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| author | Jakub Jelinek <jakub@redhat.com> | 2018-02-28 09:59:15 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2018-02-28 09:59:15 +0100 |
| commit | ce579a4fe084bb4aea2b677592e114639d9afc07 (patch) | |
| tree | ee17476149a90f9a012107fe31e62bdcb32f4996 /libgcc/configure.ac | |
| parent | 678127a85e78a86d680e33b208e1571dc2dc045f (diff) | |
| download | gcc-ce579a4fe084bb4aea2b677592e114639d9afc07.zip gcc-ce579a4fe084bb4aea2b677592e114639d9afc07.tar.gz gcc-ce579a4fe084bb4aea2b677592e114639d9afc07.tar.bz2 | |
re PR debug/83917 (with -mcall-ms2sysv-xlogues, stepping into x86 tail-call restore stub gives bad backtrace)
PR debug/83917
* configure.ac (AS_HIDDEN_DIRECTIVE): AC_DEFINE_UNQUOTED this to
$asm_hidden_op if visibility ("hidden") attribute works.
(HAVE_AS_CFI_SECTIONS): New AC_DEFINE.
* config/i386/i386-asm.h: Don't include auto-host.h.
(PACKAGE_VERSION, PACKAGE_NAME, PACKAGE_STRING, PACKAGE_TARNAME,
PACKAGE_URL): Don't undefine.
(USE_GAS_CFI_DIRECTIVES): Don't use nor define this macro, instead
guard cfi_startproc only on ifdef __GCC_HAVE_DWARF2_CFI_ASM.
(FN_HIDDEN): Change guard from #ifdef HAVE_GAS_HIDDEN to
#ifdef AS_HIDDEN_DIRECTIVE, use AS_HIDDEN_DIRECTIVE macro in the
definition instead of hardcoded .hidden.
* config/i386/cygwin.S: Include i386-asm.h first before .cfi_sections
directive. Use #ifdef HAVE_AS_CFI_SECTIONS rather than
#ifdef HAVE_GAS_CFI_SECTIONS_DIRECTIVE to guard .cfi_sections.
(USE_GAS_CFI_DIRECTIVES): Don't define.
* configure: Regenerated.
* config.in: Likewise.
From-SVN: r258057
Diffstat (limited to 'libgcc/configure.ac')
| -rw-r--r-- | libgcc/configure.ac | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libgcc/configure.ac b/libgcc/configure.ac index 6e76a68..b59aa74 100644 --- a/libgcc/configure.ac +++ b/libgcc/configure.ac @@ -486,11 +486,29 @@ AC_CACHE_CHECK([for __attribute__((visibility("hidden")))], if test $libgcc_cv_hidden_visibility_attribute = yes; then vis_hide='-fvisibility=hidden -DHIDE_EXPORTS' + AC_DEFINE_UNQUOTED(AS_HIDDEN_DIRECTIVE, $asm_hidden_op, [Define to the .hidden-like directive if it exists.]) else vis_hide= fi AC_SUBST(vis_hide) +# Check for .cfi_sections .debug_frame support. +AC_CACHE_CHECK([for .cfi_sections .debug_frame], + libgcc_cv_cfi_sections_directive, [ + echo 'int foo (int, char *);' > conftest.c + echo 'int bar (int x) { char *y = __builtin_alloca (x); return foo (x + 1, y) + 1; }' >> conftest.c + libgcc_cv_cfi_sections_directive=no + if AC_TRY_COMMAND(${CC-cc} -Werror -g -fno-asynchronous-unwind-tables -fno-unwind-tables -fno-exceptions -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then + if grep "\\.cfi_sections.*\\.debug_frame" conftest.s >/dev/null; then + libgcc_cv_cfi_sections_directive=yes + fi + fi + rm -f conftest.* + ]) +if test $libgcc_cv_cfi_sections_directive = yes; then + AC_DEFINE(HAVE_AS_CFI_SECTIONS, 1, [Define to 1 if the assembler supports .cfi_sections .debug_frame directive.]) +fi + # See if we have thread-local storage. We can only test assembler # since link-time and run-time tests require the newly built # gcc, which can't be used to build executable due to that libgcc |