linaro-toolchain

linaro-toolchain@lists.linaro.org

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5488 discussions

by Zhenqiang Chen

Summary: * Read armV7-A/R reference manual and analyze bugs. Details: * Read armV7-A/R reference manual and share the instruction set part with local team. * Analyze bugs: LP: #889985 "binaries: can't step out of helper functions" and LP: #889984 "binaries: should step across helper functions" Plan: * Ramp-up on gcc. Planed leave: * Jan 21 - 29: Chinese new year holiday. Best regards! -Zhenqiang

12 years, 10 months

Jobs/tasks inside the group

by Michael Hope

Hi there. I want each administrative task inside our group to have an owner and a fill-in. I've started a list at: https://wiki.linaro.org/WorkingGroups/ToolChain/Jobs I took the chance to hand off some of my jobs as well so you might see your name somewhere new (but hopefully not surprising). I'll discuss this at tonight's meeting and in the 1-on-1s. Reply away if you'd like more detail or have a task to add. -- Michael

12 years, 10 months

[ACTIVITY] report week 01

by Peter Maydell

[short week, three days] RAG: Red: Amber: Green: Current Milestones: || || Planned || Estimate || Actual || ||cp15-rework || 2012-01-06 || 2012-01-17 || || ||initial-a15-system-model || 2012-01-27 || 2012-01-27 || || ||qemu-kvm-getting-started || 2012-03-04?|| 2012-03-04?|| || (for blueprint definitions: https://wiki.linaro.org/PeterMaydell/QemuKVM) Historical Milestones: ||a15-usermode-support || 2011-11-10 || 2011-11-10 || 2011-10-27 || ||upstream-omap3-cleanup || 2011-11-10 || 2011-12-15 || 2011-12-12 || == other == * catchup on email, etc * patch review: patches for Calxeda's Highbank SoC model * put together pull requests for target-arm and arm-devs patchqueues * rebased qemu-linaro, added patches for things we want to fix in 2011.01, rolled a tarball, tested it and sent to Michael H for testing

12 years, 10 months

Operations on intrinsic types

by Michael Hope

Hi Ramana. You were right about being able to do operations on intrinsic types. Instead of doing the admittedly made up: int16x4_t foo2(int16x4_t a, int16x4_t b) { int16x4_t ca = vdup_n_s16(0.2126*256); int16x4_t cb = vdup_n_s16(0.7152*256); return vadd_s16(vmul_s16(ca, a), vmul_s16(cb, b)); } you can do: int16x4_t foo3(int16x4_t a, int16x4_t b) { int16x4_t ca = vdup_n_s16(0.2126*256); int16x4_t cb = vdup_n_s16(0.7152*256); return ca*a + cb*b; } which is more readable and, as an added bonus, generates the multiply-and-accumulate that I missed when using intrinsics. Nice. -- Michael

12 years, 10 months

[ACTIVITY] Jan 02 - Jan 05

by Ulrich Weigand

== GDB == * Ongoing discussion on remote support for "info proc" and core file generation. * Fixed various GDB 7.4 regressions on multiple platforms. == GCC == * Patch review week. * Started looking into current status of performance patches. Mit freundlichen Gruessen / Best Regards Ulrich Weigand -- Dr. Ulrich Weigand | Phone: +49-7031/16-3727 STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E. IBM Deutschland Research & Development GmbH Vorsitzender des Aufsichtsrats: Martin Jetter | Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht Stuttgart, HRB 243294

12 years, 11 months

Release notes for 2012.01

by Michael Hope

I liked Andrew's idea of sharing the release notes so I stole it for this month: https://wiki.linaro.org/MichaelHope/Sandbox/GCC2012.01ReleaseNotes Please add anything new and noteworthy that you've done to this draft. -- Michael

12 years, 11 months

[ACTIVITY] weekly status

by Ken Werner

Hi, * Android * migrated my linaro android build environment * did a small change to the debuggerd patch (thanks Sylvain) * OpenEmbedded * the linaro binary toolchain uses multiarch paths while OE doesn't -> setup a workaround to make it look like a classic one * however, I think what I really want is to build the libc instead of using the one provided by the binary external toolchain * The core-image-minimal still doesn't boot properly because 'init' doesn't come properly Regards Ken

12 years, 11 months

Patch drop: fwprop.c patch for neon-strided-load-extract

by Richard Sandiford

The remaining change for neon-strided-load-extract is to allow fwprop.c to propagate: (set (reg X) (subreg (reg Y) N)) even if no further simplifications are possible. I posted the original patch for comments here: http://article.gmane.org/gmane.comp.gcc.patches/246180/ and fixed the problem that H.J. spotted. I wasn't entirely happy with the benchmark results though, so it never became an RFA. Richard gcc/ * fwprop.c (propagate_rtx): Also set PR_CAN_APPEAR for subregs. Index: gcc/fwprop.c =================================================================== --- gcc/fwprop.c 2011-09-15 14:36:23.206143787 +0100 +++ gcc/fwprop.c 2011-09-15 14:36:40.995131564 +0100 @@ -664,7 +664,12 @@ propagate_rtx (rtx x, enum machine_mode return NULL_RTX; flags = 0; - if (REG_P (new_rtx) || CONSTANT_P (new_rtx)) + if (REG_P (new_rtx) + || CONSTANT_P (new_rtx) + || (GET_CODE (new_rtx) == SUBREG + && REG_P (SUBREG_REG (new_rtx)) + && (GET_MODE_SIZE (mode) + <= GET_MODE_SIZE (GET_MODE (SUBREG_REG (new_rtx)))))) flags |= PR_CAN_APPEAR; if (!for_each_rtx (&new_rtx, varying_mem_p, NULL)) flags |= PR_HANDLE_MEM;

12 years, 11 months

[ACTIVITY] 2011-12-23 - and goodbye

by David Gilbert

== QEMU == * Wrote the context routines for Eglibc, including those that QEMU uses These pass all the context tests I could find, including QEMUs coroutine tests, and with them QEMU seems to boot OK. I've got a full eglibc test run going at the moment, but I don't think anything else uses them. I posted them with comments and a question to libc-ports; I'll try and chase follow ups. == String routines == * I posted the strchr and strlen routines to eglibc (libc-ports) * On strchr the question of whether it was worth using the longer version that's faster for longer strings (but slower for shorter strings) came up. I posted some stats, observations etc - and there is still a discussion on going about it. * For strlen, rth noted the same trick that I'd originally seen in newlib (and for which RichardS and Ramana had suggested) of a quicker end-of-string sequence using clz. I'd avoided this because I'd originally seen it in newlib and didn't want to copy it; but since 3 people have individually suggested it it would seem using. == Goodbye! == Thank you all for a fun & interesting year! I'm sure many of us will meet online again in the future. I'll try and follow my linaro.org address while it's still live to check for any replies to any patches/comments etc. Feel free to mail me at davidgil(a)uk.ibm.com (work) or dave(a)treblig.org (home); for Linaro people I've also added some more contact methods at: https://wiki.linaro.org/Internal/People/DaveGilbert/Contact Thanks again! Dave

12 years, 11 months

Fwd: New question: problem in installing Linaro tools on Ask Linaro

by Andy Doan

anyone have a suggestion for this person? -------- Original Message -------- Subject: New question: problem in installing Linaro tools on Ask Linaro Date: Mon, 26 Dec 2011 21:31:57 -0800 (PST) From: Ask Linaro <dnsadmin(a)linaro.org> To: doanac <andy.doan(a)linaro.org> Ask Linaro - Q & A forum for Linaro developers <http://ask.linaro.org/> ------------------------------------------------------------------------ Hello doanac, chandrakala <http://ask.linaro.org/users/172/chandrakala> has just posted a new question on Ask Linaro, entitled problem in installing Linaro tools <http://ask.linaro.org/questions/456/problem-in-installing-linaro-tools> and tagged "/linaro <http://ask.linaro.org/tags/linaro/> installation <http://ask.linaro.org/tags/installation/>/". Here's what it says: Hi all, Iam new to linux and gnu tools. i have downloaded linaro gnu tools to install cortex-a8 on my ubuntu machine. iam able to successfully install gcc tools. But when i try to install arm tools it is throwing error. following are the commands used to install gnu tools and the error it is generated mckala@mckala:~/Desktop/gstreamer/gcc_objdir$ ../gcc-linaro-4.6-2011.12/gcc-linaro-4.6-2011.12/configure --target=arm-*-elf --disable-bootstrap --enable-languages=c,c++ --with-mode=thumb --with-arch=armv7-a --with-tune=cortex-a8 --with-fpu=neon --with-float=softfp --prefix=/home/mckala/Desktop/gstreamer/gcc_objdir --disable-werror --with-newlib mckala@mckala:~/Desktop/gstreamer/gcc_objdir$ make all-host mckala@mckala:~/Desktop/gstreamer/gcc_objdir$ make install-host with this gnu tools installation is completed and i did not get any error. when i used the following command to install cross compiler, it is giving error mckala@mckala:~/Desktop/gstreamer/gcc_objdir$ make The error is checking for suffix of object files... configure: error: in |/home/mckala/Desktop/gstreamer/gcc_objdir/arm-*-elf/libgcc': configure: error: cannot compute suffix of object files: cannot compile See|config.log' for more details. make[1]: *** [configure-target-libgcc] Error 1 config.log file is showing the following error. gcc_objdir/arm-/-elf/bin/ -B/home/mckala/Desktop/gstreamer/gcc_objdir/arm-/-elf/lib/ -isystem /home/mckala/Desktop/gstreamer/gcc_objdir/arm-/-elf/include -isystem /home/mckala/Desktop/gstreamer/gcc_objdir/arm-/-elf/sys-include -V >&5 xgcc: fatal error: no input files compilation terminated. Can any one please help on this. Thanks in advance. Don't forget to come over and cast your vote. Thanks, Ask Linaro P.S. You can always fine-tune which notifications you receive here <http://ask.linaro.org//users/16/doanac/subscriptions/>. ------------------------------------------------------------------------

12 years, 11 months

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