RFR: 8283689: Update the foreign linker VM implementation [v7]

[Jorn Vernee]

On Tue, 10 May 2022 18:44:01 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

>> Jorn Vernee has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 21 commits:
>> 
>>  - Merge branch 'foreign-preview-m' into JEP-19-VM-IMPL2
>>  - Remove unneeded ComputeMoveOrder
>>  - Remove comment about native calls in lcm.cpp
>>  - 8284072: foreign/StdLibTest.java randomly crashes on MacOS/AArch64
>>    
>>    Reviewed-by: jvernee, mcimadamore
>>  - Update riscv and arm stubs
>>  - Remove spurious ProblemList change
>>  - Pass pointer to LogStream
>>  - Polish
>>  - Replace TraceNativeInvokers flag with unified logging
>>  - Fix other platforms, take 2
>>  - ... and 11 more: https://git.openjdk.java.net/jdk/compare/3c88a2ef...43fd1b91
>
> src/hotspot/cpu/aarch64/frame_aarch64.cpp line 379:
> 
>> 377:   // need unextended_sp here, since normal sp is wrong for interpreter callees
>> 378:   return reinterpret_cast<OptimizedEntryBlob::FrameData*>(
>> 379:     reinterpret_cast<char*>(frame.unextended_sp()) + in_bytes(_frame_data_offset));
> 
> Maybe use `address` instead of `char*`?

Ok. I think I used `char*` to try and avoid a potential strict-aliasing violation, but I don't think we compile with that turned on any ways.

Will change it to `address` (for x86 too)

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PR: https://git.openjdk.java.net/jdk/pull/7959