pic_get_irq
irq2 = pic_get_irq(&s->pics[1]);
irq = pic_get_irq(&s->pics[0]);
irq = pic_get_irq(&s->pics[0]);
irq2 = pic_get_irq(&s->pics[1]);
ret = pic_get_irq(s);
while ((irq = pic_get_irq(irq + 1)) != NO_IRQ)