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| author | Rich Felker <dalias@aerifal.cx> | 2014-07-19 15:57:48 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2014-07-19 15:57:48 -0400 |
| commit | 1456b7ae6b72a4f2c446243acdde7c951268d4ab (patch) | |
| tree | 02526795c601affa9d0b878ae536dfb5f1aafa33 /arch/powerpc | |
| parent | bcad48439494820989f5867c3f8ccfa6aae2909f (diff) | |
| download | musl-1456b7ae6b72a4f2c446243acdde7c951268d4ab.tar.gz musl-1456b7ae6b72a4f2c446243acdde7c951268d4ab.tar.bz2 musl-1456b7ae6b72a4f2c446243acdde7c951268d4ab.tar.xz musl-1456b7ae6b72a4f2c446243acdde7c951268d4ab.zip | |
fix missing barrier instructions in powerpc atomic asm
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/atomic.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/powerpc/atomic.h b/arch/powerpc/atomic.h index a1049bdb..c4ad40cd 100644 --- a/arch/powerpc/atomic.h +++ b/arch/powerpc/atomic.h @@ -25,11 +25,14 @@ static inline int a_ctz_64(uint64_t x) static inline int a_cas(volatile int *p, int t, int s) { - __asm__("1: lwarx %0, 0, %4\n" + __asm__("\n" + " sync\n" + "1: lwarx %0, 0, %4\n" " cmpw %0, %2\n" " bne 1f\n" " stwcx. %3, 0, %4\n" " bne- 1b\n" + " isync\n" "1: \n" : "=&r"(t), "+m"(*p) : "r"(t), "r"(s), "r"(p) : "cc", "memory" ); return t; |