Nicholas Nethercote

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Dynamic binary instrumentation (DBI) frameworks make it easy to build dynamic binary analysis (DBA) tools such as checkers and profilers. Much of the focus on DBI frameworks has been on performance; little attention has been paid to their capabilities. As a result, we believe the potential of DBI has not been fully exploited. In this paper we describe(More)
There is no standard modelling language for constraint programming (CP) problems. Most solvers have their own modelling language. This makes it difficult for modellers to experiment with different solvers for a problem. In this paper we present MiniZinc, a simple but expressive CP modelling language which is suitable for modelling problems for a range of(More)
We present Memcheck, a tool that has been implemented with the dynamic binary instrumentation framework Valgrind. Memcheck detects a wide range of memory errors in programs as they run. This paper focuses on one kind of error that Memcheck detects: undefined value errors. Such errors are common, and often cause bugs that are hard to find in programs written(More)
Dynamic binary analysis (DBA) tools such as profilers and checkers help programmers create better software. Dynamic binary instrumentation (DBI) frameworks make it easy to build new DBA tools. This dissertation advances the theory and practice of dynamic binary analysis and instrumentation, with an emphasis on the importance of the use and support of(More)
Zinc is a new modelling language developed as part of the G12 project. It has four important characteristics. First, Zinc allows specification of models using a natural mathematical-like notation. To do so it supports overloaded functions and predicates and automatic coercion and provides arithmetic, finite domain and set constraints. Second, while Zinc is(More)
Programs sometimes crash due to unusable values, for example, when Java and C# programs dereference null pointers and when C and C++ programs use undefined values to affect program behavior. A stack trace produced on such a crash identifies the effect of the unusable value, not its cause, and is often not much help to the programmer. This paper presents(More)
Explicit Data Graph Execution (EDGE) architectures offer the possibility of high instruction-level parallelism with energy efficiency. In EDGE architectures, the compiler breaks a program into a sequence of structured blocks that the hardware executes atomically. The instructions within each block communicate directly, instead of communicating through(More)