- linaro-toolchain - lists.linaro.org

[ACTIVITY] 20-24 January 2020

by Christophe Lyon

== Progress == * BFD Linker: - GNU-629: non-contiguous memory support: debugging * GCC: * GCC-9: continued work for validation of -mpure-code on v6m: local newlib/crt0 patches, patched simulator. Running various validation configurations * GCC upstream validation: - reported a couple of failures/regressions * misc: - infra fixes / troubleshooting / reviews == Next == * Binutils: GNU-629: support non-contiguous memory regions in linker * GCC-9: continue work for validation of -mpure-code on v6m

5 years, 3 months

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[ACTIVITY] report week ending 24 Jan

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] - code review: + RTH's bug fix for the PAuth ComputePAC operation + patchset adding DMA support for Exynos4210 UARTs - small patchset documenting the right way to conditionally run expensive computations that are only needed for trace event output, and updating a handful of places that used an older (worse) method - more QEMU documentation conversion to rST; in particular wrote a Sphinx 'hxtool' extension to handle pulling out fragments of documentation from QEMU's '.hx' files which define and document command line options thanks -- PMM

5 years, 3 months

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adding branch tracing and reverse debugging in GDB using Coresight etm traces

by zied guermazi

hiI am progressing in the implementation of the proposal "GDB process record and replay with ARM Coresight" https://lists.linaro.org/pipermail/coresight/2019-July/003021.html so far I was able to use perf events to configure the drivers for etm and collect the traces. the code was tested successfully on an STM32MP157A discovery kit (arm v7). and I can collect the traces from the perf mmapped aux area. For parsing them I needed to gather information about the cpu and etm registers. those are available in the events of type PERF_RECORD_AUXTRACE_INFO in the priv section. priv is a kind of "opaque" data structure where the layout is depending on the perf pmu drivers. the implementation of perf tool gives a good example to follow. I needed also to make a wrapper around opencsd library and again perf was offering a good example to follow. those are good reasons to think about factoring out the functionality of parsing etm traces on linux system in a dedicated library that can be reused by other software, a kind of libcoresightperf.is there any plan or ongoing activities for such a library? Kind RegardsZied Guermazi

5 years, 3 months

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[ACTIVITY] 20 - 24 January 2020

by Diana Picus

== Progress == * More EuroLLVM submissions reviews * More investigations into Morello bare metal debugging * Started looking into updating lldb for the latest Morello architecture changes * Asked Adhemerval to look into PR44157 == Plan == * More Morello * Keep an eye out for 10.0.0 - rc1

5 years, 3 months

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[ACTIVITY] 20 - 24 Jan 2020

by Prathamesh Kulkarni

== This Week == * GCC development - PR47785: Addressed Richard's suggestions and posted patch upstream. - PR92867: Addressed Joseph's suggestions and posted patch upstream. * GCC bugzilla: - PR93397: Investigated issue. * Misc - Meetings == Next Week == - Continue ongoing tasks

5 years, 3 months

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[ACTIVITY] week ending 19 Jan 2020

by Richard Henderson

[VIRT-327 # Richard's upstream QEMU work ] * Implement x86_64-linux-user vsyscall page, which should keep Peter's pre-merge testing working. * Another tcg queue pull without the bits that depend on the vsyscall implementation above. * Posted v2 of some fixes to -accel option processing. * Posted v2 of some fixes to target/arm syn data syndrome bits. * Wrote some test cases for a target/arm pauth sbox fix. * Investigated a fix for memory layout of -static-pie binaries. * Random patch review. r~

5 years, 3 months

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[ACTIVITY] week ending Jan. 19 2020

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= Extend gdbstub for SVE ([VIRT-281]) - posted [PATCH v5 00/22] gdbstub refactor and SVE support (+check-tcg tweaks) Message-Id: <20200114150953.27659-3-alex.bennee(a)linaro.org> [VIRT-281] <https://projects.linaro.org/browse/VIRT-281> Upstream Work ([VIRT-109]) ========================== - played with [for-5.0 PATCH 00/11] Support for reverse debugging with GDB Message-Id: <157709434917.12933.4351155074716553976.stgit@pasha-Precision-3630-Tower> - still broken but could be build stability - while reviewing vsyscall patches ran into qemu-x86_64, buster /sbin/ldconfig and setup_arg_pages (a mind dump) Message-Id: <874kwukmxr.fsf(a)linaro.org> - posted [qemu-web PATCH] documentation: update links to readthedocs Message-Id: <20200113103550.1133-1-alex.bennee(a)linaro.org> - we successfully recovered the qemu project name for rtd [VIRT-109] <https://projects.linaro.org/browse/VIRT-109> Completed Reviews [3/3] ======================= [for-5.0 PATCH 00/11] Support for reverse debugging with GDB Message-Id: <157709434917.12933.4351155074716553976.stgit@pasha-Precision-3630-Tower> - CLOSING NOTE [2020-01-13 Mon 18:00] Introduces some regressions into check-block that need to be fixed first. Added: <2020-01-06 Mon> [PATCH 0/4] migration: Replace gemu_log with qemu_log Message-Id: <20200114030138.260347-1-jkz(a)google.com> [PATCH 0/3] linux-user: Implement x86_64 vsyscalls Message-Id: <20200114210921.11216-4-richard.henderson(a)linaro.org> Current Review Queue ==================== * [PATCH v2 0/7] configure: Improve PIE and other linkage Message-Id: <20191218223441.23852-1-richard.henderson(a)linaro.org> Added: <2020-01-06 Mon> * {RFC PATCH v3 000/132} Proof of concept for Meson integration Message-Id: <1576155176-2464-1-git-send-email-pbonzini(a)redhat.com> Added: <2019-12-12 Thu> * {PATCH 0/2} tests/acceptance: Add boot vmlinux test Message-Id: <20191206140012.15517-1-wainersm(a)redhat.com> Added: <2019-12-06 Fri> * {RFC PATCH 00/10} hw/avr: Introduce the Arduino board Message-Id: <20191128015030.27543-1-f4bug(a)amsat.org> Added: <2019-11-28 Thu> -- Alex Bennée

5 years, 4 months

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[ACTIVITY] 13-17 January 2020

by Christophe Lyon

== Progress == * BFD Linker: - GNU-629: non-contiguous memory support: found problems in the testsuite when the flag is activated by default * GCC: - trying to find a way to add run more validation of -mpure-code on v6m, to support a request to backport to gcc-9: need to patch newlib's crt0.S which has some offending sequences * GCC upstream validation: - updated scripts to cope with the new git repo and release branches names * misc: - infra fixes / troubleshooting / reviews - fixed problems with automatic bisection of gcc regressions == Next == * Binutils: GNU-629: support non-contiguous memory regions in linker * GCC-9: continue work for validation of -mpure-code on v6m

5 years, 4 months

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[ACTIVITY] for week ending 17th January 2020

by Peter Smith

Morello - Upstream LLD INPUT_SECTION_FLAGS that I implemented downstream. Quite a few review comments to work through but I think I'm close to getting something accepted. This will hopefully come in useful for LLD with embedded systems. - Wrote down some definitions for the new relocations. LLD - landed fix for clang-built-linux-812 linux allyesconfig problem. - Quite a few upstream LLD and MC reviews Other Some research for the clang built linux conference.

5 years, 4 months

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[ACTIVITY] 13 - 17 January 2019

by Diana Picus

== Progress == * Out of office for 2 days * Reviewed EuroLLVM submissions * A bit more investigation into Morello bare metal debugging == Plan == * PR44157 * Morello bare metal debugging

5 years, 4 months

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missing sound libraries in version 6.3.1

by Markus Bollinger

Hello Linaro team, I want to use your cross compiler version 6.3.1, but I miss the library asound and its header (alsa/asoundlib.h) What do I need to do to fix this ? Best regards, Markus Bollinger

5 years, 4 months

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[ACTIVITY] Week 02

by Yvan Roux

* Part time at University o LLVM: * Machine Outliner: - New version submitted upstream o Misc * Various meetings and discussions.

5 years, 4 months

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Fwd: about QEMU support for SVE2 POC

by Diana Picus

Hi Ana, I don't know anything about the POC myself, but I'm forwarding this so our QEMU folks can answer. Cheers, Diana ---------- Forwarded message --------- From: Ana Pazos <apazos(a)quicinc.com> Date: Fri, 10 Jan 2020 at 19:08 Subject: about QEMU support for SVE2 POC To: diana.picus(a)linaro.org <diana.picus(a)linaro.org> Cc: Ana Pazos <apazos(a)quicinc.com> Hello Diana, We at Qualcomm are trying to find out the POC for QEMU support for SVE2. We have been using QEMU with SVE support, and need to find out when SVE2 support will be added to QEMU. I assume Linaro is involved in this task. Do you know the POC? Thanks for the help! Ana.

5 years, 4 months

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[ACTIVITY] 6-10 January 2020

by Christophe Lyon

== Progress == * BFD Linker: - GNU-629: non-contiguous memory support: sent updated versions with testcases and doc. * GCC: - trying to find a way to add run more validation of -mpure-code on v6m, to support a request to backport to gcc-9 - proposal to implement LLVM's -arm-assume-misaligned-load-store rejected by the community * GCC upstream validation: - reported/checked a few issues * misc: - infra fixes / troubleshooting / reviews - investigating problems with automatic bisection of gcc regressions - fixed a long-standing bug in proot == Next == * Binutils: GNU-629: support non-contiguous memory regions in linker

5 years, 4 months

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[ACTIVITY] week ending Jan. 12 2020

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= Extend gdbstub for SVE ([VIRT-281]) - respun [probably final iteration of gdbstub for SVE] [VIRT-281] <https://projects.linaro.org/browse/VIRT-281> [probably final iteration of gdbstub for SVE] <https://github.com/stsquad/qemu/tree/gdbstub/sve-registers-v5> Upstream Work ([VIRT-109]) ========================== - posted [PATCH v1 0/6] current testing/next (python and other fixes) Message-Id: <20200107135311.5215-1-alex.bennee(a)linaro.org> - posted [PATCH v3 0/6] semihosting read console support Message-Id: <20200108150252.6216-1-alex.bennee(a)linaro.org> - posted [PULL v2 00/14] testing fixes and semihosting console support Message-Id: <20200109141858.14376-1-alex.bennee(a)linaro.org> - posted [PATCH v1 0/2] fix for bug 1859021 Message-Id: <20200110161626.31943-1-alex.bennee(a)linaro.org> - started looking at [for-5.0 PATCH 00/11] Support for reverse debugging with GDB Message-Id: <157709434917.12933.4351155074716553976.stgit@pasha-Precision-3630-Tower> [VIRT-109] <https://projects.linaro.org/browse/VIRT-109> Completed Reviews [4/4] ======================= [PATCH] freebsd: use python37 Message-Id: <20200106123746.18201-1-kraxel(a)redhat.com> - CLOSING NOTE [2020-01-07 Tue 11:13] Queued to my tree Added: <2020-01-07 Tue> [Qemu-devel] [PATCH v3] RISC-V: Select FPU gdb xml file based on the supported extensions Message-Id: <20190821162831.27811-1-georg.kotheimer(a)kernkonzept.com> - CLOSING NOTE [2020-01-07 Tue 11:27] Looks mostly ok modulo ensuring endianess is correct. Added: <2020-01-06 Mon> [PATCH v2 7/7] configure: Support -static-pie if requested Message-Id: <20191218223441.23852-6-richard.henderson(a)linaro.org> [PATCH 0/4] vl: Fixes for cleanups to -accel Message-Id: <20200109021710.1219-1-richard.henderson(a)linaro.org> Absences ======== - 6th Jan (4 day week) Current Review Queue ==================== * [PATCH v2 0/7] configure: Improve PIE and other linkage Message-Id: <20191218223441.23852-1-richard.henderson(a)linaro.org> Added: <2020-01-06 Mon> * [for-5.0 PATCH 00/11] Support for reverse debugging with GDB Message-Id: <157709434917.12933.4351155074716553976.stgit@pasha-Precision-3630-Tower> Added: <2020-01-06 Mon> * {RFC PATCH v3 000/132} Proof of concept for Meson integration Message-Id: <1576155176-2464-1-git-send-email-pbonzini(a)redhat.com> Added: <2019-12-12 Thu> * {PATCH 0/2} tests/acceptance: Add boot vmlinux test Message-Id: <20191206140012.15517-1-wainersm(a)redhat.com> Added: <2019-12-06 Fri> -- Alex Bennée

5 years, 4 months

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[ACTIVITY] week ending 12 Jan 2020

by Richard Henderson

[VIRT-327 # Richard's upstream QEMU work ] * TCG patch queue flush, including phase 1 increase for number of mmu_idx, on which VHE is dependent. * Random patch review. * Capstone update. * cputlb cleanup in prep for modeling ASIDs. r~

5 years, 4 months

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[ACTIVITY] Week ending 10th January 2020

by Peter Smith

Morello: - Implemented INPUT_SECTION_FLAGS in LLD for the Morello toolchain, now in review. Took most of spare engineering time this week. Will attempt to upstream once committed in Morello - Fixed pr44451 upstream, it was already fixed on Morello toolchain. LLD: - Made an attempt to fix the LLD linux kernel allyesconfig + cortex-a53 erratum problem. Was not successful as kernel linker script is just about as awkward as possible for this problem. I have a good idea of what to try next. Will aim to fix early next week. - Quite a few upstream reviews, some pending from last year.

5 years, 4 months

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[ACTIVITY] report week ending 10 Jan

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] - caught up on the backlog of email that accumulated over the Christmas break - investigated an intermittent failure of a test case on our BSD hosts which had reached a failure rate that was seriously impeding the flow of pull requests. Tracked it down to glib's g_source_ref/unref not being thread-safe unless the GSource is attached to a GMainContext; QEMU gets this right for its own use but a set of mock functions used for a few testcases were not doing so, resulting in occasional races where the GSource would get destroyed while it was still in use. - code review: + Beata's "inject DABT for load/store insns KVM couldn't emulate" patch + a minor cubieboard cleanup patchset + i.MX RNGC device emulation patch - annual review season, some time spent on that thanks -- PMM

5 years, 4 months

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[ACTIVITY] 6 - 10 January 2019

by Diana Picus

== Progress == * Out of office until Tuesday * LLVM 9.0.1 - Uploaded final binaries - Still looking into PR44157 (CFI tests failing on armv7) * Morello LLDB - Trying to get bare metal debugging to work * More ARM Code of Conduct courses etc == Plan == * More Morello and PR44157

5 years, 4 months

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[ACTIVITY] 2-3 January 2020

by Christophe Lyon

Short "week" == Progress == * BFD Linker: - GNU-629: non-contiguous memory support: Cleaning up, adding testcases. * GCC upstream validation: - reported/checked a few issues * misc: - infra fixes / troubleshooting / reviews == Next == * Binutils: GNU-629: support non-contiguous memory regions in linker

5 years, 4 months

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[ACTIVITY] week ending 22 Dec 2019

by Richard Henderson

* Patch set cleaning up PIE/non-PIE linking - Add new support for static pie. * Another revision removing MMU_MODE_SUFFIX. * Random patch review. * Planning for Linux on ARM summit in Cambridge in February. r~

5 years, 4 months

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Bot failure caused by f72d001e099871fd5943679a8377f2fcc675f860

by Michael Trent

To whom, I’m seeing a failure on this bot: -- Command Output (stderr): -- /home/buildslave/buildslave/clang-cmake-armv7-quick/stage1/bin/llvm-objdump: error: '/home/buildslave/buildslave/clang-cmake-armv7-quick/llvm/llvm/test/tools/llvm-objdump/Inputs/macho-stabs-x86_64': can't find target: : error: unable to get target for 'x86_64---macho', see --version and --triple. This is just a binary file verifier. Is it the case this bot doesn’t have a mach-o disassembler? And if so, is there a way to disable this test on this bot? Thanks! MDT

5 years, 4 months

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[ACTIVITY] week ending Dec. 22 2019

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= Extend gdbstub for SVE ([VIRT-281]) - posted [PATCH v4 00/21] gdbstub refactor and SVE support (+check-tcg tweaks) Message-Id: <20191220120438.16114-1-alex.bennee(a)linaro.org> [VIRT-281] <https://projects.linaro.org/browse/VIRT-281> GSoC Mentoring Afermath ([VIRT-348]) - started working on re-base of [TCG code quality tracking] - bit of a re-factor rethink required [TCG code quality tracking] <https://github.com/stsquad/qemu/tree/tcg/tbstats-and-perf-v10> Upstream Work ([VIRT-109]) ========================== - posted [PULL 00/25] testing and logging updates Message-Id: <20191219104934.866-1-alex.bennee(a)linaro.org> - posted [PATCH v1 0/4] semihosting read console support Message-Id: <20191218180029.6744-1-alex.bennee(a)linaro.org> - posted [PATCH v2 0/5] semihosting read console support Message-Id: <20191220132246.6759-1-alex.bennee(a)linaro.org> [VIRT-109] <https://projects.linaro.org/browse/VIRT-109> Completed Reviews [4/4] ======================= {PATCH} Semihost SYS_READC implementation (v6) Message-Id: <20191104204230.12249-1-keithp(a)keithp.com> - CLOSING NOTE [2019-12-18 Wed 19:39] Found some issues with deadlocks, fixed and sent my own series including this patch. Added: <2019-12-06 Fri> [PATCH] docker: gtester is no longer used Message-Id: <1576632611-55032-1-git-send-email-pbonzini(a)redhat.com> - CLOSING NOTE [2019-12-20 Fri 12:20] Queued to my tree Added: <2019-12-18 Wed> {Qemu-devel} {RFC PATCH} Implement qemu_thread_yield for posix, use it in mttcg to handle EXCP_YIELD Message-Id: <20190717054655.14104-1-npiggin(a)gmail.com> - CLOSING NOTE [2019-12-20 Fri 13:11] Replied. [PATCH v2 00/28] cputlb: Remove support for MMU_MODE*_SUFFIX Message-Id: <20191216221158.29572-1-richard.henderson(a)linaro.org> Absences ======== - Christmas and New Year holidays Current Review Queue ==================== * [RFC PATCH 00/13] hw/timer/allwinner: Make it reusable Message-Id: <20191219185127.24388-1-f4bug(a)amsat.org> Added: <2019-12-19 Thu> * [PATCH v2 00/14] chardev: Use QEMUChrEvent enum in IOEventHandler typedef Message-Id: <20191218172009.8868-1-philmd(a)redhat.com> Added: <2019-12-18 Wed> * [RFC PATCH v3 000/132] Proof of concept for Meson integration Message-Id: <1576155176-2464-1-git-send-email-pbonzini(a)redhat.com> Added: <2019-12-12 Thu> * {PATCH 0/2} tests/acceptance: Add boot vmlinux test Message-Id: <20191206140012.15517-1-wainersm(a)redhat.com> Added: <2019-12-06 Fri> -- Alex Bennée

5 years, 4 months

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[ACTIVITY] report week ending 20 Dec

by Peter Maydell

Progress (covers two weeks; lost half of last week to the cold that's been going around the office here): * VIRT-65 [QEMU upstream maintainership] - code review + RTH's ARMv8.2-UAO patchset + RTH's ARMv8.1-PAN patchset + had a look at Huawei SDEI patchset; there are some things I don't like about the approach but I don't currently have any better ideas :-( Sent an email to the list to see if others have any suggestions. + Andrew Jones' patchset to pause the virtual timer when VM is paused + Some smmuv3 emulation fixes from Amazon + Support for emulating generic timers that run at platform-dependent frequency (rather than insisting they always run at 62.5MHz) - release work + herded a handful of key bugfixes into rc5; got rc5 and then the final release out of the door + got new s390 box into the set of machines we test QEMU on (IBM want to turn off the old one at the end of the year) + a couple of arm pull requests now 5.0 is open for new contributions thanks -- PMM

5 years, 4 months

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[ACTIVITY] 16 - 20 December 2019

by Diana Picus

== Progress == * LLVM 9.0.1 - Had trouble with our TK1 machine - Trying to build rc3 on one of the buildbots - AArch64 rc3 looks fine * Morello - Got lldb-server working on android and it seems to behave fine - Working on getting the lldb test-suite to work in remote mode with the morello android simulator - Running into all sorts of issues with it == Plan == * More of the same * Out of office: 25-26 December, 1-7 January

5 years, 4 months

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