8350398: [s390x] Relativize initial_sp/monitors in interpreter frames

[offamitkumar]

s390x port for JDK-8315966.

This PR depends on #23660 because index calculation macro will be added by that PR, which is being used by this one.

// Frame slot index relative to fp
#define _z_ijava_idx(_component) \
        (_z_ijava_state_neg(_component) >> LogBytesPerWord)

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Progress

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Issue

• JDK-8350398: [s390x] Relativize initial_sp/monitors in interpreter frames (Enhancement - P4)

Reviewing

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https://git.openjdk.org/jdk/pull/23708.diff

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