1. A method of encapsulating a long instruction in a set of short instructions for execution on a processor, the long instruction having k bits and each short instruction having l bits where l<k, the method comprising: assembling a first portion of the long instruction and a first identifier to form a first instruction of the set of short instructions; and assembling a second portion of the long instruction and a second identifier to form a second instruction of the set of short instructions; wherein at least one of the first and second identifiers is for identifying to the processor that the set of short instructions encapsulates the long instruction.