started working on interrupts

[psx_test1] / src / intr.c

#include "intr.h"
#include "debug.h"

static void (*handler[NUM_IRQS])(struct intr_frame*);

void set_irq_handler(int irq, void (*func)(struct intr_frame*))
{
        handler[irq] = func;
}

void intr_dispatch(struct intr_frame *frm)
{
        if(((frm->cause >> 2) & 0x1f) == 0) {
                /* interrupt */
        } else {
                panic("unhandled exception");
        }
}