Pertti Kellomäki

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We have provided mechanical veriication support for the DisCo language. DisCo is an object oriented speciication language for the speciication of reactive systems. The paper has two main contributions. The rst one is a mapping of object oriented speciications to the PVS theorem prover, where their invariant properties can be mechanically veriied. The second(More)
While sequential behavior of single objects is fairly well understood, orchestrating the collective behavior emerging from the behaviors of individual objects continues to be a challenging task. This is especially true for distributed reactive systems. The joint action paradigm is a design methodology that concentrates on the collective behavior of objects.(More)
Purpose of embedded computing is to transform input data to output format. Functionality required to achieve this goal is therefore combination of operation executions on computing units and data transfers between those units. To avoid memory bottlenecks, processors use register files to store data during computation.
Software bypassing is a technique that allows programmercontrolled direct transfer of results of computations to the operands of data dependent operations, possibly removing the need to store some values in general purpose registers, while reducing the number of reads from the register file. Software bypassing also improves instruction level parallelism by(More)
Software design aims at a mapping from domain concepts to an implementation. Abstractions that are not highlighted in the implementation structure often exist only in the minds of the developers during development. While this works reasonably well for single-purpose systems, software product lines, i.e., systems built by reusing the same core functionality,(More)