Processor for correlation-based infinite loop detection
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United States of America Patent
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Jul 28, 2017
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Jul 28, 2016
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Abstract
A processor comprises an execution unit and a detection unit which are functionally connected. The execution unit is configured to execute computer programs, and the detection unit is configured to detect infinite loops during the execution of a computer program in the execution unit during run-time. The computer program has a plurality of go-to instructions, and each go-to instruction is characterized by a corresponding branch address. The detection unit is configured to calculate a detection function of the branch addresses of a branch sequence, the branch sequence including a sequence of executed go-to instructions. The detection function is chosen such that an increased value of the detection function is characteristic of an infinite loop in the branch sequence in which at least one go-to instruction is repeated.
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