Date: Fri, 19 Feb 2010 15:38:25 +0100 From: Bernd Walter <ticso@cicely7.cicely.de> To: Mark Tinguely <tinguely@casselton.net> Cc: gjb@semihalf.com, current@freebsd.org, ticso@cicely7.cicely.de, kostikbel@gmail.com, arm@freebsd.org, ticso@cicely.de Subject: Re: bind fails with sig11 on start / pthread failure on ARM? Message-ID: <20100219143824.GI43625@cicely7.cicely.de> In-Reply-To: <201002191413.o1JEDFpF018272@casselton.net> References: <4B7E840F.2040709@semihalf.com> <201002191413.o1JEDFpF018272@casselton.net>
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On Fri, Feb 19, 2010 at 08:13:15AM -0600, Mark Tinguely wrote:
> >
> > Some time ago we changed an address of RAS. Probably that's the problem. Please try
> > with patch below.
> >
> > grzesiek
>
> Good job.
>
> IMO, ARM atomic.h should have cmpxchg and the other standard atomic routines
> so applications don't roll their own and they become stale.
You can see an explanation in svn log:
r174206 | dougb | 2007-12-03 09:26:34 +0100 (Mon, 03 Dec 2007) | 10 lines
Update this file so that BIND on ARM can actually work. I quote:
The problem was, isc_atomic_cmpxchg() is almost like our
atomic_cmpset_32(), except it expects the old value to be
returned, whereas our atomic_cmpset_32 returns 1 on success,
or 0 on failure. So I re-implemented something suitable.
Submitted by: cognet
Reviewed by: bsdimp
------------------------------------------------------------------------
r170349 | dougb | 2007-06-06 00:15:38 +0200 (Wed, 06 Jun 2007) | 5 lines
Add a custom atomic.h file which implements the C versions of the
code we already have assembly versions of.
Written by: imp
> This will help application writers if we move the atomic commands from the
> ARMv4/ARMv5 ARM_RAS_START/ARM_RAS_END atomic method to ARMv6/ARMv7
> ldrex/strex/clrex commands.
--
B.Walter <bernd@bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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