- linaro-toolchain - lists.linaro.org

by Renato Golin

Richard, I found some emails about you implementing softvfp back in 2003, and I'd like to know what is the expected behaviour when it conflicts with the target triple, for example: -triple arm-linux-gnueabihf + -mfpu=sofvfp+vfp In this case, in LLVM, the triple sets "-float-abi=hard" but the fpu would set "+soft-float-abi", which are contradictory flags. Is that case even possible? If so, what's the expected behaviour? Soft or hard float? Do the extra flags always override the triple behaviour? Is it expected that *every* compiler flag will work on a last-seen-sets-behaviour manner? cheers, --renato

12 years, 5 months

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[ACTIVITY] February 10-16

by Maxim Kuvyrkov

== Week of February 10th == - Reproduced STREAM performance regression. Started investigation. (3/10) - Setup development environment on HP Chromebook 11. (3/10) -- Chrome OS + crouton + ubuntu 12.04 + ppa/chromebook-arm -- produced a nice dev board environment. - Continued account setup and preparations for Connect. (2/10) - Misc. (2/10) -- Various meetings. -- Volunteered as admin for GCC's GSoC 2014. Filled in the application, started to stir up buzz in the GCC community. == Week of February 17th == - Continue investigation of STREAM performance regression. - Prepare FSF GCC 4.10 presentation for Connect. - Look more into how LAVA does things and how to customize rootfs'es for boards. -- In particular I'm interested in how to boot rootfs with matching kernel and linux-tools (perf is what I need) with ssh server on keystone board. -- Maxim Kuvyrkov www.linaro.org

12 years, 5 months

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[ACTIVITY] 10 - 14 Feburary 2014

by Omair Javaid

== Progress == * Updated, tested and re-submitted patch for arm native watchpoint/hwbreak rework. [2/10] * Updated, split-up and tested patches for process record ASIMD, VFP etc support. [TCWG-251] [TCWG-252] [3/10] * Tried setting up gdb for aarch64, no luck yet. [TCWG-389] [1/10] * Investigation of work required for catchpoints support for remote gdb and gdbserver. [TCWG-263] [2/10] * Study armv8 instruction set for record replay support. [TCWG-389] [2/10] == Plan == * Follow up on upstream patches. * Study aarch64 code and create task breakdown for record/replay support. [TCWG-389] * Setup gdb for aarch64 and try to run a demo application. [TCWG-389] * Write how-to for using scripts to compare two gdb testsuite runs. [TCWG-96] * Out of office on Tuesday and Wednesday for follow up on Macau visa application.

12 years, 5 months

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[ACTIVITY] Week 7

by Yvan Roux

== Issues == * none == Progress == * 4.8 2014.02 Engineering release. (3/10) * TCWG-58 : AArch64: Enable libsanitizer (2/10) o re-based christophe's patch on fresh LLVM sources. o committed in LLVM (Thanks Renato for your help) o Progress stopped on this card until 4.10 GCC is opened * LRA on AArch32: o TCWG-343 : Make LRA the default for the ARM backend (0/10) - No progress this week on my side. - Vladimir upstreamed a fix for Thumb code size regression http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59535 o TCWG-345 : Analyse performance of LRA for ARM. (1/10) - re-run Spec2K on Cortex-a15. * Misc: o LCA'14 : AArch64 toolchain status session. (1/10) o Support Christian Bruel in his Linaro ramp up. (1/10) o Various meetings. (2/10) == Next == * Continue the on-going tasks * backports review

12 years, 5 months

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[ACTIVITY] Week 07

by Zhenqiang Chen

== Issues == * None == Progress == * Take care lp: 1270040, lp:1278337 and Beagleboard "Abort" issue. * Respawn 2014.01 release to use newlib-linaro-2.1.0-2014.02 for baremetal toolchains (http://cbuild.validation.linaro.org/binaries/2014.01-01/) * Test codes to duplicate shared compares to get more conditional compares. Fix the bootstrap issue. But the latest test does not show performance improvement in Spec2K. * Rebase and test the CCMP patch. * Read document about aarch64 CCMP/CCMN instructions and write codes/patterns to generate the instructions. Test is ongoing. == Plans == * Ccmp for AARCH64.

12 years, 5 months

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[Activity] Feb 10-16

by Rob Savoye

== Progress == * Figure how to have tcwgweb and cbuild-tools process the test results from Jenkins and produce the diffs for comparison. (TCWG-391 6/10) * Wrote script to convert Jenkins produced data files to tcwgweb format. (TCWG-391 1/10) * Meetings and misc. (3/10) - Worked on LCA14 presentation. == Plan == * Continue fighting with tcwgweb to run test comparisons for Jenkins builds. TCWG-391) * Now that SSH is setup correctly in the TCWG build farm, GCC testing tries to execute the remote tests, but hit's an error in DejaGnu, which needs to be debugged and fixed. (TCWG-324) == Leave == * Off to Nepal & Mt Everest after Connect.

12 years, 5 months

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[Weekly] 10-14 FEB 2014

by Michael Collison

== This week == Monday - Off Reworked backports off origin instead of crypto-backport branch. Also used read/write git branch to push - Affected backports 201164-206168, 201170, 201175, 201261, 201263 and 202020 Submitted backports for code review via git review - Aarch64 ILP backports: 201164-206168, 201170, and 201175 - Aarch64 support for NEG in vectors registers: 201261 and 201263 - Aarch64 support for SISD shifts: 202020 == Next week == Submit backport 202256 for code review Backport 202407 assigned to me == Future == Things you plan to do in the future. -- Michael Collison Linaro Toolchain Working Group michael.collison(a)linaro.org

12 years, 6 months

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[ACTIVITY] Week 7

by Renato Golin

== Progress == * IAS (TCWG-377) - Stopping progress on .dn/.qn aliases, not suitable for IAS atm. - Working on softvfp+vfp aliases (PR18689) * EHABI (TCWG-124) - Removed -arm-disable-ehabi - Waiting for Keith's patch to work on EHABI respecting uwtables * Compiler-RT (TCWG-125) - Adding sanitizer guidelines for GCC developers - Implemented --rtlib=compiler-rt for Linux targets - Test-suite runs fine, only one error (PR18812) * AArch64 (TCWG-387) - First native builds, updating config.guess/sub (license issues) - Found some JIT problems, unittests should be disabled - Found some memory test failures - Found 20 failures in test-suite * Background - Usual patch reviews & discussions - Started a fire on GCC list, will monitor interactions closer - Had a BoF accepted at the GNU Cauldron about GCC+LLVM collaboration - Discussing possible LTO changes to binutils with GCC devs - Helping Christophe/Yvan add AArch64 support for asan * Time - CARD-862 8/10 - Others 2/10 == Plan == * Continue softvfp in Clang's driver * Work on Dwarf unwind tables * Investigate RT and AArch64 failures

12 years, 6 months

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[ACTIVITY] 10 - 14 February 2014

by Will Newton

== Progress == * newlib 2.1.0-2014.02 release (2/10) * Research and analysis of malloc workloads for benchmarking (2/10, TCWG-160) * QEMU ARMv8 CRC instructions (4/10, TCWG-52) * Slides for Connect (1/10) * Misc. patch management and looking at bugs (1/10) == Issues == * None == Plan == * QEMU CRC instructions * Finalize slides for Connect * malloc -- Will Newton Toolchain Working Group, Linaro

12 years, 6 months

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[ANNOUNCE] Linaro GCC 4.8 2014.02 released

by Yvan Roux

The Linaro Toolchain Working Group is pleased to announce the 2014.02 engineering release of Linaro GCC 4.8. As announced at Linaro Connect USA 2013 Linaro GCC is moving to a pattern of quarterly stable releases, with engineering releases in the intervening months. This is the first engineering release. The next stable release will be the 2014.04 release. Linaro GCC 4.8 2014.02 is the eleventh release in the 4.8 series. Based off the latest GCC 4.8.3+svn207411 release, it includes performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.8.3+svn207411 * ARM-v8 crypto intrinsics support * New vectorizer cost model The source tarball is available from: http://releases.linaro.org/14.02/components/toolchain/gcc-linaro/4.8 Downloads are available from the Linaro Releases website: http://www.linaro.org/downloads/ More information on the features and issues are available from the release page: https://launchpad.net/gcc-linaro/4.8/4.8-2014.02 Mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain Bugs: https://bugs.launchpad.net/gcc-linaro/ Questions? https://ask.linaro.org/ Interested in commercial support? Inquire at support(a)linaro.org

12 years, 6 months

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Fwd: seemingly bug in Linaro gcc 4.8

by Koen Kooi

This should match what we have in meta-linaro/dora, which is the linaro 2013.12 toolchain release. ---------- Forwarded message ---------- From: Koen Kooi <koen(a)dominion.thruhere.net> Date: 17 January 2014 19:35 Subject: Fwd: seemingly bug in Linaro gcc 4.8 To: Koen Kooi <koen.kooi(a)linaro.org> Begin doorgestuurd bericht: > Van: Khem Raj <raj.khem(a)gmail.com> > Onderwerp: seemingly bug in Linaro gcc 4.8 > Datum: 17 januari 2014 17:56:23 CET > Aan: Koen Kooi <koen(a)dominion.thruhere.net> > > Hey Koen > > I am seeing a problem with linaro gcc-48 basically angstrom/2013.12 release > The issue is attached sample C file. When compiled and run on my ArchLinux > box which is running upstream gcc 4.8.2 it works ok > > but on beagleboard it fails. > > > to compile > > $CXX -pthread -std=gnu++11 a.cpp > > on ARCH > > kraj@leo ~ > g++ b.cpp -std=gnu++11 -pthread > kraj@leo ~ > ./a.out > 140309495478016 i: 1 > 140309503870720 i: 2 > > on Beagleboard > > root@beagleboard:~# ./std-thread > pure virtual method called > terminate called without an active exception > Aborted > > Can you pass this to right folks in Linaro and get some help in resolving it > > I havent yet trried it with OE-Core gcc which is also gcc 4.8 > > The issue is most probably ARM related as it seems to me. > > Thanks for help > > -Khem >

12 years, 6 months

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Configuration specifics of prebuilt libc binaries

by Evan Carson

Hello, I'm maintaining an older release we have which uses the older toolchian binaries in gcc-linaro-arm-linux-gnueabi-2012.03-20120326_linux. I've identified a bug in glibc we appear to be encountering and would like to port the fix back. I initially went the route of compiling the above toolchain binaries from source as described in the readme.txt but then found that the cross compiler binary build does not include the e/glibc build and these appear to be sucked in in binary form (oneiric-sysroot-r1). Are there any documents how these prebuilt libc binaries were created? Please note that I'm not asking in general how to build glibc. I've built a version with and without this bug patched to verify that it is indeed what we are hitting. I'm more hoping to get an idea of how the specific binaries mentioned above were built. Thanks in advance for any help! Evan Carson

12 years, 6 months

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[Weekly] 3-7 FEB 2014

by Michael Collison

== This week == - Backported 206261 and 201263 - AArch64 support NEG in vector registers - Backported 202020 - Support SISD shifts - Backported 202259 - AARCH64, fix return types for vaddvq_s64, vaaddvq_u64 - Travel back to US on Friday, February 7th == Next week == - Submit backport for review once crypto instruction review is complete and approved - Continue backports from trunk - New backports == Future == -- Michael Collison Linaro Toolchain Working Group michael.collison(a)linaro.org

12 years, 6 months

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linaro_binutils-2_24-2013_12_release tag and associated commits missing

by Gregory Fong

Hello, The binutils 2.24-2013.12 release page says that the release was built from the linaro_binutils-2_24-2013_12_release tag, but that tag doesn't seem to actually be present in the git repo at http://git.linaro.org/toolchain/binutils.git . Could that tag please be pushed? Thanks and regards, Gregory

12 years, 6 months

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[Activity] Feb 3-9

by Rob Savoye

== Progress == * Cbuildv2 now builds a static gdbserver for cross linux targets. (1/10) * Fixed Cbuildv2 bugs and added feature requests from Venkat, who is bravely being our beta site. (1/10) * Got .sum files produced from Jenkins builds copied to tcwgweb. Much of this was getting everything setup to allow files to be copied securely. (TCWG-386 - 3/10) * QEMU image prep for softfp and Rasberry PI testing. (TCWG-380 - 2/10) * Meetings and misc. (3/10) - Tweaks to Jenkins support so build names the remote directory in a way tcwgweb expects. - Added more info to TCWG Build Farm wiki page. (https://wiki.linaro.org/TCWG%20build%20farm) == Plan == * Figure out how to make tcwgweb run test comparisons. * Now that SSH is setup correctly in the TCWG build farm, GCC testing tries to execute the remote tests, but hits an error in DejaGnu, which needs to be debugged and fixed. (TCWG 324) * Add Win32 installer for Canadian cross built binary releases to Cbuildv2. (TCWG-381)

12 years, 6 months

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[ACTIVITY] Week 6

by Yvan Roux

== Issues == * none == Progress == * LRA on AArch32: o TCWG-343 : Make LRA the default for the ARM backend (0/10) - No progress this week. o TCWG-345 : Analyse performance of LRA for ARM. (3/10) - Continue analysis on Cortex-a15. * LRA on AArch64: (2/10) o Start to look at PR 59222 (ICE with ILP32). * Branch merge and backports reviews. (2/10) * Continued Linaro 4.8 release performance on Cortex-a15. (2/10) * Various meetings. (1/10) * Misc: o start to prepare AArch64 toolchain status for Connect session. == Next == * Continue the on-going tasks * 4.8 2014.02 Engineering release

12 years, 6 months

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[ACTIVITY] 3-7 February 2014

by Christophe Lyon

== Progress == * Libsanitzer for AArch64: (3/10) - QEMU patch to handle missing mmap flag accepted. - Charles was able to build GCC + run the sanitizer tests on board - cleanup patch, ready to be sent to the LLVM list for approval * Cross-validation: (1/10) - extending timeout to 5h for aarch64-linux seems to be sufficient when using qemu-aarch64 * 2014.02 release preparation: (4/10) - branch merge - backported new vectorizer cost model (cheap, dynamic, unlimited), and ran some benchmarks. - asked Kugan to check the few improvements observed when using -fvect-cost-model=unlimited - reviewed Crypto intrinsics backport from Michael Collison. Discussed the use of gerrit+jenkins with him and Rob. - Charles ran the validation of the Crypto intrinsics backport on AArch64 hardware - I cross-validated it using binutils-linaro-2.24-2013.12, to make sure we release components capable enough to interoperate. - upgrading binutils in cbuildv1/tcwg-web would help, until we can switch to jenkins+cbuildv2+gerrit * Misc (2/10): conf-calls, meetings == Next == * libsanitizer on AArch64: post patch to LLVM list * crypto intrinsics: commit patch for 2014.02 release

12 years, 6 months

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[ACTIVITY] 3 - 7 Feburary 2014

by Omair Javaid

== Progress == * Short week: Public holiday on Wednesday 5th Feburary 2014. [2/10] * Ran gdb testsuites for arm and x86 (native + remote) with all in progress patches applied. [1/10] * Investigated and triaged arm only failures. [2/10] * Investigated gdb.dwarf2/implptr-64bit.exp failure and submitted patch to disable it for 32-bit targets.[2/10] * Installation and configuration of new desktop machine. [1/10] * Investigation of stack unwinding failures on arm. [1/10] * Investigation of work required to implement record and replay on aarch64. [1/10] == Plan == * Setup gdb for aarch64 and try to run a demo application. * Investigate remaining arm only failures in gdb for arm and work towards closeout of CARD-321. * Travel to Islamabad to receive passport back from Chinese embassy for Macau visa.

12 years, 6 months

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[ACTIVITY] February 3-9

by Maxim Kuvyrkov

== Week of February 3rd == - Various administrative bits and account setup. (6/10) - Worked my way through to getting access to LAVA board lab. Tried to reproduce performance regression on STREAM benchmark. (2/10) - Public holiday. (2/10) == Week of February 10th == - Continue account setup. Get work environment up. - Get to know the team. - Continue investigation of STREAM benchmark. -- Maxim Kuvyrkov www.linaro.org

12 years, 6 months

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[ACTIVITY] Week 05 & 06

by Zhenqiang Chen

== Issues == * None == Progress == * Jan. 31 - Feb. 6: Chinese Spring Festival holidays . * Test codes to duplicate shared compares to get more conditional compares. But still get unexpected bootstrap fail on Chrome book. * Test codes to enable shrink-wrap for TARGET_APCS_FRAME. * Update patch for PR 59837. * Create a reference linaro-arm-linux-gnueabihf-raspbian build . == Plans == * Tuning ccmp performance * Enable shrink-wrap for TARGET_APCS_FRAME.

12 years, 6 months

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[ACTIVITY] 3 -7 February 2014

by Kugan

== Progress == - Started implementing TARGET_ATOMIC_ASSIGN_EXPAND_FENV (5/10) - Regression testing with the implementation; found some issues and discussed with Matt - Working on fixing them - Patch for Vectorizer generates unaligned access when -mno-unaligned-access committed upstream (2/10) - This also triggered some regression with ARMv5 and looking into them (2/10) - Set-up qemu aarch64 for gcc testing (1/10) == Plan == - Check ARMv5 regression for unaligned access - Look into vectorizer cost model/benchmarking

12 years, 6 months

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Yocto Build of Toolchain with package tool rpm doesn't like the "dash" in the Release

by Gary Hannon

This is an attempt to build TI mcsdk 3.0.3.15 with bitbake tisdk-server-rootfs-image It fails trying to make rpms for the linaro toolchain. | DEBUG: Python function write_specfile finished | DEBUG: Executing shell function BUILDSPEC | error: line 4: invalid tag value("^[A-Za-z0-9+._]+$") Release: Release: r2-arago3 | error: Package has no %description: external-linaro-toolchain-2.15.armv7ahf_vfp_neon | Building target platforms: armv7ahf_vfp_neon-oe-linux-gnueabi | DEBUG: Python function do_package_rpm finished | DEBUG: Python function do_package_write_rpm finished | ERROR: Function failed: BUILDSPEC (see /home2/ghannon/keyDSP/build/mcsdk/build/arago-tmp-external-linaro-toolch ain/work/armv7ahf-vfp-neon-oe-linux-gnueabi/external-linaro-toolchain-20 13.03-r2-arago3/temp/log.do_package_write_rpm.8491 for further information) ERROR: Task 40 (/home2/ghannon/keyDSP/build/mcsdk/sources/meta-linaro/recipes-devtools/ external-linaro-toolchain/external-linaro-toolchain.bb, do_package_write_rpm) failed with exit code '1' If I change Release: r2-arago3 to not have a - in the spec file then I can build the rpms manually with the same command. Is there a place where I can change that globally? Gary Hannon Sr. Software Engineer CSP Inc. 43 Manning Road Billerica, MA 01821 978-663-7598 x1509 ghannon(a)cspi.com

12 years, 6 months

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[ACTIVITY] Week 6

by Renato Golin

== Progress == * IAS - Having a go at .dn/.qn aliases - Some Dwarf 2/3 discussions, kernel build flags, etc * EHABI - Tables being generated even when no EH in C - Will need some tinkering in Clang and LLVM - Huge discussion about EHABI, Dwarf unwinding and exception tables - Starting the refactory of EHABI to cope with the differences * Compiler-RT - Finding the best way to use compiler-RT with Clang (not an easy task!) * Background - Usual patch reviews & discussions - Mapping AArch64 features implemented for Connect session - Playing with the Calxedas for some benchmarks * Time - CARD-862 8/10 - Others 2/10 == Plan == * Continue with EHABI refactoring * Implement --rtlib in Clang for compiler-rt usage * Continue .dn/.qn implementation

12 years, 6 months

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[ACTIVITY] 3 -7 February 2014

by Will Newton

== Progress == * 3 day week * Further work on longjmp/setjmp Systemtap probes on ARM (1/10, TCWG-378) * Research and analysis of malloc workloads for benchmarking (5/10, TCWG-160) == Issues == * None == Plan == * More work on an application level malloc benchmark framework * Resurrect glibc benchmark graphing script * newlib release * gdb 7.7 release (build an rc to troubleshoot releasing from git) -- Will Newton Toolchain Working Group, Linaro

12 years, 6 months

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kernel support for cortex A8 hardware watchpoints

by Marc Kleine-Budde

Hello Ulrich, I'm on a freescale mx53 (single core, cortex a8) and trying to find a nasty problem in our $CUSTOMER's application. Working hardware watch point support in gdb should solve the problem, or at least brings us a big step forward. I stumbled over your about three years old thread[1] about the cortex a8 memory mapped debug registers problem. Do I understand correctly, that you had a8 watch point running on at least one board? Have you got any code and or pointers to get watch point support running? regards, Marc Kleine-Budde [1] http://lists.linaro.org/pipermail/linaro-toolchain/2011-February/000820.html -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |

12 years, 6 months

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