diff options
Diffstat (limited to 'EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/InterlockedCompareExchange64.asm')
| -rw-r--r-- | EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/InterlockedCompareExchange64.asm | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/InterlockedCompareExchange64.asm b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/InterlockedCompareExchange64.asm new file mode 100644 index 0000000..965f195 --- /dev/null +++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/InterlockedCompareExchange64.asm @@ -0,0 +1,45 @@ +; Copyright (c) 2004, Intel Corporation +; All rights reserved. This program and the accompanying materials +; are licensed and made available under the terms and conditions of the BSD License +; which accompanies this distribution. The full text of the license may be found at +; http://opensource.org/licenses/bsd-license.php +; +; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +; +; Module Name: +; +; InterlockedCompareExchange64.Asm +; +; Abstract: +; +; InterlockedCompareExchange64 function +; +; Notes: +; +;------------------------------------------------------------------------------ + + .586P + .model flat,C + .code + +;------------------------------------------------------------------------------ +; UINT64 +; EFIAPI +; InternalSyncCompareExchange64 ( +; IN UINT64 *Value, +; IN UINT64 CompareValue, +; IN UINT64 ExchangeValue +; ); +;------------------------------------------------------------------------------ +InternalSyncCompareExchange64 PROC USES esi ebx + mov esi, [esp + 12] + mov eax, [esp + 16] + mov edx, [esp + 20] + mov ebx, [esp + 24] + mov ecx, [esp + 28] + lock cmpxchg8b qword ptr [esi] + ret +InternalSyncCompareExchange64 ENDP + + END |