Long mode (64 bit) relative call with a 64 bit immediate value

Question

Is it possible? Intel documentation says opcode E8 can be used with a relative displacement value.

E8 cd CALL rel32

"Call near, relative, displacement relative to next instruction. 32-bit displacement sign extended to 64-bits in 64-bit mode."

Does it mean only 32 bit displacements are allowed? I am quite unclear on the wording here.

Answer 1

Yes. It means that the opcode is followed by a 32-bit displacement. If you want longer, you can compute it yourself with an lea and an indirect call.