;------------------------------------------------------------------------------

;

; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>

; 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:

;

; SetMem32.asm

;

; Abstract:

;

; SetMem32 function

;

; Notes:

;

;------------------------------------------------------------------------------

.code

;------------------------------------------------------------------------------

; VOID *

; InternalMemSetMem32 (

; IN VOID *Buffer,

; IN UINTN Count,

; IN UINT32 Value

; )

;------------------------------------------------------------------------------

InternalMemSetMem32 PROC

DB 49h, 0fh, 6eh, 0c0h ; movd mm0, r8 (Value)

mov rax, rcx ; rax <- Buffer

xchg rcx, rdx ; rcx <- Count rdx <- Buffer

shr rcx, 1 ; rcx <- # of qwords to set

jz @SetDwords

DB 0fh, 70h, 0C0h, 44h ; pshufw mm0, mm0, 44h

@@:

DB 0fh, 0e7h, 02h ; movntq [rdx], mm0

lea rdx, [rdx + 8] ; use "lea" to avoid flag changes

loop @B

mfence

@SetDwords:

jnc @F

DB 0fh, 7eh, 02h ; movd [rdx], mm0

@@:

ret

InternalMemSetMem32 ENDP

END