dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

x86-64: Use symbolics instead of raw numbers in entry_64.S 

... making the code a little less fragile.

Also use pushq_cfi instead of raw CFI annotations in two more
places, and add two missing annotations after stack pointer
adjustments which got modified here anyway.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Alexander van Heukelum <heukelum@fastmail.fm>
LKML-Reference: <4C7FBACF0200007800013F6A@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jan Beulich 2010-09-02 13:55:11 +01:00 committed by Ingo Molnar
parent 1f130a783a
commit b1cccb1bb0
1 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
arch/x86/kernel/entry_64.S
View File

@ -795,8 +795,8 @@ END(interrupt)
/* 0(%rsp): ~(interrupt number) */
.macro interrupt func
subq $10*8, %rsp
CFI_ADJUST_CFA_OFFSET 10*8
subq $ORIG_RAX-ARGOFFSET+8, %rsp
CFI_ADJUST_CFA_OFFSET ORIG_RAX-ARGOFFSET+8
call save_args
PARTIAL_FRAME 0
call \func
@ -1035,8 +1035,8 @@ ENTRY(\sym)
INTR_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
pushq_cfi $-1 /* ORIG_RAX: no syscall to restart */
subq $15*8,%rsp
CFI_ADJUST_CFA_OFFSET 15*8
subq $ORIG_RAX-R15, %rsp
CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call error_entry
DEFAULT_FRAME 0
movq %rsp,%rdi /* pt_regs pointer */
@ -1051,9 +1051,9 @@ END(\sym)
ENTRY(\sym)
INTR_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
pushq $-1 /* ORIG_RAX: no syscall to restart */
CFI_ADJUST_CFA_OFFSET 8
subq $15*8, %rsp
pushq_cfi $-1 /* ORIG_RAX: no syscall to restart */
subq $ORIG_RAX-R15, %rsp
CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call save_paranoid
TRACE_IRQS_OFF
movq %rsp,%rdi /* pt_regs pointer */
@ -1069,9 +1069,9 @@ END(\sym)
ENTRY(\sym)
INTR_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
pushq $-1 /* ORIG_RAX: no syscall to restart */
CFI_ADJUST_CFA_OFFSET 8
subq $15*8, %rsp
pushq_cfi $-1 /* ORIG_RAX: no syscall to restart */
subq $ORIG_RAX-R15, %rsp
CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call save_paranoid
TRACE_IRQS_OFF
movq %rsp,%rdi /* pt_regs pointer */
@ -1088,8 +1088,8 @@ END(\sym)
ENTRY(\sym)
XCPT_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
subq $15*8,%rsp
CFI_ADJUST_CFA_OFFSET 15*8
subq $ORIG_RAX-R15, %rsp
CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call error_entry
DEFAULT_FRAME 0
movq %rsp,%rdi /* pt_regs pointer */
@ -1106,8 +1106,8 @@ END(\sym)
ENTRY(\sym)
XCPT_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
subq $15*8,%rsp
CFI_ADJUST_CFA_OFFSET 15*8
subq $ORIG_RAX-R15, %rsp
CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call save_paranoid
DEFAULT_FRAME 0
TRACE_IRQS_OFF
@ -1497,8 +1497,8 @@ ENTRY(nmi)
INTR_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
pushq_cfi $-1
subq $15*8, %rsp
CFI_ADJUST_CFA_OFFSET 15*8
subq $ORIG_RAX-R15, %rsp
CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call save_paranoid
DEFAULT_FRAME 0
/* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */