linux-kernel - Re: [PATCH -mm 42/43] x86 core dump TLS

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Message-ID: <20101020103144.673c6bdc@tomh>
Date:	Wed, 20 Oct 2010 10:31:44 -0400
From:	Tom Horsley <tom.horsley@...r.com>
To:	<linux-kernel@...r.kernel.org>
CC:	"Horsley, Tom" <Tom.Horsley@...r.com>
Subject: Re: [PATCH -mm 42/43] x86 core dump TLS

Way back in 2007 this patch started wending its way into the
kernel:

http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg242889.html

That adds the NT_386_TLS NOTE segment entries to core files, which
are quite handy for recovering the pthread_self() values for
multiple threads in a core file from a 32 bit x86 threaded program.

Does anyone know why there doesn't appear to be any similar info
dumped for the thread info in 64 bit x86_64 threaded programs?
The pthread library uses the arch_prctl() service to setup the
segment registers there, and it would be handy for debuggers
to be able to recover the thread info in 64 bit core files as well.
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