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LibBareMetal: Add Memory definitions
Add classes of VirtualAddress & PhysicalAddress.
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/* | ||
* Copyright (c) 2018-2020, Andreas Kling <[email protected]> | ||
* 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. | ||
*/ | ||
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#pragma once | ||
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#include <AK/LogStream.h> | ||
#include <AK/Types.h> | ||
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class PhysicalAddress { | ||
public: | ||
PhysicalAddress() {} | ||
explicit PhysicalAddress(uintptr_t address) | ||
: m_address(address) | ||
{ | ||
} | ||
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PhysicalAddress offset(uintptr_t o) const { return PhysicalAddress(m_address + o); } | ||
uintptr_t get() const { return m_address; } | ||
void set(uintptr_t address) { m_address = address; } | ||
void mask(uintptr_t m) { m_address &= m; } | ||
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bool is_null() const { return m_address == 0; } | ||
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u8* as_ptr() { return reinterpret_cast<u8*>(m_address); } | ||
const u8* as_ptr() const { return reinterpret_cast<const u8*>(m_address); } | ||
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PhysicalAddress page_base() const { return PhysicalAddress(m_address & 0xfffff000); } | ||
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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; } | ||
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private: | ||
uintptr_t m_address { 0 }; | ||
}; | ||
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inline const LogStream& operator<<(const LogStream& stream, PhysicalAddress value) | ||
{ | ||
return stream << 'P' << value.as_ptr(); | ||
} |
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/* | ||
* Copyright (c) 2018-2020, Andreas Kling <[email protected]> | ||
* 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. | ||
*/ | ||
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#pragma once | ||
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#include <AK/LogStream.h> | ||
#include <AK/Types.h> | ||
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class VirtualAddress { | ||
public: | ||
VirtualAddress() {} | ||
explicit VirtualAddress(uintptr_t address) | ||
: m_address(address) | ||
{ | ||
} | ||
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explicit VirtualAddress(const void* address) | ||
: m_address((uintptr_t)address) | ||
{ | ||
} | ||
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bool is_null() const { return m_address == 0; } | ||
bool is_page_aligned() const { return (m_address & 0xfff) == 0; } | ||
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VirtualAddress offset(uintptr_t o) const { return VirtualAddress(m_address + o); } | ||
uintptr_t get() const { return m_address; } | ||
void set(uintptr_t address) { m_address = address; } | ||
void mask(uintptr_t m) { m_address &= m; } | ||
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bool operator<=(const VirtualAddress& other) const { return m_address <= other.m_address; } | ||
bool operator>=(const VirtualAddress& other) const { return m_address >= other.m_address; } | ||
bool operator>(const VirtualAddress& other) const { return m_address > other.m_address; } | ||
bool operator<(const VirtualAddress& other) const { return m_address < other.m_address; } | ||
bool operator==(const VirtualAddress& other) const { return m_address == other.m_address; } | ||
bool operator!=(const VirtualAddress& other) const { return m_address != other.m_address; } | ||
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u8* as_ptr() { return reinterpret_cast<u8*>(m_address); } | ||
const u8* as_ptr() const { return reinterpret_cast<const u8*>(m_address); } | ||
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VirtualAddress page_base() const { return VirtualAddress(m_address & 0xfffff000); } | ||
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private: | ||
uintptr_t m_address { 0 }; | ||
}; | ||
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inline VirtualAddress operator-(const VirtualAddress& a, const VirtualAddress& b) | ||
{ | ||
return VirtualAddress(a.get() - b.get()); | ||
} | ||
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inline const LogStream& operator<<(const LogStream& stream, VirtualAddress value) | ||
{ | ||
return stream << 'V' << value.as_ptr(); | ||
} |