RUNNING SMALLER MEMORY-ADDRESS WIDTH PROGRAM CODE IN A LARGER MEMORY-ADDRESS WIDTH ADDRESS SPACE

RUNNING SMALLER MEMORY-ADDRESS WIDTH PROGRAM CODE IN A LARGER MEMORY-ADDRESS WIDTH ADDRESS SPACE

Method and system are provided for running a smaller memory-address width program in a larger memory-address width address space. The method includes: dividing a smaller memory-address width program executable code into a set of portions; reserving a first virtual storage area in a part of an addres...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Jacobi, Christian, Tzortzatos, Elpida, Moxey, Catherine Mary, Hobson, Stephen James
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:Method and system are provided for running a smaller memory-address width program in a larger memory-address width address space. The method includes: dividing a smaller memory-address width program executable code into a set of portions; reserving a first virtual storage area in a part of an address space accessed using a smaller memory-address width address; and reserving a set of second virtual storage areas in a part of the address space accessed using a larger memory-address width address to accommodate the program executable code. The method provides a relocation mechanism to relocate a processor thread by translating using a relocation factor from an address in the reserved first virtual storage area to the one of the reserved second virtual storage areas containing the executable code.