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authorJan Beulich <jbeulich@novell.com>2005-09-12 18:49:24 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-12 10:50:56 -0700
commit7effaa882af523085f7acadc5871b75a7e506baf (patch)
tree420890a24a9904bdaaec20dd9909d2f6f1e0d2f6 /include/asm-x86_64/calling.h
parentb3ab8382245541ea030faaa1645f66258fde452d (diff)
downloadop-kernel-dev-7effaa882af523085f7acadc5871b75a7e506baf.zip
op-kernel-dev-7effaa882af523085f7acadc5871b75a7e506baf.tar.gz
[PATCH] x86-64: Fix CFI information
Being the foundation for reliable stack unwinding, this fixes CFI unwind annotations in many low-level x86_64 routines, plus a config option (available to all architectures, and also present in the previously sent patch adding such annotations to i386 code) to enable them separatly rather than only along with adding full debug information. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64/calling.h')
-rw-r--r--include/asm-x86_64/calling.h23
1 files changed, 15 insertions, 8 deletions
diff --git a/include/asm-x86_64/calling.h b/include/asm-x86_64/calling.h
index 0bc1265..fc2c5a6 100644
--- a/include/asm-x86_64/calling.h
+++ b/include/asm-x86_64/calling.h
@@ -65,27 +65,36 @@
.if \skipr11
.else
movq (%rsp),%r11
+ CFI_RESTORE r11
.endif
.if \skipr8910
.else
movq 1*8(%rsp),%r10
+ CFI_RESTORE r10
movq 2*8(%rsp),%r9
+ CFI_RESTORE r9
movq 3*8(%rsp),%r8
+ CFI_RESTORE r8
.endif
.if \skiprax
.else
movq 4*8(%rsp),%rax
+ CFI_RESTORE rax
.endif
.if \skiprcx
.else
movq 5*8(%rsp),%rcx
+ CFI_RESTORE rcx
.endif
.if \skiprdx
.else
movq 6*8(%rsp),%rdx
+ CFI_RESTORE rdx
.endif
movq 7*8(%rsp),%rsi
+ CFI_RESTORE rsi
movq 8*8(%rsp),%rdi
+ CFI_RESTORE rdi
.if ARG_SKIP+\addskip > 0
addq $ARG_SKIP+\addskip,%rsp
CFI_ADJUST_CFA_OFFSET -(ARG_SKIP+\addskip)
@@ -124,11 +133,17 @@
.macro RESTORE_REST
movq (%rsp),%r15
+ CFI_RESTORE r15
movq 1*8(%rsp),%r14
+ CFI_RESTORE r14
movq 2*8(%rsp),%r13
+ CFI_RESTORE r13
movq 3*8(%rsp),%r12
+ CFI_RESTORE r12
movq 4*8(%rsp),%rbp
+ CFI_RESTORE rbp
movq 5*8(%rsp),%rbx
+ CFI_RESTORE rbx
addq $REST_SKIP,%rsp
CFI_ADJUST_CFA_OFFSET -(REST_SKIP)
.endm
@@ -146,11 +161,3 @@
.macro icebp
.byte 0xf1
.endm
-
-#ifdef CONFIG_FRAME_POINTER
-#define ENTER enter
-#define LEAVE leave
-#else
-#define ENTER
-#define LEAVE
-#endif
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