diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86_64/atomic.h | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/arch/x86_64/atomic.h b/arch/x86_64/atomic.h index e74e4535..7a665c1b 100644 --- a/arch/x86_64/atomic.h +++ b/arch/x86_64/atomic.h @@ -5,33 +5,32 @@ static inline int a_ctz_64(uint64_t x) { - int r; - __asm__( "bsf %1,%0 ; jnz 1f ; bsf %2,%0 ; addl $32,%0\n1:" - : "=r"(r) : "r"((unsigned)x), "r"((unsigned)(x>>32)) ); + long r; + __asm__( "bsf %1,%0" : "=r"(r) : "r"(x) ); return r; } static inline void a_and_64(volatile uint64_t *p, uint64_t v) { - __asm__( "lock ; andl %1, (%0) ; lock ; andl %2, 4(%0)" - : : "r"((long *)p), "r"((unsigned)v), "r"((unsigned)(v>>32)) : "memory" ); + __asm__( "lock ; andq %1, %0" + : "=m"(*(long *)p) : "r"(v) : "memory" ); } static inline void a_or_64(volatile uint64_t *p, uint64_t v) { - __asm__( "lock ; orl %1, (%0) ; lock ; orl %2, 4(%0)" - : : "r"((long *)p), "r"((unsigned)v), "r"((unsigned)(v>>32)) : "memory" ); + __asm__( "lock ; orq %1, %0" + : "=m"(*(long *)p) : "r"(v) : "memory" ); } static inline void a_store_l(volatile void *p, long x) { - __asm__( "movl %1, %0" : "=m"(*(long *)p) : "r"(x) : "memory" ); + __asm__( "movq %1, %0" : "=m"(*(long *)p) : "r"(x) : "memory" ); } static inline void a_or_l(volatile void *p, long v) { - __asm__( "lock ; orl %1, %0" + __asm__( "lock ; orq %1, %0" : "=m"(*(long *)p) : "r"(v) : "memory" ); } |