1;------------------------------------------------------------------------------ 2; 3; Copyright (c) 2006 - 2008, 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; ScanMem64.Asm 15; 16; Abstract: 17; 18; ScanMem64 function 19; 20; Notes: 21; 22; The following BaseMemoryLib instances contain the same copy of this file: 23; 24; BaseMemoryLibRepStr 25; BaseMemoryLibMmx 26; BaseMemoryLibSse2 27; BaseMemoryLibOptDxe 28; BaseMemoryLibOptPei 29; 30;------------------------------------------------------------------------------ 31 32 DEFAULT REL 33 SECTION .text 34 35;------------------------------------------------------------------------------ 36; CONST VOID * 37; EFIAPI 38; InternalMemScanMem64 ( 39; IN CONST VOID *Buffer, 40; IN UINTN Length, 41; IN UINT64 Value 42; ); 43;------------------------------------------------------------------------------ 44global ASM_PFX(InternalMemScanMem64) 45ASM_PFX(InternalMemScanMem64): 46 push rdi 47 mov rdi, rcx 48 mov rax, r8 49 mov rcx, rdx 50 repne scasq 51 lea rax, [rdi - 8] 52 cmovnz rax, rcx 53 pop rdi 54 ret 55 56