using Tombstone notation to answer this question. But make sure you are using tombstone diagrams

Show in pictures $($a$,2$pt$)$ Host executable compiler for language Cafe running on machine with machine language XL$.$ You also have the machine running XL$.($b$,2)$ Source in Cafe for the same compiler. $($c$,2)$ as a$)$ but cross compiler into Java instead $($d$,4)$ Show how to take a program P written in Caf$$ and change it to be the program P in Java.