Integrated: 8304888: Add dedicated VMProps for linker and fallback linker

[Jorn Vernee]

On Tue, 11 Apr 2023 17:28:06 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

> This patch adds a dedicated jtreg property to check which CABI is being used by the JDK, which can be used both to check whether the foreign linker is supported, and whether the fallback linker is being used. (and, possibly it can also be use to check for a particular ABI in case we want to add ABI specific tests).
> 
> Checking whether the foreign linker is supported currently requires using an unwieldy expression that checks if we are running on a platform that has a foreign linker port. Checking for the fallback linker currently uses `vm.flavor != "zero"` which is not always correct, since the fallback linker can also be used on other platforms which are not `zero`.
> 
> To initialize the property, VMProps directly reads `jdk.internal.foreig.CABI::current()`. Since this class is in an internal package, `--add-exports` flags are added as javac flags and VM flags for the extra prop definitions class.

This pull request has now been integrated.

Changeset: a8bf2acb
Author:    Jorn Vernee <jvernee at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/a8bf2acb7db63b508ef169e42a27b9c99178cbb1
Stats:     129 lines in 50 files changed: 41 ins; 8 del; 80 mod

8304888: Add dedicated VMProps for linker and fallback linker

Reviewed-by: alanb, mcimadamore

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PR: https://git.openjdk.org/jdk/pull/13429