mirror of
https://github.com/Tom-on64/kern.git
synced 2026-11-03 18:22:22 +00:00
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
#ifndef ISRS_H
|
|
#define ISRS_H
|
|
|
|
#include <interrupt/idt.h>
|
|
#include <stdio.h>
|
|
|
|
// Exception handlers
|
|
__attribute__ ((interrupt))
|
|
void excp_divideErr(intFrame_t* iframe) { // ISR 0
|
|
printf("\x1b[1M[ Division Error ]\n\x1b[8M");
|
|
iframe->eip++;
|
|
}
|
|
|
|
__attribute__ ((interrupt))
|
|
void excp_doubleFault(intFrame_t* iframe, uint32_t errCode) { // ISR 8
|
|
printf("\x1b[1M[ Double Fault ]\n\x1b[8M"); // Error code should be 0 (TODO: Maybe check if it's != 0?)
|
|
__asm__ volatile ("cli; hlt");
|
|
}
|
|
|
|
__attribute__ ((interrupt))
|
|
void excp_pageFault(intFrame_t* iframe, uint32_t errCode) { // ISR 14
|
|
uint32_t badAddress = 0;
|
|
|
|
// cr2 should contain invalid address
|
|
__asm__ volatile("movl %%cr2, %0" : "=r"(badAddress));
|
|
|
|
printf("\x1b[1M[ Page Fault : 0x%x ] - Tried to access 0x%x.\n\x1b[8M", errCode, badAddress);
|
|
__asm__ volatile ("cli; hlt");
|
|
}
|
|
|
|
__attribute__ ((interrupt))
|
|
void excp_reserved(intFrame_t* iframe) { // ISR 15
|
|
print("\x1b[1M[ Unknown Exception ]\n\x1b[8M");
|
|
__asm__ volatile ("cli; hlt");
|
|
}
|
|
|
|
// TODO: Add more (because there's always more)
|
|
|
|
// Repetative isr definitions
|
|
void setupExceptions() {
|
|
for (uint8_t i = 0; i < 32; i++) {
|
|
idtSetGate(i, excp_reserved, TRAP_GATE_FLAGS); // Doesn't account for err codes, will just halt anyways
|
|
}
|
|
|
|
idtSetGate(0, excp_divideErr, TRAP_GATE_FLAGS);
|
|
idtSetGate(8, excp_doubleFault, TRAP_GATE_FLAGS);
|
|
idtSetGate(14, excp_pageFault, TRAP_GATE_FLAGS);
|
|
idtSetGate(15, excp_reserved, TRAP_GATE_FLAGS);
|
|
}
|
|
|
|
#endif
|