>NetBSD on mips currently 'normally' uses, basically, -mips1 with some
>bad variations on floating point (and there, they've mostly been
>phased out as far as I can tell because of the difficulty people have
>encountered managing the different binary sets)

just out of curiousity: what were/are the bad variations? i thought we
used vanilla mips1 (sgi o32, not n32, but otherwise vanilla).

There are some bugs wrt 64-bit support in how signal-state is saved,
introduced by some careless people; but that's all I was aware of.