RFR: 8330094: RISC-V: Save and restore FCSR in the call stub

[Hamlin Li]

Hi,
Can you help to review this patch?
As discussed at https://github.com/openjdk/jdk/pull/17745#discussion_r1558783467, we should do the similar thing as [JDK-8319973](https://bugs.openjdk.org/browse/JDK-8319973) on aarch64.
Thanks!

Tests running ...

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Commit messages:
 - remove csrwi(..., rne)
 - Initial commit

Changes: https://git.openjdk.org/jdk/pull/18758/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18758&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8330094
  Stats: 26 lines in 3 files changed: 13 ins; 9 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/18758.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18758/head:pull/18758

PR: https://git.openjdk.org/jdk/pull/18758