CPU abnormal point positioning diagnosis method based MIPS structure

Abstract

The present invention provides a MIPS-architecture-based CPU outlier location diagnosis method which including the following procedures: machine codes of a present function is scanned; a migration in instructions on constructing a function stack is analyzed and a function stack pointer of an invoking function is computed; the migration in the storage function of a return address is analyzed, the storage location of the return address in the function stack of the present function is computed and the return address is received. The function stack pointer of the call function and the return address obtained according to the present invention can output a call relation of the present function so as to locate and diagnose failure.

Description

technical field [0001] The present invention relates to the field of data communication, in particular to a kind of data communication product based on MIPS (Million Instructions Per Second, the number of millions of machine language instructions processed per second) CPU architecture when abnormality occurs due to hardware or software reasons during operation Outlier location diagnosis method. Background technique [0002] With the rapid development of data communication technology, various data communication products are constantly updated, such as switches, routers, etc. are very complex systems, including complex hardware devices, running millions of machine instructions at the same time. As a result, in the process of system operation, once a hardware or software failure occurs, the location and diagnosis of the abnormal point of the failure is particularly important. In general, the following problems often occur during system operation: [0003] 1. During the produc...

AI Technical Summary

Problems solved by technology

[0011] In this way, when some faults occur during the execution of the CPU based on the MIPS architecture, it is impossible to trace back to the calling function according to the error function, which brings inconvenience to fault diagnosis and positioning.

[0012] 2. Hardware fault location

However, the MIPS architecture CPU cannot do this due to its loose function stack structure. When a fault occurs, it can only point out the abnormal instruction and cannot print out the function call.

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