39 lines
No EOL
989 B
C
Executable file
39 lines
No EOL
989 B
C
Executable file
/*
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* The Soaplin Kernel
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* Copyright (C) 2025 The SILD Project
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*
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* pg.c - Virtual memory manager
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*/
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#pragma once
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// Page flags
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#include <stdint.h>
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#define PTE_ADDR_MASK 0x000ffffffffff000ull
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#define PTE_GET_ADDR(VALUE) ((VALUE) & PTE_ADDR_MASK)
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#define PTE_GET_FLAGS(VALUE) ((VALUE) & ~PTE_ADDR_MASK)
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#define PTE_PRESENT (1 << 0)
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#define PTE_WRITE (1 << 1)
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#define PTE_USER (1 << 2)
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#define PTE_NX (1ULL << 63) // NX = No eXecute.
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typedef uint64_t *pagemap_t;
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extern pagemap_t pg_kernel_pm;
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extern pagemap_t pg_current_pm;
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void pg_init();
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pagemap_t pg_alloc_pm();
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void pg_free_pm(pagemap_t pm);
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void pg_load_pm(pagemap_t pm);
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uint64_t pg_physical(pagemap_t pm, uint64_t vaddr);
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void pg_map(pagemap_t pm, uint64_t vaddr, uint64_t paddr, uint64_t flags);
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void pg_map_user(pagemap_t pm, uint64_t vaddr, uint64_t paddr,
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uint64_t flags);
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void pg_unmap(pagemap_t pm, uint64_t vaddr);
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void pg_protect(pagemap_t pm, uint64_t vaddr, uint64_t flags); |