configure.ac (libffi_cv_as_x86_pcrel): Check for illegal in as output, too.

	* configure.ac (libffi_cv_as_x86_pcrel): Check for illegal in as
	output, too.
	(libffi_cv_as_ascii_pseudo_op): Check for .ascii.
	(libffi_cv_as_string_pseudo_op): Check for .string.
	* configure: Regenerate.
	* fficonfig.h.in: Regenerate.
	* src/x86/sysv.S (.eh_frame): Use .ascii, .string or error.

From-SVN: r159570

5 files changed, 125 insertions, 3 deletions

diff --git a/libffi/ChangeLog b/libffi/ChangeLog
index 6abe696187f..01a71a8cd5c 100644
--- a/libffi/ChangeLog
+++ b/libffi/ChangeLog
@@ -1,3 +1,13 @@
+2010-05-19  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* configure.ac (libffi_cv_as_x86_pcrel): Check for illegal in as
+	output, too.
+	(libffi_cv_as_ascii_pseudo_op): Check for .ascii.
+	(libffi_cv_as_string_pseudo_op): Check for .string.
+	* configure: Regenerate.
+	* fficonfig.h.in: Regenerate.
+	* src/x86/sysv.S (.eh_frame): Use .ascii, .string or error.
+
 2010-04-07  Jakub Jelinek  <jakub@redhat.com>
 
 	* regex.c (byte_re_match_2_internal): Avoid set but not used
diff --git a/libffi/configure b/libffi/configure
index 5555e51289d..a63368ba1c9 100755
--- a/libffi/configure
+++ b/libffi/configure
@@ -12397,7 +12397,7 @@ else
 
 	libffi_cv_as_x86_pcrel=yes
 	echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
-	if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
+	if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then
 	    libffi_cv_as_x86_pcrel=no
 	fi
 
@@ -12409,6 +12409,76 @@ $as_echo "$libffi_cv_as_x86_pcrel" >&6; }
 $as_echo "#define HAVE_AS_X86_PCREL 1" >>confdefs.h
 
     fi
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler .ascii pseudo-op support" >&5
+$as_echo_n "checking assembler .ascii pseudo-op support... " >&6; }
+if test "${libffi_cv_as_ascii_pseudo_op+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+
+       libffi_cv_as_ascii_pseudo_op=unknown
+       # Check if we have .ascii
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+asm (".ascii \"string\"");
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libffi_cv_as_ascii_pseudo_op=yes
+else
+  libffi_cv_as_ascii_pseudo_op=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libffi_cv_as_ascii_pseudo_op" >&5
+$as_echo "$libffi_cv_as_ascii_pseudo_op" >&6; }
+    if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then
+
+$as_echo "#define HAVE_AS_ASCII_PSEUDO_OP 1" >>confdefs.h
+
+    fi
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler .string pseudo-op support" >&5
+$as_echo_n "checking assembler .string pseudo-op support... " >&6; }
+if test "${libffi_cv_as_string_pseudo_op+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+
+       libffi_cv_as_string_pseudo_op=unknown
+       # Check if we have .string
+       cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+asm (".string \"string\"");
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libffi_cv_as_string_pseudo_op=yes
+else
+  libffi_cv_as_string_pseudo_op=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libffi_cv_as_string_pseudo_op" >&5
+$as_echo "$libffi_cv_as_string_pseudo_op" >&6; }
+    if test "x$libffi_cv_as_string_pseudo_op" = xyes; then
+
+$as_echo "#define HAVE_AS_STRING_PSEUDO_OP 1" >>confdefs.h
+
+    fi
 fi
 
 case "$target" in
diff --git a/libffi/configure.ac b/libffi/configure.ac
index 1b484f94bde..d4644a3df31 100644
--- a/libffi/configure.ac
+++ b/libffi/configure.ac
@@ -266,7 +266,7 @@ if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64
 	libffi_cv_as_x86_pcrel, [
 	libffi_cv_as_x86_pcrel=yes
 	echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
-	if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
+	if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then
 	    libffi_cv_as_x86_pcrel=no
 	fi
 	])
@@ -274,6 +274,32 @@ if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64
 	AC_DEFINE(HAVE_AS_X86_PCREL, 1,
 		  [Define if your assembler supports PC relative relocs.])
     fi
+
+    AC_CACHE_CHECK([assembler .ascii pseudo-op support],
+       libffi_cv_as_ascii_pseudo_op, [
+       libffi_cv_as_ascii_pseudo_op=unknown
+       # Check if we have .ascii
+       AC_TRY_COMPILE([asm (".ascii \"string\"");],,
+		       [libffi_cv_as_ascii_pseudo_op=yes],
+		       [libffi_cv_as_ascii_pseudo_op=no])
+    ])
+    if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then
+       AC_DEFINE(HAVE_AS_ASCII_PSEUDO_OP, 1,
+	       [Define if your assembler supports .ascii.])
+    fi
+
+    AC_CACHE_CHECK([assembler .string pseudo-op support],
+       libffi_cv_as_string_pseudo_op, [
+       libffi_cv_as_string_pseudo_op=unknown
+       # Check if we have .string
+       AC_TRY_COMPILE([asm (".string \"string\"");],,
+		       [libffi_cv_as_string_pseudo_op=yes],
+		       [libffi_cv_as_string_pseudo_op=no])
+    ])
+    if test "x$libffi_cv_as_string_pseudo_op" = xyes; then
+       AC_DEFINE(HAVE_AS_STRING_PSEUDO_OP, 1,
+	       [Define if your assembler supports .string.])
+    fi
 fi
 
 case "$target" in
diff --git a/libffi/fficonfig.h.in b/libffi/fficonfig.h.in
index 7231cc5ead3..e012ebba84b 100644
--- a/libffi/fficonfig.h.in
+++ b/libffi/fficonfig.h.in
@@ -33,6 +33,9 @@
    */
 #undef HAVE_ALLOCA_H
 
+/* Define if your assembler supports .ascii. */
+#undef HAVE_AS_ASCII_PSEUDO_OP
+
 /* Define if your assembler supports .cfi_* directives. */
 #undef HAVE_AS_CFI_PSEUDO_OP
 
@@ -43,6 +46,9 @@
    */
 #undef HAVE_AS_SPARC_UA_PCREL
 
+/* Define if your assembler supports .string. */
+#undef HAVE_AS_STRING_PSEUDO_OP
+
 /* Define if your assembler supports unwind section type. */
 #undef HAVE_AS_X86_64_UNWIND_SECTION_TYPE
 
diff --git a/libffi/src/x86/sysv.S b/libffi/src/x86/sysv.S
index f4b6c1e4415..2e5e3da57f0 100644
--- a/libffi/src/x86/sysv.S
+++ b/libffi/src/x86/sysv.S
@@ -1,5 +1,5 @@
 /* -----------------------------------------------------------------------
-   sysv.S - Copyright (c) 1996, 1998, 2001-2003, 2005, 2008  Red Hat, Inc.
+   sysv.S - Copyright (c) 1996, 1998, 2001-2003, 2005, 2008, 2010  Red Hat, Inc.
    
    X86 Foreign Function Interface 
 
@@ -331,11 +331,21 @@ ffi_closure_raw_SYSV:
 .LSCIE1:
 	.long	0x0	/* CIE Identifier Tag */
 	.byte	0x1	/* CIE Version */
+#ifdef HAVE_AS_ASCII_PSEUDO_OP
 #ifdef __PIC__
 	.ascii "zR\0"	/* CIE Augmentation */
 #else
 	.ascii "\0"	/* CIE Augmentation */
 #endif
+#elif defined HAVE_AS_STRING_PSEUDO_OP
+#ifdef __PIC__
+	.string "zR"	/* CIE Augmentation */
+#else
+	.string ""	/* CIE Augmentation */
+#endif
+#else
+#error missing .ascii/.string
+#endif
 	.byte	0x1	/* .uleb128 0x1; CIE Code Alignment Factor */
 	.byte	0x7c	/* .sleb128 -4; CIE Data Alignment Factor */
 	.byte	0x8	/* CIE RA Column */