linux-kernel - [tip:x86/asm] x86: Unwind-annotate thunk

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Message-ID: <tip-f74954f01ec9bb2004bcc24f247d1f26f1063ad2@git.kernel.org>
Date:	Wed, 8 Oct 2014 03:33:23 -0700
From:	tip-bot for Jan Beulich <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	jbeulich@...e.com, JBeulich@...e.com, tglx@...utronix.de
Subject: [tip:x86/asm] x86: Unwind-annotate thunk_32.S

Commit-ID:  f74954f01ec9bb2004bcc24f247d1f26f1063ad2
Gitweb:     http://git.kernel.org/tip/f74954f01ec9bb2004bcc24f247d1f26f1063ad2
Author:     Jan Beulich <JBeulich@...e.com>
AuthorDate: Wed, 24 Sep 2014 08:41:30 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 8 Oct 2014 12:31:45 +0200

x86: Unwind-annotate thunk_32.S

Signed-off-by: Jan Beulich <jbeulich@...e.com>
Link: http://lkml.kernel.org/r/542291CA0200007800038085@mail.emea.novell.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/lib/thunk_32.S | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/arch/x86/lib/thunk_32.S b/arch/x86/lib/thunk_32.S
index e9acf5f..e28cdaf 100644
--- a/arch/x86/lib/thunk_32.S
+++ b/arch/x86/lib/thunk_32.S
@@ -6,14 +6,19 @@
  */
 	#include <linux/linkage.h>
 	#include <asm/asm.h>
+	#include <asm/dwarf2.h>
 
 	/* put return address in eax (arg1) */
 	.macro THUNK name, func, put_ret_addr_in_eax=0
 	.globl \name
 \name:
-	pushl %eax
-	pushl %ecx
-	pushl %edx
+	CFI_STARTPROC
+	pushl_cfi %eax
+	CFI_REL_OFFSET eax, 0
+	pushl_cfi %ecx
+	CFI_REL_OFFSET ecx, 0
+	pushl_cfi %edx
+	CFI_REL_OFFSET edx, 0
 
 	.if \put_ret_addr_in_eax
 	/* Place EIP in the arg1 */
@@ -21,10 +26,14 @@
 	.endif
 
 	call \func
-	popl %edx
-	popl %ecx
-	popl %eax
+	popl_cfi %edx
+	CFI_RESTORE edx
+	popl_cfi %ecx
+	CFI_RESTORE ecx
+	popl_cfi %eax
+	CFI_RESTORE eax
 	ret
+	CFI_ENDPROC
 	_ASM_NOKPROBE(\name)
 	.endm
 
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