Here goes the ramdom list of issue under consideration.

- assigning new NetBSD MID for m88k processor.

Regretfully, OpenBSD m88k MID crashes to NetBSD/sparc64.  I'd ask to
assign new MIDs for mips64 in the same time.

- stdarg.h

I think the current implementation of GCC stdarg.h is over engineered.
(I've never seen XD88K or DG-UX native compiler implementation.  Is it
a GreenHill?).  The stack convention for "some args on registers" is
not much different from what MIPS processor's so-called o32.  If
compiler can provide layout alignment value on the fly for arbitrary
data types;

#define va_arg(ap, T)						\	
	((T *)(ap += (sizeof(T) == 8 && __alignof__(T) == 8)	\
                  ? ((long)(ap) & 4) + 8			\
		  : 4))[-1]

or something should be sufficient.  (BE assumed here)

Tohru Nishimura