2fc59a003e
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10604 6f19259b-4bc3-4df7-8a09-765794883524
59 lines
1.7 KiB
NASM
59 lines
1.7 KiB
NASM
;------------------------------------------------------------------------------
|
|
;
|
|
; Copyright (c) 2006, 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:
|
|
;
|
|
; SetMem.asm
|
|
;
|
|
; Abstract:
|
|
;
|
|
; SetMem function
|
|
;
|
|
; Notes:
|
|
;
|
|
;------------------------------------------------------------------------------
|
|
|
|
.code
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID *
|
|
; EFIAPI
|
|
; InternalMemSetMem (
|
|
; OUT VOID *Buffer,
|
|
; IN UINTN Length,
|
|
; IN UINT8 Value
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
InternalMemSetMem PROC USES rdi
|
|
mov rax, r8
|
|
mov ah, al
|
|
DB 48h, 0fh, 6eh, 0c0h ; movd mm0, rax
|
|
mov r8, rcx
|
|
mov rdi, r8 ; rdi <- Buffer
|
|
mov rcx, rdx
|
|
and edx, 7
|
|
shr rcx, 3
|
|
jz @SetBytes
|
|
DB 0fh, 70h, 0C0h, 00h ; pshufw mm0, mm0, 0h
|
|
@@:
|
|
DB 0fh, 0e7h, 07h ; movntq [rdi], mm0
|
|
add rdi, 8
|
|
loop @B
|
|
mfence
|
|
@SetBytes:
|
|
mov ecx, edx
|
|
rep stosb
|
|
mov rax, r8
|
|
ret
|
|
InternalMemSetMem ENDP
|
|
|
|
END
|