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Annotation of sys/arch/m88k/include/atomic.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: atomic.h,v 1.3 2007/03/21 05:28:51 miod Exp $ */
                      2:
                      3: /* Public Domain */
                      4:
                      5: #ifndef __M88K_ATOMIC_H__
                      6: #define __M88K_ATOMIC_H__
                      7:
                      8: #if defined(_KERNEL)
                      9:
                     10: static __inline void
                     11: atomic_setbits_int(__volatile unsigned int *uip, unsigned int v)
                     12: {
                     13:        unsigned int old, new;
                     14:
                     15:        do {
                     16:                old = *uip;
                     17:                new = old | v;
                     18:                __asm__ __volatile__ ("xmem %0, %1, r0" : "+r"(new) : "r"(uip));
                     19:        } while (old != new);
                     20: }
                     21:
                     22: static __inline void
                     23: atomic_clearbits_int(__volatile unsigned int *uip, unsigned int v)
                     24: {
                     25:        unsigned int old, new;
                     26:
                     27:        do {
                     28:                old = *uip;
                     29:                new = old & ~v;
                     30:                __asm__ __volatile__ ("xmem %0, %1, r0" : "+r"(new) : "r"(uip));
                     31:        } while (old != new);
                     32: }
                     33:
                     34: #endif /* defined(_KERNEL) */
                     35: #endif /* __M88K_ATOMIC_H__ */