From: Michael Meissner <gnu@the-meissners.org>
Date: Thu, 17 Oct 1996 16:47:51 +0000 (+0000)
Subject: Make simulated loads/stores faster on x86, AIX, and big endian hosts
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=55116079e2a539d3fe36b7ab8f5ab4932acb74c0;p=binutils-gdb.git

Make simulated loads/stores faster on x86, AIX, and big endian hosts
---

diff --git a/sim/d10v/ChangeLog b/sim/d10v/ChangeLog
index fe621e33369..95b2690c065 100644
--- a/sim/d10v/ChangeLog
+++ b/sim/d10v/ChangeLog
@@ -1,3 +1,15 @@
+Thu Oct 17 12:24:16 1996  Michael Meissner  <meissner@tiktok.cygnus.com>
+
+	* endian.c: Optimize simulated loads/stores on x86, AIX, and big
+	endian hosts.
+
+	* configure.in (--enable-sim-bswap): New switch to enable using
+	the BSWAP instruction on x86's.
+	* configure: Regenerate.
+
+	* Makefile.in ({SWAP,CONFIG}_CFLAGS): Add --enable-sim-bswap
+	support.
+
 Wed Oct 16 13:50:06 1996  Michael Meissner  <meissner@tiktok.cygnus.com>
 
 	* endian.c: New file.  Move endian functions here from interp.c.
diff --git a/sim/d10v/configure.in b/sim/d10v/configure.in
index cc9c4ad4951..d260088e18f 100644
--- a/sim/d10v/configure.in
+++ b/sim/d10v/configure.in
@@ -42,6 +42,17 @@ if test x"$silent" != x"yes" && test x"$sim_debug" != x""; then
   echo "Setting sim debug = $sim_debug" 6>&1
 fi],[sim_cflags=""])dnl
 
+AC_ARG_ENABLE(sim-bswap,
+[  --enable-sim-bswap			Use the BSWAP instruction on Intel 486s and Pentiums.],
+[case "${enableval}" in
+  yes)	sim_bswap="-DUSE_BSWAP";;
+  no)	sim_bswap="";;
+  *)	AC_MSG_ERROR("--enable-sim-bswap does not take a value"); sim_bswap="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_bswap" != x""; then
+  echo "Setting bswap flags = $sim_bswap" 6>&1
+fi],[sim_bswap=""])dnl
+
 AC_SUBST(CC_FOR_BUILD)
 AC_SUBST(CFLAGS)
 AC_SUBST(HDEFINES)
@@ -50,6 +61,7 @@ AC_SUBST(AR)
 AC_PROG_RANLIB
 AC_SUBST(sim_cflags)
 AC_SUBST(sim_debug)
+AC_SUBST(sim_bswap)
 
 # Put a plausible default for CC_FOR_BUILD in Makefile.
 AC_C_CROSS