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authorJan Beulich <JBeulich@novell.com>2011-02-28 15:31:59 +0000
committerIngo Molnar <mingo@elte.hu>2011-02-28 18:06:21 +0100
commit39f2205e1abd1b6fffdaf45e1f1c3049a5f8999c (patch)
tree1039e246f3ee64354ea3ed9009512ff8c88529a2 /arch/x86/lib
parent7bf04be8f48ceeeffa5b5a79734d6d6e0d59e5f8 (diff)
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x86-64: Add CFI annotations to lib/rwsem_64.S
These weren't part of the initial commit of this code. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Alexander van Heukelum <heukelum@fastmail.fm> LKML-Reference: <4D6BCDFF02000078000341B0@vpn.id2.novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/lib')
-rw-r--r--arch/x86/lib/rwsem_64.S56
1 files changed, 34 insertions, 22 deletions
diff --git a/arch/x86/lib/rwsem_64.S b/arch/x86/lib/rwsem_64.S
index 41fcf00e49df..67743977398b 100644
--- a/arch/x86/lib/rwsem_64.S
+++ b/arch/x86/lib/rwsem_64.S
@@ -23,43 +23,50 @@
#include <asm/dwarf2.h>
#define save_common_regs \
- pushq %rdi; \
- pushq %rsi; \
- pushq %rcx; \
- pushq %r8; \
- pushq %r9; \
- pushq %r10; \
- pushq %r11
+ pushq_cfi %rdi; CFI_REL_OFFSET rdi, 0; \
+ pushq_cfi %rsi; CFI_REL_OFFSET rsi, 0; \
+ pushq_cfi %rcx; CFI_REL_OFFSET rcx, 0; \
+ pushq_cfi %r8; CFI_REL_OFFSET r8, 0; \
+ pushq_cfi %r9; CFI_REL_OFFSET r9, 0; \
+ pushq_cfi %r10; CFI_REL_OFFSET r10, 0; \
+ pushq_cfi %r11; CFI_REL_OFFSET r11, 0
#define restore_common_regs \
- popq %r11; \
- popq %r10; \
- popq %r9; \
- popq %r8; \
- popq %rcx; \
- popq %rsi; \
- popq %rdi
+ popq_cfi %r11; CFI_RESTORE r11; \
+ popq_cfi %r10; CFI_RESTORE r10; \
+ popq_cfi %r9; CFI_RESTORE r9; \
+ popq_cfi %r8; CFI_RESTORE r8; \
+ popq_cfi %rcx; CFI_RESTORE rcx; \
+ popq_cfi %rsi; CFI_RESTORE rsi; \
+ popq_cfi %rdi; CFI_RESTORE rdi
/* Fix up special calling conventions */
ENTRY(call_rwsem_down_read_failed)
+ CFI_STARTPROC
save_common_regs
- pushq %rdx
+ pushq_cfi %rdx
+ CFI_REL_OFFSET rdx, 0
movq %rax,%rdi
call rwsem_down_read_failed
- popq %rdx
+ popq_cfi %rdx
+ CFI_RESTORE rdx
restore_common_regs
ret
- ENDPROC(call_rwsem_down_read_failed)
+ CFI_ENDPROC
+ENDPROC(call_rwsem_down_read_failed)
ENTRY(call_rwsem_down_write_failed)
+ CFI_STARTPROC
save_common_regs
movq %rax,%rdi
call rwsem_down_write_failed
restore_common_regs
ret
- ENDPROC(call_rwsem_down_write_failed)
+ CFI_ENDPROC
+ENDPROC(call_rwsem_down_write_failed)
ENTRY(call_rwsem_wake)
+ CFI_STARTPROC
decl %edx /* do nothing if still outstanding active readers */
jnz 1f
save_common_regs
@@ -67,15 +74,20 @@ ENTRY(call_rwsem_wake)
call rwsem_wake
restore_common_regs
1: ret
- ENDPROC(call_rwsem_wake)
+ CFI_ENDPROC
+ENDPROC(call_rwsem_wake)
/* Fix up special calling conventions */
ENTRY(call_rwsem_downgrade_wake)
+ CFI_STARTPROC
save_common_regs
- pushq %rdx
+ pushq_cfi %rdx
+ CFI_REL_OFFSET rdx, 0
movq %rax,%rdi
call rwsem_downgrade_wake
- popq %rdx
+ popq_cfi %rdx
+ CFI_RESTORE rdx
restore_common_regs
ret
- ENDPROC(call_rwsem_downgrade_wake)
+ CFI_ENDPROC
+ENDPROC(call_rwsem_downgrade_wake)