This is the third (and last) post in a series (first post here, second here) about ROPC, describing implementation of its features like tables, conditional jumps, recursive calls, etc. Please familiarize yourself with the two first posts, otherwise this one might be hard to follow.
This is the second post in a series (first post here) describing ROPC. Programs accepted by the compiler are written in ROPL (Return Oriented Programming Language). ROP programs are usually used as stage 0 payloads. They compute addresses, change memory protections, call few OS APIs. For this reason, language expressing them doesn’t have to be complex.