-
公开(公告)号：DE68924720T2
公开(公告)日：1996-06-13
申请号：DE68924720
申请日：1989-02-02
Applicant: IBM
Inventor： CLARK CARL EDWARD , GANEK ALAN GEORGE , MALL MICHAEL GERARD , PAGE DAVID RICHARD
Abstract: 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 (20), a plurality of access registers (22) associated with the general registers, an access list (24,25) having access list entries which is addressed by the contents of the access register, memory storage (30) for holding address space number second table entries (ASTE) (98), where the contents of the access list entry locate the ASTE and where the ASTE contains the addressing information needed to locate a virtual address when combined with the contents of a general register. Access register translation (ART) consists of the process of determining addressing information by using the access list entry and the ASTE. The system has available to it at any one time a selection of one of two domains each represented by an access list. One domain is related to the dispatchable unit task to be performed and the other is related to the address space in which a particular program operates. The ART process selects the domain which the access register is using.
-
公开(公告)号：DE3854616T2
公开(公告)日：1996-06-13
申请号：DE3854616
申请日：1988-12-12
Applicant: IBM
Inventor： BAUM RICHARD IRWIN , BORDEN TERRY LEE , BUTWELL JUSTIN RALPH , CLARK CARL EDWARD , GANEK ALAN GEORGE , LUM JAMES , MALL MICHAEL GERARD , PAGE DAVID RICHARD , PLAMBECK KENNETH ERNST , SCALZI CASPER ANTHONY , SCHMALZ RICHARD JOHN
Abstract: 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 associatd address space can only be accessed by an authorized program. For a 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.
-
公开(公告)号：DE3854616D1
公开(公告)日：1995-11-30
申请号：DE3854616
申请日：1988-12-12
Applicant: IBM
Inventor： BAUM RICHARD IRWIN , BORDEN TERRY LEE , BUTWELL JUSTIN RALPH , CLARK CARL EDWARD , GANEK ALAN GEORGE , LUM JAMES , MALL MICHAEL GERARD , PAGE DAVID RICHARD , PLAMBECK KENNETH ERNST , SCALZI CASPER ANTHONY , SCHMALZ RICHARD JOHN
Abstract: 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 associatd address space can only be accessed by an authorized program. For a 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.
-
公开(公告)号：DE68924720D1
公开(公告)日：1995-12-14
申请号：DE68924720
申请日：1989-02-02
Applicant: IBM
Inventor： CLARK CARL EDWARD , GANEK ALAN GEORGE , MALL MICHAEL GERARD , PAGE DAVID RICHARD
Abstract: 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 (20), a plurality of access registers (22) associated with the general registers, an access list (24,25) having access list entries which is addressed by the contents of the access register, memory storage (30) for holding address space number second table entries (ASTE) (98), where the contents of the access list entry locate the ASTE and where the ASTE contains the addressing information needed to locate a virtual address when combined with the contents of a general register. Access register translation (ART) consists of the process of determining addressing information by using the access list entry and the ASTE. The system has available to it at any one time a selection of one of two domains each represented by an access list. One domain is related to the dispatchable unit task to be performed and the other is related to the address space in which a particular program operates. The ART process selects the domain which the access register is using.
-
公开(公告)号：BR8900568A
公开(公告)日：1989-10-10
申请号：BR8900568
申请日：1989-02-09
Applicant: IBM
Inventor： BAUM RICHARD IRWIN , BORDEN TERRY LEE , BUTWELL JUSTIN RALPH , CLARK CARL EDWARD , GANEK ALAN GEORGE , LUM JAMES , MALL MICHAEL GERARD , PAGE DAVID RICHARD , PLAMBECK KENNETH ERNEST , SCALZI CASPER ANTHONY , SCHMALZ RICHARD JOHN
Abstract: 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 associatd address space can only be accessed by an authorized program. For a 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.
-
Patent Agency Ranking
公开(公告)号：GB2373978A
公开(公告)日：2002-10-02
申请号：GB0107953
申请日：2001-03-30
Applicant: IBM
Inventor： PAGE DAVID RICHARD , SCHMIDT-WESCHE BIRGIT , STONE JONATHAN
IPC: G06F17/30
Abstract: A method of retrieving information by navigating within a web browsing session. The information is stored on a server in a hierarchical tree comprising a root node, top-level child nodes representing information categories and leaf nodes representing information sub-categories. Each of the nodes has an associated information unit. Initially, an information unit associated with the root node is displayed in an information space. A user then performs navigation operations from the root node, by selecting a first top-level child node, traversing the leaf nodes and selecting a first leaf node. A first information unit associated with the first leaf node is subsequently displayed in the information space. This first information unit is stored, the navigation operations are repeated on a second top-level child node until a second information unit is displayed in the information space. The user then re-selects the first top-level child node and in response to the re-selection the first information unit is automatically re-displayed in the information space.
-
-
公开(公告)号：DE2337713A1
公开(公告)日：1974-02-14
申请号：DE2337713
申请日：1973-07-25
Applicant: IBM
Inventor： CZAYKOWSKI JERZY TADEUSZ , PAGE DAVID RICHARD
-
公开(公告)号：GB2373978B
公开(公告)日：2005-05-18
申请号：GB0107953
申请日：2001-03-30
Applicant: IBM
Inventor： PAGE DAVID RICHARD , SCHMIDT-WESCHE BIRGIT , STONE JONATHAN
IPC: G06F17/30
Abstract: A method of retrieving information by navigating within a web browsing session. The information is stored on a server in a hierarchical tree comprising a root node, top-level child nodes representing information categories and leaf nodes representing information sub-categories. Each of the nodes has an associated information unit. Initially, an information unit associated with the root node is displayed in an information space. A user then performs navigation operations from the root node, by selecting a first top-level child node, traversing the leaf nodes and selecting a first leaf node. A first information unit associated with the first leaf node is subsequently displayed in the information space. This first information unit is stored, the navigation operations are repeated on a second top-level child node until a second information unit is displayed in the information space. The user then re-selects the first top-level child node and in response to the re-selection the first information unit is automatically re-displayed in the information space.
-
公开(公告)号：BR8900567A
公开(公告)日：1989-10-10
申请号：BR8900567
申请日：1989-02-09
Applicant: IBM
Inventor： CLARK CARL EDWARD , GANEK ALAN GEORGE , MALL MICHAEL GERARD , PAGE DAVID RICHARD
Abstract: 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 (20), a plurality of access registers (22) associated with the general registers, an access list (24,25) having access list entries which is addressed by the contents of the access register, memory storage (30) for holding address space number second table entries (ASTE) (98), where the contents of the access list entry locate the ASTE and where the ASTE contains the addressing information needed to locate a virtual address when combined with the contents of a general register. Access register translation (ART) consists of the process of determining addressing information by using the access list entry and the ASTE. The system has available to it at any one time a selection of one of two domains each represented by an access list. One domain is related to the dispatchable unit task to be performed and the other is related to the address space in which a particular program operates. The ART process selects the domain which the access register is using.
-
-
-
-
-
-
-
-
-
Search Results
11
records
(took 0.016 seconds)
