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Date: Thu, 04 Sep 2003 22:16:00 -0000
From: Andrew Cagney <ac131313@redhat.com>
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To: Mark Kettenis <kettenis@chello.nl>
Cc: drow@mvista.com, gdb@sources.redhat.com
Subject: Re: [RFC] Register sets
References: <200308232249.h7NMnvhh090154@elgar.kettenis.dyndns.org> <20030824164347.GA17520@nevyn.them.org> <200308252234.h7PMYqFu001245@elgar.kettenis.dyndns.org> <3F4B8173.1000302@redhat.com> <20030826165547.GA22836@nevyn.them.org> <86he3xrkjb.fsf@elgar.kettenis.dyndns.org> <20030904125514.GA2577@nevyn.them.org> <3F574587.70401@redhat.com> <20030904140822.GA22838@nevyn.them.org> <200309042205.h84M506L034340@elgar.kettenis.dyndns.org>
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>  > I should note that I do know of a second way of handling cross 
>    > architectures (x86-64 on i386 et.al.).  Add a table of cross 
>    > architecture unwinders and then allow different frames to have different 
>    > architectures vis:
>    > 
>    > 	x86-64 frame
>    > 	<x86-64 X i386>
>    > 	i386 frame
>    > 	i386 frame
>    > 	<ia64 X i386>
>    > 	ia64 frame
>    > 
>    > but that's getting way ahead of many other changes.
> 
> A cross unwinder here would be a method that converts say an amd64
> register cache into an i386 register cache (among other things)?

Yes, but it would do the conversion at the frame level.

Andrew