ID_AA64PFR0_EL1_SHIFT
#define ID_AA64PFR0_EL1_MASK (0xfULL << ID_AA64PFR0_EL1_SHIFT)
#define ID_AA64PFR0_EL1_64 (0x1ULL << ID_AA64PFR0_EL1_SHIFT)
#define ID_AA64PFR0_EL1_64_32 (0x2ULL << ID_AA64PFR0_EL1_SHIFT)