mirror of
https://github.com/cfenollosa/os-tutorial.git
synced 2024-10-27 20:34:19 +00:00
18 lines
491 B
C
18 lines
491 B
C
#include "idt.h"
|
|
#include "../kernel/util.h"
|
|
|
|
void set_idt_gate(int n, u32 handler) {
|
|
idt[n].low_offset = low_16(handler);
|
|
idt[n].sel = KERNEL_CS;
|
|
idt[n].always0 = 0;
|
|
idt[n].flags = 0x8E;
|
|
idt[n].high_offset = high_16(handler);
|
|
}
|
|
|
|
void set_idt() {
|
|
idt_reg.base = (u32) &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));
|
|
}
|