#1:

if(x & 7 == 6)
    x = get(x & ~7)
else
    x = (x & 7) << 3

#2:

if(x & 7 == 6)
    x = get(x & ~7)
else if(x & 7 == 7)
    x = get((x & ~7) + 4)
else
    x = (x & 7) << 3

// get(addr) is just a word-size memory load