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110
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1 /
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2 / Copyright (C) Igor Sysoev
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3 /
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4
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5 / ngx_atomic_uint_t ngx_atomic_cmp_set(ngx_atomic_t *lock,
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6 / ngx_atomic_uint_t old, ngx_atomic_uint_t set);
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7 /
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8 / the arguments are passed in %rdi, %rsi, %rdx
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9 / the result is returned in the %rax
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10
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11 .inline ngx_atomic_cmp_set,0
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12 movq %rsi, %rax
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13 lock
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14 cmpxchgq %rdx, (%rdi)
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15 setz %al
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16 movzbq %al, %rax
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17 .end
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18
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19
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20 / ngx_atomic_int_t ngx_atomic_fetch_add(ngx_atomic_t *value,
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21 / ngx_atomic_int_t add);
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22 /
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23 / the arguments are passed in %rdi, %rsi
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24 / the result is returned in the %rax
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25
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26 .inline ngx_atomic_fetch_add,0
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27 movq %rsi, %rax
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28 lock
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29 xaddq %rax, (%rdi)
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30 .end
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320
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31
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32
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33 / ngx_cpu_pause()
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34
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35 .inline ngx_cpu_pause,0
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36 pause
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37 .end
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