Alexandre Julliard : configure: Add .cfi_startproc/ endproc directives to assembly functions if supported.
Alexandre Julliard
julliard at winehq.org
Fri Jun 12 10:41:09 CDT 2009
Module: wine
Branch: master
Commit: ccea0ae9e2fb4a73da542c05222705adf301513a
URL: http://source.winehq.org/git/wine.git/?a=commit;h=ccea0ae9e2fb4a73da542c05222705adf301513a
Author: Alexandre Julliard <julliard at winehq.org>
Date: Thu Jun 11 19:46:19 2009 +0200
configure: Add .cfi_startproc/endproc directives to assembly functions if supported.
---
configure | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
configure.ac | 10 ++++++++++
2 files changed, 67 insertions(+), 0 deletions(-)
diff --git a/configure b/configure
index 90b82a7..3130f70 100755
--- a/configure
+++ b/configure
@@ -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"
diff --git a/configure.ac b/configure.ac
index 4f74d71..4b89c19 100644
--- a/configure.ac
+++ b/configure.ac
@@ -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])
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