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 ; ScanMem8.Asm 15 ; 16 ; Abstract: 17 ; 18 ; ScanMem8 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 .code 33 34 ;------------------------------------------------------------------------------ 35 ; CONST VOID * 36 ; EFIAPI 37 ; InternalMemScanMem8 ( 38 ; IN CONST VOID *Buffer, 39 ; IN UINTN Length, 40 ; IN UINT8 Value 41 ; ); 42 ;------------------------------------------------------------------------------ 43 InternalMemScanMem8 PROC USES rdi 44 mov rdi, rcx 45 mov rcx, rdx 46 mov rax, r8 47 repne scasb 48 lea rax, [rdi - 1] 49 cmovnz rax, rcx ; set rax to 0 if not found 50 ret 51 InternalMemScanMem8 ENDP 52 53 END 54
