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sim: punt x86-specific bswap logic

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The compiler/C library should produce reasonable code for htonl/ntohl,
and at least glibc tries pretty hard to always produce good code for
them.  This logic only had support for 32-bit x86 systems anymore, and
it's unlikely people were even opting into this, so drop it all.
This commit is contained in:
Mike Frysinger
2016-01-04 04:06:01 -05:00
parent 13adda68c5
commit 9bbf6f91c6
68 changed files with 187 additions and 699 deletions
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9
sim/common/ChangeLog
View File

@@ -1,3 +1,12 @@
2016-01-04 Mike Frysinger <vapier@gentoo.org>
* acinclude.m4 (sim-bswap): Delete.
* configure: Regenerate.
* Make-common.in (SIM_BSWAP): Delete.
(CONFIG_CFLAGS): Delete $(SIM_BSWAP).
* sim-config.h (htonl, ntohl): Delete.
(WITH_BSWAP): Delete.
2016-01-03 Mike Frysinger <vapier@gentoo.org>
* sim-options.c (sim_parse_args): Declare local save_opterr. Save

2
sim/common/Make-common.in
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@@ -75,7 +75,6 @@ CFLAGS = @CFLAGS@
CPPFLAGS = @CPPFLAGS@
CXXFLAGS = @CXXFLAGS@
LDFLAGS = @LDFLAGS@
SIM_BSWAP = @sim_bswap@
SIM_CFLAGS = @sim_cflags@
SIM_DEBUG = @sim_debug@
SIM_TRACE = @sim_trace@
@@ -234,7 +233,6 @@ CONFIG_CFLAGS = \
$(SIM_DEFAULT_MODEL) \
$(SIM_TRACE) \
$(SIM_PROFILE) \
$(SIM_BSWAP) \
$(SIM_ASSERT) \
$(SIM_ALIGNMENT) \
$(SIM_BITSIZE) \

15
sim/common/acinclude.m4
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@@ -117,21 +117,6 @@ dnl --enable-maintainer-mode.
AM_MAINTAINER_MODE
dnl This is a generic option to enable special byte swapping
dnl insns on *any* cpu.
AC_ARG_ENABLE(sim-bswap,
[AS_HELP_STRING([--enable-sim-bswap], [Use Host specific BSWAP instruction])],
[case "${enableval}" in
yes) sim_bswap="-DWITH_BSWAP=1 -DUSE_BSWAP=1";;
no) sim_bswap="-DWITH_BSWAP=0";;
*) AC_MSG_ERROR("--enable-sim-bswap does not take a value"); sim_bswap="";;
esac
if test x"$silent" != x"yes" && test x"$sim_bswap" != x""; then
echo "Setting bswap flags = $sim_bswap" 6>&1
fi],[sim_bswap=""])dnl
AC_SUBST(sim_bswap)
AC_ARG_ENABLE(sim-cflags,
[AS_HELP_STRING([--enable-sim-cflags=opts],
[Extra CFLAGS for use in building simulator])],

23
sim/common/configure vendored
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@@ -610,7 +610,6 @@ sim_trace
sim_stdio
sim_debug
sim_cflags
sim_bswap
MAINT
MAINTAINER_MODE_FALSE
MAINTAINER_MODE_TRUE
@@ -753,7 +752,6 @@ enable_fast_install
with_gnu_ld
enable_libtool_lock
enable_maintainer_mode
enable_sim_bswap
enable_sim_cflags
enable_sim_debug
enable_sim_stdio
@@ -1397,7 +1395,6 @@ Optional Features:
--disable-libtool-lock avoid locking (might break parallel builds)
--enable-maintainer-mode enable make rules and dependencies not useful
(and sometimes confusing) to the casual installer
--enable-sim-bswap Use Host specific BSWAP instruction
--enable-sim-cflags=opts
Extra CFLAGS for use in building simulator
--enable-sim-debug=opts Enable debugging flags (for developers of the sim
@@ -10785,7 +10782,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 10788 "configure"
#line 10785 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -10891,7 +10888,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 10894 "configure"
#line 10891 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -11159,22 +11156,6 @@ fi
# Check whether --enable-sim-bswap was given.
if test "${enable_sim_bswap+set}" = set; then :
enableval=$enable_sim_bswap; case "${enableval}" in
yes) sim_bswap="-DWITH_BSWAP=1 -DUSE_BSWAP=1";;
no) sim_bswap="-DWITH_BSWAP=0";;
*) as_fn_error "\"--enable-sim-bswap does not take a value\"" "$LINENO" 5; sim_bswap="";;
esac
if test x"$silent" != x"yes" && test x"$sim_bswap" != x""; then
echo "Setting bswap flags = $sim_bswap" 6>&1
fi
else
sim_bswap=""
fi
# Check whether --enable-sim-cflags was given.
if test "${enable_sim_cflags+set}" = set; then :
enableval=$enable_sim_cflags; case "${enableval}" in

18
sim/common/sim-config.h
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@@ -40,13 +40,7 @@
# define HOST_BYTE_ORDER BFD_ENDIAN_LITTLE
#endif
#if (defined (__i486__) || defined (__i586__) || defined (__i686__)) && defined(__GNUC__) && WITH_BSWAP
#undef htonl
#undef ntohl
#define htonl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
#define ntohl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
#endif
/* Until devices and tree properties are sorted out, tell sim-config.c
not to call the tree_find_foo fns. */
#define WITH_TREE_PROPERTIES 0
@@ -86,16 +80,6 @@ extern enum bfd_endian current_target_byte_order;
/* Intel host BSWAP support:
Whether to use bswap on the 486 and pentiums rather than the 386
sequence that uses xchgb/rorl/xchgb */
#ifndef WITH_BSWAP
#define WITH_BSWAP 0
#endif
/* SMP support:
Sets a limit on the number of processors that can be simulated. If