From: Daniel Jacobowitz <dan@debian.org>
To: Jakub Jelinek <jakub@redhat.com>
Cc: Roland McGrath <roland@redhat.com>,
linux-kernel@vger.kernel.org, Ingo Molnar <mingo@redhat.com>
Subject: Re: PTRACE_GET_THREAD_AREA
Date: Fri, 20 Dec 2002 11:08:17 -0500 [thread overview]
Message-ID: <20021220160817.GA26717@nevyn.them.org> (raw)
In-Reply-To: <20021220105513.J27455@devserv.devel.redhat.com>
On Fri, Dec 20, 2002 at 10:55:16AM -0500, Jakub Jelinek wrote:
> On Fri, Dec 20, 2002 at 10:48:29AM -0500, Daniel Jacobowitz wrote:
> > Eventually most or all targets will have thread-specific data
> > implemented; I don't want to have to redo this for each one.
>
> Well, but on most arches you don't need any kernel support for TLS.
> On sparc32/sparc64/IA-64/s390/s390x and others you simply have one
> general register reserved for it by the ABI, on Alpha you use a PAL
> call.
> set_thread_area/get_thread_area is IA-32/x86-64 specific.
Oh, right, I guess we won't need anything if it's just in a register :)
Architecture-specific it is, then. For Alpha (and probably MIPS) we
can add a ptrace equivalent of the trap to fetch the pointer. Patch
looks fine to me.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
next prev parent reply other threads:[~2002-12-20 15:59 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-20 8:32 PTRACE_GET_THREAD_AREA Roland McGrath
2002-12-20 10:24 ` PTRACE_GET_THREAD_AREA Christoph Hellwig
2002-12-20 15:44 ` PTRACE_GET_THREAD_AREA Daniel Jacobowitz
2002-12-20 17:36 ` PTRACE_GET_THREAD_AREA Linus Torvalds
2002-12-20 15:48 ` PTRACE_GET_THREAD_AREA Daniel Jacobowitz
2002-12-20 15:55 ` PTRACE_GET_THREAD_AREA Jakub Jelinek
2002-12-20 16:08 ` Daniel Jacobowitz [this message]
2002-12-20 21:27 ` PTRACE_GET_THREAD_AREA Roland McGrath
2002-12-20 17:42 ` PTRACE_GET_THREAD_AREA Linus Torvalds
2003-01-13 3:51 ` PTRACE_GET_THREAD_AREA Roland McGrath
2003-01-13 4:03 ` PTRACE_GET_THREAD_AREA Linus Torvalds
2003-01-13 5:29 ` PTRACE_GET_THREAD_AREA Roland McGrath
[not found] <3E22B2F0.31397.E719685@localhost>
2003-01-14 3:15 ` PTRACE_GET_THREAD_AREA Roland McGrath
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