From owner-svn-doc-all@freebsd.org Mon Jan 18 22:48:17 2016 Return-Path: Delivered-To: svn-doc-all@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 37F49A86E5A; Mon, 18 Jan 2016 22:48:17 +0000 (UTC) (envelope-from bjk@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (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 EF734161F; Mon, 18 Jan 2016 22:48:16 +0000 (UTC) (envelope-from bjk@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u0IMmGec034601; Mon, 18 Jan 2016 22:48:16 GMT (envelope-from bjk@FreeBSD.org) Received: (from bjk@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u0IMmGAj034600; Mon, 18 Jan 2016 22:48:16 GMT (envelope-from bjk@FreeBSD.org) Message-Id: <201601182248.u0IMmGAj034600@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: bjk set sender to bjk@FreeBSD.org using -f From: Benjamin Kaduk Date: Mon, 18 Jan 2016 22:48:15 +0000 (UTC) To: doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org Subject: svn commit: r48059 - head/en_US.ISO8859-1/htdocs/news/status X-SVN-Group: doc-head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-doc-all@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "SVN commit messages for the entire doc trees \(except for " user" , " projects" , and " translations" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Jan 2016 22:48:17 -0000 Author: bjk Date: Mon Jan 18 22:48:15 2016 New Revision: 48059 URL: https://svnweb.freebsd.org/changeset/doc/48059 Log: Add armv6 hardfloat entry from imp Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml ============================================================================== --- head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml Mon Jan 18 22:35:01 2016 (r48058) +++ head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml Mon Jan 18 22:48:15 2016 (r48059) @@ -3937,4 +3937,71 @@ + + + armv6 Hard Float Default ABI + + + + + Warner + Losh + + imp@FreeBSD.org + + + + + Blog Entry + + + +

Work on moving armv6 from a "soft float" ABI (but + still using hardware floating point) to a fully "hardware + float" API moves forward. The ability to have both soft and + hard ABI libraries on the same system is now functional. All + armv6 and armv7 systems we support have hardware floating point + capabilities. We currently use the floating-point hardware, but + with a slightly un-optimal ABI, for compatibility with older + versions of &os;. The ABI differences are only at the userspace + level — the kernel does not care what floating-point ABI is + used, and both types of binaries can run at the same time.

+ +

The run-time linker now knows if a binary uses the hardware + float ABI or the software float ABI by examining some fields in + the ELF header. The linker uses different paths and config files + for hard vs. soft binaries. The rc system has been + enhanced to load the software float paths. ldconfig now + understands soft libraries in much the same way that it + understands 32-bit libraries on 64-bit systems. No additional + kernel support was necessary for this, apart from a minor patch to + pass the ELF header information to the binary, which has been in + the tree since last summer.

+ +

The experimental armv6hf MACHINE_ARCH will be + retired after a transition period. It will cease to mean anything + different from armv6 after the build system changes go in. + Support for building soft-float ABI libraries will remain in the + tree, to support the WITH_LIBSOFT build option.

+ + + + +

Complete documentation needs to be written.

+ + + +

Hooks into the &os; build system to generate soft float and + transition to hard float after a flag day need to be polished + up and committed.

+ + + +

A number of different upgrade/coexistence scenarios need + to be tested, and a full package run needs to be done to assess + the latest state of the ports tree. This work should be completed + by the end of January.

+ + +