Embedded system progress abnormal tracking position-finding method

Abstract

The invention discloses a tracking ordination method for process exception in an embedded system, and solves the problems that with prior exception tracking tools that the needed memory space is large, the configuring is inconvenient, and the version support needs to be debugged in the exception tracking tool. The invention extracts a program address where the exception occurs, the content of each register of a processor, the name of a executable file in which the exception occurs according to the memory information of the process when the exception occurs, and intelligently backtracks out the calling sequence of function when the exception occurs, the name and the associated file of the called function; the information is preserved in a file, through which the contents such as the function that causes the process exception, the name of the function, the process pointer, etc. are clearly seen, thereby locating a code position where the exception occurs. The preserved file removes unnecessary redundant information at the same time, thus the volume of the preserved file is small, thereby being more particular applied to the high-end embedded system such as an intelligent cellphone, a PDA (Personal Digital Assistant), etc.

Description

technical field [0001] The invention relates to an abnormal processing method of a process in an embedded system, in particular to a method for processing and extracting abnormal information of an abnormal process. Background technique [0002] In high-end embedded systems such as PDAs and smart phones, it is required to provide complex applications such as word processing, GUI interface, media player, etc., and users can install and uninstall new programs, such as games, tools, etc. by themselves. The traditional embedded operating system can no longer meet the needs. Therefore, more complex operating systems such as Linux operating system and WinCE operating system are used in high-end embedded systems. Compared with traditional embedded operating systems, these operating systems have the following characteristics: [0003] 1. The kernel running space is separated from the user program running space, so that the error of the user process will not cause the collapse of th...

AI Technical Summary

Problems solved by technology

[0008] 1. These tools require to save the debugging version corresponding to the user program, otherwise, the source code where the exception occurs cannot be located, and the stack call sequence where the exception occurs cannot be obtained. Therefore, it is more troublesome to use, especially when the product has been released , it is difficult to use this method for exceptions that occur in user programs;

[0009] 2. The application program and the runtime library are dynamically linked. If the configuration of the exception tracking tool library is different from the configuration of the library when the program is running, it will also cause the exception to be unable to be located or wrongly located;

[0012] 1. First of all, they can only be used when the physical address space is running, and cannot be used when the virtual and real address spaces are separated in high-end embedded operating systems;

[0013] 2. Secondly, they can only be used when the application program is statically linked to the runtime library, and are not suitable for the use of dynamic link libraries in high-end embedded operating systems;

[0014] 3. Finally, they also require that the application program must be a debug version, and must have debugging information when compiling, otherwise the function name cannot be parsed

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