linaro-toolchain

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5705 discussions

RE: Semi-hosting on v8 Foundation Model using gnu tools

by rorycollins＠hushmail.com

I got an app to compile fine for v8 FM with gcc, but I notice that seg-faults hang the simulator. Using raise() properly exits FM, but I can't seem to trap the seg-fault with signal() or do anything intelligent to know about the seg-fault. Normal execution works well. int main(int argc, char *argv[]) { * (unsigned int *) (0) = 0; // seg-fault hangs FM return(0); } thanks, Rory -----Original Message----- From: linaro-toolchain-boun...(a)lists.linaro.org [mailto:linaro-toolchain-boun...@lists.linaro.org] On Behalf Of Matthew Gretton-Dann Sent: Sunday, May 19, 2013 2:47 PM To: Padgett Don-B43265 Cc: linaro-toolchain(a)lists.linaro.org Subject: Re: Semi-hosting on v8 Foundation Model using gnu tools Don, On 17/05/13 20:57, Padgett Don-B43265 wrote: > The v8 Foundation Model User Guide has a bare metal hello world example > that uses semi-hosting. The Makefile uses ARM tools, however. Is there > equivalent support for this example using a bare metal version of the > gnu tools, such as > gcc-linaro-aarch64-none-elf-4.8-2013.04-20130422_linux.tar.xz? I took > a look, but didn't see a way to do this. It is possible but not necessarily easy. Using the binary tools you've downloaded you will want to do something like the following: aarch64-none-elf-gcc -specs=elf-aem-ve.specs ... The -specs option has to be on all your invocations of GCC and G++. You should also invoke the linker through GCC with this option. Then you need to invoke the model, given an image called foo.axf: Foundation_v8 --image foo.axf --semi-host="foo.axf OPT1 OPT2" --quiet Note that the first option to --semi-host is the name of the image again. Thanks, Matt

12 years, 10 months

Re: gcc 4.8-2013.06 reports incorrect version number

by Mans Rullgard

You'll have better luck sending bug reports to the linaro-toolchain mailing list. On 18 June 2013 11:50, Bernhard Rosenkränzer <bernhard.rosenkranzer(a)linaro.org> wrote: > Hi, > the 4.8-2013.06 tarball built without version overrides reports itself as: > 4.8-2013.06-0~dev > Looks like the release flag isn't set in the tarball. > > ttyl > bero -- Mans Rullgard / mru

12 years, 10 months

[ACTIVITY] 10-14 June 2013

by Christophe Lyon

== Progress == * Merges for linaro-4.8-2013.06: - investigated why the cross-validation lack libpthread and libdl. - fixed cbuild to make these libs available in the same dir as ld-linux.so - not sure why it wasn't necessary several weeks ago when I first spawn libsanitizer tests: we changed the prebuilt tarball since then, but the libs are still at the same place; the binutils version changed though. * Re-spawned a merge request for libsanitizer, using the updated cbuild (libpthread/libdl support, qemu flags updated) and the updated gcc-4.8 (with my patch to cope with qemu's output of /proc/self/maps) * Merges for linaro-4.8-2013.07: updated list * Aarch64 frame growing downward: started. * Disable-peeling: restarting looking at vectorizer. == Next == * Merges for linaro-4.[78]-2013.07: update list * disable peeling: see how to make the vectorizer less aggressive * Aarch64 frame growing downward. * Neon intrinsics/vuzip/veor: resume work * Book hotel/flight for Connect

12 years, 11 months

[ACTIVITY] Week 24

by Yvan Roux

== Issues == * None. == Progress == * Releases merge reviews: - Finished reviews for releases. * Launchpad bug #1187247: - Closed as invalid since the issue was on an attempt to access at an invalid address. * Cbuild Babysitting: - Fixed 4.8 repository update on toolchain64. - Recreate ancestors tarballs and re-spawned jobs - Re-started Calxedas... * LRA on ARM and AArch64: - Resumed the task. - Investigation of AArch64 failure on-going. == Plan == * Mainly LRA

12 years, 11 months

[ACTIVITY] 10-14 June 2013

by Venkataramanan Kumar

== Progress == * libssp support for AArch64 Libssp support needed AArch64 frame to grow downward. But it is currently defined as growing upward. This work is currently in hold. Needed frame layout changes before restarting. Waiting for feedback from Matt. * AAarch64 testing Drilling down Boot strap failure with GCC 4.9 trunk on open embedded image with V8 model. Fails at time xg++ is linking. Not much progress. Set up Cross build and test in V8 model for GCC testsuites. Also looking at increasing timeout for individual tests. * AArch64 LTO and PGO support. Started on understanding PGO and LTO runs with AArch64. == Plan == * Continue bootstrap testing and push patches to GCC * Continue LTO and PGO runs for AArch64

12 years, 11 months

[ACTIVITY] 10 - 14 June 2013

by Omair Javaid

== Progress == * Investigated gdb.dwarf2 unsupported issues wrote two new patches for gdb.dwarf2 testsuite. * Read some background on dwarf2 to translate test written in x86 assembly into arm assembly. * Got refusal of visa from Irish embassy. Ran after visa consultants for issues related to visa application. * Calls with Irish consulate officers for appeal process and causes of refusal. == Plan == * Submit ready patches for dwarf2 untested/unsupported problems. * Translate dwarf2 tests written in x86 to arm asm. * Chromebook os update on a faster sd card. (Still pending) * Add JIRA cards for gdb features missing on arm. (Still pending) * Prepare documentation for future visa applications.

12 years, 11 months

[ACTIVITY] Week 24

by Zhenqiang Chen

== Issues == * None == Progress == * Investigate conditional compare RTL representation. - Expand conditional compare to cmp_and/cmp_ior. - Test is ongoing * Investigate lp: 1189445. Patch is in testing. * Identify the root cause for lp: 1189448. FSF4.8 does not have the buggy code. Linaro 2013.06 and trunk have fixed it. == Plan == * Continue on conditional compare.

12 years, 11 months

[ACTIVITY] 11-14 June 2013

by Kugan

== Public Holiday == * Monday, 10 June (4 day week) == Progress == * VRP based zero/sign extension - Pinged the patch. * Generate a single call to divmod - Builtin based implementation bootstrapped and passes regression. - posted patch and initiated discussion (http://gcc.gnu.org/ml/gcc/2013-06/msg00100.html) - long long is not handled now * Better end of loop counter optimisation - Dropped md patch - Verified that Bin Cheng's RTL change noop_move_p fixes this. == Plan == * Respond to patch review * Set-up X86 benchmarking locally for Spec2k

12 years, 11 months

[ACTIVITY] week 24

by Rob Savoye

== Progress == * Did QEMU testing for the release by running several images on a few platforms. * Did the GCC 4.7-2013.06 release. * Did the GCC 4.8-2013.06 release. * Did a spin of the GCC 4.7-2013.06 release. * Updated benchmark parsing scripts, downloaded historical benchmark data and data from the release testing. * Updated SQL query and gnuplot scripts to work with new data. * Produced some benchmark graphs. * Finally figured out how to spawn remote Cbuildv1 tests and benchmarks. == Plan == * Focus on performance and regression test graphs. * Do builds of FSF GCC branches to compare with Linaro branches. * Continue improving Cbuildv2 as use it to do all these builds and testing. - rob -

12 years, 11 months

[ACTIVITY] Week 24

by Will Newton

== Progress == * Branched and released binutils, newlib and eglibc. * Wrote up some release process docs on the wiki. * Fixes and further investigation of AArch64 ifunc issue. * Submitted memcpy to upstream gerrit and ran more benchmarks. * Submitted new fix for gdb frexpl issue. == Issues == * None. == Plan == * Fix AArch64 ifunc issue. * Fix gdb.thread issue. * strlen -- Will Newton Toolchain Working Group, Linaro

12 years, 11 months

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