Processor Chip Emulator

Abstract

The invention discloses a processor chip simulator, comprising a simulation chip, a monitoring module, and integrated development environment software and interface software installed on a user computer. A processor state register and a PC ((Program Counter) record register are arranged in the simulation chip. The monitoring module is connected with the simulation chip through an access interface, is connected with the user computer through a debugging interface and carries out information transmission with the interface software. The interface software carries out information transmission with the integrated development environment software through a communication interface. If the interface software discovers that the simulation chip is in a low power consumption mode, content of the PC record register is read through the monitoring module. The information indicating that the simulation chip is in the low power consumption mode and the content of the PC record register are returned to the integrated development environment software. The integrated development environment software displays the fact that the simulation chip is currently in the lower power consumption state. According to the processor chip simulator, a user program can be developed and debugged conveniently and the development efficiency of the user program is improved.

Description

technical field [0001] The invention relates to the field of emulators, in particular to a processor chip emulator. 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 an emulator. The emulator uses an emulation chip containing various functions of the product processor chip to simulate the working behavior of the product processor chip, and the emulation chip and other parts of the emulator (program memory for storing user programs, data memory for storing data, and user The integrated development environment on the computer, etc.) cooperates to realize the simulation operation of the user program and various debugging functions. [0003] Many processor chips are designed with a low power consumption mode, which can control the processor to enter the low power consumption mode after executing the user program configuration statement. In order to meet ...

AI Technical Summary

Problems solved by technology

In this way, when the emulator executes the user program at full speed and enters the low-power mode, the user issues an instruction to stop the user program from being executed at full speed through the integrated development environment, or the user executes the configuration processor chip to enter the low-power consumption mode in a single step through the integrated development environment. After the user program statement in power consumption mode, because the emulation chip enters the low power consumption mode, the monitoring program statement for exporting the chip state cannot be executed, and the chip state data cannot be returned to the integrated development environment, or the returned data is abnormal (for example, not within the normal range ), resulting in the integrated development environment being unable to obtain the response data returned by the emulator or the data is abnormal, and after stopping the full-speed operation or stepping through the user program statement, there is no response, crash, restart or display abnormal chip status parameters, giving Debugging user programs by users causes troubles and affects development efficiency

Some existing emulators do not implement low power consumption mode in the emulation chip of the emulator to avoid the above problems, but this also causes functional differences between the emulator and the actual chip, which is not conducive to emulator-based User program development, debugging and testing

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