/******************************************************************
 *    idt.h  -  INTERRUPT DESCRIPTOR TABLE                        *
 *      Contains structures and function declarations for IDT     *
 ******************************************************************/

#ifndef __IDT_H
#define __IDT_H

/* Defines an IDT entry */
struct idt_entry
{
    unsigned short base_lo;
    unsigned short sel;
    unsigned char always0;
    unsigned char flags;
    unsigned short base_hi;
} __attribute__((packed));

struct idt_ptr
{
    unsigned short limit;
    unsigned int base;
} __attribute__((packed));


/* This exists in 'start.asm', and is used to load our IDT */
extern void i86_idt_load();
extern void i86_idt_set_gate(unsigned char num, unsigned long base, unsigned short sel, unsigned char flags);
extern struct idt_entry* i86_idt_get_gate(unsigned char num);
extern void i86_idt_install();

#endif