linaro-toolchain

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[ACTIVITY} 2011-07-15

by David Gilbert

== String routines == * Sent a patch to libc-ports with modified configure scripts to add subdirectories for architecture specific ARM code, and the memchr.S from cortex-strings. == 64 bit atomics == * Working through comments on my patches and the set of discussions about the kernel interface for the helper case - not really sure which way that's going to go. == QEmu == * Looking at how tracing works, considering adding tracing to sd card code to help track down some of the sd card issues. Dave

14 years, 1 month

[ACTIVITY] report week 28

by Peter Maydell

RAG: Red: Amber: OMAP3 patch upstreaming is slower progress than hoped Green: Current Milestones: || || Planned || Estimate || Actual || ||qemu-linaro-2011-07 || 2011-07-21 || 2011-07-21 || || Historical Milestones: ||qemu-linaro 2011-04 || 2011-04-21 || 2011-04-21 || 2011-04-21 || ||qemu-linaro 2011-05 || 2011-05-19 || 2011-05-19 || n/a || ||close out 1105 blueprints || 2011-05-28 || 2011-05-28 || 2011-05-19 || ||complete 1111 planning || 2011-05-28 || 2011-05-28 || 2011-05-27 || ||qemu-linaro-2011-06 || 2011-06-16 || 2011-06-16 || 2011-06-16 || == linaro-qemu-11.11 == * initial testing of linaro-qemu preparatory to next week's release == upstream-omap3-patches == * finished nand and onenand cleanup, sent 12-patch series upstream == gsoc-support == * mid-term evaluations == other == * discussion with other qemu developers about shortcomings / improvements to the device/bus model (qdev) * sent patch to fix compile error on ia64 hosts * patch review, etc Current qemu patch status is tracked here: https://wiki.linaro.org/PeterMaydell/QemuPatchStatus Absences: 1-5 August: Linaro sprint 1111 15-19 August: KVM Forum and LinuxCon NA, Vancouver

14 years, 1 month

[ACTIVITY] Weekly status

by Richard Sandiford

== This week == * Fixed the unnecessary union initialisers that were causing ICEs with -g. This turned out to be a lot more work than Richard's one-liner suggested. :-) * Backported Chung-Lin's arm_legitimize_reload_address patch to 4.5. * Backported the smallest_mode_for_size patch to 4.5 and 4.6. * Patch review. * Found an off-by-one error in the vectoriser that caused it to think that contiguous memory regions overlapped. Unfortunately, this meant that a lot of my microbenchmarks were using the fallback ARM code instead of the nice-looking NEON code that I could see in the asm. * A bit more work on auto inc/dec. It tested regression-free for all default languages. Ran some more benchmarks and posted the results. == Next week == * Bugs and auto inc/dec. Richard

14 years, 1 month

[ACTIVITY] weekly status

by Ken Werner

Hi, * analyzed/tested toolchain issues the Linaro Android folks are facing * libquadmath disabled due to configure test fail of the target libiberty (#809435) * fix will be in 11.07 release * ICE when building bionic's libm (#809768) * not reproducible with a "plain" Linaro GCC * non upstreamable workaround in place (prevents the ICE but degrades the DWARF quality) * binary toolchain at http://people.linaro.org/~kwerner/ * libunwind * localunwrework branch now on git.linaro.org Note: I'll take two days off at the end of next week (21-22). Regards Ken

14 years, 1 month

[ACTIVITY] 11th - 15th July

by Asa Sandahl

Achieved: * Set up networking on the Panda board, ssh to the board from my laptop works fine. * Downloaded the benchmarks (SPEC2000 and EEMBC) and built them for x86. I now have a basic understanding of what the benchmarks do and how to run them. * For EEMBC I used the -m32 flag for building on my 64 bit installation. * For the SPEC2000 I used the Linaro configuration file and enabled the portability flags for a 64-bit host. Played around with different "runspec" actions and options. Building and running individual test cases as well as the full test suites. Finally I did a reportable run for all benchmarks. It took several hours and in the end I got a result for my laptop. Next step: * Cross-compile EEMBC and SPEC2000. I will try linaro-gcc and the cross compiler that comes with Natty. Best Regards Åsa

14 years, 1 month

[ACTIVITY] July 11-14

by Ira Rosen

Hi, - merged over-widened multiply patch to gcc-linaro-4.6 (now vectorized rgbyiqv should be about as good as its scalar version) - continued working on over-widened shifts and bit operations Ira

14 years, 1 month

Error: selected processor does not support requested special purpose register

by mins.lin＠globalunichip.com

Hi, I used Linaro cross-toolchain version 4.5 (gcc-4.5-arm-linux-gnueabi) to compile linux-linaro-11.05 for beagle board, but got the following error messages: ---- AS arch/arm/boot/compressed/head.o arch/arm/boot/compressed/head.S: Assembler messages: arch/arm/boot/compressed/head.S:127: Error: selected processor does not support requested special purpose register -- `mrs r2,cpsr' arch/arm/boot/compressed/head.S:134: Error: selected processor does not support requested special purpose register -- `mrs r2,cpsr' arch/arm/boot/compressed/head.S:136: Error: selected processor does not support requested special purpose register -- `msr cpsr_c,r2' make[2]: *** [arch/arm/boot/compressed/head.o] Error 1 make[1]: *** [arch/arm/boot/compressed/vmlinux] Error 2 make: *** [uImage] Error 2 ---- The .config file I used for kernel build is "config-2.6.38-1003-linaro-omap" which is from hwpack_linaro-omap3-x11-base_20110526-5_armel_supported.tar.gz My host development platform is 64-bit Ubuntu 10.04.2 LTS (Linux ubuntu 2.6.32-32-generic #62-Ubuntu SMP Wed Apr 20 21:52:38 UTC 2011 x86_64 GNU/Linux). Is this a known bug, or did I miss anything else ? Thanks. --------------------------------- Email Confidentiality Notice ------------------------------------------ If you are not the intended recipient for this CONFIDENTIAL E-mail, please delete it immediately without keeping or distributing any copy and notify the sender. ----------------------------------------------------------------------------------------------------------------------

14 years, 1 month

[Activity] Week ending July 8th .

by Ramana Radhakrishnan

== GCC == === Progress === * Panda board up again with apparently no change with software on it. Not sure what caused the difference today ! Now chugging along with SPEC2k. * Back on to BRANCH_COST . SPEC2k now running fully whence panda board was restored. * Submitted cleaned up neon shift immediates patch for merging. * On merge request review in Linaro this week. * Backported arith_shiftsi patch to 4.6 branch upstream. (done) * Identified particular patterns that have issues with scheduler descriptions in A8 and A9 . Working on fixes. === Plans === * Submit one_cmpldi2 patch for neon upstream. * Finish the scheduler patches. * Investigate A8 vs A9 regressions. * Look at EPILOGUE_USES and coremark . not sure why it regresses in performance yet. Meetings: * 1-1s * TCWG calls Absences. * 1st Aug - 5th August - Linaro sprint. * 8th - 9th August - Internal training. * 29th Aug - Sept. 2 - Vacation.

14 years, 1 month

[ACTIVITY] 4th - 8th July

by Andrew Stubbs

Completed the merge of FSF GCC 4.5 & 4.6 to Linaro GCC. There were a few extra test failure in the i686 testing for both toolchains, but x86_64 and arm were clean, so it seems likely to be an environmental issue (in particular, some of the failures were linker crashes). Posted an update to my widening multiplies patch 3. This one hopefully addressed the issues found by Richard Guenther. Also tested an posted updates to my other patches that had their context changed. Richard picked more holes in my patch, and also reviewed patches 4, 5 and 6. 4 & 5 only have minor issues so far, and 6 has actually been approved! :) Rewrote patch 3 yet again following review. Richard has now modified the VRP pass to make the widening pass's job simpler, so I don't need it to do as much. Also rebaslined the whole patch set; Bernd's recent patch has introduced some conflicts. Found (some of?) the bugs that broke my thumb2 constants patch. Pushed the updated patch to Launchpad for testing. Updated a lot of the patch tracker data. Half day Thursday. ---- Upstream patched requiring review: * NEON scheduling patch http://gcc.gnu.org/ml/gcc-patches/2011-02/msg01431.html * Widening Multiplies 1/7 http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg08721.html * Widening Multiplies 2/7 http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg08723.html * Widening Multiplies 3/7 http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg08724.html * Widening Multiplies 4/7 http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg08725.html * Widening Multiplies 5/7 http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg08726.html * Widening Multiplies 7/7 http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg08728.html

14 years, 1 month

[ACTIVITY] weekly status

by Ken Werner

Hi, * fixed a bug where libunwind could segfault when unwinding through a shared library using the ARM specific unwind tables * discussed the libuwind internals with Uli (thanks!) and concluded that the best way to implement remote unwinding for ARM is to integrate the support for the ARM.exidx* directly into the DWARF code * otherwise the user visible remote API needs to be extended for ARM only which seems to be a bad idea * requires to re-implement the existent ARM code (both local and remote) * will also benefit from libunwind's (dwarf) caching mechanism * started to re-implement the ARM code Regards Ken

14 years, 1 month

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