Comparison Between Static and Dynamic Program Instrumentation

The difference between static and dynamic program instrumentation lies in when the analysis or measurement probes are inserted into a program. Static instrumentation occurs before the program is run and is more closely associated with proactive software evaluation. Dynamic instrumentation, on the other hand, inserts probes during program execution.

• Program Instrumentation
• Static vs Dynamic
• Software Evaluation
• Dynamic Analysis

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Uploaded on Apr 19, 2024 | 5 Views

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1. EXERCISE #26 PROGRAM INSTRUMENTATION REVIEW Write your name and answer the following on a piece of paper What is the difference between static and dynamic program instrumentation? 1

2. ADMINISTRIVIA AND ANNOUNCEMENTS

3. STATIC INSTRUMENTATION EECS 677: Software Security Evaluation Drew Davidson

4. 4 WHERE WE RE AT EXPLORING PROGRAM INSTRUMENTATION An approach to dynamic analysis

5. 5 PREVIOUSLY: PROGRAM INSTRUMENTATION REVIEW: LAST LECTURE INSERTINGMEASUREMENTPROBES INTOAPROGRAM NOTABLEANALYSISTOOLS Lint The original analysis tool Splint Security analysis tool

6. 6 THIS LESSON: STATIC INSTRUMENTATION REVIEW: LAST LECTURE INSERTINGMEASUREMENTPROBES INTOAPROGRAM BEFOREITISRUN More closely associated with proactive software evaluation (why?)

7. 7 PATH FREQUENCY REVIEW: THE PROBLEM

8. 8 STATIC INSTRUMENTATION TOOLS PROGRAM INSTRUMENTATION: APPROACH OFTENBUILTRIGHTINTOCOMPILER LLVM Coverage tools GCC Coverage tools SOMETIMESBUILTUPONOPTIMIZER Google s closure compiler https://github.com/google/closure-compiler

9. 9 EXAMPLE: LLVM COVERAGE INSTRUMENTATION PROGRAM INSTRUMENTATION: APPROACH BIG IDEA: INJECT BASIC BLOCK COUNTERS LLVM Coverage tools

10. 10 EXAMPLE: LLVM COVERAGE INSTRUMENTATION PROGRAM INSTRUMENTATION: APPROACH LET STAKEITTOTHETERMINAL!

11. 11 CUSTOM INSTRUMENTATION PROGRAM INSTRUMENTATION: APPROACH THE PREVIOUS EXAMPLETOOKADVANTAGEOFPRE-EXISTING INSTRUMENTATION What if we wanted to make our own custom instrumentation?

12. 12 CUSTOM INSTRUMENTATION PROGRAM INSTRUMENTATION: APPROACH GETTINGSTARTED 1) Reference the LLVM API 2) Build our own (trivial) analysis pass 3) Hook into the LLVM opt infrastructure 4) Run our analysis pass GOING FURTHER Insert more full-featured functionality (https://llvm.org/doxygen/classllvm_1_1IRBuilder.html)

13. 13 TUTORIAL: CUSTOM LLVM INSTRUMENTATION PROGRAM INSTRUMENTATION: APPROACH LET STAKEITTOTHETERMINAL!

14. 14 WRAP-UP WE VE DESCRIBED 2 FORMS OF ALTERING THE PROGRAM More heuristic by nature