Trampoline for Virtual to Physical address mapping

No, but a slip-n-slide can be used to do the functionality of an FPGA.

Most of what an MMU does cannot be done with a trampoline.

You may already be aware of this, of course, but it won't hurt to add this bit... A 'trampoline' is described in the GNU compiler for use with nested functions (in certain calling cases.) The purpose there is to deal with static links, though the concept could be used for many other purposes, I suppose. I don't know what in the heck the OP is thinking of, though.

Jon