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878ddf1f 1;------------------------------------------------------------------------------\r
2;\r
3; Copyright (c) 2006, Intel Corporation\r
4; All rights reserved. This program and the accompanying materials\r
5; are licensed and made available under the terms and conditions of the BSD License\r
6; which accompanies this distribution. The full text of the license may be found at\r
7; http://opensource.org/licenses/bsd-license.php\r
8;\r
9; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
10; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
11;\r
12; Module Name:\r
13;\r
14; InterlockedCompareExchange64.Asm\r
15;\r
16; Abstract:\r
17;\r
18; InterlockedCompareExchange64 function\r
19;\r
20; Notes:\r
21;\r
22;------------------------------------------------------------------------------\r
23\r
24 .586P\r
25 .model flat,C\r
26 .code\r
27\r
28;------------------------------------------------------------------------------\r
29; UINT64\r
30; EFIAPI\r
31; InterlockedCompareExchange64 (\r
32; IN UINT64 *Value,\r
33; IN UINT64 CompareValue,\r
34; IN UINT64 ExchangeValue\r
35; );\r
36;------------------------------------------------------------------------------\r
37InternalSyncCompareExchange64 PROC USES esi ebx\r
38 mov esi, [esp + 12]\r
39 mov eax, [esp + 16]\r
40 mov edx, [esp + 20]\r
41 mov ebx, [esp + 24]\r
42 mov ecx, [esp + 28]\r
43 lock cmpxchg8b qword ptr [esi]\r
44 ret\r
45InternalSyncCompareExchange64 ENDP\r
46\r
47 END\r