#include "types.h"

struct cpu_reg_state {
	u32 eax;
	u32 ebx;
	u32 ecx;
	u32 edx;

	u16 cs;
	u16 ds;
	u16 es; 
	u16 fs; 
	u16 gs;
	u16 ss;

	u32 esi;
	u32 edi;
	u32 ebp;
	u32 eip;
	u32 esp;

	u32 eflags;
}__attribute__((packed));

// Populated by the interrupt handler itself
struct stack_state {
	u32 error_code; 	// 8 10 11 12 13 14 17 <= ony interrupts that actually use the error code
	u32 eip;
	u16 cs;
	u32 eflags;
};

struct IDT_Entry {
	u16 offset_low; // offset bits 0..15
	u16 selector; 	// code segment in either gdt or ldt
	u8 zero; 		// not used always 0
	/* 7                           0
	 * +---+---+---+---+---+---+---+---+
	 * | P |  DPL  | S |    GateType   |
	 * +---+---+---+---+---+---+---+---+
	 */
	u8 type_attrs; 	// format specified above
	u16 offset_high;// offset bits 16..31
}__attribute__((packed));

struct IDT_PTR {
	u16 limit;
	u32 address;
}__attribute__((packed));

struct IDT_Entry IDT[255];
struct IDT_PTR idt_ptr;

//void interrupt_handler(struct cpu_reg_state, struct stack_state, u32);
void load_idt();