1 ;------------------------------------------------------------------------------ 2 ; 3 ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> 4 ; Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR> 5 ; This program and the accompanying materials 6 ; are licensed and made available under the terms and conditions of the BSD License 7 ; which accompanies this distribution. The full text of the license may be found at 8 ; http://opensource.org/licenses/bsd-license.php. 9 ; 10 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 ; 13 ; Module Name: 14 ; 15 ; InterlockedCompareExchange16.Asm 16 ; 17 ; Abstract: 18 ; 19 ; InterlockedCompareExchange16 function 20 ; 21 ; Notes: 22 ; 23 ;------------------------------------------------------------------------------ 24 25 .486 26 .model flat,C 27 .code 28 29 ;------------------------------------------------------------------------------ 30 ; UINT16 31 ; EFIAPI 32 ; InternalSyncCompareExchange16 ( 33 ; IN UINT16 *Value, 34 ; IN UINT16 CompareValue, 35 ; IN UINT16 ExchangeValue 36 ; ); 37 ;------------------------------------------------------------------------------ 38 InternalSyncCompareExchange16 PROC 39 mov ecx, [esp + 4] 40 mov ax, [esp + 8] 41 mov dx, [esp + 12] 42 lock cmpxchg [ecx], dx 43 ret 44 InternalSyncCompareExchange16 ENDP 45 46 END 47
