DynamoRIO Overview 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) 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 online cache simulator 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

http://www.dynamorio.org/