#pragma once
#include <stdint.h>

#define IDT_SIZE 256
#define IDT_INTERRUPTS 256

struct IdtEntry {
	uint16_t isr_low;
	uint16_t kernel_cs;
	uint8_t _reserved;
	uint8_t attributes;
	uint16_t isr_high;
} __attribute__((packed));

struct Idtr {
	uint16_t	limit;
	uint32_t	base;
} __attribute__((packed));

typedef enum {
	IDT_FLAG_GATE_TASK = 0x5,
	IDT_FLAG_GATE_16BIT_INT = 0x6,
	IDT_FLAG_GATE_16BIT_TRAP = 0x7,
	IDT_FLAG_GATE_32BIT_INT = 0xE,
	IDT_FLAG_GATE_32BIT_TRAP = 0xF,

	IDT_FLAG_RING0 = (0 << 5),
	IDT_FLAG_RING1 = (1 << 5),
	IDT_FLAG_RING2 = (2 << 5),
	IDT_FLAG_RING3 = (3 << 5),

	IDT_FLAG_PRESENT = 0x80,

} IDTFlags;

void idt_init(void);