From owner-freebsd-current Thu Jul 31 05:29:57 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id FAA04266 for current-outgoing; Thu, 31 Jul 1997 05:29:57 -0700 (PDT) Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id FAA04253 for ; Thu, 31 Jul 1997 05:29:54 -0700 (PDT) Received: (from msmith@localhost) by genesis.atrad.adelaide.edu.au (8.8.5/8.7.3) id VAA28215; Thu, 31 Jul 1997 21:59:31 +0930 (CST) From: Michael Smith Message-Id: <199707311229.VAA28215@genesis.atrad.adelaide.edu.au> Subject: Re: core group topics In-Reply-To: <199707311142.EAA28471@implode.root.com> from David Greenman at "Jul 31, 97 04:42:32 am" To: dg@root.com Date: Thu, 31 Jul 1997 21:59:31 +0930 (CST) Cc: phk@dk.tfs.com, jkh@time.cdrom.com, chuckr@Glue.umd.edu, freebsd-current@freefall.FreeBSD.org X-Mailer: ELM [version 2.4ME+ PL28 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk David Greenman stands accused of saying: > There is? I don't recall discussing that at all, and if we do > eventually go the ELF way, I think the kernel would be one of the > last areas we'd want to convert since it further complicates our > cramped bootblocks. I've already volunteered to do much of the grunt work dealing with that if someone will help me over my x86 cluelessness in getting a third-stage bootstrap running. > The only issue I have against ELF is that I'm concerned that the overhead > for processing the much more sophisticated header at exec time might have a > serious impact on exec performance (something I'm particularly sensitive to > since I wrote the a.out exec code for FreeBSD). You raised this one last time, and forgive me if I asked the same question then too - could the exec parser be common-cased to deal with "typical" executables? For that matter, have you done any actual comparisons using the ELF parser currently in place? -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[