Boots – shoes – and leggings
Patent
1992-08-11
1995-09-26
Teska, Kevin J.
Boots, shoes, and leggings
395700, 39518311, 39518312, 39518314, 364264, 3642656, 3642678, 364285, 364DIG1, G06F 900, G06F 1100
Patent
active
054540860
ABSTRACT:
Provides a dynamic execution link between an analyzer program and each hook instruction in a program. Special types of hook instructions are provided for use in a hooked program. The link causes the analyzer program to execute as part of a continuous uninterrupted execution for each hook instruction. The link uses hardware and/or internal code to access a hook control area which provides linkage information needed to invoke the execution of the analyzer program upon completion of the hook instruction and to continue the execution of the hooked program following the completion of the analyzer program. The linkage information includes the entry location into the analyzer program, and also locates the first hook work area (HWA) of a sequence of HWAs, from which an HWA is assigned to each current hook instruction. The assigned HWA stores a return point location in the hooked program at an instruction following the current hook instruction. One or more hooked programs may concurrently use the same analyzer program. As soon as execution by the analyzer program ends for a hook instruction, its assigned HWA is released for use by another hook instruction.
REFERENCES:
patent: 4831517 (1989-05-01), Crouse et al.
patent: 4937740 (1990-06-01), Agarawal et al.
patent: 5265254 (1993-11-01), Blasciak et al.
Alpert Alan I.
Clark Carl E.
Hack Michel H. T.
Scalzi Casper A.
Schmalz, deceased Richard J.
Goldman Bernard M.
International Business Machines - Corporation
Mohamed Azni
Teska Kevin J.
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