mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-27 01:50:24 +00:00
21d5f4ada1
This was supposed to be the foundation for some kind of pre-kernel environment, but nobody is working on it right now, so let's move everything back into the kernel and remove all the confusion.
67 lines
2.9 KiB
C++
67 lines
2.9 KiB
C++
/*
|
|
* 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();
|
|
}
|