From 6a5411729539fe21117f406699a69974b320eb7e Mon Sep 17 00:00:00 2001 From: Yu Ping Date: Thu, 19 Mar 2020 03:34:52 +0800 Subject: remove nginx build directory Signed-off-by: Yu Ping Change-Id: I73aba722f06f4cc4be484e3d5f4631225d09de83 --- nginx/src/os/unix/ngx_gcc_atomic_amd64.h | 82 -------------------------------- 1 file changed, 82 deletions(-) delete mode 100644 nginx/src/os/unix/ngx_gcc_atomic_amd64.h (limited to 'nginx/src/os/unix/ngx_gcc_atomic_amd64.h') diff --git a/nginx/src/os/unix/ngx_gcc_atomic_amd64.h b/nginx/src/os/unix/ngx_gcc_atomic_amd64.h deleted file mode 100644 index 159a297..0000000 --- a/nginx/src/os/unix/ngx_gcc_atomic_amd64.h +++ /dev/null @@ -1,82 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#if (NGX_SMP) -#define NGX_SMP_LOCK "lock;" -#else -#define NGX_SMP_LOCK -#endif - - -/* - * "cmpxchgq r, [m]": - * - * if (rax == [m]) { - * zf = 1; - * [m] = r; - * } else { - * zf = 0; - * rax = [m]; - * } - * - * - * The "r" is any register, %rax (%r0) - %r16. - * The "=a" and "a" are the %rax register. - * Although we can return result in any register, we use "a" because it is - * used in cmpxchgq anyway. The result is actually in %al but not in $rax, - * however as the code is inlined gcc can test %al as well as %rax. - * - * The "cc" means that flags were changed. - */ - -static ngx_inline ngx_atomic_uint_t -ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, - ngx_atomic_uint_t set) -{ - u_char res; - - __asm__ volatile ( - - NGX_SMP_LOCK - " cmpxchgq %3, %1; " - " sete %0; " - - : "=a" (res) : "m" (*lock), "a" (old), "r" (set) : "cc", "memory"); - - return res; -} - - -/* - * "xaddq r, [m]": - * - * temp = [m]; - * [m] += r; - * r = temp; - * - * - * The "+r" is any register, %rax (%r0) - %r16. - * The "cc" means that flags were changed. - */ - -static ngx_inline ngx_atomic_int_t -ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add) -{ - __asm__ volatile ( - - NGX_SMP_LOCK - " xaddq %0, %1; " - - : "+r" (add) : "m" (*value) : "cc", "memory"); - - return add; -} - - -#define ngx_memory_barrier() __asm__ volatile ("" ::: "memory") - -#define ngx_cpu_pause() __asm__ ("pause") -- cgit 1.2.3-korg