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; InterlockedCompareExchange64.Asm 15; 16; Abstract: 17; 18; InterlockedCompareExchange64 function 19; 20; Notes: 21; 22;------------------------------------------------------------------------------ 23 24 .code 25 26;------------------------------------------------------------------------------ 27; UINT64 28; EFIAPI 29; InternalSyncCompareExchange64 ( 30; IN volatile UINT64 *Value, 31; IN UINT64 CompareValue, 32; IN UINT64 ExchangeValue 33; ); 34;------------------------------------------------------------------------------ 35InternalSyncCompareExchange64 PROC 36 mov rax, rdx 37 lock cmpxchg [rcx], r8 38 ret 39InternalSyncCompareExchange64 ENDP 40 41 END 42