RFR: 8281061: [s390] JFR runs into assertions while validating interpreter frames [v2]

[Martin Doerr]

> s390 implementation requires small changes to avoid running into assertions in debug builds. See JBS for details.

Martin Doerr has updated the pull request incrementally with one additional commit since the last revision:

  Fix istate in stack range check.

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7312/files
  - new: https://git.openjdk.java.net/jdk/pull/7312/files/f491da86..934e13c0

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7312&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7312&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7312.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7312/head:pull/7312

PR: https://git.openjdk.java.net/jdk/pull/7312