Method of establishing pre-fetch control information from an executable code and an associated nvm controller, a device, a processor system and computer program products

Abstract

A method of establishing pre-fetch control information from an executable code is described. The method comprises inspecting the executable code to find one or more instructions corresponding to an unconditional change in program flow during an execution of the executable code when the executable code is retrieved from a non-volatile memory comprising a plurality of NVM lines. For each unconditional change of flow instruction, the method comprises establishing a NVM line address of the NVM line containing said unconditional change of flow instruction; establishing a destination address associated with the unconditional change of flow instruction; determining whether the destination address is in an address range corresponding to a NVM-pre-fetch starting from said NVM line address; establishing a pre-fetch flag indicating whether the destination address is in the address range corresponding to a NVM-pre-fetch starting from said NVM line address; and recording the pre-fetch flag in a pre-fetch control information record.