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Opcode analysis program
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Opcode analysis program
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This program is designed to help look at the frequency of opcodes, and the
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This program is designed to help look at the frequency of opcodes, and the
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occurance of groups of opcodes together.
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occurance of groups of opcodes together.
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This can also be done on the command line, but it was felt, at the time a C
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It takes input from a file, and generates output to stdout via printf.
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program might be a quicker way. 3 hours later, it's not the author's intention
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to now try doing this with sed, awk and sort.
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The list of instructions/opcodes should be one per line, with a newline at the
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The list of instructions/opcodes should be one per line, with a newline at the
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end. There is no capability to look at register numbers. An example of
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end. There is no capability to look at register numbers. An example of
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generating suitable input to the program is given below.
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generating suitable input to the program is given below.
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Two output formats are possible - switchable by the #define DISPLAY options in
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the C source.
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1) Human readable output, enabled by uncommenting the DISPLAY_STRING define
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2) CSV output, enabled by uncommenting the DISPLAY_CSV define
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At the moment this program only analyses up to quadruples, and is not codeded
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At the moment this program only analyses up to quadruples, and is not codeded
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in such a way that makes an arbitrary number of instruction groups easily
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in such a way that makes an arbitrary number of instruction groups easily
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testable. Fix this if you like.
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testable. Fix this if you like.
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There are no options when running the program. It will simply spit out a list
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There are no options when running the program. It will simply spit out a list
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of individual opcodes, then list of pairs, triples and quadruples.
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of individual opcodes, then list of pairs, triples and quadruples, in one of
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the two formats described above.
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Compile the program with
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Compile the program with
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$ make all
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$ make all
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Generate a list of opcodes from a large set of code, with the following:
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Generate a list of opcodes from a large set of code, with the following:
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argument. It's best to pipe the output it generates to a file:
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argument. It's best to pipe the output it generates to a file:
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$ opcodeanalysis opcodes > opcodes.analsys
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$ opcodeanalysis opcodes > opcodes.analsys
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Things that might be good:
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Things that might be good:
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* Actually verifying the pair/triple/quadruple results are correct/true
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* Actually verifying the pair/triple/quadruple results are correct/true
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* Limiting the output of set results to the first 5/10/20
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* Provide an option to perform register analysis, also.
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* Provide an option to perform register analysis, also.
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* Generate CSV formatted output
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Julius Baxter
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Julius Baxter
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14 July, 2010
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15 July, 2010
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15 July, 2010
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15 July, 2010
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