atomic.c (BIT_OFFSET): Define.
2014-01-25 Walter Lee <walt@tilera.com> * config/tilepro/atomic.c (BIT_OFFSET): Define. (__atomic_subword_cmpxchg): Use BIT_OFFSET. (__atomic_subword): Ditto. From-SVN: r207086
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@ -1,3 +1,9 @@
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2014-01-25 Walter Lee <walt@tilera.com>
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* config/tilepro/atomic.c (BIT_OFFSET): Define.
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(__atomic_subword_cmpxchg): Use BIT_OFFSET.
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(__atomic_subword): Ditto.
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2014-01-25 Walter Lee <walt@tilera.com>
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* config/tilepro/atomic.c (__atomic_do_and_fetch): Add
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@ -135,6 +135,12 @@ __atomic_exchange_##size(volatile type* ptr, type val, int model) \
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__atomic_exchange_methods (int, 4)
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__atomic_exchange_methods (long long, 8)
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#ifdef __LITTLE_ENDIAN__
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#define BIT_OFFSET(n, type) ((n) * 8)
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#else
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#define BIT_OFFSET(n, type) ((4 - sizeof(type) - (n)) * 8)
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#endif
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/* Subword methods require the same approach for both TILEPro and
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TILE-Gx. We load the background data for the word, insert the
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desired subword piece, then compare-and-exchange it into place. */
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@ -150,7 +156,7 @@ __atomic_compare_exchange_##size(volatile type* ptr, type* guess, \
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{ \
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pre_atomic_barrier(models); \
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unsigned int *p = (unsigned int *)((unsigned long)ptr & ~3UL); \
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const int shift = ((unsigned long)ptr & 3UL) * 8; \
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const int shift = BIT_OFFSET((unsigned long)ptr & 3UL, type); \
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const unsigned int valmask = (1 << (sizeof(type) * 8)) - 1; \
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const unsigned int bgmask = ~(valmask << shift); \
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unsigned int oldword = *p; \
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@ -177,7 +183,7 @@ proto \
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{ \
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top \
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unsigned int *p = (unsigned int *)((unsigned long)ptr & ~3UL); \
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const int shift = ((unsigned long)ptr & 3UL) * 8; \
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const int shift = BIT_OFFSET((unsigned long)ptr & 3UL, type); \
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const unsigned int valmask = (1 << (sizeof(type) * 8)) - 1; \
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const unsigned int bgmask = ~(valmask << shift); \
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unsigned int oldword, xword = *p; \
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