From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31773 invoked by alias); 2 Dec 2004 14:24:34 -0000 Mailing-List: contact gdb-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sources.redhat.com Received: (qmail 31195 invoked from network); 2 Dec 2004 14:24:18 -0000 Received: from unknown (HELO nevyn.them.org) (66.93.172.17) by sourceware.org with SMTP; 2 Dec 2004 14:24:18 -0000 Received: from drow by nevyn.them.org with local (Exim 4.34 #1 (Debian)) id 1CZrsK-0008Dt-Jg; Thu, 02 Dec 2004 09:24:04 -0500 Date: Thu, 02 Dec 2004 14:24:00 -0000 From: Daniel Jacobowitz To: Tarun Cc: gdb@sources.redhat.com, acmet@vsnl.net, "Ms.Ranjeeta" , "rm@acmet.com" Subject: Re: Query regarding assembly level debugging support Message-ID: <20041202142404.GB30595@nevyn.them.org> Mail-Followup-To: Tarun , gdb@sources.redhat.com, acmet@vsnl.net, "Ms.Ranjeeta" , "rm@acmet.com" References: <000e01c4d84f$dba18c30$a100a8c0@u8test4> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000e01c4d84f$dba18c30$a100a8c0@u8test4> User-Agent: Mutt/1.5.5.1+cvs20040105i X-SW-Source: 2004-12/txt/msg00015.txt.bz2 On Thu, Dec 02, 2004 at 02:48:15PM +0530, Tarun wrote: > Hi All, > > I am generating object file in Elf/Dwarf format. The prime target is > to be able to debug the assembly code. That is we are able to step > through the assembly code showing line numbers and relative addresses. > The Dwarf (version 2.0) sections currently being included are > - debug_line > - debug_abbrev > - debug_info. > > The linked out file is loaded without errors on GDB. When we run > the respective out file on GDB, the control of debugger moves to label > main in the assembly code ( Breakpoint 1, 0xa00200ec in main ()). When I > try to move to next instruction using "nexti", the control moves to next > address (Displaying: 0xa00200f0 in main ()). This continues till the > last address is reached. Only the address increments within the assembly > file are displayed and not the actual assembly source. > > When I try to single step using "step", the message prompted is > "Single stepping until exit from function main, which has no line number > information". Whereas if I disassemble one of the addresses give above, > entire assembly code which I am trying to debug is displayed. > > Does this mean that GDB does not support debugging of the assembly > code? Are you saying that your source code is assembly, and your assembler creates debug information for it? This should work in GDB; make sure that the .debug_line information is correct. -- Daniel Jacobowitz