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- /*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #pragma once
- #include <AK/Format.h>
- #include <AK/Types.h>
- typedef u64 PhysicalPtr;
- typedef u64 PhysicalSize;
- class PhysicalAddress {
- public:
- ALWAYS_INLINE static PhysicalPtr physical_page_base(PhysicalPtr page_address) { return page_address & ~(PhysicalPtr)0xfff; }
- ALWAYS_INLINE static size_t physical_page_index(PhysicalPtr page_address)
- {
- auto page_index = page_address >> 12;
- if constexpr (sizeof(size_t) < sizeof(PhysicalPtr))
- VERIFY(!(page_index & ~(PhysicalPtr)((size_t)-1)));
- return (size_t)(page_index);
- }
- PhysicalAddress() = default;
- explicit PhysicalAddress(PhysicalPtr address)
- : m_address(address)
- {
- }
- [[nodiscard]] PhysicalAddress offset(PhysicalPtr o) const { return PhysicalAddress(m_address + o); }
- [[nodiscard]] PhysicalPtr get() const { return m_address; }
- void set(PhysicalPtr address) { m_address = address; }
- void mask(PhysicalPtr m) { m_address &= m; }
- [[nodiscard]] bool is_null() const { return m_address == 0; }
- [[nodiscard]] u8* as_ptr() { return reinterpret_cast<u8*>(m_address); }
- [[nodiscard]] const u8* as_ptr() const { return reinterpret_cast<const u8*>(m_address); }
- [[nodiscard]] PhysicalAddress page_base() const { return PhysicalAddress(physical_page_base(m_address)); }
- [[nodiscard]] PhysicalPtr 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:
- PhysicalPtr m_address { 0 };
- };
- template<>
- struct AK::Formatter<PhysicalAddress> : AK::Formatter<FormatString> {
- void format(FormatBuilder& builder, PhysicalAddress value)
- {
- if constexpr (sizeof(PhysicalPtr) == sizeof(u64))
- return AK::Formatter<FormatString>::format(builder, "P{:016x}", value.get());
- else
- return AK::Formatter<FormatString>::format(builder, "P{}", value.as_ptr());
- }
- };
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