RFR: 8339416: [s390x] Provide implementation for resolve_global_jobject [v3]

[Amit Kumar]

> This PR provides "resolve_global_jobject" method implementation for s390x-port. 
> 
> Testing:
> * Tier1 test with Fastdebug; 
> * Added these changes on top of https://github.com/openjdk/jdk/pull/20479 and modified the call in the stubGenerator_s390.cpp file; 
> *  1. Ran tier1 test with a call to  "resolve_jobect"
> *  2. Ran tier1 test with a call to  "resolve_global_jobject" 
> 
> I didn't see any new failure appearing there.

Amit Kumar has updated the pull request incrementally with one additional commit since the last revision:

  implements ModRefBarrierSetAssembler::resolve_jobject

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/20986/files
  - new: https://git.openjdk.org/jdk/pull/20986/files/95a832e4..25d9e9bc

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20986&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20986&range=01-02

  Stats: 21 lines in 3 files changed: 16 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/20986.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20986/head:pull/20986

PR: https://git.openjdk.org/jdk/pull/20986