Simulator for displaying debugging information in real time

Abstract

The invention discloses a simulator for displaying debugging information in real time. The simulator comprises a simulation chip, a simulation management module and debugging software of a personal computer (PC); the simulation chip comprises a group of mirror image register units invisible for user programs, and the user programs cannot operate the mirror image register units; the mirror image register units are mirror images of certain register or memory units in the simulation chip; when the simulation chip rewrites the numerical values of the register or memory units, the numerical values in the mirror image register units corresponding to the register or memory units are also rewritten; when the simulation chip executes the user programs at full speed, the simulation management module reads the numerical value of each of the mirror image register units through an information reading channel; and the simulation management module transmits data to the debugging software of the PC in real time through a data channel, and the debugging software displays the received data in real time. A user can observe the real-time change condition of the concerned debugging information in operation of the user programs.

Description

technical field [0001] The invention relates to the field of emulators, in particular to an emulator capable of displaying debugging information concerned by customers in real time. Background technique [0002] There is a user program developed by the user in the processor chip. In the writing and debugging of the user program, the tool used is generally a processor chip emulator. The emulator uses an emulation chip that replaces the processor chip product chip, cooperates with the emulation control module, user program memory and other components in the emulator, and the debugging software on the PC side to realize the emulation debugging of the user program. The observation of debugging information is a basic and very important debugging method provided by the emulator. These debugging information include changes in data values ​​in memory, changes in register values, changes in program running pointers, and so on. In the existing emulator, the function of debugging info...

AI Technical Summary

Problems solved by technology

When the emulation chip of the existing emulator executes the user program, the emulator does not communicate with the emulation chip, so the emulator cannot take out various debugging information of the emulation chip in real time and send it to the debugging software on the PC side for the user to observe in real time

If the emulator and the emulation chip communicate to obtain debugging information in real time when the emulation chip is executing the user program, since the emulation chip processor is required to participate in the communication process, the emulation chip cannot execute the user program during the communication, which will greatly reduce the execution time of the emulation chip by the user. The speed of the program makes the effect of the user program executed on the emulator significantly different from that executed on the actual product chip, which is unacceptable to the user

Images