+ ldc_w and field resolving to classes
+ifnull ifnonnull, getClassLoader0
fix ifnull and ifnonnull falsy program counter
+ areturn
+ areturn
methods map types
+lload, lstore_n, iastore, lushr, l2i, newarray, System.nanotime, identityhashcode
+ arraylength, ior, lor, ..
let us not use rzipfile for now, it is insanely slow
mask our integers so that they behave with signed behaviour and overflow