Accompanying blogpost at http://x86overflow.blogspot.in/2014/04/playing-around-with-srop.html Reference : http://www.cs.vu.nl/~herbertb/papers/srop_sp14.pdf
Note : All this functionality(and more!) has been merged into binjitsu for x86, amd64, arm, aarch64, mips, mipsel and powerpc. Enjoy. (github.com/binjitsu/binjitsu)