From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 27961 invoked by alias); 24 Oct 2007 20:42:32 -0000 Received: (qmail 27950 invoked by uid 22791); 24 Oct 2007 20:42:31 -0000 X-Spam-Check-By: sourceware.org Received: from waste.org (HELO waste.org) (66.93.16.53) by sourceware.org (qpsmtpd/0.31) with ESMTP; Wed, 24 Oct 2007 20:42:29 +0000 Received: from waste.org (localhost [127.0.0.1]) by waste.org (8.13.8/8.13.8/Debian-3) with ESMTP id l9OKgH5v021132 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 24 Oct 2007 15:42:17 -0500 Received: (from oxymoron@localhost) by waste.org (8.13.8/8.13.8/Submit) id l9OKgGce021131; Wed, 24 Oct 2007 15:42:16 -0500 Date: Wed, 24 Oct 2007 20:42:00 -0000 From: Matt Mackall To: Grant Likely Cc: linuxppc-embedded@ozlabs.org, gdb@sourceware.org Subject: Re: Apparent kernel bug with GDB on ppc405 Message-ID: <20071024204215.GC19691@waste.org> References: <20071024194640.GB19691@waste.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.13 (2006-08-11) X-IsSubscribed: yes Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2007-10/txt/msg00209.txt.bz2 On Wed, Oct 24, 2007 at 02:28:14PM -0600, Grant Likely wrote: > On 10/24/07, Matt Mackall wrote: > > I'm trying to debug a trivial statically-linked hello world program on > > a Xilinx PPC 405 and I'm seeing the following behavior: > > > > > > > Any suggestions? > > http://thread.gmane.org/gmane.linux.ports.ppc.embedded/11202 > > I was fighting with a similar problem almost 2 years ago. Looks like > it might be related. At some point the problem seemed to go away and > I determined what the root cause was. :-( > > I haven't been using gdb lately, so I don't know if it's the same > problem. Nobody I had talked to had seen the issue on other 405 > platforms. It could very well be something virtex-specific. Could be the same problem, but I'm seeing only your symptom 3 so far. I've tried throwing some larger hammers at the problem. Flushing all of the dcache and icache (flush_dcache_all and flush_instruction_cache) isn't helping. But printk(".") does! -- Mathematics is the supreme nostalgia of our time.