Spidermonkey under pure kvm

Hi Gentlemen,
I write a web server in c and I have to include server side c and javascript programming possibility. Due to security reason they must run under absolute control, so I would like apply spidermonkey under kvm directly. Every logins run in separated kvm and the c and javascrip are separated from each other, too. I have an interface system for kvm c processes.
Is there any implementation or sample for spidermonkey?
Or it have to develop as new a project?
In this case can I get the list of required interfaces of spidermonkey to system?
Or any advice?
Thanks, Miki.