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Cleaned up interlocking funcs for PPC, fixed return value of
interlocked_add.
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parent
7678791d92
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@ -752,17 +752,15 @@ __declspec(naked) long interlocked_xchg_add( long *dest, long incr )
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#elif defined(__powerpc__)
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void* interlocked_cmpxchg_ptr( void **dest, void* xchg, void* compare)
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{
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long ret;
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long ret = 0;
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long scratch;
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__asm__ __volatile__(
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"sync; "
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"0: lwarx %0,0,%2 ;"
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" xor. %1,%4,%0;"
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" bne 1f;"
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" stwcx. %3,0,%2;"
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" bne- 0b;"
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"1: "
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"sync; "
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: "=&r"(ret), "=&r"(scratch)
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: "r"(dest), "r"(xchg), "r"(compare)
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: "cr0","memory");
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@ -771,17 +769,15 @@ void* interlocked_cmpxchg_ptr( void **dest, void* xchg, void* compare)
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long interlocked_cmpxchg( long *dest, long xchg, long compare)
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{
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long ret;
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long ret = 0;
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long scratch;
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__asm__ __volatile__(
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"sync; "
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"0: lwarx %0,0,%2 ;"
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" xor. %1,%4,%0;"
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" bne 1f;"
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" stwcx. %3,0,%2;"
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" bne- 0b;"
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"1: "
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"sync; "
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: "=&r"(ret), "=&r"(scratch)
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: "r"(dest), "r"(xchg), "r"(compare)
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: "cr0","memory");
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@ -790,51 +786,44 @@ long interlocked_cmpxchg( long *dest, long xchg, long compare)
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long interlocked_xchg_add( long *dest, long incr )
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{
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void *ret __attribute__ ((aligned (4))) = &ret;
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long inc = incr;
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long ret = 0;
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long zero = 0;
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__asm__ __volatile__(
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"sync; "
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"0: lwarx %0, %3, %1;"
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" add %0, %2, %0;"
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" stwcx. %0, %3, %1;"
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" bne- 0b;"
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"sync; "
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: "=&r" (ret)
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: "r"(dest), "r"(inc), "r"(zero)
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: "r"(dest), "r"(incr), "r"(zero)
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: "cr0", "memory"
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);
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return (long)ret;
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return ret-incr;
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}
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long interlocked_xchg( long* dest, long val )
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{
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void *ret __attribute__ ((aligned (4))) = &ret;
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long ret = 0;
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__asm__ __volatile__(
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"sync; "
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"0: lwarx %0,0,%1 ;"
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" stwcx. %2,0,%1;"
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" bne- 0b;"
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"sync; "
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: "=&r"(ret)
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: "r"(dest), "r"(val)
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: "cr0","memory");
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return (long)ret;
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return ret;
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}
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void* interlocked_xchg_ptr( void** dest, void* val )
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{
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void *ret __attribute__ ((aligned (4))) = &ret;
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void *ret = NULL;
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__asm__ __volatile__(
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"sync; "
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"0: lwarx %0,0,%1 ;"
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" stwcx. %2,0,%1;"
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" bne- 0b;"
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"sync; "
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: "=&r"(ret)
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: "r"(dest), "r"(val)
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: "cr0","memory");
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return (void*)ret;
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return ret;
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}
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#elif defined(__sparc__) && defined(__sun__)
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