audk/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/X64/EfiSetMemRep8.asm

59 lines
1.6 KiB
NASM
Raw Normal View History

;------------------------------------------------------------------------------
;
; Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>
; This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License
; which accompanies this distribution. The full text of the license may be found at
; http://opensource.org/licenses/bsd-license.php
;
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
;
; Module Name:
;
; EfiSetMemRep8.asm
;
; Abstract:
;
; SetMem function
;
; Notes:
;
;------------------------------------------------------------------------------
.code
;------------------------------------------------------------------------------
; VOID
; EfiCommonLibSetMem (
; OUT VOID *Buffer,
; IN UINTN Size,
; IN UINT8 Value
; );
;------------------------------------------------------------------------------
EfiCommonLibSetMem PROC USES rdi rbx
cmp rdx, 0 ; if Size == 0, do nothing
je @SetDone
mov rax, r8
mov bl, al
mov bh, bl
mov ax, bx
shl rax, 10h
mov ax, bx
mov ebx, eax
shl rax, 20h
mov eax, ebx
mov rdi, rcx
mov rcx, rdx
shr rcx, 3
rep stosq
mov rcx, rdx
and rcx, 7
rep stosb
@SetDone:
ret
EfiCommonLibSetMem ENDP
END