sparc_phys_banks
extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS+1];
struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS+1];
const struct sparc_phys_banks *x = a, *y = b;
sort(sp_banks, num_ents, sizeof(struct sparc_phys_banks),