DynamoRIO

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.

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

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.

Downloading DynamoRIO

DynamoRIO is available free of charge as a binary package for both Windows and Linux. DynamoRIO’s source code is available under a BSD license.

Obtaining Help

Use the discussion list to ask questions.

To report a bug, use the issue tracker.