You can't read (E|R)IP because there's no x86(/64) instruction to read it directly.
The only way to "read" it is to make a call with the CALL instruction. It will save the return address on the stack and that one you can read.
UPDATE: In 64-bit mode you can exploit the RIP-relative addressing, so LEA RAX, [RIP] will give you the address of itself in EAX. Yet another workaround is MOV RAX, $ in assembly.
