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From: Paul Brook <paul@codesourcery.com>
Subject: Re: [Qemu-devel] Re: [PATCH] x86_64 debug registers for gdb
Date: Sat, 21 Apr 2007 00:13:40 +0100
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To: qemu-devel@nongnu.org
Cc: Jan Kiszka <jan.kiszka@web.de>

> > These are all wrong on x86-64.
>
> Then what about pointing me to the correct information to fix this, hmm?
>  I browsed gdb code and docs but found no obvious packet format
> description. Constructive help is welcome, likely I'm just blind.

gdb/amd64-tdep.c is the authorative source. Specifically amd64_register_info.
Similar information also in gdb/regformats/reg-x86-64.dat

Paul