From the book: Computer Organization and Design Arm edition

4.12 Examine the difficulty of adding a proposed swap Rd, Rn instruction to LEGv8. Interpretation: Reg[Rd]-Reg[Rn]: Reg[Rn]-Reg[Rd] 4.12.1 [5] Which existing functional blocks (if any) require modification? 4.12.3 [5] What new data paths do we need (if any) to support this instruction? 4.12.4 15] What new signals do we need (if any) from the control unit to support this instruction? 4.12.5 [5] Which existing functional blocks (if any) require modification? 4.12.3 [5] What new data paths do we need (if any) to support this instruction? 4.12.4 15] What new signals do we need (if any) from the control unit to support this instruction? 4.12.5 [5]