Return from subroutine.
pc = r31
r30 = r30 + Immediate
This instruction returns from a subroutine by loading the program counter with the contents of the link register (LR/R31). Additionally the stack pointer (register 30) is incremented by the amount specified in the immediate field of the instruction. The immediate value must be a multiple of eight in order to keep the stack word aligned.
This instruction will never cause an exception.
| Opcode7 | Ra5 | Rt5 | Immediate15 | |
| 27 | ---- | ---- | Immediate12 | 000 |