RFR: 8267235: [macos_aarch64] InterpreterRuntime::throw_pending_exception messing up LR results in crash [v2]

[Vladimir Kempik]

> Please review this patch for call_VM_Base routine.
> it's expected there the LR is callee-saved register, but it's not on aarch64.
> when InterpreterRuntime::throw_pending_exception is tail-call optimized,
> the last subroutine before return is pthread_jit_write_protect_np which pac-sign LR.
> It can only be reproduced in macos 11.4beta (just run J2Ddemo ) but in fact affects every aarch64 build.

Vladimir Kempik has updated the pull request incrementally with one additional commit since the last revision:

  Update the fix

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4115/files
  - new: https://git.openjdk.java.net/jdk/pull/4115/files/5b7c4cec..edea0a61

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4115&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4115&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 2 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4115.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4115/head:pull/4115

PR: https://git.openjdk.java.net/jdk/pull/4115