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Re: 3.0: unwinder changes
- To: Jeff Sturm <jsturm at one-point dot com>
- Subject: Re: 3.0: unwinder changes
- From: Andrew Haley <aph at cambridge dot redhat dot com>
- Date: Wed, 6 Jun 2001 20:42:23 +0100 (BST)
- Cc: java at gcc dot gnu dot org
- References: <15123.52040.582564.802344@cuddles.cambridge.redhat.com><Pine.LNX.4.10.10106061533530.7871-100000@mars.deadcafe.org>
Jeff Sturm writes:
>
>
> On Tue, 29 May 2001, Andrew Haley wrote:
> > This patch fixes unwinding on PPC, i386, and Alpha.
>
> Andrew, do you have any idea what needs to be done for sparc? I've got
> testsuite failures on Invoke_1 and Thread_Alive, both related to signal
> handling.
>
> I'm assuming changes may be needed similar to what you did for
> i386-signal.h.
The critical file is config/sparc/linux.h, where we need to define
MD_FALLBACK_FRAME_STATE_FOR. This routine is basically just a
structure copy, copying each register from the save area in the
sigcontext left by the kernel to the frame state in the unwinder.
There are already examples for PPC, x86, and Alpha.
Andrew.