1 ;------------------------------------------------------------------------------
3 ; Copyright (c) 2006, Intel Corporation
4 ; All rights reserved. This program and the accompanying materials
5 ; are licensed and made available under the terms and conditions of the BSD License
6 ; which accompanies this distribution. The full text of the license may be found at
7 ; http://opensource.org/licenses/bsd-license.php
9 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
22 ;------------------------------------------------------------------------------
26 ;------------------------------------------------------------------------------
28 ; InternalMemSetMem32 (
33 ;------------------------------------------------------------------------------
34 InternalMemSetMem32 PROC
35 DB 49h, 0fh, 6eh, 0c0h ; movd mm0, r8 (Value)
36 mov rax, rcx ; rax <- Buffer
37 xchg rcx, rdx ; rcx <- Count rdx <- Buffer
38 shr rcx, 1 ; rcx <- # of qwords to set
40 DB 0fh, 70h, 0C0h, 44h ; pshufw mm0, mm0, 44h
42 DB 0fh, 0e7h, 02h ; movntq [rdx], mm0
43 lea rdx, [rdx + 8] ; use "lea" to avoid flag changes
48 DB 0fh, 7eh, 02h ; movd [rdx], mm0
51 InternalMemSetMem32 ENDP