From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20406 invoked by alias); 8 Nov 2004 23:46:20 -0000 Mailing-List: contact binutils-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: binutils-owner@sources.redhat.com Received: (qmail 19522 invoked from network); 8 Nov 2004 23:45:45 -0000 Received: from unknown (HELO nevyn.them.org) (66.93.172.17) by sourceware.org with SMTP; 8 Nov 2004 23:45:45 -0000 Received: from drow by nevyn.them.org with local (Exim 4.34 #1 (Debian)) id 1CRJCT-0007UQ-PW; Mon, 08 Nov 2004 18:45:29 -0500 Date: Mon, 08 Nov 2004 23:46:00 -0000 From: Daniel Jacobowitz To: James E Wilson Cc: Mark Kettenis , echristo@redhat.com, seufer@csv.ica.uni-stuttgart.de, gdb@sources.redhat.com, gcc@gcc.gnu.org, binutils@sources.redhat.com Subject: Re: Mixing 32-bit and 64-bit DWARF2/3 sections Message-ID: <20041108234529.GA28651@nevyn.them.org> Mail-Followup-To: James E Wilson , Mark Kettenis , echristo@redhat.com, seufer@csv.ica.uni-stuttgart.de, gdb@sources.redhat.com, gcc@gcc.gnu.org, binutils@sources.redhat.com References: <200411071428.iA7ES7Fx003013@elgar.sibelius.xs4all.nl> <418FDD06.9030404@specifixinc.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <418FDD06.9030404@specifixinc.com> User-Agent: Mutt/1.5.5.1+cvs20040105i X-SW-Source: 2004-11/txt/msg00148.txt.bz2 On Mon, Nov 08, 2004 at 12:54:30PM -0800, James E Wilson wrote: > Unfortunately, the way that SGI extended DWARF2 caused problems, as it > resulted in ambiguous DWARF info, so the DWARF3 committee defined a > different way that is self descriptive. But since this happened after > Irix6 had already been released, and SGI could not break backwards > compatibility with Irix6, N64 still uses the non-standard 64-bit DWARF > format that SGI invented. And gcc uses this non-standard 64-bit DWARF > format for all mips64 targets, for consistency, and to conform with the ABI. This is not correct. % grep DWARF_INITIAL_LENGTH_SIZE * iris.h:#define DWARF_INITIAL_LENGTH_SIZE DWARF_OFFSET_SIZE % Only Irix 5 and Irix 6 use the SGI DWARF format. mips64-linux has been using the standard DWARF3 format for a long while. -- Daniel Jacobowitz