Re: Ultrix compatibility?

[christos%astron.com@localhost (Christos Zoulas)]

In article 
<5219418f09576f07aa22360172b87ded.squirrel%occs.cs.oberlin.edu@localhost>,
 <hbent%cs.oberlin.edu@localhost> wrote:
>>
>> On Oct 7, 2008, at 3:57 AM, David Brownlee wrote:
>>
>>> On Mon, 6 Oct 2008, hbent%cs.oberlin.edu@localhost wrote:
>>>
>>>> I'm at a loss here.  Normally I would go into the kernel source
>>>> and throw
>>>> in some printf statements, but I wasn't able to grok the code
>>>> sufficiently
>>>> to figure out where they should be going.  Does anyone have any
>>>> suggestions?
>>>
>>>     You could try NetBSD 4 & NetBSD 3 to find out where the breakage
>>>     was introduced. I suspect some of the changes since NetBSD-4 to
>>>     introduce the new threading and MP code may have had a side
>>>     effect, or some of the compat code may not have been updated
>>>     fully...
>>
>> Run it with gdb and see what instruction it's failing on.
>>
>
>I already tried that.  gdb barfs because, unsurprisingly, it doesn't
>understand the format of the ultrix executable:

Add some debugging in the exec path to show what happens during emulation
probing.

christos