Multithreading method of dynamic code conversion of loongson multi-core central processing unit (CPU) simulation

Abstract

The invention relates to a multithreading method of dynamic code conversion of loongson multi-core central processing unit (CPU) simulation. The multithreading method includes: initializing a loongson multi-core CPU needing simulation; preparing the corresponding dynamic code conversion environments for all cores of the CPU to be simulated; completing initialization of all dynamic code conversion through cross-thread communication; leading all the dynamic code conversion threads to start to work parallely. The multithreading method is characterized in that the cores of the loongson multi-core CPU needing simulation are detected, the corresponding multi-thread dynamic code conversion environments are prepared, parallel execution of dynamic code conversion is ensured by aid of the communication mechanism between multiple threads, unnecessary waiting of simulation cores when needing to obtain the execution chance and in the inter-core communication process is avoided, and the simulation efficiency of the loongson multi-core CPU is improved. The multithreading method has wide practical value and application value in the technical field of computer virtualization.

Description

technical field [0001] The present invention relates to the multi-threading method of the dynamic code conversion of Loongson multi-core CPU simulation, in particular to a multi-threaded code conversion environment design, a communication mechanism between multi-conversion threads, and multi-threading of Loongson multi-core CPU based on the above method. The thread simulation method is capable of optimizing the simulation efficiency by performing code conversion with multiple threads in parallel when simulating the Loongson multi-core CPU, and belongs to the technical field of computer virtualization. Background technique [0002] Most of the servers currently using domestic Loongson processors use Loongson multi-core CPUs. Usually, the CPU hardware needs to be simulated during the research and development process. CPU simulation refers to simulating the corresponding hardware environment through software methods and providing a transparent environment to the upper layer. Th...

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Problems solved by technology

[0003] Existing simulation implementations of Loongson multi-core CPUs do not allow multiple analog cores to perform parallel code conversion, which reduces the simulation efficiency of Loongson multi-core CPUs, such as figure 1 As shown, in the current Loongson multi-core CPU simulation implementation, since each simulated CPU core obtains an execution opportunity according to the polling method, at the same time, during the inter-core communication process, the simulated core that needs to respond fails because it does not get an execution opportunity. The communication process cannot be completed in time, thereby reducing the simulation efficiency of the Loongson multi-core CPU

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