+2018-02-28 Jakub Jelinek <jakub@redhat.com>
+
+ 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.
+
2018-02-26 Jakub Jelinek <jakub@redhat.com>
PR debug/83917
/* config.in. Generated from configure.ac by autoheader. */
+/* Define to the .hidden-like directive if it exists. */
+#undef AS_HIDDEN_DIRECTIVE
+
/* Define to 1 if the assembler supports AVX. */
#undef HAVE_AS_AVX
+/* Define to 1 if the assembler supports .cfi_sections .debug_frame directive.
+ */
+#undef HAVE_AS_CFI_SECTIONS
+
/* Define to 1 if the target assembler supports thread-local storage. */
#undef HAVE_CC_TLS
* <http://www.gnu.org/licenses/>.
*/
-#ifdef HAVE_GAS_CFI_SECTIONS_DIRECTIVE
-# define USE_GAS_CFI_DIRECTIVES 1
+#include "i386-asm.h"
+
+#ifdef HAVE_AS_CFI_SECTIONS
.cfi_sections .debug_frame
-#else
-# define USE_GAS_CFI_DIRECTIVES 0
#endif
-#include "i386-asm.h"
#ifdef L_chkstk
/* Function prologue calls __chkstk to probe the stack when allocating more
#define I386_ASM_H
#include "auto-target.h"
-#undef PACKAGE_VERSION
-#undef PACKAGE_NAME
-#undef PACKAGE_STRING
-#undef PACKAGE_TARNAME
-#undef PACKAGE_URL
-#include "auto-host.h"
-
-#ifndef USE_GAS_CFI_DIRECTIVES
-# ifdef __GCC_HAVE_DWARF2_CFI_ASM
-# define USE_GAS_CFI_DIRECTIVES 1
-# else
-# define USE_GAS_CFI_DIRECTIVES 0
-# endif
-#endif
-#if USE_GAS_CFI_DIRECTIVES
+
+#ifdef __GCC_HAVE_DWARF2_CFI_ASM
# define cfi_startproc() .cfi_startproc
# define cfi_endproc() .cfi_endproc
# define cfi_adjust_cfa_offset(X) .cfi_adjust_cfa_offset X
#ifdef __ELF__
# define FN_TYPE(fn) .type fn,@function
# define FN_SIZE(fn) .size fn,.-fn
-# ifdef HAVE_GAS_HIDDEN
-# define FN_HIDDEN(fn) .hidden fn
+# ifdef AS_HIDDEN_DIRECTIVE
+# define FN_HIDDEN(fn) AS_HIDDEN_DIRECTIVE fn
# endif
#else
# define FN_TYPE(fn)
if test $libgcc_cv_hidden_visibility_attribute = yes; then
vis_hide='-fvisibility=hidden -DHIDE_EXPORTS'
+
+cat >>confdefs.h <<_ACEOF
+#define AS_HIDDEN_DIRECTIVE $asm_hidden_op
+_ACEOF
+
else
vis_hide=
fi
+# Check for .cfi_sections .debug_frame support.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for .cfi_sections .debug_frame" >&5
+$as_echo_n "checking for .cfi_sections .debug_frame... " >&6; }
+if test "${libgcc_cv_cfi_sections_directive+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+
+ echo 'int foo (int, char *);' > conftest.c
+ echo 'int bar (int x) { char *y = __builtin_alloca (x); return foo (x + 1, y) + 1; }' >> conftest.c
+ libgcc_cv_cfi_sections_directive=no
+ if { ac_try='${CC-cc} -Werror -g -fno-asynchronous-unwind-tables -fno-unwind-tables -fno-exceptions -S conftest.c -o conftest.s 1>&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }; then
+ if grep "\\.cfi_sections.*\\.debug_frame" conftest.s >/dev/null; then
+ libgcc_cv_cfi_sections_directive=yes
+ fi
+ fi
+ rm -f conftest.*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgcc_cv_cfi_sections_directive" >&5
+$as_echo "$libgcc_cv_cfi_sections_directive" >&6; }
+if test $libgcc_cv_cfi_sections_directive = yes; then
+
+$as_echo "#define HAVE_AS_CFI_SECTIONS 1" >>confdefs.h
+
+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
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
projects / gcc.git / commitdiff