- linaro-toolchain - lists.linaro.org

[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, 10 months

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[ACTIVITY] 13 - 17 February 2017

by Diana Picus

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

8 years, 10 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, 10 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, 10 months

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[ANNOUNCE] Linaro Binary Toolchain Release GCC 5.4-2017.01

by Ryan Arnold

The Linaro Binary Toolchain ============================ The Linaro GCC 5.4-2017.01 Release is now available. Notice: All Linaro GCC 5 series toolchain users should migrate to the latest version of the Linaro GCC 5 toolchain in order to mitigate potential security exposure to CVE-2015-7547. See the NEWS section below for details. Download release packages from: (sources) http://releases.linaro.org/components/toolchain/gcc-linaro/5.4-2017.01/ (binaries) http://releases.linaro.org/components/toolchain/binaries/5.4-2017.01/ Previous snapshots and release-candidates are at: http://snapshots.linaro.org/components/toolchain/binaries/ Previous releases are at: http://releases.linaro.org/components/toolchain/binaries/ A description of what each ABI or triplet is can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… Host Requirements ================== Linaro officially supports the current and previous Ubuntu LTS releases (as of the time of this release). This does not mean that the toolchain will not work on other/older Linux distributions. See the following for the life-time of Ubuntu LTS releases. https://wiki.ubuntu.com/Releases The host system upon which the cross-compiler will run requires a minimum of glibc 2.14, because of API changes to glibc's memcpy API. https://bugs.linaro.org/show_bug.cgi?id=1869 Package Versions ================= Linaro GCC 5.4-2017.01 http://releases.linaro.org/components/toolchain/gcc-linaro/5.4-2017.01/ Linaro glibc 2.21 (linaro/2.21) https://lists.gnu.org/archive/html/info-gnu/2015-02/msg00001.html Linaro newlib 2.1.0-2014.09 (linaro_newlib-branch) https://sourceware.org/ml/newlib/2013/msg01128.html Linaro binutils 2.25 (linaro_binutils-2_25-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 7.12 (gdb-7.12-branch) https://lists.gnu.org/archive/html/info-gnu/2016-10/msg00007.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 5 (as of Linaro GCC 5.4-2017.01) ============================================== * The soft-float targeted toolchains have now been configured to generate code using -mfloat-abi=soft. This makes arm-linux-gnueabi and armeb-linux-gnueabi toolchains use the “soft” FP ABI instead of “softfp”. Historically, TCWG’s toolchains provided both “soft” and “softfp” multilibs, but when switching from crosstool-ng to cbuildv2/abe (which support a single multilib) “softfp” multilib was choosen. Using “-mfloat-abi=soft” is a better choice for a gnueabi toolchain, since it doesn’t require cores to have a floating-point unit. This change should not break compatibility for toolchain users since the ABI will stay the same. The compiler and glibc libraries will not refernce FP instructions. * Include GCC fix for Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * Include GCC fix for Linaro bugzilla #1925: [regression] FAIL: libgomp.fortran/retval1.f90 -O1 execution test https://bugs.linaro.org/show_bug.cgi?id=1925 * Include GCC fix for Linaro bugzilla #2185: aarch64-linux-gnu-g++ internal compiler error: in curr_insn_transform https://bugs.linaro.org/show_bug.cgi?id=2185 * Backported glibc patch to simplify static malloc interposition [BZ #20432] to correct user identified issue. commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer Date: Fri Aug 26 22:40:27 2016 +0200 malloc: Simplify static malloc interposition [BZ #20432] * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 1.1G to 580M for aarch64-linux-gnu target with the gcc-5-branch. * Removed .la files from binary toolchain archive as these files break autotools builds. https://bugs.linaro.org/show_bug.cgi?id=2764 * The mingw toolchains are now archived using the rsync -L option in order to avoid problems with Windows extractors and symbolic links. https://review.linaro.org/#/c/16415/ This resolves the following user bugs: https://bugs.linaro.org/show_bug.cgi?id=2684 https://bugs.linaro.org/show_bug.cgi?id=2192 https://bugs.linaro.org/show_bug.cgi?id=2762 * Copy the libwinpthread DLL into the bin directories so it gets into the tmp directory before tar is run. https://review.linaro.org/#/c/13723/ * Increment binutils release date to 2016_02 to reflect the most recent commit: commit ef90a4718f535cbe6345b4e7168baea7b1972abf Author: Matthew Wahab <matthew.wahab(a)arm.com> Date: Tue Jan 12 16:35:30 2016 +0000 [ARM] Support ARMv8.2 RAS extension. * Baremetal sysroot names now contain 'newlib' rather than 'glibc'. * Manifests now contain relative paths rather than absolute paths. * Now generating proper manifest files. * Fixed pi requeue support in glibc 2.21 while allowing the existing 2.21 minimum kernel default setting. This was checked into the linaro/2.21/master branch. commit a68cafa11c500d8a49a3014c43c5152859d037ae Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) commit 6e5cb616b5b442ce8b2664ad673c0acf42a490ac Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST commit 9ac61c0047295696cbcdbc26bdc174c7bd25a3c8 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Backported support into GCC for Cortex-A32, Cortex-A35, and Cortex-R8. * Applied fix for CVE-2015-7547 - A stack-based buffer overflow in glibc's getaddrinfo() was corrected in glibc 2.23 and backported into glibc 2.21. https://sourceware.org/ml/libc-alpha/2016-02/msg00416.html * ARMv8.1 Instruction Support - ARMv8.1 instructions support was checked into GCC and binutils. It has been backported into Linaro GCC 5.3 and Linaro binutils 2.25. * Backported -Bsymbolic-functions into Linaro binutils 2.25. * Performance related backports from Linaro GCC 5.2-2015.11, Linaro GCC 5.2-2015.12, and Linaro GCC 5.3-2016.01-1, Linaro GCC 5.3-2016.02, Linaro GCC 5.3-2016.03, Linaro GCC 5.3-2016.04, Linaro GCC 5.4-2016.06, Linaro GCC 5.4-2016.10 and Linaro GCC 5.4-2016.12 have been included. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.2-2015.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2015.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.01-1/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.02 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.03 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.3-2016.04 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.06 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.10 http://snapshots.linaro.org/components/toolchain/gcc-linaro/5.4-2016.12 Contact Linaro =============== File bugs at http://bugs.linaro.org For Linaro member support see http://support.linaro.org For Linaro community support email linaro-toolchain(a)lists.linaro.org -- Ryan S. Arnold | Director - Linaro Core Technology and Tools ryan.arnold(a)linaro.org | ryanarn on #linaro-tcwg @ freenode.irc.net T: +1-612-424-1861

8 years, 10 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, 10 months

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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, 10 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, 10 months

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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, 10 months

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[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, 10 months

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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, 10 months

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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, 10 months

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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, 10 months

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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, 10 months

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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, 10 months

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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, 10 months

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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, 10 months

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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, 10 months

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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, 10 months

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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, 10 months

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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, 10 months

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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, 10 months

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[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, 10 months

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[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, 10 months

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[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, 10 months

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