Debug method suitable for multi-processor core system chip

Abstract

The invention discloses a debug method suitable for a multiprocessor core system chip: a virtual main control processor core module (111) operating on a host machine is used to simulate a main control processor and a debugging control station program, take charge of sending and receiving commands, control the debugging of the multiprocessor core system chip, send a debugging command to a physical operation debugging service station module (131) of each processor core and receive responsive information to a software debugger (110) which runs on the host computer and is provided with a patterned interface. The debug method suitable for the multiprocessor nuclear system chip occupies small hardware resource, utilizes software to debug, has strong portability and is suitable for the network platform debugging of / on the multiprocessor nuclear system chip.

Description

technical field [0001] The invention relates to a debugging method suitable for multi-processor core system chips. Background technique [0002] Driven by the development of transistor technology and application requirements in recent years, the design of embedded chips has moved from a single-processor core system to a multi-processor core System-on-Chip (MPSoC). How to debug the program running on the multi-processor core SoC has become an urgent problem to be solved. [0003] There are two types of debugging methods for traditional single-core processor programs: software and hardware. Software debugging methods such as GNU Debugger (GDB) run on the host machine, GDB Stub runs on the processor, GDB provides the user with information about the program being debugged, and sends debugging requests to GDB Stub, such as checking the value of the register, GDB Stub according to the debugging request Perform corresponding processing and feedback information to GDB. The hardwa...

AI Technical Summary

Problems solved by technology

The advantage of the software method is that the cost of hardware added to support debugging is low, and only the processor core is required to support breakpoints, breakpoint instructions, and exception handling mechanisms; the disadvantage is that the debugging speed is not as fast as the hardware method

The advantage of the hardware method is that the debugging speed is fast, does not affect the result, and is low intrusiveness (debugging does not occupy system resources, does not change the behavior of program execution, and does not affect the result); the disadvantage is that the hardware cost is high, the development cycle, chip area and power consumption have increased; when integrating multiple processors, if each core increases the debugging interface, the chip area and power consumption will increase

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