From: Randolph Chung <randolph@tausq.org>
To: Joel Brobecker <brobecker@adacore.com>
Cc: gdb-patches@sources.redhat.com
Subject: Re: [RFC] Infinite backtraces...
Date: Tue, 07 Dec 2004 16:52:00 -0000 [thread overview]
Message-ID: <20041207163709.GY6359@tausq.org> (raw)
In-Reply-To: <20041207163147.GQ2524@adacore.com>
> I don't see how the stub unwinder code is going to be used if you
> are going to be skipping them. The only case when it is going to
> be used is when uwinding a program that was stopped just inside one.
> No?
not exactly...
1) it is used when stepping into a function called by a stub (this is
essential for software watchpointing; since there's hardware watch
pointing on hpux it may be less important)
2) it is used when the current frame's pc is 0
in this case, even if we skip the stub that calls the pthread start
function, the return from the real pthread_start function will still be
zero after you skip the stub, so we still need the stub unwinder to
return a null_frame_id to terminate the unwinding.
randolph
--
Randolph Chung
Debian GNU/Linux Developer, hppa/ia64 ports
http://www.tausq.org/
next prev parent reply other threads:[~2004-12-07 16:37 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-02 22:46 Joel Brobecker
2004-12-02 23:13 ` Joel Brobecker
2004-12-03 2:43 ` Randolph Chung
2004-12-03 2:57 ` Joel Brobecker
2004-12-03 4:53 ` Randolph Chung
2004-12-03 19:36 ` Joel Brobecker
2004-12-03 18:03 ` Randolph Chung
2004-12-03 18:20 ` Joel Brobecker
2004-12-03 18:22 ` Randolph Chung
2004-12-06 7:25 ` Randolph Chung
2004-12-07 10:07 ` Joel Brobecker
2004-12-07 16:31 ` Randolph Chung
2004-12-07 16:37 ` Joel Brobecker
2004-12-07 16:52 ` Randolph Chung [this message]
2004-12-08 1:51 ` Randolph Chung
2004-12-12 16:36 ` [commit] Move zero PC check to frame.c; Was: " Andrew Cagney
2004-12-03 18:22 ` Joel Brobecker
2004-12-06 4:15 ` Randolph Chung
2004-12-07 9:40 ` Joel Brobecker
2004-12-03 18:28 ` Andrew Cagney
2004-12-03 18:49 ` Joel Brobecker
2004-12-03 19:26 ` Andrew Cagney
2004-12-03 20:19 ` Joel Brobecker
2004-12-03 21:44 ` Andrew Cagney
2004-12-03 22:16 ` Joel Brobecker
2004-12-03 22:23 ` Daniel Jacobowitz
2004-12-03 22:25 ` Joel Brobecker
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