/* $OpenBSD: atomic.h,v 1.3 2007/03/21 05:28:20 miod 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__ */