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/* $OpenBSD: atomic.h,v 1.4 2011/03/23 16:54:35 pirofti Exp $ */
/* Public Domain */
#ifndef _M68K_ATOMIC_H_
#define _M68K_ATOMIC_H_
#if defined(_KERNEL)
static __inline void
atomic_setbits_int(__volatile unsigned int *uip, unsigned int v)
{
unsigned int witness, old, new;
do {
witness = old = *uip;
new = old | v;
__asm__ __volatile__ (
"casl %0, %2, %1" : "+d"(old), "=m"(*uip) : "d"(new));
} while (old != witness);
}
static __inline void
atomic_clearbits_int(__volatile unsigned int *uip, unsigned int v)
{
unsigned int witness, old, new;
do {
witness = old = *uip;
new = old & ~v;
__asm__ __volatile__ (
"casl %0, %2, %1" : "+d"(old), "=m"(*uip) : "d"(new));
} while (old != witness);
}
#endif /* defined(_KERNEL) */
#endif /* _M68K_ATOMIC_H_ */
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