Table lookup instruction for processors using tables in local memory

摘要

In a processor system configured to execute instructions, a method finds an entry in at least one table stored in memory. The method includes (a) storing a first table of multiple entries, each entry including a bit field; (b) storing (i) a first entry of the first table and (ii) a bit size of each entry; (c) storing a sequence of data bits; (d) selecting a portion of the sequence of data bits to produce a data field having a bit size same as the bit size of each entry in the first table; and (e) adding the first entry of the first table to the produced data field to find the entry in the first table.