Write an iterative function that $($a$)$ takes two signed integer arguments in $a$0$ and $a$1$; $($b$)$ uses repeated addition to compute their product, e$.$g$.,4*3$ as $4+4+4$; and $($c$)$ returns the result in $v$0.$ No other values may be passed to the function, and no other values may be returned from the function. $$ All contents of all registers, other than $v$0,$ that are altered within the function should be appropriately saved are restored. Write a $$main$$ that will properly test the function.