void isr_handler(int_reg_t *r) {
    interrupt_lock();

    /* If the int number is in range */
    if (r->int_num < IDT_ENTRIES) {
        if (r->int_num < 32) {
            /* Exception */
            uint64_t cr2;
            asm volatile("movq %%cr2, %0;" : "=r"(cr2));
            /* Ensure the display is not locked when we crash */
            unlock(&base_tty.tty_lock);
            unlock(&vesa_lock);
            clear_buffer();
            tty_seek(0, 0, &base_tty);
            sprintf("\nException!");
            sprintf("\nRAX: %lx RBX: %lx RCX: %lx \nRDX: %lx RBP: %lx RDI: %lx \nRSI: %lx R08: %lx R09: %lx \nR10: %lx R11: %lx R12: %lx \nR13: %lx R14: %lx R15: %lx \nRSP: %lx ERR: %lx INT: %lx \nRIP: %lx CR2: %lx", r->rax, r->rbx, r->rcx, r->rdx, r->rbp, r->rdi, r->rsi, r->r8, r->r9, r->r10, r->r11, r->r12, r->r13, r->r14, r->r15, r->rsp, r->int_err, r->int_num, r->rip, cr2);
            while (1) { asm volatile("hlt"); }
        }
        /* If the entry is present */
        if (handlers[r->int_num]) {
            /* Call the handler */
            handlers[r->int_num](r);
        }
    } else {
        uint64_t cr2;
        asm volatile("movq %%cr2, %0;" : "=r"(cr2));
        sprintf("\nBad int no %lu", r->int_num);
        sprintf("\nRAX: %lx RBX: %lx RCX: %lx \nRDX: %lx RBP: %lx RDI: %lx \nRSI: %lx R08: %lx R09: %lx \nR10: %lx R11: %lx R12: %lx \nR13: %lx R14: %lx R15: %lx \nRSP: %lx ERR: %lx INT: %lx \nRIP: %lx CR2: %lx", r->rax, r->rbx, r->rcx, r->rdx, r->rbp, r->rdi, r->rsi, r->r8, r->r9, r->r10, r->r11, r->r12, r->r13, r->r14, r->r15, r->rsp, r->int_err, r->int_num, r->rip, cr2);
        while (1) { asm volatile("hlt"); }
    }

    interrupt_unlock();

    // If we make it here, send an EOI to our LAPIC
    write_lapic(0xB0, 0);
}