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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-07-15 10:06:42 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-07-15 10:06:42 +0100
commit4aa96ccf9ee35cdbd0d423e87a4d551019570218 (patch)
treedca6322681df2e8f33f65c07defce24db68f645c /arch/arm/kernel/entry-header.S
parentcb5fd904f0f14866ab76ec1f6ca3469896e4e2cf (diff)
parent8f2ffa00fb3c05ec0659cd7b056c4e8e106072f1 (diff)
Merge branch 'kprobes-thumb' of git://git.yxit.co.uk/linux into devel-stable
Diffstat (limited to 'arch/arm/kernel/entry-header.S')
-rw-r--r--arch/arm/kernel/entry-header.S12
1 files changed, 5 insertions, 7 deletions
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index 051166c2a93..83e29adced6 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -121,15 +121,13 @@
.endm
#else /* CONFIG_THUMB2_KERNEL */
.macro svc_exit, rpsr
+ ldr lr, [sp, #S_SP] @ top of the stack
+ ldrd r0, r1, [sp, #S_LR] @ calling lr and pc
clrex @ clear the exclusive monitor
- ldr r0, [sp, #S_SP] @ top of the stack
- ldr r1, [sp, #S_PC] @ return address
- tst r0, #4 @ orig stack 8-byte aligned?
- stmdb r0, {r1, \rpsr} @ rfe context
+ stmdb lr!, {r0, r1, \rpsr} @ calling lr and rfe context
ldmia sp, {r0 - r12}
- ldr lr, [sp, #S_LR]
- addeq sp, sp, #S_FRAME_SIZE - 8 @ aligned
- addne sp, sp, #S_FRAME_SIZE - 4 @ not aligned
+ mov sp, lr
+ ldr lr, [sp], #4
rfeia sp!
.endm