VirtualBox

source: vbox/trunk/src/VBox/Runtime/common/asm/ASMMemFill32-generic.cpp@ 93943

Last change on this file since 93943 was 93115, checked in by vboxsync, 3 years ago

scm --update-copyright-year

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.1 KB
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1/* $Id: ASMMemFill32-generic.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2/** @file
3 * IPRT - ASMMemZeroPage - generic C implementation.
4 */
5
6/*
7 * Copyright (C) 2021-2022 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27
28/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#include <iprt/asm.h>
32#include "internal/iprt.h"
33
34#include <iprt/string.h>
35#include <iprt/assert.h>
36
37
38RTDECL(void) ASMMemFill32(volatile void RT_FAR *pv, size_t cb, uint32_t u32) RT_NOTHROW_DEF
39{
40 Assert(!(cb & 3));
41 size_t cFills = cb / sizeof(uint32_t);
42 uint32_t *pu32Dst = (uint32_t *)pv;
43
44 while (cFills >= 8)
45 {
46 pu32Dst[0] = u32;
47 pu32Dst[1] = u32;
48 pu32Dst[2] = u32;
49 pu32Dst[3] = u32;
50 pu32Dst[4] = u32;
51 pu32Dst[5] = u32;
52 pu32Dst[6] = u32;
53 pu32Dst[7] = u32;
54 pu32Dst += 8;
55 cFills -= 8;
56 }
57
58 while (cFills > 0)
59 {
60 *pu32Dst++ = u32;
61 cFills -= 1;
62 }
63}
64
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