1;------------------------------------------------------------------------------
2;
3; Copyright (c) 2006 - 2016, 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;   InterlockedCompareExchange32.Asm
15;
16; Abstract:
17;
18;   InterlockedCompareExchange32 function
19;
20; Notes:
21;
22;------------------------------------------------------------------------------
23
24    SECTION .text
25
26;------------------------------------------------------------------------------
27; UINT32
28; EFIAPI
29; InternalSyncCompareExchange32 (
30;   IN      volatile UINT32           *Value,
31;   IN      UINT32                    CompareValue,
32;   IN      UINT32                    ExchangeValue
33;   );
34;------------------------------------------------------------------------------
35global ASM_PFX(InternalSyncCompareExchange32)
36ASM_PFX(InternalSyncCompareExchange32):
37    mov     ecx, [esp + 4]
38    mov     eax, [esp + 8]
39    mov     edx, [esp + 12]
40    lock    cmpxchg [ecx], edx
41    ret
42
43