VirtualBox

source: vbox/trunk/src/VBox/Runtime/generic/system-page-size-generic.cpp

Last change on this file was 100307, checked in by vboxsync, 11 months ago

Runtime,Additions,HostDrivers: Provide API to query the host page size and associated parameters for architectures where the used page size can vary (like on linux.arm64 depending on the kernel config), bugref:10476

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File size: 2.4 KB
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1/* $Id: system-page-size-generic.cpp 100307 2023-06-28 10:17:34Z vboxsync $ */
2/** @file
3 * IPRT - RTSystemGetPageSize(), RTSystemGetPageShift(), RTSystemGetPageOffsetMask() and RTSystemPageAlignSize(), generic implementation.
4 */
5
6/*
7 * Copyright (C) 2023 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#include "internal/iprt.h"
42#include <iprt/system.h>
43#include <iprt/param.h>
44
45
46RTDECL(uint32_t) RTSystemGetPageSize(void)
47{
48 return PAGE_SIZE;
49}
50RT_EXPORT_SYMBOL(RTSystemGetPageSize);
51
52
53RTDECL(uint32_t) RTSystemGetPageShift(void)
54{
55 return PAGE_SHIFT;
56}
57RT_EXPORT_SYMBOL(RTSystemGetPageShift);
58
59
60RTDECL(uintptr_t) RTSystemGetPageOffsetMask(void)
61{
62 return PAGE_OFFSET_MASK;
63}
64RT_EXPORT_SYMBOL(RTSystemGetPageOffsetMask);
65
66
67RTDECL(size_t) RTSystemPageAlignSize(size_t cb)
68{
69 return RT_ALIGN_Z(cb, PAGE_SIZE);
70}
71RT_EXPORT_SYMBOL(RTSystemPageAlignSize);
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