Hardware and software co-simulation including simulating a target processor using binary translation

摘要

A co-simulation design system to simulate on a host an electronic system that includes target digital circuitry and a target processor with an accompanying user program. The system includes a processor simulator to simulate execution of the user program by executing host software that includes an analyzed version of the user program. The system further includes a hardware simulator to simulate the target digital circuitry and an interface mechanism that couples the hardware simulator with the processor simulator. The user program is provided in binary form. Determining the analyzed version of the user program includes decomposing the user program into linear blocks, translating each linear block of the user program into host code that simulate the operations of the linear block, storing the host code of each linear block in a host code buffer for the linear block, and adding timing information into the code in the host code buffer on the time it would take for the target processor to execute the user program. The timing information incorporates target processor instruction timing. Adding of timing information includes inserting dynamic hooks into the host code that during execution invoke dynamic mechanisms that may effect timing and that cannot be determined ahead of execution such that while the processor simulator executes the analyzed version of the user program, the processor simulator accumulates simulation time according to a simulation time frame, the accumulated simulation time accounting for the target processor instruction timing as if the user program was executing on the target processor.