timing belt broke, head a valves ok. how do you time the crank and cams? on 2001 Volvo S80

I took it all apart and did the head gasket as well since i had to take the head off anyway. just need to know how to line up the cams and crank to reinstall. no 1 cylinder at TDC?

Asked by for the 2001 Volvo S80
There are special tools needed to do this, the marks are not very helpful. FYI, it's nearly impossible to break the timing belt and not bend valves on this engine. How do you know they are ok?
head was pressure tested, and the valve were replaced and resealed. And no the timing marks aren't much help. Its all back together already and I checked the clearance and it rotates freely and will run, just not well.