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Add spinlocks for Darwin/PPC

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This commit is contained in:
gbeauche 2004-01-18 22:05:28 +00:00
parent 321fcfefe5
commit 5e154ad65f
1 changed files with 6 additions and 6 deletions
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12
SheepShaver/src/Unix/sysdeps.h
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@ -217,16 +217,16 @@ static inline uint64 tswap64(uint64 x) { return bswap_64(x); }
// spin locks
#ifdef __GNUC__
#ifdef __powerpc__
#if defined(__powerpc__) || defined(__ppc__)
#define HAVE_TEST_AND_SET 1
static inline int testandset(volatile int *p)
{
int ret;
__asm__ __volatile__("0: lwarx %0,0,%1 ;"
" xor. %0,%3,%0;"
" bne 1f;"
" stwcx. %2,0,%1;"
" bne- 0b;"
__asm__ __volatile__("0: lwarx %0,0,%1\n"
" xor. %0,%3,%0\n"
" bne 1f\n"
" stwcx. %2,0,%1\n"
" bne- 0b\n"
"1: "
: "=&r" (ret)
: "r" (p), "r" (1), "r" (0)