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Completing Data Set Definition at LINKEDIT Time

IP.com Disclosure Number: IPCOM000077911D
Original Publication Date: 1972-Oct-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Boder, RH: AUTHOR [+2]

Abstract

The LINKEDIT concept allows for data set definition after the assembly of the application program, but prior to execution. This is particularly useful in applications where programs are initiated in/or loaded from an interconnected system. The definition of data sets is normally fully or partially completed during the assembly of an application program, or optionally modified at execution time. This concept provides for a logical connection between the data set definition control block and the modifying data, allowing modification during the linkage editing process.

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Completing Data Set Definition at LINKEDIT Time

The LINKEDIT concept allows for data set definition after the assembly of the application program, but prior to execution. This is particularly useful in applications where programs are initiated in/or loaded from an interconnected system. The definition of data sets is normally fully or partially completed during the assembly of an application program, or optionally modified at execution time. This concept provides for a logical connection between the data set definition control block and the modifying data, allowing modification during the linkage editing process.

During the assembly of an application program, the user defines whether he desires resolution of data set definition during execution, linkedit or assembly. The distinction between linkedit resolution and execution resolution is made by the linkage editor's resolving an external reference address constant, which is the address of the deferred definition information. If this address constant remains unresolved, the system open routine will perform the resolution at execution time.

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