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Implemented PIT

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Tom-on
2025-04-28 18:48:40 +02:00
parent bbb3c131b3
commit b8fba03773
7 changed files with 94 additions and 14 deletions
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kernel/src/isr.c
+7 -9
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@@ -75,28 +75,26 @@ int isr_init(void) {
return 0;
}
void isr_register_irq(uint8_t i, isr_handler_ptr handler) {
void isr_register(uint8_t i, isr_handler_ptr handler) {
if (i > 16) return; // Security
irq_handlers[i] = handler;
}
void isr_send_eoi(uint8_t irq) {
if (irq >= 8) {
outb(0xa0, 0x20);
}
if (irq >= 8) outb(0xA0, 0x20);
outb(0x20, 0x20);
}
// TODO: Write fault handlers and make this more robust
int isr_handle_interrupt(struct isr_int_frame iframe) {
if (iframe.interrupt < 32) {
// ISRs 0-31 - Exceptions
panic(exceptions[iframe.error]);
panic(exceptions[iframe.interrupt]);
} else if (iframe.interrupt >= 32 && iframe.interrupt < 48) {
// ISRs 32-47 - Hardware interrupts
uint8_t irq = iframe.interrupt - 32;
if (irq_handlers[irq]) {
irq_handlers[irq](&iframe);
isr_send_eoi(irq);
}
if (irq_handlers[irq]) irq_handlers[irq](&iframe);
isr_send_eoi(irq);
} else if (iframe.interrupt == 128) {
// ISR 128 - System call
return syscall_handler(&iframe);