#ifndef _PAGETABLE_H_
#define _PAGETABLE_H_

#include "../types.h"

typedef struct {
    uint8_t present:1 = 0;
    uint8_t write:1 = 0;
    uint8_t user:1 = 0;
    uint8_t pwt:1 = 0;
    uint8_t cache_disable:1 = 0;
    uint8_t accessed:1 = 0;
    uint8_t dirty:1 = 0;
    uint8_t pat:1 = 0;
    uint8_t rsvd_0:4 = 0;
    uint64_t address:39 = 0;
    uint16_t rsvd_1:10 = 0;
    uint8_t execute_disable:1 = 0;
} __attribute__((__packed__)) pagetable_entry_t;

typedef struct {
    pagetable_entry_t entries[512];
} pagetable_t;

//typedef struct {
//    uint8_t present:1 = 0;
//    uint8_t write:1 = 0;
//    uint8_t user:1 = 0;
//    uint8_t pwt:1 = 0;
//    uint8_t cache_disable:1 = 0;
//    uint8_t accessed:1 = 0;
//    uint8_t rsvd_0:6 = 0;
//    uint64_t address:39 = 0;
//    uint16_t rsvd_1:10 = 0;
//    uint8_t execute_disable:1 = 0;
//} __attribute__((__packed__))  pagedirectory_entry_t;

typedef struct {
    alignas(4096) pagetable_t l4;
    alignas(4096) pagetable_t l3;
    alignas(4096) pagetable_t l2;
    alignas(4096) pagetable_t l1[64];
    alignas(4096) pagetable_t l2_apic;
    alignas(4096) pagetable_t ioapic;
    alignas(4096) pagetable_t lapic;
} four_lvl_paging_t;

void create_basic_page_table(uintptr_t base);
void load_cr3( void* cr3_value );

//typedef struct {
// same
//} pagedirectory_pointertable_entry_t;

//typedef struct {
// same
//} PML4_entry_t;

#endif