reassemble_21
stub->insns[0] |= reassemble_21(lrsel(value, addend));
stub->insns[0] |= reassemble_21(lrsel(value, addend));
stub->insns[0] |= reassemble_21(lrsel(value, addend));
*loc = mask(*loc, 21) | reassemble_21(val);
*loc = mask(*loc, 21) | reassemble_21(val);
*loc = mask(*loc, 21) | reassemble_21(val);