1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/LogStream.h>
#include <AK/Types.h>
class PhysicalAddress {
public:
PhysicalAddress() { }
explicit PhysicalAddress(FlatPtr address)
: m_address(address)
{
}
PhysicalAddress offset(FlatPtr o) const { return PhysicalAddress(m_address + o); }
FlatPtr get() const { return m_address; }
void set(FlatPtr address) { m_address = address; }
void mask(FlatPtr m) { m_address &= m; }
bool is_null() const { return m_address == 0; }
u8* as_ptr() { return reinterpret_cast<u8*>(m_address); }
const u8* as_ptr() const { return reinterpret_cast<const u8*>(m_address); }
PhysicalAddress page_base() const { return PhysicalAddress(m_address & 0xfffff000); }
FlatPtr offset_in_page() const { return PhysicalAddress(m_address & 0xfff).get(); }
bool operator==(const PhysicalAddress& other) const { return m_address == other.m_address; }
bool operator!=(const PhysicalAddress& other) const { return m_address != other.m_address; }
bool operator>(const PhysicalAddress& other) const { return m_address > other.m_address; }
bool operator>=(const PhysicalAddress& other) const { return m_address >= other.m_address; }
bool operator<(const PhysicalAddress& other) const { return m_address < other.m_address; }
bool operator<=(const PhysicalAddress& other) const { return m_address <= other.m_address; }
private:
FlatPtr m_address { 0 };
};
inline const LogStream& operator<<(const LogStream& stream, PhysicalAddress value)
{
return stream << 'P' << value.as_ptr();
}
|
