Question

Translate the following C code to LEGv8. Assume that the variables f, g, h, i, and j are assigned to registers X0, X1, X2, X3, and X4, respectively. Assume that the base address of the arrays A and B are in registers X6 and X7, respectively. Assume that the elements of the arrays A and B are 8-byte words:

B[8] = A[i] + A[j];

Answer 1

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ANSWER:

CODE:

#offset value of A[i]

sll $t0, $x3, 2

#add the address of A[i]

add $t0, $t0, $x6   

#load A[i] value to t0

lw $t0, 0($t0)

#offset value of A[j]

sll $t1, $x4, 2

#add the address of A[j]

add $t1, $t1, $x6   

#load A[j] value to t1

lw $t1, 0($t1)

#add the address t1   

add $t2, $t0, $t1   

# B[8] = A[i] + A[j]

sw $t2, 32($x7)

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