RFR: 8299683: [S390X] Problems with -XX:+VerifyStack [v2]

[Martin Doerr]

On Wed, 1 Feb 2023 16:24:59 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> I have tried that using same offset from above instead current one but it's not  pointing to correct PC for oop Maps.
>
> Setting last_Java_pc = pc() + current offset looks weird. Could it be that this breaks something which prevents the failure from happening? E.g. pointing to somewhere outside the deopt blob?

I think you can't use this get_PC version for the intended purpose. It doesn't set Z_RET = start pc + offs which is what you probably wanted.

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PR: https://git.openjdk.org/jdk/pull/12161