RFR: 8305668: PPC: Non-Top Interpreted frames should be independent of ABI_ELFv2

[Richard Reingruber]

On Wed, 12 Apr 2023 17:05:46 GMT, Tyler Steele <tsteele at openjdk.org> wrote:

> Interesting. I see no such failure on AIX either on my VThread branch, or when checking this PR out directly. I am currently running on Linux/Power to see if I can confirm that I see the failure there.
> 
> I don't see any failures in BasicExt.java on my aix/vthread branch with these and other changes (most notably the PollsetPoller implementation).

[`VMContinuations` are disabled on AIX](https://github.com/openjdk/jdk/blob/bc15163386659bfd549576817b4efe7307261ea8/src/hotspot/cpu/ppc/globals_ppc.hpp#L59). Have you changed that line?
BasicExt.java is otherwise skipped because [it requires continuations](https://github.com/openjdk/jdk/blob/bc15163386659bfd549576817b4efe7307261ea8/test/jdk/jdk/internal/vm/Continuation/BasicExt.java#L28).
If you run it standalone (w/o jtreg) you should get an `UnsupportedOperationException`

I'm planning to disable `VMContinuations` on PPC big endian platforms for now. This will help testing changes like this pr.

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PR Comment: https://git.openjdk.org/jdk/pull/13372#issuecomment-1505856926