[freenet-tech] Technology / Features

[Boehm, Hans]

David Mosberger has been working on ways to support dynamically generated
(e.g. by a JIT) code in the IA64 unwind interface.

I would guess that interpreter frames can also be handled by noticing that
the PC in a certain frame points to the interpreter, and then looking at
alternate data structures.  But I doubt this has been though through.

Hans

> -----Original Message-----
> From: Tom Tromey [mailto:tromey@redhat.com]
> Sent: Thursday, February 28, 2002 5:21 PM
> To: Jeff Sturm
> Cc: Bryce McKinlay; java@gcc.gnu.org
> Subject: Re: [freenet-tech] Technology / Features
> 
> 
> >>>>> "Jeff" == Jeff Sturm <jsturm@one-point.com> writes:
> 
> Jeff> Well, since libunwind has this working (on ia64, at the moment)
> Jeff> it would make sense to look at their API, with or without using
> Jeff> any of their code.  The intent of the author, David Mosberger,
> Jeff> seems to be making this a drop-in replacement and perhaps offer
> Jeff> it to gcc and/or glibc.
> 
> We're going to need something special eventually, because we need to
> know the class corresponding to every stack frame -- including
> interpreter and/or JIT frames.
> 
> I don't have a timeframe for this stuff, of course, but one of my big
> goals is to eventually get libgcj used as the Java implementation in
> Mozilla.  This means we'll need AWT, plus all the security stuff we've
> avoided for so long (stack overflow checking, SecurityManager and thus
> stack trace support, plus a complete SecurityManager audit of the
> libraries -- a lot of work).
> 
> Maybe we can get some interpreter/JIT support taken into consideration
> by libunwind.
> 
> Tom
>