[riscv-port-jdk17u:riscv-port] RFR: 8293100: RISC-V: Need to save and restore callee-saved FloatRegisters in StubGenerator::generate_call_stub [v2]

[Ludovic Henry]

On Wed, 1 Mar 2023 05:38:17 GMT, Gui Cao <gcao at openjdk.org> wrote:

>> Please review this backport to riscv-port-jdk17u. Backport of [JDK-8293100](https://bugs.openjdk.org/browse/JDK-8293100).
>> The original patch cannot be directly applied because of the line number, but there are no other additional changes.
>> 
>> Testing:
>> 
>> - vmTestbase/nsk/stress/jni/jnistress002.java passed on qemu and unmacthed.
>> - all tier1 passed on unmacthed (release).
>
> Gui Cao has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains one commit:
> 
>   backport JDK-8293100

Marked as reviewed by luhenry (no project role).

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PR: https://git.openjdk.org/riscv-port-jdk17u/pull/4