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RaphProductions 2025-05-06 20:19:48 +02:00
commit cab7a75780
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kernel/src/mm/vmm.h Executable file
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#pragma once
#include <stdint.h>
#define PTE_ADDR_MASK 0x000ffffffffff000
#define PTE_GET_ADDR(VALUE) ((VALUE) & PTE_ADDR_MASK)
#define PTE_GET_FLAGS(VALUE) ((VALUE) & ~PTE_ADDR_MASK)
#define VMM_PRESENT (1 << 0)
#define VMM_WRITABLE (1 << 1)
#define VMM_USER (1 << 2)
#define VMM_NX (1ULL << 63)
typedef char sym[];
extern sym reqs_start_ld;
extern sym reqs_end_ld;
extern sym text_start_ld;
extern sym text_end_ld;
extern sym rodata_start_ld;
extern sym rodata_end_ld;
extern sym data_start_ld;
extern sym data_end_ld;
typedef struct pagemap {
uint64_t *toplevel;
} pagemap_t;
extern pagemap_t *vmm_kernel_pm;
extern pagemap_t *vmm_current_pm;
pagemap_t *vmm_alloc_pm();
void vmm_init();
void vmm_release_pm(pagemap_t *pm);
void vmm_load_pagemap(pagemap_t *pm);
void vmm_map(pagemap_t *pm, uint64_t vaddr, uint64_t paddr, uint64_t flags);
void vmm_unmap(pagemap_t *pm, uint64_t vaddr) ;