[llvm-dev] ASan port for Myriad RTEMS

[Walter Lee via llvm-dev]

Hi Jake.  Thanks for the info.  Where can I keep up to date on the
symbolizer status?

Our symbolizer is provided by the Myriad vendor and integrated into its
host test environment.  It doesn't do much: just look for PC string
patterns and symbolize them using addr2line.

Thanks,

Walter

On Fri, May 4, 2018 at 5:36 PM Jake Ehrlich <jakehehrlich at google.com> wrote:

> Hey,

> I work on fuchsia symbolizer stuff. I don't know if you guys already have
an external symbolizer but I'm working on making one right now and I plan
on making one backed by LLVM that can be run host-side or target-side. I'd
like to contribute that back to llvm ideally. What do you guys have so far?
I have a prototype in golang that just spins up an instance of
llvm-symbolizer currently. It isn't fully functional at the moment and it
has some fuchsia specific stuff as well:
https://fuchsia.googlesource.com/tools/+/master/symbolize/ but it should
usable soon. The full spec we'd like to implement can be read here:
https://fuchsia.googlesource.com/zircon/+/master/docs/symbolizer_markup.md

> Best,
> Jake

> On Fri, May 4, 2018 at 2:00 PM Walter Lee via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

>> I have ported ASan in LLVM to Myriad RTEMS, and I would like to
>> upstream the port.  Below is the design doc.  Feedback welcome.


https://docs.google.com/document/d/1oxmk0xUojybDaQDAuTEVpHVMi5xQX74cJPyMJbaSaRM

>> The port is expected to work with modified versions of RTEMS and
>> newlib.  I have a git repo with changes to those projects, that I can
>> make available if there is interest.

>> Here is the patch series:
>> https://reviews.llvm.org/D46451 [asan] Add instrumentation support for
>> Myriad
>> https://reviews.llvm.org/D46452 [sanitizer] Don't add --export-dynamic
for
>> Myriad
>> https://reviews.llvm.org/D46453 [sanitizer] Add definitions for Myriad
>> RTEMS platform
>> https://reviews.llvm.org/D46454 [sanitizer] Trivial portion of the port
to
>> Myriad RTEMS
>> https://reviews.llvm.org/D46456 [asan] Add support for Myriad RTEMS
memory
>> map
>> https://reviews.llvm.org/D46457 [asan] Add a magic shadow value for shadw
>> gap
>> https://reviews.llvm.org/D46459 [asan] On RTEMS, checks for asan_inited
>> before entering ASan run-time
>> https://reviews.llvm.org/D46461 [asan] Set flags appropriately for RTEMS
>> https://reviews.llvm.org/D46462 [sanitizer] Allow Fuchsia symbolizer to
be
>> reused by Myriad RTEMS
>> https://reviews.llvm.org/D46463 [sanitizer] On RTEMS, avoid recursion
when
>> reporting Mmap failure
>> https://reviews.llvm.org/D46465 [asan] Port asan_malloc_linux.cc to RTEMS
>> https://reviews.llvm.org/D46466 [asan] Add AsanThread::Restart() to
support
>> thread restart
>> https://reviews.llvm.org/D46467 [asan] Add argument to allow fake stack
to
>> be initialized during thread init
>> https://reviews.llvm.org/D46468 [asan] Add target-specific files for
Myriad
>> RTEMS port
>> https://reviews.llvm.org/D46469 [sanitizer] Port fast stack unwinder to
>> sparcv8

>> Thanks,

>> Walter
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