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Date: Wed, 31 Mar 2010 17:27:00 -0000
From: Michael Snyder <msnyder@vmware.com>
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To: Pedro Alves <pedro@codesourcery.com>
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Subject: Re: Random gdbserver question (x86)
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Pedro Alves wrote:
> On Wednesday 31 March 2010 00:40:34, Michael Snyder wrote:
>> Question -- is gdbserver "multi-arch" to the extent that a 32-bit
>> gdbserver (built with target = i386) can debug a 64-bit app?
> 
> No, only the other way around.  It's "multi-arch" to the extent
> that a linux 64-bit gdbserver (built with target = x86-64) can
> debug a 32-bit app.  It used to only be, only 64x64 or 32x32 was
> possible; with multi-arch, 64x32 was made possible.
> 
>> I ask because linux-x86-low.c is full of ifdefs on the architecture.
>> It looks like most of the 64-bit code won't be compiled if the
>> build machine is 32-bit.
> 
> Correct.

Thanks for confirming.