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x86: Unwind-annotate thunk_32.S

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Signed-off-by: Jan Beulich <jbeulich@suse.com>
Link: http://lkml.kernel.org/r/542291CA0200007800038085@mail.emea.novell.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jan Beulich 2014-09-24 08:41:30 +01:00 committed by Thomas Gleixner
parent 5f1d919a8c
commit f74954f01e
1 changed files with 15 additions and 6 deletions
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21
arch/x86/lib/thunk_32.S
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@ -6,14 +6,19 @@
*/ */
#include <linux/linkage.h> #include <linux/linkage.h>
#include <asm/asm.h> #include <asm/asm.h>
#include <asm/dwarf2.h>
/* put return address in eax (arg1) */ /* put return address in eax (arg1) */
.macro THUNK name, func, put_ret_addr_in_eax=0 .macro THUNK name, func, put_ret_addr_in_eax=0
.globl \name .globl \name
\name: \name:
pushl %eax CFI_STARTPROC
pushl %ecx pushl_cfi %eax
pushl %edx 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 .if \put_ret_addr_in_eax
/* Place EIP in the arg1 */ /* Place EIP in the arg1 */
@ -21,10 +26,14 @@
.endif .endif
call \func call \func
popl %edx popl_cfi %edx
popl %ecx CFI_RESTORE edx
popl %eax popl_cfi %ecx
CFI_RESTORE ecx
popl_cfi %eax
CFI_RESTORE eax
ret ret
CFI_ENDPROC
_ASM_NOKPROBE(\name) _ASM_NOKPROBE(\name)
.endm .endm