Emulators / Simulators available as a library?

[obrash]

Are any of the HP calculator emulators/simulators available in C or C++ library form - so that the core functionality (minus UI) could be easily invoked from another application?

I am experimenting with a general purpose system for program synthesis from examples and was thinking it would be fun to experiment with automatically generating programs for classic HP calculators (since I'm a fan). To minimize the work on my part (because I am lazy and have a real job) the easiest path to such an experiment would be to find an HP calculator "vm" in library form that I could adapt to provide the set of available operators to the program synthesis system.

Thanks in advance for any useful pointers.