From owner-freebsd-mips@freebsd.org Fri Aug 19 04:14:23 2016 Return-Path: Delivered-To: freebsd-mips@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C22A4BBD274 for ; Fri, 19 Aug 2016 04:14:23 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: from mail-it0-x22b.google.com (mail-it0-x22b.google.com [IPv6:2607:f8b0:4001:c0b::22b]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 895A71F8F for ; Fri, 19 Aug 2016 04:14:23 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: by mail-it0-x22b.google.com with SMTP id f6so15525586ith.0 for ; Thu, 18 Aug 2016 21:14:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20150623.gappssmtp.com; s=20150623; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=m2xX0io8Ef0bX3W/z219xeb0C3mNmJbIRhL+wLzUUoA=; b=E95vCXechqBHAo8qfKp2yeND+b654VyNRt019Rpsp+EJFBujOmxS1c3cRpQljHgpwW U7d3hxbuYp5bEiGUR78GgIJgJnVI7Lwh9pAYRWbLgyPuorsjqnr1PzYxV5feuXCO068A xyTb7AzFjXzKSQFuH4gX7h+UVB2feGIu7cXQGIG0rI/X0+5g2f3gHkg/Sfn0VeS4TnBG +9auwrq9itK8yZsOBtp+9Dic274Yj72WFg5ab3kPw+eU4+wPUzb/vdG2D11dTzsqymeg Tk5ynOmRvPGxyTiLbPvyicBCfnAoDOGPq72QHX/9Anh5wZVAYWmMuJVVBb2jb+Iwx+8X SH8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=m2xX0io8Ef0bX3W/z219xeb0C3mNmJbIRhL+wLzUUoA=; b=CkJL3h0EO0tt83Gk0vejS9UUzIrdGfkvUIiI9L6N7MgXp64mvtwv0BzYbDrwJJFBUp VY8fBS1nlBySueHoovJH+ZfODyvfw4INJZeZwP3Xi3ZicnG7IBq3QIpSkOjLbo72m2l1 Tfgs++4Pw2xi85XiEAvjaziyi+BrP65vE5y+3nw6/A/koqaklSKNQ64bdzyCf8+i9max GPt4GSgFpkMtT0L1igsVwxB8dSu+zbRDyCXy8q8vmAFqMk42RaMuiYyTsTluYv9SUb+D KgJwNt+P1lM94GpmuFv6xOE2ycg3cSlqVFupPb9aKx9FVJfhAWFXD8j3O8S1M2PRKwqF vY9Q== X-Gm-Message-State: AEkoout9ZN43jsmEgunpAuVmdDGRyBxGJQ1WXt6B6kGwm02YLBloTzNXD2D8RPymUxAqEadGXcAkutB748TsQA== X-Received: by 10.36.17.20 with SMTP id 20mr461701itf.94.1471488090818; Wed, 17 Aug 2016 19:41:30 -0700 (PDT) MIME-Version: 1.0 Sender: wlosh@bsdimp.com Received: by 10.36.65.7 with HTTP; Wed, 17 Aug 2016 19:41:30 -0700 (PDT) X-Originating-IP: [69.53.245.200] In-Reply-To: References: From: Warner Losh Date: Wed, 17 Aug 2016 20:41:30 -0600 X-Google-Sender-Auth: SLXZqyp7avrcDtyw1FLwKxAp3E0 Message-ID: Subject: Re: kernel using gcc-5.3 fails to boot right To: Adrian Chadd Cc: "freebsd-mips@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-mips@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Porting FreeBSD to MIPS List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Aug 2016 04:14:23 -0000 On Wed, Aug 17, 2016 at 8:29 PM, Adrian Chadd wrote: > thanks to warner, I went looking at relocation tables. > > It stems from how we're doing LO16/HI16 - we expect HI first, then LO > - then we update where_hi16. This .. doesn't work in the new world. > > eg: > > 0000bf9c R_MIPS_HI16 ctl3_lock > 0000bfa0 R_MIPS_LO16 ctl3_lock > 0000bfa8 R_MIPS_HI16 M_IPFW > 0000bfac R_MIPS_LO16 M_IPFW > 0000bfb8 R_MIPS_LO16 .bss > 0000bfa4 R_MIPS_HI16 __mtx_unlock_flags > 0000bfcc R_MIPS_LO16 __mtx_unlock_flags A grep suggests we implement them for efl_machdep.c: sys/mips/mips/elf_machdep.c: case R_MIPS_HI16: /* ((AHL + S) - ((short)(AHL + S)) >> 16 */ sys/mips/mips/elf_machdep.c: case R_MIPS_LO16: /* AHL + S */ Might see if you can debug fro there. Warner