Translate the following function f to MIPS assembly code.

int f(int a, int b, int c, int d)

{

return func(func(a,b), func(b+c,d));

}

Assume the followings.

The prototype of function func is int func(int a, int b);.

You do not need to implement function func. The first instruction in function func is labeled FUNC.

In the implementation of function f, if you need to use registers $t0 through $t7, use the lower-numbered registers first.

In the implementation of function f, if you need to use registers $s0 through $s7, use the lower-numbered registers first.