address, MPA_CONTENT_TYPE);
+  unsigned char *mt = rx_mem_ptr (address, MPA_CONTENT_TYPE);
   *mt = type;
 }
 
@@ -537,7 +585,7 @@ mem_set_content_range (int start_address, int end_address, enum mem_content_type
       if (sz + ofs > L1_LEN)
 	sz = L1_LEN - ofs;
 
-      mt = mem_ptr (start_address, MPA_CONTENT_TYPE);
+      mt = rx_mem_ptr (start_address, MPA_CONTENT_TYPE);
       memset (mt, type, sz);
 
       start_address += sz;
@@ -547,6 +595,6 @@ mem_set_content_range (int start_address, int end_address, enum mem_content_type
 enum mem_content_type
 mem_get_content_type (int address)
 {
-  unsigned char *mt = mem_ptr (address, MPA_CONTENT_TYPE);
+  unsigned char *mt = rx_mem_ptr (address, MPA_CONTENT_TYPE);
   return *mt;
 }
diff --git a/sim/rx/mem.h b/sim/rx/mem.h
index 1b8320a..37740d5 100644
--- a/sim/rx/mem.h
+++ b/sim/rx/mem.h
@@ -25,10 +25,25 @@ enum mem_content_type {
      MC_NUM_TYPES
 };
 
+enum mem_ptr_action
+{
+  MPA_WRITING,
+  MPA_READING,
+  MPA_CONTENT_TYPE
+};
+
 void init_mem (void);
 void mem_usage_stats (void);
 unsigned long mem_usage_cycles (void);
 
+/* rx_mem_ptr returns a pointer which is valid as long as the address
+   requested remains within the same page.  */
+#define PAGE_BITS 12
+#define PAGE_SIZE (1 << PAGE_BITS)
+#define NONPAGE_MASK (~(PAGE_SIZE-1))
+
+unsigned char *rx_mem_ptr (unsigned long address, enum mem_ptr_action action);
+
 void mem_put_qi (int address, unsigned char value);
 void mem_put_hi (int address, unsigned short value);
 void mem_put_psi (int address, unsigned long value);
diff --git a/sim/rx/reg.c b/sim/rx/reg.c
index f635b6d..0103d21 100644
--- a/sim/rx/reg.c
+++ b/sim/rx/reg.c
@@ -19,6 +19,7 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 
+#include "config.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -67,6 +68,11 @@ init_regs (void)
 {
   memset (&regs, 0, sizeof (regs));
   memset (&oldregs, 0, sizeof (oldregs));
+
+#ifdef CYCLE_ACCURATE
+  regs.rt = -1;
+  oldregs.rt = -1;
+#endif
 }
 
 static unsigned int
diff --git a/sim/rx/rx.c b/sim/rx/rx.c
index f1ce809..a6503de 100644
--- a/sim/rx/rx.c
+++ b/sim/rx/rx.c
@@ -18,6 +18,7 @@ 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, see <http://www.gnu.org/licenses/>.  */
 
+#include "config.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -29,12 +30,253 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "syscalls.h"
 #include "fpu.h"
 #include "err.h"
+#include "misc.h"
+
+#ifdef CYCLE_STATS
+static const char * id_names[] = {
+  "RXO_unknown",
+  "RXO_mov",	/* d = s (signed) */
+  "RXO_movbi",	/* d = [s,s2] (signed) */
+  "RXO_movbir",	/* [s,s2] = d (signed) */
+  "RXO_pushm",	/* s..s2 */
+  "RXO_popm",	/* s..s2 */
+  "RXO_xchg",	/* s <-> d */
+  "RXO_stcc",	/* d = s if cond(s2) */
+  "RXO_rtsd",	/* rtsd, 1=imm, 2-0 = reg if reg type */
+
+  /* These are all either d OP= s or, if s2 is set, d = s OP s2.  Note
+     that d may be "None".  */
+  "RXO_and",
+  "RXO_or",
+  "RXO_xor",
+  "RXO_add",
+  "RXO_sub",
+  "RXO_mul",
+  "RXO_div",
+  "RXO_divu",
+  "RXO_shll",
+  "RXO_shar",
+  "RXO_shlr",
+
+  "RXO_adc",	/* d = d + s + carry */
+  "RXO_sbb",	/* d = d - s - ~carry */
+  "RXO_abs",	/* d = |s| */
+  "RXO_max",	/* d = max(d,s) */
+  "RXO_min",	/* d = min(d,s) */
+  "RXO_emul",	/* d:64 = d:32 * s */
+  "RXO_emulu",	/* d:64 = d:32 * s (unsigned) */
+  "RXO_ediv",	/* d:64 / s; d = quot, d+1 = rem */
+  "RXO_edivu",	/* d:64 / s; d = quot, d+1 = rem */
+
+  "RXO_rolc",	/* d <<= 1 through carry */
+  "RXO_rorc",	/* d >>= 1 through carry*/
+  "RXO_rotl",	/* d <<= #s without carry */
+  "RXO_rotr",	/* d >>= #s without carry*/
+  "RXO_revw",	/* d = revw(s) */
+  "RXO_revl",	/* d = revl(s) */
+  "RXO_branch",	/* pc = d if cond(s) */
+  "RXO_branchrel",/* pc += d if cond(s) */
+  "RXO_jsr",	/* pc = d */
+  "RXO_jsrrel",	/* pc += d */
+  "RXO_rts",
+  "RXO_nop",
+  "RXO_nop2",
+  "RXO_nop3",
+
+  "RXO_scmpu",
+  "RXO_smovu",
+  "RXO_smovb",
+  "RXO_suntil",
+  "RXO_swhile",
+  "RXO_smovf",
+  "RXO_sstr",
+
+  "RXO_rmpa",
+  "RXO_mulhi",
+  "RXO_mullo",
+  "RXO_machi",
+  "RXO_maclo",
+  "RXO_mvtachi",
+  "RXO_mvtaclo",
+  "RXO_mvfachi",
+  "RXO_mvfacmi",
+  "RXO_mvfaclo",
+  "RXO_racw",
+
+  "RXO_sat",	/* sat(d) */
+  "RXO_satr",
+
+  "RXO_fadd",	/* d op= s */
+  "RXO_fcmp",
+  "RXO_fsub",
+  "RXO_ftoi",
+  "RXO_fmul",
+  "RXO_fdiv",
+  "RXO_round",
+  "RXO_itof",
+
+  "RXO_bset",	/* d |= (1<<s) */
+  "RXO_bclr",	/* d &= ~(1<<s) */
+  "RXO_btst",	/* s & (1<<s2) */
+  "RXO_bnot",	/* d ^= (1<<s) */
+  "RXO_bmcc",	/* d<s> = cond(s2) */
+
+  "RXO_clrpsw",	/* flag index in d */
+  "RXO_setpsw",	/* flag index in d */
+  "RXO_mvtipl",	/* new IPL in s */
+
+  "RXO_rtfi",
+  "RXO_rte",
+  "RXO_rtd",	/* undocumented */
+  "RXO_brk",
+  "RXO_dbt",	/* undocumented */
+  "RXO_int",	/* vector id in s */
+  "RXO_stop",
+  "RXO_wait",
+
+  "RXO_sccnd",	/* d = cond(s) ? 1 : 0 */
+};
+
+static const char * optype_names[] = {
+  "    ",
+  "#Imm",	/* #addend */
+  " Rn ",	/* Rn */
+  "[Rn]",	/* [Rn + addend] */
+  "Ps++",	/* [Rn+] */
+  "--Pr",	/* [-Rn] */
+  " cc ",	/* eq, gtu, etc */
+  "Flag"	/* [UIOSZC] */
+};
+
+#define N_RXO (sizeof(id_names)/sizeof(id_names[0]))
+#define N_RXT (sizeof(optype_names)/sizeof(optype_names[0]))
+#define N_MAP 30
+
+static unsigned long long benchmark_start_cycle;
+static unsigned long long benchmark_end_cycle;
+
+static int op_cache[N_RXT][N_RXT][N_RXT];
+static int op_cache_rev[N_MAP];
+static int op_cache_idx = 0;
+
+static int
+op_lookup (int a, int b, int c)
+{
+  if (op_cache[a][b][c])
+    return op_cache[a][b][c];
+  op_cache_idx ++;
+  if (op_cache_idx >= N_MAP)
+    {
+      printf("op_cache_idx exceeds %d\n", N_MAP);
+      exit(1);
+    }
+  op_cache[a][b][c] = op_cache_idx;
+  op_cache_rev[op_cache_idx] = (a<<8) | (b<<4) | c;
+  return op_cache_idx;
+}
+
+static char *
+op_cache_string (int map)
+{
+  static int ci;
+  static char cb[5][20];
+  int a, b, c;
+
+  map = op_cache_rev[map];
+  a = (map >> 8) & 15;
+  b = (map >> 4) & 15;
+  c = (map >> 0) & 15;
+  ci = (ci + 1) % 5;
+  sprintf(cb[ci], "%s %s %s", optype_names[a], optype_names[b], optype_names[c]);
+  return cb[ci];
+}
+
+static unsigned long long cycles_per_id[N_RXO][N_MAP];
+static unsigned long long times_per_id[N_RXO][N_MAP];
+static unsigned long long memory_stalls;
+static unsigned long long register_stalls;
+static unsigned long long branch_stalls;
+static unsigned long long branch_alignment_stalls;
+static unsigned long long fast_returns;
+
+static unsigned long times_per_pair[N_RXO][N_MAP][N_RXO][N_MAP];
+static int prev_opcode_id = RXO_unknown;
+static int po0;
+
+#define STATS(x) x
+
+#else
+#define STATS(x)
+#endif /* CYCLE_STATS */
+
+
+#ifdef CYCLE_ACCURATE
+
+static int new_rt = -1;
+
+/* Number of cycles to add if an insn spans an 8-byte boundary.  */
+static int branch_alignment_penalty = 0;
 
-#define tprintf if (trace) printf
+#endif
+
+static int running_benchmark = 1;
+
+#define tprintf if (trace && running_benchmark) printf
 
 jmp_buf decode_jmp_buf;
 unsigned int rx_cycles = 0;
 
+#ifdef CYCLE_ACCURATE
+/* If nonzero, memory was read at some point and cycle latency might
+   take effect.  */
+static int memory_source = 0;
+/* If nonzero, memory was written and extra cycles might be
+   needed.  */
+static int memory_dest = 0;
+
+static void
+cycles (int throughput)
+{
+  tprintf("%d cycles\n", throughput);
+  regs.cycle_count += throughput;
+}
+
+/* Number of execution (E) cycles the op uses.  For memory sources, we
+   include the load micro-op stall as two extra E cycles.  */
+#define E(c) cycles (memory_source ? c + 2 : c)
+#define E1 cycles (1)
+#define E2 cycles (2)
+#define EBIT cycles (memory_source ? 2 : 1)
+
+/* Check to see if a read latency must be applied for a given register.  */
+#define RL(r) \
+  if (regs.rt == r )							\
+    {									\
+      tprintf("register %d load stall\n", r);				\
+      regs.cycle_count ++;						\
+      STATS(register_stalls ++);					\
+      regs.rt = -1;							\
+    }
+
+#define RLD(r)					\
+  if (memory_source)				\
+    {						\
+      tprintf ("Rt now %d\n", r);		\
+      new_rt = r;				\
+    }
+
+#else /* !CYCLE_ACCURATE */
+
+#define cycles(t)
+#define E(c)
+#define E1
+#define E2
+#define EBIT
+#define RL(r)
+#define RLD(r)
+
+#endif /* else CYCLE_ACCURATE */
+
 static int size2bytes[] = {
   4, 1, 1, 1, 2, 2, 2, 3, 4
 };
@@ -53,24 +295,28 @@ _rx_abort (const char *file, int line)
   abort();
 }
 
+static unsigned char *get_byte_base;
+static SI get_byte_page;
+
+/* This gets called a *lot* so optimize it.  */
 static int
 rx_get_byte (void *vdata)
 {
-  int saved_trace = trace;
-  unsigned char rv;
-
-  if (trace == 1)
-    trace = 0;
-
   RX_Data *rx_data = (RX_Data *)vdata;
+  SI tpc = rx_data->dpc;
+
+  /* See load.c for an explanation of this.  */
   if (rx_big_endian)
-    /* See load.c for an explanation of this.  */
-    rv = mem_get_pc (rx_data->dpc ^ 3);
-  else
-    rv = mem_get_pc (rx_data->dpc);
+    tpc ^= 3;
+
+  if (((tpc ^ get_byte_page) & NONPAGE_MASK) || enable_counting)
+    {
+      get_byte_page = tpc & NONPAGE_MASK;
+      get_byte_base = rx_mem_ptr (get_byte_page, MPA_READING) - get_byte_page;
+    }
+
   rx_data->dpc ++;
-  trace = saved_trace;
-  return rv;
+  return get_byte_base [tpc];
 }
 
 static int
@@ -88,6 +334,7 @@ get_op (RX_Opcode_Decoded *rd, int i)
       return o->addend;
 
     case RX_Operand_Register:	/* Rn */
+      RL (o->reg);
       rv = get_reg (o->reg);
       break;
 
@@ -96,6 +343,21 @@ get_op (RX_Opcode_Decoded *rd, int i)
       /* fall through */
     case RX_Operand_Postinc:	/* [Rn+] */
     case RX_Operand_Indirect:	/* [Rn + addend] */
+#ifdef CYCLE_ACCURATE
+      RL (o->reg);
+      regs.rt = -1;
+      if (regs.m2m == M2M_BOTH)
+	{
+	  tprintf("src memory stall\n");
+#ifdef CYCLE_STATS
+	  memory_stalls ++;
+#endif
+	  regs.cycle_count ++;
+	  regs.m2m = 0;
+	}
+
+      memory_source = 1;
+#endif
 
       addr = get_reg (o->reg) + o->addend;
       switch (o->size)
@@ -234,6 +496,7 @@ put_op (RX_Opcode_Decoded *rd, int i, int v)
 
     case RX_Operand_Register:	/* Rn */
       put_reg (o->reg, v);
+      RLD (o->reg);
       break;
 
     case RX_Operand_Predec:	/* [-Rn] */
@@ -242,6 +505,19 @@ put_op (RX_Opcode_Decoded *rd, int i, int v)
     case RX_Operand_Postinc:	/* [Rn+] */
     case RX_Operand_Indirect:	/* [Rn + addend] */
 
+#ifdef CYCLE_ACCURATE
+      if (regs.m2m == M2M_BOTH)
+	{
+	  tprintf("dst memory stall\n");
+	  regs.cycle_count ++;
+#ifdef CYCLE_STATS
+	  memory_stalls ++;
+#endif
+	  regs.m2m = 0;
+	}
+      memory_dest = 1;
+#endif
+
       addr = get_reg (o->reg) + o->addend;
       switch (o->size)
 	{
@@ -345,8 +621,8 @@ poppc()
 
 #define MATH_OP(vop,c)				\
 { \
-  uma = US1(); \
   umb = US2(); \
+  uma = US1(); \
   ll = (unsigned long long) uma vop (unsigned long long) umb vop c; \
   tprintf ("0x%x " #vop " 0x%x " #vop " 0x%x = 0x%llx\n", uma, umb, c, ll); \
   ma = sign_ext (uma, DSZ() * 8);					\
@@ -355,23 +631,25 @@ poppc()
   tprintf ("%d " #vop " %d " #vop " %d = %lld\n", ma, mb, c, sll); \
   set_oszc (sll, DSZ(), (long long) ll > ((1 vop 1) ? (long long) b2mask[DSZ()] : (long long) -1)); \
   PD (sll); \
+  E (1);    \
 }
 
 #define LOGIC_OP(vop) \
 { \
-  ma = US1(); \
   mb = US2(); \
+  ma = US1(); \
   v = ma vop mb; \
   tprintf("0x%x " #vop " 0x%x = 0x%x\n", ma, mb, v); \
   set_sz (v, DSZ()); \
   PD(v); \
+  E (1); \
 }
 
 #define SHIFT_OP(val, type, count, OP, carry_mask)	\
 { \
   int i, c=0; \
-  val = (type)US1();				\
   count = US2(); \
+  val = (type)US1();				\
   tprintf("%lld " #OP " %d\n", val, count); \
   for (i = 0; i < count; i ++) \
     { \
@@ -443,8 +721,8 @@ fop_fsub (fp_t s1, fp_t s2, fp_t *d)
   int do_store;   \
   fp_t fa, fb, fc; \
   FPCLEAR(); \
-  fa = GD (); \
   fb = GS (); \
+  fa = GD (); \
   do_store = fop_##func (fa, fb, &fc); \
   tprintf("%g " #func " %g = %g %08x\n", int2float(fa), int2float(fb), int2float(fc), fc); \
   FPCHECK(); \
@@ -549,6 +827,21 @@ do_fp_exception (unsigned long opcode_pc)
   return RX_MAKE_STEPPED ();
 }
 
+static int
+op_is_memory (RX_Opcode_Decoded *rd, int i)
+{
+  switch (rd->op[i].type)
+    {
+    case RX_Operand_Predec:
+    case RX_Operand_Postinc:
+    case RX_Operand_Indirect:
+      return 1;
+    default:
+      return 0;
+    }
+}
+#define OM(i) op_is_memory (&opcode, i)
+
 int
 decode_opcode ()
 {
@@ -561,14 +854,46 @@ decode_opcode ()
   RX_Data rx_data;
   RX_Opcode_Decoded opcode;
   int rv;
+#ifdef CYCLE_STATS
+  unsigned long long prev_cycle_count;
+#endif
+#ifdef CYCLE_ACCURATE
+  int tx;
+#endif
 
   if ((rv = setjmp (decode_jmp_buf)))
     return rv;
 
+#ifdef CYCLE_STATS
+  prev_cycle_count = regs.cycle_count;
+#endif
+
+#ifdef CYCLE_ACCURATE
+  memory_source = 0;
+  memory_dest = 0;
+#endif
+
   rx_cycles ++;
 
   rx_data.dpc = opcode_pc = regs.r_pc;
+  memset (&opcode, 0, sizeof(opcode));
   opcode_size = rx_decode_opcode (opcode_pc, &opcode, rx_get_byte, &rx_data);
+
+#ifdef CYCLE_ACCURATE
+  if (branch_alignment_penalty)
+    {
+      if ((regs.r_pc ^ (regs.r_pc + opcode_size - 1)) & ~7)
+	{
+	  tprintf("1 cycle branch alignment penalty\n");
+	  cycles (branch_alignment_penalty);
+#ifdef CYCLE_STATS
+	  branch_alignment_stalls ++;
+#endif
+	}
+      branch_alignment_penalty = 0;
+    }
+#endif
+
   regs.r_pc += opcode_size;
 
   rx_flagmask = opcode.flags_s;
@@ -585,6 +910,7 @@ decode_opcode ()
       tprintf("%lld\n", sll);
       PD (sll);
       set_osz (sll, 4);
+      E (1);
       break;
 
     case RXO_adc:
@@ -608,6 +934,7 @@ decode_opcode ()
 	mb &= 0x07;
       ma &= ~(1 << mb);
       PD (ma);
+      EBIT;
       break;
 
     case RXO_bmcc:
@@ -622,6 +949,7 @@ decode_opcode ()
       else
 	ma &= ~(1 << mb);
       PD (ma);
+      EBIT;
       break;
 
     case RXO_bnot:
@@ -633,16 +961,71 @@ decode_opcode ()
 	mb &= 0x07;
       ma ^= (1 << mb);
       PD (ma);
+      EBIT;
       break;
 
     case RXO_branch:
       if (GS())
-	regs.r_pc = GD();
+	{
+#ifdef CYCLE_ACCURATE
+	  SI old_pc = regs.r_pc;
+	  int delta;
+#endif
+	  regs.r_pc = GD();
+#ifdef CYCLE_ACCURATE
+	  delta = regs.r_pc - old_pc;
+	  if (delta >= 0 && delta < 16
+	      && opcode_size > 1)
+	    {
+	      tprintf("near forward branch bonus\n");
+	      cycles (2);
+	    }
+	  else
+	    {
+	      cycles (3);
+	      branch_alignment_penalty = 1;
+	    }
+#ifdef CYCLE_STATS
+	  branch_stalls ++;
+	  /* This is just for statistics */
+	  if (opcode.op[1].reg == 14)
+	    opcode.op[1].type = RX_Operand_None;
+#endif
+#endif
+	}
+#ifdef CYCLE_ACCURATE
+      else
+	cycles (1);
+#endif
       break;
 
     case RXO_branchrel:
       if (GS())
-	regs.r_pc += GD();
+	{
+	  int delta = GD();
+	  regs.r_pc += delta;
+#ifdef CYCLE_ACCURATE
+	  /* Note: specs say 3, chip says 2.  */
+	  if (delta >= 0 && delta < 16
+	      && opcode_size > 1)
+	    {
+	      tprintf("near forward branch bonus\n");
+	      cycles (2);
+	    }
+	  else
+	    {
+	      cycles (3);
+	      branch_alignment_penalty = 1;
+	    }
+#ifdef CYCLE_STATS
+	  branch_stalls ++;
+#endif
+#endif
+	}
+#ifdef CYCLE_ACCURATE
+      else
+	cycles (1);
+#endif
       break;
 
     case RXO_brk:
@@ -659,6 +1042,7 @@ decode_opcode ()
 	pushpc (old_psw);
 	pushpc (regs.r_pc);
 	regs.r_pc = mem_get_si (regs.r_intb);
+	cycles(6);
       }
       break;
 
@@ -671,6 +1055,7 @@ decode_opcode ()
 	mb &= 0x07;
       ma |= (1 << mb);
       PD (ma);
+      EBIT;
       break;
 
     case RXO_btst:
@@ -682,6 +1067,7 @@ decode_opcode ()
 	mb &= 0x07;
       umb = ma & (1 << mb);
       set_zc (! umb, umb);
+      EBIT;
       break;
 
     case RXO_clrpsw:
@@ -691,6 +1077,7 @@ decode_opcode ()
 	      || v == FLAGBIT_U))
 	break;
       regs.r_psw &= ~v;
+      cycles (1);
       break;
 
     case RXO_div: /* d = d / s */
@@ -709,6 +1096,8 @@ decode_opcode ()
 	  set_flags (FLAGBIT_O, 0);
 	  PD (v);
 	}
+      /* Note: spec says 3 to 22 cycles, we are pessimistic.  */
+      cycles (22);
       break;
 
     case RXO_divu: /* d = d / s */
@@ -727,6 +1116,8 @@ decode_opcode ()
 	  set_flags (FLAGBIT_O, 0);
 	  PD (v);
 	}
+      /* Note: spec says 2 to 20 cycles, we are pessimistic.  */
+      cycles (20);
       break;
 
     case RXO_ediv:
@@ -748,6 +1139,8 @@ decode_opcode ()
 	  opcode.op[0].reg ++;
 	  PD (mb);
 	}
+      /* Note: spec says 3 to 22 cycles, we are pessimistic.  */
+      cycles (22);
       break;
 
     case RXO_edivu:
@@ -769,6 +1162,8 @@ decode_opcode ()
 	  opcode.op[0].reg ++;
 	  PD (umb);
 	}
+      /* Note: spec says 2 to 20 cycles, we are pessimistic.  */
+      cycles (20);
       break;
 
     case RXO_emul:
@@ -779,6 +1174,7 @@ decode_opcode ()
       PD (sll);
       opcode.op[0].reg ++;
       PD (sll >> 32);
+      E2;
       break;
 
     case RXO_emulu:
@@ -789,10 +1185,12 @@ decode_opcode ()
       PD (ll);
       opcode.op[0].reg ++;
       PD (ll >> 32);
+      E2;
       break;
 
     case RXO_fadd:
       FLOAT_OP (fadd);
+      E (4);
       break;
 
     case RXO_fcmp:
@@ -801,24 +1199,32 @@ decode_opcode ()
       FPCLEAR ();
       rxfp_cmp (ma, mb);
       FPCHECK ();
+      E (1);
       break;
 
     case RXO_fdiv:
       FLOAT_OP (fdiv);
+      E (16);
       break;
 
     case RXO_fmul:
       FLOAT_OP (fmul);
+      E (3);
       break;
 
     case RXO_rtfi:
       PRIVILEDGED ();
       regs.r_psw = regs.r_bpsw;
       regs.r_pc = regs.r_bpc;
+#ifdef CYCLE_ACCURATE
+      regs.fast_return = 0;
+      cycles(3);
+#endif
       break;
 
     case RXO_fsub:
       FLOAT_OP (fsub);
+      E (4);
       break;
 
     case RXO_ftoi:
@@ -829,6 +1235,7 @@ decode_opcode ()
       PD (mb);
       tprintf("(int) %g = %d\n", int2float(ma), mb);
       set_sz (mb, 4);
+      E (2);
       break;
 
     case RXO_int:
@@ -845,6 +1252,7 @@ decode_opcode ()
 	  pushpc (regs.r_pc);
 	  regs.r_pc = mem_get_si (regs.r_intb + 4 * v);
 	}
+      cycles (6);
       break;
 
     case RXO_itof:
@@ -855,49 +1263,87 @@ decode_opcode ()
       tprintf("(float) %d = %x\n", ma, mb);
       PD (mb);
       set_sz (ma, 4);
+      E (2);
       break;
 
     case RXO_jsr:
     case RXO_jsrrel:
-      v = GD ();
-      pushpc (get_reg (pc));
-      if (opcode.id == RXO_jsrrel)
-	v += regs.r_pc;
-      put_reg (pc, v);
+      {
+#ifdef CYCLE_ACCURATE
+	int delta;
+	regs.m2m = 0;
+#endif
+	v = GD ();
+#ifdef CYCLE_ACCURATE
+	regs.link_register = regs.r_pc;
+#endif
+	pushpc (get_reg (pc));
+	if (opcode.id == RXO_jsrrel)
+	  v += regs.r_pc;
+#ifdef CYCLE_ACCURATE
+	delta = v - regs.r_pc;
+#endif
+	put_reg (pc, v);
+#ifdef CYCLE_ACCURATE
+	/* Note: docs say 3, chip says 2 */
+	if (delta >= 0 && delta < 16)
+	  {
+	    tprintf ("near forward jsr bonus\n");
+	    cycles (2);
+	  }
+	else
+	  {
+	    branch_alignment_penalty = 1;
+	    cycles (3);
+	  }
+	regs.fast_return = 1;
+#endif
+      }
       break;
 
     case RXO_machi:
       ll = (long long)(signed short)(GS() >> 16) * (long long)(signed short)(GS2 () >> 16);
       ll <<= 16;
       put_reg64 (acc64, ll + regs.r_acc);
+      E1;
       break;
 
     case RXO_maclo:
       ll = (long long)(signed short)(GS()) * (long long)(signed short)(GS2 ());
       ll <<= 16;
       put_reg64 (acc64, ll + regs.r_acc);
+      E1;
       break;
 
     case RXO_max:
-      ma = GD();
       mb = GS();
+      ma = GD();
       if (ma > mb)
 	PD (ma);
       else
 	PD (mb);
+      E (1);
+#ifdef CYCLE_STATS
+      if (opcode.op[0].type == RX_Operand_Register
+	  && opcode.op[1].type == RX_Operand_Register
+	  && opcode.op[0].reg == opcode.op[1].reg)
+	opcode.id = RXO_nop3;
+#endif
       break;
 
     case RXO_min:
-      ma = GD();
       mb = GS();
+      ma = GD();
       if (ma < mb)
 	PD (ma);
       else
 	PD (mb);
+      E (1);
       break;
 
     case RXO_mov:
       v = GS ();
+
       if (opcode.op[0].type == RX_Operand_Register
 	  && opcode.op[0].reg == 16 /* PSW */)
 	{
@@ -927,8 +1373,32 @@ decode_opcode ()
 	    /* These are ignored.  */
 	    break;
 	}
+      if (OM(0) && OM(1))
+	cycles (2);
+      else
+	cycles (1);
+
       PD (v);
+
+#ifdef CYCLE_ACCURATE
+      if ((opcode.op[0].type == RX_Operand_Predec
+	   && opcode.op[1].type == RX_Operand_Register)
+	  || (opcode.op[0].type == RX_Operand_Postinc
+	      && opcode.op[1].type == RX_Operand_Register))
+	{
+	  /* Special case: push reg doesn't cause a memory stall.  */
+	  memory_dest = 0;
+	  tprintf("push special case\n");
+	}
+#endif
+
       set_sz (v, DSZ());
+#ifdef CYCLE_STATS
+      if (opcode.op[0].type == RX_Operand_Register
+	  && opcode.op[1].type == RX_Operand_Register
+	  && opcode.op[0].reg == opcode.op[1].reg)
+	opcode.id = RXO_nop2;
+#endif
       break;
 
     case RXO_movbi:
@@ -939,6 +1409,7 @@ decode_opcode ()
       opcode.op[1].type = RX_Operand_Indirect;
       opcode.op[1].addend = 0;
       PD (GS ());
+      cycles (1);
       break;
 
     case RXO_movbir:
@@ -949,51 +1420,65 @@ decode_opcode ()
       opcode.op[1].type = RX_Operand_Indirect;
       opcode.op[1].addend = 0;
       PS (GD ());
+      cycles (1);
       break;
 
     case RXO_mul:
-      ll = (unsigned long long) US1() * (unsigned long long) US2();
+      v = US2 ();
+      ll = (unsigned long long) US1() * (unsigned long long) v;
       PD(ll);
+      E (1);
       break;
 
     case RXO_mulhi:
-      ll = (long long)(signed short)(GS() >> 16) * (long long)(signed short)(GS2 () >> 16);
+      v = GS2 ();
+      ll = (long long)(signed short)(GS() >> 16) * (long long)(signed short)(v >> 16);
       ll <<= 16;
       put_reg64 (acc64, ll);
+      E1;
       break;
 
     case RXO_mullo:
-      ll = (long long)(signed short)(GS()) * (long long)(signed short)(GS2 ());
+      v = GS2 ();
+      ll = (long long)(signed short)(GS()) * (long long)(signed short)(v);
       ll <<= 16;
       put_reg64 (acc64, ll);
+      E1;
       break;
 
     case RXO_mvfachi:
       PD (get_reg (acchi));
+      E1;
       break;
 
     case RXO_mvfaclo:
       PD (get_reg (acclo));
+      E1;
       break;
 
     case RXO_mvfacmi:
       PD (get_reg (accmi));
+      E1;
       break;
 
     case RXO_mvtachi:
       put_reg (acchi, GS ());
+      E1;
       break;
 
     case RXO_mvtaclo:
       put_reg (acclo, GS ());
+      E1;
       break;
 
     case RXO_mvtipl:
       regs.r_psw &= ~ FLAGBITS_IPL;
       regs.r_psw |= (GS () << FLAGSHIFT_IPL) & FLAGBITS_IPL;
+      E1;
       break;
 
     case RXO_nop:
+      E1;
       break;
 
     case RXO_or:
@@ -1010,11 +1495,11 @@ decode_opcode ()
 	  return RX_MAKE_STOPPED (SIGILL);
 	}
       for (v = opcode.op[1].reg; v <= opcode.op[2].reg; v++)
-	put_reg (v, pop ());
-      break;
-
-    case RXO_pusha:
-      push (get_reg (opcode.op[1].reg) + opcode.op[1].addend);
+	{
+	  cycles (1);
+	  RLD (v);
+	  put_reg (v, pop ());
+	}
       break;
 
     case RXO_pushm:
@@ -1027,7 +1512,11 @@ decode_opcode ()
 	  return RX_MAKE_STOPPED (SIGILL);
 	}
       for (v = opcode.op[2].reg; v >= opcode.op[1].reg; v--)
-	push (get_reg (v));
+	{
+	  RL (v);
+	  push (get_reg (v));
+	}
+      cycles (opcode.op[2].reg - opcode.op[1].reg + 1);
       break;
 
     case RXO_racw:
@@ -1040,6 +1529,7 @@ decode_opcode ()
       else
 	ll &= 0xffffffff00000000ULL;
       put_reg64 (acc64, ll);
+      E1;
       break;
 
     case RXO_rte:
@@ -1048,6 +1538,10 @@ decode_opcode ()
       regs.r_psw = poppc ();
       if (FLAG_PM)
 	regs.r_psw |= FLAGBIT_U;
+#ifdef CYCLE_ACCURATE
+      regs.fast_return = 0;
+      cycles (6);
+#endif
       break;
 
     case RXO_revl:
@@ -1057,6 +1551,7 @@ decode_opcode ()
 	     | ((uma << 8) & 0xff0000)
 	     | ((uma << 24) & 0xff000000UL));
       PD (umb);
+      E1;
       break;
 
     case RXO_revw:
@@ -1064,9 +1559,16 @@ decode_opcode ()
       umb = (((uma >> 8) & 0x00ff00ff)
 	     | ((uma << 8) & 0xff00ff00UL));
       PD (umb);
+      E1;
       break;
 
     case RXO_rmpa:
+      RL(4);
+      RL(5);
+#ifdef CYCLE_ACCURATE
+      tx = regs.r[3];
+#endif
+
       while (regs.r[3] != 0)
 	{
 	  long long tmp;
@@ -1124,6 +1626,22 @@ decode_opcode ()
 	set_flags (FLAGBIT_O|FLAGBIT_S, ma | FLAGBIT_O);
       else
 	set_flags (FLAGBIT_O|FLAGBIT_S, ma);
+#ifdef CYCLE_ACCURATE
+      switch (opcode.size)
+	{
+	case RX_Long:
+	  cycles (6 + 4 * tx);
+	  break;
+	case RX_Word:
+	  cycles (6 + 5 * (tx / 2) + 4 * (tx % 2));
+	  break;
+	case RX_Byte:
+	  cycles (6 + 7 * (tx / 4) + 4 * (tx % 4));
+	  break;
+	default:
+	  abort ();
+	}
+#endif
       break;
 
     case RXO_rolc:
@@ -1133,6 +1651,7 @@ decode_opcode ()
       v |= carry;
       set_szc (v, 4, ma);
       PD (v);
+      E1;
       break;
 
     case RXO_rorc:
@@ -1142,6 +1661,7 @@ decode_opcode ()
       uma |= (carry ? 0x80000000UL : 0);
       set_szc (uma, 4, mb);
       PD (uma);
+      E1;
       break;
 
     case RXO_rotl:
@@ -1154,6 +1674,7 @@ decode_opcode ()
 	}
       set_szc (uma, 4, mb);
       PD (uma);
+      E1;
       break;
 
     case RXO_rotr:
@@ -1166,6 +1687,7 @@ decode_opcode ()
 	}
       set_szc (uma, 4, mb);
       PD (uma);
+      E1;
       break;
 
     case RXO_round:
@@ -1176,10 +1698,30 @@ decode_opcode ()
       PD (mb);
       tprintf("(int) %g = %d\n", int2float(ma), mb);
       set_sz (mb, 4);
+      E (2);
       break;
 
     case RXO_rts:
-      regs.r_pc = poppc ();
+      {
+#ifdef CYCLE_ACCURATE
+	int cyc = 5;
+#endif
+	regs.r_pc = poppc ();
+#ifdef CYCLE_ACCURATE
+	/* Note: specs say 5, chip says 3.  */
+	if (regs.fast_return && regs.link_register == regs.r_pc)
+	  {
+#ifdef CYCLE_STATS
+	    fast_returns ++;
+#endif
+	    tprintf("fast return bonus\n");
+	    cyc -= 2;
+	  }
+	cycles (cyc);
+	regs.fast_return = 0;
+	branch_alignment_penalty = 1;
+#endif
+      }
       break;
 
     case RXO_rtsd:
@@ -1190,12 +1732,39 @@ decode_opcode ()
 	  put_reg (0, get_reg (0) + GS() - (opcode.op[0].reg-opcode.op[2].reg+1)*4);
 	  if (opcode.op[2].reg == 0)
 	    EXCEPTION (EX_UNDEFINED);
+#ifdef CYCLE_ACCURATE
+	  tx = opcode.op[0].reg - opcode.op[2].reg + 1;
+#endif
 	  for (i = opcode.op[2].reg; i <= opcode.op[0].reg; i ++)
-	    put_reg (i, pop ());
+	    {
+	      RLD (i);
+	      put_reg (i, pop ());
+	    }
+	}
+      else
+	{
+#ifdef CYCLE_ACCURATE
+	  tx = 0;
+#endif
+	  put_reg (0, get_reg (0) + GS());
+	}
+      put_reg (pc, poppc());
+#ifdef CYCLE_ACCURATE
+      if (regs.fast_return && regs.link_register == regs.r_pc)
+	{
+	  tprintf("fast return bonus\n");
+#ifdef CYCLE_STATS
+	  fast_returns ++;
+#endif
+	  cycles (tx < 3 ? 3 : tx + 1);
 	}
       else
-	put_reg (0, get_reg (0) + GS());
-      put_reg (pc, poppc ());
+	{
+	  cycles (tx < 5 ? 5 : tx + 1);
+	}
+      regs.fast_return = 0;
+      branch_alignment_penalty = 1;
+#endif
       break;
 
     case RXO_sat:
@@ -1203,6 +1772,7 @@ decode_opcode ()
 	PD (0x7fffffffUL);
       else if (FLAG_O && ! FLAG_S)
 	PD (0x80000000UL);
+      E1;
       break;
 
     case RXO_sbb:
@@ -1214,9 +1784,13 @@ decode_opcode ()
 	PD (1);
       else
 	PD (0);
+      E1;
       break;
 
     case RXO_scmpu:
+#ifdef CYCLE_ACCURATE
+      tx = regs.r[3];
+#endif
       while (regs.r[3] != 0)
 	{
 	  uma = mem_get_qi (regs.r[1] ++);
@@ -1229,6 +1803,7 @@ decode_opcode ()
 	set_zc (1, 1);
       else
 	set_zc (0, ((int)uma - (int)umb) >= 0);
+      cycles (2 + 4 * (tx / 4) + 4 * (tx % 4));
       break;
 
     case RXO_setpsw:
@@ -1238,24 +1813,40 @@ decode_opcode ()
 	      || v == FLAGBIT_U))
 	break;
       regs.r_psw |= v;
+      cycles (1);
       break;
 
     case RXO_smovb:
+      RL (3);
+#ifdef CYCLE_ACCURATE
+      tx = regs.r[3];
+#endif
       while (regs.r[3])
 	{
 	  uma = mem_get_qi (regs.r[2] --);
 	  mem_put_qi (regs.r[1]--, uma);
 	  regs.r[3] --;
 	}
+#ifdef CYCLE_ACCURATE
+      if (tx > 3)
+	cycles (6 + 3 * (tx / 4) + 3 * (tx % 4));
+      else
+	cycles (2 + 3 * (tx % 4));
+#endif
       break;
 
     case RXO_smovf:
+      RL (3);
+#ifdef CYCLE_ACCURATE
+      tx = regs.r[3];
+#endif
       while (regs.r[3])
 	{
 	  uma = mem_get_qi (regs.r[2] ++);
 	  mem_put_qi (regs.r[1]++, uma);
 	  regs.r[3] --;
 	}
+      cycles (2 + 3 * (int)(tx / 4) + 3 * (tx % 4));
       break;
 
     case RXO_smovu:
@@ -1271,17 +1862,24 @@ decode_opcode ()
 
     case RXO_shar: /* d = ma >> mb */
       SHIFT_OP (sll, int, mb, >>=, 1);
+      E (1);
       break;
 
     case RXO_shll: /* d = ma << mb */
       SHIFT_OP (ll, int, mb, <<=, 0x80000000UL);
+      E (1);
       break;
 
     case RXO_shlr: /* d = ma >> mb */
       SHIFT_OP (ll, unsigned int, mb, >>=, 1);
+      E (1);
       break;
 
     case RXO_sstr:
+      RL (3);
+#ifdef CYCLE_ACCURATE
+      tx = regs.r[3];
+#endif
       switch (opcode.size)
 	{
 	case RX_Long:
@@ -1291,6 +1889,7 @@ decode_opcode ()
 	      regs.r[1] += 4;
 	      regs.r[3] --;
 	    }
+	  cycles (2 + tx);
 	  break;
 	case RX_Word:
 	  while (regs.r[3] != 0)
@@ -1299,6 +1898,7 @@ decode_opcode ()
 	      regs.r[1] += 2;
 	      regs.r[3] --;
 	    }
+	  cycles (2 + (int)(tx / 2) + tx % 2);
 	  break;
 	case RX_Byte:
 	  while (regs.r[3] != 0)
@@ -1307,6 +1907,7 @@ decode_opcode ()
 	      regs.r[1] ++;
 	      regs.r[3] --;
 	    }
+	  cycles (2 + (int)(tx / 4) + tx % 4);
 	  break;
 	default:
 	  abort ();
@@ -1316,6 +1917,7 @@ decode_opcode ()
     case RXO_stcc:
       if (GS2())
 	PD (GS ());
+      E1;
       break;
 
     case RXO_stop:
@@ -1328,8 +1930,15 @@ decode_opcode ()
       break;
 
     case RXO_suntil:
+      RL(3);
+#ifdef CYCLE_ACCURATE
+      tx = regs.r[3];
+#endif
       if (regs.r[3] == 0)
-	break;
+	{
+	  cycles (3);
+	  break;
+	}
       switch (opcode.size)
 	{
 	case RX_Long:
@@ -1342,6 +1951,7 @@ decode_opcode ()
 	      if (umb == uma)
 		break;
 	    }
+	  cycles (3 + 3 * tx);
 	  break;
 	case RX_Word:
 	  uma = get_reg (2) & 0xffff;
@@ -1353,6 +1963,7 @@ decode_opcode ()
 	      if (umb == uma)
 		break;
 	    }
+	  cycles (3 + 3 * (tx / 2) + 3 * (tx % 2));
 	  break;
 	case RX_Byte:
 	  uma = get_reg (2) & 0xff;
@@ -1364,6 +1975,7 @@ decode_opcode ()
 	      if (umb == uma)
 		break;
 	    }
+	  cycles (3 + 3 * (tx / 4) + 3 * (tx % 4));
 	  break;
 	default:
 	  abort();
@@ -1375,6 +1987,10 @@ decode_opcode ()
       break;
 
     case RXO_swhile:
+      RL(3);
+#ifdef CYCLE_ACCURATE
+      tx = regs.r[3];
+#endif
       if (regs.r[3] == 0)
 	break;
       switch (opcode.size)
@@ -1389,6 +2005,7 @@ decode_opcode ()
 	      if (umb != uma)
 		break;
 	    }
+	  cycles (3 + 3 * tx);
 	  break;
 	case RX_Word:
 	  uma = get_reg (2) & 0xffff;
@@ -1400,6 +2017,7 @@ decode_opcode ()
 	      if (umb != uma)
 		break;
 	    }
+	  cycles (3 + 3 * (tx / 2) + 3 * (tx % 2));
 	  break;
 	case RX_Byte:
 	  uma = get_reg (2) & 0xff;
@@ -1411,6 +2029,7 @@ decode_opcode ()
 	      if (umb != uma)
 		break;
 	    }
+	  cycles (3 + 3 * (tx / 4) + 3 * (tx % 4));
 	  break;
 	default:
 	  abort();
@@ -1427,9 +2046,18 @@ decode_opcode ()
       return RX_MAKE_STOPPED(0);
 
     case RXO_xchg:
+#ifdef CYCLE_ACCURATE
+      regs.m2m = 0;
+#endif
       v = GS (); /* This is the memory operand, if any.  */
       PS (GD ()); /* and this may change the address register.  */
       PD (v);
+      E2;
+#ifdef CYCLE_ACCURATE
+      /* all M cycles happen during xchg's cycles.  */
+      memory_dest = 0;
+      memory_source = 0;
+#endif
       break;
 
     case RXO_xor:
@@ -1440,5 +2068,122 @@ decode_opcode ()
       EXCEPTION (EX_UNDEFINED);
     }
 
+#ifdef CYCLE_ACCURATE
+  regs.m2m = 0;
+  if (memory_source)
+    regs.m2m |= M2M_SRC;
+  if (memory_dest)
+    regs.m2m |= M2M_DST;
+
+  regs.rt = new_rt;
+  new_rt = -1;
+#endif
+
+#ifdef CYCLE_STATS
+  if (prev_cycle_count == regs.cycle_count)
+    {
+      printf("Cycle count not updated! id %s\n", id_names[opcode.id]);
+      abort ();
+    }
+#endif
+
+#ifdef CYCLE_STATS
+  if (running_benchmark)
+    {
+      int omap = op_lookup (opcode.op[0].type, opcode.op[1].type, opcode.op[2].type);
+
+
+      cycles_per_id[opcode.id][omap] += regs.cycle_count - prev_cycle_count;
+      times_per_id[opcode.id][omap] ++;
+
+      times_per_pair[prev_opcode_id][po0][opcode.id][omap] ++;
+
+      prev_opcode_id = opcode.id;
+      po0 = omap;
+    }
+#endif
+
   return RX_MAKE_STEPPED ();
 }
+
+#ifdef CYCLE_STATS
+void
+reset_pipeline_stats (void)
+{
+  memset (cycles_per_id, 0, sizeof(cycles_per_id));
+  memset (times_per_id, 0, sizeof(times_per_id));
+  memory_stalls = 0;
+  register_stalls = 0;
+  branch_stalls = 0;
+  branch_alignment_stalls = 0;
+  fast_returns = 0;
+  memset (times_per_pair, 0, sizeof(times_per_pair));
+  running_benchmark = 1;
+
+  benchmark_start_cycle = regs.cycle_count;
+}
+
+void
+halt_pipeline_stats (void)
+{
+  running_benchmark = 0;
+  benchmark_end_cycle = regs.cycle_count;
+}
+#endif
+
+void
+pipeline_stats (void)
+{
+#ifdef CYCLE_STATS
+  int i, o1;
+  int p, p1;
+#endif
+
+#ifdef CYCLE_ACCURATE
+  if (verbose == 1)
+    {
+      printf ("cycles: %llu\n", regs.cycle_count);
+      return;
+    }
+
+  printf ("cycles: %13s\n", comma (regs.cycle_count));
+#endif
+
+#ifdef CYCLE_STATS
+  if (benchmark_start_cycle)
+    printf ("bmark:  %13s\n", comma (benchmark_end_cycle - benchmark_start_cycle));
+
+  printf("\n");
+  for (i = 0; i < N_RXO; i++)
+    for (o1 = 0; o1 < N_MAP; o1 ++)
+      if (times_per_id[i][o1])
+	printf("%13s %13s %7.2f  %s %s\n",
+	       comma (cycles_per_id[i][o1]),
+	       comma (times_per_id[i][o1]),
+	       (double)cycles_per_id[i][o1] / times_per_id[i][o1],
+	       op_cache_string(o1),
+	       id_names[i]+4);
+
+  printf("\n");
+  for (p = 0; p < N_RXO; p ++)
+    for (p1 = 0; p1 < N_MAP; p1 ++)
+      for (i = 0; i < N_RXO; i ++)
+	for (o1 = 0; o1 < N_MAP; o1 ++)
+	  if (times_per_pair[p][p1][i][o1])
+	    {
+	      printf("%13s   %s %-9s  ->  %s %s\n",
+		     comma (times_per_pair[p][p1][i][o1]),
+		     op_cache_string(p1),
+		     id_names[p]+4,
+		     op_cache_string(o1),
+		     id_names[i]+4);
+	    }
+
+  printf("\n");
+  printf("%13s memory stalls\n", comma (memory_stalls));
+  printf("%13s register stalls\n", comma (register_stalls));
+  printf("%13s branches taken (non-return)\n", comma (branch_stalls));
+  printf("%13s branch alignment stalls\n", comma (branch_alignment_stalls));
+  printf("%13s fast returns\n", comma (fast_returns));
+#endif
+}
diff --git a/sim/rx/trace.c b/sim/rx/trace.c
index cab05ff..add37ea 100644
--- a/sim/rx/trace.c
+++ b/sim/rx/trace.c
@@ -19,6 +19,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 
+#include "config.h"
 #include <stdio.h>
 #include <stdarg.h>
 #include <string.h>
@@ -321,7 +322,13 @@ sim_disasm_one (void)
     }
 
   opbuf[0] = 0;
-  printf ("\033[33m%06x: ", mypc);
+#ifdef CYCLE_ACCURATE
+  printf ("\033[33m %04u %06x: ", (int)(regs.cycle_count % 10000), mypc);
+#else
+  printf ("\033[33m %06x: ", mypc);
+
+#endif
+
   max = print_insn_rx (mypc, & info);
 
   for (i = 0; i < max; i++)