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110
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1 /
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2 / Copyright (C) Igor Sysoev
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660
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3 / Copyright (C) Nginx, Inc.
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110
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4 /
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5
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6 / ngx_atomic_uint_t ngx_atomic_cmp_set(ngx_atomic_t *lock,
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7 / ngx_atomic_uint_t old, ngx_atomic_uint_t set);
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8 /
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488
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9 / the arguments are passed on stack (%esp), 4(%esp), 8(%esp)
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110
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10
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11 .inline ngx_atomic_cmp_set,0
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12 movl (%esp), %ecx
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13 movl 4(%esp), %eax
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14 movl 8(%esp), %edx
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15 lock
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16 cmpxchgl %edx, (%ecx)
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17 setz %al
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18 movzbl %al, %eax
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19 .end
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20
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21
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22 / ngx_atomic_int_t ngx_atomic_fetch_add(ngx_atomic_t *value,
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23 / ngx_atomic_int_t add);
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24 /
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488
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25 / the arguments are passed on stack (%esp), 4(%esp)
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26
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27 .inline ngx_atomic_fetch_add,0
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28 movl (%esp), %ecx
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29 movl 4(%esp), %eax
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30 lock
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31 xaddl %eax, (%ecx)
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32 .end
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320
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33
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34
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35 / ngx_cpu_pause()
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488
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36 /
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37 / the "rep; nop" is used instead of "pause" to avoid the "[ PAUSE ]" hardware
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38 / capability added by linker because Solaris/i386 does not know about it:
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39 /
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40 / ld.so.1: nginx: fatal: hardware capability unsupported: 0x2000 [ PAUSE ]
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41
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42 .inline ngx_cpu_pause,0
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488
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43 rep; nop
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44 .end
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