RFR: 8339359: RISC-V: Use auipc explicitly in far_jump and far_call macro assembler routines [v2]

[Fei Yang]

> Previous discussion: https://github.com/openjdk/jdk/pull/18942#issuecomment-2109162337
> 
> For MacroAssembler::far_call and MacroAssembler::far_jump, I would suggest we use explicit
> auipc instead of MacroAssembler::la for them as the destination is ensured to be in code cache.
> This will help save unnecessary check in MacroAssembler::la and make the code more consistent.
> Also this will help distinguish these two macro assembler routines from MacroAssembler::rt_call
> 
> Testing:
> - [x] release & fastdebug builds
> - [x] Tiered 1-3 tests

Fei Yang has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Fix assertion message
 - Merge remote-tracking branch 'upstream/master' into JDK-8339359
 - 8339359: RISC-V: Use auipc explicitly in far_jump and far_call macro assembler routines

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/20805/files
  - new: https://git.openjdk.org/jdk/pull/20805/files/95b69ff0..8c426ff9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20805&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20805&range=00-01

  Stats: 984 lines in 25 files changed: 159 ins; 731 del; 94 mod
  Patch: https://git.openjdk.org/jdk/pull/20805.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20805/head:pull/20805

PR: https://git.openjdk.org/jdk/pull/20805