mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-27 12:15:19 +01:00
64 lines
1.5 KiB
NASM
64 lines
1.5 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:
|
|
;
|
|
;------------------------------------------------------------------------------
|
|
|
|
SECTION .text
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID *
|
|
; EFIAPI
|
|
; InternalMemSetMem16 (
|
|
; IN VOID *Buffer,
|
|
; IN UINTN Count,
|
|
; IN UINT16 Value
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
global ASM_PFX(InternalMemSetMem16)
|
|
ASM_PFX(InternalMemSetMem16):
|
|
push edi
|
|
mov edx, [esp + 12]
|
|
mov edi, [esp + 8]
|
|
xor ecx, ecx
|
|
sub ecx, edi
|
|
and ecx, 15 ; ecx + edi aligns on 16-byte boundary
|
|
mov eax, [esp + 16]
|
|
jz .0
|
|
shr ecx, 1
|
|
cmp ecx, edx
|
|
cmova ecx, edx
|
|
sub edx, ecx
|
|
rep stosw
|
|
.0:
|
|
mov ecx, edx
|
|
and edx, 7
|
|
shr ecx, 3
|
|
jz @SetWords
|
|
movd xmm0, eax
|
|
pshuflw xmm0, xmm0, 0
|
|
movlhps xmm0, xmm0
|
|
.1:
|
|
movntdq [edi], xmm0 ; edi should be 16-byte aligned
|
|
add edi, 16
|
|
loop .1
|
|
mfence
|
|
@SetWords:
|
|
mov ecx, edx
|
|
rep stosw
|
|
mov eax, [esp + 8]
|
|
pop edi
|
|
ret
|
|
|