[11u] RFR: 8213845: ARM32: Interpreter doesn't call result handler after native calls

[Christoph Göttschkes]

Gentle reminder.

On 3/23/21 9:49 AM, Christoph Göttschkes wrote:
> Hi,
> 
> please review this backport of JDK-8213845 to 11u:
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8213845
> Original commit: https://hg.openjdk.java.net/jdk/jdk/rev/2d795829f39f
> 
> Webrev: https://cr.openjdk.java.net/~cgo/8213845/webrev.11u.00/
> 
> This patch fixes the conversion between C and Java boolean types, which value is
> not 0 or 1 in C on aarch32. This also fixes the test case
> "runtime/BoolReturn/JNIBooleanTest.java", which is testing this conversion.
> 
> The backport is not clean, because in 11u, the arm64 CPU type is still present.
> Adjusting the backport was fairly straight forward. Because of the arm64 CPU type,
> there are some additional #ifdef present and the changes had to be incoporated
> into the arm64 port as well. No additional changes have been made, only slight
> adjustments.
> 
> I am not able to test the arm64 port, since it doesn't compile anymore and I don't
> know if this CPU type is still supported, or if the code remains there because it
> is deemed to complicated to remove it.
> 
> Tested:
>   * Hotspot tier1 on linux aarch32
>   * Hotspot tier1 on linux aarch32 with -XX:+VerifyOops and -Xcheck:jni
>   * Hotspot tier1 on linux ARMv7-A
> 
> Thanks,
> Christoph
>