// idt.h

#include <common.h>

/*
  Represents an entry in the Interrupt Descriptor Table (IDT). The
  struct is packed because we don't want any padding added to it.
*/
struct idt_entry
{
  unsigned short offset_hibits;    /* offset high bits */
  unsigned short offset_lobits;    /* offset low  bits */

  unsigned short selector;         /* selector */
  unsigned char zero;
  unsigned char flags;             /* flags */
} __attribute__((packed));

struct idt_entry IDT[286];

void idt_init();
void idt_add_entry(int isr_num, unsigned long isr_handler, short selector, char flags);

void idt_setup_pic();
void idt_setup_irq();