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authorMarc Alff <marc.alff@sun.com>2009-11-17 17:36:39 -0700
committerMarc Alff <marc.alff@sun.com>2009-11-17 17:36:39 -0700
commit7b9fd341a00636995dc176f86e11f9e90bc0f5c9 (patch)
tree75796aac3718e3bb1b1f142e1417973d01164a1e /include/atomic
parent382ae222902919f37ae749acada48ee05e3704e6 (diff)
downloadmariadb-git-7b9fd341a00636995dc176f86e11f9e90bc0f5c9.tar.gz
Misc cleanup
Diffstat (limited to 'include/atomic')
-rw-r--r--include/atomic/x86-msvc.h96
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 c4885bb8451..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
-
-#define make_atomic_add_body(S) \
- _asm { \
- _asm mov reg_ ## S, v \
- _asm LOCK 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 cmpxchg *a, reg2_ ## S \
- _asm mov *cmp, areg_ ## S \
- _asm setz al \
- _asm movzx ret, al \
- }
-#define make_atomic_swap_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 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 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
-