RFR: 8256857: ARM32 builds broken after JDK-8254231 [v4]

[Thomas Stuefe]

On Tue, 24 Nov 2020 09:16:14 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Foreign linker broke ARM32 builds. This change stubs out the new entry points, without implementing the actual support yet.
>> 
>> Additional testing:
>>  - [x] Linux arm fastdebug cross-compilation
>
> Aleksey Shipilev has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains seven additional commits since the last revision:
> 
>  - Fix the runtime error as well: stub out _linkToNative
>  - Merge branch 'master' into JDK-8256857-arm-foreign
>  - Merge branch 'master' into JDK-8256857-arm-foreign
>  - Use nullptr instead
>  - Add debug.hpp include as well
>  - 8256857: ARM32 builds broken after JDK-8254231
>  - 8256857: ARM32 builds broken after JDK-8254231

LGTM

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Marked as reviewed by stuefe (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/1383