From efc3624c9419cad3cca93dfabb7b12664773d2b1 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Wed, 5 Nov 2008 18:39:27 +0000 Subject: powerpc: Tell gcc when we clobber the carry in inline asm We have several instances of inline assembly code that use the addic or addic. instructions, but don't include XER in the list of clobbers. The addic and addic. instructions affect the carry bit, which is in the XER register. This adds "xer" to the list of clobbers for those inline asm statements that use addic or addic. and didn't already have it. Signed-off-by: Paul Mackerras --- arch/powerpc/include/asm/spinlock.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/powerpc/include/asm/spinlock.h') diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h index f56a843f4705..36864364e601 100644 --- a/arch/powerpc/include/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -277,7 +277,7 @@ static inline void __raw_read_unlock(raw_rwlock_t *rw) bne- 1b" : "=&r"(tmp) : "r"(&rw->lock) - : "cr0", "memory"); + : "cr0", "xer", "memory"); } static inline void __raw_write_unlock(raw_rwlock_t *rw) -- cgit v1.2.3