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/* $OpenBSD: _atomic_lock.c,v 1.2 2002/10/11 19:08:41 marc Exp $ */
/*
* Atomic lock for hppa
*/
#include "spinlock.h"
int
_atomic_lock(volatile register_t *lock)
{
register register_t old;
__asm__("ldcws 0(%1), %0" : "=r" (old): "r" (lock));
return (old == _SPINLOCK_LOCKED);
}
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