### About Linaro eglibc
Linaro eglibc is a release of the eglibc C library with bug fixes and
enhancements for ARM platforms. eglibc is a variant of the GNU libc
designed to work well on embedded systems.
### Linaro eglibc 2.18 2013.10
The Linaro Toolchain Working Group is pleased to announce the 2013.10
release of Linaro eglibc 2.18, the second release in the 2.18 series.
This release is based on the latest upstream eglibc 2.18 stable branch,
but with additional features and bug fixes.
#### Additional Features
* AArch64 profiling support
* Optimized strlen for ARMv6T2
* Small enhancement to memcpy performance
* ARM pointer encryption support
#### Bug Fixes
* Fix for integer overflows in memalign/pvalloc/valloc
### Source
#### Release Tarball
* https://releases.linaro.org/13.10/components/toolchain/eglibc-linaro
#### Development Tree
* git://git.linaro.org/toolchain/eglibc.git
This release was built from the `linaro_eglibc-2_18-2013_10_release` tag.
### Feedback and Support
Subscribe to the important Linaro mailing lists and join our IRC channels to
stay on top of Linaro development.
* Linaro Toolchain Development [mailing
list](http://lists.linaro.org/mailman/listinfo/linaro-toolchain)
* Linaro Toolchain IRC channel on irc.freenode.net at `#linaro-tcwg`
* Questions? [ask Linaro](http://ask.linaro.org/).
* Interested in commercial support? inquire at [Linaro
support](mailto:support@linaro.org)
--
Will Newton
Toolchain Working Group, Linaro
== Issue ==
* AArch64 frame grows downward: no feedback yet.
== Progress ==
* Disable-peeling: Vectorizer cost model has been changed upstream,
quick look at benchmark results show little difference between before
and after the change. Need to analyze further, since I expected the
regressions previously identified with my patch to appear here too.
* AArch64 bootstrap failure: succesfully bootstrapped in the model.
* GCC trunk validation:
- improved configurability (default cpu, fpu, mode, testsuite flags
are selectable)
- requested feedback to build the list of desirable combinations to validate
* Backports/release 2013.10
- a few more backports completed
- re-trying to backport the ILP32 and refactoring series proves
again to be tricky, but helped identify backports which had escaped
from the list.
- cbuild has disk full again
* GCC Neon intrinsics testsuite:
-- posted a proposition to add my executable tests to the existing
framework. No feedback yet.
== Next ==
* Make 2013.10 releases, both with the historical process and using
cbuildv2, in parallel
* Disable-peeling/new vectorizer cost model: analyze bench results
== Progress ==
* Got cbuildv2 google group setup.
(https://groups.google.com/a/linaro.org/forum/#!forum/cbuildv2)
* Got email notifications working for commits to cbuildv2 repository.
* Continued work on release building via Cbuildv2. Source tarballs
checked out OK, binaries too. Probably a few tweaks left to cover
the minor differences, which are all documentation files.
- Rebuild GCC dynamically so the shared libraries for libgcc and
libstdc++ can go in the runtime binary tarball.
- Build runtime binary tarball.
- Added install script to sysroot tarball.
- Make overriding the default release tag with a user supplied
one work fully.
* Got Odroid U2 board working again, did complete native build
using cbuildv2.
* Reviewed more cbuild2 patches from Ryan.
* Got Jenkins building snapshot tarballs.
== Plan ==
* Do slides for Connect presentation.
* Work on duplicating the 2013.10 release via cbuildv2.
* Get Odroid X2 board to boot, which it currently refuses to do.
* Try to work around problem with importing test results.
* Copy tarballs to snapshots.linaro.org.
== Progress ==
* 4 Day week (October 7th Public Holiday)
* 64bit division
- Looked at libgcc division implementations
- Implemented in C "Align divisor shift dividend method" for
procssors without div instrusttion
- gcc regression now pass with above
* spec2k comparison between ARM and x86
- Continue working on slides for connect
- ran benchmarks to gather required results
== Plan ==
* Continue with spec2k comparison between ARM and x86
* Continye with 64bit division
== Progress ==
(TCWG-266), (TCWG-270), (TCWG-250), (TCWG-280) and (TCWG-288)
* Added arm process record syscall support changes and some bug fixes.
* More improvement to gdb.reverse on arm now 2214 tests are passing in
native mode (144 failures left)
(TCWG-267), (TCWG-268) and (TCWG-269)
* No progress this week.
* Received US visa from US visa passport collection center.
* Booked travel for LCU13.
== Plan ==
* Short week Hujj and Eid-Al-Adha Public Holidays in Pakistan 15-17
October 2013.
(TCWG-250)
* Update/test arm process record thumb32 support patch incorporating
changes suggested by Will in his review.
(TCWG-280)
* Improve code changes and find ways to avoid hard coded constants
imported from Linux Kernel.
== Issues ==
* Develop machine was broken. Have to resetup the system.
== Progress ==
* Commit fix for pr58423
* Enhance Linaro crosstool-ng
- Fix lp:1232678
- Get EGLIBC version from config files automatically.
- Build aarch64 sysroot to support profile
(https://launchpad.net/linaro-toolchain-binaries/support/01/).
* Update the patch "Reassociate X == CST1 || X == CST2 if popcount
(CST2 - CST1) == 1 into ((X - CST1) & ~(CST2 - CST1)) == 0" according
to comments.
* Continue on CCMP
- Send the phiopt patch to handle CCMP for community review. Jeff
will follow-up it.
- Enhance ifcombine to generate more CCMP.
- Handle more than 2 compares in expand.
- Add new instruction patterns to generate CCMP for ARM. Test is ongoing.
== Plan ==
* Send ifcombine patch for community review.
* Continue on CCMP testing.
== Progress ==
* CbuildV2 Fixes to add fetch md5sums to testsuite/test.sh:
- Subject: [PATCH][test_fetch_md5sums 1/2] lib/fetch.sh: Add
missing ${local_snapshots} to md5sum path.
- Subject: [PATCH][test_fetch_md5sums 2/2] testsuite/test.sh: Add
fetch tests section.
* CbuildV2 Fixes to get testsuite/test.sh working in the source directory:
- Subject: [PATCH][cbuild2 1/3] testsuite/test.sh: Don't use
"warning" function before it is sourced.
- Subject: [PATCH][cbuild2 2/3] testsuite/test.sh: Remove
redundant sourcing of host.conf.
- Subject: [PATCH][cbuild2 3/3] testsuite/test.sh: Re-enable
running tests from src dir.
CbuildV2 random fixes:
- Subject: [PATCH][cbuild2 2/4] cbuild2.sh: correct --disable "boostrap"
- Subject: [PATCH][cbuild2 3/4] config/ffmpeg.conf: separate options
* CbuildV2 fixes to remove ${dir}/md5sums usage (it is redunant with
snapshots/md5sums).
- Subject: [PATCH][cbuild2 1/4] Remove unneeded
infrastructure/md5sums fragment
- Subject: [PATCH][cbuild2 4/4] Remove ${dir} specific md5sums files.
* Fixed error where gcc stage 2 configure returns early (erroneously)
on success.
- [PATCH] Only return early on error following configure
* Fixed error in downloading branch named git repos in lib/checkout.sh.
- [PATCH] Fix git clone to get repo without branch name as part of the url.
== Issues ==
Contacted its@linaro requesting permission to be able to create
personal branches in rsavoye’s cbuild2 git tree. They created a group
for cbuildv2.
Got work laptop installed (dualboot) with Fedora 19 and ran into some
errors with secure boot.
== Plan ==
* Spend some time looking at our options with regard to EGLIBC options
groups when forced to move to glibc proper.
*
== Progress ==
* Backports and release for binutils 2013.10 (x4!)
* Backports and release for eglibc 2013.10
* Submitted a couple more glibc memalign patches
* Committed aarch64 gdb fix
* Bits of malloc work in between
== Issues ==
* None
== Plan ==
* Try and get some uninterrupted time on malloc
--
Will Newton
Toolchain Working Group, Linaro
== Progress ==
* EEMBC
- Updating Linaro image with Clang toolchain changes
- Updating compare_all script to rank boards
- Investigating differences in performance against GCC
* ODroid XU
- Setting up server image (Linaro 13.09 + odroid specific changes)
- CPU scheduler is a mess, forcing "performance" governor at boot seems to
work
- No journal in root fs, remounts ro all the time (bad image?)
- LLVM builds are slow (as fast as Chromebook), maybe it's the SDCard
- Setting it as self-host buildbot in the lab, going well
* Background
- Massive patch review (Sub-Register Live Range Analysis for NEON/VFP et
al)
- LLVM Sync and EuroLLVM meetings
== Plan ==
* Continue investigating performance problems in EEMBC
* Check Odroid XU internal buildbot for stability
