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25 lines
393 B
25 lines
393 B
3 years ago
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/*
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* @(#)x86.uslc
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*
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* UnixWare has threads in libthread, but OpenServer doesn't (yet).
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*
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* For cc/x86, 0 is clear, 1 is set.
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*/
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#if defined(__USLC__)
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asm int
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_tsl_set(void *tsl)
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{
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%mem tsl
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movl tsl, %ecx
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movl $1, %eax
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lock
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xchgb (%ecx),%al
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xorl $1,%eax
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}
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#endif
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#define MUTEX_SET(tsl) _tsl_set(tsl)
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#define MUTEX_UNSET(tsl) (*(tsl) = 0)
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#define MUTEX_INIT(tsl) MUTEX_UNSET(tsl)
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