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#ifndef LIBC_amd64_ATOMIC_H_
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#ifndef LIBC_amd64_ATOMIC_H_
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#define LIBC_amd64_ATOMIC_H_
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#define LIBC_amd64_ATOMIC_H_
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static inline void atomic_inc(atomic_t *val) {
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static inline void atomic_inc(atomic_t *val) {
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    asm volatile ("lock incq %0\n" : "=m" (val->count));
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    asm volatile ("lock incq %0\n" : "+m" (val->count));
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}
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}
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static inline void atomic_dec(atomic_t *val) {
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static inline void atomic_dec(atomic_t *val) {
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    asm volatile ("lock decq %0\n" : "=m" (val->count));
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    asm volatile ("lock decq %0\n" : "+m" (val->count));
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}
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}
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static inline long atomic_postinc(atomic_t *val)
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static inline long atomic_postinc(atomic_t *val)
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{
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{
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    long r;
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    long r;
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    asm volatile (
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    asm volatile (
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        "movq $1, %0\n"
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        "movq $1, %0\n"
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        "lock xaddq %0, %1\n"
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        "lock xaddq %0, %1\n"
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        : "=r" (r), "=m" (val->count)
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        : "=r" (r), "+m" (val->count)
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    );
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    );
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    return r;
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    return r;
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}
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}
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    long r;
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    long r;
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    asm volatile (
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    asm volatile (
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        "movq $-1, %0\n"
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        "movq $-1, %0\n"
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        "lock xaddq %0, %1\n"
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        "lock xaddq %0, %1\n"
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        : "=r" (r), "=m" (val->count)
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        : "=r" (r), "+m" (val->count)
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    );
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    );
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    return r;
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    return r;
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}
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}
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#define atomic_preinc(val) (atomic_postinc(val)+1)
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#define atomic_preinc(val) (atomic_postinc(val) + 1)
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#define atomic_predec(val) (atomic_postdec(val)-1)
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#define atomic_predec(val) (atomic_postdec(val) - 1)
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#endif
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#endif
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/** @}
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/** @}
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 */
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 */