| / |
| / Copyright (C) Igor Sysoev |
| / Copyright (C) Nginx, Inc. |
| / |
| |
| / ngx_atomic_uint_t ngx_atomic_cmp_set(ngx_atomic_t *lock, |
| / ngx_atomic_uint_t old, ngx_atomic_uint_t set); |
| / |
| / the arguments are passed on stack (%esp), 4(%esp), 8(%esp) |
| |
| .inline ngx_atomic_cmp_set,0 |
| movl (%esp), %ecx |
| movl 4(%esp), %eax |
| movl 8(%esp), %edx |
| lock |
| cmpxchgl %edx, (%ecx) |
| setz %al |
| movzbl %al, %eax |
| .end |
| |
| |
| / ngx_atomic_int_t ngx_atomic_fetch_add(ngx_atomic_t *value, |
| / ngx_atomic_int_t add); |
| / |
| / the arguments are passed on stack (%esp), 4(%esp) |
| |
| .inline ngx_atomic_fetch_add,0 |
| movl (%esp), %ecx |
| movl 4(%esp), %eax |
| lock |
| xaddl %eax, (%ecx) |
| .end |
| |
| |
| / ngx_cpu_pause() |
| / |
| / the "rep; nop" is used instead of "pause" to avoid the "[ PAUSE ]" hardware |
| / capability added by linker because Solaris/i386 does not know about it: |
| / |
| / ld.so.1: nginx: fatal: hardware capability unsupported: 0x2000 [ PAUSE ] |
| |
| .inline ngx_cpu_pause,0 |
| rep; nop |
| .end |