[jdk20u] RFR: 8305668: PPC: Non-Top Interpreted frames should be independent of ABI_ELFv2

[Tyler Steele]

On Thu, 25 May 2023 16:00:30 GMT, Tyler Steele <tsteele at openjdk.org> wrote:

> I would like to backport this change in order to bring my VThread changes to jdk20u. My changes depend on this one.
> 
> Much of the line count of this change is from renaming. However, this change isn't 'just' a renaming. The core of the changes come from `frame_ppc.hpp` with the removal of `jit_abi`. Both Java and C frames had their own C-frame structure and Java's was not completely correct for the big endian ABI. These changes point both Java and C frame structures to a common ABI.
> 
> The backport did not apply cleanly--but only due to differences in the copyright header years.

The changes have been approved in the JBS.

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PR Comment: https://git.openjdk.org/jdk20u/pull/83#issuecomment-1577013336