Intel Corporation

Samuel Rydh

Bengt Werner

Peter S Magnusson

Magnus Vesterlund

Magnus Christensson

Johan Rydberg

Devices, methods, and software program products for reverse execution of a simulation and/or tracing a value are provided. A state of a preceding checkpoint may be restored and a simulation may be run forward. Break points or watch points may be noted and the state of the last occurring breakpoint or watch point preceding the current simulation position may be restored. If no breakpoint or watch point occurred, an earlier checkpoint may be loaded and the previous steps may be repeated.

Devices, methods and computer program products for reverse execution of a simulation

Arbitrary, unmodified code and/or software may be executed directly on a host processor operating in a virtualized mode using hardware virtualization support and performance counters. The arbitrary software may be run on the host processor until the host processor exits from the virtualized mode. An end execution time may be calculated in response to the host processor exiting from the virtualized mode. An event may then be handled based on an execution time at which the host processor exited from the virtualized mode and a time at which a scheduled event was to occur.

Growing community of inventors

Stockholm, Sweden

Samuel Rydh