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[WebAssebmly] Implement a_cas() in arch/wasm32/atomic_arch.h (#36)

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Sam Clegg 2018-01-13 08:46:40 -08:00 committed by GitHub
parent 0bf0e9f1fe
commit 0c827335e4
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1 changed files with 8 additions and 1 deletions
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9
arch/wasm32/atomic_arch.h
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@ -6,6 +6,13 @@
#define a_barrier() syscall(__NR_membarrier) #define a_barrier() syscall(__NR_membarrier)
#define a_cas(p, t, s) (abort(), s) #define a_cas a_cas
static inline int a_cas(volatile int *p, int t, int s)
{
int old = *p;
if (old == t)
*p = s;
return old;
}
#define a_crash() abort() #define a_crash() abort()