mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-21 15:57:42 +01:00
64 lines
1.3 KiB
NASM
64 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 *
|
|
; InternalMemSetMem16 (
|
|
; IN VOID *Buffer,
|
|
; IN UINTN Count,
|
|
; IN UINT16 Value
|
|
; )
|
|
;------------------------------------------------------------------------------
|
|
global ASM_PFX(InternalMemSetMem16)
|
|
ASM_PFX(InternalMemSetMem16):
|
|
push rdi
|
|
mov rdi, rcx
|
|
mov r9, rdi
|
|
xor rcx, rcx
|
|
sub rcx, rdi
|
|
and rcx, 15
|
|
mov rax, r8
|
|
jz .0
|
|
shr rcx, 1
|
|
cmp rcx, rdx
|
|
cmova rcx, rdx
|
|
sub rdx, rcx
|
|
rep stosw
|
|
.0:
|
|
mov rcx, rdx
|
|
and edx, 7
|
|
shr rcx, 3
|
|
jz @SetWords
|
|
movd xmm0, eax
|
|
pshuflw xmm0, xmm0, 0
|
|
movlhps xmm0, xmm0
|
|
.1:
|
|
movntdq [rdi], xmm0
|
|
add rdi, 16
|
|
loop .1
|
|
mfence
|
|
@SetWords:
|
|
mov ecx, edx
|
|
rep stosw
|
|
mov rax, r9
|
|
pop rdi
|
|
ret
|
|
|