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Cleaned up interlocking funcs for PPC, fixed return value of 

interlocked_add.
This commit is contained in:
Marcus Meissner 2002-08-20 00:01:15 +00:00 committed by Alexandre Julliard
parent 7678791d92
commit 3a17a87c81
1 changed files with 14 additions and 25 deletions
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39
library/port.c
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@ -752,89 +752,78 @@ __declspec(naked) long interlocked_xchg_add( long *dest, long incr )
#elif defined(__powerpc__)
void* interlocked_cmpxchg_ptr( void **dest, void* xchg, void* compare)
{
long ret;
long ret = 0;
long scratch;
__asm__ __volatile__(
"sync; "
"0: lwarx %0,0,%2 ;"
" xor. %1,%4,%0;"
" bne 1f;"
" stwcx. %3,0,%2;"
" bne- 0b;"
"1: "
"sync; "
: "=&r"(ret), "=&r"(scratch)
: "r"(dest), "r"(xchg), "r"(compare)
: "cr0", "memory");
: "cr0","memory");
return (void*)ret;
}
long interlocked_cmpxchg( long *dest, long xchg, long compare)
{
long ret;
long ret = 0;
long scratch;
__asm__ __volatile__(
"sync; "
"0: lwarx %0,0,%2 ;"
" xor. %1,%4,%0;"
" bne 1f;"
" stwcx. %3,0,%2;"
" bne- 0b;"
"1: "
"sync; "
: "=&r"(ret), "=&r"(scratch)
: "r"(dest), "r"(xchg), "r"(compare)
: "cr0", "memory");
: "cr0","memory");
return ret;
}
long interlocked_xchg_add( long *dest, long incr )
{
void *ret __attribute__ ((aligned (4))) = &ret;
long inc = incr;
long ret = 0;
long zero = 0;
__asm__ __volatile__(
"sync; "
"0: lwarx %0, %3, %1;"
" add %0, %2, %0;"
" stwcx. %0, %3, %1;"
" bne- 0b;"
"sync; "
: "=&r"(ret)
: "r"(dest), "r"(inc), "r"(zero)
: "=&r" (ret)
: "r"(dest), "r"(incr), "r"(zero)
: "cr0", "memory"
);
return (long)ret;
return ret-incr;
}
long interlocked_xchg( long* dest, long val )
{
void *ret __attribute__ ((aligned (4))) = &ret;
long ret = 0;
__asm__ __volatile__(
"sync; "
"0: lwarx %0,0,%1 ;"
" stwcx. %2,0,%1;"
" bne- 0b;"
"sync; "
: "=&r"(ret)
: "r"(dest), "r"(val)
: "cr0", "memory");
return (long)ret;
: "cr0","memory");
return ret;
}
void* interlocked_xchg_ptr( void** dest, void* val )
{
void *ret __attribute__ ((aligned (4))) = &ret;
void *ret = NULL;
__asm__ __volatile__(
"sync; "
"0: lwarx %0,0,%1 ;"
" stwcx. %2,0,%1;"
" bne- 0b;"
"sync; "
: "=&r"(ret)
: "r"(dest), "r"(val)
: "cr0", "memory");
return (void*)ret;
: "cr0","memory");
return ret;
}
#elif defined(__sparc__) && defined(__sun__)