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Author : Jeffrey J. Joyce
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (43 download)
Download or read book A Verified Compiler for a Verified Microprocessor written by Jeffrey J. Joyce and published by . This book was released on 1989 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David S. Hardin
Publisher : Springer Science & Business Media
ISBN 13 : 1441915397
Total Pages : 441 pages
Book Rating : 4.4/5 (419 download)
Download or read book Design and Verification of Microprocessor Systems for High-Assurance Applications written by David S. Hardin and published by Springer Science & Business Media. This book was released on 2010-03-02 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microprocessors increasingly control and monitor our most critical systems, including automobiles, airliners, medical systems, transportation grids, and defense systems. The relentless march of semiconductor process technology has given engineers exponentially increasing transistor budgets at constant recurring cost. This has encouraged increased functional integration onto a single die, as well as increased architectural sophistication of the functional units themselves. Additionally, design cycle times are decreasing, thus putting increased schedule pressure on engineers. Not surprisingly, this environment has led to a number of uncaught design flaws. Traditional simulation-based design verification has not kept up with the scale or pace of modern microprocessor system design. Formal verification methods offer the promise of improved bug-finding capability, as well as the ability to establish functional correctness of a detailed design relative to a high-level specification. However, widespread use of formal methods has had to await breakthroughs in automated reasoning, integration with engineering design languages and processes, scalability, and usability. This book presents several breakthrough design and verification techniques that allow these powerful formal methods to be employed in the real world of high-assurance microprocessor system design.
Author : Paul Curzon
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (321 download)
Download or read book Of what Use is a Verified Compiler Specification? written by Paul Curzon and published by . This book was released on 1992 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Eric Mullen
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (18 download)
Download or read book Pushing the Limits of Compiler Verification written by Eric Mullen and published by . This book was released on 2018 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern computer systems rely on the correctness of at least one compiler for correct operation. Formal verification is a powerful technique for constructing correct systems. While there have been many efforts to develop formally verified compilers, those compilers are still not widely used. In this thesis, I present two major systems developments and one case study which push the limits of compiler verification, towards more and better verified compilers. Œuf: Verifying systems by implementing them in the programming language of a proof assistant (e.g., Gallina for Coq) lets us directly leverage the full power of the proof assistant for verifying the system. But, to execute such an implementation requires extraction, a large complicated process that is in the trusted computing base (TCB). Here I present Œuf, a verified compiler from a subset of Gallina to assembly. Œuf's correctness theorem ensures that compilation preserves the semantics of the source Gallina program. I describe how Œuf's specification can be used as a foreign function interface to reason about the interaction between compiled Gallina programs and surrounding shim code. Additionally, Œuf maintains a small TCB for its front-end by reflecting Gallina programs to Œuf source and automatically ensuring equivalence using computational denotation. This design enabled my collaborators and me to implement some early compiler passes (e.g., lambda lifting) in the untrusted reflection and ensure their correctness via translation validation. To evaluate Œuf, we compile Appel’s SHA256 specification from Gallina to x86 and write a shim for the generated code, yielding a verified sha256sum implementation with a small TCB. Using Œuf: Œufwas developed in order to allow verified systems to be developed and verified in Coq, compiled to executable code using Œuf, with all guarantees proven at the Gallina level preserved through compilation to the assembly level. In order to evaluate this goal, I built the WordFreq verified system in Coq, compiled it with Œuf, and preserve the correctness guarantee through to the generated assembly code. Here I present the WordFreq verified system, its correctness guarantee, and the major parts of its correctness proof. I discuss the development of the system and its proof, as well as the axiomatic primitives necessary to tie it together. Peek: Transformations over assembly code are common in many compilers. These transformations are also some of the most bug-dense compiler components. Such bugs could be eliminated by formally verifying the compiler, but state-of-the-art formally verified compilers like CompCert do not support assembly-level program transformations. Here I present Peek, a framework for expressing, verifying, and running meaning-preserving assembly-level program transformations in CompCert. Peek contributes four new components: a lower level semantics for CompCert x86 syntax, a liveness analysis, a library for expressing and verifying peephole optimizations, and a verified peephole optimization pass built into CompCert. Each of these is accompanied by a correctness proof in Coq against realistic assumptions about the calling convention and the system memory allocator. Verifying peephole optimizations in Peek requires proving only a set of local properties, which my collaborators and I have proved are sufficient to ensure global transformation correctness. We have proven these local properties for 28 peephole transformations from the literature. Here I discuss the development of our new assembly semantics, liveness analysis, representation of program transformations, and execution engine; describe the verification challenges of each component; and detail techniques we applied to mitigate the proof burden.
Author : Paul Curzon
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (321 download)
Download or read book A Verified Vista Implementation written by Paul Curzon and published by . This book was released on 1993 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "We describe the formal verification of a simple compiler using the HOL theorem proving system. The language and microprocessor considered are a subset of the structured assembly language Vista, and the VIPER microprocessor, respectively. We describe how our work is directly applicable to a family of languages and compilers and discuss how the correctness theorem and verified compiler fit into a wider context of ensuring that object code is correct. We first show how the compiler correctness result can be formally combined with a proof system for application programs. We then show how our verified compiler, despite not being written in a traditional programming language, can be used to produce compiled code. We also discuss how a dependable implementation might be obtained."
Author : Jeffrey J. Joyce
Publisher :
ISBN 13 :
Total Pages : 67 pages
Book Rating : 4.:/5 (475 download)
Download or read book A Verified Compiler for a Verified Microprocesor written by Jeffrey J. Joyce and published by . This book was released on 1989 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andrew W. Appel
Publisher : Cambridge University Press
ISBN 13 : 110704801X
Total Pages : 469 pages
Book Rating : 4.1/5 (7 download)
Download or read book Program Logics for Certified Compilers written by Andrew W. Appel and published by Cambridge University Press. This book was released on 2014-04-21 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: This tutorial for graduate students covers practical and theoretical aspects of separation logic with constructions and proofs in Coq.
Author : Wolfgang Polak
Publisher : Springer
ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.3/5 (91 download)
Download or read book Compiler Specification and Verification written by Wolfgang Polak and published by Springer. This book was released on 1981 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: The formal specification, design, implementation, and verification of a compiler for a Pascal-like language is described. All components of the compilation process such as scanning, parsing, type checking, and code generation are considered. The implemented language contains most control structures of Pascal, recursive procedures and functions, and jumps. It provides user defined data types including arrays, records, and pointers. A simple facility for input-output is provided. The target language assumes a stack machine including a display mechanism to handle procedure and function calls. The compiler itself is written in Pascal Plus, a dialect of Pascal accepted by the Stanford verifier. The Stanford verifier is used to give a complete formal machine checked verification of the compiler. One of the main problem areas considered is the formal mathematical treatment of programming languages and compilers suitable as input for automated program verification systems. Several technical and methodological problems of mechanically verifying large software systems are considered. Some new verification techniques are developed, notably methods to reason about pointers, fixed points, and quantification. These techniques are of general importance and are not limited to compiler verification. The result of this research demonstrates that construction of large correct programs is possible with the existing verification technology. It indicates that verification will become a useful software engineering tool in the future. Several problem areas of current verification systems are pointed out and areas for future research are outlined. (Author).
Author : Markus Müller-Olm
Publisher : Springer
ISBN 13 : 9783662167144
Total Pages : 260 pages
Book Rating : 4.1/5 (671 download)
Download or read book Modular Compiler Verification written by Markus Müller-Olm and published by Springer. This book was released on 2014-03-12 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the verified design of a code generator translating a prototypic real-time programming language to an actual microprocessor, the Inmos Transputer. Unlike most other work on compiler verification, and with particular emphasis on modularity, it systematically covers correctness of translation down to actual machine code, a necessity in the area of safety-critical systems. The formal framework provided as well as the novel proof-engineering ideas incorporated in the verified code generator are also of relevance for software design in general.
Author : Adam Chlipala
Publisher : MIT Press
ISBN 13 : 0262317885
Total Pages : 437 pages
Book Rating : 4.2/5 (623 download)
Download or read book Certified Programming with Dependent Types written by Adam Chlipala and published by MIT Press. This book was released on 2013-12-06 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: A handbook to the Coq software for writing and checking mathematical proofs, with a practical engineering focus. The technology of mechanized program verification can play a supporting role in many kinds of research projects in computer science, and related tools for formal proof-checking are seeing increasing adoption in mathematics and engineering. This book provides an introduction to the Coq software for writing and checking mathematical proofs. It takes a practical engineering focus throughout, emphasizing techniques that will help users to build, understand, and maintain large Coq developments and minimize the cost of code change over time. Two topics, rarely discussed elsewhere, are covered in detail: effective dependently typed programming (making productive use of a feature at the heart of the Coq system) and construction of domain-specific proof tactics. Almost every subject covered is also relevant to interactive computer theorem proving in general, not just program verification, demonstrated through examples of verified programs applied in many different sorts of formalizations. The book develops a unique automated proof style and applies it throughout; even experienced Coq users may benefit from reading about basic Coq concepts from this novel perspective. The book also offers a library of tactics, or programs that find proofs, designed for use with examples in the book. Readers will acquire the necessary skills to reimplement these tactics in other settings by the end of the book. All of the code appearing in the book is freely available online.
Author : Graham Birtwistle
Publisher : Springer Science & Business Media
ISBN 13 : 1461320070
Total Pages : 405 pages
Book Rating : 4.4/5 (613 download)
Download or read book VLSI Specification, Verification and Synthesis written by Graham Birtwistle and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: VLSI Specification, Verification and Synthesis Proceedings of a workshop held in Calgary from 12-16 January 1987. The collection of papers in this book represents some of the discussions and presentations at a workshop on hardware verification held in Calgary, January 12-16 1987. The thrust of the workshop was to give the floor to a few leading researchers involved in the use of formal approaches to VLSI design, and provide them ample time to develop not only their latest ideas but also the evolution of these ideas. In contrast to simulation, where the objective is to assist in detecting errors in system behavior in the case of some selected inputs, the intent of hardware verification is to formally prove that a chip design meets a specification of its intended behavior (for all acceptable inputs). There are several important applications where formal verification of designs may be argued to be cost-effective. Examples include hardware components used in "safety critical" applications such as flight control, industrial plants, and medical life-support systems (such as pacemakers). The problems are of such magnitude in certain defense applications that the UK Ministry of Defense feels it cannot rely on commercial chips and has embarked on a program of producing formally verified chips to its own specification. Hospital, civil aviation, and transport boards in the UK will also use these chips. A second application domain for verification is afforded by industry where specific chips may be used in high volume or be remotely placed.
Author : Jeffrey J. Joyce
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (43 download)
Download or read book Totally Verified Systems written by Jeffrey J. Joyce and published by . This book was released on 1989 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "We describe exploratory efforts to design and verify a compiler for a formally verified microprocessor as one aspect of the eventual goal of building totally verified systems. Together with a formal proof of correctness for the microprocessor, this yields a precise and rigorously established link between the semantics of the source language and the execution of compiled code by the fabricated microchip. we describe, in particular: (1) how the limitations of real hardware influenced this proof; and (2) how the general framework provided by higher-order logic was used to formalize the compiler correctness problem for a hierarchially structured language."
Author : J Strother Moore
Publisher : Springer
ISBN 13 : 0585336547
Total Pages : 322 pages
Book Rating : 4.5/5 (853 download)
Download or read book Piton written by J Strother Moore and published by Springer. This book was released on 2007-08-28 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountaineers use pitons to protect themselves from falls. The lead climber wears a harness to which a rope is tied. As the climber ascends, the rope is paid out by a partner on the ground. As described thus far, the climber receives no protection from the rope or the partner. However, the climber generally carries several spike-like pitons and stops when possible to drive one into a small crack or crevice in the rock face. After climbing just above the piton, the climber clips the rope to the piton, using slings and carabiners. A subsequent fall would result in the climber hanging from the piton—if the piton stays in the rock, the slings and carabiners do not fail, the rope does not break, the partner is holding the rope taut and secure, and the climber had not climbed too high above the piton before falling. The climber's safety clearly depends on all of the components of the system. But the piton is distinguished because it connects the natural to the artificial. In 1987 I designed an assembly-level language for Warren Hunt's FM8501 verified microprocessor. I wanted the language to be conveniently used as the object code produced by verified compilers. Thus, I envisioned the language as the first software link in a trusted chain from verified hardware to verified applications programs. Thinking of the hardware as the "rock" I named the language "Piton.
Author : Kim G. Larsen
Publisher : Springer Science & Business Media
ISBN 13 : 9783540551799
Total Pages : 504 pages
Book Rating : 4.5/5 (517 download)
Download or read book Computer Aided Verification written by Kim G. Larsen and published by Springer Science & Business Media. This book was released on 1992-04-22 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the third International Workshop on Computer Aided Verification, CAV '91, held in Aalborg, Denmark, July 1-4, 1991. The objective of this series of workshops is to bring together researchers and practitioners interested in the development and use of methods, tools and theories for automatic verification of (finite) state systems. The workshop provides a unique opportunity for comparing the numerous verification methods and associated verification tools, and the extent to which they may be utilized in application design. The emphasis is not only on new research results but also on the application of existing results to real verification problems. The papers in the volume areorganized into sections on equivalence checking, model checking, applications, tools for process algebras, the state explosion problem, symbolic model checking, verification and transformation techniques, higher order logic, partial order approaches, hardware verification, timed specification and verification, and automata.
Author : Dino P. Oliva
Publisher :
ISBN 13 :
Total Pages : 61 pages
Book Rating : 4.:/5 (431 download)
Download or read book A Verified Compiler for Pure PreScheme written by Dino P. Oliva and published by . This book was released on 1992 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tobias Nipkow
Publisher : Springer
ISBN 13 : 3319105426
Total Pages : 304 pages
Book Rating : 4.3/5 (191 download)
Download or read book Concrete Semantics written by Tobias Nipkow and published by Springer. This book was released on 2014-12-03 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I of this book is a practical introduction to working with the Isabelle proof assistant. It teaches you how to write functional programs and inductive definitions and how to prove properties about them in Isabelle’s structured proof language. Part II is an introduction to the semantics of imperative languages with an emphasis on applications like compilers and program analysers. The distinguishing feature is that all the mathematics has been formalised in Isabelle and much of it is executable. Part I focusses on the details of proofs in Isabelle; Part II can be read even without familiarity with Isabelle’s proof language, all proofs are described in detail but informally. The book teaches the reader the art of precise logical reasoning and the practical use of a proof assistant as a surgical tool for formal proofs about computer science artefacts. In this sense it represents a formal approach to computer science, not just semantics. The Isabelle formalisation, including the proofs and accompanying slides, are freely available online, and the book is suitable for graduate students, advanced undergraduate students, and researchers in theoretical computer science and logic.
Author : Juan Ignacio Perna
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (655 download)
Download or read book A Verified Compiler for Handel-C written by Juan Ignacio Perna and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
