Progress:
* v7 mach-virt upstreaming:
** implemented architected timer support for TCG, sent patches
** nearly finished cleanup of mach-virt including adding virtio support
** ran into an odd bug where putting RAM not at address zero results in
the kernel not booting -- need to debug
** once that is fixed should just need to do final testing and send patches
Plans:
* look at OVS' v2 a8-kvm-support patches
-- PMM
== Progress ==
* Libssp support for AArch64 TCWG 23
Discussed with Matt and decided to assume "glibc" will export canary
guard variable in TCB, for aarch64.
It will export it as global variable for 32 bit. Working on top of
Christophe patch that make frame grows downward.
* Look at builtin return address behavior in the absence of frame pointer.
For X86_64 usage if __builtin_return_address(n) n>0 and
-fomit-frame-pointer results in undefined behavior.
In Ubuntu 12.04 the native GCC 4.7.1 resulted in segmentation fault
on x86_64 machine for such a test.
Currently planning to close this as undefined behavior in aarch64 as well.
Discussing with Marcus on this.
* TCWG-20 gprof support patches.
Re based with latest trunk and regression tested.
http://gcc.gnu.org/ml/gcc-patches/2013-07/msg01352.htmlhttp://gcc.gnu.org/ml/gcc-patches/2013-07/msg01333.html
Misc
* Tuesday spent on Internal (AMD) work.
== Plan ==
* Continue Libssp support for AArch64 TCWG-23
* Update review comments and upstream gprof patches
==issues==
* LTO/PGO work stopped now since libssp support priority is more.
== Progress ==
* Completed initial investigation on catch syscall support on arm TCWG-182.
* Looked into dwarf assembler to generated architecture independent
debug information for dwarf2 test cases.
* Resolved some gdb.mi configuration issues due to which some test
cases were failing.
* Review status of GDB testing on arm and filled up JIRA with proposed
future work.
== Plan ==
* Continue work on gdb catch syscall support for arm TCWG-182.
* Background task: Understanding dwarf assembler to generate dwarf2
debug information for architecture test cases.
* File UK visa for meetings in September after receiving invitations.
== Progress ==
* Produced spec2000 benchmark data on panda for fsf-4.7, fsf-4.8,
gcc-linaro-4.7, and gcc-linaro-4.8.
* Helped Charlie get stared with building the toolchain.
* Found "experimental" option that got crosstool-ng actually working.
* Got cbuildv2 now doing much of the process crosstool-ng does for
a complete stage1 build.
* Improved native and cross toolchain builds via cbuildv2.
== Plans ==
* Continue working on cbuildv2 till it's usable by others.
* Looks like I have a pile of new wiki pages to write.
== Progress ==
* Induction and set up work environment
* Started investigating how to build gcc cross compilers, so that it can be
documented clearly [TCWG-190 <http://cards.linaro.org/browse/TCWG-190>]
* I can build a working arm-none-linux-gnueabi crosscompiler, and
understand each of the steps involved
* Using the same method, aarch64-none-linux-gnu does not build
== Issues ==
* None
== Plan ==
* Write up knowledge gained so far
* Find out why aarch64 doesn't work
* Find out more about other build variations (multilib/multiarch etc) and
how that affects what I've done so far
== Progress ==
* Backported aarch64 string functions and ARM gcc 4.8 fix in eglibc.
* Released eglibc 2.17 2013.07-2.
* Forward ported binutils AArch64 IFUNC patches to HEAD so Marcus can test them.
* Closed stack guard JIRA card and made a new one for pointer guard.
* More malloc benchmarking, reading etc.
* Started work on malloc code.
* Booked flights for LCU13!
== Issues ==
* None.
== Plan ==
* Deal with any test feedback on IFUNC patches.
* malloc
--
Will Newton
Toolchain Working Group, Linaro
== Progress ==
* Looking at 64-bit divmod on two fronts:
- Clean, but intrusive on target-independent code
- Dirty and duplicated, but restricted to target-specific code
* Long discussion about the purpose of the IR on the LLVMLinux list
* Watching some GNU Caldron videos
== Plan ==
* Continue looking at divmod for 64-bit values
* Start investigating cross-compilation issues
* When Rob is ready, have a look at CBuild2 for LLVM+Benchmarks
Progress:
* started on getting v7 mach-virt into shape for upstreaming:
doesn't currently work on TCG due to missing architected timers emulation
* sent fixes for some minor bugs in virtio-mmio noticed by reviewers
* support for various people for "I tried to boot linux in QEMU/KVM
and nothing happens" issues. This is usually because of a misconfigured
kernel which is either not sending serial output to the right place
or stopped with an error before the point where serial is set up.
However it's pretty awkward for users to debug especially compared
with x86 which doesn't generally have these issues because all x86
hardware is sufficiently the same that console and/or earlyprintk
just about always works.
* started the conversation on kvmarm about what the CPU in a KVM VM
ought to look like (always same as host? always an A57? always some
"generic VM CPU"? do we care (does the OS care?) that it has a GICv2
when the same CPU in h/w has a v3)
* came up with a clever hack for making QEMU QOM object struct fields
be only accessible to the object's implementation and not its users,
using gcc's "deprecated" attribute and some CPP macros.
-- PMM
