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configure: Add .cfi_startproc/endproc directives to assembly functions if supported.

This commit is contained in:
Alexandre Julliard 2009-06-11 19:46:19 +02:00
parent 8e0600221d
commit ccea0ae9e2
2 changed files with 67 additions and 0 deletions
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57
configure vendored
View File

@ -17865,12 +17865,69 @@ fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_c_dot_previous" >&5
$as_echo "$ac_cv_c_dot_previous" >&6; }
{ $as_echo "$as_me:$LINENO: checking whether CFI directives are supported in assembly code" >&5
$as_echo_n "checking whether CFI directives are supported in assembly code... " >&6; }
if test "${ac_cv_c_cfi_support+set}" = set; then
$as_echo_n "(cached) " >&6
else
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
asm(".text\nac_test:\t.cfi_startproc\n\t.long 0\n\t.cfi_endproc");
int
main ()
{
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (ac_try="$ac_compile"
case "(($ac_try" in
*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
*) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
(eval "$ac_compile") 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
$as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } && {
test -z "$ac_c_werror_flag" ||
test ! -s conftest.err
} && test -s conftest.$ac_objext; then
ac_cv_c_cfi_support="yes"
else
$as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_cv_c_cfi_support="no"
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_c_cfi_support" >&5
$as_echo "$ac_cv_c_cfi_support" >&6; }
asm_func_header=".globl $asm_name_prefix\" #name \"\\n\\t$asm_func_header\\n$asm_name_prefix\" #name \":\\n\\t"
asm_func_trailer=""
if test "$ac_cv_c_dot_previous" = "yes"
then
asm_func_trailer="\\n\\t.previous"
fi
if test "$ac_cv_c_cfi_support" = "yes"
then
asm_func_header="$asm_func_header.cfi_startproc\\n\\t"
asm_func_trailer="\\n\\t.cfi_endproc$asm_func_trailer"
fi
asm_func_code="$asm_func_header\" code \"$asm_func_trailer"

10
configure.ac
View File

@ -1438,12 +1438,22 @@ AC_CACHE_CHECK([whether .previous is supported in assembly code], ac_cv_c_dot_pr
WINE_TRY_ASM_LINK([".text\nac_test:\t.long 0\n\t.previous"],,,
ac_cv_c_dot_previous="yes",ac_cv_c_dot_previous="no"))
AC_CACHE_CHECK([whether CFI directives are supported in assembly code], ac_cv_c_cfi_support,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[asm(".text\nac_test:\t.cfi_startproc\n\t.long 0\n\t.cfi_endproc");]])],
ac_cv_c_cfi_support="yes",ac_cv_c_cfi_support="no"))
asm_func_header=".globl $asm_name_prefix\" #name \"\\n\\t$asm_func_header\\n$asm_name_prefix\" #name \":\\n\\t"
asm_func_trailer=""
if test "$ac_cv_c_dot_previous" = "yes"
then
asm_func_trailer="\\n\\t.previous"
fi
if test "$ac_cv_c_cfi_support" = "yes"
then
asm_func_header="$asm_func_header.cfi_startproc\\n\\t"
asm_func_trailer="\\n\\t.cfi_endproc$asm_func_trailer"
fi
asm_func_code="$asm_func_header\" code \"$asm_func_trailer"
AH_TEMPLATE(__ASM_GLOBAL_FUNC,[Define to a macro to generate an assembly function])