From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26830 invoked by alias); 5 Mar 2010 22:51:37 -0000 Received: (qmail 26808 invoked by uid 22791); 5 Mar 2010 22:51:35 -0000 X-SWARE-Spam-Status: No, hits=-0.6 required=5.0 tests=AWL,BAYES_00,DNS_FROM_RFC_BOGUSMX X-Spam-Check-By: sourceware.org Received: from sebabeach.org (HELO sebabeach.org) (64.165.110.50) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 05 Mar 2010 22:51:31 +0000 Received: from dhcp-172-19-110-107.mtv.corp.google.com (localhost.localdomain [127.0.0.1]) by sebabeach.org (Postfix) with ESMTP id C8C076E3D4; Fri, 5 Mar 2010 14:51:29 -0800 (PST) Message-ID: <4B918AF1.6010500@sebabeach.org> Date: Fri, 05 Mar 2010 22:51:00 -0000 From: Doug Evans User-Agent: Thunderbird 2.0.0.23 (Macintosh/20090812) MIME-Version: 1.0 To: Dmitry Eremin-Solenikov CC: cgen@sources.redhat.com Subject: Re: cgen -> opcodes problem References: <20091227081006.GA23270@doriath.ww600.siemens.net> <4B39014D.4000203@sebabeach.org> <4B85589C.1030508@sebabeach.org> <4B918265.3060604@sebabeach.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact cgen-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cgen-owner@sourceware.org X-SW-Source: 2010-q1/txt/msg00021.txt.bz2 Dmitry Eremin-Solenikov wrote: > On Sat, Mar 6, 2010 at 1:15 AM, Doug Evans wrote: > >> Dmitry Eremin-Solenikov wrote: >> >>> On Wed, Feb 24, 2010 at 7:49 PM, Doug Evans wrote: >>> >>> >>>> Dmitry Eremin-Solenikov wrote: >>>> >>>> >>>>> Hello all, >>>>> >>>>> Trying to continue this topic after a while. >>>>> >>>>> Doug Evans wrote: >>>>> >>>>> >>>>> >>>>> >>>>>> Dmitry Eremin-Solenikov wrote: >>>>>> >>>>>> >>>>>> >>>>>>> Hello all, >>>>>>> >>>>>>> I'm back to my m68hc08 binutils port done via cgen. Recently I've >>>>>>> again >>>>>>> stumbled upon a problem with instructions, whose base? length != ISA >>>>>>> base length. >>>>>>> >>>>>>> E.g. in the attached stripped test case, the 'ttt' instruction either >>>>>>> (should be assembled as 0x9E 0xF1) is misencoded as 0xsmth 0x00. Is >>>>>>> this my fault? Or is this the expected behaviour and I should define >>>>>>> f-seccode in some other way? >>>>>>> >>>>>>> Could you please help me? >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> Hi. cgen currently doesn't handle instructions with opcode bits beyond >>>>>> the base insn size very well. I have a sandbox with this fixed, but >>>>>> it'll be awhile (month or more?) before it all gets checked in. >>>>>> >>>>>> >>>>>> >>>>> What is the current status of your sandbox? Do you have any patches >>>>> available? >>>>> Or any intermediate work? Can I/we do something to help you to clean >>>>> this >>>>> up? >>>>> >>>>> I'm currently trying to dig into ifmt-mask stuff, but it takes time... >>>>> >>>>> >>>>> >>>>> >>>>>> In the meantime, setting base-insn-bitsize to 16 may work. [It >>>>>> *should* >>>>>> work, but there may be attributes of your port I haven't taken into >>>>>> account.] >>>>>> >>>>>> >>>>>> >>>>> Setting base-insn-bitsize to 16 break disassembler: it starts looking >>>>> for >>>>> 16-bit masks instead of 8-bit for each and every instruction, and this >>>>> doesn't >>>>> seem to work for lsb0 = #f port. >>>>> >>>>> >>>>> >>>>> >>>> Hi. It's very slow going, mostly because this isn't my day job. Sigh. >>>> >>>> It's easier to work with specific bugs though. Can you send me your port >>>> to >>>> try? Complete sources for building binutils would be best (either as a >>>> collection of patches or as a tarball I can ftp or some such). >>>> >>>> >>> The port is maintained as a git tree at >>> >>> git://m68hc08-utils.git.sourceforge.net/gitroot/m68hc08-utils/m68hc08-utils >>> >>> You can browse code at >>> >>> http://m68hc08-utils.git.sourceforge.net/git/gitweb.cgi?p=m68hc08-utils/m68hc08-utils;a=summary >>> >>> If you'd prefer I can create a simple (2-3 insns) cut of the port, >>> demonstrating the problem. >>> >>> >>> >> Hi. >> I've got a toolchain built and can run the gas testsuite. >> Are these failures expected? >> [just want to establish a baseline] >> >> Running /misc/dje/gnu/m68hc08/myrepo/gas/testsuite/gas/m68k/all.exp ... >> > > Hmmm. m68hc08 isn't an m68k-family device. > > Thanks. I'll just ignore all of them then.