gicc_read
uint32_t iar = gicc_read(sc, GICC_IAR);
iar = gicc_read(sc, GICC_IAR);
old_ipl, gicc_read(sc, GICC_PMR), gicc_read(sc, GICC_HPPIR));
gicc_read(sc, GICC_PMR));
uint32_t pmr = gicc_read(sc, GICC_PMR);
const uint32_t iidr = gicc_read(sc, GICC_IIDR);