The Linaro Toolchain Working Group is pleased to announce the release
of Linaro QEMU 2011.09.
Linaro QEMU 2011.09 is the latest monthly release of
qemu-linaro. Based off upstream (trunk) QEMU, it includes a
number of ARM-focused bug fixes and enhancements.
New in this month's release:
- linux-user mode now supports the 64 bit cmpxchg kernel helpers
(only needed for applications compiled for ARMv6 or lower)
- PL111 display controller now supported; this fixes a problem
where BGR was interpreted as RGB on recent versatilepb kernels
Plus a few other minor bug fixes and the usual round of upstream
fixes and improvements.
Known issues:
- The beagle and beaglexm models still do not support USB networking;
we intend to fix this for the 2011.10 release
- There may be some problems with running multithreaded programs in
linux-user mode (LP:823902)
The source tarball is available at:
https://launchpad.net/qemu-linaro/+milestone/2011.09
Binary builds of this qemu-linaro release are being prepared and
will be available shortly for users of Ubuntu. Packages will be in
the linaro-maintainers tools ppa:
https://launchpad.net/~linaro-maintainers/+archive/tools/
More information on Linaro QEMU is available at:
https://launchpad.net/qemu-linaro
The Linaro Toolchain Working Group is pleased to announce the release
of Linaro GDB 7.3.
Linaro GDB 7.3 2011.09 is the second release in the 7.3 series. Based
off the latest GDB 7.3, it includes a number of ARM-focused bug fixes
and enhancements.
This release contains:
* Support for hardware breakpoints and watchpoints in gdbserver
The source tarball is available at:
https://launchpad.net/gdb-linaro/+milestone/7.3-2011.09
More information on Linaro GDB is available at:
https://launchpad.net/gdb-linaro
Hi there. The 2011.09 release has been spun and is testing up well.
The 4.5 and 4.6 branches are now open so feel free to commit any
approved patches.
-- Michael
Hi!
When building Android with the Linaro toolchain, I encountered this link
time error when going from gcc 4.4.3 to gcc 4.6.
"arm-eabi-g++: error: unrecognized option '-avoid-version'"
I find several posts about people encountering the same thing for different
programs.
Was this option removed? Anyone know the story behind it?
Regards
Åsa
Release Management needs the list of the the blueprints that will be
delivered this month.
For each bp, they want a Headline and Acceptance criteria. The Headline is a
statement to include in the Monthly release announcement. The acceptance
criteria is a statement how to verify the work is done.
I have collected this month's blueprints in the spreadsheet, please review
it for accuracy. If a blueprint you are working on is missing, please add
it.
The Headline and Acceptance can be added into the whiteboard as follows:
Headline:
headline text
Acceptance:
acceptance text
Once you add the the headline and acceptance, please modify the spreadsheet
to reflect that it is done.
https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AoZqvK7R1biJdGxSc…
Thanks in advance,
Mounir
--
Mounir Bsaibes
Project Manager
Follow Linaro.org:
facebook.com/pages/Linaro/155974581091106http://twitter.com/#!/linaroorghttp://www.linaro.org/linaro-blog <http://www.linaro.org/linaro-blog>
==GCC==
===Progress===
* Fixed https://bugs.launchpad.net/ubuntu/+source/gcc-4.6/+bug/838994
. Investigated Bernd's alternate patch . Will commit mine.
* Looked at PR48308 for sometime whihc might be a dup of PR50313 .
* Some blueprint foo.
* Committed a few of the outstanding approved patches into Linaro GCC-4.6
* Patch review week
* Caught up with email after vacation.
=== Plans ===
* Commit conditional compares patch.
* Commit the patch for LP838994.
* Investigate some of the performance issues with strlen and some of
the cases with - one of the ideas is to probably try and get the
specific testcases run under u-boot or as a bare-metal binary and look
at dumps of various performance monitoring counters and see what's
happening.
* Look at BRANCH_COST and finish that up next.
* Dust off patch for PR19599 . One of them them that has fallen into the cracks.
* Some patch review.
Meetings:
* 1-1s
* TCWG calls
* Thumb2 performance call.
Absences.
* 16th Oct (pm) - LLVM developer summit - London
* 31st Oct - 4th Nov - Linaro Summit Orlando - Travel booked - hotel
to be booked.
* 08 Nov - 11 Nov - Tentatively booked not approved.
* Dec 19 - 31st Dec - Tentatively booked not approved.
Merged both GCC 4.5 and 4.6 from FSF to Linaro. Matthias requested that
I avoid a particular upstream 4.6 commit, so I selected the revision
before that as the merge point. The problem was then fixes upstream, and
another fix was desirable, so I've redone the merge from the branch head.
Another widening-multiplies bug was reported to me (I logged it as
pr50318/lp843775), so I've fixed that and committed the fix upstream,
and filed a merge request on Launchpad.
Finished fixing the bugs in my thumb2 constants optimizations, and
backported the new patches to Linaro GCC 4.6. Pushed the updated stuff
to Launchpad for testing.
Richard Sandiford found a flaw in my patch for pr50193/lp836401, so I've
done another version of that and posted it upstream. Ramana didn't like
that version. I've started again trying to fix it a different way, but I
don't have it working just yet.
Continued work on my new constant reuse patch. I have it detecting many
constant expressions, and calculating the values for some of them. Once
it does that sufficiently well, the next step is to track what constants
are available where, I then I'll be in a position to find optimization
opportunities. At the moment, 'sufficiently well' could just mean
MOVW/MOVT pairs, as those are the most common
Tried to get the CS Panda Boards up and running again after the move. No
success. Ricardo is on the case. I'm still using the boards located at
Canonical.
Andrew
Continue looking at Richard's micro benchmarks taken from libav w.r.t
SMS and experiment with different patches that Richard wrote to
improve code generation.
Submitted SMS related patch for minor misc fixes
http://gcc.gnu.org/ml/gcc-patches/2011-09/msg00551.html
Trying to understand why to new version of the patch to support
instructions with
REG_INC_NOTE in SMS causes bootstrap failure. Will email to the ml regarding it.
(http://gcc.gnu.org/ml/gcc-patches/2011-08/msg01216.html)
* Looked at LP bug 736661. Sent a patch upstream. Some positive feedback,
but it hasn't been approved or rejected yet.
* Looked at the old R_ARM_THM_CALL linker bug, after Matthias prepared
a self-contained testcase (thanks). Attached a patch to the bug.
Will submit upstream next week if testing goes OK.
* Looked at why the backport of lp823708-4.5 retriggered the same
bootstrap failure that Chung-Lin's patch did. Haven't been able
to reproduce yet.
* Looked at making the neon_vget_high/low patterns use ordinary
subreg moves. Found that this triggered a fair few latent bugs
in the rtl optimisers. Tried to fix those. This gave some nice
improvements in some of the libav loops.
* Added h264 loops to the libav microbenchmarks.
* Blueprints.
* Upstream patch review.
Richard
* Completed First-time wiki page, at least for now. Expecting to add more
information as I go.
* Running SPEC2K on the Snowball board. The tests are failing because I run
out out of memory. This is due to too little RAM available in the default
kernel configuration. (Official HW pack.) I had a go with creating a swap
file on the SD-card. The tests are then running, but results are slow (which
makes sense). Will try to make more memory available with changed
uboot-option, or with a fresh kernel.
* Discussing with Michael about benchmark candidates that will add a web
browsing perspective to the benchmarks we have. I suggest Sunspider and V8
benchmark suite for the JavaScript aspect, and EEMBC Browsing Bench and
perhaps ARMBBench for the load and render aspect. As for the imaging aspect
we have DENBench and ConsumerBench.
Best Regards
Åsa
