RETURN_REGNUM from GR96_REGNUM and DUMMY_SAVE_GREGS from
DUMMY_SAVE_GR96, for handling kernel calling conventions
that use GR64+ rather than GR96+.
+ * tm-ultra3.h: New file, for use on Ultra3 Unix as well as for
+ remote debugging of Ultra3 kernel. Includes tm-29k.h and
+ overrides various things.
* remote-mm.c (mm_attach, mm_wait): Handle attach like
child_attach does, making a clean stop in the newly attached