42 lines
946 B
C
42 lines
946 B
C
#pragma once
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#include <luna/Types.h>
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const usize ARCH_PAGE_SIZE = 4096;
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const usize ARCH_HUGE_PAGE_SIZE = 2 * 1024 * 1024; // 2 MiB
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struct [[gnu::packed]] PageTableEntry
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{
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union {
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struct [[gnu::packed]]
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{
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bool present : 1;
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bool read_write : 1;
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bool user : 1;
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bool write_through : 1;
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bool cache_disabled : 1;
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bool accessed : 1;
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bool ignore0 : 1;
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bool larger_pages : 1;
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bool ignore1 : 1;
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u8 available : 3;
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u64 address : 48;
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u8 available2 : 3;
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bool no_execute : 1;
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};
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u64 raw;
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};
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void set_address(u64 addr);
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u64 get_address() const;
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void clear();
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};
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struct alignas(ARCH_PAGE_SIZE) PageDirectory
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{
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PageTableEntry entries[512];
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};
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static_assert(sizeof(PageTableEntry) == 8UL);
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static_assert(sizeof(PageDirectory) == ARCH_PAGE_SIZE);
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