Is there is a way to get the address of a register?

Question

Is there is a way to get the address of a register? For example, the address of the eax register (not it's content).

Answer 1

There has been architectures where low addresses were used to designate CPU registers, like the Univac 1100 series of computers.

http://en.wikipedia.org/wiki/UNIVAC_1100/2200_series

Current x86 hardware doesn't work that way, so you cannot get the address of the EAX register - it just doesn't have one.

Answer 2

Registers are the internal processor storage. They do not have memory addresses, because they do not reside in memory . You identify them by their names: EAX, for example.

That said, memory-mapped registers do exist, but in any modern processor they belong to other devices, never the CPU. They are assigned "fake" memory addresses for convenience. See memory-mapped I/O .

Answer 3

Registers are physical electrical components inside the CPU's circuitry. They are not in RAM and so have no address. To access it's contents you use the mov instruction.