Method for detecting error of program control flow
A technology of error detection and control flow, applied in the direction of program control design, error detection/correction, instrumentation, etc., can solve problems such as difficult to handle nested calls and recursive calls, unresolved reliability and performance, and increased impact on program performance
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[0057] figure 1 is a schematic diagram of the basic block label format.
[0058] The basic block tag consists of two parts: the basic tag encoding and the encoding used for the detection of control flow inside the basic block. The basic label encoding of each basic block is the encoding of the sequence number of the basic block in the general basic block list of the program, which is unique; and the encoding of the internal control flow detection of the basic block is the internal control flow detection instruction required by the block. Binary encoding of the count, which accounts for the last few bits of the entire basic block label.
[0059] figure 2 is the general flow chart of the present invention. Include the following steps:
[0060] In the first step, the program that needs to be checked for control flow is compiled into assembly code by the compiler.
[0061] The second step is to identify the basic blocks of the program based on the program assembly code and d...
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