* Holiday on Monday. [2/10]
# Progress #
* TCWG-685, GDB 7.12 release. No new issue. [1/10]
* TCWG-655, ARM linux kernel ptrace bug. [3/10]
Teach GDB testsuite to detect such kernel bug, and skip all tests
related to floating point. Patches are committed.
On the other hand, upgrade my arm kernel to 4.7.2, on which the ptrace
bug is fixed.
* TCWG-518, range stepping on ARM. [2/10].
Turned it on, but it causes some threads starvation. Investigating.
* Finish the reproducer to show odd behaviour of armv8 kernel in si_code
after PTRACE_SINGLESTEP and Will Deacon fixed it
http://lists.infradead.org/pipermail/linux-arm-kernel/2016-September/453289…
[1/10]
* Think about the GDB plan, and write down a list of things I need to
do. [1/10]
# Plan #
* TCWG-685, TCWG-518.
* GNU Cauldron.
--
Yao Qi
== Activity ==
[TCWG-610] Sent .ARM.exidx for upstream review.
Will need to rework and simplify bit to make more specific to ARM. In
summary abandon pretence of SHF_LINK_ORDER in general and concentrate
on supporting its one known use case in .ARM.exidx sections.
Made a couple of drafts of forthcoming LLVM Cauldron presentation
- Presented locally
- Modified slides after overrunning time
== Plans ==
[TCGWG-610] Rework and resend for review
llvm-cauldron on Thursday
Intending to take Friday as holiday to take advantage of visiting
parents whilst up North.
== Progress ==
* Validation
- patch reviews (Jenkins jobs, abe) mainly for the release process
* Backports
- resubmitted the pending ones
- started looking at v8.2 backports
* GCC
- resumed PR 67591 (ARM v8 Thumb IT blocks deprecated)
* arm-neon-tests
- small update to support clang, as requested by Chromium
* misc (conf-calls, meetings, emails, ....)
- catching up after holidays
== Next ==
- monitor trunk regressions
- pr 67591
- release scripts
- backports
== Progress ==
o Linaro GCC/Validation (7/10)
- Reviewed on-going Backports.
- Analysis on remaining backports dependencies on-going.
- Merged FSF GCC 6 branch.
- Last FSF GCC 4.9 merge still on-going (some conflicts to solve).
- Defining and experimenting new revisions/backports tracking
format in yaml.
o Misc (3/10)
* Various meetings and discussions.
== Plan ==
o FInish backports, and FSF branch merge for next week snapshot.
== This Week ==
* TCWG-666 (2/10)
- Martin confirmed the assert was spurious that caused some obj-c tests to fail,
removing it passes bootstrap+test.
- Changed option name to -fipa-bit-cp following Honza's suggestion
- Committed as r239769.
* TCWG-779 (4/10)
- Patch iterations based on upstream suggestions.
* Public Holiday (2/10)
* Misc (2/10)
- Background reading on mod/ref analysis
- Meetings
# Progress #
* TCWG-685, GDB 7.12 release. [4/10]
Finish all native testing on ARM. Triaged tests result. Only find
one fail that test assumes HW watchpoint is always available.
Reported it upstream, but need more thoughts on how to fix it.
Both AArch64 and ARM GDB is in a good state, in terms of test results.
* TCWG-533, Remove global variable arm_override_mode. [2/10]
It is paused by 7.12 release, and work on it again. 10 patches are
ready. Being regression tested.
* Analyse the kernel behaviour on single step over fork. [4/10]
Upgrade juno kernel to 4.7.0-rc4+, and verified Will Deacon's patch.
http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/451711.ht…
With the patch, GDB can correctly single step over fork, however,
GDB is still broken if there is a breakpoint. Write a small
reproducer, but doesn't trigger the problem. It might be a GDB bug
or kernel bug.
# Plan #
* Resume works interrupted by 7.12 release.
--
Yao Qi
== Progress ==
- Got back from Sabbatical and caught up with email/events
- TCWG-610 Support for ARM Exceptions in lld.
Implemented support for SHF_LINK_ORDER and .ARM.exidx in lld, have
this working and tested for
images (both with default and linker scripts) and relocatable ld -r
with the default layout. Currently it looks like relocatable outputs
with linker scripts aren't working at all right now.
== Plan ==
- Hope to send to upstream review next week.
- Write the first pass of the LLVM Cauldron presentation.
== Planned absence ==
Monday 29th August is UK national holiday
== Progress ==
* [AArch64] Support for label arithmetic in the assembler [TCWG-710] [9/10]
- Patch in upstream review
- While adding more tests for the patch above, I noticed that we're not
encoding the lsl #12 on add/sub immediates correctly
- Submitted a patch to fix that as well
* Misc [1/10]
- Ran more precommit tests for last week's reverted revisions
== Plan ==
* Handle special cases in AArch64InstrInfo::GetInstSizeInBytes [TCWG-757]
* Two days off [4/10]
# Progress #
* TCWG-685, GDB 7.12 release. [3/10]
Fix one bug that AArch64 GDB doesn't recognize new "STP with base register"
instruction in prologue. Recent GCC
https://gcc.gnu.org/ml/gcc-patches/2016-07/msg01933.html
starts to generate that instruction in prologue. Fix it in both
master and 7.12.
Successfully build armhf toolchain with latest gcc/glibc. Run GDB
tests with the new toolchain. Test results are OK, except fails when
tests are compiled with -march=cortex-a15. It isn't a release
blocker. Open TCWG-756 for it and will look into these fails later.
* GDBserver build failure. [1/10]
Review the patch fixing GDBserver build failure with latest glibc.
Patch is OK, but make sure it can be merged to master/7.12/7.11, as
we are still using GDB 7.11.
* Prelink. [1/10]
prelink causes some GDB tests failures, so I look at it. prelink
isn't active, because I can't see any mails in archive since 2013.
ARM is supported, but AArch64 isn't.
* Misc, [1/10].
Set up email 2fa.
# Plan #
* GDB 7.12 release.
* Upgrade the linux kernel on my juno board.
--
Yao Qi
== Progress ==
* LLVM 3.9.0 Release for AArch64 [TCWG-696] [1/10]
- Ran the tests for RC2, everything looks good on AArch64
* [AArch64] Support for label arithmetic in the assembler [TCWG-710] [3/10]
- This is starting to look like a patch, but I need to add more tests
* Buildbot babysitting [TCWG-716, 719, 720] [5/10]
- Bisected a number of failures and reverted some patches
- Ran precommit tests for 2 different issues; one of them has passed with the
author's fix, the other one hasn't, so I'll probably have to help figure out
what the problem is
* Set up a BeagleBoard so I can run some tests for TCWG-674 [1/10]
== Plan ==
* [AArch64] Support for label arithmetic in the assembler [TCWG-710]
- Send a patch upstream
* Run more precommits if necessary
