mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-21 15:57:42 +01:00
54 lines
1.2 KiB
NASM
54 lines
1.2 KiB
NASM
|
;------------------------------------------------------------------------------
|
||
|
|
;
|
||
|
|
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
|
||
|
|
; SPDX-License-Identifier: BSD-2-Clause-Patent
|
||
|
|
;
|
||
|
|
; Module Name:
|
||
|
|
;
|
||
|
|
; SetMem64.nasm
|
||
|
|
;
|
||
|
|
; Abstract:
|
||
|
|
;
|
||
|
|
; SetMem64 function
|
||
|
|
;
|
||
|
|
; Notes:
|
||
|
|
;
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
DEFAULT REL
|
||
|
|
SECTION .text
|
||
|
|
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
; VOID *
|
||
|
|
; InternalMemSetMem64 (
|
||
|
|
; IN VOID *Buffer,
|
||
|
|
; IN UINTN Count,
|
||
|
|
; IN UINT64 Value
|
||
|
|
; )
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
global ASM_PFX(InternalMemSetMem64)
|
||
|
|
ASM_PFX(InternalMemSetMem64):
|
||
|
|
mov rax, rcx ; rax <- Buffer
|
||
|
|
xchg rcx, rdx ; rcx <- Count & rdx <- Buffer
|
||
|
|
test dl, 8
|
||
|
|
movq xmm0, r8
|
||
|
|
jz .0
|
||
|
|
mov [rdx], r8
|
||
|
|
add rdx, 8
|
||
|
|
dec rcx
|
||
|
|
.0:
|
||
|
|
shr rcx, 1
|
||
|
|
jz @SetQwords
|
||
|
|
movlhps xmm0, xmm0
|
||
|
|
.1:
|
||
|
|
movntdq [rdx], xmm0
|
||
|
|
lea rdx, [rdx + 16]
|
||
|
|
loop .1
|
||
|
|
mfence
|
||
|
|
@SetQwords:
|
||
|
|
jnc .2
|
||
|
|
mov [rdx], r8
|
||
|
|
.2:
|
||
|
|
ret
|
||
|
|
|