8296959: Fix hotspot shell tests of 8u on multilib systems

[zzambers]

Few hotspot tests (from hotspot/tier1) currently fail for x86 (32-bit) builds on 64-bit system (Linux).

compiler/criticalnatives/argumentcorruption/Test8167409.sh 
runtime/jni/CallWithJNIWeak/test.sh 
runtime/jni/ReturnJNIWeak/test.sh

Problem:
Tests build 64-bit JNI libraries and trying to use them for 32-bit jdk, resulting in error:

Exception in thread "main" java.lang.UnsatisfiedLinkError: /home/runner/work/jdk8u-dev/jdk8u-dev/test-results/testoutput/hotspot_tier1/JTwork/scratch/libCNCheckLongArgs.so: /home/runner/work/jdk8u-dev/jdk8u-dev/test-results/testoutput/hotspot_tier1/JTwork/scratch/libCNCheckLongArgs.so: wrong ELF class: ELFCLASS64 (Possible cause: architecture word width mismatch)

These tests only target Linux and (some) Solaris.

Solution:
Fixed by supplying appropriate compiler argument (-m32) to build 32-bit libraries for 32-bit JDK. (Some tests already did that, but not in uniform way). I verified in manpage of gcc that -m32 argument is supported for all 32-bit variants of architectures supported by JDK 8 [1]. Solaris cc also seems to support -m32 [2].
This fix is JDK 8 only as newer JDK use new approach, where JNI test libraries are build are build system and tests not longer build them themselfs.

Testing:
Change fixed these tests on linux-x86. (tested here [3])
Tests are part of hotspot/tier1. This is one of problems, which needs to be fixed, so that hotspot/tier1 can be enabled in GHA on linux-x86. Other one is JDK-8295952 [4] (will need to get fixed and backported).

[1] https://man7.org/linux/man-pages/man1/gcc.1.html
[2] https://docs.oracle.com/cd/E37069_01/html/E54439/cc-1.html
[3] https://github.com/zzambers/jdk8u-dev/actions/runs/3441392968
[4] https://bugs.openjdk.org/browse/JDK-8295952

---

Progress

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Issue

• JDK-8296959: Fix hotspot shell tests of 8u on multilib systems

Reviewers

• Severin Gehwolf (@jerboaa - Reviewer)

Reviewing

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[bridgekeeper]

👋 Welcome back zzambers! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[mlbridge]

Webrevs

• 00: Full (1039ebcf)

[jerboaa]

Seems OK to me.

[openjdk]

@zzambers This change now passes all automated pre-integration checks.

After integration, the commit message for the final commit will be:

8296959: Fix hotspot shell tests of 8u on multilib systems

Reviewed-by: sgehwolf

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 3 new commits pushed to the master branch:

• 17fd40a: 8295714: GHA ::set-output is deprecated and will be removed
• 2f509c7: 8159599: [TEST_BUG] java/awt/Modal/ModalInternalFrameTest/ModalInternalFrameTest.java
• f6d869f: 8221529: [TESTBUG] Docker tests use old/deprecated image on AArch64

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

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[zzambers]

@jerboaa thank you for review
/integrate

[openjdk]

@zzambers
Your change (at version 1039ebc) is now ready to be sponsored by a Committer.

[jerboaa]

/sponsor

[openjdk]

Going to push as commit 7024bf0.
Since your change was applied there have been 3 commits pushed to the master branch:

• 17fd40a: 8295714: GHA ::set-output is deprecated and will be removed
• 2f509c7: 8159599: [TEST_BUG] java/awt/Modal/ModalInternalFrameTest/ModalInternalFrameTest.java
• f6d869f: 8221529: [TESTBUG] Docker tests use old/deprecated image on AArch64

Your commit was automatically rebased without conflicts.

[openjdk]

@jerboaa @zzambers Pushed as commit 7024bf0.

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