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;------------------------------------------------------------------------------
;
; Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
;
; ScanMem8.Asm
;
; Abstract:
;
; ScanMem8 function
;
; Notes:
;
; The following BaseMemoryLib instances contain the same copy of this file:
;
; BaseMemoryLibRepStr
; BaseMemoryLibMmx
; BaseMemoryLibSse2
; BaseMemoryLibOptDxe
; BaseMemoryLibOptPei
;
;------------------------------------------------------------------------------
DEFAULT REL
SECTION .text
;------------------------------------------------------------------------------
; CONST VOID *
; EFIAPI
; InternalMemScanMem8 (
; IN CONST VOID *Buffer,
; IN UINTN Length,
; IN UINT8 Value
; );
;------------------------------------------------------------------------------
global ASM_PFX(InternalMemScanMem8)
ASM_PFX(InternalMemScanMem8):
push rdi
mov rdi, rcx
mov rcx, rdx
mov rax, r8
repne scasb
lea rax, [rdi - 1]
cmovnz rax, rcx ; set rax to 0 if not found
pop rdi
ret
|
