ICU_INT_HWMASK
hwpend = footbridge_ipending & ICU_INT_HWMASK & ~footbridge_imask[ipl];
uint32_t tmp = intr_enabled & ICU_INT_HWMASK;
hwpend |= (footbridge_ipending & ICU_INT_HWMASK) & ~imask;
while ((irqbits = icreg(INTCTL_IRQPND) & ICU_INT_HWMASK) != 0) {
: "r" (intr_steer & ICU_INT_HWMASK));
hwpend |= ((i80321_ipending & ICU_INT_HWMASK) & ~imask);
: "r" (intr_enabled & ICU_INT_HWMASK));
hwpend = (i80321_ipending & ICU_INT_HWMASK) & ~i80321_imask[new];