RFR: 8362250: ARM32: forward_exception_entry missing return address [v2]

[Boris Ulasevich]

> The ARM32 ForwardExceptionNode codegen needs to set the exception address to R5. And, since the https://github.com/openjdk/jdk/pull/20437 change, the TailCall generator does not need this because the StubRoutines::forward_exception_entry function is not called there.

Boris Ulasevich has updated the pull request incrementally with one additional commit since the last revision:

  adjust ad rules format

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Changes:
  - all: https://git.openjdk.org/jdk/pull/26312/files
  - new: https://git.openjdk.org/jdk/pull/26312/files/023c2216..fd61008b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26312&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26312&range=00-01

  Stats: 4 lines in 1 file changed: 1 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/26312.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26312/head:pull/26312

PR: https://git.openjdk.org/jdk/pull/26312