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remove little-endian assumption from arm atomic.h

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this hidden endian dependency had left big endian arm badly broken.
This commit is contained in:
Rich Felker
2012-07-08 00:05:08 -04:00
parent d93e028c6b
commit a3bdcd9376
1 changed files with 6 additions and 4 deletions
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10
arch/arm/atomic.h
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@ -99,14 +99,16 @@ static inline void a_or(volatile int *p, int v)
static inline void a_and_64(volatile uint64_t *p, uint64_t v) static inline void a_and_64(volatile uint64_t *p, uint64_t v)
{ {
a_and((int *)p, v); union { uint64_t v; uint32_t r[2]; } u = { v };
a_and((int *)p+1, v>>32); a_and((int *)p, u.r[0]);
a_and((int *)p+1, u.r[1]);
} }
static inline void a_or_64(volatile uint64_t *p, uint64_t v) static inline void a_or_64(volatile uint64_t *p, uint64_t v)
{ {
a_or((int *)p, v); union { uint64_t v; uint32_t r[2]; } u = { v };
a_or((int *)p+1, v>>32); a_or((int *)p, u.r[0]);
a_or((int *)p+1, u.r[1]);
} }
#endif #endif