libitm: Configure for gas cfi pseudo ops.

	* asmcfi.m4: New file.

	* configure.ac (GCC_AS_CFI_PSEUDO_OP): Test it.
	* configure, aclocal.m4, config.h.in: Rebuild.
	* config/generic/asmcfi.h: New file.
	* config/x86/sjlj.S: Use it.

From-SVN: r181224

2 files changed, 59 insertions, 12 deletions

diff --git a/libitm/config/generic/asmcfi.h b/libitm/config/generic/asmcfi.h
new file mode 100644
index 0000000..fcb45c5
--- /dev/null
+++ b/libitm/config/generic/asmcfi.h
@@ -0,0 +1,44 @@
+
+/* Copyright (C) 2011 Free Software Foundation, Inc.
+   Contributed by Richard Henderson <rth@redhat.com>.
+
+   This file is part of the GNU Transactional Memory Library (libitm).
+
+   Libitm is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+   FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+   more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+
+#ifdef HAVE_AS_CFI_PSEUDO_OP
+
+#define cfi_startproc		.cfi_startproc
+#define cfi_endproc		.cfi_endproc
+#define cfi_def_cfa_offset(n)	.cfi_def_cfa_offset n
+#define cfi_def_cfa(r,n)	.cfi_def_cfa r, n
+#define cfi_register(o,n)	.cfi_register o, n
+
+#else
+
+#define cfi_startproc
+#define cfi_endproc
+#define cfi_def_cfa_offset(n)
+#define cfi_def_cfa(r,n)
+#define cfi_register(o,n)
+
+#endif /* HAVE_ASM_CFI */
diff --git a/libitm/config/x86/sjlj.S b/libitm/config/x86/sjlj.S
index 725ffec..6169499 100644
--- a/libitm/config/x86/sjlj.S
+++ b/libitm/config/x86/sjlj.S
@@ -22,18 +22,21 @@
    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    <http://www.gnu.org/licenses/>.  */
 
+
+#include "asmcfi.h"
+
 	.text
 	.p2align 4
 	.globl	_ITM_beginTransaction
 	.type	_ITM_beginTransaction, @function
 
 _ITM_beginTransaction:
-	.cfi_startproc
+	cfi_startproc
 #ifdef __x86_64__
 	leaq	8(%rsp), %rax
 	movq	(%rsp), %r8
 	subq	$72, %rsp
-	.cfi_def_cfa_offset 80
+	cfi_def_cfa_offset(80)
 	movq	%rax, (%rsp)
 	movq	%r8, 8(%rsp)
 	movq	%rbx, 16(%rsp)
@@ -45,12 +48,12 @@ _ITM_beginTransaction:
 	movq	%rsp, %rsi
 	call	GTM_begin_transaction
 	addq	$72, %rsp
-	.cfi_def_cfa_offset 8
+	cfi_def_cfa_offset(8)
 	ret
 #else
 	leal	4(%esp), %ecx
 	subl	$28, %esp
-	.cfi_def_cfa_offset 32
+	cfi_def_cfa_offset(32)
 	movl	%ecx, 8(%esp)
 	movl	%ebx, 12(%esp)
 	movl	%esi, 16(%esp)
@@ -59,10 +62,10 @@ _ITM_beginTransaction:
 	leal	8(%esp), %edx
 	call	GTM_begin_transaction
 	addl	$28, %esp
-	.cfi_def_cfa_offset 4
+	cfi_def_cfa_offset(4)
 	ret
 #endif
-	.cfi_endproc
+	cfi_endproc
 	.size	_ITM_beginTransaction, .-_ITM_beginTransaction
 
 	.p2align 4
@@ -71,7 +74,7 @@ _ITM_beginTransaction:
 	.hidden	GTM_longjmp
 
 GTM_longjmp:
-	.cfi_startproc
+	cfi_startproc
 #ifdef __x86_64__
 	movq	(%rdi), %rcx
 	movq	8(%rdi), %rdx
@@ -82,8 +85,8 @@ GTM_longjmp:
 	movq	48(%rdi), %r14
 	movq	56(%rdi), %r15
 	movl	%esi, %eax
-	.cfi_def_cfa %rcx, 0
-	.cfi_register %rip, %rdx
+	cfi_def_cfa(%rcx, 0)
+	cfi_register(%rip, %rdx)
 	movq	%rcx, %rsp
 	jmp	*%rdx
 #else
@@ -94,12 +97,12 @@ GTM_longjmp:
 	movl	12(%edx), %edi
 	movl	16(%edx), %ebp
 	movl	20(%edx), %edx
-	.cfi_def_cfa %ecx, 0
-	.cfi_register %eip, %edx
+	cfi_def_cfa(%ecx, 0)
+	cfi_register(%eip, %edx)
 	movl	%ecx, %esp
 	jmp	*%edx
 #endif
-	.cfi_endproc
+	cfi_endproc
 	.size	GTM_longjmp, .-GTM_longjmp
 
 .section .note.GNU-stack, "", @progbits