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help, here is a armV8 32bit question for linaro 4.8: the code I given below adopt sembedding ARMV8 assembly , but the compile result with Linaro GCC 4.8 aarch32 is not correct

by Panshilin (Peter)

Hi all concerned: this test code I given below: AARCH32 [https://email-cn04.huawei.com/owa/14.3.158.1/themes/base/pgrs-sm.gif] Test function[X][X] { volatile unsigned int val0 = 0; volatile unsigned int val1 = 0; asm volatile(“mrrc p15, 1, %0, %1, c15” : “=r”(val0), “=r”(val1)) val0 &= ~(1<<6); val1 &= ~(1<<6); asm volatile(“mcrr p15, 1, %0, %1, c15” : “=r”(val0), “=r”(val1)); } After compiling, the result is: mrrc 15, 1, r2, r3, cr15 str r2, [fp, #-28] str r3, [fp, #-24] ldr r3, [fp, #-28] bic r3, r3, #64; str r3, [fp, #-28] ldr r3, [fp, #-24] bic r3, r3, #64 str r3, [fp, #-24] mcrr 15, 1, r2, r3, cr15 obviously , it is not what I expect. I have val0 an vl1 two vars, but the compiling result is only one val takes effect. especia I have to mention is AARCH32. thanks. Peter

10 years, 11 months

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FW: Request received: accessing toolchain source releases - Member user

by Scott Douglass

Hi, Do you happen to know the answer to the git/svn questions below? Thanks. -----Original Message----- From: LDTS [mailto:support@linaro.zendesk.com] Sent: 25 July 2014 08:43 To: Scott Douglass Subject: Request received: accessing toolchain source releases - Member user Thank you for contacting Linaro. Your request (#927 <https://support.linaro.org/requests/927> ) has been received and is being reviewed by Linaro Developer Technical Support (LDTS). One of our Support agents will be in contact with you as soon as possible. If you would like our agent to contact you via phone, please include your phone number in the comments. To view your ticket and/or add additional comments, reply to this email or click the link below: http://support.linaro.org/requests/927 Scott Douglass Jul 25 16:43 Hi, I’ve been looking at https://wiki.linaro.org/WorkingGroups/ToolChain (https://wiki.linaro.org/WorkingGroups/ToolChain) and I see the Tree links that give me the git repository and commit id for the current releases of the toolchains (for example, 4.9-2014.06-1 => https://git.linaro.org/toolchain/gcc.git/commit/56d9fd9281e8cef3ea35b7d9ad8… (https://git.linaro.org/toolchain/gcc.git/commit/56d9fd9281e8cef3ea35b7d9ad8… My first question is: is there a straight-forward way (for example, a tag) to find the commit ids of older (4.9) releases? Or is searching the commit messages the best way? Also, is there svn access as well or just git access? (Git access is enough, but svn access would be slightly easier for me.) Also, I has a couple comments on that wiki page: It says “Pre-built versions that run on generic Linux or Windows are available at http://launchpad.net/linaro-toolchain-binaries.”, but it looks like the that Launchpad project is no longer being maintained (no 4.9 and no recent 4.8). Perhaps the wiki page should be updated (and the Launchpad description updated). The wiki page also links to https://wiki.linaro.org/Cycles/Next/Release/Status (https://wiki.linaro.org/Cycles/Next/Release/Status) which seems even more out-of-date than the Launchpad binaries; perhaps that link should be updated/removed, too. Thanks. -- 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. ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2557590 ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2548782 ##- Please type your reply above this line -## Message-Id:5EV1YF0A_53d20a9134254_35e73f955b4b3338321343_sprut -- 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. ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2557590 ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2548782

10 years, 11 months

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[ACTIVITY] 16 - 20 June

by Charles Baylis

* Linaro bugzilla #24 - [6/10] * investigating cause of ICE in Linaro 4.9 * PR61411 [1/10] * Committed patches for division (TCWG-???) and Neon address mode (TCWG-430) [1/10] * Admin [1/10] * Holiday [1/10]

10 years, 11 months

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VFP in BE mode - undefined instruction vstmia

by Joel (Xi Zhou) Zhou

Hi all, I'm working on booting Linaro LSK 3.10.40 kernel in be8 mode on our Cortex-A9 system. There is an issue related to VFP instruction. It complain "vstmia" is an undefined instruction. The VFP is supported in CPU and CONFIG_VFP and CONFIG_VFPv3 are enabled in kernel config. Are there any patch need to be done for VFP in BE mode? The booting log show as following: call sys_access(/init) Freeing unused kernel memory: 2832K (c0600000 - c08c4000) kernel_init: try to execute '/init' (ramdisk_execute_command) en->run_init_process(/init) init (1): undefined instruction: pc=0000aab8 Code: f00f dff8 2a20 1268 (acec) 108b Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004 The disassembly code show the undefined instruction is "vstmia". armeb-linux-gnueabihf-objdump -D busybox_unstripped > busy.asm 0000aa90 <__sigsetjmp>: ... aab6: 6812 ldr r2, [r2, #0] aab8: ecac 8b10 vstmia ip!, {d8-d15} aabc: f412 7f00 tst.w r2, #512 ; 0x200 The rootfs is busybox 1.22.1 compiled by Linaro BE hard floating toolchain. https://releases.linaro.org/14.04/components/toolchain/binaries/gcc-linaro-… Thanks, Joel

10 years, 11 months

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[ACTIVITY] 14 - 18 July 2014

by Omair Javaid

== Progress == * On Holiday from 14th to 17th July 2014. * Travel to Cambridge to attend TCWG Sprint and GNU Tools Cauldron on Friday 18th July. == Plan == * Attend GNU Tools Cauldron 18th to 20th July. * Attend TCWG Sprint 21st to 24th July. * Friday 18th July return back after attending TCWG Sprint and GNU Tools Cauldron in UK.

10 years, 11 months

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[ACTIVITY] 7 - 11 July 2014

by Omair Javaid

== Progress == * Testing and Analysis of testsuite failures in arm-linux-gdb [TCWG-509] [6/10] -- Run ARM GDB testsuite on local chromebook, remote chrombook and pandaboards. -- Investigation of failures on arm. * AArch64 GDB handling of functions with empty prologue. [TCWG-504] [1/10] -- Short list aarch64 prologue skipping requirements. * Browsing gdb related upstream discussions and reviewing aarch64 regset rework stuff. [1/10] * Preparation for travel to UK, obtaining medical NOC document for international travel. [2/10] == Plan == * On Holiday from 14th to 17th July 2014. * Travel to Cambridge to attend Sprint and Cauldron.

10 years, 11 months

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[ACTIVITY] July 14th - 18th

by Bernie Ogden

=Progress= cbuild2 benchmarking - TCWG-360 [7/10] * Much fighting with benchmarking branch on a panda * Ported eembc benchmarking over to my way of doing things * A bit of cleanup around the 'reduce noise by shutting down services' stuff * Slew my ailing Ubuntu VM, started bringing up a beagle as a 2nd sacrificial target lowlevellock.h - TCWG-435 [1/10] * Roland patch review/thinking about how to test a corner case Meetings/mail/etc [2/10] =Plan= Cauldron/TCWG sprint Hopefully some cbuild2 benchmarking progress

10 years, 11 months

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[ACTIVITY] 14 - 18 July 2014

by Will Newton

== Progress == * Annual leave Monday to Wednesday (6/10) * Travel to Cauldron/Sprint (2/10) * Catching up on email, pushing patches, bugs etc. (2/10) == Issues == * None == Plan == * GNU Tools Cauldron * Toolchain Sprint -- Will Newton Toolchain Working Group, Linaro

10 years, 11 months

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[ANNOUNCE] Linaro GCC 4.9 2014.07 released

by Yvan Roux

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2014.07 stable release of the Linaro GCC 4.9 source package. Linaro GCC 4.9 2014.07 is the fourth Linaro GCC source package release in the 4.9 series. It is based on FSF GCC 4.9.1+svn212419 and includes performance improvements and bug fixes. With the imminent release of ARMv8 hardware and the recent release of the GCC 4.9 compiler the Linaro TCWG will be focusing on stabilization and performance of the compiler as the FSF GCC compiler approaches version 4.9.1. The Linaro TCWG will provide monthly stable[1] source package releases until FSF GCC 4.9.1 is released. At that point Linaro GCC 4.9 will merge in FSF GCC 4.9.1 and, release Linaro GCC 4.9.1, and then return to a schedule of stable quarterly releases and monthly engineering[2] releases. Interesting changes in this GCC source package release include: * Updates to GCC 4.9.1-pre+svn212419 * Backport of [AArch32] Wrap long literals in HOST_WIDE_INT_C in aarch-common.c * Backport of [AArch32] Rewrite TLC Intrinsics. * Backport of [AArch32] Remove vzip, vuzp, vtrn builtins and cleanup * Backport of [AArch32] Use enum name instead of integer value for PARAM_SCHED_PRESSURE_ALGORITHM. * Backport of [AArch32] Vectorise bswap* * Backport of [AArch32] Fix PR/61331 * Backport of [AArch32] Fix PR target/61154 * Backport of [AArch32] Use mov_imm type for movw operations consistently * Backport of [AArch32] Remove XFmode from ARM backend. * Backport of [AArch64] Rewrite REV Intrinsics. * Backport of [AArch64] Implement HARD_REGNO_CALLER_SAVE_MODE. * Backport of [AArch64] Support tail indirect function call. * Backport of [AArch64] Fix stack protector for ILP32 * Backport of [AArch64] ILP32 dynamic linker * Backport of [AArch64] Correct signedness of builtins, remove casts from arm_neon.h * Backport of [AArch64] clarify stack layout diagram * Backport of [AArch64] Implement movmem for the benefit of inline memcpy * Backport of [AArch64] Fix REG_CFA_RESTORE mode. * Backport of [AArch64] Fix layout of frame layout code. * Backport of [AArch64] Fix some reg-to-reg move scheduler types. * Backport of [AArch64] Implement CRC32 ACLE intrinsics + testsuite. * Backport of [AArch64] Implement ADD in vector registers for 32-bit scalar values. * Backport of [AArch32/AArch64] TARGET_ATOMIC_ASSIGN_EXPAND_FENV AArch64 * Backport of [AArch32/AArch64] Use signed chars in gcc.dg/pr60114.c. * Backport of [AArch32/AArch64] Rewrite UZP Intrinsics. * Backport of [AArch32/AArch64] Rewrite TRN Intrinsics. * Backport of [AArch32/AArch64] Rewrite EXT Intrinsics. * Backport of [genattrtab] Fix memory corruption, allocate enough memory for all bypassed reservations * Backport of Fix PR c/60114 Feedback and Support Subscribe to the important Linaro mailing lists and join our IRC channels to stay on top of Linaro development. ** Linaro Toolchain Development "mailing list": http://lists.linaro.org/mailman/listinfo/linaro-toolchain ** Linaro Toolchain IRC channel on irc.freenode.net at @#linaro-tcwg@ * Bug reports should be filed in Launchpad against "Linaro GCC project": http://bugs.launchpad.net/gcc-linaro/+filebug. * Questions? "ask Linaro": http://ask.linaro.org/. * Interested in commercial support? inquire at "Linaro support":mailto: support(a)linaro.org [1] Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed. [2] Engineering source package releases are defined as releases where the compiler is only put through unit-testing and full validation is not performed.

10 years, 11 months

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[ACTIVITY] 7 - 11 July 2014

by Will Newton

== Progress == * More work on launchpad bugs (3/10) - Moved gdb bugs over to bugzilla and closed down Launchpad tracker - Found secret location of Linaro eglibc bugs in Launchpad! - Triaged, moved, closed as many bugs as possible, some still remain * Respin of binutils 2.24 2014.07 release (1/10) * Get binutils ARM testsuite all passing on EABI, mostly on OABI (2/10) * glibc patch review and build warning fixes (2/10, CARD-341) * Annual leave on Friday (2/10) == Issues == * None == Plan == * 4 days in Berlin * Travel to Cauldron -- Will Newton Toolchain Working Group, Linaro

10 years, 11 months

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linaro prepackaged binary for aarch64 static libfdt.a?

by Claudio Fontana

Hello Will and list, do you have a prepackaged static libfdt.a for aarch64? I think it's part of some of the released images you provide, but maybe you have it also available as a single package? Thank you, Claudio

10 years, 11 months

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[ACTIVITY] July 7-13

by Maxim Kuvyrkov

== Week of July 7th == - Continued working on toolchain testing improvements (CARD-1378, 6/10) -- Further Jenkins fixes and improvements -- Various bits of build farm administration -- Investigated feasibility of [really] remote cross-testing -- yes, it is feasible! - STREAM performance regression (TCWG-388, 2/10) -- Resumed patch submission (now that testing is working much better) - Various meetings and discussions (2/10) -- Maxim Kuvyrkov www.linaro.org

10 years, 11 months

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[ACTIVITY] June 30-6

by Maxim Kuvyrkov

== Week of June 30th == - Continued working on toolchain testing improvements (CARD-1378, 6/10) -- Troubleshooted Jenkins jobs -- Various cbuild2 improvements - Migrated master VM of TCWG dev environment to AWS (2/10) -- It is now at tcwg-dev-env-master.linaro.org - Various meetings and discussions (2/10) -- Attempted to test QEMU's aarch32 crypto support -- Organized travel for GCC GSoC student to GNU Tools Cauldron. Thanks Linaro for providing sponsorship for this! -- Maxim Kuvyrkov www.linaro.org

10 years, 11 months

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[ACTIVITY] July 7th - 11th

by Bernie Ogden

=Progress= memcpy regression on A9 - TCWG-390 [6/10] * Not down to the branch predictor after all * Can be fixed for A9 with explicit pld, but this isn't free cbuild2 benchmarking - TCWG-360 [1/10] * Dug out my branch, merged in trunk, refreshed memory Meetings/mail/etc [3/10] * Including a little patch review for Roland's lowlevellock.h (TCWG-435) =Plan= Close TCWG-390 as wontfix Lots more cbuild2 benchmark automation Keep up with lowlevellock.h

10 years, 11 months

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[ACTIVITY] 07-11 JULY 2014

by Venkataramanan Kumar

== Progress == * Recovered from flu on leave 7th and 8th July (4/10) =LTO bootstrap -tcwg180 (2/10)= Git bisect experiments shows bootstrap compare errors apprearing and disappearing at trunk at different revisons. Alteast 3 revisons LTO bootstrap passes r210740 2488876068f541a341472c3aeedadccc255f0696 PASS r210854 271fe9cf111f6b581451bbfb4d346757877896cd PASS r210973 487fea840105dbb0ff516b797e7d86bea82ef74a PASS It is hard to do backport of revisons which fixes this bug. Need to discuss with LTO people in GCC mailing list =Reload spill fix -tcwg180 (2/10)= Emailed my status on benchmarking https://gcc.gnu.org/ml/gcc-patches/2014-07/msg00450.html This bug cannot be fixed without performance degradation. So if it cannot be up streamed, the reporter can use the patch to build his package atleast. Planning to close this bug if I did not receive any comments from maintainers. =Misc (2/10)= * GCC internal team meeting * Meeting with Ryan == Plan == * Benchmark coremark -O3 vs -O3 -flto. * Email to marcus on ABI for large memory model in Aarch64. * Cauldron preparation. == Planed leaves == * Jul 18- 25: Travel to Cambridge.

10 years, 11 months

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[ACTIVITY] 7-11 July 2014

by Kugan

== Progress == - 8th and 9th on holiday (4/10) - Zero/sign extension elimination (TCWG-291) 3/10 * Patch one is accepted * Posted the modified patch 2 after some discussions * Started analysing the code generated for coremark and spec2k * Looks there are more places that can be improved. I will post additional patches after completing it - Launchpad bugs (3/10) * https://bugs.launchpad.net/gcc-linaro/+bug/1320965 * https://bugs.launchpad.net/gcc-linaro/+bug/1331112 == Plan == - sha1 regressions - 15th and 16th on holiday

10 years, 11 months

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[ACTIVITY] Week 28

by Zhenqiang Chen

== Progress == * One day off. * Test and send out the local NLS patch for community review (1/10). * Test ccmp patches. Can not reproduce a FAIL in previous regression test with the latest trunk(TCWG-488, 1/10). * Test codes to skip arm_split_constant (TCWG-486, 3/10). Performance results seam OK for spec2000, coremark dhystone and eembc. * R/M toolchain related work (3/10). == Plans == * Ping pending patches. * Update ccmp patches. == Planed leaves == * Jul. 15 - 25: Travel to Cambridge. * Aug. 4 -8: Annual leaves.

10 years, 11 months

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[Weekly] 07-11 JULY 2014

by Michael Collison

== This week == Provide ldp/stp peephole optimization for Aarch64 [TCWG-446] [0/10] - Halted development due to duplicate ARM development project by Bin Cheng Launchpad 1318831 - Invalid unpoisoning of stack redzones on ARM [3/10] - Verifying test results Launchpad 1267761 - miscompilation of unsigned comparison on aarch64 [2/10] - Testing under way on Jenkins Neon intrinsic tests [4/10] - background work to gain familiarity with effort Misc Meetings [1/10] == Next week == - Verify testing on Launchpad 1267761 and 1318831 - Begin investigating compiler bugs discovered by neon intrinsic tests == Future ==

10 years, 11 months

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[ACTIVITY] 7-11 July 2014

by Christophe Lyon

== Progress == * GCC trunk cross-validation - reported a few regressions * Automation Framework (2/10) - looked at Jenkins configuration & logs of some failures * AArch64 libsanitizer (1/10) - tried to use cbuild2 in the lab to build & test on HW, but all my build attempts failed for various reasons * Neon intrinsics tests (3/10) - feedback from upstream requests some renaming changes + GNU coding style fixes - since reformating the existing testsuite is a manual and error-prone task, it will bring additional delay in improving GCC testsuite. - it's probably more efficient to run the existing tests regularly and start reporting & fixing the bugs identified, not waiting for the full conversion - updated the existing tests for fp16 and poly* types support with GCC (reference built with armcc) - interestingly, compiling the original testcases with armcc for aarch64 caused ICE on 28 source files. * Misc (meetings, conf-calls, ....) (4/10) == Next == Holidays for 2 weeks

10 years, 12 months

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[ACTIVITY] Week 28

by Renato Golin

== Progress == * Monday holiday * Automation Framework (CARD-1378 6/8) - TCWG D01 moved in, Chromebooks out - Movng LLVM buildbots to D01s - D01s have no NEON support... :S - We might have to move some Chromes back in - Moving hackboxes to Chromebook 2s * Background (2/8) - Code review, meetings, discussions, etc. == Plan == * Deal with NEON issue in the rack * Finish Cauldron presentation * Try to get the D01s as buildbots, even without NEON

10 years, 12 months

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[ACTIVITY] 30 June - 4 July 2014

by Omair Javaid

== Progress == * AArch64 GDB reverse watchpoints issue. [TCWG-503] [4/10] -- Found a new fix in generic process record implementation. Testing stalled by too many 2500 failures seen on arm-linux-gdb in general and some 850 record/replay implementation. * AArch64 GDB handling of functions with empty prologue. [TCWG-504] [4/10] -- Analysis of prologue generated by aarch64-gcc -- Make an understanding of code implementation for arm-linux-gdb. -- Try to reproduce reported bugs. * Testing and Analysis of testsuite failures in arm-linux-gdb [TCWG-509] [1/10] * Browsing gdb related upstream discussions. [1/10] == Plan == * AArch64 GDB reverse watchpoints issue. [TCWG-503] -- Test and submit fix for target record for the case where we cant step breakpoints. * Investigate issues in arm-linux-gdb testsuite results. [TCWG-509] * Travel preparations to UK for Tools cauldron and TCWG sprint. -- Obtain health certificate for international travelers. * On Holiday from 14th to 17th July 2014.

10 years, 12 months

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[ACTIVITY] June 30th - July 4th

by Bernie Ogden

=Progress= memcpy regression on A9 - TCWG-390 [7/10] * Tweaked bench.py some more * Cobbled together a bare metal version of cortex-strings benchmark * Was surprised to find that the problem does not relate to Linux * Have some evidence that points at the branch predictor Meetings/mail/etc [3/10] =Plan= See if A9 performance is recoverable without sacrificing other targets Push some of my improvements into the cortex-strings repo Possibly write up my cortex-strings-benchmarking-in-lava method Back to cbuild benchmark automation

11 years

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[ACTIVITY] Week 27

by Yvan Roux

== Issues == * TCWG build machine disks start to be full. == Progress == * TCWG-496 : Linaro GCC 4.9 2014.07 (5/10) - Still worked on backports validation. - Manual/Jenkins/cbuildv2/schroot validation and results comparison. * Misc: (5/10) - Various meetings. - Office relocation == Next == * FSF branch merge for 2014.07 * Complete validation and backports.

11 years

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[ACTIVITY] 30 June - 4 July 2014

by Kugan

== Progress == Zero/sign extension elimination (TCWG-291) 10/10 - Patch updated based on review comments. - Regression tested with standard set-up - Created test-cases. - Set-up additional architectures for validation * aarch64-none-elf --with-abi=ilp32 (Foundation model) * aarch64-none-linux-gnu --with-abi=ilp32 seems to be broken. * Set-up qemu based s390x-ibm-linux * Tried x86_64-linux -mx32 but ran into many issues. - Patch now waiting for s390x-ibm-linux. All others are OK. - will post once the results are available == Plan ==. - Spec2k regressions - sha1 regressions - 8th and 9th on holiday.

11 years

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[Weekly] 30 JUNE -04 JULY 2014

by Michael Collison

== This week == Provide ldp/stp peephole optimization for Aarch64 [TCWG-446] [6/10] - Investigated options for improving ldp/stp pairing and developed patch - Testing underway Launchpad 1267761 - miscompilation of unsigned comparison on aarch64 [1/10] - Backported revision 206529 from trunk - Testing under way on Jenkins Launchpad 1296942 - marked fixed released based on backport by Yvan Roux [1/10] - July 4th holiday [2/10] == Next week == Complete testing on Launchpad 1267761 and TCWG-446 and initiate code review == Future == Travel to Cambridge on July 11th for Cauldron and TCWG Spring

11 years

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