Implementation of the JacoDB interpreter #18
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
sergeypospelov
changed the title
sergeypospelov
force-pushed
the
sergey/jvm
branch
from
c118006
to
6e42f58
Compare
sergeypospelov
force-pushed
the
sergey/jvm
branch
4 times, most recently
from
02ae0b8
to
36d969f
Compare
sergeypospelov
changed the title
dvvrd
requested changes
Jun 27, 2023
usvm-core/src/main/kotlin/org/usvm/ps/stopstregies/StepsCountingStoppingStrategy.kt
Outdated
Show resolved
Hide resolved
usvm-core/src/main/kotlin/org/usvm/ps/stopstregies/TargetsCoveredStoppingStrategy.kt
Outdated
Show resolved
Hide resolved
usvm-jvm/src/main/kotlin/org/usvm/machine/JcApplicationGraph.kt
Outdated
Show resolved
Hide resolved
usvm-jvm/src/test/kotlin/org/usvm/operators/JcBinaryOperatorTest.kt
Outdated
Show resolved
Hide resolved
usvm-jvm/src/test/kotlin/org/usvm/operators/JcUnaryOperatorTest.kt
Outdated
Show resolved
Hide resolved
usvm-jvm/src/main/kotlin/org/usvm/machine/state/JcStateUtils.kt
Outdated
Show resolved
Hide resolved
sergeypospelov
force-pushed
the
sergey/jvm
branch
from
784c221
to
a6cdaff
Compare
Fix: not heapRefEq
… different size now
sergeypospelov
force-pushed
the
sergey/jvm
branch
from
a6cdaff
to
f42416e
Compare
CaelmBleidd
requested changes
Jun 28, 2023
usvm-core/src/main/kotlin/org/usvm/constraints/PathConstraints.kt
Outdated
Show resolved
Hide resolved
usvm-core/src/main/kotlin/org/usvm/ps/combinators/InterleavedSelector.kt
Outdated
Show resolved
Hide resolved
sergeypospelov
force-pushed
the
sergey/jvm
branch
from
3804497
to
6e1d827
Compare
sergeypospelov
force-pushed
the
sergey/jvm
branch
from
252b2c9
to
9c49644
Compare
sergeypospelov
force-pushed
the
sergey/jvm
branch
from
9c49644
to
2c9e6bd
Compare
CaelmBleidd
approved these changes
Jun 29, 2023
korifey
pushed a commit
that referenced
this pull request
Jul 12, 2023
Co-authored-by: Alexey Menshutin <alex.menshutin99@gmail.com>
korifey
pushed a commit
that referenced
this pull request
Jul 12, 2023
Co-authored-by: Alexey Menshutin <alex.menshutin99@gmail.com>
korifey
added a commit
that referenced
this pull request
Jul 13, 2023
* First version of logging for usvm * Implementation of the JacoDB interpreter (#18) Co-authored-by: Alexey Menshutin <alex.menshutin99@gmail.com> * New path selectors infrastructure (#29) * Add general framework for weighted searchers * Add tests for AA-tree and discrete PDF * Little typo fix in tests * Add shortest distance to targets weighter * Add random tree path selector * Add fork depth path selector * Fix interleaved path selector * Add comments and some new java tests, infrastructure fixes * PR comments fixes, add solver type and timeout options * First version of logging for usvm * synchronize with master --------- Co-authored-by: Sergey Pospelov <sergeypospelov59@gmail.com> Co-authored-by: Alexey Menshutin <alex.menshutin99@gmail.com> Co-authored-by: Maksim Parshin <mxprshn@gmail.com>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR adds an initial support of the JVM byte-code analysis. In addition, simple search strategies
DfsPathSelector,BfsPathSelectorand combinators were implemented, as well asTargetsCoveredStoppingStrategy. Also, some minor refactorings inusvm-corewere made.The PR includes some tests, comments and lots of TODOs in the code. The supported features and known issues are listed in #25.
Details
The overall architecture is very similar to the sample-language analyzer.
The JVM interpreter is based on JacoDB 3-address code, which is very similar to well-known Soot Jimple representation.
JcMachineJcMachineis an entry point of analysis, and it takes aJcClasspathas a dependency. Some varying features, like search strategy, are hard-coded for simplicity now.JcApplicationGraphJcApplicationGraphis a wrapper for JacoDB application graph, which simply delegates calls to it.JcStateJcStateextendsUStatewith aJcMethodResultfield, which represents a current result of a method execution, other components are the same.JcInterpreterJcIntepreteris very similar toSampleInterpreter, except that it isn't responsible for handling calls. It also provides an initial support for handling exceptions, but without catch blocks now.JcExprResolverJcExprResolverperforms an actual symbolic execution, handling allJcExpressions. The primitive types are handled based on their size, meaning that, e.g.charis represented by bit-vectors of 16 bits. There is a known issue inJacoDBabout incorrect types for operations with integrals likecharorshort, so some tests are disabled now.Changes in
usvm-coreUHeapRefandUSizeExpr, instead of just aUSizeExprUReadOnlyMemoryInterfaceimplemented byUMemoryBaseandUModelBaseURegistersStacka little bitUArrayLengthLValueTODO: