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Re: [PATCH] libdwfl: Make sure to set the CFI return register only once (for ppc64).
- From: Mark Wielaard <mjw at redhat dot com>
- To: elfutils-devel at lists dot fedorahosted dot org
- Date: Wed, 25 Dec 2013 22:07:38 +0100
- Subject: Re: [PATCH] libdwfl: Make sure to set the CFI return register only once (for ppc64).
On Wed, Dec 25, 2013 at 08:02:28PM +0100, Jan Kratochvil wrote:
> On Sat, 21 Dec 2013 21:56:35 +0100, Mark Wielaard wrote:
> > On PPC64 there are two DWARF registers numbers that can represent the
> > same register. If that register is the CIE return register then we only
> > want to set it once. The second setting will confuse the unwinder.
> OK with the patch. It is ugly but I do not know anything better.
Yeah, it is somewhat unfortunate we need something like this, but
I couldn't think of something better either. Pushed.