[riscv-port-jdk17u:riscv-port] RFR: 8293474: RISC-V: Unify the way of moving function pointer

[Fei Yang]

On Wed, 5 Apr 2023 02:37:37 GMT, Dingli Zhang <dzhang at openjdk.org> wrote:

> Please review this backport to riscv-port-jdk17u.
> Backport of [JDK-8293474](https://bugs.openjdk.org/browse/JDK-8293474).
> The original patch cannot be directly applied because of https://github.com/openjdk/riscv-port-jdk17u/pull/32 , and there are no other additional changes.
> 
> Testing:
> - Tier1-3 passed without new failure on unmacthed (release).

Looks good. Thanks.

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Marked as reviewed by fyang (Committer).

PR Review: https://git.openjdk.org/riscv-port-jdk17u/pull/35#pullrequestreview-1373933956