1;------------------------------------------------------------------------------
2;
3; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
4; This program and the accompanying materials
5; are licensed and made available under the terms and conditions of the BSD License
6; which accompanies this distribution.  The full text of the license may be found at
7; http://opensource.org/licenses/bsd-license.php.
8;
9; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
11;
12; Module Name:
13;
14;   InterlockedCompareExchange64.Asm
15;
16; Abstract:
17;
18;   InterlockedCompareExchange64 function
19;
20; Notes:
21;
22;------------------------------------------------------------------------------
23
24    .586P
25    .model  flat,C
26    .code
27
28;------------------------------------------------------------------------------
29; UINT64
30; EFIAPI
31; InternalSyncCompareExchange64 (
32;   IN      UINT64                    *Value,
33;   IN      UINT64                    CompareValue,
34;   IN      UINT64                    ExchangeValue
35;   );
36;------------------------------------------------------------------------------
37InternalSyncCompareExchange64   PROC    USES    esi ebx
38    mov     esi, [esp + 12]
39    mov     eax, [esp + 16]
40    mov     edx, [esp + 20]
41    mov     ebx, [esp + 24]
42    mov     ecx, [esp + 28]
43    lock    cmpxchg8b   qword ptr [esi]
44    ret
45InternalSyncCompareExchange64   ENDP
46
47    END
48