fields = list(map(int, fields))
            insn = 59 << (31-5)  # opcode 59, bits 0-5
            insn |= fields[0] << (31-10)  # RT       , bits 6-10
            insn |= fields[1] << (31-20)  # RB       , bits 16-20
            insn |= 0b1000001110 << (31-30)  # XO       , bits 21..30
            if opcode == 'fsins.':
                insn |= 1 << (31-31)     # Rc=1     , bit 31
            log("fsins", bin(insn))
            yield ".long 0x%x" % insn