mirror of https://github.com/acidanthera/audk.git
60 lines
1.5 KiB
NASM
60 lines
1.5 KiB
NASM
;------------------------------------------------------------------------------
|
|
;
|
|
; Copyright (c) 2006, Intel Corporation
|
|
; All rights reserved. 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:
|
|
;
|
|
; SetMem64.asm
|
|
;
|
|
; Abstract:
|
|
;
|
|
; SetMem64 function
|
|
;
|
|
; Notes:
|
|
;
|
|
;------------------------------------------------------------------------------
|
|
|
|
.code
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID *
|
|
; InternalMemSetMem64 (
|
|
; IN VOID *Buffer,
|
|
; IN UINTN Count,
|
|
; IN UINT64 Value
|
|
; )
|
|
;------------------------------------------------------------------------------
|
|
InternalMemSetMem64 PROC
|
|
mov rax, rcx ; rax <- Buffer
|
|
xchg rcx, rdx ; rcx <- Count & rdx <- Buffer
|
|
test dl, 8
|
|
movd xmm0, r8
|
|
jz @F
|
|
mov [rdx], r8
|
|
add rdx, 8
|
|
dec rcx
|
|
@@:
|
|
shr rcx, 1
|
|
jz @SetQwords
|
|
movlhps xmm0, xmm0
|
|
@@:
|
|
movntdq [rdx], xmm0
|
|
lea rdx, [rdx + 16]
|
|
loop @B
|
|
mfence
|
|
@SetQwords:
|
|
jnc @F
|
|
mov [rdx], r8
|
|
@@:
|
|
ret
|
|
InternalMemSetMem64 ENDP
|
|
|
|
END
|