1;------------------------------------------------------------------------------ 2; 3; Copyright (c) 2006 - 2016, 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 DEFAULT REL 26 SECTION .text 27 28;------------------------------------------------------------------------------ 29; UINT16 30; EFIAPI 31; InternalSyncCompareExchange16 ( 32; IN volatile UINT16 *Value, 33; IN UINT16 CompareValue, 34; IN UINT16 ExchangeValue 35; ); 36;------------------------------------------------------------------------------ 37global ASM_PFX(InternalSyncCompareExchange16) 38ASM_PFX(InternalSyncCompareExchange16): 39 mov ax, dx 40 lock cmpxchg [rcx], r8w 41 ret 42 43