Apparatus and method for preprocessing computer programs prior t

Details Apparatus and method for preprocessing computer programs prior t Apparatus and method for preprocessing computer programs prior t

1995-12-29

1998-03-31

Geckil, Mehmet B.

3952005, 39520046, 395706, G06F 945

Patent

active

057348227

ABSTRACT:
A system for preprocessing computer programs before downloading them into terminals includes a packager which processes certain information contained in compiled but unlinked programs. The packager partially resolves undefined symbols and relocations based on knowledge of a dispatch table in the destination terminal and other information known prior to the downloading process. Additionally, the packager determines the sizes of separate code, data, dispatch table and temporary symbol areas, incorporates this size information into a header, and transmits a data stream including the header and the aforementioned areas, including partially resolved symbols, to one or more terminals such as home communication terminals (HCTs) in a cable television network. Each receiving terminal extracts the size information and allocates only as much memory as is needed to store each of the separate areas, thus avoiding the need for a temporary holding buffer. The receiving terminal thereafter relocates remaining executable instructions to prepare the computer program for execution.

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