diff options
Diffstat (limited to 'include/ntapi/bits/i386/nt_atomic_i386_asm__gcc.h')
| -rw-r--r-- | include/ntapi/bits/i386/nt_atomic_i386_asm__gcc.h | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/include/ntapi/bits/i386/nt_atomic_i386_asm__gcc.h b/include/ntapi/bits/i386/nt_atomic_i386_asm__gcc.h index 04c0a8f..23260e9 100644 --- a/include/ntapi/bits/i386/nt_atomic_i386_asm__gcc.h +++ b/include/ntapi/bits/i386/nt_atomic_i386_asm__gcc.h @@ -424,7 +424,9 @@ static __inline__ void at_store( intptr_t val) { __asm__( - "mov %1, %0" + "mov %1, %0;" + "lock;" + "orl $0,%0;" : "=m" (*dst) : "r" (val) : "memory"); @@ -436,7 +438,9 @@ static __inline__ void at_store_32( int32_t val) { __asm__( - "mov %1, %0" + "mov %1, %0;" + "lock;" + "orl $0,%0;" : "=m" (*dst) : "r" (val) : "memory"); @@ -445,15 +449,24 @@ static __inline__ void at_store_32( static __inline__ void at_store_64( volatile int64_t * dst, - int64_t val) + int64_t xchg) { - __asm__( - "mov %1, %0" - : "=m" (*dst) - : "r" (val) - : "memory"); -} + int64_t cmp; + int64_t prev; + do { + prev = *dst; + cmp = prev; + + __atomic_compare_exchange_n( + dst, + &cmp, + xchg, + 0, + __ATOMIC_SEQ_CST, + __ATOMIC_SEQ_CST); + } while (cmp != prev); +} static __inline__ int at_bsf( unsigned int * index, |