Add opaque declarations.
(sparc64nbsd_sigcontext_saved_regs): New prototype.
* sparc64nbsd-tdep.c (sparc64nbsd_sigcontext_saved_regs): New
function with code split out from
sparc64nbsd_sigcontext_frame_cache.
(sparc64nbsd_sigcontext_frame_cache): Use
sparc64nbsd_sigcontext_saved_regs.
(_initialize_sparc64nbsd_tdep): Don't register OS ABI handler for
OpenBSD.
* sparc64obsd-tdep.c: New file.
* Makefile.in (ALLDEPFILES): Add sparc64obsd-tdep.c.
(sparc64obsd-tdep.o): New dependency.
* configure.tgt (sparc64-*-openbsd*): Set gdb_target to obsd64 and
gdb_osabi to GDB_OSABI_OPENBSD_ELF.
* config/sparc/obsd64.mt: New file.
