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Annotation of sys/arch/mips64/include/atomic.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: atomic.h,v 1.3 2007/03/23 21:07:36 miod Exp $ */
                      2:
                      3: /* Public Domain */
                      4:
                      5: #ifndef __MIPS64_ATOMIC_H__
                      6: #define __MIPS64_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 tmp;
                     14:
                     15:        __asm__ __volatile__ (
                     16:        "1:     ll      %0,     0(%1)\n"
                     17:        "       or      %0,     %2,     %0\n"
                     18:        "       sc      %0,     0(%1)\n"
                     19:        "       beqz    %0,     1b\n"
                     20:        "        nop\n" :
                     21:                "+r"(tmp) :
                     22:                "r"(uip), "r"(v) : "memory");
                     23: }
                     24:
                     25: static __inline void
                     26: atomic_clearbits_int(__volatile unsigned int *uip, unsigned int v)
                     27: {
                     28:        unsigned int tmp;
                     29:
                     30:        __asm__ __volatile__ (
                     31:        "1:     ll      %0,     0(%1)\n"
                     32:        "       and     %0,     %2,     %0\n"
                     33:        "       sc      %0,     0(%1)\n"
                     34:        "       beqz    %0,     1b\n"
                     35:        "        nop\n" :
                     36:                "+r"(tmp) :
                     37:                "r"(uip), "r"(~v) : "memory");
                     38: }
                     39:
                     40: #endif /* defined(_KERNEL) */
                     41: #endif /* __MIPS64_ATOMIC_H__ */