Make simulated loads/stores faster on x86, AIX, and big endian hosts
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2 changed files with 24 additions and 0 deletions
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@ -1,3 +1,15 @@
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Thu Oct 17 12:24:16 1996 Michael Meissner <meissner@tiktok.cygnus.com>
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* endian.c: Optimize simulated loads/stores on x86, AIX, and big
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endian hosts.
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* configure.in (--enable-sim-bswap): New switch to enable using
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the BSWAP instruction on x86's.
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* configure: Regenerate.
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* Makefile.in ({SWAP,CONFIG}_CFLAGS): Add --enable-sim-bswap
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support.
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Wed Oct 16 13:50:06 1996 Michael Meissner <meissner@tiktok.cygnus.com>
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Wed Oct 16 13:50:06 1996 Michael Meissner <meissner@tiktok.cygnus.com>
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* endian.c: New file. Move endian functions here from interp.c.
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* endian.c: New file. Move endian functions here from interp.c.
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@ -42,6 +42,17 @@ if test x"$silent" != x"yes" && test x"$sim_debug" != x""; then
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echo "Setting sim debug = $sim_debug" 6>&1
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echo "Setting sim debug = $sim_debug" 6>&1
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fi],[sim_cflags=""])dnl
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fi],[sim_cflags=""])dnl
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AC_ARG_ENABLE(sim-bswap,
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[ --enable-sim-bswap Use the BSWAP instruction on Intel 486s and Pentiums.],
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[case "${enableval}" in
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yes) sim_bswap="-DUSE_BSWAP";;
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no) sim_bswap="";;
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*) AC_MSG_ERROR("--enable-sim-bswap does not take a value"); sim_bswap="";;
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esac
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if test x"$silent" != x"yes" && test x"$sim_bswap" != x""; then
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echo "Setting bswap flags = $sim_bswap" 6>&1
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fi],[sim_bswap=""])dnl
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AC_SUBST(CC_FOR_BUILD)
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AC_SUBST(CC_FOR_BUILD)
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AC_SUBST(CFLAGS)
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AC_SUBST(CFLAGS)
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AC_SUBST(HDEFINES)
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AC_SUBST(HDEFINES)
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@ -50,6 +61,7 @@ AC_SUBST(AR)
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AC_PROG_RANLIB
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AC_PROG_RANLIB
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AC_SUBST(sim_cflags)
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AC_SUBST(sim_cflags)
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AC_SUBST(sim_debug)
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AC_SUBST(sim_debug)
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AC_SUBST(sim_bswap)
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# Put a plausible default for CC_FOR_BUILD in Makefile.
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# Put a plausible default for CC_FOR_BUILD in Makefile.
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AC_C_CROSS
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AC_C_CROSS
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