From c64688ae797cb3ed06f9403cd20cfc51e0b6276a Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Mon, 14 May 2001 18:45:10 -0700 Subject: [PATCH] configure.in (gcc_cv_as_eh_frame): New test. * configure.in (gcc_cv_as_eh_frame): New test. * config.in, configure: Rebuild. * gcc.c (init_spec): Honor USE_AS_TRADITIONAL_FORMAT. From-SVN: r42092 --- gcc/ChangeLog | 6 ++++ gcc/config.in | 3 ++ gcc/configure | 90 +++++++++++++++++++++++++++++++++++++++++++----- gcc/configure.in | 71 ++++++++++++++++++++++++++++++++++++++ gcc/gcc.c | 9 +++++ 5 files changed, 171 insertions(+), 8 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d647fd46542..50b2de502b8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2001-05-14 Richard Henderson + + * configure.in (gcc_cv_as_eh_frame): New test. + * config.in, configure: Rebuild. + * gcc.c (init_spec): Honor USE_AS_TRADITIONAL_FORMAT. + 2001-05-14 Andrew MacLeod * config/ia64/lib1funcs.asm (__divtf3): Fix incorrect bits in diff --git a/gcc/config.in b/gcc/config.in index 60c7b539843..50cefde2327 100644 --- a/gcc/config.in +++ b/gcc/config.in @@ -469,6 +469,9 @@ /* Define if your assembler supports .uleb128. */ #undef HAVE_AS_LEB128 +/* Define if your assembler mis-optimizes .eh_frame data. */ +#undef USE_AS_TRADITIONAL_FORMAT + /* Define if your assembler supports .register. */ #undef HAVE_AS_REGISTER_PSEUDO_OP diff --git a/gcc/configure b/gcc/configure index 8cb673478c9..84f8abd2ffb 100755 --- a/gcc/configure +++ b/gcc/configure @@ -2018,7 +2018,7 @@ EOF fi # Find some useful tools -for ac_prog in mawk gawk nawk awk +for ac_prog in gawk mawk nawk awk do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 @@ -6888,10 +6888,84 @@ EOF fi echo "$ac_t""$gcc_cv_as_leb128" 1>&6 +echo $ac_n "checking assembler eh_frame optimization""... $ac_c" 1>&6 +echo "configure:6893: checking assembler eh_frame optimization" >&5 +gcc_cv_as_eh_frame=no +if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then + if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 12 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then + gcc_cv_as_eh_frame="yes" + fi +elif test x$gcc_cv_as != x; then + # Check if this is GAS. + as_ver=`$gcc_cv_as --version 2>/dev/null | head -1` + if echo "$as_ver" | grep GNU > /dev/null; then + # Versions up to and including 2.11.0 may mis-optimize + # .eh_frame data. Try something. + cat > conftest.s < conftest.exp < /dev/null 2>&1 \ + && objdump -s -j .eh_frame conftest.o 2>/dev/null \ + | tail -3 > conftest.got \ + && cmp conftest.exp conftest.got > /dev/null 2>&1 + then + gcc_cv_as_eh_frame="yes" + else + gcc_cv_as_eh_frame="bad" + if $gcc_cv_as -o conftest.o --traditional-format /dev/null; then + cat >> confdefs.h <<\EOF +#define USE_AS_TRADITIONAL_FORMAT 1 +EOF + + fi + fi + fi + rm -f conftest.* +fi +echo "$ac_t""$gcc_cv_as_eh_frame" 1>&6 + case "$target" in sparc*-*-*) echo $ac_n "checking assembler .register pseudo-op support""... $ac_c" 1>&6 -echo "configure:6895: checking assembler .register pseudo-op support" >&5 +echo "configure:6969: checking assembler .register pseudo-op support" >&5 if eval "test \"`echo '$''{'gcc_cv_as_register_pseudo_op'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else @@ -6919,7 +6993,7 @@ EOF fi echo $ac_n "checking assembler supports -relax""... $ac_c" 1>&6 -echo "configure:6923: checking assembler supports -relax" >&5 +echo "configure:6997: checking assembler supports -relax" >&5 if eval "test \"`echo '$''{'gcc_cv_as_relax_opt'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else @@ -6949,7 +7023,7 @@ EOF case "$tm_file" in *64*) echo $ac_n "checking for 64 bit support in assembler ($gcc_cv_as)""... $ac_c" 1>&6 -echo "configure:6953: checking for 64 bit support in assembler ($gcc_cv_as)" >&5 +echo "configure:7027: checking for 64 bit support in assembler ($gcc_cv_as)" >&5 if eval "test \"`echo '$''{'gcc_cv_as_flags64'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else @@ -6994,7 +7068,7 @@ EOF if test "x$gcc_cv_as_flags64" != xno; then echo $ac_n "checking for assembler offsetable %lo() support""... $ac_c" 1>&6 -echo "configure:6998: checking for assembler offsetable %lo() support" >&5 +echo "configure:7072: checking for assembler offsetable %lo() support" >&5 if eval "test \"`echo '$''{'gcc_cv_as_offsetable_lo10'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else @@ -7033,7 +7107,7 @@ EOF i[34567]86-*-*) echo $ac_n "checking assembler instructions""... $ac_c" 1>&6 -echo "configure:7037: checking assembler instructions" >&5 +echo "configure:7111: checking assembler instructions" >&5 gcc_cv_as_instructions= if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2; then @@ -7062,7 +7136,7 @@ EOF esac echo $ac_n "checking assembler dwarf2 debug_line support""... $ac_c" 1>&6 -echo "configure:7066: checking assembler dwarf2 debug_line support" >&5 +echo "configure:7140: checking assembler dwarf2 debug_line support" >&5 gcc_cv_as_dwarf2_debug_line=no # ??? Not all targets support dwarf2 debug_line, even within a version # of gas. Moreover, we need to emit a valid instruction to trigger any @@ -7247,7 +7321,7 @@ fi echo $ac_n "checking whether to enable maintainer-specific portions of Makefiles""... $ac_c" 1>&6 -echo "configure:7251: checking whether to enable maintainer-specific portions of Makefiles" >&5 +echo "configure:7325: checking whether to enable maintainer-specific portions of Makefiles" >&5 # Check whether --enable-maintainer-mode or --disable-maintainer-mode was given. if test "${enable_maintainer_mode+set}" = set; then enableval="$enable_maintainer_mode" diff --git a/gcc/configure.in b/gcc/configure.in index 8b4d9927a6b..313a3f504f1 100644 --- a/gcc/configure.in +++ b/gcc/configure.in @@ -1410,6 +1410,77 @@ if test x"$gcc_cv_as_leb128" = xyes; then fi AC_MSG_RESULT($gcc_cv_as_leb128) +AC_MSG_CHECKING(assembler eh_frame optimization) +gcc_cv_as_eh_frame=no +if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then + if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 12 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then + gcc_cv_as_eh_frame="yes" + fi +elif test x$gcc_cv_as != x; then + # Check if this is GAS. + as_ver=`$gcc_cv_as --version 2>/dev/null | head -1` + if echo "$as_ver" | grep GNU > /dev/null; then + # Versions up to and including 2.11.0 may mis-optimize + # .eh_frame data. Try something. + cat > conftest.s < conftest.exp < /dev/null 2>&1 \ + && objdump -s -j .eh_frame conftest.o 2>/dev/null \ + | tail -3 > conftest.got \ + && cmp conftest.exp conftest.got > /dev/null 2>&1 + then + gcc_cv_as_eh_frame="yes" + else + gcc_cv_as_eh_frame="bad" + if $gcc_cv_as -o conftest.o --traditional-format /dev/null; then + AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, + [Define if your assembler mis-optimizes .eh_frame data.]) + fi + fi + fi + rm -f conftest.* +fi +AC_MSG_RESULT($gcc_cv_as_eh_frame) + case "$target" in sparc*-*-*) AC_CACHE_CHECK([assembler .register pseudo-op support], diff --git a/gcc/gcc.c b/gcc/gcc.c index 1ba86eebc9d..d92f56a4593 100644 --- a/gcc/gcc.c +++ b/gcc/gcc.c @@ -1454,6 +1454,15 @@ init_spec () libgcc_spec = obstack_finish (&obstack); } #endif +#ifdef USE_AS_TRADITIONAL_FORMAT + /* Prepend "--traditional-format" to whatever asm_spec we had before. */ + { + static char tf[] = "--traditional-format "; + obstack_grow (&obstack, tf, sizeof(tf) - 1); + obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); + asm_spec = obstack_finish (&obstack); + } +#endif specs = sl; }