Ahh yes, exposing registers is planned and very trivial to implement, as it's available at the C code level, just needs to be exposed to the script runtime (V8)

Ahh yes, exposing registers is planned and very trivial to implement, as it's available at the C code level, just needs to be exposed to the script runtime (V8). Future versions may also allow specifying an ABI, so args[0] maps to ecx for thiscall in 32-bit mode. My explanation of the hooking was a bit oversimplified, there is indeed support for hooking the return. Just implement onLeave(retval) in addition to onEnter(args), and you'll have access to the return value (coming from EAX/RAX). Feedback is most appreciated, so please let me know if there's any issues. :)