- linaro-toolchain - lists.linaro.org

[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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 1 month

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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, 2 months

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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, 2 months

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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, 2 months

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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, 2 months

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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, 2 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, 2 months

1
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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, 2 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, 2 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, 2 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, 2 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, 2 months

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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, 2 months

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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, 2 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, 2 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, 2 months

1
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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, 2 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, 2 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, 2 months

1
0
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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

8 years, 2 months

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[ANNOUNCE] Linaro Binary Toolchain Release GCC 4.9-2017.01

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 4.9-2017.01 Release is now available. Notice: All Linaro GCC 4.9 series toolchain users should migrate to the latest version of the Linaro GCC 4.9 toolchain in order to mitigate potential security exposure to CVE-2015-7547. See the NEWS section below for details. Download release packages from: http://releases.linaro.org/components/toolchain/gcc-linaro/4.9-2017.01/ http://releases.linaro.org/components/toolchain/binaries/4.9-2017.01/ 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 4.9-2017.01 http://releases.linaro.org/components/toolchain/gcc-linaro/4.9-2017.01/ FSF eglibc 2.19 (linaro_eglibc-2_19) http://www.eglibc.org/cgi-bin/viewvc.cgi/branches/eglibc-2_19/libc/NEWS?vie… Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) https://sourceware.org/ml/newlib/2013/msg01128.html Linaro binutils 2.24 (linaro_binutils-2_24-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 7.10 (gdb-7.10-branch) https://sourceware.org/ml/gdb-announce/2015/msg00005.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 4.9 (as of Linaro GCC 4.9-2017.01) ============================================== * The soft-float targeted toolchains have switched to -mfloat-abi=soft from -mfloat-abi=softfp. This makes arm-linux-gnueabi and armeb-linux-gnueabi toolchains use “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. * 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 830M to 480M for aarch64-linux-gnu target with the gcc-4.9-branch. * Removed .la files from binary installation 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/ * Applied fix for CVE-2015-7547 - A stack-based buffer overflow in glibc's getaddrinfo() was corrected in glibc 2.23 and backported into Linaro eglibc 2.19 (linaro_eglibc-2_19). https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html 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, 2 months

1
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[ANNOUNCE] Linaro GCC 5 and 6 2017.02 snapshots

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2017.02 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+svn245201 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/6.3-2017.02/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 6.3+svn245201 * Linaro BZ #2562: [PR target/78253] Call weak function instead of strong when called through pointer * Backport of [Bugfix] [AArch32] PR target/71270 Fix neon_valid_immediate for big-endian * Backport of [Bugfix] [AArch32] PR target/77439 Wrong code for sibcall with longcall, APCS frame and VFP * Backport of [Bugfix] [AArch32] PR target/78364 Add proper restrictions to zero and sign_extract patterns operands * Backport of [Bugfix] [AArch32] PR target/78694 Avoid invalid RTL sharing in minipool code * Backport of [Bugfix] [AArch32] PR target/79145 Fix xordi3 expander for immediate operands in iWMMXt * Backport of [Bugfix] [AArch64] PR target/78362 Make sure to only take REGNO of a register * Backport of [Bugfix] PR rtl-optimization/79121 Incorrect expansion of extend plus left shift * Backport of [AArch32] 1/2 Use generic_extra_costs in all remaining tuning structs * Backport of [AArch32] 2/2 Remove old rtx costs * Backport of [AArch32] arm_neon.h: Add artificial and gnu_inline * Backport of [AArch32] Improve Cortex-a53 integer scheduler * Backport of [AArch32] Improve Thumb allocation order * Backport of [AArch32] Merge negdi2 patterns * Backport of [AArch64] 1/2 Add bfx attribute * Backport of [AArch64] 2/2 Add bfx attribute * Backport of [AArch64] Fix bootstrap on aarch64-*-freebsd * Backport of [AArch64] Improve SHA1 scheduling * Backport of [AArch64] Purge leftover occurrences of aarch64_nopcrelative_literal_loads * Backport of [AArch64] Split X-reg UBFIZ into W-reg LSL when possible * Backport of [AArch64] Split X-reg UBFX into W-reg LSR when possible * Backport of [AArch64] Tweak Cortex-A57 vector cost * Backport of [Testsuite] [AArch64] PR target/77634 some vectorized testcases fail with -mcpu=thunderx * Backport of [Testsuite] [AArch64] PR target/77635 load/store pair testcases need to use -mcpu=generic * Backport of [Testsuite] Fix format string in AdvSIMD tests * Backport of [Testsuite] Require shared effective target for some lto.exp tests Linaro GCC 5 monthly snapshot[1] is based on FSF GCC 5.4+svn245200 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/5.4-2017.02/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 5.4+svn245200 * Linaro BZ #2785: PR target/66785 Internal compiler error in record_operand_use * Linaro BZ #2562: [PR target/78253] Call weak function instead of strong when called through pointer ** 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

8 years, 3 months

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[ACTIVITY] 6-10 February 2017

by Yao Qi

~ Progress ~ * AArch64 OpenOCD. TCWG-947, [2/10] After asking Peter G. about OpenOCD + Hikey, he sent me his working Hikey+Cable to me. * SVE GDB patches review. TCWG-1040, [4/10] Review some patches, and suggest Alan how to split the patch to easily make some progress. Think about the needed change to GDB target description. * Kernel awareness debugging patch review. [2/10] Manage to write a small test case so that we can somehow test the new feature in user space in gdb testsuite. Think about how does Linaro move on about this project. * Schengen visa application. [2/10] Visa application centre doesn't accept my documents because my documents copy are tow-side printed. Has to book another appointment and go to London again . ~ Plan ~ * TCWG-947, Try opencod with Peter G.'s board. * TCWG-1040, prototype of new GDB/GDBserver target description. -- Yao Qi

8 years, 3 months

1
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[ACTIVITY] 6-10 February 2017

by Christophe Lyon

== Progress == * Validation - more work on use of containers * GCC - reported a few failures upstream - added a few missing poly64_t intrinsics (arm, aarch64) * misc (conf-calls, meetings, emails, ....) == Next == * ABE & Jenkins jobs patches reviews and bug fixes

8 years, 3 months

1
0
0 0

[ACTIVITY] Week 06

by Yvan Roux

o Teaching activities (4/10) == Progress == o Linaro GCC/Validation (2/10) * GCC 4.9 2017.01: - Release deployed * GCC 5.4 2017.01: - Release deployed * GCC 6.3 and 5.4 2017.02 source snapshots: - FSF branch merges done - snapshot process on-going o LLVM (1/10) * Familiarizing with sources, tcwg helpers, etc ... o Misc (3/10) * Various meetings and discussions. == Plan == o release source snapshots o tree-reassociation

8 years, 3 months

1
0
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[ACTIVITY] 6 - 10 Feb 2017

by Prathamesh Kulkarni

== This Week == * gimple-fe (4/10) a) Add support for abs_expr b) Add support for fma_expr * TCWG-1010 (4/10) - Continue working on prototype, dealing with unexpected ICE's :( * Misc (2/10) - Reading up on gcc's inliner - Meetings == Next Week == - TCWG-1010, TCWG-1005, gimple-fe - Benchmarking LTO using spec2xxx-utils on tx1/tk1

8 years, 3 months

1
0
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[ACTIVITY] 6 - 10 Feb 2017

by Omair Javaid

=== This Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] [9/10] -- Submitted AArch64 hardware breakpoint patch for review. -- Updates after upstream comments. -- Added Arm hardware breakpoint support code. -- Testing and debugging of Arm code on android arm device. Miscellaneous Activities [1/10] -- Meetings, Emails etc. === Next Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] -- Write breakpoint command based test-cases. -- Write RSP packets based test-cases. -- Submit patch for review after edits and upgrades. GDB Kernel Awareness -- Background study and understand existing patches

8 years, 3 months

1
0
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[ACTIVITY] 6 - 10 February 2017

by Peter Smith

== Progress == [TCWG-617] Upstreamed a patch to make copy relocations use synthetic sections. This allows us to remove the output section relative dynamic relocation which is important for range extension Thunks Did some design work for range extension Thunks. Did some refactoring to merge PLT and IFunc PLT at maintainers request [BUD17] Researched my forthcoming Connect presentation and wrote about 3/5 of the slides == Plan == Finish Connect presentation early next week as I'll be on holiday the week before Connect. Start implementing range extension Thunks.

8 years, 3 months

1
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[ACTIVITY] 6 - 10 February 2017

by Diana Picus

== Progress == * [ARM GlobalISel] Add support for fp arguments [TCWG-1029] [5/10] - Committed support for single precision hard float and soft-fp ABIs - Work in progress on supporting double precision * Misc [5/10] - Meetings, mailing lists, code reviews - Reverted / fixed a few patches that broke the buildbots - Tested and uploaded binaries for release candidate 2 on AArch64 == Plan == * More GlobalISel

8 years, 3 months

1
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Compiler selection for log10/Qsort on ARM64

by Bharat Bhushan

Hi All, I am working on log10/qsort benchmarks on ARM64 (ARMv8) processor, I want to check if we have experience with these benchmarks. Actually i am looking for a compiler version which gives best results with these benchmarks and specific compiler optimization (in my case is see O3 gives best numbers) ? I have tried GCC-4.9 and GCC-6.2 with log10 benchmark and my observations are: 1) With gcc 4.9 - 140 us 2) With GCC 6.2 - 150 us My compilation flags are "-O3 -ftree-vectorize -funroll-all-loops --param max-inline-insns-auto=550 --param case-values-threshold=30 -falign-functions=32 -ftracer" So it seems like gcc-6.2 is better, am i missing something, should i use some better compiler flags? Thanks -Bharat

8 years, 3 months

3
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[Activity] 30 Jan - 3 Feb 2017

by Yao Qi

~ Progress ~ * AArch64 OpenOCD. [6/10] Solder and desolder the JTAG joint on HiKey. Tried different JTAG options, but still can't get OpenOCD working. * Patches review. [3/10] ** ILP32 GDB. Help cavium to reduce fails from 500 to 70. GDB patch is OK, but there are still some regressions on ilp32 vs. lp64 on aarch64. Steve is still investigating on them. ** SVE GDB. Remove MAX_REGISTER_SIZE. Look people tend to agree the way removing MAX_REGISTER_SIZE. Looking forward to Alan's patches :) ** Kernel awareness debugging. Reviewed the cover letter of IBM's patches. Want to share the common kernel debugging part between IBM and Linaro. * Schengen visa. [1/10] Fill in more in application form. Document preparation. ~ Plan ~ * Kernel awareness debugging. Continue reviewing IBM's patches, and figure out how to share the code. * Go to London for visa application on Friday. -- Yao Qi

8 years, 3 months

1
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[ACTIVITY] 30 Jan-3 Feb 2017

by Christophe Lyon

== Progress == * Validation - prototyping better use of containers for validations * GCC - reported a few failures upstream * misc (conf-calls, meetings, emails, ....) == Next == * ABE & Jenkins jobs patches reviews and bug fixes * GCC: - bug fixing

8 years, 3 months

1
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[ACTIVITY] Week 05

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * GCC 4.9 2017.01: - prepared final release * GCC 5.4 2017.01: - sources and binaries ready to publish * GCC 6.3 2017.02: - Cherry-picked bug fix into release branch - ready for RC2 * Lot of release notes iterations and discussions * Backports reviews * Tree reassociation: on-going o Misc (3/10) * Various meetings and discussions. == Plan == o Releases... o Tree reassociation

8 years, 3 months

1
0
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[ACTIVITY] 30 Jan - 3 Feb 2017

by Omair Javaid

=== This Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] [9/10] -- Wrote multi-threaded implementation of hardware breakpoints. -- Added thread specific handlers to create hardware breakpoints. -- Basic multi-threaded test application works after some fixes and debugging. -- Committed fix for LLDB AArch64 android gcc build failure Miscellaneous Activities [1/10] -- Meetings, Emails etc. === Next Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] -- Write LLDB testsuite test cases for hardware breakpoints -- Code clean-up and first version patch submission -- Start work on Arm register context changes for hardware breakpoints.

8 years, 3 months

1
0
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[ACTIVITY] 30 Jan - 3 Feb 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1006 (2/10) - Created prototype patch for propagating returns_nonnull along the same lines as malloc. * TCWG-1010 (2/10) - Continuing to work on prototype for bitwise dce * ICE with __builtin_abs with -fgimple (2/10) - Posted patch upstream * Sick leave (2/10) * Misc (2/10) - Setting up docker on tcwg-ex40-01 - Meetings == Next Week == - TCWG-1010, TCWG-548

8 years, 3 months

1
0
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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 6.3-2017.02-rc1

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 6.3-2017.02-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: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02-rc1/ http://snapshots.linaro.org/components/toolchain/binaries/6.3-2017.02-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/ 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-rc1 http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02-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_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/?a=project_list&s=toolchain%2F&btnS=Search NEWS for GCC 6 (as of Linaro GCC 6.3-2017.02-rc1) ================================================== * 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 * 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. * Removed .la files from binary toolchain archive as these files break autotools builds. https://bugs.linaro.org/show_bug.cgi?id=2764 * The Linaro GCC 6.3-2017.01 snapshot added further enablement for ARMv8-M. * The Linaro GCC 6.2-2016.12 snapshot added various AArch64 bugfixes and optimizations. * Backported glibc patch to simplify static malloc interposition [BZ #20432] to correct user identified issue. 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 022bd2995640626d9efb6a839884c5e1c7c5e133 Author: Christophe Lyon <christophe.lyon(a)linaro.org> Date: Wed Oct 19 14:11:50 2016 +0200 Re-enable malloc_lock for newlib-nano * Backported rawmemchr patch into Linaro newlib 2.4. commit 5357441171f2409fb759112bc6a00d3e672374d9 Author: Christophe Lyon <christophe.lyon(a)linaro.org> Date: Wed Oct 19 14:09:51 2016 +0200 Add rawmemchr * Backported strlen fix when using Thumb-2 and -Os -marm into Linaro newlib 2.4. commit f194ff4d5e1e304ac2a8d438d7abcbffd2dba757 Author: Christophe Lyon <christophe.lyon(a)linaro.org> Date: Wed Oct 19 14:05:23 2016 +0200 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 bda499cb9d2b97075f74df9bfb38b23ff4d12ac2 Author: Christophe Lyon <christophe.lyon(a)linaro.org> Date: Wed Oct 19 13:59:52 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, 3 months

1
0
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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 4.9-2017.01-rc1

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 4.9-2017.01-rc1 Release-Candidate is now available. This is a courtesy toolchain. The Linaro GCC 4.9 toolchain is officially out of maintenance. This release is being provided in order to merge in the last FSF GCC 4.9 branch changes into the Linaro GCC 4.9 release. Notice: All Linaro GCC 4.9 series toolchain users should migrate to the latest version of the Linaro GCC 4 toolchain in order to mitigate potential security exposure to CVE-2015-7547. See the NEWS section below for details. Download release-candidate packages from: http://snapshots.linaro.org/components/toolchain/gcc-linaro/4.9-2017.01-rc1/ http://snapshots.linaro.org/components/toolchain/binaries/4.9-2017.01-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/ Host Requirements ================== Linaro officially supports the current and previous Ubuntu LTS releases (as of the time of this release). This does not mean that the toolchain will not work on other/older Linux distributions. See the following for the life-time of Ubuntu LTS releases. https://wiki.ubuntu.com/Releases The host system upon which the cross-compiler will run requires a minimum of glibc 2.14, because of API changes to glibc's memcpy API. https://bugs.linaro.org/show_bug.cgi?id=1869 Package Versions ================= Linaro GCC 4.9-2017.01-rc1 FSF eglibc 2.19 (linaro_eglibc-2_19) Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) Linaro binutils 2.24 (linaro_binutils-2_24-branch) FSF GDB 7.10 (gdb-7.10-branch) Linaro toolchain package git branches are hosted at: https://git.linaro.org/toolchain NEWS for GCC 4.9 (as of Linaro GCC 4.9-2017.01-rc1) ================================================== * The soft-float targeted toolchains have switched to -mfloat-abi=soft from -mfloat-abi=softfp. This makes arm-linux-gnueabi and armeb-linux-gnueabi toolchains use “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. * Removed .la files from binary installation as these files break autotools builds. https://bugs.linaro.org/show_bug.cgi?id=2764 * 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 830M to 480M for aarch64-linux-gnu target with the gcc-4.9-branch. * The armv8l-linux-gnueabihf targetted toolchain is now built using --with-mode=thumb (like all of the other cross toolchains) rather than the default which is ARM mode. * Applied fix for CVE-2015-7545 - A stack-based buffer overflow in glibc's getaddrinfo() was corrected in glibc 2.23 and backported into Linaro eglibc 2.19 (linaro_eglibc-2_19). https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html * See the following Linaro GCC snapshot: http://snapshots.linaro.org/components/toolchain/gcc-linaro/4.9-2015.10/ Contact Linaro =============== File bugs at http://bugs.linaro.org For Linaro member support see http://support.linaro.org For Linaro community support email linaro-toolchain(a)lists.linaro.org -- Ryan S. Arnold | Director - Linaro Core Technology and Tools ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net

8 years, 3 months

1
0
0 0

[ACTIVITY] Week 04

by Yvan Roux

o Teaching activity (4/10) == Progress == o Linaro GCC/Validation (5/10) * GCC 4.9 2017.01: - prepared source and binaries for RC1 - release notes to be finalized for publication * GCC 5.4 2017.01 - Rebuilt binaries for the release - Release notes almost completed * Reviews * Back to tree reassociation o Misc (1/10) * Various meetings and discussions. == Plan == o GCC 4.9 release o Backports review o Tree reassociation

8 years, 3 months

1
0
0 0

[ACTVITY] 23-27 January 2017

by Christophe Lyon

== Progress == * Validation - working on improvements for containers startup - other improvements/bug fixes * GCC - reported a few failures upstream * misc (conf-calls, meetings, emails, ....) - bugzilla followup == Next == * ABE & Jenkins jobs patches reviews and bug fixes * GCC

8 years, 3 months

1
0
0 0

[ACTIVITY] 23 - 27 January 2017

by Omair Javaid

=== This Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] [6/10] -- Fixed hardware breakpoints routines in LLDB AArch64 register context. -- Code tweaks in NativeProcessLinux/NativeThreadLinux/ProcessGDBRemote -- Hardware breakpoint working with single threaded applications -- Submitted a fix for LLDB AArch64 android gcc build failure -- Wrote single and multi threaded test applications for test hardware breakpoints. Monitor LLDB buildbot for minimum down time. [TCWG-712] [2/10] -- Investigate random test failures on Arm and add them to flakey tests. -- Buildbot down due to UPS failure -- Got UPS fixed. Restart builders and testers. Miscellaneous Activities [2/10] -- Meetings, Emails etc. -- Hungary visa passport collection -- Background study about GDB Linux Kernel awareness === Next Week === LLDB ARM/AArch64 hardware breakpoints [TCWG-717] -- Continue work on hardware breakpoint register context routines Arm/AArch64 -- Find a way to install hardware breakpoints on multiple threads.

8 years, 3 months

1
0
0 0

[ACTIVITY] Jan 23 - Jan 27

by Yao Qi

# Progress # * TCWG-984, PR 20939, GDB aborts if there is an error in disassembly. Done. All patches are committed to mainline. [3/10] * Patch reviews, a lot, [5/10] ** Hold one of ILP32 BFD patch because it may affect aarch64 GDB, Reviewed ILP32 GDB patch, and convince them not to add new target descriptions for ILP32, to make our life easier in the future. Otherwise, we need two copies of target description for each new hardware feature, such as v8.3, SVE, etc. ** Try to hold one disassembler options patch, which affects ARM and GDB. Gave some comments on the interface design, but looks I am late. ** Finish the review on DW_OP_implicit_value. Met some grey area in DWARF spec. * Atomicity of concurrent modification on ptrace. [1/10] It is unclear weather debugging can modify memory for one thread while other threads are running. After the discussions with some kernel guy, PTRACE_POKETEXT is atomic, but GDB use it in a non-atomic way when writing 2-byte aligned 32-bit thumb-2 instruction. Suggested a workaround upstreams. * Misc, meeting [1/10] # Plan # * ILP32 patch review. * Carefully read IBM's kernel debugging patches. * Set up AArch64 bare debugging with GDB, OpenOCD, JTAG and HiKey. Soldering is needed. -- Yao Qi

8 years, 3 months

1
0
0 0

[ACTIVITY] 23 - 27 January 2017

by Peter Smith

[TCWG-614] Range extension thunks - LLD now uses synthetic sections for Thunks. ARM Thunks now have symbols and mapping symbols. As a side-effect we can now create local symbols in synthetic sections so I've added them to the ARM PLT sections. [Misc] - Wrote 3 lines of lld 4.0 release notes for ARM - Some upstream patch review in rtdyld and ilp32 support in the assembler - Presented my personal Linaro objectives to the TCWG leads. Plans for next week: - Complete Fosdem presentation, will be leaving early Friday to catch the Eurostar - Respond to any post commit review comments on Thunks - Start work on range extension thunks, the previous commits to use synthetic sections were pre-requisites to range extension thunks, but added little new user-visible functionality. Planned absences: - Fosdem 2017 will need to leave early on Friday 4th Feb - Holiday 21st Feb to 1st March - Linaro Connect 6th to 10th March Euro LLVM 27-28 March (Linaro's request and cost-code)

8 years, 3 months

1
0
0 0

[ACTIVITY] 23 - 27 January 2017

by Diana Picus

== Progress == * National holiday on Tuesday [2/10] * [AArch64] Investigate PR30225 [TCWG-1021] [2/10] - This was a bug related to the code alignment factor for the debug frame - Decided it was not a correctness issue and the size savings for using a different factor are probably not noticeable in practice, so I closed the bug * [ARM GlobalISel] Add support for integers < 32 bits wide [TCWG-980] [1/10] - Committed all 3 patches upstream, reworked the third one a bit * [ARM GlobalISel] Add support for pointers [TCWG-1028] [1/10] - Started working on a patch * Misc [4/10] - Mailing list, code reviews, meetings - Buildbots: reverted 2 sets of patches, noticed an issue with some buildbots (which Renato ended up investigating) - FOSDEM slides == Plan == * [ARM GlobalISel] Add support for pointers [TCWG-1028]

8 years, 3 months

1
0
0 0

[ACTIVITY] 16 - 20 January 2017

by Omair Javaid

=== This Week === Investigate LLDB testsuite failures on Pine64 target (AArch32 and AArch64 modes) [TCWG-1012] [4/10] -- Capture tests leaving behind runaway processes, found 3 so far. -- Capture random failures and mark them flakey. ARM/AArch64 hardware breakpoints [TCWG-717] [5/10] -- Code review and prepared debug environment -- Looked into Android Arm64 build failure with debug info. Miscellaneous Activities [1/10] -- Meetings, Emails etc. === Next Week === ARM/AArch64 hardware breakpoints [TCWG-717] -- Fix hardware breakpoints routines in LLDB AArch64 register context. Investigate LLDB testsuite failures on Pine64 target (AArch32 and AArch64 modes) [TCWG-1012] -- Keep and eye on tests marked flakey or any new random failures.

8 years, 3 months

1
0
0 0

[ACTIVITY] Week 03

by Yvan Roux

o Teaching activity (2/10) == Progress == o Linaro GCC/Validation (5/10) * GCC 4.9 snapshot: - completed snapshot process - waiting for linaro bug #1118 status before releasing or re-spinning the snapshot. https://bugs.linaro.org/show_bug.cgi?id=1118 * Made an published GCC 5.4 RC2, preparing the release o Misc (3/10) * Various meetings and discussions. == Plan == o GCC 4.9 snapshot and binaries o GCC 5.4 release

8 years, 3 months

1
0
0 0

[ACTIVITY] 16 - 20 Jan 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (malloc attr propagation) (4/10) - Extended for pointer comparisons - Patch review from Kugan - Removed some cruft from the patch * TCWG-1010 (bitwise dce propagation) (4/10) - Started working on prototype * Misc (2/10) - Looked at Wheader-guard - Building chromium with gcc - Meetings == Next Week == - TCWG-1005, TCWG-1010

8 years, 3 months

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[ACTIVITY] 16-20 January 2017

by Christophe Lyon

== Progress == * Validation - improvements and bug fixes * GCC - reported a few failures upstream - analyzing a bug report on our 4.9 branch * misc (conf-calls, meetings, emails, ....) - bugzilla followup - Connect registration: done == Next == * ABE & Jenkins jobs patches reviews and bug fixes * GCC: - bug fixing

8 years, 3 months

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[Activity] 16 - 20 Jan

by Yao Qi

~ Progress ~ * TCWG-984, PR 20939, GDB aborts if there is an error in disassembly. [3/10] It is a blocker to 7.12.1 release. Fixed it in 7.12 branch. Address comments and manage reviewer's expectations on the patches for mainline. * Approved two Alan's SVE GDB preparatory patches. [1/10] * Reviewed Dave Martin's SVE user space VL control API. [1/10] Can't figure out a case that debugger or debugger user wants to change VL. * Review DWARF patch in big endian on DW_OP_implicit_value. [2/10] Played with the patch, and use part of it in existing gdb tests. Found other GDB bugs, and fixed them. Some readings on DWARF 5. Will post my patches next week and continue reviewing the DWARF patch. * Booked Hungary visa appointment. * Training. [3/10] ~ Plan ~ * TCWG-984, GDB aborts if there is an error in disassembly. * Carefully read IBM's kernel debugging patches. * Set up AArch64 bare debugging with GDB, OpenOCD, JTAG and HiKey. Soldering is needed. -- Yao Qi

8 years, 3 months

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[Activity] 16 - 20 January 2017

by Peter Smith

[TCWG-614] Range extension thunks Started process of upstreaming the conversion of Thunks to SyntheticSections. - Patch 1 of 3 committed, move Thunk Creation later in the link step. - Patch 2 of 3 add support for local symbol creation in upstream review - Patch 3 of 3 waiting for patch 2 Made a patch to output mapping symbols in PLT to test local symbol creation. Not recommending this for inclusion in lld yet, but have included as a way of testing 2. Responded to comment on implementation and overall Thunks proposal. Plans for next week: Yet more range extension work, hope to get patches 2 and 3 above committed.

8 years, 3 months

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[ACTIVITY] 16 - 20 January 2017

by Diana Picus

== Progress == * Out of office Mon-Wed [6/10] * [ARM] Use AddDefaultPred everywhere [TCWG-987] - Committed upstream * LLVM AArch64 4.0.0 [ TCWG-1008] [1/10] - Ran the tests for rc1, everything went smoothly * [AArch64] Investigate PR30225 [TCWG-1021] [1/10] - Someone noticed that llvm-mc is using a different code/data alignment factor for the call frame information than gas, trying to figure out if that would actually confuse a debugger * Misc [2/10] - Mailing lists, code reviews, meetings etc

8 years, 3 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 5.4-2017.01-rc2

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 5.4-2017.01-rc2 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: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.01-rc2/ http://snapshots.linaro.org/components/toolchain/binaries/5.4-2017.01-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/ 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-rc2 Linaro glibc 2.21 (linaro/2.21) Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) Linaro binutils 2.25 (linaro_binutils-2_25-branch) FSF GDB 7.12 (gdb-7.12-branch) Linaro toolchain package git branches are hosted at: http://git.linaro.org/?a=project_list&s=toolchain%2F&btnS=Search NEWS for Linaro GCC 5.4-2017.01-rc2 ==================================== * Include GCC fix for upstream bugzilla 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 * 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 * 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

8 years, 3 months

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[ACTIVITY] 09 - 13 January 2017

by Omair Javaid

=== This Week === Monitor LLDB buildbot for minimum down time. [TCWG-712] [1/10] -- LLDB Arm build was broken and then fixed upstream but a buildbot script bug. -- Fixed buildbot script to make sure not every type of build is refreshed after a breakage. Investigate LLDB testsuite failures on Pine64 target (AArch32 and AArch64 modes) [TCWG-1012] [3/10] -- Investigated and fixed TestRegisterVariables (https://reviews.llvm.org/D28666) -- Fixed a log issue which I initially thought was a bug. (https://reviews.llvm.org/rL291889) -- No further AArch64 failures except for one test timedout needs further investigation. -- Some tests fail randomly on AArch32 but pass when run individually. More investigation needed. LLDB Arm/AArch64 Investigate and fix testsuite crashes (Pine64 Crashes) [TCWG-792] [2/10] -- There was some problem occuring when multiple versions of python are installed on tester. -- Also some tests are leaving behind runaway processes. -- Cleaned up testers removed python issue ended up reducing test time to 3 minutes. -- Trying to track runaway processes. Miscellaneous Activities [4/10] -- Travel to Islamabad for Hungary visa interview (9th-10th Jan 2017). -- Meetings, Emails etc. === Next Week === ARM/AArch64 hardware breakpoints [TCWG-717] -- Investigate current status and create task breakdown. Investigate LLDB testsuite failures on Pine64 target (AArch32 and AArch64 modes) [TCWG-1012] -- Further tracking on runaway processes when running AArch32 testsuite. -- Investigation of timedout tests on AArch64.

8 years, 3 months

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[ACTIVITY] Week 02

by Yvan Roux

o Teaching activity (4/10) == Progress == o Linaro GCC/Validation (4/10) * Merge FSF GCC 6 branch into Linaro one * Backports reviews * Delivered snapshot of 6.3-2017.01 source package * Merge FSF 4.9 branch into Linaro one o Misc (2/10) * Various meetings and discussions. == Plan == o Last GCC 4.9 snapshot o GCC 5.4 release

8 years, 3 months

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[ACTIVITY] 9 - 13 Jan 2017

by Peter Smith

[TCWG-614] Long branch thunks: Implemented a prototype of the existing Thunk implementation using Synthetic (Linker created sections) and moved it close to the area it will need to go for Long Branch Thunk work. Worked on this exclusively all week. Plans for next week: [TCWG-614] Long branch thunks: Tidy up and refactor prototype to a point where I can post for upstream review. This won't be long-branch thunk support but it will be a significant intermediate step. Do a draft plan of Connect submission and decide how long I need.

8 years, 4 months

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[ACTIVITY] 9 - 13 January 2017

by Diana Picus

== Progress == * [ARM] Use AddDefaultPred everywhere [TCWG-987] [1/10] - Proposed a refactoring first [TCWG-1015] - Rebased initial patch after the refactoring, still waiting for review * Refactor AddDefaultPred [TCWG-1015] [4/10] - Initial implementation was a bit heavyweight, so I worked on a simpler version based on people's suggestions - Committed upstream * Misc [5/10] - Got up to speed after vacation - Booked travel for Connect and EuroLLVM - FOSDEM slides - Upstream code reviews - Reverted and ran pre-commit tests for some compiler-rt patches that broke the buildbots == Plan == * 3 days off (Mon-Wed) * [ARM GlobalISel] Add support for integers < 32 bits wide [TCWG-980] - I have 3 patches in upstream review, I will keep pinging them - Putting GlobalISel work on hold until these patches go through

8 years, 4 months

1
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[ACTIVITY] Jan 09 - Jan 13

by Yao Qi

~ Progress ~ * TCWG-984 Handle exception/error in disassembly, [4/10] Patches are posted and reviewed. Three patches to opcodes are approved and committed. V2 is done to address comments on C++ and unit tests. V2 are being tested. * Patches review, [4/10] ** Review some preparatory SVE patches from Alan. They are good to me, but I expect Joel or someone else to take a look as well. ** Linux kernel awareness debugging. Review the patch sent from linaro, but some one from IBM sends a similar patch series. These two patch sets look similar, but are different on some parts. * Conversation with Paul (openocd maintainer) on irc. [1/10] They really want me to look at some gdb+openocd issues. My Hikey will arrive soon, but they give me some explanations on why cortex-m board is better than cortex-a board in bare-metal, because of simplicity. I explained to them why Linaro focused on cortex-a devices so far. * Linaro Connect. [1/10] Register the connect, book flight and hotel. ~ Plan ~ * TCWG-984 and TCWG-333 * Carefully read Dave M's SVE user space VL control API. * Carefully read IBM's kernel debugging patches. -- Yao Qi

8 years, 4 months

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[ACTIVITY] 9 - 13 Jan 2016

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (malloc attr propagation) (6/10) - Worked through bootstrap failures - Patch found 35 functions that could have malloc attribute during gcc build - The current analysis to find candidate functions is too restrictive, working on improving that. - Wrote few test-cases. * TCWG-1006 (returns_nonnull attr propagation) (2/10) - WIP prototype patch * TCWG-1010 (bitwise-dce) (1/10) - Going thru demanded-bits analysis * Misc (1/10) - Meetings == Next Week == - Continue working on TCWG-1005, TCWG-1006 and TCWG-1010

8 years, 4 months

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[ACTIVITY] 9-13 January 2017

by Christophe Lyon

== Progress == * Validation - improvements and bug fixes: ABE #2764. and make_docs problem for gcc-4.9 builds) Enhanced abe validation to check builds of gcc-4.9, 5 and 6. make-and-test-release now works. buildbench now works * GCC - Committed fix for pr78253 - discussions on releases (packaging, process improvements) - a few backports for our 6.2-2017.01 snapshot * misc (conf-calls, meetings, emails, ....) - bugzilla followup - moving from ex40-01 to dev-01 - Connect registration: on-going == Next == * ABE & Jenkins jobs patches reviews and bug fixes * GCC: - bug fixing

8 years, 4 months

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Re: Does Linaro's GCC 4.9 include Crypto extensions and intrinsics?

by Jeffrey Walton

Thanks guys, that was it. I did not realize the build system was omitting the flags. On Fri, Jan 13, 2017 at 2:23 AM, Pinski, Andrew <Andrew.Pinski(a)cavium.com> wrote: > Can you try -march=armv8+crypto ? > > -----Original Message----- > From: linaro-toolchain [mailto:linaro-toolchain-bounces@lists.linaro.org] On Behalf Of Jeffrey Walton > Sent: Thursday, January 12, 2017 10:56 PM > To: Linaro Toolchain Mailman List <linaro-toolchain(a)lists.linaro.org> > Subject: Does Linaro's GCC 4.9 include Crypto extensions and intrinsics? > > Please forgive my ignorance. I'm working on a Pine64 dev-board Pine64 supplies Linaro's GCC 4.9.2 toolchain. > > I am catching a compile error, and I am trying to determine why. > > Does Linaro's GCC 4.9 provide AES and SHA intrinsics?

8 years, 4 months

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Does Linaro's GCC 4.9 include Crypto extensions and intrinsics?

by Jeffrey Walton

Please forgive my ignorance. I'm working on a Pine64 dev-board Pine64 supplies Linaro's GCC 4.9.2 toolchain. I am catching a compile error, and I am trying to determine why. Does Linaro's GCC 4.9 provide AES and SHA intrinsics? ********** $ uname -a Linux pine64 3.10.102-2-pine64-longsleep #66 SMP PREEMPT Sat Jul 16 10:53:13 CEST 2016 aarch64 GNU/Linux $ gcc --version gcc (Debian/Linaro 4.9.2-10) 4.9.2 Copyright (C) 2014 Free Software Foundation, Inc. ********** $ CFLAGS="-DMBEDTLS_HAVE_ARMV8A_CE=1" make DEBUG=1 V=1 CC aes_armv8a_ce.c aes_armv8a_ce.c: In function 'mbedtls_armv8a_ce_aes_crypt_ecb': aes_armv8a_ce.c:65:4: warning: implicit declaration of function 'vaeseq_u8' [-Wimplicit-function-declaration] state_vec = vaeseq_u8( state_vec, roundkey_vec ); ^ aes_armv8a_ce.c:65:14: error: incompatible types when assigning to type 'uint8x16_t' from type 'int' state_vec = vaeseq_u8( state_vec, roundkey_vec ); ^ aes_armv8a_ce.c:67:4: warning: implicit declaration of function 'vaesmcq_u8' [-Wimplicit-function-declaration] state_vec = vaesmcq_u8( state_vec ); ^ aes_armv8a_ce.c:67:14: error: incompatible types when assigning to type 'uint8x16_t' from type 'int' state_vec = vaesmcq_u8( state_vec ); ^ aes_armv8a_ce.c:74:13: error: incompatible types when assigning to type 'uint8x16_t' from type 'int' state_vec = vaeseq_u8( state_vec, roundkey_vec ); ^ aes_armv8a_ce.c:84:4: warning: implicit declaration of function 'vaesdq_u8' [-Wimplicit-function-declaration] state_vec = vaesdq_u8( state_vec, roundkey_vec ); ^ aes_armv8a_ce.c:84:14: error: incompatible types when assigning to type 'uint8x16_t' from type 'int' state_vec = vaesdq_u8( state_vec, roundkey_vec ); ^ aes_armv8a_ce.c:86:4: warning: implicit declaration of function 'vaesimcq_u8' [-Wimplicit-function-declaration] state_vec = vaesimcq_u8( state_vec ); ^ aes_armv8a_ce.c:86:14: error: incompatible types when assigning to type 'uint8x16_t' from type 'int' state_vec = vaesimcq_u8( state_vec ); ^ aes_armv8a_ce.c:93:13: error: incompatible types when assigning to type 'uint8x16_t' from type 'int' state_vec = vaesdq_u8( state_vec, roundkey_vec ); ^ aes_armv8a_ce.c: In function 'mbedtls_armv8a_ce_gcm_mult': aes_armv8a_ce.c:138:2: warning: implicit declaration of function 'vmull_high_p64' [-Wimplicit-function-declaration] r1 = (uint8x16_t)vmull_high_p64( (poly64x2_t)a_p, (poly64x2_t)b_p ); ^ aes_armv8a_ce.c:138:2: error: can't convert between vector values of different size aes_armv8a_ce.c:141:2: error: can't convert between vector values of different size t0 = (uint8x16_t)vmull_high_p64( (poly64x2_t)a_p, (poly64x2_t)t0 ); ^ aes_armv8a_ce.c:150:2: error: can't convert between vector values of different size t0 = (uint8x16_t)vmull_high_p64( (poly64x2_t)r1, (poly64x2_t)p ); ^ Makefile:170: recipe for target 'aes_armv8a_ce.o' failed make[1]: *** [aes_armv8a_ce.o] Error 1 Makefile:17: recipe for target 'lib' failed make: *** [lib] Error 2 ********** CC sha1_armv8a_ce.c sha1_armv8a_ce.c: In function 'mbedtls_armv8a_ce_sha1_process': sha1_armv8a_ce.c:99:2: warning: implicit declaration of function 'vsha1h_u32' [-Wimplicit-function-declaration] e1 = vsha1h_u32( a ); ^ sha1_armv8a_ce.c:100:2: warning: implicit declaration of function 'vsha1cq_u32' [-Wimplicit-function-declaration] abcd = vsha1cq_u32( abcd, e, wk0 ); /* 0 */ ^ sha1_armv8a_ce.c:100:7: error: incompatible types when assigning to type 'uint32x4_t' from type 'int' abcd = vsha1cq_u32( abcd, e, wk0 ); /* 0 */ ^ sha1_armv8a_ce.c:102:2: warning: implicit declaration of function 'vsha1su0q_u32' [-Wimplicit-function-declaration] w0 = vsha1su0q_u32( w0, w1, w2 ); ^ sha1_armv8a_ce.c:102:5: error: incompatible types when assigning to type 'uint32x4_t' from type 'int' w0 = vsha1su0q_u32( w0, w1, w2 ); ^ sha1_armv8a_ce.c:106:7: error: incompatible types when assigning to type 'uint32x4_t' from type 'int' abcd = vsha1cq_u32( abcd, e1, wk1 ); /* 1 */ ^ sha1_armv8a_ce.c:108:2: warning: implicit declaration of function 'vsha1su1q_u32' [-Wimplicit-function-declaration] w0 = vsha1su1q_u32( w0, w3 ); ^ sha1_armv8a_ce.c:108:5: error: incompatible types when assigning to type 'uint32x4_t' from type 'int' w0 = vsha1su1q_u32( w0, w3 ); ^ sha1_armv8a_ce.c:109:5: error: incompatible types when assigning to type 'uint32x4_t' from type 'int' w1 = vsha1su0q_u32( w1, w2, w3 ); ^ ... ********** $ grep -IR vaeseq_u8 /usr/include /usr/include/clang/3.5.0/include/arm_neon.h:__ai uint8x16_t vaeseq_u8(uint8x16_t __p0, uint8x16_t __p1) { /usr/include/clang/3.5.0/include/arm_neon.h:__ai uint8x16_t vaeseq_u8(uint8x16_t __p0, uint8x16_t __p1) { /usr/include/clang/3.5/include/arm_neon.h:__ai uint8x16_t vaeseq_u8(uint8x16_t __p0, uint8x16_t __p1) { /usr/include/clang/3.5/include/arm_neon.h:__ai uint8x16_t vaeseq_u8(uint8x16_t __p0, uint8x16_t __p1) { $

8 years, 4 months

2
1
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[ANNOUNCE] Linaro GCC 6 2017.01 snapshot

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2017.01 snapshot of the Linaro GCC 6 source package. This monthly snapshot[1] is based on FSF GCC 6.3+svn244220 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the 2017.02 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.01/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 6.3+svn244220 * Backport of [Bugfix] Fix PR77673: bswap loads passed end of object * Backport of [ARMv8-M] [AArch32] 1/7 Move memory model declarations in memmodel.h * Backport of [ARMv8-M] [AArch32] 2/7 Adapt atomic and exclusive load and store to ARMv8-M Baseline * Backport of [ARMv8-M] [AArch32] 3/7 Refactor atomic compare_and_swap to make it fit for ARMv8-M Baseline * Backport of [ARMv8-M] [AArch32] 4/7 Adapt atomic compare and swap to ARMv8-M Baseline * Backport of [ARMv8-M] [AArch32] 5/7 Adapt other atomic operations to ARMv8-M Baseline * Backport of [ARMv8-M] [AArch32] 7/7 Enable ARMv8-M atomic and synchronization support for ARMv8-M Baseline * Backport of [ARMv8-M] [AArch32] Added support for ARMV8-M Security Extension cmse_nonsecure_caller intrinsic * Backport of [ARMv8-M] [AArch32] Add multilib mapping for Cortex-M23 & Cortex-M33 * Backport of [ARMv8-M] [AArch32] Add support for ARM Cortex-M23 processor * Backport of [ARMv8-M] [AArch32] Add support for ARM Cortex-M33 processor * Backport of [ARMv8-M] [AArch32] Add support for ARMv8-M's Secure Extensions flag and intrinsics * Backport of [ARMv8-M] [AArch32] ARMv8-M Security Extension's cmse_nonsecure_call: use __gnu_cmse_nonsecure_call * Backport of [ARMv8-M] [AArch32] ARMv8-M Security Extension's cmse_nonsecure_entry: __acle_se label and bxns return * Backport of [ARMv8-M] [AArch32] ARMv8-M Security Extension's cmse_nonsecure_entry: clear registers * Backport of [ARMv8-M] [AArch32] Fix various arm failures with config-list.mk * Backport of [ARMv8-M] [AArch32] Force soft float in ARMv6-M and ARMv8-M Baseline options * Backport of [ARMv8-M] [AArch32] Handling ARMv8-M Security Extension's cmse_nonsecure_call attribute * Backport of [ARMv8-M] [AArch32] Handling ARMv8-M Security Extension's cmse_nonsecure_entry attribute * Backport of [ARMv8-M] [AArch32] Make arm_feature_set agree with type of FL_* macros * Backport of [ARMv8-M] [AArch32] Optional -mthumb for Thumb only targets * Backport of [AArch64] 1/3 Add missing Poly64_t intrinsics to GCC * Backport of [AArch64] 2/3 Add missing Poly64_t intrinsics to GCC * Backport of [AArch64] 3/3 Add tests for missing Poly64_t intrinsics to GCC * Backport of [AArch64] Add more Poly64_t intrinsics to GCC * Backport of [AArch64] more poly64 intrinsics * Backport of [Testsuite] [AArch64] Fix failing poly64 tests on ARM * Backport of [Testsuite] [AArch64] Lower iterator count on gcc.dg/atomic/c11-atomic-exec-5.c for AARCH64 * Backport of [Cleanup] Improve comment for struct symbolic_number in bswap pass 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, 4 months

1
0
0 0

[ACTIVITY] Week 01

by Yvan Roux

o 1 day off (2/10) o Teaching activity (4/10) == Progress == o Linaro GCC/Validation (2/10) * 5.4-2017.01-rc1 release notes and publication * Some infra bugfixes and reviews o Misc (1/10) * Various meetings and discussions. * Plan for 2017 == Plan == o GCC 6 branch merge and snapshot

8 years, 4 months

1
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[ACTIVITY] 2-6 January 2017

by Christophe Lyon

== Progress == * Validation - general improvement (jobs, abe cleanup and fixes) - submitted several patches for abe bug reports * GCC - pinged patches, still waiting for feedback * misc (conf-calls, meetings, emails, ....) - bugzilla followup - internal updates/problems after general IT maintenance - reported binutils trunk regressions == Next == * ABE & Jenkins jobs patches reviews and bug fixes * GCC: - bug fixing - Linaro bugzilla cleanup

8 years, 4 months

1
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[ACTIVITY] 3 to 6 January 2017

by kugan

== Activity == - [PR64946] abs vectorization fails for char/short types * Trying to tackle this with ABSU_EXPR * Experimented with implemented in FE vs in gimplification * Hope to get a working prototype this week - Misc * gcc-patches/bug list * Plan for 2017 == Plans for next week == - PR64946 - Catch up on pending patches

8 years, 4 months

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[ACTIVITY] 02 - 6 January 2016

by Omair Javaid

=== This Week === Back from month long holiday had a surgery during this period. Add Pine64 as tester to LLDB buildbot [TCWG-1011] [3/10] -- Configure Pine64 with Ubuntu 16.04 image -- Configure network on Pine64 to be used with LLDB buildbot -- Configure Pine64 for AArch32 mode execution -- Configure LLDB buildbot to include Pine64 as tester in both AArch32 and AArch64 modes. -- Run buildbot with Pine64 and monitor stability Monitor LLDB buildbot for minimum down time. [TCWG-712] -- Return from break reset buildbot and testers. Investigate LLDB testsuite failures on Pine64 target (AArch32 and AArch64 modes) [TCWG-1012] [2/10] -- Some tests pass when run individually. -- Some tests fail only when run in testsuite, similar steps pass when run using LLDB commandline. LLDB Arm/AArch64 Investigate and fix testsuite crashes (Pine64 Crashes) [TCWG-792] [1/10] -- LLDB crashing unexpectedly on Pine64 as well. -- Initial investigation suggests test run fine individually and in single thread mode. Meetings and other Miscellaneous Activities [1/10] -- Browse through email backlog. -- Prepared a future ToDo list. BUD17 Travel - Schengen visa application for Budapest, Hungary. [3/10] -- Information gathering and correspondance. -- Form filling and preparation supporting documentation. -- Application submission. -- Interview date is on 10th Jan 2017. === Next Week === Investigate LLDB testsuite failures on Pine64 target (AArch32 and AArch64 modes) [TCWG-1012] -- Continue to investigate, possible fix trivial issues and mark rest as xfail with appropriate bug reports. LLDB Arm/AArch64 Investigate and fix testsuite crashes (Pine64 Crashes) [TCWG-792] -- Find a reliable reason to the issue as this hampers our buildbot work. BUD17 Travel - Schengen visa application for Budapest, Hungary. -- Budapest visa interview travelling to Islamabad 9 - 10 Jan 2017.

8 years, 4 months

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[ACTIVITY] 2 Jan - 6th Jan 2017

by Prathamesh Kulkarni

== This Week == * TCWG-1005 (propagate malloc attribute) (7/10) - Created prototype patch for propagating malloc attribute in ipa-pure-const * TCWG-1010 (bitwise-dce) (2/10) - Looking into LLVM's implementation of demanded-bits analysis * Misc (1/10) - Meetings == Next Week == - TCWG-1005, TCWG-1010

8 years, 4 months

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[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 5.4-2017.01-rc1

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 5.4-2017.01-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: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2017.01-rc1/ http://snapshots.linaro.org/components/toolchain/binaries/5.4-2017.01-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/ 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-rc1 Linaro glibc 2.21 (linaro/2.21) Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) Linaro binutils 2.25 (linaro_binutils-2_25-branch) FSF GDB 7.12 (gdb-7.12-branch) Linaro toolchain package git branches are hosted at: http://git.linaro.org/?a=project_list&s=toolchain%2F&btnS=Search NEWS for Linaro GCC 5.4-2017.01-rc1 ==================================== * 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 * 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 | Linaro Toolchain Engineering Manager ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net

8 years, 4 months

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[ACTIVITY] 3rd to 6th January 2017

by Peter Smith

== Activity == TCWG-919 Thunks to undefined symbols Now committed upstream TCWG-614 Long branch thunks Sent RFC to llvm-dev Have a good idea about how to proceed. First step is to rewrite existing implementation using synthetic sections. Currently thinking about the best way to do this. Wrote first draft of Fosdem 2017 presentation Booked travel for Fosdem Registered for Linaro Connect == Plans for next week == Linaro TCWG-614 Long branch thunks Aim to get a patch out for review for thunks as synthetic sections

8 years, 4 months

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[ACTIVITY] 19 - 23 December 2016

by Diana Picus

== Progress == * Out of office [2/10] * [ARM GlobalISel] Use CC support for lowering args/return [TCWG-946] [1/10] - Brushed up and committed upstream * [ARM] Use AddDefaultPred everywhere [TCWG-987] [3/10] - Patches in upstream review * Misc [4/10] - Mailing lists, meetings, 2017 objectives - Code reviews - FOSDEM slides - Investigated buildbot failures and reverted some patches (and ran a precommit on the next version) == Plan == * Vacation until January 9th, 2017

8 years, 4 months

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[ACTIVITY] Dec 12 - 16

by Yao Qi

~ Progress ~ * Fix foreign frame problem in C++ exception unwinding. PR 20939. [2/10] Being discussed. We agreed on the approach fixing the bug. Need a patch. Find other issues during the investigation, and fixed them. PR 20953, PR 20954, and PR 20955 are fixed. * GDB exception handling is broken on i686-w64-mingw32. PR 20977. [3/10] In short, we can't use longjmp in SJLJ exception handling. Need post an RFC. * Upstream patches review. [5/10] ** SVE GDB patches review. Carefully read the patches line by line for the first time. Find some issues on target descriptions, and post my comments upstreams. Hack GDBserver to get SVE on normal juno board. Need more time to think about how to move on. ** Review sparc target descriptions. ** 7.12.1 release discussion. ~ Plan ~ * PR 20939, PR 20977. * On Holiday from Wed. -- Yao Qi

8 years, 4 months

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[ACTIVITY] Week 50

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * Completed backports * Merged FSF branches (5 and 6) * Released 2016.12 source snapshots (5 and 6) * Closed bugzillas #1925, #2575 and #1963 o Misc (3/10) * Various meetings and discussions. == Plan == o Finish on-going tasks before holiday (Tuesday evening).

8 years, 4 months

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[ACTIVITY] 12 - 16 December 2016

by Peter Smith

Progress: TCWG-985 PIE on ARM broken - Now fixed TCWG-911 Eglibc requires a .ARM.attributes section for dlopen - Worked around this with a simple hack to retain the first build attribute section seen. This should suffice for the majority of use-cases on a host platform using the default compiler. More work is needed later. Now upstreamed. TCWG-919 Thunks to undefined symbols - In upstream review, as expected got some push back, I had hoped to have resolved this on Thursday and committed today, but no response last night. PR31332 X86 pic plt sequences broken - Worked out a fix, but haven't sent upstream due to needing to spend quite a bit of time writing tests. Other: About 3/4 way of writing up AArch64 Ifunc for possible inclusion in some public facing documentation. Got a new blank machine from IT with permission to install linux myself. Have now built myself a 16.04 machine and got my environment set up. Planned absences: - on holiday for two weeks, back on Tuesday 3rd December Next year: - Top priority is long range thunks in lld, followed by an ARM lld build bot.

8 years, 4 months

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[ACTIVITY] 12 - 16 December 2016

by Diana Picus

== Progress == * [ARM GlobalISel] Add support for integers < 32 bits wide [TCWG-980] [4/10] - A number of patches in upstream review * [ARM] Refactor AddrMode3 [TCWG-989] [1/10] - Did some preliminary investigations / tinkering for removing a hack in the representation of LDRH * Rewrite llvm-projs in Python [TCWG-833] [2/10] - More refactoring etc - It is finally done, yay * Misc [3/10] - Address review comments on outstanding patches (committed TCWG-925, still waiting for TCWG-946) - AArch64 3.9.1 release [TCWG-886] - Meetings, mailing lists, code reviews == Plan == * [ARM] Refactor AddrMode3 [TCWG-989] * FOSDEM slides * Vacation between December 24th and January 9th.

8 years, 4 months

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[ANNOUNCE] Linaro GCC 5 and 6 2016.12 snapshots

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2016.12 snapshot of both Linaro GCC 5 and Linaro GCC 6 source packages. Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.2+svn243594 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the 2017.02 stable[2] quarterly release. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.12/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 6.2+svn243594 * Linaro BZ #2575: backport from trunk r239561, r242555. * Backport of [Bugfix] [AArch32] PR target/78041 * Backport of [Bugfix] Fix test names for trad.exp tests PR testsuite/78136 * Backport of [Bugfix] PR middle-end/78201 * Backport of [Bugfix] PR tree-optimization/71636 * Backport of [AArch32] Implementing vmaxnmQ_ST and vminnmQ_ST intrinsincs * Backport of [AArch64] aarch64-*-freebsd* support for gcc * Backport of [AArch64] Add a SHA1H pattern * Backport of [AArch64] Align FP callee-saves * Backport of [AArch64] Improve stack adjustment * Backport of [AArch64] Improve stack adjustment: add testcase * Backport of [Cleanup] Fix typo in name * Backport of [Cleanup] Remove all uses of TARGET_FLT_EVAL_METHOD_NON_DEFAULT and poison it * Backport of [Cleanup] Remove redundant TARGET_VFP * Backport of [Misc] Optimize strchr to strlen (1/2) * Backport of [Misc] Optimize strchr to strlen (2/2) * Backport of [Testsuite] [AArch32] Fix failing vminnm/vmaxnm test on ARM * Backport of [Testsuite] [AArch32] FP16 ARM Alternative format variants of AAPCS tests * Backport of [Testsuite] Fix traditional cpp test failure * Backport of [Testsuite] Report DejaGnu ERROR messages in compare_tests * Backport of [Testsuite] Report DejaGnu ERROR messages in dg-extract-results * Backport of [Cleanup] [AArch32] Remove redundant model field from FPU descriptions * Backport of [Cleanup] [AArch32] Use VAR_P * Backport of [Cleanup] [AArch64] aarch64-c.o should depend on TARGET_H * Backport of [Cleanup] [AArch64] Add a comment before each set of cores * Backport of [Cleanup] [AArch64] Add function comments to some prologue/epilogue helpers * Backport of [Cleanup] [AArch64] Cleanup add expander Linaro GCC 5 monthly snapshot[1] is based on FSF GCC 5.4+svn243604 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/5.4-2016.12/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 5.4+svn243604 * Linaro BZ #2575: backport from trunk r232812. 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

8 years, 5 months

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[ACTIVITY] 5-9 December 2016

by Peter Smith

Progress: TCWG-829 Ifunc support - Refactored implementation using synthetic sections upstreamed. Found out that x86 ifunc was broken and probably hadn't ever worked so I fixed that while I was there. PR31332 x86 pic plt sequences broken - Found out that x86 pic and pie is broken in lld, the implementation assumes that .got is immediately followed by .got.plt with no gap. As lld makes no such guarantees it is easy to break with a trivial example. Raised PR31332 after investigating the root cause. Spent quite a bit of time on this, even though it is x86 specific, I wanted to make sure I hadn't broken it. Fosdem-2017 - Submitted a llvm-devroom talk on lld to Fosdem (post deadline, but probably still up for consideration) Plans for this week: TCWG-985 PIE on ARM broken - I have a simple fix that should be simple to upstream TCWG-919 Thunks to undefined symbols - I have a downstream patch, but there is risk I'll be asked to refactor TCWG-911 Eglibc requires a .ARM.attributes section for dlopen - There is a trivial hack to make this work; just use the first ARM attributes section and throw away the rest. A proper solution to support ARM attributes merging will take some time. PR31332 x86 pic plt sequences broken - I think I can fix this fairly cheaply which while not directly relevant to ARM, it does give me another easily accessible target to test on my desk top and has some community benefits. Ifuncs - LLD doesn't support taking the address of ifuncs for any architecture. I don't think that this is common practice, but it is a latent problem that it might be good to fix now when ifunc is in my head. Planned holidays: 19th December till end of the year, back on Tuesday 3rd January

8 years, 5 months

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[ACTIVITY] Week 49

by Yvan Roux

== Progress == o Linaro GCC/Validation (7/10) * [TCWG-936] Regression detection: - Added Make-release trigger. * [Bug #1925]: Investigate and identified missing backport - backported fix into Linaro gcc-5-branch integration branch. * [TCWG-955] Re-association: - Continue learning and experiements * Backports for 2016.12 o Misc (3/10) * Various meetings and discussions. == Plan == o Complete backports and branch merge o Continue re-association learning

8 years, 5 months

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