RFR: 8377946: Use DWARF in mixed jstack on Linux AArch64 [v3]

[Yasumasa Suenaga]

> SA supports DWARF in jhsdb to unwind native call frames on Linux AMD64. It is better if DWARF is supported on other architectures. This RFE aims to implement it on AArch64.
> 
> This make a big change, so I assembled in 5 commits:
> 
> - Unify terminology to "sender"
>     - https://github.com/YaSuenag/jdk/commit/9cab52f778a678b283533fa2129bdec378111abb
>     - Several words ("next", "sender", no prefix) are used around frame related code in SA,
>       thus the commit unified to "sender" to follow manner in HotSpot.
> - Separate DWARF implementation from Linux AMD64
>     - https://github.com/YaSuenag/jdk/commit/6c90a74e507bc6cf7068b4d74ffded6d516e4865
>     - DWARF related code can be separate as platform-independent.
> - ~~DWARF parser improvement~~ **Done in [JDK-8377947](https://bugs.openjdk.org/browse/JDK-8377947)**
>     - ~~https://github.com/YaSuenag/jdk/commit/979eb7c0dc87c057fb1c0ca88c4ea217d04f09ca~~
>     - ~~Track all of registers' offset from CFA~~
>     - ~~Remember states when DWARF parser see `DW_CFA_restore_state` in each time~~
> - Use DWARF on AArch64
>     - https://github.com/YaSuenag/jdk/commit/b4bd2f3f372cfe2a796a558a4eeada0d57318067
> - Ignore PAC (PACA)
>     - https://github.com/YaSuenag/jdk/commit/8ad3ee82da34a3a6ff0407997904079cced5f9f3
>     - Ignore AArch64 specific DWARF instructions (`DW_CFA_AARCH64_negate_ra_state`, `DW_CFA_AARCH64_negate_ra_state_with_pc`, `DW_CFA_AARCH64_set_ra_state`)
>     - Mixed jstack might not work on PAC (Pointer Authentication Code) enabled platform (it is same with current SA) because SA does not decode PAC. We need to support it if possible (but I do not have PAC enabled Linux machines).
>     - And also this commit disables TestJhsdbJstackMixedCore.java on AArch64 because it does not work on Fedora 43 AArch64. PC (program counter) points out of function in some case because the another function begins immediately after the end of interest function. If the function ends with `bl`, PC points beginning of next function. (I confirmed that with assembly code generated by GCC 15)
> 
> 
> I tested this change on following platforms:
> - Fedora 43 AMD64
> - Oracle Linux 8.10 AMD64
> - Fedora 43 AArch64
> - Rocky Linux 9.5 AArch64
> 
> I tested serviceability/sa on each platforms. On Fedora 43 AArch64 on Raspberry Pi 4, TestJhsdbJstackMixedWithXComp.java timed out, but I believe it was caused by machine performance. I didn't see any warnings/errors on other platforms. In addition, my crash examples works fine with this change: https://github.com/YaSuenag/garak...

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

  Add comments and remove cfa() from DwarfCFrame.java

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/29731/files
  - new: https://git.openjdk.org/jdk/pull/29731/files/85d21b57..3c874237

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29731&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29731&range=01-02

  Stats: 16 lines in 3 files changed: 6 ins; 10 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/29731.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29731/head:pull/29731

PR: https://git.openjdk.org/jdk/pull/29731