RFR: 8371194: serviceability/sa/TestJhsdbJstackMixedWithXComp.java failing

[Yasumasa Suenaga]

On Thu, 13 Nov 2025 08:15:38 GMT, Yasumasa Suenaga <ysuenaga at openjdk.org> wrote:

> We've fixed mixed mode jstack for the debuggee running with `-Xcomp` in [JDK-8370176](https://bugs.openjdk.org/browse/JDK-8370176), but it was not enough. We need to handle like unifying `CFrame` and `Frame` in stack unwinding as possible, and need to change how to get caller SP/FP from stack.
> 
> This PR works fine on both Linux AMD64 and Linux AArch64. All of `hotspot/jtreg/serviceability/sa` tests have been passed on both platforms.
> 
> Big thanks to @pchilano for your help!

This PR is for Linux, other platforms (Windows, Mac) would not work. However I think it is not a problem because Windows and Mac has not been supported mixed jstack originally.

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PR Comment: https://git.openjdk.org/jdk/pull/28284#issuecomment-3527677564