diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/atomic.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/arch/powerpc/atomic.h b/arch/powerpc/atomic.h index a83764d9..4a47064a 100644 --- a/arch/powerpc/atomic.h +++ b/arch/powerpc/atomic.h @@ -25,12 +25,13 @@ static inline int a_ctz_64(uint64_t x) static inline int a_cas(volatile int *p, int t, int s) { - - __asm__( "1: lwarx 10, 0, %1\n" - " stwcx. %3, 0, %1\n" - " bne- 1b\n" - " mr %0, 10\n" - : "=r"(t) : "r"(p), "r"(t), "r"(s) : "memory" ); + __asm__("1: lwarx %0, 0, %1\n" + " cmpw %0, %2\n" + " bne 1f\n" + " stwcx. %3, 0, %1\n" + " bne- 1b\n" + "1: \n" + : "=&r"(t) : "r"(p), "r"(t), "r"(s) : "cc", "memory" ); return t; } |