As you may know, SAP HANA studio and client were released.
It is good news for using old 32 bit OS developer, this release version of SAP HANA client tool contained regi dev tools. So developer can develop XS engine project base on 32bit OS.
It did not contain regi tool in passed revision of HANA client for 32bit OS, it only supports 64bit OS.
Anyway, thank SAP DEV team to implement this in newest revision, it is great work for using old 32bit OS developer to develop XS engine project.
Please refer to below link to download it.