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MdePkg/BaseSynchronizationLib: Add volatile Interlocked*() APIs
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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 ;------------------------------------------------------------------------------
35 global ASM_PFX(InternalSyncCompareExchange32)
36 ASM_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