dc(4) related misalignment trap

John Baldwin jhb at freebsd.org
Mon Nov 21 13:26:29 PST 2005

On Monday 21 November 2005 04:14 pm, John Baldwin wrote:
> On Monday 21 November 2005 09:49 am, John Baldwin wrote:
> > > Register s3 holds the sp variable ($2 in kgdb)
> > > Register t0 holds the result the left-hand side of the statement, which
> > > is not properly aligned for a 16-bit load ($7 = register t0 + 8).
> > >
> > > Rough patch to fix the problem attached:
> >
> > I think de(4) would need the same fix as well at least.
> Once I fixed another bug with de(4) due to ru@'s recent changes I wasn't
> able to reproduce an alignment trap with de(4) on my alpha, so although I
> have a patch for de(4) I can't test it.  How are you triggering the
> alignment fault? Do you have something other than 'ifconfig_dc0="DHCP"' in
> /etc/rc.conf?

Check that, it would help to let the multiuser boot finish before firing off 
the e-mail.  I did indeed get the alignment fault during dhcp, so I'll be 
testing that alignment patch in a minute or so.

John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org

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