Date: Mon, 18 Jan 2016 22:48:15 +0000 (UTC) From: Benjamin Kaduk <bjk@FreeBSD.org> 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 Message-ID: <201601182248.u0IMmGAj034600@repo.freebsd.org>
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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 @@ </task> </help> </project> + + <project cat='arch'> + <title>armv6 Hard Float Default ABI</title> + + <contact> + <person> + <name> + <given>Warner</given> + <common>Losh</common> + </name> + <email>imp@FreeBSD.org</email> + </person> + </contact> + + <links> + <url href="http://bsdimp.blogspot.com/2015/12/hard-float-api-coming-soon-by-default.html">Blog Entry</url> + </links> + + <body> + <p>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.</p> + + <p>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 <tt>rc</tt> system has been + enhanced to load the software float paths. <tt>ldconfig</tt> 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.</p> + + <p>The experimental armv6hf <tt>MACHINE_ARCH</tt> 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 <tt>WITH_LIBSOFT</tt> build option.</p> + </body> + + <help> + <task> + <p>Complete documentation needs to be written.</p> + </task> + + <task> + <p>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.</p> + </task> + + <task> + <p>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.</p> + </task> + </help> + </project> </report>
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