audk/MdePkg/Library/BaseMemoryLibOptPei/X64/SetMem.nasm

42 lines
1.0 KiB
NASM

;------------------------------------------------------------------------------
;
; Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
;
; SetMem.Asm
;
; Abstract:
;
; SetMem function
;
; Notes:
;
;------------------------------------------------------------------------------
DEFAULT REL
SECTION .text
;------------------------------------------------------------------------------
; VOID *
; EFIAPI
; InternalMemSetMem (
; IN VOID *Buffer,
; IN UINTN Count,
; IN UINT8 Value
; )
;------------------------------------------------------------------------------
global ASM_PFX(InternalMemSetMem)
ASM_PFX(InternalMemSetMem):
push rdi
push rcx ; push Buffer
mov rax, r8 ; rax = Value
mov rdi, rcx ; rdi = Buffer
mov rcx, rdx ; rcx = Count
rep stosb
pop rax ; rax = Buffer
pop rdi
ret