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 SECTION .text 25 26 ;------------------------------------------------------------------------------ 27 ; UINT64 28 ; EFIAPI 29 ; InternalSyncCompareExchange64 ( 30 ; IN volatile UINT64 *Value, 31 ; IN UINT64 CompareValue, 32 ; IN UINT64 ExchangeValue 33 ; ); 34 ;------------------------------------------------------------------------------ 35 global ASM_PFX(InternalSyncCompareExchange64) 36 ASM_PFX(InternalSyncCompareExchange64): 37 push esi 38 push ebx 39 mov esi, [esp + 12] 40 mov eax, [esp + 16] 41 mov edx, [esp + 20] 42 mov ebx, [esp + 24] 43 mov ecx, [esp + 28] 44 lock cmpxchg8b [esi] 45 pop ebx 46 pop esi 47 ret 48 49
