have size 4.
(REGISTER_VIRTUAL_SIZE): Likewise.
(REGISTER_VIRTUAL_TYPE): Lower 32 fp regs have type float.
Upper 32 fp regs have type double.
* sparc-tdep.c (NUM_SPARC_FPREGS): Replace with
(FP_REGISTER_BYTES): this, and update all uses.
(FP_MAX_REGNUM): Define if not already.
(get_saved_register): Handle new sparc64 fp regs.
(sparc_frame_find_saved_regs): Likewise.
(sparc_print_register_hook): Only print fp regs < 32 as doubles.
Add code to handle long doubles when gdb does.
(_initialize_sparc_tdep): Use print_insn_sparc64 if sparc64.