#include "idt.h"
#include <stdint.h>

#define low_16(address) (uint16_t)((address) & 0xFFFF)
#define high_16(address) (uint16_t)(((address) >> 16) & 0xFFFF)

void set_idt_gate(int n,uint32_t handler) {
    idt[n].low_offset=low_16(handler);
    idt[n].sel=KERNEL_CS;
    idt[n].always0=0;
    idt[n].flags=0xEE;
    idt[n].high_offset=high_16(handler);
}

void set_idt() {
    idt_reg.base=(uint32_t) &idt;
    idt_reg.limit=IDT_ENTRIES * sizeof(idt_gate_t) - 1;
    /* Don't make the mistake of loading &idt -- always load &idt_reg */
    asm volatile("lidtl (%0)":: "r" (&idt_reg));
}