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Annotation of sys/arch/hppa/include/atomic.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: atomic.h,v 1.3 2007/04/26 20:52:48 miod Exp $ */
        !             2:
        !             3: /* Public Domain */
        !             4:
        !             5: #ifndef __HPPA_ATOMIC_H__
        !             6: #define __HPPA_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:        register_t eiem;
        !            14:
        !            15:        __asm __volatile("mfctl %%cr15, %0": "=r" (eiem));
        !            16:        __asm __volatile("mtctl %r0, %cr15");
        !            17:        *uip |= v;
        !            18:        __asm __volatile("mtctl %0, %%cr15":: "r" (eiem));
        !            19: }
        !            20:
        !            21: static __inline void
        !            22: atomic_clearbits_int(__volatile unsigned int *uip, unsigned int v)
        !            23: {
        !            24:        register_t eiem;
        !            25:
        !            26:        __asm __volatile("mfctl %%cr15, %0": "=r" (eiem));
        !            27:        __asm __volatile("mtctl %r0, %cr15");
        !            28:        *uip &= ~v;
        !            29:        __asm __volatile("mtctl %0, %%cr15":: "r" (eiem));
        !            30: }
        !            31:
        !            32: static __inline void
        !            33: atomic_setbits_long(__volatile unsigned long *uip, unsigned long v)
        !            34: {
        !            35:        register_t eiem;
        !            36:
        !            37:        __asm __volatile("mfctl %%cr15, %0": "=r" (eiem));
        !            38:        __asm __volatile("mtctl %r0, %cr15");
        !            39:        *uip |= v;
        !            40:        __asm __volatile("mtctl %0, %%cr15":: "r" (eiem));
        !            41: }
        !            42:
        !            43: static __inline void
        !            44: atomic_clearbits_long(__volatile unsigned long *uip, unsigned long v)
        !            45: {
        !            46:        register_t eiem;
        !            47:
        !            48:        __asm __volatile("mfctl %%cr15, %0": "=r" (eiem));
        !            49:        __asm __volatile("mtctl %r0, %cr15");
        !            50:        *uip &= ~v;
        !            51:        __asm __volatile("mtctl %0, %%cr15":: "r" (eiem));
        !            52: }
        !            53:
        !            54: #endif /* defined(_KERNEL) */
        !            55: #endif /* __HPPA_ATOMIC_H__ */