;------------------------------------------------------------------------------ | |
; | |
; Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> | |
; SPDX-License-Identifier: BSD-2-Clause-Patent | |
; | |
; Module Name: | |
; | |
; ScanMem64.Asm | |
; | |
; Abstract: | |
; | |
; ScanMem64 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 | |
; InternalMemScanMem64 ( | |
; IN CONST VOID *Buffer, | |
; IN UINTN Length, | |
; IN UINT64 Value | |
; ); | |
;------------------------------------------------------------------------------ | |
global ASM_PFX(InternalMemScanMem64) | |
ASM_PFX(InternalMemScanMem64): | |
push rdi | |
mov rdi, rcx | |
mov rax, r8 | |
mov rcx, rdx | |
repne scasq | |
lea rax, [rdi - 8] | |
cmovnz rax, rcx | |
pop rdi | |
ret | |