Method and system for managing event queue of software simulator of microprocessor

Abstract

The invention discloses a management method and system of an event queue of a software simulator of a microprocessor, which overcomes the problem of low efficiency of the event queue of a software simulator of a microprocessor in the prior art. The method includes: storing the event queue in a circular array; the circular array contains a plurality of table entries, each table entry corresponds to a clock cycle of the software simulator; each table entry in the circular array One-to-one correspondence with the preset linear linked list, the head pointer and tail pointer of each entry point to the head element and tail element of the corresponding linear linked list respectively; each linear linked list stores the triggers that should be triggered within the clock cycle represented by the corresponding entry Event: point the global period pointer to the table entry corresponding to the current clock cycle; when a clock cycle simulation ends, advance the global cycle pointer by one table entry. Embodiments of the present invention have high efficiency in event insertion, event query and event removal.

Description

technical field [0001] The invention relates to the simulation technology of a microprocessor, in particular to a management method and system for an event queue of a software simulator of a microprocessor. Background technique [0002] When designing a microprocessor, it is common to first use a software simulator to evaluate various alternatives. Through the software modeling of each component, the function and timing of the microprocessor can be accurately simulated, and the defects and errors in the design can be found quickly. [0003] During simulation, those components that require accurate simulation timing will generate a large number of operations with a certain trigger delay. For example, the memory access component frequently issues data cache access operations, and after the operation is issued, it takes 2 cycles to reach the data cache controller. If the data to be accessed is in the data cache, the data will be returned to the memory access unit after 12 clo...

AI Technical Summary

Problems solved by technology

[0021] The technical problem to be solved by this invention is to overcome the inefficient deficiency of the event queue of the software simulator of the microprocessor in the prior art

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