diff options
| author | Michael Stapelberg <stapelberg@debian.org> | 2014-06-19 09:22:53 +0200 |
|---|---|---|
| committer | Michael Stapelberg <stapelberg@debian.org> | 2014-06-19 09:22:53 +0200 |
| commit | 8a39ee361feb9bf46d728ff1ba4f07ca1d9610b1 (patch) | |
| tree | 4449f2036cccf162e8417cc5841a35815b3e7ac5 /src/pkg/runtime/atomic_arm.c | |
| parent | c8bf49ef8a92e2337b69c14b9b88396efe498600 (diff) | |
| download | golang-8a39ee361feb9bf46d728ff1ba4f07ca1d9610b1.tar.gz | |
Imported Upstream version 1.3upstream/1.3
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) { |