b$.$ You are tasked with adding a new pseudo$-$instruction that performs a right

rotational shift.

ror $t$0,$ $t$1,$ imm # rotates $t$1$ imm bits right

Give a reasonably minimal implementation $($i$.$e$.,$ don$$t use control flow

instructions$).$ Should this instruction produce any exceptions $($i$.$e$.,$ can it produce

any unexpected behaviors$)?$ If so$,$ what are they and does your version cause the

same exceptions or introduce any more?