Mapping a stack in a stack machine environment
CA 2241865 A1 · Owner: Ibm Canada Limited - Ibm Canada Limitee · Inventors: Low, Andrew; Duimovich, John; Johnson, Graeme
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The stack mapper of the present invention seeks to determine the shape of the stack at a given, program counter. This is accomplished by locating all start points possible for a given method, that is, at all of the entry points for the method and all of the exception entry points, and trying to, find a path from the beginning of the method to the program counter in question. The mapper, first tries to locate a linear path from the beginning of the method and then , iteratively processes, the sequence of bytes at each branch until the destination program counter is reached. Once the, path is found, a simulation is run of the stack through that path which is , used as the virtual stack, …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 29, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.