Hi,
I start to use Linary AArch64 toolchain recently and just joined this maillist. I went through some of the archived threads but didn't read all of them. So bear me if I'm asking dumb question or old question which had been answered before.
For our use case, we are running the gdb client at early state of boot. So the ARMv8 target might be running into any EL and into either AArch64 or AArch32 state. My questions are:
1) Is the aarch64-none-elf-gdb.exe good for both AArch64 and AArch32 or I have to run the arm-none-eabi-gdb.exe if the target running in AArch32 state?
2) If the target is in AArch64 state, can I use the aarch64-none-elf-gdb.exe to load binary built for AArch32 to the target?
I'm really appreciated if anybody can help me on these two questions.
Thanks in advance,
StrongQ
cbuild2 benchmarking - TCWG-360 [3/10]
* A few small enhancements and bug-fixes
* Tried to run spec2006 on Juno, looks tricky
libm profiling - CARD-1693 [3/10]
* Pulled together lapack + blas
* Looked a bit at how it exercises libm on x86
* Tried to look at how it exercises libm on Juno, looks tricky
Meetings/mail/etc [4/10]
* Featuring some fun with backups and ARM performance review season
=Plan=
* cbuild2 benchmarking - keep chipping away at spec/juno
* libm profiling - attempt to assemble an AArch64 setup that works for me
* further performance review/corporate admin will take up extra time
this week, but should then fall back to normal levels
=Issues=
State of the setup on our Junos
== Progress ==
* Part way through integrating Cbuild2/Jenkins with Gerrit. (#1692,
8/10)
- Implemented functions to use the REST API to Gerrit via SSH.
- Integrated into build and test processes.
* Meetings and Misc (2/10)
- Ordered 10 Snapdragon boards
== Plan ==
* Finish Gerrit integration with Cbuild2 and Jenkins. (#1692)
- Find a way the buildslave user can use the SSH connection to Gerrit.
* Start merging the linaro branch in DejaGnu to master to get
ready for the next release.
* Start getting ready for the lab move, do what I can ahead of time.
== Issues ==
* Gerrit comments via REST strip out all newlines, so I need to
limit the message size after a test run.
= Progress ==
* Core mark benchmark and report for PGO and PGO + LTO (TCWG-544) (6/10)
Going by CPU cycles adding LTO gains in x86 and degrades in Aarch64 .
Looked at hot functions and examining assembly the code generation seems to
be same. X86_64 does alignment of code. Also branch misses decreased in
X86_64 compared to Aarch64 with -flto + -O3.
Also profiled for instruction counts on Aarch64 with linaro compiler. These
profiles say that we are executing less instructions with LTO and PGO for
Aarch64.
* PR 63173- Reproduced the issue and changed the test case to work with
trunk. Now Looks like someone else has a patch for it. (1/10). so will
work on other bugs.
* Misc [3/10]
Internal work, emails, AMD meetings and 1-1 with inline manger.
1-1 with Maxim, christophe and 1-1 with ryan
== Plan ==
* Coremark benchmark and profiling.
Investigate trunk degradation for O3+ PGO + LTO and report.
== leaves ==
Diwali holiday (22-24)
== Issues ==
* Still no network at home and will not be fixed before at least one week :(
== Progress ==
* GCC 4.9 2014.10 (8/10)
- Merged FSF 4.9 branch
- Released Linaro 4.9 2014.10
* Misc: (2/10)
- Various meetings.
== Plan ==
* Analyse some failures that occur only in --enable-release.
== Progress ==
Catch up with work after return from Eid ul Adha and Annual Holidays [7/10]
* Hong Kong visa application
* UPS repairs and office cleanup
* Catching up with work, gdb roadmap and open/running cards.
* Emails/Patch scrolling/Meetings etc
* Sick day off on Monday
GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480] [3/10]
* Getting re-synced with code where I left.
== Plan ==
Further progress on GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480]
Investigate possibility of AArch64 trace-point work without
availability of hardware.
Check for GDB status on ARM and AArch64 vs x86.
== Progress ==
* Zero/sign extension elimination with widening types (TCWG-546 - 9/10)
- Fixed ICEs and now can build the cross compiler and do the regression
testing with qemu
- some test-cases are failing due to condition that rely on overflow;
this need fixing.
- Bootstrapping on AArch64 still fails (but much later than previously).
- Verified CRC is optimized
* Improve block memory operations by GCC (TCWG-142 - 1/10)
- Looked at the changes since the card was drafted
== Plan ==
* Continue with Zero/sign extension pass.
== Progress ==
* GCC trunk/4.9 validation (CARD-647) (3/10)
- committed testsuite patch to test if -shared is supported
- forcing -mword-relocations flags when compiling testglue works on
my Ubuntu machines, but does not in the Compute Farm RHEL5 servers.
- investigating why, all the more as it made me incorrectly report
failures in the 4.9 branch
* Validation (2/10)
- compared cbuild2 schroot-test branch and master
the results of this manual run does not seem to match Jenkins results
* Neon intrinsics tests (1/10)
- fixed .exp harness to support parallelization
- looking at how to pre-support fp16, will probably skip it for now,
and add dedicated tests later
* AArch64 sanitizer (1/10)
- GCC trunk seems to need to cherry pick a sanitizer patch when
building using recent kernel headers
- tried to use Jenkins to build trunk and trunk+cherry-pick, but the
results are not consistent
needs more investigation
* Misc (3/10)
- calls, meetings, irc
== Next ==
* GCC trunk/4.9 cross-validation
- fix -mword-relocations support
- investigate abi_check test
* AArch64 sanitizer
* Neon intrisics tests update
* cbuild2:
- analyze previous results (mostly check the logs....)
- look at backport-test script + logs
Short next week: off Wednesday/Thursday
