Is there any plan for arm32/64?

[alhah]

It's a very good job, I'm interesting in speeding up unwind for the profiling of android app performance.Do you have plan to port it onto arm & aarch64?

[tobast]

Thank you! :)

Sadly, there is no plan to port this work to those architectures — I mostly see this repository as a real-world-compatible working prototype associated with this research article, but it should definitely be re-implemented cleanly if it is to be really used. In particular, the x86_64 architecture is hard-coded.

This being said, I believe it should not be too hard to port this code to ARM/aarch64. The code is mostly generic, and (as far as I remember) only specific register IDs are hard-coded (eg %rsp, …) and should be replaced with their eg. ARM counterparts. However, to get a fully working profiling toolchain, you would also need to adapt the ARM-specific part of libunwind to use eh_elfs, as done in this repo for x86_64 (most of the work, once again, is architecture-agnostic, but some architecture-specific work has to be done).