From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9208 invoked by alias); 9 Apr 2009 20:36:47 -0000 Received: (qmail 9175 invoked by uid 22791); 9 Apr 2009 20:36:46 -0000 X-SWARE-Spam-Status: No, hits=-2.0 required=5.0 tests=AWL,BAYES_00,SARE_MSGID_LONG40,SPF_PASS X-Spam-Check-By: sourceware.org Received: from rv-out-0708.google.com (HELO rv-out-0708.google.com) (209.85.198.243) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 09 Apr 2009 20:36:41 +0000 Received: by rv-out-0708.google.com with SMTP id l33so644753rvb.48 for ; Thu, 09 Apr 2009 13:36:40 -0700 (PDT) MIME-Version: 1.0 Received: by 10.141.115.6 with SMTP id s6mr1183229rvm.260.1239309400145; Thu, 09 Apr 2009 13:36:40 -0700 (PDT) In-Reply-To: <49DE599B.8070702@vmware.com> References: <49DE4219.9020606@vmware.com> <49DE599B.8070702@vmware.com> Date: Thu, 09 Apr 2009 20:50:00 -0000 Message-ID: Subject: Re: Kernel symbol table From: Shrinand Javadekar To: Michael Snyder Cc: "gdb@sourceware.org" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable 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: 2009-04/txt/msg00096.txt.bz2 Hi Michael, If these are not loaded how can other (maybe even user written) modules link to them? For. e.g. I could write a simple driver which calls sys_open to open a file. When the module is built/loaded, how does the linker/loader know the address of sys_open? -Shri On Thu, Apr 9, 2009 at 1:24 PM, Michael Snyder wrote: > Shrinand Javadekar wrote: >> >> Hi Michael, >> >> Thanks for the reply. However, there are a couple of problems with >> looking at vmlinux. >> >> 1. When I haven't built the kernel myself, I don't have the vmlinux file. >> 2. When I am remotely connected to a machine, I don't really have the >> vmlinux file with me. >> >> Hence, rather that getting the info statically from file, it would be >> great to read it directly from the memory of the target. > > Not possible, afaik. =C2=A0The symbol sections of the vmlinu[x|z] file > are explicitly NOT loaded into memory. > > Or were you thinking about some sort of /proc-like mechanism? >