RFR: 8366811: [leyden] Expose nmethod AOT entry in VMStructs

[Aleksey Shipilev]

On Wed, 3 Sep 2025 14:37:16 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> This is needed for external tools like async-profiler to disambiguate the frames that are executed with nmethod from AOT.  I have an async-profiler branch that is able to access this and give us interesting flamegraphs. So I am sure this thing works.
> 
> Additional testing:
>  - [x] Linux x86_64 server fastdebug, `runtime/cds`

Thanks! Basic tests have finished in GHA, so I am integrating.

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PR Comment: https://git.openjdk.org/leyden/pull/94#issuecomment-3250025053