[M3devel] help booting CM3 on FreeBSD 4.11?

[Tony Hosking]

Broken mostly because updated libraries detect forging of thread  
contexts (state) for security reasons and blow up.

On 25 Apr 2009, at 14:12, Jay wrote:

> Cool.
>
>  > If I use user threads, it's a different story (which is probably  
> too bad,
>
> Oops, right, I forgot, I should have mentioned that, user threads  
> have likely been broken on all platforms for a while. I noticed that  
> on PPC_LINUX. I think it is trivial to fix. Or use pthreads..
>
>
>  - Jay
>
>
> > To: jay.krell at cornell.edu
> > Date: Fri, 24 Apr 2009 20:38:17 -0700
> > From: mika at async.caltech.edu
> > CC: m3devel at elegosoft.com
> > Subject: Re: [M3devel] help booting CM3 on FreeBSD 4.11?
> >
> > Jay (and others),
> >
> > Success! I think.... I was able to build the compiler, after much
> > experimentation, by using Jay's build order and linking with - 
> libc_r.
> > Mentor works, and that's usually a good sign.
> >
> > Jay, your assembly worked too! And as you say, it's much easier to
> > bootstrap with that than to do what I was trying to do (but I did
> > both, several times, just to make sure).
> >
> > I don't know why I was having linking problems with -libc_r earlier.
> > Now it just seems to work. So, pthreads on FreeBSD 4.
> >
> > If I use user threads, it's a different story (which is probably  
> too bad,
> > as I know that user threads work absolutely fine in my old version  
> of CM3):
> >
> > I can build a compiler fine, but the bootstrapped cm3 crashes in
> > the user thread code. Note that exactly the same thing happens  
> whether
> > I bootstrap with the assembly version from Jay or from v. 5.3.4,  
> which
> > I think is what I had. Here we go:
> >
> > Starting program: /usr/local/cm3/pkg/cm3/FreeBSD4/cm3
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > 16_82568bb in RTHooks.PushEFrame (frame=16_bfbff3f4) at ../src/ 
> thread/POSIX/ThreadPosix.m3:1599
> > 1599 f.next := self.context.handlers;
> > (gdb) where
> > #0 16_82568bb in RTHooks.PushEFrame (frame=16_bfbff3f4) at ../src/ 
> thread/POSIX/ThreadPosix.m3:1599
>

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