ID_AA64ISAR2_BC_SHIFT
#define ID_AA64ISAR2_BC_MASK (0xfULL << ID_AA64ISAR2_BC_SHIFT)
#define ID_AA64ISAR2_BC_NONE (0x0ULL << ID_AA64ISAR2_BC_SHIFT)
#define ID_AA64ISAR2_BC_IMPL (0x1ULL << ID_AA64ISAR2_BC_SHIFT)