Call stack backtracking method and device of embedded system and computer equipment

Abstract

The invention relates to the field of computers, and provides a call stack backtracking method and device of an embedded system and computer equipment. The method comprises the following steps: compiling and linking a program source code file based on a specified compiling command and a downtime exception handling program to generate a target file in an ELF format, wherein the specified compiling command is used for recording an initial address of a function stack frame; when the system is abnormal, storing the register information and the function stack frame corresponding to the target file, and executing a downtime exception processing program, wherein the register information comprises an FP register and an LR register; analyzing the function stack frame based on an FP register and an LR register through a downtime exception handling program to obtain a calling address table of an abnormal target function; and analyzing call stack backtracking information of the address in the call address table in the target file by adopting a preset address analysis tool. By adopting the method, the complete calling relation can be backtracked more efficiently and accurately.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a call stack backtracking method, device and computer equipment for an embedded system. Background technique [0002] During the development, debugging and testing of embedded MCU (Microcontroller Unit, micro control unit) software, various downtime phenomena due to software design defects are often encountered. For the downtime problem of the embedded MCU software system, at present, it is mainly based on the contents of the CPU (Central Processing Unit, central processing unit) core register, combined with the disassembly code, to check and repair the design defects of the code. However, this method has high requirements for developers, and requires developers to have a deeper understanding and understanding of CPU architecture, registers, operation and exception mechanisms, and program compilation principles; Backtracking upwards at the function location of the do...

AI Technical Summary

Problems solved by technology

However, this method has high requirements for developers, and requires developers to have a deeper understanding and understanding of CPU architecture, registers, operation and exception mechanisms, and program compilation principles; Backtracking and inferring the complete execution call relationship at the function location of the downtime, so that the system cannot be troubleshooted and recovered in an effective and timely manner, which has a relatively large impact on the efficiency of software development and testing

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