Data processing: software development – installation – and managem – Software program development tool – Translation of code
Reexamination Certificate
2007-08-07
2007-08-07
Nguyen-Ba, Antony (Department: 2192)
Data processing: software development, installation, and managem
Software program development tool
Translation of code
C717S138000, C717S151000, C712S227000
Reexamination Certificate
active
09434394
ABSTRACT:
A computer binary translator translates at least a segment of a binary representation of a program from a first instruction set architecture to a second instruction set architecture. A sequence of side-effects in the translation differs from a sequence of side-effects in the original. The translation distinguishes memory loads that are believed to be directed to well-behaved memory from memory loads that are believed to be directed to non-well-behaved memory device(s). Instruction execution circuitry identifies a memory reference that has a side-effect that has been reordered by translation, the memory reference having been believed at translation time to be directed to well-behaved memory but at execution it is found that the reference cannot be guaranteed to be well-behaved. The instruction execution circuitry identifies whether the difference in side-effect order may have a material effect on the execution of the program. A roll-back program state is established, and execution of the original code resumes.
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Hohensee Paul H.
Reese David L.
Van Dyke Korbin S.
Yates, Jr. John S.
ATI International SRL
Boundy David E.
Nguyen-Ba Antony
Willlkie Farr & Gallagher LLP
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