diff options
Diffstat (limited to 'intern/atomic/intern/atomic_ops_unix.h')
| -rw-r--r-- | intern/atomic/intern/atomic_ops_unix.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/intern/atomic/intern/atomic_ops_unix.h b/intern/atomic/intern/atomic_ops_unix.h index bf54750ea0d..55c00024244 100644 --- a/intern/atomic/intern/atomic_ops_unix.h +++ b/intern/atomic/intern/atomic_ops_unix.h @@ -129,23 +129,24 @@ ATOMIC_INLINE uint32_t atomic_cas_uint32(uint32_t *v, uint32_t old, uint32_t _ne #elif (defined(__i386__) || defined(__amd64__) || defined(__x86_64__)) ATOMIC_INLINE uint32_t atomic_add_uint32(uint32_t *p, uint32_t x) { + uint32_t ret = x; asm volatile ( "lock; xaddl %0, %1;" - : "+r" (x), "=m" (*p) /* Outputs. */ + : "+r" (ret), "=m" (*p) /* Outputs. */ : "m" (*p) /* Inputs. */ ); - return x; + return ret+x; } ATOMIC_INLINE uint32_t atomic_sub_uint32(uint32_t *p, uint32_t x) { - x = (uint32_t)(-(int32_t)x); + ret = (uint32_t)(-(int32_t)x); asm volatile ( "lock; xaddl %0, %1;" - : "+r" (x), "=m" (*p) /* Outputs. */ + : "+r" (ret), "=m" (*p) /* Outputs. */ : "m" (*p) /* Inputs. */ ); - return x; + return ret-x; } ATOMIC_INLINE uint32_t atomic_cas_uint32(uint32_t *v, uint32_t old, uint32_t _new) |