Subject: Re: -current kernel quirks
To: Hauke Fath <hauke@Espresso.Rhein-Neckar.DE>
From: Michael L. Hitch <>
List: current-users
Date: 10/07/1998 09:41:32
On Oct  6,  3:36pm, "Michael L. Hitch" wrote:
> On Oct  6, 11:03pm, Hauke Fath wrote:
> > now that -current kernel sources build again for mac68k, I see a fatal
> > tendency of dumping core with userland stuff. I cannot even login as root
> > on serial console; I can get into my normal account but things like
> > resizing an xterm (signals here?) take my shell away with an Illegal
> > Instruction Error or some such.
>   This may be due to sigcode [in m68k/m68k/sigcode.s] loading D0 using
> a "movew", but the trap 3 handler compares all 32 bits of D0.  If it
> doesn't match, the trap 3 handler treats it as an "Illegal Instruction"
> fault.
>   I've also found that the trap 1 handler destroys the contents of D0, which
> breaks any program using longjmp() to pass a specific value.

  As Jason pointed out, he had fixed these problems - I just hadn't caught
the commit message in source-changes and didn't realize they were fixed.
I was using Saturday's SUP, and after I added the files Jason changed, my
amiga system ran fine.

  Since Hauke Fath indicated that he was using a more recent sup than I
was, the problem I was seeing shouldn't be the same thing.


Michael L. Hitch
Computer Consultant
Information Technology Center
Montana State University	Bozeman, MT	USA