Re: NetBSD on Sun T5220

[Sad Clouds <cryintothebluesky%gmail.com@localhost>]

On Wed, 01 Oct 2025 17:15:24 +1000
matthew green <mrg%eterna23.net@localhost> wrote:

> Sad Clouds writes:
> > On Tue, 30 Sep 2025 19:23:20 +0000 (UTC)
> > Palle Lyckegaard <palle%freeshell.org@localhost> wrote:
> >
> > > I have additional debugging output that shows that  the register window is 
> > > probably restored with incorrect values probably originating from a spill 
> > > trap at trap level 1 that stores the incorrect register window.
> >
> > Do you know where the code which handles window registers is located?
> > Is it somewhere in src/sys/arch/sparc64/sparc64/locore.s?
> 
> looks like pcbspill_other and spill_normal_to_user_stack in
> locore.s, yeah.  there's more, but these are the low level
> sun4v traps.
> 
> 
> .mrg.

OK thanks. I'll setup identical test environments on both sun4v and
sun4u and see how far I can debug this.