It is not a program. It is a hardware design tuned to be efficiently mapped onto the primitives/resources in the specific FPGA fabric of the target devices. I'm

It is not a program. It is a hardware design tuned to be efficiently mapped onto the primitives/resources in the specific FPGA fabric of the target devices. I'm fairly sure the actual source code is far from little. But the number of resources needed is quite low. Given a clock and access to memory it will execute programs.