NOTE: Refer to the MIPS Reference Data Card. Consider the following MIPS code: L

Question

NOTE: Refer to the MIPS Reference Data Card.

Consider the following MIPS code:

LOOP:

slt $t2, $zero, $t1

beq $t2, $zero, DONE

subi $t1, $t1, 1

addi $s2, $s2, 2

j LOOP

DONE:

a) Assume that register $t1 is initialized to the value 10 (in base 10), and $s2 is initialized to zero. What is the value of $s2 after executing the code segment above?

b) Convert the MIPS instructions above to C code. Assume that registers $s2 and $t1 contain the variables B and i, respectively. c) How many MIPS instructions would be executed if the register $t1 was initialized to the value N?

Explanation / Answer

Loops executes 10 times
and s2 value get decremented 10 times by 2, so value will be -20

int i;
for(i = 0 ; i < t1 ; i++)
   s2 = s2 - 2;

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