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Date: Tue, 09 Mar 2004 20:03:00 -0000
From: Andrew Cagney <cagney@gnu.org>
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To: Manoj Iyer <manjo@austin.ibm.com>
Cc: gdb@sources.redhat.com
Subject: Re: (PPC64) 64 bit GDB unable to set br in 32bit app
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> Andrew,
> 
> I am trying to debug a 32 bit app using a 64 bit GDB on a PowerPC64 bit
> machine, 

You'll need a very recent GDB (which contains fixes for the can't insert 
breakpoint problem you noticed) a long with these fixes:
http://sources.redhat.com/ml/gdb-patches/2004-03/msg00177.html
http://sources.redhat.com/ml/gdb-patches/2004-03/msg00176.html
which make GDB's handling of register sets more robust.

Andrew