#ifndef _GDT_H
#define _GDT_H

#include <stdint.h>

struct gdt_entry {
    uint16_t limit_low;     /* Lower 16 bits of limit */
    uint16_t base_low;      /* Lower 16 bits of base */
    uint8_t  base_middle;   /* Next 8 bits of base */
    uint8_t  access;        /* Access flags */
    uint8_t  granularity;   /* Granularity + high 4 bits of limit */
    uint8_t  base_high;     /* Last 8 bits of base */
} __attribute__((packed));

struct gdt_ptr {
    uint16_t limit;   /* Size of GDT - 1 */
    uint32_t base;    /* Base address of GDT */
} __attribute__((packed));

void gdt_install();
void gdt_set_entry(int num, uint32_t base, uint32_t limit, uint8_t access, uint8_t gran);

#endif