Question

Using a diagram similar to Figure 7.53, show the forwarding and stalls needed to execute the following instructions on the pipelined ARM processor.

Exercise 7.30 Using a diagram similar to Figure 7.53, show the forwarding and stalls needed to execute the following instructions on the pipelined ARM processor. ADD RO, R4, R9 SUB RO, RO, R2 LDR R1, [RO, #60] AND R2, R1. RO 4 8 Time (cycles) R4 LDR RE 40 R1 DM LDR R1, [R4, #40] |IM RF AND R8 AND R8, R1, R3 RF R3 DM IM RF R3 RF R6 ORR IM R9 ORR R9, R6, R1 IM ORR DM RF R1 Stall R1 RF R7 SUB DM R10 SUB R10, R1, R7 IM RF Figure 7.53 Abstract pipeline diagram illustrating stall to solve hazards

Answer 1

InstJncton 3 RF RF ADD SuG Ro Ro R IM RF om R-F RF AND Stal cand Cscle needeo.