- linaro-toolchain - lists.linaro.org

[ACTIVITY] 12-16 June 2017

by Christophe Lyon

== Progress == * Infrastructure/validation: - still some random results, and still ssh connexion problems with several machines - improving abe-bisect script * Benchmarking: * GCC: - 'deprecated IT-blocks' patch: looking at the generated code to understand the regressions * GCC upstream validation: - reported a couple of regressions on trunk, a few bisects, helped validating some ARM patches - working on further reducing noise ("random" pass/failures) - include qemu traces in the logs when a testcase aborts, to help debug * misc (conf-calls, meetings, emails, ....)

8 years, 3 months

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[ANNOUNCE] Linaro GCC 6 and 7 2017.06 source snapshots

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2017.06 snapshot of Linaro GCC 6 and 7 source packages. o The GCC 7 series introduced an ABI change for ARM targets by fixing a bug (present since GCC 5, see link below) that affects conformance to the procedure call standard (AAPCS). The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected by this ABI change. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html o Linaro GCC 7 monthly snapshot[1] is based on FSF GCC 7.1+svn249190 and includes performance improvements and bug fixes backported from mainline GCC. The contents of this snapshot will be part of the 2017.08 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.06/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 7.1+svn249190 * Backport of [Bugfix] [AArch32] PR target/71607 Fix ICE when loading constant * Backport of [Bugfix] [AArch64] PR target/80671 config/aarch64/cortex-a57-fma-steering.c:416: bad statement order * Backport of [Bugfix] PR tree-optimization/79697 unused realloc(0, n) not eliminated * Backport of [Bugfix] PR tree-optimization/80613 ICE in is_gimple_reg_type with -O2 * Backport of [AArch32] Add a new target hook to compute the frame layout * Backport of [AArch32] Add fuchsia support to libgcc * Backport of [AArch32] FreeBSD arm libgcc config.host * Backport of [AArch32] Model Cortex-A53 load forwarding * Backport of [AArch64] Accept more addressing modes for PRFM * Backport of [AArch64] Add aes and sha reservations for Thunderx2t99 * Backport of [AArch64] Add crc reservations for Thunderx2t99 * Backport of [AArch64] Improve float to int moves * Backport of [AArch64] Set jump alignment to 4 for Cortex cores * Backport of [AArch64] Tighten move constraints for symbolic operands * Backport of [Misc] Check the alternate cost model just as costs_lt_p * Backport of [Misc] Record equivalences for spill registers * Backport of [Testsuite] [AArch32] Only test tls-disable-literal-pool.c if target supports native TLS * Backport of [Testsuite] [AArch32] Replace absolute line numbers in gcc.target/arm * Backport of [Testsuite] [AArch64] Replace absolute line numbers in gcc.target/aarch64 o Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.3+svn249140 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the 2017.08 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.06/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 6.3+svn249140 o 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]. Source package snapshots are defined when the compiler is only put through unit-testing and full validation is not performed. [2]. Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed.

8 years, 3 months

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[ACTIVITY] 05 - 09 June 2017

by Peter Smith

== Progress == LLD - Committed refactoring patches to enable long range thunks. This should unblock progress towards upstreaming patches. - Rebased and sent out for review first patches in series. Expecting slow but steady progress as I hope to not need much more large scale refactoring. == Plans == Compiler-rt - Investigated cross-compilation and testing via qemu user mode emulation. It seems to be possible to do so, although fiddly to set up Plans for this week: - LLD long range thunks - Build up a task list for compiler-rt - Likely take Friday on holiday

8 years, 3 months

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[ACTIVITY] Week 23

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * Completed and released 7.1-2017.05 release * Preparing backports for 2017.06 source snapshot * Checked upstream status w/r to merge regression observed: issue fixed * Investigating mingw32 libgomp build issue * Switched abe/stable to abe/tested branch o Misc (3/10) * Various meetings and discussions. == Plan == o 2017.06 snapshot o Fix libgomp problem and continue on re-association

8 years, 3 months

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[ACTIVITY] 5 - 9 June 2017

by Diana Picus

== Progress == * [ARM GlobalISel] Support AND, OR, XOR [TCWG-1157] [2/10] - Committed upstream * [ARM GlobalISel] Fix arm-irtranslator test [TCWG-1146] [1/10] - Committed upstream * [GlobalISel] Remove the G_SEQUENCE node [TCWG-1138] [1/10] - Removed the G_SEQUENCE node from the ARM backend * [ARM GlobalISel] Support mod [TCWG-1105] [2/10] - Have some patches downstream for handling this - Not sure it's the best way to go, so I've been asking for some guidance before moving forward with it * [Helpers] Add "push" capability [TCWG-1141] [2/10] - Almost ready, will send a pull request next week * Misc [2/10] - Mailing lists, meetings, buildbot monitoring - Opened a backport request for Ubuntu Xenial binutils for an lld bug that is affecting our buildbots == Plan == * More GlobalISel * Check if our internal buildmaster works now, try to setup some buildbots

8 years, 3 months

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[ACTIVITY] 05 - 09 June 2017

by Yao Qi

* One day off on Monday [2/10] # Progress # * GDB 8.0 is released! TCWG-1050. Done. * GDB target description changes. [5/10] It is needed for adding SVE in GDB. Change GDB target description, and start from x86-linux. The more I write the code, the more right I believe the change is. Patches are done, but still need to complete commit log, changelog, and polish the code. Write an abstract about it for GNU Cauldron. Spend some time thinking about a good title. * Upstreams review. [1/10] ** Review some Alan H.'s patches. ** Review the OpenRISC patches. * Misc, [2/10] ** Follow up the OpenOCD work. Create two epics for the following work. ** Meetings. # Plan # * Post my target descriptions changes upstreams. * Post some leftover patches about GDB and OBJDUMP disassembler unification. -- Yao Qi

8 years, 3 months

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[ACTIVITY] 5-9 June 2017

by Christophe Lyon

Short week (Monday off) == Progress == * Infrastructure/validation: - reviews - noticed ~random results in one binutils test on apm/tk1, didn't understand the problem yet. Manual runs all succeeded :( * Benchmarking: - comparison script/job - reviews * GCC: - benchmarking old 'deprecated IT-blocks' patch. Seems to confirm large regressions on some benchmarks, and non-functional on at least one bench. - sent updated testsuite patch to support -march=armv5t runtestflags after dejagnu update - testing: checked a config --with-cpu=arm10tdmi instead of forcing -march-armv5t via runtestflags, to see how the validation results differ: not much, so if my previous patch is not accepted, I might change the configurations I use for non-regression testing - reported a couple of regressions on trunk * misc (conf-calls, meetings, emails, ....)

8 years, 3 months

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[ANNOUNCE] Linaro Binary Toolchain Release GCC 7.1-2017.05

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 7.1-2017.05 Release is now available. *Notice*: GCC 7.1 ABI change for arm*-*-* targets, and note for aarch64*-*-* targets >From GCC 7.1 release notes: On ARM targets (arm*-*-*), a bug introduced in GCC 5 that affects conformance to the procedure call standard (AAPCS) has been fixed. The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. This is an ABI change. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 GCC 5 and GCC 6 releases will continue to be affected by the ABI bug, since changing ABI in these releases is not practical. A warning enabled by -Wpsabi option was added to GCC 5 and GCC 6 toolchains to diagnose codebases that might be affected by the ABI bug. Additionally, this same bug was present in AArch64 backend in development versions of GCC 7. There was no releases of GCC with this bug present in AArch64 backend, therefore the release notes does not mention this. However, be advised that any code bases built with development versions of GCC 7 need to be recompiled with released version of GCC 7 to conform to ABI. For an explanation of GCC 7 series changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html For help in porting to GCC 7 please see the following explanation: https://gcc.gnu.org/gcc-7/porting_to.html Download release packages from: (sources) http://releases.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ (binaries) http://releases.linaro.org/components/toolchain/binaries/7.1-2017.05/ 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/ A description of the arm and AArch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 7.1-2017.05 http://releases.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ FSF glibc 2.25 (release/2.25) https://lists.gnu.org/archive/html/info-gnu/2017-02/msg00002.html Newlib 2.5 (newlib-2_5_0 tag) https://sourceware.org/ml/newlib/2016/msg01191.html GNU Binutils 2.28 (binutils-2_28-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 8.0 (gdb-8.0-branch) https://sourceware.org/ml/gdb-announce/2017/msg00003.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 7 (as of Linaro GCC 7.1-2017.05) ============================================== * Performance related backports from the following snapshots have been included: Linaro GCC 7.1-2017.05. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ 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

8 years, 3 months

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[ACTIVITY] 29 May - 2 June 2017

by Peter Smith

Progress - Long range thunks Committed a couple of refactorings on .ARM.exidf and SHF_LINK_ORDER support. With luck final patch for SHF_LINK_ORDER will be approved next week Submitted patches to convert existing Thunk Implementation to use InputSectionDescriptions. Hopefully these ones are broken down into small enough parts for upstream to look at. - Tracked down https://bugs.llvm.org/show_bug.cgi?id=33136 libc++ failing ~100 tests with std::bad_cast exception when built in release mode. Was down to global-merge incorrectly merging globals that were not DSO local. Looks to have been fixed quickly - llvm-mc Helped out with D33436 review on how to do interworking branches in assembler D33492 accepted, will commit next week. Plans: - Long range thunks Continue with slow progress towards upstreaming - Investigate compiler-rt

8 years, 3 months

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[ACTIVITY] Week 22

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * Deployed 7.1 release candidate * Catching up with re-association development * Preparing switch to abe/tested branch o Misc (3/10) * Various meetings and discussions. == Plan == o release 7.1 2017.05 o Continue on re-association

8 years, 3 months

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[ACTIVITY] 29 May - 2 June 2017

by Diana Picus

== Progress == * [GlobalISel] AArch64 test-suite and self-host [TCWG-1074] [3/10] - Reported and investigated a codegen issue introduced by one of Quentin's patches, which was appearing while selfhosting with GlobalISel - Ran the test-suite and self-host again after it was fixed * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] [3/10] - Committed the lowering part upstream - Still needs support in the rest of the pipeline but that will be a different issue * [Helper scripts] Add "push" capability [TCWG-1141] [1/10] - Started writing tests * Misc [3/10] - Meetings, mailing lists, babysitting the buildbots - [GlobalISel] Run precommit for Daniel's patch [TCWG-1142]: did another run for this - LLVM 4.0.1 [TCWG-1136]: ran rc2 on ARM and AArch64 == Plan == * [ARM GlobalISel] Fix arm-irtranslator test [TCWG-1146] * Replace D01s by Scaleway boards [TCWG-836] * More GlobalISel stuff

8 years, 3 months

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[ACTIVITY] 29 May-2 June 2017

by Christophe Lyon

== Progress == * Infrastructure: - improvements in binutils Jenkins jobs, to track regressions rather than always report 'failed'. Pass ratio can still be very low in some configs (eg arm-pe) * Benchmarking: - work around problems with many simultaneous ssh connexions for remote cross-compilation * GCC: - benchmarked old 'deprecated IT-blocks' patch. - reported a few regressions in trunk - looking at testsuite-isms: problems with some multilibs after dejagnu upgrade (where multilib flags are now prepended, rather than appended previously) * misc (conf-calls, meetings, emails, ....) == Next == * Short week (off Monday) * Benchmarking scripts * GCC

8 years, 3 months

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[ACTIVITY] 22 - 26 May 2017

by Peter Smith

Progress - Long range thunks Made some more progress on the refactoring needed to merge the representations for the script and non-script cases. Close to getting the .ARM.exidx sections converted. - Some thoughts on https://reviews.llvm.org/D33436 to do with ARM/Thumb interworking in the assembler. -- Discovered that gold and lld get the case of a relocation to a Thumb non STT_FUNC symbol with bit 0 clear wrong. Both linkers attempt to interwork (they shouldn't as the symbol is not STT_FUNC) but identify the symbol as ARM due to bit 0 being clear. Luckily these are corner cases only brought up by hand-written assembler. - Investigation into https://bugs.llvm.org/show_bug.cgi?id=33136 libc++ failing ~100 tests with std::bad_cast exception when built in release mode (clean upstream build uses debug). -- Reduced failing test to std::cout << std::endl; the std::bad_cast comes from an out of range index into a vector of available locales. -- Current thought is that this could be a codegen bug as I can only reproduce in Release (-O3) and not RelWithDebInfo (-O2). Plans for next week: - Long range thunks Make more progress on refactoring. Should get .ARM.exidx patches upstream, next step to convert long range thunks themselves. - Work on diagnosing PR33136.

8 years, 3 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 7.1-2017.05-rc1

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 7.1-2017.05-rc1 Release-Candidate is now available. *Notice*: GCC 7.1 ABI change for arm*-*-* targets, and note for aarch64*-*-* targets >From GCC 7.1 release notes: On ARM targets (arm*-*-*), a bug introduced in GCC 5 that affects conformance to the procedure call standard (AAPCS) has been fixed. The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. This is an ABI change. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 GCC 5 and GCC 6 releases will continue to be affected by the ABI bug, since changing ABI in these releases is not practical. A warning enabled by -Wpsabi option was added to GCC 5 and GCC 6 toolchains to diagnose codebases that might be affected by the ABI bug. Additionally, this same bug was present in AArch64 backend in development versions of GCC 7. There was no releases of GCC with this bug present in AArch64 backend, therefore the release notes does not mention this. However, be advised that any code bases built with development versions of GCC 7 need to be recompiled with released version of GCC 7 to conform to ABI. For an explanation of GCC 7 series changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html For help in porting to GCC 7 please see the following explanation: https://gcc.gnu.org/gcc-7/porting_to.html Download release-candidate packages from: (sources) http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05-rc1/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/7.1-2017.05-rc1/ 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/ A description of the arm and AArch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 7.1-2017.05-rc1 http://releases.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05-rc1/ FSF glibc 2.25 (release/2.25) https://lists.gnu.org/archive/html/info-gnu/2017-02/msg00002.html Newlib 2.5 (newlib-2_5_0 tag) https://sourceware.org/ml/newlib/2016/msg01191.html GNU Binutils 2.28 (binutils-2_28-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 8.0 (gdb-8.0-branch) https://sourceware.org/ml/gdb-announce/2017/msg00001.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 7 (as of Linaro GCC 7.1-2017.05-rc1) ================================================== * Performance related backports from the following snapshots have been included: Linaro GCC 7.1-2017.05. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ 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

8 years, 3 months

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[ACTIVITY] 22-24 May 2017

by Christophe Lyon

Short week (Off Thursday/Friday) == Progress == * Infrastructure: - improvements in binutils Jenkins jobs, to track regressions rather than always report 'failed' * Benchmarking: - polishing scripts * GCC: * misc (conf-calls, meetings, emails, ....) == Next == * Benchmarking scripts * GCC: rebase old patches and re-benchmark

8 years, 3 months

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[ACTIVITY] Week 21

by Yvan Roux

* Two days off (4/10) == Progress == o Linaro GCC/Validation (5/10) * Deployed 6.3 and 5,4 2017.05 releases (source and binaries) * Updated components for 7.1 2017.05 release candidate * Finishing release notes before deployment o Misc (1/10) * Various meetings and discussions. == Plan == o Deploy 7.1-rc1 and prepare release o Upstream monitoring reporting o Back on compiler development

8 years, 3 months

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ACTIVITY 22 - 26 May 2016

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (4/10) - Reworking the patch with suggested improvements * PR80806 (1/10) - Rejected patch, based on discussions with Martin and Jeff - Submitted patch to remove dead call to memset in value-prof.c * type promotion (2/10) - Discussions with Kugan - Trying out different test-cases and going through the patch/ML discussions * TCWG-1129 (1/10) - Understanding EH in gcc * Validation (1/10) - Cross compiling boost for ARM * Misc (1/10) - Meetings - Pinged patch for PR78736. == Next Week == - GCC: TCWG-1005, type promotion, TCWG-1129, bugs - Validation: Add Boost to tcwg-buildapp

8 years, 3 months

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[ACTIVITY] 22 - 26 May 2017

by Yao Qi

# Progress # * GDB 8.0 release. TCWG-1050, [1/10] Blocked by one MingW build issue. Should be the last one. * gdb and objdump disassembler unification. [3/10] Patches are approved. Rebase them, re-test them, and push them in. Clean up some leftovers. * GDB target description changes. [5/10] Finish the design in GDBserver. Finish the prototype of both GDB and GDBserver. Re-org them to some extent. * GDB crossbuild w/ docker. [1/0] Inspired by QEMU build, take a look docker and think about how to use docker to build/test GDB for different targets. # Plan # * Holiday, and back to office on 6th June. * Post RFC v2 on GDB target description changes. * Upstream the patches of clean up to gdb and objdump disassembler unification. -- Yao Qi

8 years, 3 months

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[ACTIVITY] 22 - 26 May 2017

by Diana Picus

== Progress == * Bank holiday on Thursday [2/10] * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] [5/10] - The array stuff is ready to commit, but SVN was down this morning so I'll commit next week * [GlobalISel] Run precommit for Daniel's patch [TCWG-1142] [2/10] - Ran precommit both manually and in Jenkins - Had some trouble with Jenkins and with the patch (it was based on the wrong revision) - In the end it was still too slow, so I'll probably get another patch next week * Misc [1/10] - Meetings, mailing lists, buildbots == Plan == * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] - Finally commit this thing! * Add "push" capability to helper scripts [TCWG-1141] - This will be useful for working with Jenkins

8 years, 3 months

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[ANNOUNCE] Linaro Binary Toolchain Release GCC 6.3-2017.05

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 6.3-2017.05 Release is now available. The GCC 6 Release series has significant changes from the GCC 5 release series. For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-6/changes.html For help in porting to GCC 6 please see the following explanation: https://gcc.gnu.org/gcc-6/porting_to.html Download release packages from: (sources) http://releases.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05/ (binaries) http://releases.linaro.org/components/toolchain/binaries/6.3-2017.05/ 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/ A description of the arm and Aarch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 6.3-2017.05 http://releases.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05/ Linaro glibc 2.23 (linaro/2.23/master) https://lists.gnu.org/archive/html/info-gnu/2016-02/msg00009.html Linaro newlib 2.4-2016.03 (linaro_2.4-branch) https://sourceware.org/ml/newlib/2016/msg00370.html Linaro binutils 2.27 (linaro-local/linaro_binutils-2_27-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… Linaro GDB 7.12 (gdb-7.12-branch) https://lists.gnu.org/archive/html/info-gnu/2016-10/msg00007.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 6 (as of Linaro GCC 6.3-2017.05) ============================================== * Previous versions of the Linaro GCC 6 toolchain, when -static -E/—dynamic-list are passed to the linker, might create executables with dynamic sections which aren’t supported by run-time. This was exhibited in Perf Tools build system and has been fixed upstream and backported into Linaro Binutils 2.27 branch. Linaro bugzilla #2926 : Perf tools compiled statically for AArch64 with Linaro release 6.1 and later ones was not statically linked. https://bugs.linaro.org/show_bug.cgi?id=2926 * The Linaro GCC 6.3-2017.03 snapshot fixed some ILP32 issues (TLS, exception handling, …) and these have been incorporated into this release. * Previous versions of the Linaro GCC 6 toolchain were incorrectly generating floating-point code for soft-float Linux targets (arm-linux-gnueabi, and armeb-linux-gnueabi). This escaped detection until recently because the soft-float targeted toolchains were configured to use general-purpose registers for passing floating-point values (which is what you would expect for soft-float toolchains) and the intra-routine floating-code was not noticed. The issue would only show up on targets that were run on hardware that truly didn't have floating-point hardware where the kernel did not trap and emulate floating-point routines. This has been solved in Linaro GCC 6.3-2017.02-rc2 by configuring the toolchain (using --with-float=soft) to generate code without any floating-point instructions at all (-mfloat-abi=soft). https://review.linaro.org/#/c/16968/2 This change should not break compatibility between existing binaries compiled with these toolchains since the float-point parameter passing ABI is still the same. * A bug/regression in the compiler has been identified whereby the target function that is invoked when calling a "weak" function directly is the "strong" override, whereas when calling the function via a pointer the "weak" implementation is used. This would be noticed as inconsistent function invocation when invoking directly vs. invoking via function pointer. This issue only affected 32-bit arm targets. This regression has been fixed upstream and backported into Linaro GCC 6.3-2017.02-rc2. GCC PR target/78253: [5/6/7 Regression] [ARM] call weak function instead of strong when called through pointer. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78253 Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * MS Windows does not support symlinks and the MS Windows archive extractor does not properly deep copy the symlink target files/directories into the symlinked directory structure when unpacking the toolchain archive. This causes problems with missing dependencies when using the Linaro mingw toolchains, as identified in the following bugs: https://bugs.linaro.org/show_bug.cgi?id=2684 https://bugs.linaro.org/show_bug.cgi?id=2192 https://bugs.linaro.org/show_bug.cgi?id=2762 This has been solved by copying files rather than using symlinks when the mingw targetted toolchain archives are created. https://review.linaro.org/#/c/16415/ * Users of Linaro's toolchain have encountered problems when building projects with Autotools (specifically libtool): https://bugs.linaro.org/show_bug.cgi?id=2764 The Linaro binary toolchain release contained files with a .la suffix as artifacts of the toolchain build process. These .la files are helper files for libtool, but unlike a gcc install tree, they are not position independent and contain full paths. Since these artifacts contain absolute paths they can actually mislead user invocation of libtool into not finding required libraries (because they reference the build tree, not the install location) and hence breaking Autotools builds. These *.la file artifacts have been removed from Linaro toolchain binaries because they are unnecessary for users. * The Linaro GCC 6.3-2017.01 snapshot added further enablement for ARMv8-M and these have been incorporated into this release. * Compiling and statically linking some SPEC2006int tests against tcmalloc have been failing due to a problem with glibc's memory allocator function overrides. This was fixed upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=20432 Backported into Linaro glibc 2.23: commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer <fweimer(a)redhat.com> Date: Fri Aug 26 22:40:27 2016 +0200 malloc: Simplify static malloc interposition [BZ #20432] * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 1.5G to 600M for aarch64-linux-gnu target with the gcc-6-branch. * The GDB version was upgraded from GDB 7.11 in the Linaro GCC 6.1-2016.08 release to GDB 7.12 in the Linaro GCC 6.2-2016.11 release. * The Linaro GCC 6.2-2016.10 snapshot added AArch32 support for ARMv8.2 and ARMv8m, as well as some AArch64 fixes for ARMv8.2, and bug fixes merged from FSF GCC 6.2. This is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * Basic tuning support for the Qualcomm qdf24xx was added to the Linaro GCC 6.2-2016.10 snapshot and is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * IFUNC was disabled for baremetal targets, as it was causing test-suite failures, and is presently a Linux only feature. * The gold linker was added to this binary release. * Backported malloc_lock fix into Linaro newlib 2.4. commit 2665915cfc46aa6403bb2efd473c523d3167e0cb Author: Andre Vieira (lists) <Andre.SimoesDiasVieira(a)arm.com> Date: Thu Jun 16 12:23:51 2016 +0100 Re-enable malloc_lock for newlib-nano * Backported rawmemchr patch into Linaro newlib 2.4. commit e7b1ee2ea6aa3ee1da41976407410e6202a098c5 Author: Wilco Dijkstra <Wilco.Dijkstra(a)arm.com> Date: Thu May 12 16:16:58 2016 +0000 Add rawmemchr * Backported strlen fix when using Thumb-2 and -Os -marm into Linaro newlib 2.4. commit 5c02bcc086a96b174e1b9e1445a4a1770070107a Author: Thomas Preud'homme <thomas.preudhomme(a)arm.com> Date: Wed May 11 17:18:48 2016 -0400 Fix strlen using Thumb-2 with -Os -marm * Backported fix for semihosting ARM when heapinfo not provided by debugger into Linaro newlib 2.4. commit 5c9403eaf40951f8a4f55ed65f661b485ff44be7 Author: David Hoover <spm2(a)dangerous.li> Date: Thu Apr 21 07:12:24 2016 +0200 Fixed semihosting for ARM when heapinfo not provided by debugger. * Merged latest FSF glibc release/2.23/master into Linaro glibc 2.23. * Backported __ASSUME_REQUEUE_PI check Linaro glibc 2.23 branch. commit 2d20c3bf918cd94ebd4106693adb3a5c9272baba Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) * Backported removal of __ASSUME_SET_ROBUST_LIST from Linaro glibc 2.23 branch. commit bb8f09d72756186a3d82a1f7b2adcf8bc1fbaed1 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST * Backported removal of __ASSUME_FUTEX_LOCK_PI from Linaro glibc 2.23 branch. commit e48b4e7fed0de06dd7832ead48bea8ebc813a204 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Merged latest FSF binutils-2_27-branch into linaro_binutils-2_27-branch. * The libwinpthread DLL is now copied into the host bin directory to satisfy mingw package dependencies. * Backported GNU Linker fix. commit fbc6c6763e70cb2376e2de990c7fc54c0ee44a59 Author: Nick Clifton <nickc(a)redhat.com> Date: Tue Aug 23 09:45:11 2016 +0100 Fix seg-fault in ARM linker when trying to parse a binary file. * Backported GNU Assembler fix for PR 20364 commit 5fe7ebe5ab43750abf8f490b785d99a1e598e7fd Author: Nick Clifton <nickc(a)redhat.com> Date: Fri Aug 5 10:37:57 2016 +0100 Fix the generation of alignment frags in code sections for AArch64. https://sourceware.org/bugzilla/show_bug.cgi?id=20364 * Performance related backports from the following snapshots have been included: Linaro GCC 6.1-2016.06, Linaro GCC 6.1-2016.07, Linaro GCC 6.1-2016.08, Linaro GCC 6.2-2016.09, Linaro GCC 6.2-2016.10, Linaro GCC 6.2-2016.11, Linaro GCC 6.2-2016.12, Linaro GCC 6.3-2017.01, Linaro GCC 6.3-2017.02, Linaro GCC 6.3-2017.03 and Linaro GCC 6.3-2017.04. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.06/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.07/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.08/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.09/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.10/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.01/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.03/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.04/ 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

8 years, 3 months

1
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[ANNOUNCE] Linaro Binary Toolchain Release GCC 5.4-2017.05

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 5.4-2017.05 Release is now available. Notice: All Linaro GCC 5 series toolchain users should migrate to the latest version of the Linaro GCC 5 toolchain in order to mitigate potential security exposure to CVE-2015-7547. See the NEWS section below for details. Download release packages from: (sources) http://releases.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05/ (binaries) http://releases.linaro.org/components/toolchain/binaries/5.4-2017.05/ 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/ A description of the arm and Aarch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 5.4-2017.05 http://releases.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05/ Linaro glibc 2.21 (linaro/2.21) https://lists.gnu.org/archive/html/info-gnu/2015-02/msg00001.html Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) https://sourceware.org/ml/newlib/2013/msg01128.html Linaro binutils 2.25 (linaro_binutils-2_25-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 7.12 (gdb-7.12-branch) https://lists.gnu.org/archive/html/info-gnu/2016-10/msg00007.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 5 (as of Linaro GCC 5.4-2017.05) ============================================== * Include GCC fix for Linaro bugzilla #2785: Internal compiler error using -mtune=cortex-a57.cortex-a53. https://bugs.linaro.org/show_bug.cgi?id=2785 * The soft-float targeted toolchains have now been configured to generate code using -mfloat-abi=soft. This makes arm-linux-gnueabi and armeb-linux-gnueabi toolchains use the “soft” FP ABI instead of “softfp”. Historically, TCWG’s toolchains provided both “soft” and “softfp” multilibs, but when switching from crosstool-ng to cbuildv2/abe (which support a single multilib) “softfp” multilib was choosen. Using “-mfloat-abi=soft” is a better choice for a gnueabi toolchain, since it doesn’t require cores to have a floating-point unit. This change should not break compatibility for toolchain users since the ABI will stay the same. The compiler and glibc libraries will not refernce FP instructions. * Include GCC fix for Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * Include GCC fix for Linaro bugzilla #1925: [regression] FAIL: libgomp.fortran/retval1.f90 -O1 execution test https://bugs.linaro.org/show_bug.cgi?id=1925 * Include GCC fix for Linaro bugzilla #2185: aarch64-linux-gnu-g++ internal compiler error: in curr_insn_transform https://bugs.linaro.org/show_bug.cgi?id=2185 * Backported glibc patch to simplify static malloc interposition [BZ #20432] to correct user identified issue. commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer Date: Fri Aug 26 22:40:27 2016 +0200 malloc: Simplify static malloc interposition [BZ #20432] * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 1.1G to 580M for aarch64-linux-gnu target with the gcc-5-branch. * Removed .la files from binary toolchain archive as these files break autotools builds. https://bugs.linaro.org/show_bug.cgi?id=2764 * The mingw toolchains are now archived using the rsync -L option in order to avoid problems with Windows extractors and symbolic links. https://review.linaro.org/#/c/16415/ This resolves the following user bugs: https://bugs.linaro.org/show_bug.cgi?id=2684 https://bugs.linaro.org/show_bug.cgi?id=2192 https://bugs.linaro.org/show_bug.cgi?id=2762 * Copy the libwinpthread DLL into the bin directories so it gets into the tmp directory before tar is run. https://review.linaro.org/#/c/13723/ * Increment binutils release date to 2016_02 to reflect the most recent commit: commit ef90a4718f535cbe6345b4e7168baea7b1972abf Author: Matthew Wahab <matthew.wahab(a)arm.com> Date: Tue Jan 12 16:35:30 2016 +0000 [ARM] Support ARMv8.2 RAS extension. * Baremetal sysroot names now contain 'newlib' rather than 'glibc'. * Manifests now contain relative paths rather than absolute paths. * Now generating proper manifest files. * Fixed pi requeue support in glibc 2.21 while allowing the existing 2.21 minimum kernel default setting. This was checked into the linaro/2.21/master branch. commit a68cafa11c500d8a49a3014c43c5152859d037ae Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) commit 6e5cb616b5b442ce8b2664ad673c0acf42a490ac Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST commit 9ac61c0047295696cbcdbc26bdc174c7bd25a3c8 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Backported support into GCC for Cortex-A32, Cortex-A35, and Cortex-R8. * Applied fix for CVE-2015-7547 - A stack-based buffer overflow in glibc's getaddrinfo() was corrected in glibc 2.23 and backported into glibc 2.21. https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html * ARMv8.1 Instruction Support - ARMv8.1 instructions support was checked into GCC and binutils. It has been backported into Linaro GCC 5.3 and Linaro binutils 2.25. * Backported -Bsymbolic-functions into Linaro binutils 2.25. * Performance related backports from Linaro GCC 5.2-2015.11, Linaro GCC 5.2-2015.12, and Linaro GCC 5.3-2016.01-1, Linaro GCC 5.3-2016.02, Linaro GCC 5.3-2016.03, Linaro GCC 5.3-2016.04, Linaro GCC 5.4-2016.06, Linaro GCC 5.4-2016.10, Linaro GCC 5.4-2016.12, Linaro GCC 5.4-2017.02 and Linaro GCC 5.4-2017.04 have been included. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.2-2015.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2015.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.01-1/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.02 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.03 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.04 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.06 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.10 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.12 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.02 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.04 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

8 years, 3 months

1
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[ACTIVITY] 15 - 19 May 2017

by Yao Qi

# Progress # * TCWG-178, confirm that longjmp.exp fails disappear on glibc with --enable-systemtap. [1/10] * GDB 8.0 release. TCWG-1050, [3/10] ** Fix a regression that command "tty" is missing. ** Review Thomas's patch handling non-FPU tests. Suggested to merge it to 8.0 branch. * Post my patches on gdb and objdump disassembler unification. [1/10] All binutils patches are approved. I'll push them in if no comments gdb side. * GDB target description changes. [4/10] People like my RFC, but Pedro requested the design and plan in GDBserver, because he has concern that my patch seres put GDB into an intermediate state. It will last a long time if we can't provide the design in GDBserver. * Upstream patches review. [1/10] Review 10~ patches about dwarf pieces. * Take care of Linux kernel awareness upstreams. Sync with Omair, and ask to ping to IBM to update their patches. # Plan # * Continue the GDB target description change discussions. * Push my approved patches. -- Yao Qi

8 years, 3 months

1
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[ACTIVITY] Week 20

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * Completed and deployed release automation job * Completed and deployed GCC 5, 6 and 7 2017.05 source snapshots * Completed stable release binaries (5.4 and 6.3 2017.05), ready for publication. * Preparing 7.1 2017.05 release candidate o Misc (3/10) * Various meetings and discussions. == Plan == o Finish 7.1 rc o Upstream monitoring reporting o Off Thursday and Friday

8 years, 3 months

1
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[ACTIVITY] 15 - 19 May 2017

by Diana Picus

== Progress == * [ARM GlobalISel] TableGen ISel for ADD/SUB [TCWG-1119] [1/10] - Committed upstream * [GlobalISel] AArch64 test-suite and self-host [TCWG-1074] [3/10] - Found that we can't self-host anymore with GlobalISel, we get a segfault in one of the tests - After investigations it turned out to be because we run out of stack space - Discussed upstream and did a couple more experimental runs with various other patches / flags * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] [3/10] - Work in progress on supporting arrays * Misc [3/10] - Meetings, mailing lists, buildbots - Investigated some timeouts that have started showing up in some of our buildbots; will probably have to wrap up next week == Plan == * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] * [GlobalISel] AArch64 test-suite and self-host [TCWG-1074]

8 years, 4 months

1
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[ACTIVITY] 15-19 May 2017

by Christophe Lyon

== Progress == * Infrastructure: - cleanup patches * Benchmarking: - runs on TK1 now OK too - polishing scripts * GCC: - preparing improvements for trunk validation (dejagnu upgrade, ...) * misc (conf-calls, meetings, emails, ....) == Next == * short week (Off Thursday/Friday)

8 years, 4 months

1
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[ACTIVITY] 15 - 19 May 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (6/10) - Reworked patch based on upstream feedback - Working through ICE's caused with the changes. * PR80806 (2/10) - Submitted patch upstream * type promotion (1/10) - Going thru Kugan's patch and mailing list discussions. * Misc (1/10) - Meetings == Next Week == - TCWG-1005, gcc bugs

8 years, 4 months

1
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[ANNOUNCE] Linaro GCC 5, 6 and 7 2017.05 source snapshots

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2017.05 snapshot of Linaro GCC 5, 6 and 7 source packages. o The GCC 7 series introduced an ABI change for ARM targets by fixing a bug (present since GCC 5, see link below) that affects conformance to the procedure call standard (AAPCS). The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected by this ABI change. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html o Linaro GCC 7 monthly snapshot[1] is based on FSF GCC 7.1+svn247824 and includes performance improvements and bug fixes backported from mainline GCC. The contents of this snapshot will be used for the first stable[2] quarterly release in the GCC 7 series. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 7.1+svn247824 * Backport of [AArch32] Allow combination of aprofile and rmprofile multilibs * Backport of [AArch32] Define TM_MULTILIB_CONFIG for ARM multilib * Backport of [AArch32] Rename FPSCR builtins to correct names * Backport of [AArch32] Set mode for success result of atomic compare and swap * Backport of [AArch64] Enable AUTOPREFETCHER_WEAK with -mcpu=generic * Backport of [AArch64] Improve address cost for -mcpu=generic * Backport of [AArch64] Update alignment for -mcpu=generic * Backport of [Testsuite] Require c99_runtime for pr78622.c o Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.3+svn247789 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the 2017.08 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 6.3+svn247789 * Backport of [Bugfix] [AArch32] PR target/71607: Fix ICE when loading constant * Backport of [AArch32] Add support for -mpure-code option * Backport of [AArch32] Enable Purecode for ARMv8-M Baseline * Backport of [AArch32] Fix arm-netbsdelf bootstrap * Backport of [AArch32] Fix pure-code test * Backport of [AArch32] Fix testism with pure-code tests for non Cortex-M targets * Backport of [AArch32] Fix type for .init_array.* and .fini_array.* sections * Backport of [AArch64] Fix type for 1-element load * Backport of [AArch64] Model Cortex-A53 load forwarding o Linaro GCC 5 monthly snapshot[1] is based on FSF GCC 5.4+svn247822 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the next maintenance release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 5.4+svn247822 o 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@

8 years, 4 months

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[ACTIVITY] 8 - 12 May 2017

by Peter Smith

Achievements: Spent all week on investigating a potential problem with the Gold --fix-cortex-a53-843419 erratum fix (The ADRP on 0xff8/0xffc boundary) - Managed to reproduce with a smaller example, although still using LTO - Diagnosed the cause of object with errata stubs being relocated after the stub table has been relocated -- Most likely to hit LTO as the object from the LTO plugin will always be last in the task queue, but the stub table is relocated when the object that "owns" it is relocated, this is often not the LTO object. -- In theory it should be reproducible without LTO and a linker script -- Workaround for LTO is to create an Output Section just for LTO (The stub table is always owned by the LTO object) Plans for next week: - See if I can reproduce Gold errata problem without LTO - Report Gold errata problem upstream - Get back to LLD range thunk work - Investigate SBREL32 relocation support in LLD, upstream PR32924 - Look at fixing missing Thumb2 modified immediate fixup PR28647

8 years, 4 months

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[ACTIVITY] Weeks 19

by Yvan Roux

* Day off (2/10) == Progress == o Linaro GCC/Validation (5/10) * GCC 5, 6 and 7 2017.05 source snapshots: - Completed backports - Troubleshot GCC 5 and 5 branch merges regressions * Re-working release automation job o Misc (3/10) * Various meetings and discussions. == Plan == o Complete monthly snapshots and releases o Continue release automation

8 years, 4 months

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[ACTIVITY] 8 - 12 May 2017

by Prathamesh Kulkarni

== This Week == * PR77644 (2/10) - Committed to trunk * PR78736 (1/10) - Upstream reviews * PR80613 (1/10) - Committed to trunk * TCWG-1005 (1/10) - Looking how to handle indirect calls * Sick leave (4/10) - Eye infection * Misc (1/10) - Meetings == Next Week == - TCWG-1005, TCWG-1129, gcc bugs

8 years, 4 months

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[ACTIVITY] 8-12 May 2017

by Christophe Lyon

Short week (1 day off) == Progress == * Infrastructure: - patch reviews - worked around regression-detection failures caused by some tests in tcwg-regression - added job to check our gcc-7 toolchain when a component is updated * Benchmarking: - troubleshooting systems configs - at last, first run on aarch64 triggered via jenkins * Snaphots - backports & reviews * GCC: - reported a few regressions upstream * misc (conf-calls, meetings, emails, ....) == Next == * benchmarking

8 years, 4 months

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[ACTIVITY] 8 - 12 May 2017

by Diana Picus

== Progress == * Remove environment variables [TCWG-1114] [1/10] - Committed * [ARM GlobalISel] TableGen ISel for ADD/SUB [TCWG-1119] [5/10] - Committed a change to the legalizer so that we widen narrow operations (since we only have patterns for the 32-bit versions) - Committed support for G_ANYEXT, which is introduced by the legalizer while widening things and which we need to handle in the rest of the pipeline - Have a patch in upstream review fixing a TableGen bug * [GlobalISel] AArch64 test-suite and self-host [TCWG-1074] [2/10] - Ran the test-suite and self-host on AArch64 for GlobalISel -O0 - Committed a tiny fix for a test-suite application that was failing because GlobalISel doesn't lower fabs to hardware operations, so we had to link with -lm * Misc [2/10] - Buildbots (reverted stuff), meetings, mailing lists - Helped organize another LLVM social in Stockholm; we got really good feedback so far == Plan == * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] * Other GlobalISel stuff * Probably wrap up TCWG-1074, we're really close to making the switch

8 years, 4 months

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[ACTIVITY] 08 - 12 May

by Yao Qi

# Progress # * GDB 8.0 release. TCWG-1050, [1/10] Nothing new. Make sure Linaro GCC 7 release can pick up GDB 8. * SVE GDB. TCWG-1040, [6/10] ** Finish sve gdb target description doc, and send it to Alan. The work needed in GDB side becomes more and more clear, however, it is still unclear in GDBserver side. ** Post my patches about unit test to value/register conversion gdbarch hooks. ** Post my RFCs to make GDB target descriptions more flexible. * Misc, [3/10] ** Learn C++ template. ** Some patches review upstream. # Plan # * Upstream my GDB disassembler patch, which unify the disassembler selection in both gdb and objdump. * Back to the work on handling function pointer assignment in thumb mode. TCWG-333. -- Yao Qi

8 years, 4 months

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[ACTIVITY] Weeks 18

by Yvan Roux

* Day off (2/10) == Progress == o Linaro GCC/Validation (5/10) * Release Automation: - 6.3 2017.05 RC1: Done - Preparing Linaro GCC 7 snapshot and RC * Backport for 2017.05 source snapshots * Reviews... o Misc (3/10) * Various meetings and discussions. == Plan == o Make 2017.05 snapshots (6 and 7) o Continue release automation

8 years, 4 months

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[ACTIVITY] 1 - 5 May 2017

by Peter Smith

Progress: - Re-implemented range thunks based on recent upstream changes and sent for review. No comments as yet. This is likely to be an ongoing conversation with upstream that won't take all my time up so I've been looking at some additional stuff outside of range thunks. - Looked at PR28647 in llvm-mc, preventing openssl from being compiled with clang. Investigated to the point where I know what we should do next to fix. Next steps will be implementation. - Looked into a problem reported internally in ARM in gold's erratum --fix-cortex-a53-843419 on a large program using LTO. The patch is not being applied correctly leading to segfaults at run-time. This is likely to take some time to pin down as simple attempts to reproduce have failed. There is an upstream PR reporting a similar set of symptoms that looks like it could be the same thing but there is no useful information or investigation in it: https://sourceware.org/bugzilla/show_bug.cgi?id=21062 - Looked into lld PR32924, someone asking for RWPI support in lld, someone at least is keen to get embedded systems support into lld. Plans: - Continue looking into above PRs

8 years, 4 months

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[ACTIVITY] 1 - 5 May 2017

by Diana Picus

== Progress == * Monday off [2/10] * [ARM GlobalISel] Use TableGen for inst selector [TCWG-1037] [1/10] - Committed upstream * Remove environment variables [TCWG-1114] [1/10] - Almost ready to send another patch for review * Lund Linux Conference [6/10] == Plan == * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] * Other GlobalISel stuff

8 years, 4 months

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[ACTIVITY] 1-5 May

by Yao Qi

* Monday off. [2/10] # Progress # *GDB 8.0 release, TCWG-1050. [2/10] ** Intel btrace python api patches are pushed in, and all intel specific stuff are removed from the python apis before release, Phew! ** GDBserver arm-linux software single step. More issues are found, can't catch 8.0 release. ** 8.0 release candidate is created. * SVE, TCWG-1040, [5/10] ** All my regcache class-fy patches are committed. Unblock some Alan's patches. ** One patch review. ** Post preparatory patches for my value/register conversion unit test patches. ** Think about how to change GDB target descriptions for SVE, and write them down. Turns out these problems are not specific to SVE, they are already there but SVE make them worse that we should fix. Ongoing. * Upstream review, [1/10] ** Review one kernel-awareness patch. ** Review OpenRISC GDB patches. # Plan # * Finish the doc about GDB target description changes for SVE, and send it to Alan. * Upstream my patches about unit test to value/register conversion gdbarch hooks. * Upstream my GDB disassembler patch, which unify the disassembler selection in both gdb and objdump. -- Yao Qi

8 years, 4 months

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[ACTIVITY] 1-5 May 2017

by Christophe Lyon

Short week (1 day off) == Progress == * Infrastructure: - patch reviews * Benchmarking: - troubleshooting systems configs * GCC: - reported a few regressions upstream * misc (conf-calls, meetings, emails, ....) == Next == * benchmarking * Monday off

8 years, 4 months

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[ACTIVITY] 1 - 5 May 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (4/10) - Made some improvements to analysis, which increased candidates for malloc functions in gcc source. - Patch review from Kugan * PR78736 (2/10) - Submitted upstream for review * PR80613 (2/10) - Submitted patch but was rejected by Richard - "Fixed" the bug by partially reverting the commit that caused it. * Validation (1/10) - Committed patch to tcwg-buildapp for adding python source. * Misc (1/10) - Meetings == Next Week == - TCWG-1005, GCC bugs, validation

8 years, 4 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 6.3-2017.05-rc1

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 6.3-2017.05-rc1 Release-Candidate is now available. The GCC 6 Release series has significant changes from the GCC 5 release series. For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-6/changes.html For help in porting to GCC 6 please see the following explanation: https://gcc.gnu.org/gcc-6/porting_to.html Download release-candidate packages from: (sources) http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05-rc1/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/6.3-2017.05-rc1/ 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/ A description of the arm and Aarch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 6.3-2017.05-rc1 http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05-rc1/ Linaro glibc 2.23 (linaro/2.23/master) https://lists.gnu.org/archive/html/info-gnu/2016-02/msg00009.html Linaro newlib 2.4-2016.03 (linaro_2.4-branch) https://sourceware.org/ml/newlib/2016/msg00370.html Linaro binutils 2.27 (linaro-local/linaro_binutils-2_27-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… Linaro GDB 7.12 (gdb-7.12-branch) https://lists.gnu.org/archive/html/info-gnu/2016-10/msg00007.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 6 (as of Linaro GCC 6.3-2017.05-rc1) ================================================== * Previous versions of the Linaro GCC 6 toolchain, when -static -E/—dynamic-list are passed to the linker, might create executables with dynamic sections which aren’t supported by run-time. This was exhibited in Perf Tools build system and has been fixed upstream and backported into Linaro Binutils 2.27 branch. Linaro bugzilla #2926 : Perf tools compiled statically for AArch64 with Linaro release 6.1 and later ones was not statically linked. https://bugs.linaro.org/show_bug.cgi?id=2926 * The Linaro GCC 6.3-2017.03 snapshot fixed some ILP32 issues (TLS, exception handling, …) and these have been incorporated into this release. * Previous versions of the Linaro GCC 6 toolchain were incorrectly generating floating-point code for soft-float Linux targets (arm-linux-gnueabi, and armeb-linux-gnueabi). This escaped detection until recently because the soft-float targeted toolchains were configured to use general-purpose registers for passing floating-point values (which is what you would expect for soft-float toolchains) and the intra-routine floating-code was not noticed. The issue would only show up on targets that were run on hardware that truly didn't have floating-point hardware where the kernel did not trap and emulate floating-point routines. This has been solved in Linaro GCC 6.3-2017.02-rc2 by configuring the toolchain (using --with-float=soft) to generate code without any floating-point instructions at all (-mfloat-abi=soft). https://review.linaro.org/#/c/16968/2 This change should not break compatibility between existing binaries compiled with these toolchains since the float-point parameter passing ABI is still the same. * A bug/regression in the compiler has been identified whereby the target function that is invoked when calling a "weak" function directly is the "strong" override, whereas when calling the function via a pointer the "weak" implementation is used. This would be noticed as inconsistent function invocation when invoking directly vs. invoking via function pointer. This issue only affected 32-bit arm targets. This regression has been fixed upstream and backported into Linaro GCC 6.3-2017.02-rc2. GCC PR target/78253: [5/6/7 Regression] [ARM] call weak function instead of strong when called through pointer. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78253 Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * MS Windows does not support symlinks and the MS Windows archive extractor does not properly deep copy the symlink target files/directories into the symlinked directory structure when unpacking the toolchain archive. This causes problems with missing dependencies when using the Linaro mingw toolchains, as identified in the following bugs: https://bugs.linaro.org/show_bug.cgi?id=2684 https://bugs.linaro.org/show_bug.cgi?id=2192 https://bugs.linaro.org/show_bug.cgi?id=2762 This has been solved by copying files rather than using symlinks when the mingw targetted toolchain archives are created. https://review.linaro.org/#/c/16415/ * Users of Linaro's toolchain have encountered problems when building projects with Autotools (specifically libtool): https://bugs.linaro.org/show_bug.cgi?id=2764 The Linaro binary toolchain release contained files with a .la suffix as artifacts of the toolchain build process. These .la files are helper files for libtool, but unlike a gcc install tree, they are not position independent and contain full paths. Since these artifacts contain absolute paths they can actually mislead user invocation of libtool into not finding required libraries (because they reference the build tree, not the install location) and hence breaking Autotools builds. These *.la file artifacts have been removed from Linaro toolchain binaries because they are unnecessary for users. * The Linaro GCC 6.3-2017.01 snapshot added further enablement for ARMv8-M and these have been incorporated into this release. * Compiling and statically linking some SPEC2006int tests against tcmalloc have been failing due to a problem with glibc's memory allocator function overrides. This was fixed upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=20432 Backported into Linaro glibc 2.23: commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer <fweimer(a)redhat.com> Date: Fri Aug 26 22:40:27 2016 +0200 malloc: Simplify static malloc interposition [BZ #20432] * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 1.5G to 600M for aarch64-linux-gnu target with the gcc-6-branch. * The GDB version was upgraded from GDB 7.11 in the Linaro GCC 6.1-2016.08 release to GDB 7.12 in the Linaro GCC 6.2-2016.11 release. * The Linaro GCC 6.2-2016.10 snapshot added AArch32 support for ARMv8.2 and ARMv8m, as well as some AArch64 fixes for ARMv8.2, and bug fixes merged from FSF GCC 6.2. This is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * Basic tuning support for the Qualcomm qdf24xx was added to the Linaro GCC 6.2-2016.10 snapshot and is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * IFUNC was disabled for baremetal targets, as it was causing test-suite failures, and is presently a Linux only feature. * The gold linker was added to this binary release. * Backported malloc_lock fix into Linaro newlib 2.4. commit 2665915cfc46aa6403bb2efd473c523d3167e0cb Author: Andre Vieira (lists) <Andre.SimoesDiasVieira(a)arm.com> Date: Thu Jun 16 12:23:51 2016 +0100 Re-enable malloc_lock for newlib-nano * Backported rawmemchr patch into Linaro newlib 2.4. commit e7b1ee2ea6aa3ee1da41976407410e6202a098c5 Author: Wilco Dijkstra <Wilco.Dijkstra(a)arm.com> Date: Thu May 12 16:16:58 2016 +0000 Add rawmemchr * Backported strlen fix when using Thumb-2 and -Os -marm into Linaro newlib 2.4. commit 5c02bcc086a96b174e1b9e1445a4a1770070107a Author: Thomas Preud'homme <thomas.preudhomme(a)arm.com> Date: Wed May 11 17:18:48 2016 -0400 Fix strlen using Thumb-2 with -Os -marm * Backported fix for semihosting ARM when heapinfo not provided by debugger into Linaro newlib 2.4. commit 5c9403eaf40951f8a4f55ed65f661b485ff44be7 Author: David Hoover <spm2(a)dangerous.li> Date: Thu Apr 21 07:12:24 2016 +0200 Fixed semihosting for ARM when heapinfo not provided by debugger. * Merged latest FSF glibc release/2.23/master into Linaro glibc 2.23. * Backported __ASSUME_REQUEUE_PI check Linaro glibc 2.23 branch. commit 2d20c3bf918cd94ebd4106693adb3a5c9272baba Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) * Backported removal of __ASSUME_SET_ROBUST_LIST from Linaro glibc 2.23 branch. commit bb8f09d72756186a3d82a1f7b2adcf8bc1fbaed1 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST * Backported removal of __ASSUME_FUTEX_LOCK_PI from Linaro glibc 2.23 branch. commit e48b4e7fed0de06dd7832ead48bea8ebc813a204 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Merged latest FSF binutils-2_27-branch into linaro_binutils-2_27-branch. * The libwinpthread DLL is now copied into the host bin directory to satisfy mingw package dependencies. * Backported GNU Linker fix. commit fbc6c6763e70cb2376e2de990c7fc54c0ee44a59 Author: Nick Clifton <nickc(a)redhat.com> Date: Tue Aug 23 09:45:11 2016 +0100 Fix seg-fault in ARM linker when trying to parse a binary file. * Backported GNU Assembler fix for PR 20364 commit 5fe7ebe5ab43750abf8f490b785d99a1e598e7fd Author: Nick Clifton <nickc(a)redhat.com> Date: Fri Aug 5 10:37:57 2016 +0100 Fix the generation of alignment frags in code sections for AArch64. https://sourceware.org/bugzilla/show_bug.cgi?id=20364 * Performance related backports from the following snapshots have been included: Linaro GCC 6.1-2016.06, Linaro GCC 6.1-2016.07, Linaro GCC 6.1-2016.08, Linaro GCC 6.2-2016.09, Linaro GCC 6.2-2016.10, Linaro GCC 6.2-2016.11, Linaro GCC 6.2-2016.12, Linaro GCC 6.3-2017.01, Linaro GCC 6.3-2017.02, Linaro GCC 6.3-2017.03 and Linaro GCC 6.3-2017.04. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.06/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.07/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.08/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.09/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.10/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.01/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.03/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.04/ 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

8 years, 4 months

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[ACTIVITY] 24 - 28 April

by Yao Qi

# Progress # * TCWG-1050, GDB 8.0 release. [4/10] ** Fix the new fails about the size of wchar_t on aarch64, by setting it to 4 in default. Patch is pushed to master and 8.0 branch. ** Intel btrace python api patches are ready to commit. No idea why he doesn't push yet. * TCWG-1040, Review SVE patches. [4/10] ** Review some SVE GDB patches, and approved part of them. Leave the controversial part there. Some of them are blocked by my Class-fy regcache patches. ** Class-fy regcache. Patches are approved. Will push them in later. Then, I'll update my unit test to value/register conversion gdbarch hooks, and post them next week. ** GDB target description change, the preparation for adding more hardware features, like PAUTH and SVE, and their arbitrary combinations. GDB side changes are done, and take i386-linux as an example to demonstrate the the benefit of the changes. * Misc, [2/10] ** Rebase my GDB disassembler patch, which unify the disassembler selection in both gdb and objdump. ** Explain the GDB behavior to Linaro kernel guy who is working on single-step in kgdb. ** Read some paper on dynamic slicing, and think about how to do it on GDB for aarch64/arm. # Plan # * Holiday on Monday. * Review kernel-awareness patches, * Upstream my patches about unit test to value/register conversion gdbarch hooks. * Post my GDB target description change as an RFC, collect comments, and think about the changes in GDBserver side (which is harder). -- Yao Qi

8 years, 4 months

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[ACTIVITY] Weeks 17

by Yvan Roux

* Day off (2/10) == Progress == o Linaro GCC/Validation (5/10) * Release Automation: - 5.4 2017.05 RC1: Done - 6.3 2017.05 RC1: still on-going - Re-worked publication part of the process * Debug Binutils instablities * Reviews, backport, ... o Misc (3/10) * Various meetings and discussions. == Plan == o Complete 6.3 RC1 o Make Linaro GCC 7 RC o Continue release automation

8 years, 4 months

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[ACTIVITY] 24 - 28 April 2017

by Diana Picus

== Progress == * [ARM GlobalISel] Support div [TCWG-1103] [1/10] - Committed upstream * [ARM GlobalISel] Fix fallback path [TCWG-1110] [2/10] - Fixed and committed another issue * [ARM GlobalISel] Fix loading i<32 from the stack [TCWG-1065] [2/10] - Committed upstream * Remove environment variables [TCWG-1114] [1/10] - Committed a first patch towards fixing this * Misc [4/10] - Meetings, mailing lists, code reviews - Minor GlobalISel cleanups - Put up a cron job on llvm-tk1-test-02 to track GlobalSel TableGen'erated code for ARM and AArch64 == Plan == * Out of office on Monday * [ARM GlobalISel] Use TableGen for inst selector [TCWG-1037] * [ARM GlobalISel] Add support for struct / array args [TCWG-1033] * Maybe finish TCWG-1114

8 years, 4 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 5.4-2017.05-rc1

by Yvan Roux

The Linaro Binary Toolchain ============================ The Linaro GCC 5.4-2017.05-rc1 Release-Candidate is now available. Notice: All Linaro GCC 5 series toolchain users should migrate to the latest version of the Linaro GCC 5 toolchain in order to mitigate potential security exposure to CVE-2015-7547. See the NEWS section below for details. Download release-candidate packages from: (sources) http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05-rc1/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/5.4-2017.05-rc1/ 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/ A description of the arm and Aarch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 5.4-2017.05-rc1 http://releases.linaro.org/components/toolchain/gcc-linaro/5.4-2017.05-rc1/ Linaro glibc 2.21 (linaro/2.21) https://lists.gnu.org/archive/html/info-gnu/2015-02/msg00001.html Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) https://sourceware.org/ml/newlib/2013/msg01128.html Linaro binutils 2.25 (linaro_binutils-2_25-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 7.12 (gdb-7.12-branch) https://lists.gnu.org/archive/html/info-gnu/2016-10/msg00007.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 5 (as of Linaro GCC 5.4-2017.05-rc1) ================================================== * Include GCC fix for Linaro bugzilla #2785: Internal compiler error using -mtune=cortex-a57.cortex-a53. https://bugs.linaro.org/show_bug.cgi?id=2785 * The soft-float targeted toolchains have now been configured to generate code using -mfloat-abi=soft. This makes arm-linux-gnueabi and armeb-linux-gnueabi toolchains use the “soft” FP ABI instead of “softfp”. Historically, TCWG’s toolchains provided both “soft” and “softfp” multilibs, but when switching from crosstool-ng to cbuildv2/abe (which support a single multilib) “softfp” multilib was choosen. Using “-mfloat-abi=soft” is a better choice for a gnueabi toolchain, since it doesn’t require cores to have a floating-point unit. This change should not break compatibility for toolchain users since the ABI will stay the same. The compiler and glibc libraries will not refernce FP instructions. * Include GCC fix for Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * Include GCC fix for Linaro bugzilla #1925: [regression] FAIL: libgomp.fortran/retval1.f90 -O1 execution test https://bugs.linaro.org/show_bug.cgi?id=1925 * Include GCC fix for Linaro bugzilla #2185: aarch64-linux-gnu-g++ internal compiler error: in curr_insn_transform https://bugs.linaro.org/show_bug.cgi?id=2185 * Backported glibc patch to simplify static malloc interposition [BZ #20432] to correct user identified issue. commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer Date: Fri Aug 26 22:40:27 2016 +0200 malloc: Simplify static malloc interposition [BZ #20432] * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 1.1G to 580M for aarch64-linux-gnu target with the gcc-5-branch. * Removed .la files from binary toolchain archive as these files break autotools builds. https://bugs.linaro.org/show_bug.cgi?id=2764 * The mingw toolchains are now archived using the rsync -L option in order to avoid problems with Windows extractors and symbolic links. https://review.linaro.org/#/c/16415/ This resolves the following user bugs: https://bugs.linaro.org/show_bug.cgi?id=2684 https://bugs.linaro.org/show_bug.cgi?id=2192 https://bugs.linaro.org/show_bug.cgi?id=2762 * Copy the libwinpthread DLL into the bin directories so it gets into the tmp directory before tar is run. https://review.linaro.org/#/c/13723/ * Increment binutils release date to 2016_02 to reflect the most recent commit: commit ef90a4718f535cbe6345b4e7168baea7b1972abf Author: Matthew Wahab <matthew.wahab(a)arm.com> Date: Tue Jan 12 16:35:30 2016 +0000 [ARM] Support ARMv8.2 RAS extension. * Baremetal sysroot names now contain 'newlib' rather than 'glibc'. * Manifests now contain relative paths rather than absolute paths. * Now generating proper manifest files. * Fixed pi requeue support in glibc 2.21 while allowing the existing 2.21 minimum kernel default setting. This was checked into the linaro/2.21/master branch. commit a68cafa11c500d8a49a3014c43c5152859d037ae Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) commit 6e5cb616b5b442ce8b2664ad673c0acf42a490ac Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST commit 9ac61c0047295696cbcdbc26bdc174c7bd25a3c8 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Backported support into GCC for Cortex-A32, Cortex-A35, and Cortex-R8. * Applied fix for CVE-2015-7547 - A stack-based buffer overflow in glibc's getaddrinfo() was corrected in glibc 2.23 and backported into glibc 2.21. https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html * ARMv8.1 Instruction Support - ARMv8.1 instructions support was checked into GCC and binutils. It has been backported into Linaro GCC 5.3 and Linaro binutils 2.25. * Backported -Bsymbolic-functions into Linaro binutils 2.25. * Performance related backports from Linaro GCC 5.2-2015.11, Linaro GCC 5.2-2015.12, and Linaro GCC 5.3-2016.01-1, Linaro GCC 5.3-2016.02, Linaro GCC 5.3-2016.03, Linaro GCC 5.3-2016.04, Linaro GCC 5.4-2016.06, Linaro GCC 5.4-2016.10, Linaro GCC 5.4-2016.12, Linaro GCC 5.4-2017.02 and Linaro GCC 5.4-2017.04 have been included. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.2-2015.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2015.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.01-1/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.02 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.03 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.04 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.06 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.10 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.12 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.02 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.04 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

8 years, 4 months

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[ACTIVITY] 24-28 April 2017

by Christophe Lyon

Short week (3 days off) == Progress == * Infrastructure: - patch reviews * Benchmarking: - troubleshooting systems configs * misc (conf-calls, meetings, emails, ....) == Next == * short week: Off Monday * benchmarking

8 years, 4 months

1
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[ACTIVITY] 17 - 21 April

by Yao Qi

* Two days off, Mon and Tue [4/10] # Progress # * TCWG-1050, GDB 8.0 release. [2/10] 8.0 branch is created. Intel btrace python api patches are almost OK push to master and 8.0 branch. Patches should be pushed in soon. * TCWG-1040, Review SVE patches. [3/10] Write unit test to value/register conversion gdbarch hooks. C++-fy regcache so that I can easily verify the result in unit test. Still some fails, need to investigate further. They are needed to prove SVE changes are correct. * Upstream patches review [1/10] ** arm software single step patch review. There is still an open issue that the author didn't realize, that is, GDB has to understand there may be different kind of breakpoints on the same address. * Propose deprecate arm fpa support in GDB. I need to post the proposal in gdb-announce(a)sourceware.org this week, according to the deprecation process. # Plan # * Finish my unit test and post them for review (with regcache C++-fy patch). * Other issues on 8.0 release if any. -- Yao Qi

8 years, 4 months

1
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[ACTIVITY] Weeks 16

by Yvan Roux

* Public Holiday (2/10) == Progress == o Linaro GCC/Validation (5/10) * Release Automation: - Deployed job to create snapshots/releases tags - Working on the missing jobs to complete automation process * GCC 7 preview release: - Mingw builds fixed after revert - Merged upstream GCC 7 and built binaries - Preapring Linaro GCC 7 branch o Misc (3/10) * Various meetings and discussions. == Plan == o Finalized 2017.05 RCs o Continue release automation

8 years, 4 months

1
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[ACTIVITY] 17 - 21 April 2017

by Diana Picus

== Progress == * Out of office on Monday [2/10] * [ARM GlobalISel] Investigate divmod [TCWG-1086] - Broke this up into several smaller stories * [ARM GlobalISel] Support sub and mul [TCWG-1104] [1/10] - Committed upstream * [ARM GlobalISel] Support trunc [TCWG-1109] [1/10] - Committed upstream * [ARM GlobalISel] Support div [TCWG-1103] [2/10] - Mostly done, will upstream next week * [ARM GlobalISel] Fix fallback path [TCWG-1110] [2/10] - Oliver from ARM has started running csmith with GlobalISel and is finding several issues - Fixed one of them and committed upstream - Will commit another one next week * Misc [2/10] - Meetings, mailing lists, code reviews, buildbots - Minor cleanup in the ARM backend (renamed a subtarget feature to avoid future misuse) == Plan == * [ARM GlobalISel] Fix fallback path [TCWG-1110] * [ARM GlobalISel] Support div [TCWG-1103] * Resume [ARM GlobalISel] Use TableGen for inst selector [TCWG-1037]

8 years, 4 months

1
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[ACTIVITY] 19 - 21 April 2017

by Peter Smith

3 day week,Monday and Tuesday off Achievements: [TCWG-614] Range Thunks - No review progress, blocked on a request for some refactoring to unify the address allocation. - Reworked my downstream patch stack in light of TCWG-1088 below. - Spent some time refactoring the code to try and make it easier to follow. [TCWG-1088] Refactoring of address assignment - Committed first patch reviewed last week - Sent out first couple of patches, no response from upstream, I'm hoping this is due to maintainers being on Easter holiday. Some upstream review on ILP32 patches. Plans for next week: - 2 day week, at ACCU2017 conference Wednesday to Friday. - Respond to any upstream review comments. - Find some small tasks to do to fit in the remainder of the time. Planned Absences - ACCU2017 next week (Wednesday to Friday)

8 years, 4 months

1
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[ACTIVITY] 17 - 21 April 2017

by Prathamesh Kulkarni

== This Week == * PR79697 (2/10) - Updated patch on top of trunk, passes validation. * PR79715 (2/10) - Updated patch according to upstream feedback, passes native bootstrap * TCWG-1010 (4/10) - Playing with LLVM's bit-tracking DCE pass - WIP prototype * TCWG-1111 (1/10) - WIP patch * Misc (1/10) - Meetings == Next Week == - Submit and address upstream reviews for PR79697 and PR79715 - Submit malloc attr propagation for upstream review - TCWG-1111 - Try to resolve review 18103 (overriding cc/cxx)

8 years, 4 months

1
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[ACTIVITY] 17-21 April, 2017

by Christophe Lyon

Monday off == Progress == * Infrastructure: - (lots of) patch reviews * Validation: - added tests to tcwg-regression - kernel-ci followup - binutils jenkins job: removed obsolete configs * Benchmarking: - updated patches, troubleshooting systems configs * GCC - finally succeeded to bootstrap gcc-5 on armv7 / backported fix for pr68390 - created setup for gcc-7-branch regression testing (in ST) * misc (conf-calls, meetings, emails, ....) == Next == * short week: Off Wed/Thu/Fri * benchmarking

8 years, 4 months

1
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Error: unknown pseudo-op: `.arch_extension'

by Jeffrey Walton

I'm working on my HiKey. I'm trying to enable CRC extension on ARMv8 in the assembler regardless of the way GCC was built, and regardless of the user's CFLAGS and CXXFLAGS. I'm encountering an assembler error: "unknown pseudo-op: `.arch_extension'". According to [1], I can use ".arch_extension" to enable it. According to [2], ".arch_extension" is available in GCC 4.6 and GAS 2.21. My version of Linaro provides GCC 4.9.2 and GAS 2.25.90. I can also duplicate the issue on GCC113 (compiel farm), which provides GCC 4.8 and GAS 2.24. The test program is below. Trying to compile it results in: $ g++ test.cxx -c /tmp/ccVZ6hiq.s: Assembler messages: /tmp/ccVZ6hiq.s:24: Error: unknown pseudo-op: `.arch_extension' /tmp/ccVZ6hiq.s:25: Error: selected processor does not support `crc32b w1,w0,w0' Trying to compile without ".arch_extension" results in: $ g++ test.cxx -c /tmp/cci4wu6d.s: Assembler messages: /tmp/cci4wu6d.s:24: Error: selected processor does not support `crc32b w1,w0,w0' Its almost as if ".arch_extension" is not being properly recognized or consumed. Any ideas what might be going wrong here? ********** The program: $ cat test.cxx #include <arm_neon.h> #define GCC_INLINE_ATTRIB __attribute__((__gnu_inline__, __always_inline__, __artificial__)) #if defined(__GNUC__) && !defined(__ARM_FEATURE_CRC32) __inline unsigned int GCC_INLINE_ATTRIB CRC32B(unsigned int crc, unsigned char v) { unsigned int r; asm (" \n" ".arch_extension crc \n" "\t" "crc32b %w2, %w1, %w0 \n" : "=r"(r) : "r"(crc), "r"((unsigned int)v)); return r; } #else // just use the instrinsic # define CRC32B(a,b) __crc32b(a,b) #endif int main(int argc, char* argv[]) { return CRC32B(argc, argc); } ********** Versions... $ gcc --version gcc (Ubuntu/Linaro 4.8.4-2ubuntu1~14.04.3) 4.8.4 $ as -v GNU assembler version 2.24 (aarch64-linux-gnu) using BFD version (GNU Binutils for Ubuntu) 2.24 $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.5 LTS Release: 14.04 Codename: trusty [1] https://sourceware.org/binutils/docs/as/AArch64-Directives.html#AArch64-Dir… [2] https://gcc.gnu.org/ml/gcc-help/2012-07/msg00180.html

8 years, 5 months

2
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[ACTIVITY] Weeks 15

by Yvan Roux

* Child care (2/10) == Progress == o Linaro GCC/Validation (5/10) * Released GCC 5 and 6 Linaro source sanpshots * Progressing on release automation * Preparing GCC 7 preview release: - found a build issue for mingw toolchains - proposed a fix upstream, discussion on-going. o Misc (3/10) * Various meetings and discussions. == Plan == o Continue release on automation and prepare 2017.05 RC

8 years, 5 months

1
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[ACTIVITY] 10-14 April 2017

by Christophe Lyon

== Progress == * Validation - kernelci/lava-ci scripts update broke my prototype. We need more discussion at this point. - benchmarking scripts, debugging with Jenkins - reviews * GCC - reported a regression on trunk after an LRA fix, now fixed by Vladimir. - bootstrapping gcc-5 on armv7 (using present continuous because it's taking so long) - Linaro bugzilla * misc (conf-calls, meetings, emails, ....) == Next == * Validation? * Benchmarking: debug scripts/jenkins/board setup * Off Monday 17th

8 years, 5 months

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[ACTIVITY] 10 - 14 April 2017

by Peter Smith

[TCWG-614] Range Thunks - No review progress, blocked on a request for some refactoring to unify the address allocation. [TCWG-1088] Refactoring of address assignment - Found out that linker scripts can break ARM exceptions in the same way as they can break the thunk insertion - Made a prototype of unified address allocation that is good enough for the current interworking range thunks. This passes the existing test case that I made to show that linker scripts could break the Mips LA25 thunk placement. [TCWG-1089] Fixed problem with ARM exceptions and identical code folding Plans for next week: On Holiday Tuesday [TCWG-1088] Polish up patches and send for review. Planned Absences: Tuesday 18th April Wednesday - Friday 27 - 29 April ACCU 2017

8 years, 5 months

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[ACTIVITY] 10th -- 14th April

by Yao Qi

# Progress # * TCWG-1050, GDB 8.0 release. [4/10] Release branch is not created, but a lot of C++ patches are posted, and massively change the code even when release is coming. ** Fix PR 19942, patch v2 is OK. Committed. ** Intel btrace python interface. Intel people posted patches to adjust the interface as I requested. Reviewing them. They look much better. * TCWG-1040, Review SVE patches. [4/10] SVE patches review. Read Alan's patches and various GDB backends, like mips, xtensa, and ia64. Feel nervous to approve them because we have no way testing them. Figure out a unit test to related methods, and it works well if I build GDB with ASAN. This unit test does find some existing issues, and patches are posted. In order to make the test more useful, need to C++-fy regcache, not a small piece of work. * Upstream reviews [2/10] ** Software single-step on arm-non-eabi. Convince the author that his patch will break GDB's default behavior, and give some thoughts on fixing it. ** Propose to deprecate ARM FPA in GDB. So far, I am not clear what is the "right" process to deprecate features in GDB. (I know how to deprecate ports and commands). ** Some one complains GDB can't unwind from arm64 kernel irq vector, which is hand written asm. The fix should be using .cfi directives to annotate them, however, they want GDB to error out if it can't unwind. I am suggested to ask in linux-arm-kernel(a)lists.infradead.org about the expected behavior. Will do next week. # Plan # * Mon and Tue off. * Figure out more ways to test code touched by SVE patches. Convert regcache to class if necessary. -- Yao Qi

8 years, 5 months

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[ACTIVITY] 10 - 14 April 2017

by Diana Picus

== Progress == * Out of office on Friday [2/10] * [ARM GlobalISel] Add support for soft float targets [TCWG-1039] [2/10] - Committed G_FPOW and G_FADD upstream - Most of the other soft float libcalls are just a matter of boilerplate * [GlobalISel] Investigate divmod [TCWG-1086] [5/10] - Working on a patch to support G_(S|U)REM in GlobalISel - Found an inconsistency in DAGISel, sent a patch upstream * Misc [1/10] - Mailing lists, meetings - Buildbot monitoring (did a bisection, reverted a few patches) == Plan == * Out of office on Monday * Send patch for TCWG-1086

8 years, 5 months

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[ANNOUNCE] Linaro GCC 5 and 6 2017.04 snapshots

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2017.04 snapshot of both Linaro GCC 5 and Linaro GCC 6 source packages. Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.3+svn246668 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the 2017.05 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.04/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 6.3+svn246668 * Backport of [Bugfix] [AArch32] PR target/71436: Restrict *load_multiple pattern till after LRA * Backport of [Bugfix] [AArch32] PR target/79911: Invalid vec_select arguments * Backport of [Bugfix] [AArch64] PR target/79889: Error message on target attribute on aarch64 * Backport of [Bugfix] [AArch64] PR target/79913: VEC_SELECT bugs in aarch64 patterns * Backport of [Bugfix] [AArch64] PR target/79925: tweaks to quoting in error messages * Backport of [AArch32] Fix small multiply feature * Backport of [AArch64] Enable AES fusion with -mcpu=generic * Backport of [AArch64] Fix bootstrap due to wide_int .elt (0) uninit warning * Backport of [AArch64] Fix incorrect INS in SIMD mov pattern * Backport of [AArch64] Fix search_line_fast for aarch64/ILP32 * Backport of [AArch64] Fix typo in aarch64.opt (dummping -> dumping) * Backport of [AArch64] Improve cost model for ThunderX2 CN99xx * Backport of [AArch64] Improve generic branch cost * Backport of [AArch64] more poly64 intrinsics and tests * Backport of [AArch64] Use 'x' constraint for vector HFmode multiplication by indexed element instructions Linaro GCC 5 monthly snapshot[1] is based on FSF GCC 5.4+svn246667 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the next maintenance release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.04/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 5.4+svn246667 ** 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] Source package snapshots are defined when the compiler is only put through unit-testing and full validation is not performed. [2] Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed.

8 years, 5 months

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[ACTIVITY] April 03 -- April 07

by Yao Qi

~ Progress ~ * TCWG-1050, GDB 8.0 release. [4/10] Release branch is not created, but test result looks good. ** Fix PR 19942, patch v2 is OK. Need to fix some nits before check in. ** Intel btrace python interface discussion. Good to see that Intel people accept my suggested new interface, and finalize the details of the new interface. * TCWG-1040, Review SVE patches. [4/10] The overall goal is to remove MAX_REGISTER_SIZE. Reviewed some Alan's patches, and wrote two patches to remove MAX_REGISTER_SIZE in frame.c and regcache.c. * Misc, meeting, [2/10] ~ Plan ~ * More remote tests for GDB 8.0 release. * SVE patches review, and start to think about GDB target description changes for SVE. * Public holiday on Friday and next Monday. -- Yao Qi

8 years, 5 months

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[ACTIVITY] 3 - 7 April 2017

by Peter Smith

== Progress == [TCWG-614] Long Range Thunks - Posted for upstream review. I may have to do some refactoring of the address allocation first to unify the linker-script and non linker-script cases. - Started work on a prototype that fabricates linker script commands for the default non linker-script case. Failing 7 tests of 1007 and it is a mess so some work to do here. [TLS] Fixed recent breakage in ARM TLS caused by change in the way that values are written to the GOT. == Plans == Progress the prototype address allocation far enough to post upstream for comment, I think that this is likely to take a few iterations to get right. == Planned Absences == ACCU 2017 27-29 April

8 years, 5 months

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[ACTIVITY] Weeks 13/14

by Yvan Roux

* Child care and sick leave (6/20) == Progress == o Linaro GCC/Validation (920) * Completed backports for 2017.04 snapshot * Completed FSF branch merges (GCC 6 and 5 banches) * Validation/Infra patch reviews * Babysat upstream monitoring job * Release automation: continue rework of tcwg-release.sh o Misc (5/20) * Various meetings and discussions. == Plan == o Monthly snapshot and release automation

8 years, 5 months

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[ACTIVITY] 3 - 7 April 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (6/10) - All ICE's resolved with firefox -;) - Few improvements still left - handling indirect calls, handle cases when return value from malloc'd function has more than single use. * Validation (1/10) - patch for adding --set buildconfig option to abe * Public Holiday (2/10) * Misc (1/10) - Meetings == Next Week == - Get back to TCWG-1010 (bitwise-dce) - Validation

8 years, 5 months

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[ACTIVITY] 3 - 7 April 2017

by Diana Picus

== Progress == * [GlobalISel] AArch64 test-suite and self-host [TCWG-1074][3/10] - Ran more tests and reported the results upstream * [ARM GlobalISel] Add support for soft float targets [TCWG-1039][3/10] - Started supporting G_FREM and G_FPOW, which are already handled by the target-independent code - Committed G_FREM upstream, G_FPOW is ready to commit first thing next week * Migrate scripts to Python 3 [TCWG-896] [1/10] - Moved llvm-helper-scripts * Misc [3/10] - Mailing lists, code reviews, meetings == Plan == * [ARM GlobalISel] Add support for soft float targets [TCWG-1039][3/10]

8 years, 5 months

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[ACTIVITY] 3-7 April, 2017

by Christophe Lyon

== Progress == * Validation - used kernelci/lava-ci scripts to boot more kernels - work on benchmarking scripts - added a job to bootstrap gcc with ubsan - reviews * GCC - keeping an eye on trunk regressions * misc (conf-calls, meetings, emails, ....) == Next == * Validation: - hopefully nothing :) * Benchmarking:more scripting

8 years, 5 months

1
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[ACTIVITY] 27 - 31 March 2017

by Omair Javaid

=== This Week === GDB Kernel Awarenes - Kernel Dump setup for ARM [9/10] -- Background study on kdump and try to find working steps for QEMU ARM. -- There is a problem with kdump-tools install script with QEMU -- Tried building kernel for Raspberry Pi2 and Pi3 with kdump, no success so far. -- Setup B2260 with debian and try kdump setup -- Setup and kernel config successful but kdump couldn't configure -- Tried the same with HiKey board Miscellaneous Activities [1/10] -- Meetings, Emails etc. === Next Week === GDB Kernel Awarenes -- Start merging Peter's and IBM patches -- Look around for help on Kdump setup.

8 years, 5 months

1
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[ACTIVITY] 27-31 March 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (6/10) - Fixed firefox ICE - Unfortunately that gives rise to another ICE with ipa-icf pass :( Investigating if this caused by the patch or a latent bug in ipa-icf. - Builds well with chromium * Validation (1/10) - abe/extraconfig patches - backport review * Public Holiday (2/10) * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks

8 years, 5 months

1
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[ACTIVITY] 27-31 March 2017

by Yao Qi

~ Progress ~ * TCWG-1050, GDB 8.0 release. [7/10] ** Fix PR 19942, but looks my patch is completely wrong as I fully misunderstood the "reference count" in GDB. Writing the v2. ** Intel btrace python interface discussion, a marathon discussion about both the interface and implementation. Good thing is that we agree that we need to change the interface. This takes most of my time this week. * TCWG-1040, Review SVE patches. [2/10] Some discussions on avoid copying register contents to a local buffer again, which is from my review comments to Alan's patch and my suggested patch. Spend some time on understanding the zero initialization of union in C++. I'll update my suggested patch. * Update AArch32 GDB buildbot option, so we can get more reasonable test result. [1/10] ~ Plan ~ * More remote tests for GDB 8.0 release. * Fix PR 19942. * One day off on Thu. -- Yao Qi

8 years, 5 months

1
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[ACTIVITY] 27-31 March 2017

by Peter Smith

[Eurollvm] Attended, we have recorded our thoughts in EuroLLVM 2017 Recap doc [TCWG-614] Range extension thunks - I've finished my downstream implementation, and have written almost all the lld tests I'd like to write - Still need to test on real large programs such as libclang.so - Made a start at breaking down the implementation into smaller patches that can be sensibly upstreamed Plans for next week [TCWG-614] - Aiming to start upstreaming on Monday, I'm expecting this to be quite a drawn out process - Continue testing on ARM Linux Planned Absences ACCU conference 2017 27-29 April

8 years, 5 months

1
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[ACTIVITY] 27-31 March 2017

by Christophe Lyon

== Progress == * Validation - helped with new llvm build scripts and jobs - improvements to container scripts to cope with llvm's higher needs in resources - improved tcwg-regression tests - various to remove dependencies on env variables - comparison script now reports the associated .exp file name, making it easier to reproduce a regression - experimented with lava - started work on benchmarking scripts * GCC - keeping an eye on trunk regressions - update to qemu-2.8.0 introduced regressions in validation for armeb on some atomic tests * misc (conf-calls, meetings, emails, ....) == Next == * Validation: - hopefully nothing :) * Benchmarking:scripting

8 years, 5 months

1
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[ACTIVITY] 27 - 31 March 2017

by Diana Picus

== Progress == * EuroLLVM trip [6/10] * [GlobalISel] AArch64 test-suite and self-host [TCWG-1074][2/10] - Apple wants to switch the default O0 to GlobalISel for AArch64, so we need to run tests and gather metrics - I'm running the test-suite and selfhost with GlobalISel to see how it performs * Misc [2/10] - Mailing list, code reviews, meetings, herding GlobalISel cats (we're trying to open more communication channels with Apple so we can unblock progress) == Plan == * Wrap up TCWG-1074 * Learn more TableGen and do more code review

8 years, 5 months

1
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Possible bug with int64_t in GCC 4.9.4

by Fernando Endo

Hello all, I've been using GCC 4.9.4 for a while now (arm-linux-gnueabi-gcc (Linaro GCC 4.9-2017.01) 4.9.4), and I found this strange behavior: In the library header (libm5op.h): ----- #ifdef __cplusplus extern "C" { #endif #include <stdint.h> void warm_and_run_(int64_t intervals_warm, int64_t intervals_run); #ifdef __cplusplus } #endif ----- In the library C file (m5op_arm_.c): ----- #include "stdio.h" #include <stdlib.h> #include "libm5op.h" void warm_and_run_(int64_t intervals_warm, int64_t intervals_run) { // Code here using args } ----- The code above is in /home/fernando/work/benchs/SPEC_CPU2006v1.1-aarch64/m5op/ and compiled as a library with GCC 6.3.1 and is ok: ~/work/toolchains/gcc-linaro-6.3.1-2017.02-x86_64_arm-linux-gnueabi/bin/arm-linux-gnueabi-gcc -march=armv7-a -mfpu=neon-vfpv4 -mfloat-abi=softfp -O3 -fno-optimize-sibling-calls -c m5op_arm_.c -o m5op_arm_.o ~/work/toolchains/gcc-linaro-6.3.1-2017.02-x86_64_arm-linux-gnueabi/bin/arm-linux-gnueabi-gcc -c m5op_arm.S -o m5op_arm.o ~/work/toolchains/gcc-linaro-6.3.1-2017.02-x86_64_arm-linux-gnueabi/bin/arm-linux-gnueabi-ar rcs libm5op32.a m5op_arm_.o m5op_arm.o The library is used in a source code compiled with the GCC 4.9.4 describe at the begining. In the C file: ----- #include <libm5op.h> S_regmatch(pTHX_ regnode *prog) { warm_and_run_(161, 818); // Code continues } ------ This source is compile with: ~/work/toolchains/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabi/bin/arm-linux-gnueabi-gcc -c -o regexec.o -DSPEC_CPU -DNDEBUG -DPERL_CORE -static -marm -march=armv7-a - mtune=generic-armv7-a -mfpu=neon-vfpv4 -mfloat-abi=softfp -O3 -fno-strict-aliasing -std=gnu89 -I/home/fernando/work/benchs/SPEC_CPU2006v1.1-aarch64/m5op/ -L/home/fernando/work/benchs/ SPEC_CPU2006v1.1-aarch64/m5op/ -DGEM5_ARM32=1 -DSPEC_CPU_ILP32 -DSPEC_CPU_LINUX_IA32 regexec.c ~/work/toolchains/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabi/bin/arm-linux-gnueabi-gcc -static -marm -march=armv7-a -mtune=generic-armv7-a -mfpu=neon-vfpv4 -mfloat- abi=softfp -O3 -fno-strict-aliasing -std=gnu89 -I/home/fernando/work/benchs/SPEC_CPU2006v1.1-aarch64/m5op/ -L/home/fernando/work/benchs/SPEC_CPU2006v1.1-aarch64/m5op/ -DGEM5_ARM32=1 -DSPEC_CPU_ILP32 -DSPEC_CPU_LINUX_IA32 av.o deb.o doio.o doop.o dump.o globals.o gv.o hv.o locale.o mg.o numeric.o op.o pad.o perl.o perlapi.o perlio.o perlmain.o perly.o pp.o pp_ctl.o pp_hot.o pp_pack.o pp_sort.o pp_sys.o regcomp.o regexec.o run.o scope.o sv.o taint.o toke.o universal.o utf8.o util.o xsutils.o Base64.o Cwd.o Dumper.o HiRes.o IO.o Peek.o attrs.o poll.o stdio.o DynaLoader.o MD5.o Storable.o Parser.o specrand.o Hostname.o Opcode.o -lm -lm5op32 -lm5op32 -o perlbench Finally, the assembled code of S_regmatch has: ----- af2d0: e3a000a1 mov r0, #161 ; 0xa1 af2d4: e3001332 movw r1, #818 ; 0x332 af2d8: e58d3018 str r3, [sp, #24] af2dc: e58d2028 str r2, [sp, #40] ; 0x28 af2e0: fa02615c blx 147858 <warm_and_run_> ----- So, this means that warm_and_run_ is assumed by GCC 4.9.4 to have 32 bits arguments, while they are indeed 64 bits. This seems to be a bug for me. The code in the library is correctly allocating 2*32 bits regs for each argument. For now, I'm using int32_t, and I just thought it could be useful to feedback you guys. -- Fernando A. Endo, Post-doc INRIA Rennes-Bretagne Atlantique France

8 years, 5 months

2
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[ACTIVITY] 20-24 March 2017

by Christophe Lyon

== Progress == * Validation - finally merged most of work of the past weeks - main jobs are now using start-container scripts - helped with new llvm build scripts and jobs - abe initial config for gcc7: need to investigate a binutils build problem in a trusty container - improved tcwg-regression tests, identified a regression for bug-2123 - many validation-related patches to review * GCC - reported a regresion upstream * misc (conf-calls, meetings, emails, ....) - started discussing benchmarking == Next == * Validation: - a few patches pending review (to improve reports, debug-ability of containers, ...) - work on a new proposal to upgrade our qemu - probably more cleanup needed in the jobs (slaves, basedir scm option, ...) - improve tcwg-regression - boot kernel after build * Benchmarking: start to contribute

8 years, 5 months

1
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[ACTIVITY] Week 12

by Yvan Roux

== Progress == o Linaro GCC/Validation (6/10) * Validation/Infra patch reviews * Upstream monitoring job * Release automation: - Reworking tcwg-release.sh o Misc (4/10) * Various meetings and discussions. == Plan == o Focusing on release automation and validation

8 years, 5 months

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[ACTIVITY] 20 - 24th March 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (6/10) - Trying to fix ICE with firefox * Validation (2/10) - Tweaking .gn files for building chromium - patches to abe - backport reviews * Misc (2/10) - Meetings - bitwise-dce == Next Week == - Continue ongoing tasks

8 years, 5 months

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[ACTIVITY] 20th - 24th March

by Peter Smith

Achievements: [TCWG-614] Range extension Thunks - About 3 hours in total of rebasing due to upstream refactoring - Have finished the non-linkerscript tests and fixed all the bugs detected by them - Started the linkerscript tests, no problems found so far [TLS] - Some explanation to upstream of how ARM TLS works - Discovered that upstream have broken TLS global-dynamic for executables, I have a fix but will need to write a test case. Plans for next week: - Euro LLVM Monday, Tuesday - Continue with TCWG-614 -- Try and link clang (> 30 Mb) to test range thunks on some real programs -- Aim to get something ready for upstream review by end of week, may slip to beginning of next week depending on if I find any hard to debug problems.

8 years, 5 months

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[ACTIVITY] 20th - 24th March

by Yao Qi

~ Progress ~ * TCWG-1050, GDB 8.0 release. [6/10] ** Pushed a fix to AArch64 process record bug on PRFM instruction. AArch64 native test looks good now. ** Start to look at ARM native test, triage the fails in watch-bitfields.exp. Test doesn't fail on old Linux kernel, likely a kernel bug. Further analysis is needed. ** Request reverting Intel btrace python interface before release, as they are too btrace-specific. ** Fixing a bug about thread_info refcount issue. Testing the patch. * Discussion on RTOS awareness in debugging. OpenOCD people want GDB aware more about different RTOSes. [1/10] * TCWG-1040, SVE patches review, [2/10] * Misc, [1/10] ~ Plan ~ * Take a look at native ARM testing, and cross testing. * Post my fix to thread_info refcount issue. -- Yao Qi

8 years, 5 months

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[ACTIVITY] Week 11

by Yvan Roux

== Progress == o Linaro GCC/Validation (8/10) * Backports reviews * FSF GCC 6 branch merge * Delivered Linaro GCC 6.3 2017.03 sources snapshot * BUD17 kernel size reduction discussion: - delivered a proof-of-concept toolchain to the kernel guys * Validation/Infra patch reviews o Misc (2/10) * Various meetings and discussions. == Plan == o back on tree-reassociation

8 years, 6 months

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[ACTIVITY] 13 - 17 March 2017

by Diana Picus

== Progress == * [ARM GlobalISel] Use TableGen for inst selector [TCWG-1037] [3/10] - Got some patches ready but they depend on the TableGen support for predicates, which has not been committed upstream yet * [GlobalISel] Use proper calling conv for calls [TCWG-1051] [1/10] - Patch accepted upstream, will commit next week * Migrate scripts to Python 3 [TCWG-896] [1/10] - Started migrating tcwg-release-tools to Python 3, still in progress * Misc [5/10] - Mailing lists, code reviews, buildbot monitoring, catching up after Connect - LLVM social in Stockholm - Fiddling with the new container for our LLVM buildmasters == Plan == * Commit TCWG-1051, maybe TCWG-1037 too depending on upstream progress * More GlobalISel code reviews * TCWG-896 * Out of office for EuroLLVM (24 - 29 March)

8 years, 6 months

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[ACTIVITY] 13th Mar -- 17th Mar

by Peter Smith

[TCWG-614] Range extension Thunks Worked all week on this. I've got a prototype that is nearly feature complete. It passes the existing tests when run in a single pass. I'm now trying to get it to run in multiple passes. Plans [TCWG-614] Range extension Thunks Start adding tests for the new functionality and doubtless spending a lot of time fixing problems. If I'm lucky I may have something that I can at least in part send upstream for review by the end of the week.

8 years, 6 months

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[ACTIVITY] 13th Mar -- 17th Mar

by Yao Qi

~ Progress ~ * Three days off [6/10] * TCWG-1050, GDB 8.0 release. [2/10] Pushed in some patches fixing ARM reverse debugging bug. Investigating a GDB internal error. Review Python btrace stuff, still trying to make it more generic. * Misc, [2/10], catch up emails ~ Plan ~ * TCWG-1050. * Review IBM linux kernel awareness patches. -- Yao Qi

8 years, 6 months

1
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[ANNOUNCE] Linaro GCC 6 2017.03 snapshots

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2017.03 snapshot of the Linaro GCC 6 source package. This monthly snapshot[1] is based on FSF GCC 6.3+svn246148 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the 2017.05 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.03/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 6.3+svn246148 * Backport of [Bugfix] [AArch64] PR target/71112 ICE with -fpie on aarch64 ILP32 big-endian * Backport of [Bugfix] [AArch64] PR target/71727 -O3 -mstrict-align produces code which assumes unaligned vector accesses work * Backport of [Bugfix] [AArch64] PR target/78382 ICE when compiling on aarch64 in ILP32 mode with traditional thread local storage and pic * Backport of [AArch32] Add vfpv2 and neon-vfpv3 * Backport of [AArch32] Fix assembly comment syntax in -mprint-tune-info * Backport of [AArch64] Add commandline support for -march=armv8.3-a * Backport of [AArch64] Expand DImode constant stores to two SImode stores when profitable * Backport of [AArch64] Fix aarch64 PGO bootstrap * Backport of [AArch64] Fix exception handling for ILP32 aarch64 * Backport of [AArch64] Have the verbose cost model output output be controllable * Backport of [AArch64] Implement popcount pattern * Backport of [AArch64] Optimized implementation of search_line_fast for the CPP lexer * Backport of [AArch64] Use new target pass registration framework for FMA steering pass * Backport of [Testsuite] [AArch32] Add Cortex-A15 tuning to gcc.dg/uninit-pred-8_a.c * Backport of [Testsuite] [AArch32] Skip optional_mthumb tests if GCC has a default mode * Backport of [Testsuite] [AArch32] Updating testcase unsigned-extend-2.c * Backport of [Testsuite] [AArch64] Fix gcc.dg/torture/float32-builtin.c with RTL checking * Backport of [Testsuite] [AArch64] PR middle-end/78142 more registers to be used for on gcc.target/aarch64/vector_initialization_nostack.c * Backport of [Cleanup] [AArch32] Define arm_arch_core_flags in a single file * Backport of [Cleanup] [AArch32] Remove unimplemented option -macps-float 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]. Source package snapshots are defined when the compiler is only put through unit-testing and full validation is not performed. [2]. Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed.

8 years, 6 months

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[ACTIVITY] 27 February - 3 March 2017

by Diana Picus

== Progress == * 2 days out of office (Thursday & Friday) * [ARM GlobalISel] Add support for lowering calls [TCWG-1038] - Committed support for GEPs and 32-bit constants, which enables us to put call parameters on the stack - Proposed a fix for an AArch64 issue where the size of the stack was computed incorrectly if the last parameter was sign- or zero-extended into a stack slot * Misc - Mailing list etc. == Plan == * Connect

8 years, 6 months

1
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[ACTIVITY] March 2nd - March 3rd 2017

by Peter Smith

2 day week: == Activity == [TCWG-617] Range extension thunks - rebased patch after coming back from holiday, took some time as quite a bit had changed, patch still in upstream review. - Have downstream patches to make inline thunks work with linker scripts, will post for review next week. == Plan == At linaro connect all next week == Planned absences == Euro LLVM 27-28 March

8 years, 6 months

1
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[ACTIVITY] Feb 28th -- March 03

by Yao Qi

~ Progress ~ * GDB 8.0 release, TCWG-1050, [5/10]. Release branch will be created on March 15th. Fixed some instruction decoding in reverse debugging. Tested. Added a unit test for arm process recording for some instructions. To be posted upstream. PR gdb/21165 is fixed. * SVE GDB patches review, TCWG-1035, [3/10] SVE patches review. One of Alan's patch is to remove some lines of code written 19 years ago, which was to fix a bug at that moment. A lot of archeology. Hopefully the author is still in RedHat, and get more information on the fix. Alan's patch is correct. * Upstream patches review. [2/10] ** Some python bindings on intel btrace. Make it more portable, hopefully these python apis can be used for CoreSight in the future. ~ Plan ~ * Linaro Connect. * March 13th -- 15th, holiday. -- Yao Qi

8 years, 6 months

1
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[ACTIVITY] 20 - 24 Feb 2017

by Omair Javaid

=== This Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] [3/10] -- Fixed issues identified during review. -- Investigation of thumb32 vs thumb16 mode selection for arm hw breakpoints. -- Committed upstream. LLDB BUD17 Presentation [6/10] -- Created demos -- Wrote slides Miscellaneous Activities [1/10] -- Meetings, Emails etc. === Next Week === Wind up LLDB backlog -- Report issues against all identified problems. -- JIRA updates -- Migrate LLDB buildbot scripts to Linaro GIT -- Update LLDB buildbot HOW-To. GDB Kernel Awareness -- Start looking at IBM patches Travel preparations for Linaro Connect BUD17

8 years, 6 months

1
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[ACTIVITY] 20 - 24 February 2017

by Diana Picus

== Progress == * [ARM GlobalISel] Fix atomic loads/stores after r294993 [TCWG-1041] [1/10] - For the moment we just bail out if we have any atomic loads / stores. This is better than silently replacing them with non-atomic operations. * [ARM GlobalISel] Add support for lowering calls [TCWG-1038] [6/10] - Committed support for calls with args/returns in registers (ints, pointers, floating point) - Found and reported a bug in the AArch64 backend - Working on lowering stack arguments: committed support for stores, still working on adding support for GEPs and constants so we can actually compute the addresses that we have to store to * Misc [3/10] - Meetings, mailing lists, code reviews - Connect slides - Buildbots (reverted patches with flaky tests, fixed mips-specific test to run only when mips is built) == Plan == * Out of office on Thursday and Friday * [ARM GlobalISel] Add support for lowering calls [TCWG-1038]

8 years, 6 months

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[ACTIVITY] 20-24 February 2017

by Christophe Lyon

== Progress == * Validation - more work on use of containers, ssh-agent & jenkins problems - added an experimental job to prepare the migration to the new scripts * misc (conf-calls, meetings, emails, ....) == Next == * Holidays next week * Connect

8 years, 6 months

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v8.2-A CPU support

by David Xia

Hi Guys, Could you please let me know which release of toolchain support v8.2-A CPU? How to get it? https://www.linaro.org/downloads/ Thanks David 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.

8 years, 6 months

3
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Re: Problem with building AML file from Dsdt.asl for Juno

by Leif Lindholm

Oh dear... Adding linaro-toolchain(a)lists.linaro.org to see what they have to say (and linaro-uefi, because it's useful information for subscribers of that). Regards, Leif On Tue, Feb 21, 2017 at 08:09:53PM +0000, Evan Lloyd wrote: > To add to Alexei's comments: > It seems there is a bug in the newer GCC Pre-processor that messes with the file case. > (He is currently checking what file system flags might be affecting that, but older versions work fine). > > The questions I'd add are: > Is there someone in Linaro who we might discuss the problem with (on the GCC side)? I think there are Linaro guys involved with it, and they may be able to tell us it is confusion on our part. > Should we be trying to upstream the fix, or just wait for a new GCC? > > Regards, > Evan > > > > From: Alexei Fedorov > Sent: 21 February 2017 16:37 > To: ard.biesheuvel(a)linaro.org; ryan.harkin(a)linaro.org; leif.lindholm(a)linaro.org; Evan Lloyd; Sami Mujawar; Girish Pathak > Cc: Mitch Ishihara; Alexei Fedorov > Subject: Problem with building AML file from Dsdt.asl for Juno > > > Hello, > > > > We are facing a problem when compiling Juno's Dsdt.asl file with the following GCC builds: > > > > gcc-linaro-5.3.1-2016.05-i686-mingw32_aarch64-elf > > gcc-linaro-6.1.1-2016.08-i686-mingw32_aarch64-elf > > gcc-linaro-6.2.1-2016.11-i686-mingw32_aarch64-elf > > gcc-linaro-6.3.1-2017.02-i686-mingw32_aarch64-elf > > > > which all show a similar error: > > > > ... > Trim --source-code -l -o k:\Build\ArmJuno\DEBUG_GCC5\AARCH64\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\OUTPUT\.\Dsdt.iiii k:\Build\ArmJuno\DEBUG_GCC5\AARCH64\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\OUTPUT\.\Dsdt.iii > "C:\ASL\iasl" -pk:\Build\ArmJuno\DEBUG_GCC5\AARCH64\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\OUTPUT\.\Dsdt.aml k:\Build\ArmJuno\DEBUG_GCC5\AARCH64\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\OUTPUT\.\Dsdt.iiii > Error 6126 - Input file does not appear to be an ASL or data table source file > Intel ACPI Component Architecture > make: *** [Makefile:325: k:\Build\ArmJuno\DEBUG_GCC5\AARCH64\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\OUTPUT\Dsdt.aml] Error -1 > > > > It looks like the problem is with GCC pre-processor running on Dsdt.i file (created after > > Trim --asl-file -o k:\Build\ArmJuno\DEBUG_GCC5\AARCH64\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\OUTPUT\.\Dsdt.i -i k:\Build\ArmJuno\DEBUG_GCC5\AARCH64\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\OUTPUT\inc.lst k:\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\Dsdt.asl > > ) > > > > See: > > > "C:\gcc-linaro-6.3.1-2017.02-i686-mingw32_aarch64-elf\bin\aarch64-elf-gcc" -x c -E -include AutoGen.h -Ik:\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables -Ik:\Build\ArmJuno\DEBUG_GCC5\AARCH64\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\DEBUG -Ik:\ArmPkg -Ik:\ArmPkg\Include -Ik:\ArmPlatformPkg -Ik:\ArmPlatformPkg\Include -Ik:\ArmPlatformPkg\ArmVExpressPkg -Ik:\ArmPlatformPkg\ArmVExpressPkg\Include -Ik:\ArmPlatformPkg\ArmJunoPkg -Ik:\ArmPlatformPkg\ArmJunoPkg\Include -Ik:\EmbeddedPkg -Ik:\EmbeddedPkg\Include -Ik:\MdePkg -Ik:\MdePkg\Include -Ik:\MdePkg\Include\AArch64 -Ik:\MdeModulePkg -Ik:\MdeModulePkg\Include -Ik:\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTablesk:\Build\ArmJuno\DEBUG_GCC5AARCH64OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\OUTPUT\.\Dsdt.i > k:\Build\ArmJuno\DEBUG_GCC5\AARCH64\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\OUTPUT\.\Dsdt.iii > > > > For all GCC versions above, the 1st line of Dsdt.iii lists its name & full path in lowercase: > > # 1 "k:\\build\\armjuno\\debug_gcc5\\aarch64\\openplatformpkg\\platforms\\arm\\juno\\acpitables\\acpitables\\output\\dsdt.i" > > > > Compare it with Dsdt.iii after pre-processing by GCC from gcc-linaro-4.9.4-2017.01-i686-mingw32_aarch64-elf release: > > # 1 "k:\\Build\\ArmJuno\\DEBUG_GCC49\\AARCH64\\OpenPlatformPkg\\Platforms\\ARM\\Juno\\AcpiTables\\AcpiTables\\OUTPUT\\.\\Dsdt.i" > > > > For GCC 5.3.1 & above Dsdt.iiii created by > > Trim --source-code -l -o k:\Build\ArmJuno\DEBUG_GCC5\AARCH64\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\OUTPUT\.\Dsdt.iiii k:\Build\ArmJuno\DEBUG_GCC5\AARCH64\OpenPlatformPkg\Platforms\ARM\Juno\AcpiTables\AcpiTables\OUTPUT\.\Dsdt.iii > > > > has 0 length, which causes iASL compiler to fail with: > > Error 6126 - Input file does not appear to be an ASL or data table source file > > > > We've got a workaround solution for that problem which involves modification of \BaseTools\Conf\build_rule.template: > > > > In ASL section: > [Acpi-Source-Language-File] > <InputFile> > ?.asl, ?.Asl, ?.ASL > > > > by replacing 3 lines as below: > > > <Command.GCC, Command.GCCLD> > # Trim --asl-file -o $(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.i -i $(INC_LIST) ${src} > # "$(ASLPP)" $(ASLPP_FLAGS) $(INC) -I${s_path} $(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.i > $(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.iii > # Trim --source-code -l -o $(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.iiii $(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.iii > "$(ASLPP)" $(ASLPP_FLAGS) $(INC) -I${s_path} ${src} > $(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.i > Trim --source-code -l -o $(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.iiii $(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.I > > > > Please share your opinion on that matter. > > > > Alexei. > > > > > > > > > > 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.

8 years, 6 months

1
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[ACTIVITY] 13 - 17 Feb 2017

by Omair Javaid

=== This Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] [6/10] -- Test on Arm hardware and fix issues. -- Wrote breakpoint command based test-cases for multi-thread tests. -- Wrote RSP packets based test-cases. -- Code clean-up, formatting and re basing to latest code. -- Submit final patch for review after adding tests and arm support. Initial investigation on LLDB watchpoints set on variables [TCWG-1049] [1/10] GDB Kernel Awareness [1/10] -- Looked at STM landing team patches and tried setting up test environment. LLDB BUD17 Presentation [1/10] -- Spent some time deciding on content and information gathering. Miscellaneous Activities [1/10] -- Meetings, Emails etc. === Next Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] -- Work on review and up streaming. LLDB BUD17 Presentation -- Complete slide deck and submit for review. GDB Kernel Awareness -- Test submitted patches and develop understanding of project. Further investigation on LLDB watchpoints set on variables [TCWG-1049]

8 years, 6 months

1
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[ACTIVITY] 20 Feb 2017

by Peter Smith

1 day in office this week == Activity == [TCWG-617] Range extension thunks - Reworked patch to finalize dynamic content early and resubmitted for upstream review - Investigated what I'll need to do to handle linkerscripts [BUD17] Uploaded slide deck == Plan == On holiday till Thursday 1st March Deal with any last minute Linaro Connect stuff Continue with Range Extension Thunk work. == Planned absences == Holiday 21st Feb to 1st March Linaro Connect 6th to 10th March Euro LLVM 27-28 March

8 years, 6 months

1
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[ACTIVITY] 13 - 17 Feb 2017

by Yao Qi

~ Progress ~ * AArch64 OpenOCD. TCWG-947 [4/10] AArch64 support is merged to mainline. Works with one Hikey I borrowed from Peter G. Still doesn't work with mine. * Upstream patch reviews. [2/10] ** Review Peter B.'s disassembly option patch. ** DWARF implicit_pointer big-endian patch. ** Python event before_prompt patch. * Off on Thur and Fri. [4/10] ~ Plan ~ * Go to London again on Tue for Schengen visa. * Back to GDB work, think about SVE GDB patches, 8.0 release, etc. -- Yao Qi

8 years, 6 months

1
0
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[ACTIVITY] 13 - 17 Feb 2017

by Prathamesh Kulkarni

== This Week == * gimplefe (5/10) - Committed patch to add abs_expr - Committed patch to fix PR79478 - Committed patch to add fma_expr - Committed patch to fix ICE's in c_parser_gimple_postfix_expression - Submitted patch to fix incorrect translation for an invalid test-case, but decided to drop the patch after discussing with Richard. * TCWG-1005 (2/10) - Formatting fixes - Patch compiles SPEC2K (not benchmarked) * PR79588 (1/10) - Fix discussion with Jakub * Misc (2/10) - Meetings - Connect slides == Next Week == - TCWG-1010, TCWG-1005, gimple-fe

8 years, 7 months

1
0
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[ACTIVITY] 13-17 February 2017

by Christophe Lyon

== Progress == * Validation - more work on use of containers, ssh-agent & jenkins problem - good progress - committed several improvements to the production jobs too * misc (conf-calls, meetings, emails, ....) == Next == * ABE & Jenkins jobs patches reviews and bug fixes * Holidays Feb 27th-March 3rd (week before Connect)

8 years, 7 months

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[ANNOUNCE] Linaro Binary Toolchain Release GCC 6.3-2017.02

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 6.3-2017.02 Release is now available. The GCC 6 Release series has significant changes from the GCC 5 release series. For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-6/changes.html For help in porting to GCC 6 please see the following explanation: https://gcc.gnu.org/gcc-6/porting_to.html Download release packages from: (sources) http://releases.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02/ (binaries) http://releases.linaro.org/components/toolchain/binaries/6.3-2017.02/ 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/ Supported Targets ================== The Linaro binary toolchain is a collection of x86-hosted GNU cross-toolchains targeting a variety of ARM architecture targets. Linaro TCWG provides these toolchains as a service to our members. Due to hardware availability, system-image availability, validation complexity, and user-base size, not all host and target toolchain combinations can be validated by Linaro with the same rigor. The most rigorously validated targets are little-endian and hardfloat implementations of the 32-bit ARMv7 (arm), 32-bit ARMv8 (armv8), and 64-bit ARMv8 (aarch64) architectures. Linaro recommends those targets to our members. A full list of the supported arm and AArch64 target triples can be found here: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 Linaro recommends using the 64-bit x86_64 host toolchains as the 32-bit i686 host toolchains and the 32-bit mingw host toolchains will only be provided as long as there is sufficient member interest to justify their continued availability. Package Versions ================= Linaro GCC 6.3-2017.02 http://releases.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02/ Linaro glibc 2.23 (linaro/2.23/master) https://lists.gnu.org/archive/html/info-gnu/2016-02/msg00009.html Linaro newlib 2.4-2016.03 (linaro_2.4-branch) https://sourceware.org/ml/newlib/2016/msg00370.html Linaro binutils 2.27 (linaro_binutils-2_27-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… Linaro GDB 7.12 (gdb-7.12-branch) https://lists.gnu.org/archive/html/info-gnu/2016-10/msg00007.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 6 (as of Linaro GCC 6.3-2017.02) ============================================== * Previous versions of the Linaro GCC 6 toolchain were incorrectly generating floating-point code for soft-float Linux targets (arm-linux-gnueabi, and armeb-linux-gnueabi). This escaped detection until recently because the soft-float targeted toolchains were configured to use general-purpose registers for passing floating-point values (which is what you would expect for soft-float toolchains) and the intra-routine floating-code was not noticed. The issue would only show up on targets that were run on hardware that truly didn't have floating-point hardware where the kernel did not trap and emulate floating-point routines. This has been solved in Linaro GCC 6.3-2017.02-rc2 by configuring the toolchain (using --with-float=soft) to generate code without any floating-point instructions at all (-mfloat-abi=soft). https://review.linaro.org/#/c/16968/2 This change should not break compatibility between existing binaries compiled with these toolchains since the float-point parameter passing ABI is still the same. * A bug/regression in the compiler has been identified whereby the target function that is invoked when calling a "weak" function directly is the "strong" override, whereas when calling the function via a pointer the "weak" implementation is used. This would be noticed as inconsistent function invocation when invoking directly vs. invoking via function pointer. This issue only affected 32-bit arm targets. This regression has been fixed upstream and backported into Linaro GCC 6.3-2017.02-rc2. GCC PR target/78253: [5/6/7 Regression] [ARM] call weak function instead of strong when called through pointer. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78253 Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * MS Windows does not support symlinks and the MS Windows archive extractor does not properly deep copy the symlink target files/directories into the symlinked directory structure when unpacking the toolchain archive. This causes problems with missing dependencies when using the Linaro mingw toolchains, as identified in the following bugs: https://bugs.linaro.org/show_bug.cgi?id=2684 https://bugs.linaro.org/show_bug.cgi?id=2192 https://bugs.linaro.org/show_bug.cgi?id=2762 This has been solved by copying files rather than using symlinks when the mingw targeted toolchain archives are created. https://review.linaro.org/#/c/16415/ * Users of Linaro's toolchain have encountered problems when building projects with Autotools (specifically libtool): https://bugs.linaro.org/show_bug.cgi?id=2764 The Linaro binary toolchain release contained files with a .la suffix as artifacts of the toolchain build process. These .la files are helper files for libtool, but unlike a gcc install tree, they are not position independent and contain full paths. Since these artifacts contain absolute paths they can actually mislead user invocation of libtool into not finding required libraries (because they reference the build tree, not the install location) and hence breaking Autotools builds. These *.la file artifacts have been removed from Linaro toolchain binaries because they are unnecessary for users. * The Linaro GCC 6.3-2017.01 snapshot added further enablement for ARMv8-M and these have been incorporated into this release. * Compiling and statically linking some SPEC2006int tests against tcmalloc have been failing due to a problem with glibc's memory allocator function overrides. This was fixed upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=20432 Backported into Linaro glibc 2.23: commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer <fweimer(a)redhat.com> Date: Fri Aug 26 22:40:27 2016 +0200 malloc: Simplify static malloc interposition [BZ #20432] * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 1.5G to 600M for aarch64-linux-gnu target with the gcc-6-branch. * The GDB version was upgraded from GDB 7.11 in the Linaro GCC 6.1-2016.08 release to GDB 7.12 in the Linaro GCC 6.2-2016.11 release. * The Linaro GCC 6.2-2016.10 snapshot added AArch32 support for ARMv8.2 and ARMv8m, as well as some AArch64 fixes for ARMv8.2, and bug fixes merged from FSF GCC 6.2. This is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * Basic tuning support for the Qualcomm qdf24xx was added to the Linaro GCC 6.2-2016.10 snapshot and is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * IFUNC was disabled for baremetal targets, as it was causing test-suite failures, and is presently a Linux only feature. * The gold linker was added to this binary release. * Backported malloc_lock fix into Linaro newlib 2.4. commit 2665915cfc46aa6403bb2efd473c523d3167e0cb Author: Andre Vieira (lists) <Andre.SimoesDiasVieira(a)arm.com> Date: Thu Jun 16 12:23:51 2016 +0100 Re-enable malloc_lock for newlib-nano * Backported rawmemchr patch into Linaro newlib 2.4. commit e7b1ee2ea6aa3ee1da41976407410e6202a098c5 Author: Wilco Dijkstra <Wilco.Dijkstra(a)arm.com> Date: Thu May 12 16:16:58 2016 +0000 Add rawmemchr * Backported strlen fix when using Thumb-2 and -Os -marm into Linaro newlib 2.4. commit 5c02bcc086a96b174e1b9e1445a4a1770070107a Author: Thomas Preud'homme <thomas.preudhomme(a)arm.com> Date: Wed May 11 17:18:48 2016 -0400 Fix strlen using Thumb-2 with -Os -marm * Backported fix for semihosting ARM when heapinfo not provided by debugger into Linaro newlib 2.4. commit 5c9403eaf40951f8a4f55ed65f661b485ff44be7 Author: David Hoover <spm2(a)dangerous.li> Date: Thu Apr 21 07:12:24 2016 +0200 Fixed semihosting for ARM when heapinfo not provided by debugger. * Merged latest FSF glibc release/2.23/master into Linaro glibc 2.23. * Backported __ASSUME_REQUEUE_PI check Linaro glibc 2.23 branch. commit 2d20c3bf918cd94ebd4106693adb3a5c9272baba Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) * Backported removal of __ASSUME_SET_ROBUST_LIST from Linaro glibc 2.23 branch. commit bb8f09d72756186a3d82a1f7b2adcf8bc1fbaed1 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST * Backported removal of __ASSUME_FUTEX_LOCK_PI from Linaro glibc 2.23 branch. commit e48b4e7fed0de06dd7832ead48bea8ebc813a204 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Merged latest FSF binutils-2_27-branch into linaro_binutils-2_27-branch. * The libwinpthread DLL is now copied into the host bin directory to satisfy mingw package dependencies. * Backported GNU Linker fix. commit fbc6c6763e70cb2376e2de990c7fc54c0ee44a59 Author: Nick Clifton <nickc(a)redhat.com> Date: Tue Aug 23 09:45:11 2016 +0100 Fix seg-fault in ARM linker when trying to parse a binary file. * Backported GNU Assembler fix for PR 20364 commit 5fe7ebe5ab43750abf8f490b785d99a1e598e7fd Author: Nick Clifton <nickc(a)redhat.com> Date: Fri Aug 5 10:37:57 2016 +0100 Fix the generation of alignment frags in code sections for AArch64. https://sourceware.org/bugzilla/show_bug.cgi?id=20364 * Performance related backports from the following snapshots have been included: Linaro GCC 6.1-2016.06, Linaro GCC 6.1-2016.07, Linaro GCC 6.1-2016.08, Linaro GCC 6.2-2016.09, Linaro GCC 6.2-2016.10, Linaro GCC 6.2-2016.11, Linaro GCC 6.2-2016.12, and Linaro GCC 6.3-2017.01. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.06/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.07/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.08/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.09/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.10/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.01/ 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 | Director - Linaro Core Technology and Tools ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net T: +1-612-424-1861

8 years, 7 months

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[ACTIVITY] 13 - 17 February 2017

by Peter Smith

[TCWG-617] Range extension thunks - Did some refactoring to allow addresses to be assigned to sections prior to Thunk creation -- In upstream review - Investigated lld's implementation of linkerscripts and found out that they will need some refactoring as well -- Need to assign addresses more than once -- Need to insert some thunks at precise points (Mips equivalent of inline veneers), need to make sure that linkerscript won't reorder the sections. [BUD17] Gave test run of presentation, cut down a lot of the slides as a result == Plan == In office on Monday only, then Holiday to 1st March - Finalise slides for connect, and work out how to submit them. - Work out how to do Thunks and linker scripts cleanly == Planned absences == Holiday 21st Feb to 1st March Linaro Connect 6th to 10th March Euro LLVM 27-28 March

8 years, 7 months

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[ACTIVITY] 13 - 17 February 2017

by Diana Picus

== Progress == * [ARM GlobalISel] Add support for fp arguments [TCWG-1029] [7/10] - Committed support for double precision hard float and soft-fp * [ARM GlobalISel] Fix atomic loads/stores after r294993 [TCWG-1041] [1/10] - Worked on a patch that I'll probably commit next week * Misc [2/10] - Meetings, mailing lists, code reviews == Plan == * More code reviews * More GlobalISel

8 years, 7 months

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Re: ABE patching

by Fathi Boudra

Hi Denys, adding linaro-toolchain ml for ABE related questions. On 16 February 2017 at 06:12, Denys Dmytriyenko <denis(a)denix.org> wrote: > Hi, > > I was wondering if there was a way to apply local patches to toolchain > components (gcc, binutils, glibc, etc.) when building with ABE. > > The only way I know of right now is to mirror the upstream repository into own > git tree, patch it and point ABE to it; or check it out locally, patch it and > pass the resulting tarball to ABE build with --disable update flag. > > I know one of ABE's requirement is "Should build all toolchains with no > custom patches", but it would be nice to be able to do so on top of official > sources... Thoughts, comments? > > -- > Denys

8 years, 7 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 6.3-2017.02-rc2

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 6.3-2017.02-rc2 Release-Candidate is now available. The GCC 6 Release series has significant changes from the GCC 5 release series. For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-6/changes.html For help in porting to GCC 6 please see the following explanation: https://gcc.gnu.org/gcc-6/porting_to.html Download release-candidate packages from: (sources) http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02-rc2/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/6.3-2017.02-rc2/ 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/ A description of the arm and Aarch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 6.3-2017.02-rc2 http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02-rc2/ Linaro glibc 2.23 (linaro/2.23/master) https://lists.gnu.org/archive/html/info-gnu/2016-02/msg00009.html Linaro newlib 2.4-2016.03 (linaro_2.4-branch) https://sourceware.org/ml/newlib/2016/msg00370.html Linaro binutils 2.27 (linaro_binutils-2_27-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… Linaro GDB 7.12 (gdb-7.12-branch) https://lists.gnu.org/archive/html/info-gnu/2016-10/msg00007.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 6 (as of Linaro GCC 6.3-2017.02-rc2) ================================================== * Previous versions of the Linaro GCC 6 toolchain were incorrectly generating floating-point code for soft-float Linux targets (arm-linux-gnueabi, and armeb-linux-gnueabi). This escaped detection until recently because the soft-float targeted toolchains were configured to use general-purpose registers for passing floating-point values (which is what you would expect for soft-float toolchains) and the intra-routine floating-code was not noticed. The issue would only show up on targets that were run on hardware that truly didn't have floating-point hardware where the kernel did not trap and emulate floating-point routines. This has been solved in Linaro GCC 6.3-2017.02-rc2 by configuring the toolchain (using --with-float=soft) to generate code without any floating-point instructions at all (-mfloat-abi=soft). https://review.linaro.org/#/c/16968/2 This change should not break compatibility between existing binaries compiled with these toolchains since the float-point parameter passing ABI is still the same. * A bug/regression in the compiler has been identified whereby the target function that is invoked when calling a "weak" function directly is the "strong" override, whereas when calling the function via a pointer the "weak" implementation is used. This would be noticed as inconsistent function invocation when invoking directly vs. invoking via function pointer. This issue only affected 32-bit arm targets. This regression has been fixed upstream and backported into Linaro GCC 6.3-2017.02-rc2. GCC PR target/78253: [5/6/7 Regression] [ARM] call weak function instead of strong when called through pointer. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78253 Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * MS Windows does not support symlinks and the MS Windows archive extractor does not properly deep copy the symlink target files/directories into the symlinked directory structure when unpacking the toolchain archive. This causes problems with missing dependencies when using the Linaro mingw toolchains, as identified in the following bugs: https://bugs.linaro.org/show_bug.cgi?id=2684 https://bugs.linaro.org/show_bug.cgi?id=2192 https://bugs.linaro.org/show_bug.cgi?id=2762 This has been solved by copying files rather than using symlinks when the mingw targetted toolchain archives are created. https://review.linaro.org/#/c/16415/ * Users of Linaro's toolchain have encountered problems when building projects with Autotools (specifically libtool): https://bugs.linaro.org/show_bug.cgi?id=2764 The Linaro binary toolchain release contained files with a .la suffix as artifacts of the toolchain build process. These .la files are helper files for libtool, but unlike a gcc install tree, they are not position independent and contain full paths. Since these artifacts contain absolute paths they can actually mislead user invocation of libtool into not finding required libraries (because they reference the build tree, not the install location) and hence breaking Autotools builds. These *.la file artifacts have been removed from Linaro toolchain binaries because they are unnecessary for users. * The Linaro GCC 6.3-2017.01 snapshot added further enablement for ARMv8-M and these have been incorporated into this release. * Compiling and statically linking some SPEC2006int tests against tcmalloc have been failing due to a problem with glibc's memory allocator function overrides. This was fixed upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=20432 Backported into Linaro glibc 2.23: commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer <fweimer(a)redhat.com> Date: Fri Aug 26 22:40:27 2016 +0200 malloc: Simplify static malloc interposition [BZ #20432] * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 1.5G to 600M for aarch64-linux-gnu target with the gcc-6-branch. * The GDB version was upgraded from GDB 7.11 in the Linaro GCC 6.1-2016.08 release to GDB 7.12 in the Linaro GCC 6.2-2016.11 release. * The Linaro GCC 6.2-2016.10 snapshot added AArch32 support for ARMv8.2 and ARMv8m, as well as some AArch64 fixes for ARMv8.2, and bug fixes merged from FSF GCC 6.2. This is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * Basic tuning support for the Qualcomm qdf24xx was added to the Linaro GCC 6.2-2016.10 snapshot and is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * IFUNC was disabled for baremetal targets, as it was causing test-suite failures, and is presently a Linux only feature. * The gold linker was added to this binary release. * Backported malloc_lock fix into Linaro newlib 2.4. commit 2665915cfc46aa6403bb2efd473c523d3167e0cb Author: Andre Vieira (lists) <Andre.SimoesDiasVieira(a)arm.com> Date: Thu Jun 16 12:23:51 2016 +0100 Re-enable malloc_lock for newlib-nano * Backported rawmemchr patch into Linaro newlib 2.4. commit e7b1ee2ea6aa3ee1da41976407410e6202a098c5 Author: Wilco Dijkstra <Wilco.Dijkstra(a)arm.com> Date: Thu May 12 16:16:58 2016 +0000 Add rawmemchr * Backported strlen fix when using Thumb-2 and -Os -marm into Linaro newlib 2.4. commit 5c02bcc086a96b174e1b9e1445a4a1770070107a Author: Jeff Johnston <jjohnstn(a)redhat.com> Date: Wed May 11 17:18:48 2016 -0400 Fix strlen using Thumb-2 with -Os -marm * Backported fix for semihosting ARM when heapinfo not provided by debugger into Linaro newlib 2.4. commit 5c9403eaf40951f8a4f55ed65f661b485ff44be7 Author: David Hoover <spm2(a)dangerous.li> Date: Thu Apr 21 07:12:24 2016 +0200 Fixed semihosting for ARM when heapinfo not provided by debugger. * Merged latest FSF glibc release/2.23/master into Linaro glibc 2.23. * Backported __ASSUME_REQUEUE_PI check Linaro glibc 2.23 branch. commit 2d20c3bf918cd94ebd4106693adb3a5c9272baba Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) * Backported removal of __ASSUME_SET_ROBUST_LIST from Linaro glibc 2.23 branch. commit bb8f09d72756186a3d82a1f7b2adcf8bc1fbaed1 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST * Backported removal of __ASSUME_FUTEX_LOCK_PI from Linaro glibc 2.23 branch. commit e48b4e7fed0de06dd7832ead48bea8ebc813a204 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Merged latest FSF binutils-2_27-branch into linaro_binutils-2_27-branch. * The libwinpthread DLL is now copied into the host bin directory to satisfy mingw package dependencies. * Backported GNU Linker fix. commit fbc6c6763e70cb2376e2de990c7fc54c0ee44a59 Author: Nick Clifton <nickc(a)redhat.com> Date: Tue Aug 23 09:45:11 2016 +0100 Fix seg-fault in ARM linker when trying to parse a binary file. * Backported GNU Assembler fix for PR 20364 commit 5fe7ebe5ab43750abf8f490b785d99a1e598e7fd Author: Nick Clifton <nickc(a)redhat.com> Date: Fri Aug 5 10:37:57 2016 +0100 Fix the generation of alignment frags in code sections for AArch64. https://sourceware.org/bugzilla/show_bug.cgi?id=20364 * Performance related backports from the following snapshots have been included: Linaro GCC 6.1-2016.06, Linaro GCC 6.1-2016.07, Linaro GCC 6.1-2016.08, Linaro GCC 6.2-2016.09, Linaro GCC 6.2-2016.10, Linaro GCC 6.2-2016.11, Linaro GCC 6.2-2016.12, and Linaro GCC 6.3-2017.01. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.06/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.07/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.08/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.09/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.10/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.01/ 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 | Director - Linaro Core Technology and Tools ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net T: +1-612-424-1861

8 years, 7 months

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[ANNOUNCE] Linaro Binary Toolchain Release GCC 5.4-2017.01

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 5.4-2017.01 Release is now available. Notice: All Linaro GCC 5 series toolchain users should migrate to the latest version of the Linaro GCC 5 toolchain in order to mitigate potential security exposure to CVE-2015-7547. See the NEWS section below for details. Download release packages from: (sources) http://releases.linaro.org/components/toolchain/gcc-linaro/5.4-2017.01/ (binaries) http://releases.linaro.org/components/toolchain/binaries/5.4-2017.01/ 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/ A description of what each ABI or triplet is can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… 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 5.4-2017.01 http://releases.linaro.org/components/toolchain/gcc-linaro/5.4-2017.01/ Linaro glibc 2.21 (linaro/2.21) https://lists.gnu.org/archive/html/info-gnu/2015-02/msg00001.html Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) https://sourceware.org/ml/newlib/2013/msg01128.html Linaro binutils 2.25 (linaro_binutils-2_25-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 7.12 (gdb-7.12-branch) https://lists.gnu.org/archive/html/info-gnu/2016-10/msg00007.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 5 (as of Linaro GCC 5.4-2017.01) ============================================== * The soft-float targeted toolchains have now been configured to generate code using -mfloat-abi=soft. This makes arm-linux-gnueabi and armeb-linux-gnueabi toolchains use the “soft” FP ABI instead of “softfp”. Historically, TCWG’s toolchains provided both “soft” and “softfp” multilibs, but when switching from crosstool-ng to cbuildv2/abe (which support a single multilib) “softfp” multilib was choosen. Using “-mfloat-abi=soft” is a better choice for a gnueabi toolchain, since it doesn’t require cores to have a floating-point unit. This change should not break compatibility for toolchain users since the ABI will stay the same. The compiler and glibc libraries will not refernce FP instructions. * Include GCC fix for Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * Include GCC fix for Linaro bugzilla #1925: [regression] FAIL: libgomp.fortran/retval1.f90 -O1 execution test https://bugs.linaro.org/show_bug.cgi?id=1925 * Include GCC fix for Linaro bugzilla #2185: aarch64-linux-gnu-g++ internal compiler error: in curr_insn_transform https://bugs.linaro.org/show_bug.cgi?id=2185 * Backported glibc patch to simplify static malloc interposition [BZ #20432] to correct user identified issue. commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer Date: Fri Aug 26 22:40:27 2016 +0200 malloc: Simplify static malloc interposition [BZ #20432] * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 1.1G to 580M for aarch64-linux-gnu target with the gcc-5-branch. * Removed .la files from binary toolchain archive as these files break autotools builds. https://bugs.linaro.org/show_bug.cgi?id=2764 * The mingw toolchains are now archived using the rsync -L option in order to avoid problems with Windows extractors and symbolic links. https://review.linaro.org/#/c/16415/ This resolves the following user bugs: https://bugs.linaro.org/show_bug.cgi?id=2684 https://bugs.linaro.org/show_bug.cgi?id=2192 https://bugs.linaro.org/show_bug.cgi?id=2762 * Copy the libwinpthread DLL into the bin directories so it gets into the tmp directory before tar is run. https://review.linaro.org/#/c/13723/ * Increment binutils release date to 2016_02 to reflect the most recent commit: commit ef90a4718f535cbe6345b4e7168baea7b1972abf Author: Matthew Wahab <matthew.wahab(a)arm.com> Date: Tue Jan 12 16:35:30 2016 +0000 [ARM] Support ARMv8.2 RAS extension. * Baremetal sysroot names now contain 'newlib' rather than 'glibc'. * Manifests now contain relative paths rather than absolute paths. * Now generating proper manifest files. * Fixed pi requeue support in glibc 2.21 while allowing the existing 2.21 minimum kernel default setting. This was checked into the linaro/2.21/master branch. commit a68cafa11c500d8a49a3014c43c5152859d037ae Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) commit 6e5cb616b5b442ce8b2664ad673c0acf42a490ac Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST commit 9ac61c0047295696cbcdbc26bdc174c7bd25a3c8 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Backported support into GCC for Cortex-A32, Cortex-A35, and Cortex-R8. * Applied fix for CVE-2015-7547 - A stack-based buffer overflow in glibc's getaddrinfo() was corrected in glibc 2.23 and backported into glibc 2.21. https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html * ARMv8.1 Instruction Support - ARMv8.1 instructions support was checked into GCC and binutils. It has been backported into Linaro GCC 5.3 and Linaro binutils 2.25. * Backported -Bsymbolic-functions into Linaro binutils 2.25. * Performance related backports from Linaro GCC 5.2-2015.11, Linaro GCC 5.2-2015.12, and Linaro GCC 5.3-2016.01-1, Linaro GCC 5.3-2016.02, Linaro GCC 5.3-2016.03, Linaro GCC 5.3-2016.04, Linaro GCC 5.4-2016.06, Linaro GCC 5.4-2016.10 and Linaro GCC 5.4-2016.12 have been included. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.2-2015.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2015.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.01-1/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.02 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.03 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.04 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.06 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.10 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.12 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 | Director - Linaro Core Technology and Tools ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net T: +1-612-424-1861

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