This PR is in reference to porting LLDB on AIX. Link to discussions on llvm discourse and github: 1. https://discourse.llvm.org/t/port-lldb-to-ibm-aix/80640 2. https://github.com/llvm/llvm-project/issues/101657 The complete changes for porting are present in this draft PR: https://github.com/llvm/llvm-project/pull/102601 Details: -------------- Adding PlatformAIX plugin for a basic lldb build support. The 1st commit is the original version as in the draft PR which is a PlatformLinux copy. I have removed some of the code in the next commits. Please let me know all the other changes required to push the PlatformAIX changes and avoid any duplication.