RFR: 8303040: linux PPC64le: Implementation of Foreign Function & Memory API (Preview) [v3]

[Martin Doerr]

On Mon, 6 Mar 2023 16:38:37 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

>> @JornVernee: Thanks a lot for your detailed review! I have quite a few TODOs which include:
>> - Include my tests for the HFA corner cases.
>> - Try to improve handling of the overlapping registers as you suggested.
>> - Check nesting of HFA.
>> 
>> There will surely be more when looking into Big Endian support after merging with your recent work on https://github.com/openjdk/panama-foreign/compare/foreign-memaccess+abi...JornVernee:panama-foreign:OOB
>> We should get rid of oversized accesses on PPC64, too.
>> Thanks for sharing your plans to intrisify `linkToNative` in C2 later. I guess we should do more preparation work on all platforms when that gets addressed.
>
> @TheRealMDoerr I've moved the support for structs/unions that are not a power of 2 in size to this repo, so you should be able to merge the master branch to get it now.

@JornVernee: Thanks! I've merged in your changes. TestArrayStructs is not yet completely working. I will need to investigate. I think I've done most other things you had requested. You may want to take a look at my recent commits.

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PR: https://git.openjdk.org/jdk/pull/12708