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Date:      Wed, 19 Dec 2001 15:48:36 -0500 (EST)
From:      Daniel Eischen <eischen@pcnet1.pcnet.com>
To:        Bernd Walter <ticso@cicely9.cicely.de>
Cc:        Daniel Eischen <deischen@FreeBSD.ORG>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG
Subject:   Re: cvs commit: src/lib/libc_r/uthread uthread_init.c
Message-ID:  <Pine.SUN.3.91.1011219154317.13423A-100000@pcnet1.pcnet.com>
In-Reply-To: <20011218051453.GD18149@cicely9.cicely.de>

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On Tue, 18 Dec 2001, Bernd Walter wrote:
> On Mon, Dec 17, 2001 at 06:03:00PM -0800, Daniel Eischen wrote:
> > deischen    2001/12/17 18:02:59 PST
> > 
> >   Modified files:
> >     lib/libc_r/uthread   uthread_init.c 
> >   Log:
> >   Fix the retrieval of USRSTACK via sysctl so that it works for 64-bit
> >   archs.  This should fix libc_r on alpha.
> 
> Unfortunately it doesn't fix all problems with libc_r on alpha yet.

The problem seems to be with modifying a jmp_buf to return to
different context.  There are alpha specific macros to munge
with the context of a jmp_buf that use to work but no longer do.

There is a simple test program at:

  http://people.freebsd.org/~deischen/test_jmpbuf.c

that demonstrates the problem.  If someone more knowledgable
about the alpha can get this to work, I can fix the problem.

-- 
Dan Eischen

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