DynamoRIO is a runtime code manipulation system that supports code transformations on any part of a program, while it executes. DynamoRIO exports an interface for building dynamic tools for a wide variety of uses: program analysis and understanding, profiling, instrumentation, optimization, translation, etc. Unlike many dynamic tool systems, DynamoRIO is not limited to insertion of callouts/trampolines and allows arbitrary modifications to application instructions via a powerful IA-32/AMD64/ARM/AArch64 instruction manipulation library. DynamoRIO provides efficient, transparent, and comprehensive manipulation of unmodified applications running on stock operating systems (Windows, Linux, or Android, with experimental Mac support) and commodity IA-32, AMD64, ARM, and AArch64 hardware.
Existing DynamoRIO-based tools
Tools built on DynamoRIO and available in the release package include:
- The memory debugging tool Dr. Memory
- The multi-process cache simulator and memory address trace collection and analysis platform drcachesim
- The legacy processor emulator drcpusim
- The “strace for Windows” tool drstrace
- The code coverage tool drcov
- The library tracing tool drltrace
- The memory tracing tool memtrace
- The instruction tracing tool instrace
- The basic block tracing tool bbbuf
- The instruction counting tool inscount
- The dynamic fuzz testing tool Dr. Fuzz
Building Your Own Custom Tools
DynamoRIO’s powerful API abstracts away the details of the underlying infrastructure and allows the tool builder to concentrate on analyzing or modifying the application’s runtime code stream. API documentation is included in the release package and can also be browsed online. Slides from our past tutorials are also available.
Use the discussion list to ask questions.
To report a bug, use the issue tracker.