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| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-14 19:43:21 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-14 19:43:21 -0800 |
| commit | 8d5c315059460e665c804d5a9b641f7f0a1e9dd7 (patch) | |
| tree | b9c598b2ac7a4fd7cf121ce733b98b0f18b8a1df /arch/arm/kernel/semaphore.c | |
| parent | a9df3d0f312f4b1aefec76ae5ee86cccbf7cd4e0 (diff) | |
| parent | 3f471126ee53feb5e9b210ea2f525ed3bb9b7a7f (diff) | |
Merge master.kernel.org:/home/rmk/linux-2.6-arm
Diffstat (limited to 'arch/arm/kernel/semaphore.c')
| -rw-r--r-- | arch/arm/kernel/semaphore.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/arch/arm/kernel/semaphore.c b/arch/arm/kernel/semaphore.c index 4c31f292305..981fe5c6ccb 100644 --- a/arch/arm/kernel/semaphore.c +++ b/arch/arm/kernel/semaphore.c @@ -177,41 +177,42 @@ int __down_trylock(struct semaphore * sem) * ip contains the semaphore pointer on entry. Save the C-clobbered * registers (r0 to r3 and lr), but not ip, as we use it as a return * value in some cases.. + * To remain AAPCS compliant (64-bit stack align) we save r4 as well. */ asm(" .section .sched.text,\"ax\",%progbits \n\ .align 5 \n\ .globl __down_failed \n\ __down_failed: \n\ - stmfd sp!, {r0 - r3, lr} \n\ + stmfd sp!, {r0 - r4, lr} \n\ mov r0, ip \n\ bl __down \n\ - ldmfd sp!, {r0 - r3, pc} \n\ + ldmfd sp!, {r0 - r4, pc} \n\ \n\ .align 5 \n\ .globl __down_interruptible_failed \n\ __down_interruptible_failed: \n\ - stmfd sp!, {r0 - r3, lr} \n\ + stmfd sp!, {r0 - r4, lr} \n\ mov r0, ip \n\ bl __down_interruptible \n\ mov ip, r0 \n\ - ldmfd sp!, {r0 - r3, pc} \n\ + ldmfd sp!, {r0 - r4, pc} \n\ \n\ .align 5 \n\ .globl __down_trylock_failed \n\ __down_trylock_failed: \n\ - stmfd sp!, {r0 - r3, lr} \n\ + stmfd sp!, {r0 - r4, lr} \n\ mov r0, ip \n\ bl __down_trylock \n\ mov ip, r0 \n\ - ldmfd sp!, {r0 - r3, pc} \n\ + ldmfd sp!, {r0 - r4, pc} \n\ \n\ .align 5 \n\ .globl __up_wakeup \n\ __up_wakeup: \n\ - stmfd sp!, {r0 - r3, lr} \n\ + stmfd sp!, {r0 - r4, lr} \n\ mov r0, ip \n\ bl __up \n\ - ldmfd sp!, {r0 - r3, pc} \n\ + ldmfd sp!, {r0 - r4, pc} \n\ "); EXPORT_SYMBOL(__down_failed); |