- linaro-toolchain - lists.linaro.org

by Will Newton

== Progress == * Committed binutils testsuite fix for precise, should be green in cbuild now. * Comitted binutils fix for ARM IFUNC issue. * Various small binutils fixes for AArch64. * Lots of rework of glibc memcpy patch, now up to v6. * Integrated latest bionic string functions into cortex-strings. * AArch64 IFUNC code and tests beginning to take shape. == Issues == * None. == Plan == * Another respin of glibc memcpy patch (last one?). * More work on AArch64 IFUNC. * May get time to look into gdb bug Peter found. * 4 day week due to bank holiday. -- Will Newton Toolchain Working Group, Linaro

12 years, 2 months

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[ACTIVITY] report week 18

by Peter Maydell

Progress: * office move * checking up on status of licensing issues with QEMU's softfloat * cleaned up obsolete qemu blueprints in launchpad [Matt G-D is going to finish the last bits of transferring the backlog to JIRA where appropriate] * booked travel/hotel for Connect Dublin * reviewed John Rigby's mach-virt and aarch64 patches * VIRT-49 ** can run KVM with this code now, need to test migration proper (requires kernel to support arch timer state save/load), and clean up some TODOs and other cruft ** GDB is behaving oddly connected to QEMU's stub, which I think is a GDB bug (LP:1175525) but may also be a QEMU side issue Plans: * VIRT-49 debug & patch cleanup * NB: UK bank holiday next week, will be 3 day week for me -- PMM

12 years, 2 months

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[ACTIVITY] Week 18

by Yvan Roux

== Issues == * None == Progress == * Short week (only 2 days) * Libunwind AArch64 support: - Did some fixes and cleanups after review. - re-submitted upstream * LRA on ARM and AArch64: - Enabled LRA on trunk for ARM target - build doesn't complete, investigation ongoing * Internal meetings == Plan == * Short week too * Continue on LRA

12 years, 2 months

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[ACTIVITY]

by Renato Golin

== Progress == * EuroLLVM 2013 - Conference Mon~Tue - Analysing questionnaire's response - Writing a blog entry, reports * Shorter week, low progress == Plan == * Release - Start testing version 3.2 - Check-out frozen 3.3 and run the same tests - Make sure calxeda node is up to the task - Buy a Chromebook for further testing (?) I'll probably spend all my time worrying about the release, one way or another...

12 years, 2 months

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Aarch64 toolchain build on Redhat machine

by Kalai Narayanan-SSI

Hi, I'm trying to build the aarch64 tool chain from source on a Redhat machine. I see that build.mk in the crosstool package requires a few .deb packages. If I want to build this on a Redhat machine, what are the changes I have to do? Thanks, Kalai

12 years, 2 months

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ARM native version of GCC

by Sukumar Ghorai

Hi, I am looking for pre-build (binary, tar) GCC for native ARM e.g. I need to use in Angstrom FS and panda board to compile the code. Thanks & regards, Sukumar

12 years, 2 months

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QT for aarch64

by Aparna Mandke

Hi, I am trying to compile Qt 4.8 for ARMv8. I need following packages. libqt4-dev libqt4-opengl-dev libphonon-dev libicu-dev libsqlite3-dev libxext-dev libxrender-dev gperf libfontconfig1-dev libphonon-dev libpng12-dev libjpeg62-dev I could not find these or any such packages on Linaro website. Is there any website which maintains packages compiled for ARMv8? I downloaded Qt4.8 source code. But it seems I need to do many hacks to get it compiled for ARMv8. Is it already available some where? Any help will be appreciated. Thanks Aparna

12 years, 2 months

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[ACTIVITY] 22 - 26 April 2013

by Omair Javaid

== Progress == * Compared gdb test suite results in arm native none and arm remote gdbserver configurations. Filled up the googledoc sheet with the comparison. * Created a patch for dwarf failures still need to sync it with gdb main trunk and then need to test it on chrome book and submit after review. * Investigated gdb.mi test suite failures most of them seems to be occuring due to long delay. Will retest on chrome book and update. * Received chrome book on Friday started configuration created a recovery disk and SD card, facing a kernel panic for now. * 1:1 with Matt == Plan == * Complete chrome book configuration. * Run arm test suite in different configurations on chrome book. * Update the comparison sheet of gdb test suite results in different configurations after running tests on chrome book. * Public Holiday on 1st of May

12 years, 2 months

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[ACTIVITY] 22-26 April 2013

by Venkataramanan Kumar

== Progress == * AARCH64 - Gprof support. Make GCC generate profile information (On-going). Defined hook and macros in GCC to emit "mcount" instrumented calls. Looked at ARM implementation and veener code in glibc which implements mcount. Discussed with Matt, and decided to use generic "mcount" implementation in glibc for aarch64. The generic uses built_in_return_address. Looking at defining macros and function which traverses frames back and returns the desired frame address. == Plan == * Continue gprof support work for Aarch64 Planned leaves: 1 May: Labor Day's holiday.

12 years, 2 months

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[ACTIVITY] 22-26 April 2013

by Kugan

== Summary == - http://cards.linaro.org/browse/TCWG-14 - ran into space issues with chromebook and issues running spec2000 locally due to that. Finally reinstalled Ubuntu on 32GB card and set-up everything. - There is a potential issue with zero/sign extension based VRP. - 254.gap goes into infinite loop. Investigating it. - checked VRP for improvement of zero/sign extension (missing case in CRC). == Plan== - http://cards.linaro.org/browse/TCWG-14 - Find the cause for 254.gap infinite loop and fix it. - Find a solution to missing case in CRC

12 years, 2 months

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[ACTIVITY] Week 17

by Zhenqiang Chen

Summary: * Enhance Linaro crosstool-ng. Details: 1. Work with Bero to release 4.8 binary build. 2. Update Linaro crosstool-ng to use ISL/CLooG for 4.8 build (lp:1172595). 3. Rebase conditional compare experimental codes to lp:gcc-linaro/4.8. Plan: * Investigate the impact of conditional compare on optimizations. Planned leaves: * 29 April - 1 May: Labor Day's holiday. Best Regards! -Zhenqiang

12 years, 2 months

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[ACTIVITY] Week 17

by Yvan Roux

== Issues == * None == Progress == * Libunwind AArch64 support: - Fixed signal frame issue. - Sent patch upstream for review. - Delivered patch to OE team for early testing. * LRA on ARM and AArch64: - Start to look at what is missing. == Plan == * 3 days off next week * Continue on LRA.

12 years, 2 months

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packages for aarch64 target

by Aparna Mandke

Hi, I need following packages for ARMv8 (aarch64) target. Where can I find these packages? Or do I have to download source code and compile those using linaro-cross-compiler? libqt4-dev libqt4-opengl-dev libphonon-dev libicu-dev libsqlite3-dev libxext-dev libxrender-dev gperf libfontconfig1-dev libphonon-dev libpng12-dev libjpeg62-dev Thanks Aparna

12 years, 2 months

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[ACTIVITY] week 17

by Renato Golin

== Progress == * Benchmarks - Running EEMBC on a Panda - LLVM on par with GCC in code size and run time * Release Planning - Calxeda busted, delays, but got test-suite running on it - Bootstrap and test-suite fail with atomic support, investigating - Preparing a Beagleboard for conscience relief - Coordinating with other parties on hardware/testing/roles * EuroLLVM 2013 - Meetings, badges, preparations, final run * Support - Helping folks with test-suite, buildbots, reviewing patches, etc == Issues == Broke my glasses on a place impossible to fix, had to resort to epoxy while I wait for an eye test == Plan == * EuroLLVM Mon~Tue * Continue setting up release hardware/process, order some more boards * Help Sylvestre/Galina setting up Jenkins/Buildbots for release * Try to run a more substantial benchmark * Fix my glasses

12 years, 2 months

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[ACTIVITY] 22-26 April 2013

by Christophe Lyon

== Progress == * Disable-peeling: had to re-spawn benchmark jobs (both reference and updated patch) * Libsanitizer: updated patch running under cbuild before updating my proposal upstream. * Neon intrinsics: - some progress on removing unnecessary moves around vuzp. - there are still some around veor * Bi-endian compiler: read article, attended call * Internal support == Next == Holidays next week == Future == * Disable peeling: analyze results * Revert-coalesce: same * Libsanitizer: sent updated patch upstream if validation OK * Neon intrinsics: continue improving crc with vuzp

12 years, 2 months

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[ACTIVITY] Week 17

by Will Newton

== Progress == * Submitted binutils patch for testsuite failure on precise. * Updated glibc memcpy patch based on feedback. * Updated binutils IFUNC patch based on feedback. * Started working on AArch64 IFUNC. * Submitted a couple of cleanup patches for AArch64 binutils. == Issues == * 2 cards blocked on upstream review, 1 blocked on Android team. == Plan == * Should get binutils IFUNC patch committed Monday. * Need to ping other patches again. * More work on AArch64 IFUNC. -- Will Newton Toolchain Working Group, Linaro

12 years, 2 months

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[ACTIVITY] report week 17

by Peter Maydell

Progress: * office move * VIRT-49: ** confirmed I can run KVM on the Arndale, started using it as test platform for the migration work ** I have most of the code for cp15 register migration written ** in debug phase; there is a case I hadn't considered that needs a little thought Plans: * keep pushing on with VIRT-49 * book travel/hotel for Connect Dublin * office move unpacking -- PMM

12 years, 2 months

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clang + VFP

by Tom Gall

Hi. First. #include <Im-doing-something-somewhat-odd.h> I'm trying to use a current clang/llvm (current as in git checkout from just the other day) to build an opencl kernel and then link that with some code which has been compiled with gcc/g++. When the clang .o is linked to the gcc/gcc+, I'm getting /home/tgall/opencl/SNU/tmp2/cl_temp_1.tkl uses VFP register arguments, /home/tgall/opencl/SNU/tmp2/cl_temp_1.o does not the cl_temp_1.o was produced with clang. the cl_temp_1.tkl via gcc/g++. Let's dive into details. This is following in the footsteps of an open source framework called SNU which implements OpenCL. Within SNU they had a fairly old version of clang+llvm which wouldn't even build on ARM so step one has been to figure out what SNU was doing with clang and replicate this using latest clang. So given the following minimal test kernel placed into cl_temp_1.cl /* Header to make Clang compatible with OpenCL */ #define __global __attribute__((address_space(1))) int get_global_id(int index); /* Test kernel */ __kernel void test(__global float *in, __global float *out) { int index = get_global_id(0); out[index] = 3.14159f * in[index] + in[index]; } then we following the following steps: clang -mfloat-abi=hard -mfpu=neon -S -emit-llvm -x cl -I/home/tgall/opencl/SNU/src/compiler/tools/clang/lib/Headers -I/home/tgall/opencl/SNU/inc -include /home/tgall/opencl/SNU/inc/comp/cl_kernel.h /home/tgall/opencl/SNU/tmp2/cl_temp_1.cl -o /home/tgall/opencl/SNU/tmp2/cl_temp_1.ll with the resulting cl_temp_1.ll we: llc /home/tgall/opencl/SNU/tmp2/cl_temp_1.ll which results in cl_temp_1.s. Then: clang -c -mfloat-abi=hard -mfpu=neon -o /home/tgall/opencl/SNU/tmp2/cl_temp_1.o /home/tgall/opencl/SNU/tmp2/cl_temp_1.s so now in theory we should have a perflectly good cl_temp_1.o ready for linking. But first let's get the bits ready that will be built by the traditional gnu toolschain. We have: gcc -shared -fPIC -O3 -o /home/tgall/opencl/SNU/tmp2/cl_temp_1_info.so /home/tgall/opencl/SNU/tmp2/cl_temp_1_info.c and gcc -shared -fPIC -march=armv7-a -mtune=cortex-a9 -mfloat-abi=hard -mfpu=neon -fsigned-char -DDEF_INCLUDE_ARM -I. -I /home/tgall/opencl/SNU/src/runtime/hal/device/cpu -I /home/tgall/opencl/SNU/src/runtime/include -I /home/tgall/opencl/SNU/src/runtime/core -I /home/tgall/opencl/SNU/src/runtime/core/device -I /home/tgall/opencl/SNU/src/runtime/hal -I /home/tgall/opencl/SNU/src/runtime/hal/device -DTARGET_MACH_CPU -O3 -c /home/tgall/opencl/SNU/src/runtime/hal/device/cpu/hal.c -o /home/tgall/opencl/SNU/tmp2/hal.o And here we try to link it all together. g++ -shared -fPIC -march=armv7-a -mtune=cortex-a9 -mfloat-abi=hard -mfpu=neon -fsigned-char -DDEF_INCLUDE_ARM -O3 -o /home/tgall/opencl/SNU/tmp2/cl_temp_1.tkl /home/tgall/opencl/SNU/tmp2/hal.o /home/tgall/opencl/SNU/tmp2/cl_temp_1.o -L/home/tgall/opencl/SNU/lib/lnx_arm -lsnusamsung_opencl_builtin_lnx_arm -lpthread -lm and bang we're back to the error I first mentioned: /usr/bin/ld: error: /home/tgall/opencl/SNU/tmp2/cl_temp_1.tkl uses VFP register arguments, /home/tgall/opencl/SNU/tmp2/cl_temp_1.o does not so first obvious question is -mfloat-abi=hard -mfpu=neon correct for clang? tgall@miranda:~/opencl/SNU/tmp2$ clang --version clang version 3.3 Target: armv7l-unknown-linux-gnueabihf Thread model: posix Thanks for any suggestions! -- Regards, Tom "Where's the kaboom!? There was supposed to be an earth-shattering kaboom!" Marvin Martian Tech Lead, Graphics Working Group | Linaro.org │ Open source software for ARM SoCs w) tom.gall att linaro.org h) tom_gall att mac.com

12 years, 2 months

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[ANNOUNCE] Linaro Toolchain Binaries 2013.04 released

by Bernhard Rosenkränzer

The Linaro Toolchain and Platform Working Groups are pleased to announce the 2013.04 release of the Linaro Toolchain Binaries, a pre-built version of Linaro GCC and Linaro GDB that runs on generic Linux or Windows and targets the glibc Linaro Evaluation Build. This will likely be the last binary release based on gcc 4.7 -- it also introduces the first gcc 4.8 based build. Uses include: * Cross compiling ARM applications from your laptop * Remote debugging * Build the Linux kernel for your board What's included: * Linaro GCC 4.7 2013.04 and Linaro GCC 4.8 2013.04 * Linaro GDB 7.5 2012.12 * A statically linked gdbserver * A system root * Manuals under share/doc/ The system root contains the basic header files and libraries to link your programs against. Interesting changes include: * gcc is updated to 4.8 (in the 4.8 builds) * rpc support in eglibc is re-enabled * Version reported by ARMv7 and AArch64 cross toolchains has been unified The Linux version is supported on Ubuntu 10.04.3 and 12.04, Debian 6.0.2, Fedora 16, openSUSE 12.1, Red Hat Enterprise Linux Workstation 5.7 and later, and should run on any Linux Standard Base 3.0 compatible distribution. Please see the README about running on x86_64 hosts. The Windows version is supported on Windows XP Pro SP3, Windows Vista Business SP2, and Windows 7 Pro SP1. The binaries and build scripts are available from: https://launchpad.net/linaro-toolchain-binaries/trunk/2013.04 Need help? Ask a question on https://ask.linaro.org/ Already on Launchpad? Submit a bug at https://bugs.launchpad.net/linaro-toolchain-binaries On IRC? See us on #linaro on Freenode. Other ways that you can contact us or get involved are listed at https://wiki.linaro.org/GettingInvolved.

12 years, 2 months

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[ACTIVITY] Week 16

by Zhenqiang Chen

Summary: * ARM internal training and R/M toolchain related work. * Investigate Linaro toolchain 4.8 build issues. Details: 1. Fix several linaro toolchain 4.8 binary build issues: * nls patch need be updated to add (char *) when assigning the result of xmalloc to a char*. * gcc build pass-2 need build libbacktrace (get patch from crosstool-ng upstream). * gcc build pass-2 build with "-j4" fail. Seams build order issue. A workaround is to remove "-j4". * Mingw32 confiugre fail due to missing ISL. A workaround is to add "--without-isl" Plan: * Work with Bero to release 4.8. * Swith to ISL/CLooG for future release. Best Regards! -Zhenqiang

12 years, 2 months

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Linaro GCC 4.8 - Where are prebuilt baremetal (arm-none-eabi-) toolchain binaries?

by Sugumar Natarajan

I couldn't find the arm-none-eabi- bare metal version of Linaro GCC 4.8. Please provide the link for prebuilt baremetal tool chain binaries? -Sugumar -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

12 years, 2 months

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Thoughts on progressing Toolchain Working Group Lava integration

by Matthew Gretton-Dann

Paul, I've been having some thoughts about CBuild and Lava and the TCWG integration of them both. I wish to share them and open them up for general discussion. The background to this has been the flakiness of the Panda's (due to heat), the Arndale (due to board 'set-up' issues), and getting a batch of Calxeda nodes working. The following discussion refers to building and testing only, *not* benchmarking. If you look at http://cbuild.validation.linaro.org/helpers/scheduler you will see a bunch of calxeda01_* nodes have been added to CBuild. After a week of sorting them out they provide builds twice as fast as the Panda boards. However, during the setup of the boards I came to the conclusion that we set build slaves up incorrectly, and that there is a better way. The issues I encountered were: * The Calxeda's run quantal - yet we want to build on precise. * Its hard to get a machine running in hard-float to bootstrap a soft-float compiler and vice-versa. * My understanding of how the Lava integration works is that it runs the cbuild install scripts each time, and so we can't necessarily reproduce a build if the upstream packages have been changed. Having thought about this a bit I came to the conclusion that the simple solution is to use chroots (managed by schroot), and to change the architecture a bit. The old architecture is everything is put into the main file-system as one layer. The new architecture would be to split this into two: 1. Rootfs - Contains just enough to boot the system and knows how to download an appropriate chroot and start it. 2. Chroots - these contain a setup build system that can be used for particular builds. The rootfs can be machine type specific (as necessary), and for builds can be a stock linaro root filesystem. It will contain scripts to set the users needed up, and then to download an appropriate chroot and run it. The chroot will be set up for a particular type of build (soft-float vs hard-float) and will be the same for all platforms. The advantage of this is that I can then download a chroot to my ChromeBook and reproduce a build locally in the same environment to diagnose issues. The Calxeda nodes in cbuild use this type of infrastructure - the rootfs is running quantal (and I have no idea how it is configured - it is what Steve supplied me with). Each node then runs two chroots (precise armel and precise armhf) which take it in turns to ask the cbuild scheduler whether there is a job available. So my first question is does any of the above make sense? Next steps as I see it are: 1. Paul/Dave - what stage is getting the Pandaboards in the Lava farm cooled at? One advantage of the above architecture is we could use a stock Pandaboard kernel & rootfs that has thermal limiting turned on for builds, so that things don't fall over all the time. 2. Paul - how hard would it be to try and fire up a Calxeda node into Lava? We can use one of the ones assigned to me. I don't need any fancy multinode stuff that Michael Hudson-Doyle is working on - each node can be considered a separate board. I feel guilty that I put the nodes into CBuild without looking at Lava - but it was easier to do and got me going - I think correcting that is important 3. Generally - What's the state of the Arndale boards in Lava? Fathi has got GCC building reliably, although I believe he is now facing networking issues. 4. Paul - If Arndale boards are available in Lava - how much effort would it be to make them available to CBuild? One issue the above doesn't solve as far as I see it is being able to say to Lava that we can do a build on any ARMv7-A CBuild compatible board. I don't generally care whether the build happens on an Arndale, Panda, or Calxeda board - I want the result in the shortest possible time. A final note on benchmarking. I think the above scheme could work for benchmarking targets all we need to do is build a kernel/rootfs that is setup to provide a system that produces repeatable benchmarking results. Comments welcome from all. Thanks, Matt -- Matthew Gretton-Dann Toolchain Working Group, Linaro

12 years, 2 months

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[ACTIVITY] 15-19 April 2013

by Christophe Lyon

== Progress == * Disable-peeling: waiting for reference job results * Libsanitizer: - identified the reason for different behaviour on board and on simulator - proposed a workaround on gcc-patches (qemu-user has a few limitations, so it's desirable to skip some libsanitizer tests) - in the mean time libsanitizer developers received similar concerns from android, and are considering a runtime environment variable to control use of stderr * Neon intrinsics: - resumed investigation on vuzp crc * Internal support == Next == * Peeling: analyze results when available * Revert-coalesce: same * Libsanitizer: reach agreement with upstream * Neon intrinsics: continue with vuzp crc

12 years, 2 months

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[ACTIVITY] Week 16

by Will Newton

== Progress == * Further work on glibc memcpy IFUNC patch based on review. * Ported libdwarf to aarch64 and submitted upstream. * Disabled gold build in binutils cbuild job and created a gold job. * Investigated binutils testsuite failure on precise. * On leave Friday. == Issues == * None. == Plan == * Submit a patch for binutils testsuite failure on precise. * Complete work on glibc memcpy iFUNC patch. * Follow up binutils IFUNC patch. * AArch64 IFUNC next... -- Will Newton Toolchain Working Group, Linaro

12 years, 2 months

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[ACTIVITY] 15 - 19 April 2013

by Omair Javaid

== Progress == * Completed investigation of GDB dwarf test suite failures on ARM. Almost all failures will be fixed with small updates to test cases assembly language files. * Checked-out GDB 7.6 branch and did comparison of dwarf test case failures on arm. Some test cases have been updated already and dont need a patch. * Started filtering GDB test suite results on ARM for possible failures due to assembly language incompatibility. * Tried some experimentation with cbuild, and ec2 instances only to find out they are not connected with lab. * Completed Ireland Visa process. Spent Friday and most part of Thursday for the documents attestation, fee submission and postage stuff. *** Still No blue-print available to log work in JIRA. == Plan == * Filter all arm assembly language compatibility updates required to gdb test suite and create a patch. * Get an intro to gdb patch submission process for a possible fix to gdb test suite for arm assembly compatibility. * Start looking into gdb.mi test suite failures on arm. * Fill up the arm native vs arm remote comparison sheet. * Figure out a way to use hackbox for gdb testing on arm.

12 years, 2 months

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