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Date: Mon, 10 Nov 2008 20:25:00 -0000
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From: Mark Kettenis <mark.kettenis@xs4all.nl>
To: stanshebs@earthlink.net
CC: gingold@adacore.com, gdb-patches@sourceware.org
In-reply-to: <4918946A.6050501@earthlink.net> (message from Stan Shebs on Mon, 	10 Nov 2008 12:07:06 -0800)
Subject: Re: [RFA] Darwin Port (Part 1: changes in common files)
References: <6C04CB59-A202-4D7E-B2DA-97DAE3F3ED85@adacore.com> <200811101858.mAAIwoKj009428@brahms.sibelius.xs4all.nl> <4918946A.6050501@earthlink.net>
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> Date: Mon, 10 Nov 2008 12:07:06 -0800
> From: Stan Shebs <stanshebs@earthlink.net>
> 
> Mark Kettenis wrote:
> > Why do you need both Darwin and Darwin64?  We don't do this for other
> > operating systems that have both a 32-bit and a 64-bit variant.
> >
> >   
> This may or may not be necessary - the ABIs are different, and both 
> 32-bit and 64-bit executables can be run at the same time by the same 
> kernel, no rebooting needed. So a GDB session does have to distinguish 
> the two types of executables.

That's no different from Linux or FreeBSD or NetBSD.  Those systems
will happily run 32-bit and 64-bit executables alongside eachother (as
long as you are running a 64-bit kernel).