On Wed, 23 Feb 2000 13:22:07 -0700 (MST) 
 "Michael L. Hitch" <mhitch@lightning.msu.montana.edu> wrote:

 >   How about even only reserving space in the trapframe for those registers
 > when DDB is defined as well?  Then you don't have the stack space taken up
 > as well when DDB isn't in the kernel.

I guess... tho debugging crash dumps might be a bit more difficult that
way (e.g. backtrace code would have to know different trapframe sizes).

        -- Jason R. Thorpe <thorpej@nas.nasa.gov>