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43 lines
1015 B
Plaintext
43 lines
1015 B
Plaintext
/
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/ Copyright (C) Igor Sysoev
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/
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/ ngx_atomic_uint_t ngx_atomic_cmp_set(ngx_atomic_t *lock,
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/ ngx_atomic_uint_t old, ngx_atomic_uint_t set);
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/
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/ the arguments are passed in %rdi, %rsi, %rdx
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/ the result is returned in the %rax
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.inline ngx_atomic_cmp_set,0
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movq %rsi, %rax
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lock
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cmpxchgq %rdx, (%rdi)
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setz %al
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movzbq %al, %rax
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.end
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/ ngx_atomic_int_t ngx_atomic_fetch_add(ngx_atomic_t *value,
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/ ngx_atomic_int_t add);
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/
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/ the arguments are passed in %rdi, %rsi
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/ the result is returned in the %rax
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.inline ngx_atomic_fetch_add,0
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movq %rsi, %rax
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lock
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xaddq %rax, (%rdi)
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.end
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/ ngx_cpu_pause()
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/
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/ the "rep; nop" is used instead of "pause" to avoid the "[ PAUSE ]" hardware
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/ capability added by linker because Solaris/amd64 does not know about it:
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/
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/ ld.so.1: nginx: fatal: hardware capability unsupported: 0x2000 [ PAUSE ]
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.inline ngx_cpu_pause,0
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rep; nop
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.end
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