AIX does not implement the dladdr C runtime library call, instead a custom implementation has been introduced in the JDK and VM sources, this is ugly and should be removed as discussed in this thread.
https://mail.openjdk.org/pipermail/build-dev/2016-September/thread.html#17744

https://github.com/openjdk/jdk/tree/master/src/java.base/aix/native/libjli