== GDB ==
* Fixed some final minor issues with remote "info proc".
Committed patch set to implement remote "info proc" (LP #804411)
and remote core file generation (LP #804406) to mainline.
Backported to Linaro GDB 7.3.
== GCC ==
* Created patch to fix optimization failures on x86_64 exposed by
Richard's subreg forward-propagation patch.
* Set up Richard's loop-microbenchmarks suite and verified that the
subreg forward-propagation patch causes no regression anywhere,
and shows measurable improvements on some cases in GCC mainline.
With the Linaro GCC 4.6 backport, results don't look as good;
still investigating the cause.
* Started looking into Ramana's vld1 patches.
Mit freundlichen Gruessen / Best Regards
Ulrich Weigand
--
Dr. Ulrich Weigand | Phone: +49-7031/16-3727
STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E.
IBM Deutschland Research & Development GmbH
Vorsitzender des Aufsichtsrats: Martin Jetter | Geschäftsführung: Dirk
Wittkopp
Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht
Stuttgart, HRB 243294
Hi,
* hacked the external toolchain recipe to use the latest version of the
binary toolchain
this kind of reverts the multiarch changes since oe doesn't support
it yet
* built the minimal, sato and qt images for armv7-a
in three different flavors (-O2, -O3 -fno-tree-vectorize, -O3)
using gcc-linaro-arm-linux-gnueabi-2012.01-20120112+bzr2318~linux
see: http://people.linaro.org/~kwerner/oe-core/
* encountered that binutils 2.22 (the gas) fails to build with -O3
due to a warning about an unitialized variable
I'm not convinced this is a real bug, I'll look at it as time permits
workaround: --disable-werror
* all nine of them (the images) are booting within qemu using
vexpress_defconfig!
There is one glitche with the mouse pointer:
it doesn't match to the one of the SDL/VNC window as
the guest pointer sometime accelerates faster that the host pointer
I can hardly imagine this is due to miscompiled code
* Extracted size informations about the generated ELF files:
https://docs.google.com/spreadsheet/ccc?key=0AmsCLxCMnnISdDNQSEM2ZHIxd3dVNj…
Regards,
Ken
RAG:
Red:
Amber:
Green: A15 vexpress system model sufficient for KVM guest now done
Current Milestones:
|| || Planned || Estimate || Actual ||
||cp15-rework || 2012-01-06 || 2012-02-20 || ||
||initial-a15-system-model || 2012-01-27 || 2012-01-27 || 2012-01-17 ||
||qemu-kvm-getting-started || 2012-03-04?|| 2012-03-04?|| ||
(for blueprint definitions: https://wiki.linaro.org/PeterMaydell/QemuKVM)
Historical Milestones:
||a15-usermode-support || 2011-11-10 || 2011-11-10 || 2011-10-27 ||
||upstream-omap3-cleanup || 2011-11-10 || 2011-12-15 || 2011-12-12 ||
== cp15-rework ==
* some (slow) progress on this
* made a list of the missing pieces in my current patchset and
knocked off a few of the easier ones
* fortunately this blueprint isn't really a critical blocker for
KVM work any more
== initial-a15-system-model ==
* vexpress-a15 now submitted upstream (in review) and in qemu-linaro
* ...so this blueprint is complete
* NB: doesn't boot in KVM but this is a trivial kernel-side issue
== other ==
* this category seems to take most of my time :-(
* patch review: still Calxeda, Samsung
* patch review: softfloat type fixes
* identified some bugs in softfloat and arm code that surface if a
softfloat type is 64 bits (at the moment it is 32 bits in practice
but it is being proposed to widen it)
* wrote up the issues to be solved so somebody else can do qemu-linaro
releases
* got qemu-jeos building for ARM [an attempt at making qemu testing
easier by having an automated "build toolchain/kernel/initrd" setup]
* retested QEMU fused-multiply-accumulate against an A15 FPGA
Hi Åsa. The GCC 4.7 release is coming up and the ARM testsuite shows
a lot of regressions:
http://ex.seabright.co.nz/helpers/testlog/gcc-4.7~svn183205/logs/armv7l-nat…
We've been running three builds a week:
http://ex.seabright.co.nz/helpers/buildlog/gcc-4.7~svn
and can use the result to track down the range of commits where a
fault was introduced or exposed.
Could you please look through the results and narrow down where each
failure appeared? I've uploaded all of the results to:
http://people.linaro.org/~michaelh/incoming/trunks.tar.xz
One way is to look at the testsuite-diff.txt in each build as it
should show the change in test results between one build and the next
but might be incomplete. Another way is to pull the failures out of
gcc-testsuite.txt and do a diff against the previous version.
The output should be a revision range for each of the current failures.
Script it up. Don't do it by hand. I'm not that mean.
Ta,
-- Michael
* Started with bug triaging, looked at four different bugs (including
Michael's example). Challenging, but interesting. Got great help from
Ramana and Andrew.
* -o2/-o3 benchmark runs with gcc-linaro-4.6-2012.01 done. coremark, eembc,
denbench, pybench and spec2000. Uploaded all results
~linaro-toolchain-wg/linaro-toolchain-benchmarks/private-runs. Posted
results for -o2-neon vs -o3-neon-novect. Working on charts including also
-o3-neon and -os. Got a bit too occupied with making the matplotlib charts
look pretty. I will try to get all results posted next week.
* Started the add-sunspider-as-a-benchmark blueprint in the background.
Built the v8-engine stand alone on x86 (just with default options). It has
a sample shell included. You can feed it with .js-files. Tried the v8
benchmark, which also comes with the engine.
Regards
Åsa
Hi all,
I will be out for vacation during Chinese Spring Festival (Jan
21-29, 2012). For emergency, call me at +86-13817948562.
Best regards!
-Zhenqiang
Summary:
* Enhance crosstool-ng build process.
Details:
1. Linaro crosstool-ng patches:
* Update and commit the patch to strip debug sections.
* rm *-cc.exe symblink for win32.
* enable gdb for win32 (lp:918479)
* Update README to add flip dependence for build.
2. Verify the following bugs and change status to "Fix Committed"
* lp:906729 baremetal libc headers and libraries are in inconsistent places
* lP:906077 binaries: baremetal include files are in the wrong place
* lP:894527 binaries: remove all symlinks from the Windows build
* lp:889984 binaries: should step across helper functions
* lp:906662 binaries: pgversion can get out of sync with product
3. Analyzed bugs
* lp:915137 Link failure due to absolute paths: Need more
information to reproduce.
* lp:p18478 wind32 doesn't have pkg-config: Try to build pkg-config
for mingw32 host. But failed since it required preinstalled glib2. And
configure error if cross building the glib.
* lp:894528 binaries: can't run if the patch contains whitespace.
Can not reproduce it on cygwin, but still have issue in DOS cmdline
4. Verify the prerelease binary package on windows. And find and
workaround a gdb document name issue since filename on windows is case
insensitive (lp:909195).
5. Raise the gcc trunk build fail issue to crosstool-ng mail-list. But
not confirm "-EL" is the final root cause. Need more investigation.
Planned Absence:
* Jan 21-29, 2012 Chinese Spring Festival
Best regards!
-Zhenqiang
Hello experts,
I don't know whether this is the place to ask this question.Please forgive
if i am wrong.
I am trying to cross-compile Eglibc,(which i thought is similar to the
glibc) library with Linaro tool chain.My aim is to cross-compile the
library and add it with the tool-chain( i assumed that Linaro doesn't ahve
the eglibc libraries by itself).
.
I referred to the link http://www.eglibc.org/archives/patches/msg00078.html
(README.cross-compiling of the libc) and did the following.
I thought that binutils is not required as the tool chain itself contains
the loader, assembler etc.(which are the most important in the binutils).So
i skipped that step.(i am not sure whether this is right.please correct me
if i am wrong).
I did the below steps as in the above link.
1) Copied the Linux Kernel Headers
2) EGLIBC Headers and Preliminary Objects
2.1) configuring the Eglibc headers by the below steps.
appan@oplt$ ~/cross_compile_eglibc/ppc/obj/eglibc-headers$ BUILD_CC=gcc
CC=/home/appan/cross_compile_eglibc/ppc/tools/bin/arm-linux-gnueabi-gcc
CXX=/home/appan/cross_compile_eglibc/ppc/tools/bin/arm-linux-gnueabi-cpp
AR=/home/appan/cross_compile_eglibc/ppc/tools/bin/arm-linux-gnueabi-ar
RANLIB=/home/appaan/cross_compile_eglibc/ppc/tools/bin/arm-linux-gnueabi-ranlib
/home/appan/cross_compile_eglibc/src/libc/configure
--prefix=/home/appan/CC_EGLIBC
--with-headers=/home/appan/cross_compile_eglibc/ppc/sysroot/usr/include/
--build=i686-pc-linux-gnu --host=arm-unknown-linux-gnu --enable-add-ons
--with-tls --with-__thread
2.2) compilation
make install-headers install_root=$sysroot install-bootstrap-headers=yes
But following is the error i get.
> /home/appan/cross_compile_eglibc/ppc/obj/eglibc-headers/Versions.v.iT<http://versions.v.it/>
In file included from <stdin>:1:0:
ports/sysdeps/arm/nptl/tls.h:48:3: error: #*error "TLS support is required.*
"
make[1]: *** No rule to make target `headers_install'. Stop.
make[1]: Leaving directory `/home/appan/cross_compile_eglibc/src/libc'
make: *** [headers_install] Error 2
I tried googling, but i did not get the solution for this..
please provide me with some suggestions and that will be of great help to
me...
thanks and regards
appan
Hi there!
I need some help with how to handle this bug:
https://bugs.launchpad.net/gcc-linaro/+bug/873977
It looks like an improvement suggestion more than a bug.
Regards
Åsa
*Automatically save preprocessed source on ICE*In order to help with bug
reporting, gcc could save the preprocessed source of the unit that caused
the ICE, so one can just pick it up and attach it to bug reports instead of
trying to reproduce it manually.
Hi Peter. I've had a poke about in qemu-linaro, OpenStack, and
libvirt to get a feel for the KVM integration work. My scratch notes
are here:
https://wiki.linaro.org/MichaelHope/Sandbox/QEMUA15GuestNotes
I'm feeling happy about the integration. The parts that I've seen
have good separation, are architecture neutral, and have some ARM
support. We can prototype using virtual x86 based masters and QEMU
TCG based compute instances.
I've seen a few bugs and assumptions: OpenStack defaults to virtio,
boot=hda, and fixed kernel args; and libvirt can't parse the the
qemu-linaro version string. There will be more.
I'll feed this into the KVM 1.0 task list and share it.
-- Michael
