mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-27 16:58:09 +01:00
54 lines
1.3 KiB
NASM
54 lines
1.3 KiB
NASM
;------------------------------------------------------------------------------
|
|
;
|
|
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
|
|
; SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
;
|
|
; Module Name:
|
|
;
|
|
; SetMem16.nasm
|
|
;
|
|
; Abstract:
|
|
;
|
|
; SetMem16 function
|
|
;
|
|
; Notes:
|
|
;
|
|
;------------------------------------------------------------------------------
|
|
|
|
DEFAULT REL
|
|
SECTION .text
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID *
|
|
; EFIAPI
|
|
; InternalMemSetMem16 (
|
|
; OUT VOID *Buffer,
|
|
; IN UINTN Length,
|
|
; IN UINT16 Value
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
global ASM_PFX(InternalMemSetMem16)
|
|
ASM_PFX(InternalMemSetMem16):
|
|
push rdi
|
|
mov rax, r8
|
|
DB 0x48, 0xf, 0x6e, 0xc0 ; movd mm0, rax
|
|
mov r8, rcx
|
|
mov rdi, r8
|
|
mov rcx, rdx
|
|
and edx, 3
|
|
shr rcx, 2
|
|
jz @SetWords
|
|
DB 0xf, 0x70, 0xC0, 0x0 ; pshufw mm0, mm0, 0h
|
|
.0:
|
|
DB 0xf, 0xe7, 0x7 ; movntq [rdi], mm0
|
|
add rdi, 8
|
|
loop .0
|
|
mfence
|
|
@SetWords:
|
|
mov ecx, edx
|
|
rep stosw
|
|
mov rax, r8
|
|
pop rdi
|
|
ret
|
|
|