INTC_MASK_REG
INTC_WRITE(sc, INTC_MASK_REG(group), ~sc->sc_enabled_irqs[group]);
INTC_WRITE(sc, INTC_MASK_REG(group), ~sc->sc_enabled_irqs[group]);
INTC_WRITE(sc, INTC_MASK_REG(i), ~0U);
*INTC_MASK_REG = 0;
*INTC_MASK_REG |= ic->mask;
*INTC_MASK_REG &= ~ic->mask;
intc_cause = *INTC_STATUS_REG & *INTC_MASK_REG;
intc_cause = *INTC_STATUS_REG & *INTC_MASK_REG;
*INTC_MASK_REG |= INTC_INT5;