Documentation/staging/lzo.rst

23   opcode and on the number of literals copied by previous instruction. The
28     - the number of literals to copy, which is retained in variable "state"
59   After any instruction except the large literal copy, 0, 1, 2 or 3 literals
60   are copied before starting the next instruction. The number of literals that
63   literals were copied. This is the information stored in the <state> variable
64   in this implementation. This number of immediate literals to be copied is
111       18..21  : copy 0..3 literals
112                 state = (byte - 17) = 0..3  [ copy <state> literals ]
117                 state = 4 [ don't copy extra literals ]
123         Depends on the number of literals copied by the last instruction.
130            state = 4  (no extra literals are copied)
132         If last instruction used to copy between 1 to 3 literals (encoded in
137         following literals for free. It must be interpreted like this :
141            state = S (copy S literals after this block)
145         If last instruction used to copy 4 or more literals (as detected by
151            state = S (copy S literals after this block)
160            state = S (copy S literals after this block)
177            state = S (copy S literals after this block)
181            state = S (copy S literals after this block)
188            state = S (copy S literals after this block)