RFR: 8377947: Test serviceability/sa/TestJhsdbJstackMixedCore.java failed on linux-x64 [v2]

[Yasumasa Suenaga]

> This PR is extracted from #29731 .
> 
> We saw following mixed jstack in TestJhsdbJstackMixedCore.java and then it failed due to unsatisfied condition.
> 
> 
> ----------------- 3258804 -----------------
> "main" #3 prio=5 tid=0x00007f497802e450 nid=3258804 runnable [0x00007f4982c74000]
>    java.lang.Thread.State: RUNNABLE
>    JavaThread state: _thread_in_native
> 0x00007f49826dc5ef __GI_raise + 0x10f
> 0x00007f49826afe65 __GI_abort + 0x127
> 0x00007f497fdec90f os::abort(bool, void const*, void const*) [clone .cold] + 0x4
> 0x00007f498175d582 VMError::report_and_die(int, char const*, char const*, __va_list_tag*, Thread*, unsigned char*, void const*, void const*, char const*, int, unsigned long) + 0x6f2
> 0x00007f498072e3c0 report_vm_error(char const*, int, char const*, char const*, ...) + 0x100
> 0x00007f497fe5bb5f CompressedKlassPointers::decode_not_null(unsigned int) + 0x22f
> 0x00007f4982c72010 ????????
> 
> 
> "????????" was shown because `DW_CFA_restore` is not supported in `DwarfParser`.
> This PR implements `DW_CFA_restore`, and also implements `DW_CFA_restore_state` and `DW_CFA_restore` correctly using `stack`.

Yasumasa Suenaga has updated the pull request incrementally with one additional commit since the last revision:

  Should not initialize state in DW_CFA_remember_state

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/29779/files
  - new: https://git.openjdk.org/jdk/pull/29779/files/3e8b811c..5d022420

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29779&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29779&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/29779.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29779/head:pull/29779

PR: https://git.openjdk.org/jdk/pull/29779