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kernel: x86_64 mmu

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Matheus
2023-04-14 21:45:43 -03:00
parent 928b676d78
commit d9d2784e4f
3 changed files with 250 additions and 0 deletions
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kernel-src/include/x86-64/arch/mmu.h
+19
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@@ -1,6 +1,25 @@
#ifndef _MMU_H_INCLUDE
#define _MMU_H_INCLUDE
#include <stdbool.h>
#include <stdint.h>
#include <stddef.h>
#define PAGE_SIZE 4096
#define ARCH_MMU_FLAG_READ (uint64_t)1
#define ARCH_MMU_FLAG_WRITE (uint64_t)2
#define ARCH_MMU_FLAG_USER (uint64_t)4
#define ARCH_MMU_FLAG_NOEXEC ((uint64_t)1 << 63)
typedef uint64_t mmuflags_t;
typedef uint64_t * pagetableptr_t; // physical address
bool arch_mmu_map(pagetableptr_t table, void *paddr, void *vaddr, mmuflags_t flags);
void arch_mmu_invalidate(void *vaddr);
void arch_mmu_unmap(pagetableptr_t table, void *vaddr);
void arch_mmu_remap(pagetableptr_t table, void *paddr, void *vaddr, mmuflags_t flags);
void arch_mmu_switch(pagetableptr_t table);
void *arch_mmu_getphysical(pagetableptr_t table, void *vaddr);
void arch_mmu_init();
#endif