29 lines
812 B
C
29 lines
812 B
C
#ifndef IDT_H
|
|
#define IDT_H
|
|
#include "../include/types.h"
|
|
#include <stdint.h>
|
|
|
|
typedef struct {
|
|
uint16_t isr_low; // The lower 16 bits of the ISR's address
|
|
uint16_t kernel_cs; // The GDT segment selector that the CPU will load into CS before calling the ISR
|
|
uint8_t reserved; // Set to zero
|
|
uint8_t attributes; // Type and attributes; see the IDT page
|
|
uint16_t isr_high; // The higher 16 bits of the ISR's address
|
|
} __attribute__((packed)) idt_entry_t;
|
|
|
|
__attribute__((aligned(0x10)))
|
|
static idt_entry_t idt[256]; // Create an array of IDT entries; aligned for performance
|
|
|
|
typedef struct {
|
|
uint16_t limit;
|
|
uint32_t base;
|
|
} __attribute__((packed)) idtr_t;
|
|
|
|
static idtr_t idtr;
|
|
|
|
void idt_set_descriptor(uint8 vector, uint32 isr, uint8_t flags);
|
|
void idt_set();
|
|
|
|
#endif
|
|
|