From owner-freebsd-arm@freebsd.org Thu Feb 16 17:42:14 2017 Return-Path: Delivered-To: freebsd-arm@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 E6236CE2081 for ; Thu, 16 Feb 2017 17:42:14 +0000 (UTC) (envelope-from fuz@fuz.su) Received: from fuz.su (fuz.su [IPv6:2001:41d0:8:e508::1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id BA9C412F2 for ; Thu, 16 Feb 2017 17:42:14 +0000 (UTC) (envelope-from fuz@fuz.su) Received: by fuz.su (Postfix, from userid 1000) id 79DD120156; Thu, 16 Feb 2017 18:42:13 +0100 (CET) Date: Thu, 16 Feb 2017 18:42:13 +0100 From: fuz@fuz.su To: freebsd-arm@freebsd.org Subject: lib32 support for ARM64 Message-ID: <20170216174213.GA26791@fuz.su> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Feb 2017 17:42:15 -0000 Hello! I have recently started to use FreeBSD on my Raspberry Pi 3, when I noticed that there is no lib32 support, i.e. you cannot run 32 bit ARM binaries. As I am currently a student with a lot of time to kill during the summer, I am thinking about implementing this. I would like to know: * what needs to be ported/adapted to get lib32 support working? * has there been any existing work in this direction? * is there interest in implementing this feature? * if yes, would this feature be suitable for a gsoc project? I have no experience in working on the FreeBSD kernel except for a one-line patch I wrote to get an LPT port card running. I have (for a student) very good knowledge of programming in C. I know how to read and write assembly code. I have a reasonable idea of how the FreeBSD kernel is structured. Yours, Robert Clausecker -- () ascii ribbon campaign - for an 8-bit clean world /\ - against html email - against proprietary attachments