75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
#ifndef HAL_VMM_H_
|
|
#define HAL_VMM_H_
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include "compiler/attr.h"
|
|
|
|
#define VIRT(X) ((void *)(BOOT_INFO.hhdm_off + (uint64_t)(X)))
|
|
|
|
typedef struct VasRange {
|
|
struct VasRange *next;
|
|
|
|
uint8_t *virtstart;
|
|
uint8_t *physstart;
|
|
size_t size;
|
|
uint8_t pgflags;
|
|
} PACKED VasRange;
|
|
|
|
struct Proc;
|
|
|
|
enum {
|
|
HAL_PG_PRESENT = 1<<0,
|
|
HAL_PG_RW = 1<<1,
|
|
HAL_PG_USER = 1<<2,
|
|
};
|
|
|
|
typedef struct {
|
|
uint16_t pml4;
|
|
uint16_t pml3;
|
|
uint16_t pml2;
|
|
uint16_t pml1;
|
|
/* uint64_t pml4; */
|
|
/* uint64_t pml3; */
|
|
/* uint64_t pml2; */
|
|
/* uint64_t pml1; */
|
|
} PACKED PgIndex;
|
|
|
|
typedef struct {
|
|
bool present: 1;
|
|
bool rw: 1;
|
|
bool user: 1;
|
|
bool writethrough: 1;
|
|
bool cachedisabled: 1;
|
|
bool accessed: 1;
|
|
bool dirty: 1;
|
|
bool hugepage: 1;
|
|
bool global: 1;
|
|
uint8_t avail: 3;
|
|
uint64_t addr: 40;
|
|
uint16_t osdef: 11;
|
|
bool nx: 1;
|
|
/* bool zero0: 1; */
|
|
/* bool size: 1; */
|
|
/* bool zero1: 1; */
|
|
/* uint8_t avail: 3; */
|
|
/* uint64_t addr: 52; */
|
|
} PACKED Pte;
|
|
|
|
typedef struct {
|
|
Pte ents[512];
|
|
} PACKED PgTable;
|
|
|
|
extern uint64_t KERNEL_CR3;
|
|
|
|
void hal_vmm_init(void);
|
|
void hal_vmm_unmap_page(uint64_t cr3phys, uint64_t virtaddr, uint64_t physaddr);
|
|
void hal_vmm_map_page(uint64_t cr3phys, uint64_t virtaddr, uint64_t physaddr, uint32_t flags);
|
|
uint64_t hal_vmm_current_cr3(void);
|
|
void hal_vmm_map_range(uint64_t cr3phys, void *virtstart, void *physstart, size_t size, uint32_t flags);
|
|
void hal_vmm_unmap_range(uint64_t cr3phys, void *virtstart, void *physstart, size_t size);
|
|
uint64_t hal_vmm_userproc_pml4_phys(struct Proc *proc);
|
|
|
|
#endif // HAL_VMM_H_
|