commit | b73a792ab8625994d0d0bfc6224e2eab0f18a9f6 | [log] [tgz] |
---|---|---|
author | Derek Bruening <bruening@google.com> | Fri Sep 09 19:17:23 2022 |
committer | GitHub <noreply@github.com> | Fri Sep 09 19:17:23 2022 |
tree | 44eb0961fcebdfd5763b03e3831ca1ac4903a072 | |
parent | 2de559c48d7f03aed73d19eaea86f3eb3158e2cc [diff] |
i#5636: Fix elided duplicate timestamps (#5643) PR #5633 added code to skip the duplicate timestamps at the top of each chunk: but its logic assumed there would never be two legitimate timestamps with identical values. That does happen, in particular in our online-drcachesim tests on Windows. This resulted in the invariant_checker not seeing some timestamp entries, causing its exception for non-fetched instrs across thread switches to not apply and resulting in invariant error reports. We fix this by skipping the first timestamp in each chunk by instruction count instead. We'll want the insruction and chunk counts for #5538 and I was about to add those fields in any case. Fixes #5636
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.
DynamoRIO is the basis for some well-known external tools:
Tools built on DynamoRIO and available in the release package include:
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.
DynamoRIO is available free of charge as a binary package for both Windows and Linux. DynamoRIO's source code is available primarily under a BSD license.
Use the discussion list to ask questions.
To report a bug, use the issue tracker.
See also the DynamoRIO home page: http://dynamorio.org/