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Diffstat (limited to 'include/atomic/x86-msvc.h')
| -rw-r--r-- | include/atomic/x86-msvc.h | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/include/atomic/x86-msvc.h b/include/atomic/x86-msvc.h deleted file mode 100644 index 2a2cfe70de9..00000000000 --- a/include/atomic/x86-msvc.h +++ /dev/null @@ -1,96 +0,0 @@ -/* Copyright (C) 2006 MySQL AB - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; version 2 of the License. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - -/* - XXX 64-bit atomic operations can be implemented using - cmpxchg8b, if necessary -*/ - -// Would it be better to use intrinsics ? -// (InterlockedCompareExchange, InterlockedCompareExchange16 -// InterlockedExchangeAdd, InterlockedExchange) - -#ifndef _atomic_h_cleanup_ -#define _atomic_h_cleanup_ "atomic/x86-msvc.h" - -#define MY_ATOMIC_MODE "msvc-x86" LOCK_prefix - -#define make_atomic_add_body(S) \ - _asm { \ - _asm mov reg_ ## S, v \ - _asm LOCK_prefix xadd *a, reg_ ## S \ - _asm movzx v, reg_ ## S \ - } -#define make_atomic_cas_body(S) \ - _asm { \ - _asm mov areg_ ## S, *cmp \ - _asm mov reg2_ ## S, set \ - _asm LOCK_prefix cmpxchg *a, reg2_ ## S \ - _asm mov *cmp, areg_ ## S \ - _asm setz al \ - _asm movzx ret, al \ - } -#define make_atomic_fas_body(S) \ - _asm { \ - _asm mov reg_ ## S, v \ - _asm xchg *a, reg_ ## S \ - _asm mov v, reg_ ## S \ - } - -#ifdef MY_ATOMIC_MODE_DUMMY -#define make_atomic_load_body(S) ret=*a -#define make_atomic_store_body(S) *a=v -#else -/* - Actually 32-bit reads/writes are always atomic on x86 - But we add LOCK_prefix here anyway to force memory barriers -*/ -#define make_atomic_load_body(S) \ - _asm { \ - _asm mov areg_ ## S, 0 \ - _asm mov reg2_ ## S, areg_ ## S \ - _asm LOCK_prefix cmpxchg *a, reg2_ ## S \ - _asm mov ret, areg_ ## S \ - } -#define make_atomic_store_body(S) \ - _asm { \ - _asm mov reg_ ## S, v \ - _asm xchg *a, reg_ ## S \ - } -#endif - -#define reg_8 al -#define reg_16 ax -#define reg_32 eax -#define areg_8 al -#define areg_16 ax -#define areg_32 eax -#define reg2_8 bl -#define reg2_16 bx -#define reg2_32 ebx - -#else /* cleanup */ - -#undef reg_8 -#undef reg_16 -#undef reg_32 -#undef areg_8 -#undef areg_16 -#undef areg_32 -#undef reg2_8 -#undef reg2_16 -#undef reg2_32 -#endif - |