28 lines
578 B
C
28 lines
578 B
C
#include <stdint.h>
|
|
|
|
#include "idt.h"
|
|
#include "io.h"
|
|
#include "string.h"
|
|
|
|
struct idt_entry idt[IDT_ENTRIES];
|
|
struct idt_ptr idtp;
|
|
|
|
void idt_set_gate(uint8_t num, uint32_t base, uint16_t sel, uint8_t flags)
|
|
{
|
|
idt[num].base_lo = base & 0xFFFF;
|
|
idt[num].base_hi = (base >> 16) & 0xFFFF;
|
|
idt[num].sel = sel;
|
|
idt[num].always0 = 0;
|
|
idt[num].flags = flags | 0x60;
|
|
}
|
|
|
|
void idt_install()
|
|
{
|
|
idtp.limit = (sizeof(struct idt_entry) * IDT_ENTRIES) - 1;
|
|
idtp.base = (uint32_t)&idt;
|
|
|
|
memset(&idt, 0, sizeof(struct idt_entry) * IDT_ENTRIES);
|
|
|
|
idt_load();
|
|
}
|