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chromium / external / github.com / DynamoRIO / dynamorio / refs/tags/cronbuild-8.0.18547
commit5cbe8113c919b557f7bfc3daafffc9b1fef7938c[log] [tgz]
authorDerek Bruening <bruening@google.com>Mon Oct 12 15:42:55 2020
committerGitHub <noreply@github.com>Mon Oct 12 15:42:55 2020
tree1cfcf73bd004ad0167337ce36828da5c2513ba9f
parent08f48f398ff1f4c913be450207380e9d6f59bc01 [diff]
i#4091: Fix crash due to AMD stack segment bug (#4485)

On AMD there is a processor bug where the stack segment descriptor is
corrupted after a mode switch from 64-bit to 32-bit which coincides
with a thread context switch.  We fix that by re-loading the
descriptor from the selector, using the value observed at
initialization time.

Duplicate symbol errors which are somehow raised in VS2017 with the
new drlibc call from the core are resolved by moving
d_r_internal_error and d_r_ignore_assert to their own source files.

Tested on an Intel processor and also on several AMD processors where
the crash was readily reproducible without this fix: see comments in the issue.

Fixes #4091
7 files changed
tree: 1cfcf73bd004ad0167337ce36828da5c2513ba9f
  1. .github/
  2. api/
  3. clients/
  4. core/
  5. ext/
  6. libutil/
  7. make/
  8. suite/
  9. third_party/
  10. tools/
  11. .appveyor.yml
  12. .clang-format
  13. .travis.yml
  14. ACKNOWLEDGEMENTS
  15. CMakeLists.txt
  16. CONTRIBUTING.md
  17. CTestConfig.cmake
  18. License.txt
  19. README
  20. README.md
README.md

DynamoRIO

DynamoRIO logo

About 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) and commodity IA-32, AMD64, ARM, and AArch64 hardware. Mac OSX support is in progress.

Existing DynamoRIO-based tools

Tools built on DynamoRIO and provided in our 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 disassembly tool drdisas
  • The memory tracing tool memtrace
  • The basic block tracing tool bbbuf
  • The instruction counting tool inscount

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.

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.

See also the DynamoRIO home page: http://dynamorio.org/