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
This commit is contained in:
Richard Henderson
Richard Henderson
parent
e8b073c1bd
commit
c64688ae79
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@ -1,3 +1,9 @@
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2001-05-14 Richard Henderson <rth@redhat.com>
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* configure.in (gcc_cv_as_eh_frame): New test.
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* config.in, configure: Rebuild.
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* gcc.c (init_spec): Honor USE_AS_TRADITIONAL_FORMAT.
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2001-05-14 Andrew MacLeod <amacleod@redhat.com>
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* config/ia64/lib1funcs.asm (__divtf3): Fix incorrect bits in
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@ -469,6 +469,9 @@
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/* Define if your assembler supports .uleb128. */
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#undef HAVE_AS_LEB128
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/* Define if your assembler mis-optimizes .eh_frame data. */
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#undef USE_AS_TRADITIONAL_FORMAT
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/* Define if your assembler supports .register. */
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#undef HAVE_AS_REGISTER_PSEUDO_OP
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@ -2018,7 +2018,7 @@ EOF
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fi
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# Find some useful tools
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for ac_prog in mawk gawk nawk awk
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for ac_prog in gawk mawk nawk awk
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do
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# Extract the first word of "$ac_prog", so it can be a program name with args.
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set dummy $ac_prog; ac_word=$2
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@ -6888,10 +6888,84 @@ EOF
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fi
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echo "$ac_t""$gcc_cv_as_leb128" 1>&6
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echo $ac_n "checking assembler eh_frame optimization""... $ac_c" 1>&6
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echo "configure:6893: checking assembler eh_frame optimization" >&5
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gcc_cv_as_eh_frame=no
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if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
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if test "$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
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gcc_cv_as_eh_frame="yes"
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fi
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elif test x$gcc_cv_as != x; then
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# Check if this is GAS.
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as_ver=`$gcc_cv_as --version 2>/dev/null | head -1`
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if echo "$as_ver" | grep GNU > /dev/null; then
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# Versions up to and including 2.11.0 may mis-optimize
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# .eh_frame data. Try something.
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cat > conftest.s <<EOF
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.text
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.LFB1:
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.4byte 0
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.L1:
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.4byte 0
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.LFE1:
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.section .eh_frame,"aw",@progbits
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__FRAME_BEGIN__:
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.4byte .LECIE1-.LSCIE1
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.LSCIE1:
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.4byte 0x0
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.byte 0x1
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.ascii "z\0"
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.byte 0x1
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.byte 0x78
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.byte 0x1a
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.byte 0x0
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.byte 0x4
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.4byte 1
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.p2align 1
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.LECIE1:
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.LSFDE1:
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.4byte .LEFDE1-.LASFDE1
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.LASFDE1:
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.4byte .LASFDE1-__FRAME_BEGIN__
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.4byte .LFB1
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.4byte .LFE1-.LFB1
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.byte 0x4
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.4byte .LFE1-.LFB1
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.byte 0x4
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.4byte .L1-.LFB1
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.LEFDE1:
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EOF
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cat > conftest.exp <<EOF
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0000 10000000 00000000 017a0001 781a0004 .........z..x...
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0010 01000000 12000000 18000000 00000000 ................
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0020 08000000 04080000 0044 .........D
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EOF
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# If the assembler didn't choke, and we can objdump,
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# and we got the correct data, then succeed.
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if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
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&& objdump -s -j .eh_frame conftest.o 2>/dev/null \
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| tail -3 > conftest.got \
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&& cmp conftest.exp conftest.got > /dev/null 2>&1
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then
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gcc_cv_as_eh_frame="yes"
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else
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gcc_cv_as_eh_frame="bad"
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if $gcc_cv_as -o conftest.o --traditional-format /dev/null; then
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cat >> confdefs.h <<\EOF
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#define USE_AS_TRADITIONAL_FORMAT 1
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EOF
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fi
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fi
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fi
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rm -f conftest.*
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fi
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echo "$ac_t""$gcc_cv_as_eh_frame" 1>&6
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case "$target" in
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sparc*-*-*)
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echo $ac_n "checking assembler .register pseudo-op support""... $ac_c" 1>&6
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echo "configure:6895: checking assembler .register pseudo-op support" >&5
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echo "configure:6969: checking assembler .register pseudo-op support" >&5
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if eval "test \"`echo '$''{'gcc_cv_as_register_pseudo_op'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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@ -6919,7 +6993,7 @@ EOF
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fi
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echo $ac_n "checking assembler supports -relax""... $ac_c" 1>&6
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echo "configure:6923: checking assembler supports -relax" >&5
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echo "configure:6997: checking assembler supports -relax" >&5
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if eval "test \"`echo '$''{'gcc_cv_as_relax_opt'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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@ -6949,7 +7023,7 @@ EOF
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case "$tm_file" in
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*64*)
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echo $ac_n "checking for 64 bit support in assembler ($gcc_cv_as)""... $ac_c" 1>&6
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echo "configure:6953: checking for 64 bit support in assembler ($gcc_cv_as)" >&5
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echo "configure:7027: checking for 64 bit support in assembler ($gcc_cv_as)" >&5
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if eval "test \"`echo '$''{'gcc_cv_as_flags64'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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@ -6994,7 +7068,7 @@ EOF
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if test "x$gcc_cv_as_flags64" != xno; then
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echo $ac_n "checking for assembler offsetable %lo() support""... $ac_c" 1>&6
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echo "configure:6998: checking for assembler offsetable %lo() support" >&5
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echo "configure:7072: checking for assembler offsetable %lo() support" >&5
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if eval "test \"`echo '$''{'gcc_cv_as_offsetable_lo10'+set}'`\" = set"; then
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echo $ac_n "(cached) $ac_c" 1>&6
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else
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@ -7033,7 +7107,7 @@ EOF
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i[34567]86-*-*)
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echo $ac_n "checking assembler instructions""... $ac_c" 1>&6
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echo "configure:7037: checking assembler instructions" >&5
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echo "configure:7111: checking assembler instructions" >&5
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gcc_cv_as_instructions=
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if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
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if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2; then
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@ -7062,7 +7136,7 @@ EOF
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esac
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echo $ac_n "checking assembler dwarf2 debug_line support""... $ac_c" 1>&6
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echo "configure:7066: checking assembler dwarf2 debug_line support" >&5
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echo "configure:7140: checking assembler dwarf2 debug_line support" >&5
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gcc_cv_as_dwarf2_debug_line=no
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# ??? Not all targets support dwarf2 debug_line, even within a version
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# of gas. Moreover, we need to emit a valid instruction to trigger any
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@ -7247,7 +7321,7 @@ fi
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echo $ac_n "checking whether to enable maintainer-specific portions of Makefiles""... $ac_c" 1>&6
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echo "configure:7251: checking whether to enable maintainer-specific portions of Makefiles" >&5
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echo "configure:7325: checking whether to enable maintainer-specific portions of Makefiles" >&5
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# Check whether --enable-maintainer-mode or --disable-maintainer-mode was given.
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if test "${enable_maintainer_mode+set}" = set; then
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enableval="$enable_maintainer_mode"
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@ -1410,6 +1410,77 @@ if test x"$gcc_cv_as_leb128" = xyes; then
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fi
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AC_MSG_RESULT($gcc_cv_as_leb128)
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AC_MSG_CHECKING(assembler eh_frame optimization)
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gcc_cv_as_eh_frame=no
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if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
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if test "$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
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gcc_cv_as_eh_frame="yes"
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fi
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elif test x$gcc_cv_as != x; then
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# Check if this is GAS.
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as_ver=`$gcc_cv_as --version 2>/dev/null | head -1`
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if echo "$as_ver" | grep GNU > /dev/null; then
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# Versions up to and including 2.11.0 may mis-optimize
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# .eh_frame data. Try something.
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cat > conftest.s <<EOF
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.text
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.LFB1:
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.4byte 0
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.L1:
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.4byte 0
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.LFE1:
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.section .eh_frame,"aw",@progbits
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__FRAME_BEGIN__:
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.4byte .LECIE1-.LSCIE1
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.LSCIE1:
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.4byte 0x0
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.byte 0x1
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.ascii "z\0"
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.byte 0x1
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.byte 0x78
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.byte 0x1a
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.byte 0x0
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.byte 0x4
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.4byte 1
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.p2align 1
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.LECIE1:
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.LSFDE1:
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.4byte .LEFDE1-.LASFDE1
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.LASFDE1:
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.4byte .LASFDE1-__FRAME_BEGIN__
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.4byte .LFB1
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.4byte .LFE1-.LFB1
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.byte 0x4
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.4byte .LFE1-.LFB1
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.byte 0x4
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.4byte .L1-.LFB1
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.LEFDE1:
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EOF
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cat > conftest.exp <<EOF
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0000 10000000 00000000 017a0001 781a0004 .........z..x...
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0010 01000000 12000000 18000000 00000000 ................
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0020 08000000 04080000 0044 .........D
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EOF
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# If the assembler didn't choke, and we can objdump,
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# and we got the correct data, then succeed.
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if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
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&& objdump -s -j .eh_frame conftest.o 2>/dev/null \
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| tail -3 > conftest.got \
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&& cmp conftest.exp conftest.got > /dev/null 2>&1
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then
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gcc_cv_as_eh_frame="yes"
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else
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gcc_cv_as_eh_frame="bad"
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if $gcc_cv_as -o conftest.o --traditional-format /dev/null; then
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AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
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[Define if your assembler mis-optimizes .eh_frame data.])
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fi
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fi
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fi
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rm -f conftest.*
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fi
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AC_MSG_RESULT($gcc_cv_as_eh_frame)
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case "$target" in
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sparc*-*-*)
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AC_CACHE_CHECK([assembler .register pseudo-op support],
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@ -1454,6 +1454,15 @@ init_spec ()
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libgcc_spec = obstack_finish (&obstack);
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}
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#endif
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#ifdef USE_AS_TRADITIONAL_FORMAT
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/* Prepend "--traditional-format" to whatever asm_spec we had before. */
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{
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static char tf[] = "--traditional-format ";
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obstack_grow (&obstack, tf, sizeof(tf) - 1);
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obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
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asm_spec = obstack_finish (&obstack);
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}
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#endif
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specs = sl;
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}
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