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Re: dwarf2 eh for alpha, mark 2
- To: Richard Henderson <rth at cygnus dot com>
- Subject: Re: dwarf2 eh for alpha, mark 2
- From: Jeffrey A Law <law at cygnus dot com>
- Date: Wed, 09 Sep 1998 22:20:29 -0600
- cc: egcs-patches at cygnus dot com
- Reply-To: law at cygnus dot com
In message <19980909012313.C18516@dot.cygnus.com>you write:
> Rather than do objectionable things with return addresses, as
> with the previous patch, this one streamlines the exception
> handling mechanism itself.
> The Idea here is rather than manipulate things piecemeal, trying
> to modify return register save slots and generating stubs, we
> simply arrange to communicate directly with the epilogue code
> so that we just DTRT in the first place.
> A second part of the patch has to do with how we find registers in
> libgcc2.c. I can't figure out how what we have ever worked on
> anything except Sparc. I see that Irix defaults to sjlj eh, but
> not other MIPSen, so I must presume it does. But for the Alpha I
> found it consistently looking one frame too far back.
> Anyway, the following was tested on Alpha, Sparc, and x86. If it
> is acceptable, I'll see about updating the epilogue code for the
> other targets.
[ ... ]
No objections here. I'll leave it to you and Jason to sort out the