commit | 5bd7ce5b3ca5bdaa9ef179e45b567bd0ae813609 | [log] [tgz] |
---|---|---|
author | Jack Gallagher <jack.gallagher@arm.com> | Fri Feb 09 09:54:25 2024 |
committer | GitHub <noreply@github.com> | Fri Feb 09 09:54:25 2024 |
tree | ef2872eb9caef8a410b078e6a7a8b4d8f5056dee | |
parent | 55da514b7dbb00092029e053e118dcf6ddd1bfe6 [diff] |
i#6585: Add drcachesim vector length trace marker (#6603) Adds a new trace marker 'TRACE_MARKER_TYPE_DYNAMIC_VECTOR_LENGTH' to drcachesim that indicates the current vector length for architectures which have a dynamic vector length that can't be statically determined from the instruction. The marker is emitted as part of the thread header when running on AArch64 with SVE support, but in the future could also be used to track changes in the vector length after prctl(PR_SVE_SET_VL, ..) system calls (i#6625). Some SVE load and store instructions such as LDR <Zt>, [<Xn|SP>{, #<imm>, MUL VL}] or ST1D { <Zt>.D }, <Pg>, [<Xn|SP>{, #<imm>, MUL VL}] scale the immediate offset based on the hardware vector length so knowing the correct vector length for the traced application is important to properly decode and analyse these instructions. Fixes: #6585 Issues: #6625
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/