Question

1. Assume that variables f,g,h,ij are assigned to registers Ss0 to Ss4 (in the given order). Assume that the base addresses of arrays A and B are in $s6 and Ss7. Registers St0 to St2 are used to hold temporary values. What does this code do? (A is a label, assembler will replace this label with inbstruction addresses as needed in generating machine code) add St0,Szero,Ss0 addi St0,St0,400 A: lw $s7, O(St0) addi $s7, Ss7,1 sw $s7,0 (St1) subi Sto, Sto, 4 bne $t1 Ss0 A

Answer 1

Please find the code below::::

add $t0,$zero,$s0 #load 0 to t0
addi $t0,$t0,400 #add 400 to t0
A : lw $s7,0($t0) #load value from array A
addi $s7,$s7,1 #increase value by one
sw $s7,0($t1) #store value to array B
subi $t0,$t0,4 #subtract index by 4
bne $t1,$s0,A #loop until t1 is greater than zero

Conclusion::

Given code traverse array A in reverse order and increase it's value by one and assigns this value to another array B.