SH-2A Datasheet, PDF (186/501 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 6 Instruction Descriptions
Example:
BSR
MOV
ADD
TRGET
R3,R4
R0,R1
.......
.......
TRGET:
MOV R2,R3
RTS
MOV #1,R0
; Branches to TRGET
; Executes the MOV instruction before branching
; ← The PC location is used to calculate the branch destination address of
the BSR instruction (return address for when the subroutine procedure is
completed (PR data))
; ← Procedure entrance
;
; Returns to the above ADD instruction
; Executes MOV before branching
Note:
When a delayed branch instruction is used, the branching operation takes place after the
slot instruction is executed, but the execution of instructions (register update, etc.) takes
place in the sequence delayed branch instruction → delayed slot instruction. For example,
even if a delayed slot instruction is used to change the register where the branch
destination address is stored, the register content previous to the change will be used as the
branch destination address.
Rev. 3.00 Jul 08, 2005 page 172 of 484
REJ09B0051-0300