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Re: Fw: Re: Java interpreter on ARM GNU/Linux
- From: Andrew Haley <aph-gcc at littlepinkcloud dot COM>
- To: Daniel Jacobowitz <dan at debian dot org>
- Cc: debian-arm at lists dot debian dot org, java at gcc dot gnu dot org, Richard Earnshaw <Richard dot Earnshaw at arm dot com>
- Date: Fri, 13 Jul 2007 11:08:15 +0100
- Subject: Re: Fw: Re: Java interpreter on ARM GNU/Linux
- References: <20070712225319.GA11532@knossos.aleph1.co.uk> <20070713030322.GA10630@caradoc.them.org>
Daniel Jacobowitz writes:
> On Thu, Jul 12, 2007 at 11:53:19PM +0100, Wookey wrote:
No he didn't. I did.
> > I can work around some of the failures, but I can't really be
> > bothered: the real fix for this is EABI.
>
> Unfortunately, the EABI won't fix this either. In its native form it
> supported neither forced unwinding nor _Unwind_Backtrace; we added
> forced unwinding for the benefit of NPTL (though we're still talking
> to ARM intermittently about its semantics). But no one's tried to
> make _Unwind_Backtrace work yet, and it's not clear how to. To me
> anyway.
Interesting. Presumably there is enough information in the unwinder
data to do it? If it's technically impossible to do a simple
backtrace then I have to wonder what the point of the EABI is.
Andrew.