RFR: 8286302: Port JEP 425 to PPC64 [v2]

[Richard Reingruber]

On Fri, 4 Nov 2022 17:50:16 GMT, Tyler Steele <tsteele at openjdk.org> wrote:

>> Richard Reingruber has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Use callers_sp for fsize calculation in recurse_freeze_interpreted_frame
>
> src/hotspot/cpu/ppc/sharedRuntime_ppc.cpp line 1694:
> 
>> 1692: #ifdef ASSERT
>> 1693:   __ load_const_optimized(tmp2, 0x1234);
>> 1694:   __ stw(tmp2, in_bytes(ContinuationEntry::cookie_offset()), R1_SP);
> 
> Would it be appropriate to call ContinuationEntry::cookie_value() here instead?

Done

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PR: https://git.openjdk.org/jdk/pull/10961