52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
#ifndef HAL_VMM_H_
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#define HAL_VMM_H_
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#include <stdint.h>
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#include <stdbool.h>
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#include "compiler/attr.h"
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struct Proc;
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enum {
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HAL_PG_PRESENT = 1<<0,
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HAL_PG_RW = 1<<1,
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HAL_PG_USER = 1<<2,
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};
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typedef struct {
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uint64_t pml4;
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uint64_t pml3;
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uint64_t pml2;
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uint64_t pml1;
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} PACKED PgIndex;
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typedef struct {
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bool present: 1;
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bool rw: 1;
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bool user: 1;
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bool writethrough: 1;
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bool cachedisabled: 1;
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bool accessed: 1;
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bool zero0: 1;
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bool size: 1;
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bool zero1: 1;
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uint8_t avail: 3;
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uint64_t addr: 52;
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} PACKED Pte;
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typedef struct {
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Pte ents[512];
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} PACKED PgTable;
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extern PgTable *KERNEL_CR3;
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void hal_vmm_init(void);
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void hal_vmm_unmap_page(PgTable *pml4, uint64_t virtaddr, uint64_t physaddr);
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void hal_vmm_map_page(PgTable *pml4, uint64_t virtaddr, uint64_t physaddr, uint32_t flags);
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PgTable *hal_vmm_current_cr3(void);
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void hal_vmm_map_range(PgTable *cr3, void *virtstart, void *physstart, size_t size, uint32_t flags);
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void hal_vmm_unmap_range(PgTable *cr3, void *virtstart, void *physstart, size_t size);
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PgTable *hal_vmm_userproc_pml4(struct Proc *proc);
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#endif // HAL_VMM_H_
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