_mulu

 NAME
  _mulu - unsigned long multiply 32/32->32 assembly tag
      not callable from C

 ENTRY
  D0 = 32 bit unsigned integer
  D1 = 32 bit unsigned integer

 RETURN
  D0 = D0 * D1

 FUNCTION
  This is an assembly function that DICE uses whenever it needs to do
  an unsigned long multiply.  This function is not callable from C.

 SEE ALSO
_divs, _mods, _modu, _muls