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;------------------------------------------------------------------------------
;
; 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:
;
; SetMem32.asm
;
; Abstract:
;
; SetMem32 function
;
; Notes:
;
;------------------------------------------------------------------------------
.686
.model flat,C
.mmx
.code
;------------------------------------------------------------------------------
; VOID *
; EFIAPI
; InternalMemSetMem32 (
; IN VOID *Buffer,
; IN UINTN Count,
; IN UINT32 Value
; );
;------------------------------------------------------------------------------
InternalMemSetMem32 PROC
mov eax, [esp + 4] ; eax <- Buffer as return value
mov ecx, [esp + 8] ; ecx <- Count
movd mm0, dword ptr [esp + 12] ; mm0 <- Value
shr ecx, 1 ; ecx <- number of qwords to set
mov edx, eax ; edx <- Buffer
jz @SetDwords
movq mm1, mm0
psllq mm1, 32
por mm0, mm1
@@:
movq qword ptr [edx], mm0
lea edx, [edx + 8] ; use "lea" to avoid change in flags
loop @B
@SetDwords:
jnc @F
movd dword ptr [edx], mm0
@@:
ret
InternalMemSetMem32 ENDP
END
|
