International Business Machines Corporation

James Lum

Casper A Scalzi

Richard I Baum

Michael Gerard Mall

Alan G Ganek

Richard J Schmalz

Terry L Borden

Kenneth E Plambeck

Carl Edward Clark

Justin R Butwell

Michael A Enescu

Ronald M Smith

Julian Thomas

Ronald L Obermarck

David Richard Page

Kurt A Shoens

Carol E Clark

A standardized message processing procedure is invoked by an application program to generate informative messages. Message repositories are provided in files accessible to the message processor. A separate repository is provided for each national language which is supported. The application invokes the message processor, passing variable information for inclusion in a message. The message processor retrieves the message syntax and fixed fields from the appropriate repository, assembles the message using information from the repository and information provided by the invoking application, and generates the message. A preprocessor can be used to generate the repository files, and macros suitable for inclusion in application source files to invoke the message processor.

Message processing system

A computer system has general purpose registers, control registers and access registers for containing information to allow address space capability. A linkage stack uses protected address space to store state information during program call and program return operations. The linkage stack contains information relating to state entries for the saved information and header and trailer entries to point to other linkage stack sections. A control register contains the pointer to the current linkage stack entry and is changed as the program call or return moves through the stack.

Linkage mechanism for program isolation

A program authorization mechanism for authorizing access to an address space in the main memory of a computer system by a program being run under a multiple address space facility. An access-list entry is associated with each address space, each access-list entry being designated by an access-list-entry token contained in an access register. Each access-list entry includes a private indicator which indicates if the associated address space can be accessed by all programs from this access-list entry or if the associated address space can only be accessed by an authorized program. For program to be authorized, an extended authorization index in a control register must match an access-list extended authorization index in the access-list entry, or the extended authorization index value must be authorized in an authority table associated with the address space. An instruction for testing a given extended authorization index for a given access-list-entry is also disclosed.

Authorization for selective program access to data in multiple address

A method and apparatus is provided to translate the contents of access registers into information for use in performing addressing functions for multiple virtual address spaces. The access registers represent the full addressing capability of the system but do not directly contain the addressing information. The system has a plurality of general purpose registers, a plurality of access registers associated with the general registers, an access list having access list entries which is addressed by the contents of the access register, memory storage for holding address space number second table entries (ASTE), where the contents of the access list entry locate the ASTE and where the ASTE contains the addressing information needed to translate a virtual address when combined with the contents of a general purpose register. Access register translation (ART) consists of the process of determining addressing information by using the access list entry and the ASTE. The results of the ART process are stored in an ART lookaside buffer (ALB) which stores the results of ART while valid for later use.

Multiple address space token designation, protection controls,

A tamper-resistant method is disclosed for controlling the number of users given authorized access to licensed software in a host-based, multiple terminal system by use of an encrypted authorization list depth parameter. The method embedded in the host-licensed software can decrypt the depth parameter only using a key derived from its own CPU ID and an offset.

Tamper-resistant method for authorizing access to data between a host

Growing community of inventors

Redwood City, CA, United States of America

James Lum