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From: Andreas Schwab <schwab@suse.de>
To: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: gdb@sourceware.org
Subject: Re: How to avoid stepping inside libpthread
References: <20070711.151820.55513191.nemoto@toshiba-tops.co.jp>
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Date: Wed, 11 Jul 2007 09:00:00 -0000
In-Reply-To: <20070711.151820.55513191.nemoto@toshiba-tops.co.jp> (Atsushi 	Nemoto's message of "Wed\, 11 Jul 2007 15\:18\:20 +0900 \(JST\)")
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Atsushi Nemoto <anemo@mba.ocn.ne.jp> writes:

> There is a LL/SC loop (atomic_decrement_and_test(&__nptl_nthreads))
> after the 0x2ab0ae88 in start_thread(), so it is not wonder the single
> stepping never ends (SC always fail due to a breakpoint exception).
>
>
> Are there any way to avoid falling into such situations?

See deal_with_atomic_sequence in rs6000-tdep.c, which tries to solve the
same issue.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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