From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1064 invoked by alias); 1 Jun 2012 14:56:23 -0000 Received: (qmail 999 invoked by uid 22791); 1 Jun 2012 14:56:16 -0000 X-SWARE-Spam-Status: No, hits=-7.5 required=5.0 tests=AWL,BAYES_00,KHOP_RCVD_UNTRUST,KHOP_THREADED,RCVD_IN_DNSWL_HI,RCVD_IN_HOSTKARMA_W,SPF_HELO_PASS,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 01 Jun 2012 14:55:51 +0000 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q51Etoj5012679 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 1 Jun 2012 10:55:50 -0400 Received: from [127.0.0.1] (ovpn01.gateway.prod.ext.ams2.redhat.com [10.39.146.11]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id q51EtnE3002801; Fri, 1 Jun 2012 10:55:49 -0400 Message-ID: <4FC8D7F4.9000102@redhat.com> Date: Fri, 01 Jun 2012 14:56:00 -0000 From: Pedro Alves User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 MIME-Version: 1.0 To: Joakim Tjernlund CC: gdb-patches@sourceware.org Subject: Re: [PATCH] remote: Avoid unwanted shlib internal BPs When debugging Linux kernel or u-boot with Abatron BDI emulator an error occurs: References: <1338557804-20910-1-git-send-email-Joakim.Tjernlund@transmode.se> <4FC8CCD7.9060800@redhat.com> <4FC8D466.2020203@redhat.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org X-SW-Source: 2012-06/txt/msg00018.txt.bz2 On 06/01/2012 03:53 PM, Joakim Tjernlund wrote: > Pedro Alves wrote on 2012/06/01 16:40:38: >> >> On 06/01/2012 03:38 PM, Joakim Tjernlund wrote: >> >>>> GDB has no special knowledge of the Linux kernel, nor of u-boot. >>>>> A GNU/Linux targeted GDB (*-*-linux-gnu) recognizes, and knows how to >>>>> debug user space applications. If the kernel binary or the u-boot binary >>>>> look very much like GNU/Linux user space programs, the *-*-linux-gnu targeted >>>>> GDB will assume that's what they are. If you used a bare metal elf/eabi >>>>> targeted GDB, which is really what those programs are, you'd not see this. >>> >> >>> >>> Yes you would, the error comes from this in solibsvr4.c: >> >>> static const char * const bkpt_names[] = >>> { >>> "_start", >>> "__start", >>> "main", >>> NULL >>> }; >> >> >> No you wouldn't, because solib-svr4 is not used (or even compiled in) >> on a bare metal targeted GDB. > > One suggesting I got is to wrap this last test with > if (interp_name) /* Check if there is a ld.so at all */ > if (!current_inferior ()->attach_flag) > ... > } > > What do you think about that? That makes sense. -- Pedro Alves