configure.in (HAVE_AS_DWARF2_DEBUG_LINE): New.
* configure.in (HAVE_AS_DWARF2_DEBUG_LINE): New. Detect
whether as accepts .file/.loc and produces dwarf2 line info.
* dwarf2out.c (DWARF2_ASM_LINE_DEBUG_INFO): Default on if
the assembler supports it.
* config.in, configure: Regenerate.
From-SVN: r37534
This commit is contained in:
Richard Henderson
Richard Henderson
parent
5b87e928be
commit
9d1470857b
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@ -1,3 +1,11 @@
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2000-11-17 Richard Henderson <rth@redhat.com>
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* configure.in (HAVE_AS_DWARF2_DEBUG_LINE): New. Detect
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whether as accepts .file/.loc and produces dwarf2 line info.
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* dwarf2out.c (DWARF2_ASM_LINE_DEBUG_INFO): Default on if
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the assembler supports it.
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* config.in, configure: Regenerate.
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2000-11-17 Richard Henderson <rth@redhat.com>
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* fixinc/mkfixinc.sh: Don't disable fixincludes for any linux*.
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@ -443,6 +443,9 @@
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/* Define if your assembler supports offsetable %lo(). */
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#undef HAVE_AS_OFFSETABLE_LO10
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/* Define if your assembler supports dwarf2 .file/.loc directives. */
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#undef HAVE_AS_DWARF2_DEBUG_LINE
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/* Define if you want to always select the new-abi for g++. */
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#undef ENABLE_NEW_GXX_ABI
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@ -5851,7 +5851,7 @@ echo "$ac_t""$gcc_cv_nm" 1>&6
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# Figure out what assembler alignment features are present.
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echo $ac_n "checking assembler alignment features""... $ac_c" 1>&6
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echo "configure:5854: checking assembler alignment features" >&5
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gcc_cv_as_alignment_features=
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gcc_cv_as_alignment_features=none
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if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
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# Gas version 2.6 and later support for .balign and .p2align.
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# bytes to skip when using .p2align.
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@ -5899,7 +5899,7 @@ echo "$ac_t""$gcc_cv_as_alignment_features" 1>&6
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echo $ac_n "checking assembler subsection support""... $ac_c" 1>&6
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echo "configure:5902: checking assembler subsection support" >&5
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gcc_cv_as_subsections=
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gcc_cv_as_subsections=no
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if test x$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 "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
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gcc_cv_as_subsections="working .subsection -1"
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@ -5939,7 +5939,7 @@ echo "$ac_t""$gcc_cv_as_subsections" 1>&6
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echo $ac_n "checking assembler weak support""... $ac_c" 1>&6
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echo "configure:5942: checking assembler weak support" >&5
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gcc_cv_as_weak=
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gcc_cv_as_weak=no
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if test x$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 "$gcc_cv_gas_minor_version" -ge 2 -o "$gcc_cv_gas_major_version" -gt 2; then
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gcc_cv_as_weak="yes"
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@ -5962,7 +5962,7 @@ echo "$ac_t""$gcc_cv_as_weak" 1>&6
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echo $ac_n "checking assembler hidden support""... $ac_c" 1>&6
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echo "configure:5965: checking assembler hidden support" >&5
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gcc_cv_as_hidden=
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gcc_cv_as_hidden=no
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if test x$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 "$gcc_cv_gas_minor_version" -ge 10 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
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gcc_cv_as_hidden="yes"
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@ -6157,6 +6157,50 @@ EOF
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;;
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esac
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echo $ac_n "checking assembler dwarf2 debug_line support""... $ac_c" 1>&6
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echo "configure:6162: checking assembler dwarf2 debug_line support" >&5
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gcc_cv_as_dwarf2_debug_line=no
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# ??? Not all targets support dwarf2 debug_line, even within a version
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# of gas. Moreover, we need to emit a valid instruction to trigger any
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# info to the output file. So, as supported targets are added to gas 2.11,
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# add some instruction here to (also) show we expect this might work.
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# ??? Once 2.11 is released, probably need to add first known working
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# version to the per-target configury.
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case "$target" in
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i?86*-*-* | mips*-*-* | alpha*-*-*)
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insn="nop"
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;;
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ia64*-*-*)
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insn="nop 0"
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;;
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esac
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if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x;
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then
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if test "$gcc_cv_gas_major_version" -eq 2 \
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-a "$gcc_cv_gas_minor_version" -ge 11 \
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-o "$gcc_cv_gas_major_version" -gt 2 \
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&& grep 'obj_format = elf' ../gas/Makefile > /dev/null \
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&& test x"$insn" != x ; then
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gcc_cv_as_dwarf2_debug_line="yes"
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fi
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elif test x$gcc_cv_as != x -a x"$insn" != x ; then
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echo ' .file 0 "conftest.s"' > conftest.s
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echo ' .loc 0 3 0' >> conftest.s
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echo " $insn" >> conftest.s
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if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
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&& grep debug_line conftest.o > /dev/null 2>&1 ; then
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gcc_cv_as_dwarf2_debug_line="yes"
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fi
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rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
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fi
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if test x"$gcc_cv_as_dwarf2_debug_line" = xyes; then
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cat >> confdefs.h <<\EOF
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#define HAVE_AS_DWARF2_DEBUG_LINE 1
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EOF
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fi
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echo "$ac_t""$gcc_cv_as_dwarf2_debug_line" 1>&6
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# Figure out what language subdirectories are present.
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# Look if the user specified --enable-languages="..."; if not, use
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# the environment variable $LANGUAGES if defined. $LANGUAGES might
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@ -6285,7 +6329,7 @@ EOF
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echo $ac_n "checking whether to enable maintainer-specific portions of Makefiles""... $ac_c" 1>&6
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echo "configure:6289: checking whether to enable maintainer-specific portions of Makefiles" >&5
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echo "configure:6333: checking whether to enable maintainer-specific portions of Makefiles" >&5
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# Check whether --enable-maintainer-mode or --disable-maintainer-mode was given.
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if test "${enable_maintainer_mode+set}" = set; then
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enableval="$enable_maintainer_mode"
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@ -1210,7 +1210,7 @@ AC_MSG_RESULT($gcc_cv_nm)
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# Figure out what assembler alignment features are present.
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AC_MSG_CHECKING(assembler alignment features)
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gcc_cv_as_alignment_features=
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gcc_cv_as_alignment_features=none
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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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# Gas version 2.6 and later support for .balign and .p2align.
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# bytes to skip when using .p2align.
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@ -1245,7 +1245,7 @@ fi
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AC_MSG_RESULT($gcc_cv_as_alignment_features)
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AC_MSG_CHECKING(assembler subsection support)
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gcc_cv_as_subsections=
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gcc_cv_as_subsections=no
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if test x$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 "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
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gcc_cv_as_subsections="working .subsection -1"
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@ -1283,7 +1283,7 @@ fi
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AC_MSG_RESULT($gcc_cv_as_subsections)
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AC_MSG_CHECKING(assembler weak support)
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gcc_cv_as_weak=
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gcc_cv_as_weak=no
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if test x$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 "$gcc_cv_gas_minor_version" -ge 2 -o "$gcc_cv_gas_major_version" -gt 2; then
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gcc_cv_as_weak="yes"
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@ -1302,7 +1302,7 @@ fi
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AC_MSG_RESULT($gcc_cv_as_weak)
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AC_MSG_CHECKING(assembler hidden support)
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gcc_cv_as_hidden=
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gcc_cv_as_hidden=no
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if test x$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 "$gcc_cv_gas_minor_version" -ge 10 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
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gcc_cv_as_hidden="yes"
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@ -1457,6 +1457,47 @@ changequote([,])dnl
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;;
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esac
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AC_MSG_CHECKING(assembler dwarf2 debug_line support)
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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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# info to the output file. So, as supported targets are added to gas 2.11,
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# add some instruction here to (also) show we expect this might work.
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# ??? Once 2.11 is released, probably need to add first known working
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# version to the per-target configury.
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case "$target" in
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i?86*-*-* | mips*-*-* | alpha*-*-*)
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insn="nop"
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;;
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ia64*-*-*)
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insn="nop 0"
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;;
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esac
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if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x;
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then
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if test "$gcc_cv_gas_major_version" -eq 2 \
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-a "$gcc_cv_gas_minor_version" -ge 11 \
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-o "$gcc_cv_gas_major_version" -gt 2 \
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&& grep 'obj_format = elf' ../gas/Makefile > /dev/null \
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&& test x"$insn" != x ; then
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gcc_cv_as_dwarf2_debug_line="yes"
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fi
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elif test x$gcc_cv_as != x -a x"$insn" != x ; then
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echo ' .file 0 "conftest.s"' > conftest.s
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echo ' .loc 0 3 0' >> conftest.s
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echo " $insn" >> conftest.s
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if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
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&& grep debug_line conftest.o > /dev/null 2>&1 ; then
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gcc_cv_as_dwarf2_debug_line="yes"
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fi
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rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
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fi
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if test x"$gcc_cv_as_dwarf2_debug_line" = xyes; then
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AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
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[Define if your assembler supports dwarf2 .file/.loc directives.])
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fi
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AC_MSG_RESULT($gcc_cv_as_dwarf2_debug_line)
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# Figure out what language subdirectories are present.
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# Look if the user specified --enable-languages="..."; if not, use
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# the environment variable $LANGUAGES if defined. $LANGUAGES might
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@ -3127,10 +3127,14 @@ extern int flag_traditional;
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(DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, DWARF2_ADDR_SIZE * 2) \
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- (2 * DWARF_OFFSET_SIZE + 4))
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/* The default is to have gcc emit the line number tables. */
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/* Use assembler line directives if available. */
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#ifndef DWARF2_ASM_LINE_DEBUG_INFO
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#ifdef HAVE_AS_DWARF2_DEBUG_LINE
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#define DWARF2_ASM_LINE_DEBUG_INFO 1
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#else
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#define DWARF2_ASM_LINE_DEBUG_INFO 0
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#endif
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#endif
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/* Define the architecture-dependent minimum instruction length (in bytes).
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In this implementation of DWARF, this field is used for information
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