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 b1e97b27d..d914475c7 100644 --- a/src/pkg/runtime/atomic_arm.c +++ b/src/pkg/runtime/atomic_arm.c @@ -42,6 +42,19 @@ runtime·xchg(uint32 volatile* addr, uint32 v) } #pragma textflag NOSPLIT +void* +runtime·xchgp(void* volatile* addr, void* v) +{ + void *old; + + for(;;) { + old = *addr; + if(runtime·casp(addr, old, v)) + return old; + } +} + +#pragma textflag NOSPLIT void runtime·procyield(uint32 cnt) { |