> > BTW, Could you explain the reasons to change the API in <machine/asm.h>,
> > too.
> 
> Old programs are still compilable.   

I think you will remove these old macros eventually.
Is this supposition correct ?
Old programs won't be compatible after that.

> Continuing to use MachAsmDef.h derivated local dialects won't be
> valued for next decades of NetBSD.

If there are no reasons to introduce new macros, continuing to use old
macros is apparently better.

So why are the changes to <machine/asm.h> needed ?
--
soda