diff options
Diffstat (limited to 'src/pkg/runtime/atomic_arm.c')
| -rw-r--r-- | src/pkg/runtime/atomic_arm.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/pkg/runtime/atomic_arm.c b/src/pkg/runtime/atomic_arm.c index 0b54840cc..9193d599d 100644 --- a/src/pkg/runtime/atomic_arm.c +++ b/src/pkg/runtime/atomic_arm.c @@ -123,6 +123,19 @@ runtime·xadd64(uint64 volatile *addr, int64 delta) #pragma textflag 7 uint64 +runtime·xchg64(uint64 volatile *addr, uint64 v) +{ + uint64 res; + + runtime·lock(LOCK(addr)); + res = *addr; + *addr = v; + runtime·unlock(LOCK(addr)); + return res; +} + +#pragma textflag 7 +uint64 runtime·atomicload64(uint64 volatile *addr) { uint64 res; |