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Saving the Current ADDRESS When Linking Across ADDRESS Spaces in a Processor Having Extended Addressing

IP.com Disclosure Number: IPCOM000061436D
Original Publication Date: 1986-Aug-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
Bouke, D Brinck, G Downs, E Doyle, D Hallerman, M Kurtz, H Taylor, G [+details]

Abstract

When linking across address spaces in a processor, it is necessary to save not only the Instruction Address Register (IAR) of the "from" instruction, but also the address space it was in. Modifications to the link instructions are described which may be used to save the "from" instruction key in the Address Space Index Register (ASIR) associated with the "return" register. For supplementary background information, reference is made to the article on page 974 of this issue.