Method and device for parsing and processing call stack

Abstract

The embodiment of the invention provides a call stack analyzing and processing method and device. The method comprises the following steps: searching layer by layer according to a preset byte number, judging if the search value of a current position is a valid return address value, if yes, then obtaining the valid return address value and the stack pointer of the current position; obtaining the size of the open stack and the storage offset of the valid return address value in the layer; connecting each valid return address value in series according to the corresponding stack pointer and the size of the open stack and the storage offset in the layer, and obtaining a candidate call stack; and screening out an objective call stack from at least one candidate call stack according to a preset screening rule. According to the embodiment of the invention, a plurality of valid RA (return address) values are obtained, the valid RA values and the excitation functions of the valid RA values are judged, and then the valid RA values are connected in series to get at least one candidate call stack from which the objective call stack is screened out, so that a preferred call stack analysis result is obtained.

Description

technical field [0001] The embodiment of the present invention relates to a call stack analysis technology, in particular to a call stack analysis processing method and device. Background technique [0002] Usually, when debugging software, you need to view the call stack of the current function, which is a function call chain that reflects the function call relationship. For example, function f1 calls function f2, and function f2 calls function f3, then f1→f2→f3 is a call stack. Specifically, there may be multiple calling situations between one function and another function. For example, the call stack of function f1 to function f3 can be f1→f2→f3, or f1→f4→f5→f3. Therefore, when When an exception occurs in the program, an error is detected, or a breakpoint is interrupted, it is necessary to view the current call stack of the current function. [0003] In the prior art, the common way to view the call stack of the current function is the X86 call stack parsing method. In ...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for parsing and processing the call stack to solve the problem that the call stack cannot be obtained when the register field in the call stack is missing or destroyed

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