Write the MIPS assembly code that corresponds to the pseudo

Write the MIPS assembly code that corresponds to the pseudo code below. Assume that the address for integer i is baseaddress+4 and the address for a[0] is baseaddress+8. Assume that the baseaddress is stored in $gp. The code initializes i to 0; it then iterates from i=0 to i=4, setting a[i] = 2i in each iteration. To make your code efficient, i must be loaded into a register at the start, and it must be updated in memory only after you\'ve finished the for loop. for (i=0; i

Solution

li $to,0 #i=0

loop:

slti $t1,$t0,5 #$t1=1 iff $t0<5

beq $t1,$zero,end # if result of slti is 0 then end loop

lw $t0,0($gp) #base address of array a is in $gp loaded to register $t3

sll $t2,$t0,2 # $t0= 4*i

add $t2,$t2,$gp

sw $t2,0($gp) #a[i]=

add $t2,$t0,$t0 #2*i

addi $t0,$t0,1 #i++

j loop

end: