From owner-svn-src-head@freebsd.org Sun Mar 19 00:30:20 2017 Return-Path: Delivered-To: svn-src-head@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 4A512D08620; Sun, 19 Mar 2017 00:30:20 +0000 (UTC) (envelope-from carpeddiem@gmail.com) Received: from mail-it0-x233.google.com (mail-it0-x233.google.com [IPv6:2607:f8b0:4001:c0b::233]) (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 143231363; Sun, 19 Mar 2017 00:30:20 +0000 (UTC) (envelope-from carpeddiem@gmail.com) Received: by mail-it0-x233.google.com with SMTP id g138so63004516itb.0; Sat, 18 Mar 2017 17:30:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=EBxuRNJNbUigFwudBls3RFkMXK/KQTgvmxCXolKEXoY=; b=LdxVN8UKUShM20Oi4U0GdwLgOi000Ht0coJSlfJ5z/E557XoXZTv7Rq+hdVE3OKBYz l51sW9mjMN8vrmgL8zB+VTLwkwx72s4XB78nSJrB7KfKLZRgm4YF9cMH1MqiLHq647ib rExJByeHX7RlCEtHpRcN6VKUV9hBxX5oHZNOmocH+X4LHVj8mYZPv/d7NUMejvaTtvkK 1OCNFgI6SWHJgxxoPw1s6DKDtl9oL5EkQ1O2huoLm5OGxbMvmURbkmzz8X4l/RPPAkpk pDiqEGsLLVWlk0DfJ+t8f0C3yNp29m7qvQOUoTUovaGwE6ls1xo5lR25xo/TsLI1OaIk Qjhw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=EBxuRNJNbUigFwudBls3RFkMXK/KQTgvmxCXolKEXoY=; b=qIpfN9j0SGXtI18CKnOVDL1tWEDwGMzMNntNl8f+b+30+gpi1aW5oO/JzmLOH+6GD1 lqVkhGhV0hNZ0aQzkz9PSALLcZeLqZ3w62LqMsKcqNHsO97mejHaD45Vgegda0HEcEEY an4JqLAKJWQH7wU1ydjcTHTBwQUyptH065nAPLCiK83k4uG4TpDhRQY05cIiZznHh1oW U+8MgdgvjISn8zAQVR9q/+DbMxtbIw59V3uOjm/szCfk15tfPz/JMR3qtZQnthIZHq5/ Br0ErB0kDzVZLGMFpuPJCMcUOyP23XfNmncczelB6d0dFUl9D7Vgjk4V1jqP7iONDpwI nhjw== X-Gm-Message-State: AFeK/H2NfywqhzL5ajln9l7Z0jOyfrJKF3I4N/jHsdNLcZkroEWHvHHRTyLZeLyjE81owAnRExyu5YDQi2JtBw== X-Received: by 10.36.80.213 with SMTP id m204mr4137580itb.105.1489883418930; Sat, 18 Mar 2017 17:30:18 -0700 (PDT) MIME-Version: 1.0 Sender: carpeddiem@gmail.com Received: by 10.107.30.209 with HTTP; Sat, 18 Mar 2017 17:29:58 -0700 (PDT) In-Reply-To: <1489883150.40576.222.camel@freebsd.org> References: <201703190022.v2J0MDhq015941@repo.freebsd.org> <1489883150.40576.222.camel@freebsd.org> From: Ed Maste Date: Sat, 18 Mar 2017 20:29:58 -0400 X-Google-Sender-Auth: HY4lzZGDY3tVYkPMN8qTmv0B4Wc Message-ID: Subject: Re: svn commit: r315522 - in head: contrib/binutils/ld/emulparams sys/conf To: Ian Lepore Cc: "src-committers@freebsd.org" , "svn-src-all@freebsd.org" , "svn-src-head@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 19 Mar 2017 00:30:20 -0000 On 18 March 2017 at 20:25, Ian Lepore wrote: > > I have always wondered why the arm ldscript pads with 0x90. I don't > know if I feel any better now, knowing that it's because that's an x86 > nop instruction. :) Heh! We used to pad the amd64, i386, and arm64 EFI loaders with 0x00300000010070000002000001000400, which is some ia64 instruction sequence :-) The arm padding ought to be switched to a breakpoint instruction or some other trap or guaranteed illegal instruction.