fmul{ls}
Multiply stack element 7 by stack element 0 and return the product to stack element 0.
fmul %st(7), %st
fmulp
Multiply stack element 0 by stack element 7 and return the product to stack element 7, then pop the stack.
fmulp %st, %st(7)
fimul{l}
Multiply the integer contents of register ECX by stack element 0, return the product to register ECX.
fimul 2(%ecx)