- linaro-toolchain - lists.linaro.org

[ACTIVITY] 02 - 06 May 2016

by Peter Smith

* Monday off [2/10] # Progress # * TCWG-468, ldr rt, =immediate Have a feature complete implementation. Passes existing regression tests. Still need to add more tests for new functionality and see if implementation can be tidied up a bit * Setting up a local chromebook to run the regression-tests. Should now be able to run test suite on ARM relatively easily. # Plan # * Complete TCWG-468 and send upstream for review. * Pick something else up.

9 years, 3 months

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[ACTIVITY] 02 - 06 May 2016

by Yao Qi

* Monday off [2/10] # Progress # * TCWG-518, arm linux range stepping patches. [5/10] Tried different ways to manage breakpoints, but the program still gets SIGILL from time to time. Post my WIP patches upstream to see if people have some ideas on this. * TCWG-547, [1/10]. Try two approaches but give up due to the quite aggressive interface changes. Fortunately, the change in the third approach is quite small, testing the patch. * Misc, meeting, [2/10] # Plan # * TCWG-518, TCWG-547 -- Yao

9 years, 3 months

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[ACTIVITY] 18 - 22 April 2016

by Kugan

== Progress == * GCC Stage-1 (5/10) - Posted patches and revised based on review - PR40921 and PR63586 - Getting ready post type promotion pass again * Linaro bug (2/10) - BUG 2195 and BIG 1979 - Investigation with trunk and educed test case shows Missing commit * Misc (1/10) - GCC Lists * Public holiday (2/10) == Plan == * Attend to pending stage1 patches

9 years, 3 months

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[Weekly] 25-29 April 2016

by Michael Collison

== This week == * Bugzilla 69663 - [ARM] Implement overflow arithmetic standard names (0/10) - Pinged upstream; no response yet * Bugzilla 70089 - ARM/THUMB unnecessarily typecasts some rvalues on memory store (6/10) - Created updated patch that resolves 8/9 failures - Investigating execution failure on gcc.dg/fixed-point/convert-sat.c * TCWG-247 - Create Validation Job to run on GCC Trunk Commit (3/10) - Addressed all comments from code reviews and submitted final version * Misc (1/10) - Meetings == Next week == * Bugzilla 70089 - ARM/THUMB unnecessarily typecasts some rvalues on memory store - Resolve testsuite failure * Bugzilla 69663 - [ARM] Implement overflow arithmetic standard names (0/10) - Ping upstream

9 years, 3 months

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[ACTIVITY] Week 17

by Yvan Roux

o 1 day off (2/10) == Progress == o Extended validation (2/10) * Extended validation now operational, reporting enhancements investigations. * Looked at gdb/guality unstable results. * Reviewed some jobs. o Linaro GCC (2/10) * Scripted new Linaro development branch process. o Upstream GCC (1/10) * Digging in libatomic code. o Misc (3/10) * Various meetings and discussions. == Plan == o 2 days off (Thu/Fri) o Continue on validation and upstream work.

9 years, 3 months

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[ACTIVITY] 25-29 April 2016

by Prathamesh Kulkarni

== This Week == * LTO (6/10) a) TCWG-128 (1/10) - committed patch for adding param lto-max-partition, which can now be used as workaround for building chromium with minimal number of required partitions. - committed patch for setting default value of lto-min-partition to 10000. b) TCWG-528 (1/10) - Patch: http://people.linaro.org/~prathamesh.kulkarni/patch_increase_alignment.diff - Cross tested on arm*-*-*, aarch64*-*-* and bootstrapped and tested on aarch64-linux-gnu - I want to cross test once for ppc64 since that's also affected. c) TCWG-548 (4/10) - Patch: http://people.linaro.org/~prathamesh.kulkarni/patch-vars-3.diff - Cross tested for arm*-*-* and aarch64*-*-* * TCWG-319 (2/10) - Comparing diff's of vect for arm and armeb shows, armeb not supporting unaligned access - Looking thru arm backend code to see why this happens. * Validation (1/10) - Script to build chromium * Misc (1/10) - Looked at PR70848, PR60172 - Meetings == Next Week == LTO: section anchors, increase_alignment pass TCWG-319: Continue investigation Validation: Try to get the script merged to tcwg-buildapp repo.

9 years, 3 months

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[ACTIVITY] 25 - 29 April 2016

by Peter Smith

# Progress # * TCWG-466, ADRL pseudo instruction support in integrated assembler. I couldn't find a way of putting ADRL into the assembler in a maintainable way. Managed to work out a pretty close approximation of ADRL in a macro so I added it to upstream PR. Put the results of the my investigations into TCWG-466. Agreed with Renato's initial diagnosis of won't fix. * TCWG-468, Transform LDR rn, =expr pseudo instruction into MOV. I'm more hopeful with this one. I've got a prototype that delays the emission of the constant pool entry to a point where the transformation can occur. * Try out the build and push scripts. Had a frustrating day of chasing down missing dependencies from my Ubuntu 12.04 machine while building lldb. Should be resolved now. # Plan # * UK national holiday on Monday. * Continue with TCWG-468. I've got a tablegen prototype that treats LDR rd,= as a real pseudo instruction. Need to finish Thumb and Thumb2. Next step after that is to do the transformation to MOV. * Will spend any other time investigating LLD

9 years, 3 months

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[ACTIVITY] 25 - 29 April 2016

by Yao Qi

# Progress # * TCWG-518, range stepping on arm-linux. Rebase my patches, and choose a different approach which is better. However, GDBserver crashes in some cases, and I am investigating the crash. [5/10] * TCWG-547, make some progress on the upstream discussion. We agree to do it in a cleaner way but some GDB internal interface needs some changes. [2/10] * Read some articles about exception handling, this one is quite useful, https://gcc.gnu.org/ml/gcc/2002-07/msg00391.html [1/10] * Meeting, upstream patch review. [2/10] # Plan # * TCWG-518, TCWG-547 -- Yao

9 years, 3 months

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[ACTIVITY] 25-29 April 2016

by Diana Picus

== Progress == * Rework LLVM helper scripts [TCWG-571] [4/10] - Code review + minor improvements to the scripts - Started a discussion about the interfaces of some of the scripts (llvm-projs, llvm-sync) * Inline assembly constraints support for ARM [TCWG-560] [3/10] - More investigations for PR24071 - Discovered that the assert is only triggered for aarch64-linux-gnueabi, whereas arm-linux-gnueabi behaves as expected (prints the error but doesn't assert afterwards). This has proven useful for figuring out the intended behavior of the code. * Move buildbots to CMake 3.4.3 [TCWG-573] [1/10] - Helped move some of the bots (llvm-a15-*) to CMake 3.4.3 * Misc [2/10] - Buildbot monitoring - Meetings == Plan == * Inline assembly constraints support for ARM [TCWG-560] - Come up with a fix for PR24071 * Rework LLVM helper scripts [TCWG-571] - Start a review for the new interface to llvm-projs/llvm-sync, so we can have some concrete support for further discussion - Investigate git worktree and how it could be factored into our scripts (llvm-projs, llvm-build) * Move buildbots to CMake 3.4.3 [TCWG-573] - Help with the llvm-chrome-* bots if necessary * OOO on Monday

9 years, 3 months

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[ACTIVITY] 25-29 April 2016

by Christophe Lyon

== Progress == * Validation - armvl8 differences between master and stable branches understood (master defaulted to Thumb) - updated ABE stable branch for validation - ABE now uses linaro-local/stable DejaGnu branch - updated ABE legacy version to use this DJ branch too, and updated the Foundation Model path - updated Jenkins jobs accordingly * Backports - created a few backports for our gcc-5 branch, to prepare handover - slight documentation update * GCC - enhancements to validation harnesses to better handle infrastructure problems - using monitoring and regressions reports * Cortex-strings - updated a few aarch64 mem* routines from newlib versions * Support - finally reproduced the Windows-hosted toolchain bugs by rebuilding in a properly updated Jessie chroot. - building the next release in Trusty container should fix these problems * Misc (confi-calls, meetings, emails, ....) == Next == * Validation: cleanup & reviews * GCC - trunk monitoring, report regressions if needed - more intrinsics tests

9 years, 3 months

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RE: [ACTIVITY] 18-22 April 2016

by Rob Savoye

As a note, all the builders we use for binary releases run Trusty still. I haven't tried Jessie (should work fine),but I know that newer Mingw releases fail to compile GCC 5.x. - rob - -------- Original message -------- From: Christophe Lyon <christophe.lyon(a)linaro.org> Date: 04/22/2016 14:00 (GMT-07:00) To: Linaro Toolchain Mailman List <linaro-toolchain(a)lists.linaro.org> Subject: [ACTIVITY] 18-22 April 2016 * 3 days off == Progress == * Validation: - fixed ABE master and stable branches to use 'ssh -t' instead of 'ssh -tt' when cross-testing - trying to assert master vs stable before the array branch merge, noticed differences on armv8l - created linaro-local/stable Dejagnu branch (currently a copy of master). Prepared ABE config patches to use it. * GCC - infrastructure problems (ST compute farm), leading to a lot of noise in the validations (and wrong regression reports upstream) - enabled gcc-6-branch monitoring - added GCC-6 tab to the backports spreadsheet * Support - Windows-hosted toolchain crashes: it seems the builders we use to make the release run Jessie and not Trusty. Tried to rebuild a toolchain in a Jessie chroot, but the script failed (works under Trusty) * Misc (conf-calls, meetings, emails, ...) == Next == * Validation - check that using linaro-local/stable Dejagnu branch works well - create validation reference points before array branch merge - understand/fix armv8l validation differences between master/stable ABE branches * GCC - trunk monitoring, report regressions if needed - more intrinsics tests * Support - Windows-hosted toolchain bug * Snapshots - prepare a few backports for our gcc-5 branch * Cortex-strings update _______________________________________________ linaro-toolchain mailing list linaro-toolchain(a)lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-toolchain

9 years, 3 months

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[ACTIVITY] 18 - 22 April 2016

by Omair Javaid

== Progress == LLDB Chromebook Test Stability [TCWG-563] [3/10] -- Failures reduced to 15 fails and 4 errors after fixing stepping bug. -- Investigated remaining issues some of them are known issues and others will need further investigation. LLDB ARM Thread Stepping Problem [TCWG-566] [5/10] -- Problems caused because incorrect reporting of PLT entry size set by linker. -- Submitted a fix after analysis that logical size of PLT entry should be greater than 4bytes. -- Fix accepted and committed upstream. LLDB Buildbot Setup [TCWG-241] [1/10] -- Random change in results finally caught. It was due to inconsistent network. -- Progress halted to fix arm-linux-gnueabihf bugs. Miscellaneous [1/10] -- Meetings, emails, discussions etc. == Plan == LLDB Chromebook Test Stability [TCWG-563] -- Continue to resolve and investigate chromebook test failures. LLDB Buildbot Setup [TCWG-241] -- Start AArch64 tester evaluations.

9 years, 3 months

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[ACTIVITY] Week 16

by Peter Smith

Progress: - On holiday all week, at ACCU conference. I've put some highlights at the end of the message. - Did some more investigation into TCWG-466 ADRL support in integrated assembler during breaks. -- Not looking good, to do this properly bumps up against a lot of design decisions and restrictions made by the LLVM assembler (designed as compiler target, not to be user friendly). -- There are ways it could be implemented with restrictions, but it is debateable whether it is worth doing at all. -- On the plus side I've got a much better idea of how the assembler works and what restrictions exist on each stage of the journey from a line in the .s file to emission in the object. Will add some comments to the LDR r0, =expr TCWG as well. -- On the negative side the :upper16: and :lower16: operators for MOVT and MOVW don't look to be correct in the presence of addends. Will need to investigate further to see what the scope of the problem is. Plan: - Dump results of TCWG-466 investigation into Jira. - Take a look at and post a comment on Adhemerval's revised TLS patch, even if it is just looks fine in the hope of pushing it forward a bit more. - Catch up with Renato's scripts and documents for LLVM sub-group. - Work out what to do with TCWG-466, if the answer is put it down, find something else to look at. ACCU Highlights/Report: Tough stuff in modern C++ A deep dive into some of the newer areas of C++ such as: - rvalue references and forwarding (universal) references - How to use SFINAE (mostly std::enable_if) to select algorithms optimised for particular template instantiations - Variadic templates. Including all sorts of strange ways to (ab)use expansion of parameter packs. C++ WG21 SG14 Gaming and low-latency study group - A new study group aiming to represent the gaming (primarily), but also embedded and high frequency trading concerns. - Motto seemed to be make sure "Don't pay for what you don't use" is enforced. Most interested in: -- No exceptions configurations -- No RTTI -- More performance out of the STL (see EA STL https://github.com/electronicarts/EASTL) -- Add ring buffers and support for unitialised memory, fixed point numbers, flat-map, standardised simd vector types Using sentinels - An example of how using two sentinels in an implementation of std::partion speeds up the algorithm by saving comparisons. Can speed up quicksort by a few percent Constexpr in C++14 - Example showing how you could build a string to enum map, operating entirely at compile time, and its subsequent negative effects on compile time! Concepts Lite - Concepts missed the C++17 standard, this presentation went into the current Technical Standard (optional) and how concepts would likely be implemented in C++(20?) - Not surprising to see that concepts still missed C++17 as there is only one implementation and one non-trivial use case (ranges) and there are still unresolved questions to be answered. Introduction to Julia - Really a comparison of Julia to the author's favoured language of common lisp. - Was impressed at how "lispy" Julia was whilst retaining high performance. - Liked the mathematical syntax - Didn't like the python like parts that seemed to be added to try and get people to migrate from python, but were non "lispy".

9 years, 3 months

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[ACTIVITY] 18 - 22 April 2016

by Yao Qi

# Progress # * TCWG-545, patches are committed. Done. [3/10] * TCWG-167, ARM reverse debugging bug fixes. All test fails are fixed. Done. [2/10]. * PR 19947. The fix is approved, but the patch triggering the bug needs update. [2/10] * Help to fix broken ARM GDB after C++ switch. [2/10]. GDB mainline is a C++ program in default. Exception handling in GDB is broken on non-x86 host (ARM, AArch64, AIX, at least) because readline (C library) calls C++ GDB code, but exception unwinding can't cross the C function ("foreign frame"). The problem is fixed by catching all exceptions before return to readline, and re-throw them after return from readline back to GDB. * Misc, [1/10] ** Hack QEMU so that I can run gdb regression testsuite with qemu-arm. # Plan # * TCWG-518, rebase patches on mainline, test, and post patches if nothing wrong. * PR 19947, TCWG-561, * TCWG-547 -- Yao

9 years, 3 months

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[ACTIVITY] Week 16

by Yvan Roux

== Progress == o Extended validation (5/10) * Created new extend validation job which handles native/cross validation and benchmarking. * Identified and discussed dejagnu Linaro branch issue. o Upstream GCC (2/10) * Start to look at libatomic ARMv8.1 support o Misc (3/10) * Various meetings * Support team members on benchmarking and validation. == Plan == o Continue on extended validation and Libatomic

9 years, 3 months

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[ACTIVITY] 18 - 22 April 2016

by Prathamesh Kulkarni

== This Week == * LTO (5/10) a) Section anchors - another wasted prototype: http://pastebin.com/5MXFqrZY - will follow Richard's suggestion to put variable in partition that references it most, we can make this smarter incrementally if required. b) Retested patch for lto-max-partition c) Retested increase_alignment pass patch and wrote test cases for it. * Validation (2/10) a) Script to build chromium - works with armhf (with assumptions about my environment) - issues with gclient sync failure which in turn does not generate LASTCHANGE file causing build to fail. * Public Holiday (2/10) - Mahavir Jayanti * Misc (1/10) - Meetings == Next Week == - LTO: section anchors, post patches upstream for lto-max-partition and increase_alignment. - TCWG-319: Look at why armeb is failing to vectorize test-cases. - Validation: chromium

9 years, 3 months

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[Weekly] 18-22 April 2016

by Michael Collison

== This week == * Bugzilla 67321 - [ARM] Exploit Wide Add operations when appropriate (1) - Re-based to GCC 6, re-validated and committed upstream * Bugzilla 70008 - [ARM] Reverse subtract with carry can be generated in thumb2 mode (1) - Re-based and re-validated - Need to create new bug as problem description does not match issue * Bugzilla 70089 - ARM/THUMB unnecessarily typecasts some rvalues on memory store (3/10) - Developed new patch for arm that detects failures with negative numbers - Debugging failures where constant is too large * TCWG-247 - Create Validation Job to run on GCC Trunk Commit (3/10) - Fleshed out additional portions of script and submitted for code review - Still issues to be resolved in script as noted in git review * Misc (2/10) - Meetings - Multiple interactions with ARM IT to configure and setup new laptop == Next week == * TCWG-247 - Finish script * Bugzilla 70089 - ARM/THUMB unnecessarily typecasts some rvalues on memory store - Finalize arm patch and validate * Bugzilla 70008 - create new bug and submit upstream patch

9 years, 3 months

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[ACTIVITY] 18-22 April 2016

by Christophe Lyon

* 3 days off == Progress == * Validation: - fixed ABE master and stable branches to use 'ssh -t' instead of 'ssh -tt' when cross-testing - trying to assert master vs stable before the array branch merge, noticed differences on armv8l - created linaro-local/stable Dejagnu branch (currently a copy of master). Prepared ABE config patches to use it. * GCC - infrastructure problems (ST compute farm), leading to a lot of noise in the validations (and wrong regression reports upstream) - enabled gcc-6-branch monitoring - added GCC-6 tab to the backports spreadsheet * Support - Windows-hosted toolchain crashes: it seems the builders we use to make the release run Jessie and not Trusty. Tried to rebuild a toolchain in a Jessie chroot, but the script failed (works under Trusty) * Misc (conf-calls, meetings, emails, ...) == Next == * Validation - check that using linaro-local/stable Dejagnu branch works well - create validation reference points before array branch merge - understand/fix armv8l validation differences between master/stable ABE branches * GCC - trunk monitoring, report regressions if needed - more intrinsics tests * Support - Windows-hosted toolchain bug * Snapshots - prepare a few backports for our gcc-5 branch * Cortex-strings update

9 years, 4 months

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[ACTIVITY] 18-22 April 2016

by Diana Picus

== Progress == * Inline assembly constraints support for ARM [TCWG-560] [1/10] - Started investigating Bug24071 * Intro to LLVM buildbots [1/10] - Got accustomed to the buildbot monitoring page - Learned how to connect to the bots/perform really basic maintenance * Misc [8/10] - Onboarding checklists, policies, meetings etc [6/10] - Laptop setup [2/10] == Plan == * Inline assembly constraints support for ARM [TCWG-560] - More investigations for Bug24071 * Misc - Finish reading Octopus policies - Review scripts for working with LLVM

9 years, 4 months

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Cross compilation issue

by $rik＠nth

Hi All, I don't whether this is the right community mailing list to post support or not. Please correct me if i am wrong. I am trying to cross compile gcc to ARM as static binaries and as part of this, i am facing below issue. My build system is Ubuntu and using [1] gcc branch. Let me know what i can share more information to you. arm-linux-gnueabi-g++ -static -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -DHAVE_CONFIG_H -static-libstdc++ -static-libgcc -static -pthread -o xgcc gcc.o ggc-none.o \ c/gccspec.o libcommon-target.a \ libcommon.a ../libcpp/libcpp.a ../libbacktrace/.libs/libbacktrace.a ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a gcc.o:(.rodata+0x5acc): undefined reference to `host_detect_local_cpu(int, char const**)' collect2: error: ld returned 1 exit status make[2]: *** [xgcc] Error 1 [1] svn://gcc.gnu.org/svn/gcc/branches/linaro/gcc-4_8-branch -- Thanks & Regards, M.Srikanth Kumar.

9 years, 4 months

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[ACTIVITY] 11 - 15 April 2016

by Omair Javaid

== Progress == LLDB Buildbot Setup [TCWG-241] [1/10] -- Created a new factory for LLDB buildbots. Halted plan to migrate till turning chromebook build green. LLDB Chromebook Test Stability [TCWG-563] [3/10] -- Investigated some failures some of them were fixed by a systemZ support large patch set. -- Failures reduced to 36 locally with some tweaks. Buildbot still showing random results. LLDB ARM Thread Stepping Problem [TCWG-566] [5/10] -- Only happening on Arm linux targets. -- Spent good bit of time debugging this issue. There are multiple problems but root cause is same. -- Initial investigation reveals frame unwinding issues from .plt section. Miscellaneous [1/10] -- Meetings, emails, discussions etc. == Plan == LLDB ARM Thread Stepping Problem [TCWG-566] -- Further debugging and investigation of this issue. -- Figure out a fix for stepping problem on arm linux.

9 years, 4 months

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[ACTIVITY] Week 15

by Yvan Roux

== Progress == o GCC 2016.04 source snapshot (4/10) * Reviewed on-going backports * Merged from FSF GCC 5 branch * Packaged and released snaphot o Extended validation (3/10) * Native validation identifies upstream issues - Fixed Glibc warnings raised by GCC 6, committed in Glibc master * Looking at bkk16 job switch to multijob.. o Misc (3/10) * Various meetings == Plan == o Continue on extended validation o GCC ARMv8.1 builtins fix.

9 years, 4 months

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[Weekly] 11-15 April 2016

by Michael Collison

== This week == * Bugzilla 70089 - ARM/THUMB unnecessarily typecasts some rvalues on memory store (1/10) - Arm backend is not recognizing that some constants can be encoded using modified immediate - This is causing constant to be split and additional code generated - Range of constants allowed differs between Arm and Thumb2 - Created prototype patch to allow additional ARM modified immediate instructions - Began work on Thumb2 patch * TCWG-247 - Create Validation Job to run on GCC Trunk Commit (2/10) - Developed shell portion of script to read and parse web page with builder information - Developing rest of yaml script including trigger on specified interval * Misc meeting (1/10) * Vacation (6/10) - April 11 - 13 == Next week == * TCWG-247 - Finish script * Bugzilla 70089 - ARM/THUMB unnecessarily typecasts some rvalues on memory store - Finalize arm patch and validate - Make progress on Thumb2 patch

9 years, 4 months

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[ACTIVITY] 11-15 April 2016

by Prathamesh Kulkarni

== This Week == * LTO (5/10) a) Section anchors: - 3 iterations of prototype patch - Validated with testsuite and chromium LTO build - Submitted prototype patch upstream: https://gcc.gnu.org/ml/gcc/2016-04/msg00090.html * Bugs (1/10) - Looked at bugs 2073 and 2174 * Public Holidays (4/10) - Dr Ambedkar Jayanti and Ram Navami == Next Week == - LTO: section anchors, benchmarking - Validation: chromium

9 years, 4 months

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[ACTIVITY]

by Renato Golin

== Progress == * Support (2/10) - Closing some inline asm constraint bugs that were fixed or user error - Finished PR16275 * Background (8/10) - Code review, meetings, discussions, general support, etc. - Lost track of how many meetings and email threads I had - Mostly about helping newcomers, managing Android/LLDB/LLD expectations - Also hardware planning, LLVMLinux revival, checking Swift

9 years, 4 months

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[ACTIVITY] 11 - 15 April 2016

by Peter Smith

Progress: - Read up on AARCH64 TLS and LLD code base - Commented on upstream patch in hope of getting approval from the code-owners - TCWG-466 Implement ADRL pseudo in LLVM assembler -- Slow progress as the pseudo instruction does not fit well into the existing architecture -- On the positive side I have learned quite a bit about how the LLVM assembler works -- Will make a decision next week whether it is worth actively pursuing TCWG-466. Supporting ADRL is not high priority and whatever fix I come up with may be difficult to get accepted upstream. I'd still like to keep trying, at least as a background task, but I think that there is higher priority work that can be done instead. Next Week: On holiday (hopefully added correctly to Linaro google calendar). I'll be at the ACCU conference.

9 years, 4 months

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[ACTIVITY] 11-15 April 2016

by Christophe Lyon

== Progress == * Validation - finally identified what caused several random results: use of 'ssh -tt' to acces the remote tester. I don't know the real cause. * GCC - reported a few regressions in trunk - a few backports - AdvSIMD intrinsics tests: built the list of AArch64 intrinsics not yet covered - support on a few bug reports * Misc (conf-calls, meetings, emails, ....) == Next == * Holidays Mon/Tue/Wed * Validation - consolidation on stdout/stderr problems - extended validation * GCC: - trunk monitoring, report regressions if needed - start monitoring the just-created gcc-6 branch - more intrinsics tests - switch backport activity to gcc-6 branch, update tools, etc...

9 years, 4 months

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[ACTIVITY] 11 - 15 April 2016

by Yao Qi

# Progress # * TCWG-545, 7 patches are approved, and 1 patch needs update, which needs the change somewhere else. [3/10] * TCWG-547, patch is pending. Pinged Pedro on IRC, to be reviewed, but no response. * TCWG-167, [3/10]. ARM reverse debugging fixes. Post one patch to fix test case. Testing another patch to give high priority of epilogue unwinder. * Upstream patch review, [2/10]. Spend more time on this due to long patch review backlog. The more I reviewed, the sooner my patches will be reviewed by others. * Misc, [2/10] ** Look at the slowness of gdb regression test in jekins validation, but can't reproduce it. ** Share some knowledge of watchpoint implementation in GDB to the people, who need the equivalent or similar things in LLDB. # Plan # * TCWG-545, TCWG-547, TCWG-167. -- Yao

9 years, 4 months

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[ANNOUNCE] Linaro GCC 5 2016.04 snapshot

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2016.04 snapshot of the Linaro GCC 5 source package. This monthly snapshot[1] is based on FSF GCC 5.3+svn234898 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the 2016.05 stable [1] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.04/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 5.3+svn234898 * Backport of [Bugfix] [AArch32] Fix PR target/70496 * Backport of [Bugfix] [AArch32] PR driver/70132: Avoid double fclose in driver-arm.c * Backport of [Bugfix] [AArch32] PR rtl-optimization/69904: Disallow copying/duplicating of load-exclusive operations * Backport of [Bugfix] [AArch32] PR target/62254 Fix for ARMv3 * Backport of [Bugfix] [AArch32] PR target/69614 * Backport of [Bugfix] [AArch32] PR target/70566 Check that condition register is dead in tst-imm -> lsls-imm Thumb2 peepholes * Backport of [Bugfix] [AArch32] PR testsuite/70553 * Backport of [Bugfix] [AArch64] PR rtl-optimization/70398 LRA * Backport of [Bugfix] PR 69400: Invalid 128-bit modulus result * Backport of [Bugfix] PR middle-end/70370 * Backport of [AArch32] 1/2 Cortex-R8 support * Backport of [AArch32] Add initial support for the Cortex-A32 * Backport of [AArch32] Add support for Cortex-A35 * Backport of [AArch32] Delete ASM_OUTPUT_DEF and fall back to default .set directive * Backport of [AArch64] 1/3 Enable CRC by default for armv8.1-a * Backport of [AArch64] 2/3 Rework the code to print extension strings (pr70133) * Backport of [AArch64] 3/3 Fix up for pr70133 * Backport of [AArch64] [ACLE][NEON] Implement vcvt*_s64_f64 and vcvt*_u64_f64 NEON intrinsics * Backport of [AArch64] Add extra tuning parameters for target processors * Backport of [AArch64] Add support for Cortex-A35 * Backport of [AArch64] Only update assembler .arch directive when necessary * Backport of [Testsuite] [AArch32] 2/2 Cortex-R8 support * Backport of [Testsuite] [AArch64] PR target/70113 fix pr63304_1 testcase * Backport of [Testsuite] [AArch64] Skip gcc.target/aarch64/assembler_arch_1.c if assembler does not support it * Backport of [Testsuite] Avoid GDB being blocked on signals * Backport of [Testsuite] Fix testsuite for Cortex-R8 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@ * Bug reports should be filed in bugzilla against GCC product: http://bugs.linaro.org/enter_bug.cgi?product=GCC * Interested in commercial support? inquire at "Linaro support": mailto:support@linaro.org [1]. Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed. [2]. Source package snapshots are defined when the compiler is only put through unit-testing and full validation is not performed.

9 years, 4 months

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[ACTIVITY] 4 - 8 April 2016

by kugan

== Progress == * Type promotion pass (2/10) - Benchmarking * LTO (7/10) - Refactoring tree-vrp to share common parts - Looking at open enhancement bugzilla and working on them * Misc (1/10) - GCC Lists == Plan == * LTO and VRP

9 years, 4 months

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[ACTIVITY] 4 - 8 April 2016

by Omair Javaid

== Progress == LLDB Buildbot Setup [TCWG-241] [9/10] -- Migration of local master/slave setup to Linaro LLVM lab. -- Setup slave to be able to connect to chromebook for lldb remote testing. -- Modified Android build scripts to work with chromebook in llvm lab. Miscellaneous [1/10] -- Meetings, emails, discussions etc. == Plan == LLDB Buildbot Setup [TCWG-241] -- Write a new factory for linux based lldb script commands -- Break down and tweak scripts with better logical steps. -- Migrate current setup to use new factory. LLDB development [TCWG-563] -- Look into failing tests on chromebook tester and see if some of them can be fixed.

9 years, 4 months

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[ACTIVITY] Week 14

by Yvan Roux

== Progress == o Extended validation (5/10) * Dejagnu remote layout patch finalized and committed upstream (will be part of the coming 1.6 Dejagnu release) * GCC guality test fix committed in trunk. * Native armv8l validation unblocked, but still slow (more than 8hrs) Analysis on-going. * Start to work on enhancement: include cross validation and benchmark trigger. o Misc (5/10) * Lot of meetings (Internal, training, Benchmarking, ...) == Plan == o Monthly snaphsot (review backports, branch merge) o Continue on extended validation o GCC ARMv8.1 builtins fix.

9 years, 4 months

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[ACTIVITY] 4 - 8 April 2016

by Prathamesh Kulkarni

== This Week == * LTO (6/10) a) tcwg-128: branch out of range error - Addressing upstream reviews - Patch needs approval from Honza b) section-anchors - Understanding balanced partitioning algorithm - Working on 2nd prototype: http://people.linaro.org/~prathamesh.kulkarni/section-anchors-1.diff - Looking at regressions caused due to patch: http://people.linaro.org/~prathamesh.kulkarni/section-anchors-1-compare-res… c) submitted patch to slightly refactor lto_balanced_map: - https://gcc.gnu.org/ml/gcc-patches/2016-04/msg00341.html d) tcwg-534: ipa-comdats - found why ICE happens e) ipa-vrp - Discussions with Kugan * Validation (1/10) - Passing -static-libstdc++ works to build chromium without using chromium's sysroot. - Review 11311 - Untested script to build chromium for arm, x86: http://people.linaro.org/~prathamesh.kulkarni/build-chromium.sh * Public Holiday (2/10) * Misc (1/10) - Meetings == Next Week == - LTO: section anchors - Validation

9 years, 4 months

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[ACTIVITY] for week ending 8th April 2016

by Peter Smith

== Progress == Transition week into Linaro toolchain group from ARM to replace Bernie [*] - Some ARM handover work done. - Started looking into https://llvm.org/bugs/show_bug.cgi?id=24350 (TCWG-466 ADRL support) -- Checked behaviour of ADRL on armasm and GNU as -- Worked out what I need to do in LLVM to make ADRL work, looks like nothing hugely complicated but a lot of plumbing through various layers. - Started reading about AArch64 TLS descriptor implementation. I'm familiar with the AArch32 traditional model so I need to bridge the gap a bit. == Plans == - Post some review comments on Adhemeval's TLS patch with the hope of unblocking it. - Start implementing support for ADRL in the integrated assembler == Planned Absences == Holiday 18th - 22nd April (Attending ACCU conference in Bristol). I think I've put that in the shared holiday calendar correctly. [*] Hello to everyone I didn't manage to meet at Linaro Connect. I've been working in ARM's proprietary compiler team, with much of that time spent on armlink and the other non-compiler tools.

9 years, 4 months

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[ACTIVITY]

by Renato Golin

== Progress == * Support (2/10) - Adding more tests to D18701, covering more cases - Investigating PR27250 (user error) * Buildbots (2/10) - More work around LLDB buildbots * Background (6/10) - Code review, meetings, discussions, general support, etc. - Android / AOSP discussions, meetings - Some lab planning, meetings - Helping newcomers, meetings

9 years, 4 months

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[ACTIVITY] 1 April -- 8 April

by Yao Qi

# Progress # * TCWG-167, ARM reverse debugging bug fixes. [4/10] Four patches are committed. All FAILs are fixed if test case is compiled with -fomit-frame-pointer. Some FAILs when -fno-omit-frame-pointer are caused by epilogue unwinder doesn't parse epilogue correctly if FP is involved. File TCWG-562 to track it. * TCWG-545, TCWG-547, patches are pending. Maintainer is busy on something else. * Triage the regression gdb.base/jit.exp. [1/10] We need a pending patch series to address this issue. Ask Pedro how to review them. * TCWG-561, handle unavailable memory during frame unwinding. [3/10] Think about it and write a prototype. * Misc, patches review and meeting, [2/10]. # Plan # * Take a look at the slow native arm-linux-gnueabihf gdb test. * TCWG-562, Tweak epilogue unwinder to handle FP. * TCWG-545, TCWG-547, ping. * TCWG-561, finish the prototype. -- Yao

9 years, 4 months

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Linaro toolchain: libstdc++.so: file format not recognized; treating as linker script

by Gunnar Arndt

My dear friends, I'm trying to build C++ code for Linux running on am ARM Cortex A8 (TI AM335x). For a first try, I'm using the simplest program I can think of: /* main.cpp */ int main() { return 0; } Under Linux with the 'normal' GCC, that works fine, but under Windows 7 with the Linaro toolchain, it fails with the following message: C:\firedect\dev\workspace\Test-Linux-ARM_1> "\Program Files (x86)\GNU Tools ARM Embedded\gcc-linaro-4.9-2016.02-i686-ming w32_arm-linux-gnueabi\bin\arm-linux-gnueabi-g++.exe" main.cpp c:/program files (x86)/gnu tools arm embedded/gcc-linaro-4.9-2016.02-i686-mingw32_arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabi/4.9.4/../../../../arm-linux-gnueabi/bin/ld.exe:c:/program files (x86)/gnu tools arm embedded/gcc-linaro-4.9-2016.02-i686-mingw32_arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabi/4.9.4/../../../../arm-linux-gnueabi/lib/libstdc++.so: file format not recognized; treating as linker script c:/program files (x86)/gnu tools arm embedded/gcc-linaro-4.9-2016.02-i686-mingw32_arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabi/4.9.4/../../../../arm-linux-gnueabi/bin/ld.exe:c:/program files (x86)/gnu tools arm embedded/gcc-linaro-4.9-2016.02-i686-mingw32_arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabi/4.9.4/../../../../arm-linux-gnueabi/lib/libstdc++.so:1: syntax error collect2.exe: error: ld returned 1 exit status C:\firedect\dev\workspace\Test-Linux-ARM_1> "\Program Files (x86)\GNU Tools ARM Embedded\gcc-linaro-5.3-2016.02-i686-ming w32_arm-linux-gnueabihf\bin\arm-linux-gnueabihf-g++.exe" main.cpp c:/program files (x86)/gnu tools arm embedded/gcc-linaro-5.3-2016.02-i686-mingw32_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/5.3.1/../../../../arm-linux-gnueabihf/bin/ld.exe:c:/program files (x86)/gnu tools arm embedded/gcc-linaro-5.3-2016.02-i686-mingw32_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/5.3.1/../../../../arm-linux-gnueabihf/lib/libstdc++.so: file format not recognized; treating as linker script c:/program files (x86)/gnu tools arm embedded/gcc-linaro-5.3-2016.02-i686-mingw32_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/5.3.1/../../../../arm-linux-gnueabihf/bin/ld.exe:c:/program files (x86)/gnu tools arm embedded/gcc-linaro-5.3-2016.02-i686-mingw32_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/5.3.1/../../../../arm-linux-gnueabihf/lib/libstdc++.so:1: syntax error collect2.exe: error: ld returned 1 exit status As you can see, I have tested two versions of the toolchain, which show the same behavior. Do you have any idea what's going wrong here? I'd appreciate any help you can provide! -- Kind regards, Gunnar Arndt

9 years, 4 months

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Another weird behavior with arm gcc 5.3

by fengwei.yin

Hi list, I hit another weird problem after use gcc 5.3 (If I use gcc 4.9, there is no any issue) with android. With arm gcc 5.3, the C++ apps crash in one class constructor call. And gdb shows some vtbl items of the class are not relocated. With arm gcc 4.9, if set breakpoint in that constructor, we could see the vtbl items of the class are relocated. And Yes. I know the android bionic loader take response to do relocation. But if it works with gcc 4.9, I suppose bionic loader work well (unless gcc 5.3 create some new situation not handled by it). I attached the vtbl dump in gdb for gcc 5.3 and 4.9 both. We could see all valid entries in vtbl are relocated in 4.9 dump. But not all entries in vtbl are relocated in 5.3 dump (the address is not started with 0xf). Suggestions/hints are welcome. Thanks a lot. Regards Yin, Fengwei

9 years, 4 months

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[ACTIVITY] 27 March to 1 April 2016

by kugan

== Progress == * Type promotion pass (4/10) - Tested many different architectures - Branch created - Getting ready to benchmark * LTO (2/10) - Read VRP algorithms - new - Discussing algorithm implementation * Bugs (1/10) - PR70359 * Misc (1/10) - GCC Lists - Jenkins benchmarking jobs * Public holiday (2/10) == Plan == * LTO and VRP

9 years, 4 months

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Re: Question regarding the arm gcc 5.3 to build android

by Jim Wilson

On Thu, Mar 31, 2016 at 5:12 AM, fengwei.yin <fengwei.yin(a)linaro.org> wrote: > Because gcc 4.9 could build this file without any issue, I apply > --save-temps > with gcc 4.9. The ii file is attached. Can't see significant differences. There is a patch in gcc-5 to make unified assembler syntax the default. Unfortunately, it changes how extended asms work, which is perhaps a bug. The message claims it doesn't affect extended asms, but it does. https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01196.html The interesting bit is the change to ASM_APP_OFF. gcc-4.9 emits a .thumb after the extended asm to switch back into thumb mode just in case. gcc-5.3 instead emits .syntax unified, which doesn't change the arm/thumb mode, just the syntax supported. This is arguably a bug, but this doesn't immediately help you. It could take a little time to get gcc-5.x source fixed, and then the compiler binary releases. Or alternatively we could fix the asm to work with gcc 5. Jim

9 years, 4 months

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[ACTIVITY] Week 13

by Yvan Roux

== Progress == o Extended validation (7/10) * Fixed and improved extended native validation * Discussed proposed patch in dejagnu on process killing mechanism * Testing a fix/workaround in GCC guality tests * Re-implemented and tested fix for dejagnu remote layout o Misc (3/10) * Various meetings == Plan == o Continue on extended validation o Finalize DejaGNU patches, GCC ARMv8.1 builtins fix.

9 years, 4 months

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[Weekly] 28 March - 01 Apr

by Michael Collison

== This week == * Bugzilla 69008 - gcc emits unneeded memory access when passing trivial structs by value (ARM) (3/10) - Additional investigation and preliminary implementation * Bugzilla 70089 - ARM/THUMB unnecessarily typecasts some rvalues on memory store (1/10) - Investigation * TCWG-247 - Create Validation Job to run on GCC Trunk Committ (5/10) - Began writing shell script. * Misc meeting (1/10) == Next week == * TCWG-247 - Make additional prgoress on prototype * Bugzilla 69008 - gcc emits unneeded memory access when passing trivial structs by value (ARM) - Additional investigation and preliminary implementation * Bugzilla 70089 - ARM/THUMB unnecessarily typecasts some rvalues on memory store - Investigation * Vacation - April 8 - April 12

9 years, 4 months

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[ACTIVITY]

by Renato Golin

== Progress == * Holiday (2/10) * Support (1/10) - Reapplying fix for PR16275 (D18701) - Conclusion is that original approach will be the same as GCC - Additional flags will have to be agreed upon across compilers * Buildbot (2/10) - Setting up LLDB buildbot with Omair - Precarious infrastructure is unstable, hope it holds on until the new rack is complete * Background (5/10) - Code review, meetings, discussions, general support, etc. - More team management stuff (access/procedure/meeting with newcomers) - Planning the lab move, resources, costs, schedule

9 years, 4 months

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[ACTIVITY] 28 March -- 01 April

by Yao Qi

* Monday off [2/10] # Progress # * TCWG-167, ARM reverse debugging bug fixes. [4/10] Two patches are posted. Two patches are being tested. They fix 207 FAILs (242 -> 35) in gdb.reverse. * TCWG-545, no progress, patches are pending for review. * TCWG-547, [2/10]. Write a patch as Pedro suggested, so we have sense which patch is better. No response. * Misc, [2/10] ** Upstream discussions on get syscall number on execve exit. Can't get such thing from kernel side, need to figure out how to do it in GDB side. ** Investigate a little bit on 32-bit DWARF on AArch64. # Plan # * TCWG-167, TCWG-545, TCWG-547 -- Yao

9 years, 4 months

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[ACTIVITY] 28 March-1 April 2016

by Christophe Lyon

* Monday off (2/10) == Progress == * Validation - extended validation - dejagnu and stdout/stderr possible races * GCC - reported a few regressions in trunk and gcc-5 branch - a few backports * Misc (confi-calls, meetings, emails, ....) == Next == * Validation - extended validation - more on dejagnu stdout/stderr & random results * GCC: - trunk monitoring, report regressions if needed - intrinsics tests cleanup - backports

9 years, 4 months

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[ACTIVITY] 27 March to 1 April 2016

by Prathamesh Kulkarni

== This Week == * LTO (7/10) a) TCWG-534 (ipa-comdats): - Patch posted upstream: https://gcc.gnu.org/ml/gcc/2016-03/msg00254.html - Investigating ICE with patch for comdat-2.C b) TCWG-128 (branch out of range error): - Posted patch upstream: https://gcc.gnu.org/ml/gcc-patches/2016-04/msg00032.html c) intra-procedural vrp: - Looking to implement replacement_order algorithm for early vrp from the paper: https://engineering.purdue.edu/paramnt/publications/1381.pdf * Validation (2/10) - Reviews on tcwg-buildapp from Christophe and Maxim - prototype job ran successfully. * Misc (1/10) - Meetings == Next Week == * LTO: - Try to implement replacement order algorithm for vrp - Continue investigating ipa-comdats ICE and address upstream comments. - Gather stats for chromium LTO build * Validation: - write script to build chromium

9 years, 4 months

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Support for ARM v8.2

by Vitali Sokhin

Hi all, Is there a roadmap for adding support for ARMv8.2 ? Specifically for assembler to support new instructions and SPRs? Thank you, Vitali

9 years, 4 months

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Re: Question regarding the arm gcc 5.3 to build android

by Jim Wilson

On Wed, Mar 30, 2016 at 6:26 PM, fengwei.yin <fengwei.yin(a)linaro.org> wrote: > Thanks a lot for your quick response. The .ii file was attached. In UnwindFromContext, there is an asm that forces the assembler into ARM mode. if (ucontext == nullptr) { int ret = (({ unw_tdep_context_t *unw_ctx = (&context_); register unsigned \ long *unw_base asm ("r0") = unw_ctx->regs; __asm__ __volatile__ ( ".align 2\nbx\ pc\nnop\n.code 32\n" "stmia %[base], {r0-r15}\n" "orr %[base], pc, #1\nbx %[ba\ se]" : [base] "+r" (unw_base) : : "memory", "cc"); }), 0); The ".code 32" puts us in ARM mode. GCC still thinks that we are in thumb mode though, and continues to emit thumb instructions, some of which have no arm mode equivalent, e.g. cbnz and cbz. I don't see any convenient push/pop for thumb/arm mode. This is probably a macro expanded into the asm. You could have two versions of the asm, one that gets used when __thumb__ is defined and one that gets used when __thumb__ is not defined. The __thumb__ version would switch back into thumb mode at the end with a ".thumb" pseudo-op. Or alternatively, don't build with -mthumb. Jim

9 years, 4 months

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Question regarding the arm gcc 5.3 to build android

by yfw

Hi folks, I am trying to use arm gcc 5.3 to build part of android AOSP and hit following issue with arm gcc 5.3: The gcc cmd line is like: /opt/work/acadine/mem_shrink/B2G-v2.5/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-5.3-linaro/bin/arm-linux-androideabi-g++ -I external/libcxx/include -I system/core/libbacktrace -I out/target/product/linaro_arm/obj/SHARED_LIBRARIES/libbacktrace_intermediates -I out/target/product/linaro_arm/gen/SHARED_LIBRARIES/libbacktrace_intermediates -I libnativehelper/include/nativehelper -I system/core/base/include -I external/libunwind/include -isystem system/core/include -isystem system/media/audio/include -isystem hardware/libhardware/include -isystem hardware/libhardware_legacy/include -isystem hardware/ril/include -isystem libnativehelper/include -isystem frameworks/native/include -isystem frameworks/native/opengl/include -isystem frameworks/av/include -isystem frameworks/base/include -isystem out/target/product/linaro_arm/obj/include -isystem bionic/libc/arch-arm/include -isystem bionic/libc/include -isystem bionic/libc/kernel/uapi -isystem bionic/libc/kernel/uapi/asm-arm -isystem bionic/libm/include -isystem bionic/libm/include/arm -c -fno-exceptions -Wno-multichar -msoft-float -ffunction-sections -fdata-sections -funwind-tables -fstack-protector -Wa,--noexecstack -Werror=format-security -D_FORTIFY_SOURCE=2 -fno-short-enums -no-canonical-prefixes -fno-canonical-system-headers -march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16 -include build/core/combo/include/arch/linux-arm/AndroidConfig.h -I build/core/combo/include/arch/linux-arm/ -Wno-psabi -mthumb-interwork -DANDROID -fmessage-length=0 -W -Wall -Wno-unused -Winit-self -Wpointer-arith -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -DNDEBUG -g -Wstrict-aliasing=2 -fgcse-after-reload -frerun-cse-after-loop -frename-registers -DNDEBUG -UDEBUG -fvisibility-inlines-hidden -DANDROID -fmessage-length=0 -W -Wall -Wno-unused -Winit-self -Wpointer-arith -Wsign-promo -std=gnu++11 -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -DNDEBUG -UDEBUG -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -fno-rtti -Wall -Werror -fPIC -D_USING_LIBCXX -std=gnu++11 -Werror=int-to-pointer-cast -Werror=pointer-to-int-cast -MD -MF out/target/product/linaro_arm/obj/SHARED_LIBRARIES/libbacktrace_intermediates/UnwindCurrent.d -o out/target/product/linaro_arm/obj/SHARED_LIBRARIES/libbacktrace_intermediates/UnwindCurrent.o system/core/libbacktrace/UnwindCurrent.cpp And I got error: /tmp/ccZ40ViQ.s: Assembler messages: /tmp/ccZ40ViQ.s:1752: Error: selected processor does not support ARM mode `cbnz r6,.L91' /tmp/ccZ40ViQ.s:1758: Error: selected processor does not support ARM mode `cbnz r0,.L92' /tmp/ccZ40ViQ.s:1763: Error: selected processor does not support ARM mode `cbz r1,.L107' /tmp/ccZ40ViQ.s:1941: Error: selected processor does not support ARM mode `cbz r6,.L100' But if I use the arm gcc 4.9, there is no any build issue. the "-dumpspecs" output of gcc 5.3 was attached. Thanks. Regards Yin, Fengwei

9 years, 4 months

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[ANNOUNCE] Linaro Binary Toolchain Release GCC 4.9-2016.02

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 4.9-2016.02 Release is now available. Notice: All Linaro GCC 4.9 series toolchain users should migrate to the latest version of the Linaro GCC 4.9 toolchain in order to mitigate potential security exposure to CVE-2015-7545. See the NEWS section below for details. Download release packages from: http://releases.linaro.org/components/toolchain/gcc-linaro/4.9-2016.02/ http://releases.linaro.org/components/toolchain/binaries/4.9-2016.02/ Previous snapshots and release-candidates are at: http://snapshots.linaro.org/components/toolchain/binaries/ Previous releases are at: http://releases.linaro.org/components/toolchain/binaries/ Host Requirements ================== Linaro officially supports the current and previous Ubuntu LTS releases (as of the time of this release). This does not mean that the toolchain will not work on other/older Linux distributions. See the following for the life-time of Ubuntu LTS releases. https://wiki.ubuntu.com/Releases The host system upon which the cross-compiler will run requires a minimum of glibc 2.14, because of API changes to glibc's memcpy API. https://bugs.linaro.org/show_bug.cgi?id=1869 Package Versions ================= Linaro GCC 4.9-2016.02 FSF eglibc 2.19 (eglibc.git/linaro_eglibc-2_19) Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) Linaro binutils 2.24 (linaro_binutils-2_24-branch) FSF GDB 7.10 (gdb-7.10-branch) Linaro Linux Version 3.17-2014.10 (linux-linaro-3.17-2014.10) Linaro toolchain package git branches are hosted at: http://git.linaro.org/?a=project_list&s=toolchain%2F&btnS=Search NEWS for Linaro GCC 4.9-2016.02 ================================ * The armv8l-linux-gnueabihf targetted toolchain is now built using --with-mode=thumb (like all of the other cross toolchains) rather than the default which is ARM mode. * Applied fix for CVE-2015-7545 - A stack-based buffer overflow in glibc's getaddrinfo() was corrected in glibc 2.23 and backported into Linaro eglibc 2.19 (linaro_eglibc-2_19). https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html * See the following Linaro GCC snapshot: http://snapshots.linaro.org/components/toolchain/gcc-linaro/4.9-2015.10/ Contact Linaro =============== File bugs at http://bugs.linaro.org For Linaro member support see http://support.linaro.org For Linaro community support email linaro-toolchain(a)lists.linaro.org -- Ryan S. Arnold | Linaro Toolchain Engineering Manager ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net

9 years, 4 months

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