Assume a 32-bit machine. Assume each of the following questions starts from the

Question

Assume a 32-bit machine. Assume each of the following questions starts from the table values; that is, DO NOT use value changes from one question as propagating into future parts of the question.

(a) Give the values of R1, R2 and R3 after this instruction: add R3, R2, R1

(b) What values will be in R1 & R3 after this instruction is executed: load R3, 12(R1)

(c) What values will be in the registers after this instruction is executed: addi R2, R3, #6

Explanation / Answer

Answer:

a) Give the values of R1, R2, and R3 after this instruction: add R3, R2, R1

After add R3, R2, R1:

R1 = 12, R2 = 16 and R3 = 20

b) What values will be in R1 and R3 after this instruction is executed: load R3, 12(R1)

After load R3, 12(R1):

R3 = 16 and R1 = 12

c) What values will be in the registers after this instruction is executed: addi R2, R3, #16

After addi R2, R3, 16:

R2 = 16 and R3 = 20

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