Switching to original code comparison of modifiable code for...

Details Switching to original code comparison of modifiable code for... Switching to original code comparison of modifiable code for...

2008-07-22

2008-07-22

Kim, Kenneth S (Department: 2111)

Data processing: software development, installation, and managem

Software program development tool

Translation of code

C712S226000, C717S138000, C717S139000

Reexamination Certificate

active

07404181

ABSTRACT:
A method of translating instructions from a target instruction set to a host instruction set. In one embodiment, a plurality of first target instructions is translated into a plurality of first host instructions. After the translation, it is determined whether the plurality of first target instructions has changed. A copy of a second plurality of target instructions is stored and compared with the plurality of first target instructions if the determining slows the operation of the computer system. After comparing, the plurality of first host instructions is invalidated if there is a mismatch. According to one embodiment, the storing, the comparing and the invaliding is initiated when the determining indicates that a page contains at least one change to the plurality of first target instructions. In one embodiment, the determining is by examining a bit indicator associated with a memory location of the plurality of first target instructions.

REFERENCES:
patent: 5832205 (1998-11-01), Kelly et al.
patent: 5875318 (1999-02-01), Langford
patent: 6164841 (2000-12-01), Mattson et al.
patent: 6199152 (2001-03-01), Kelly et al.
patent: 6363336 (2002-03-01), Banning et al.
patent: 6415379 (2002-07-01), Keppel et al.
patent: 6704925 (2004-03-01), Bugnion
patent: 6845353 (2005-01-01), Bedichek et al.
patent: WO-01/48605 (2001-07-01), None

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