NDLI: Denotational semantics and its algebraic derivation for an event-driven system-level language

Content Provider	Springer Nature Link
Author	Zhu, H. He, Jifeng Qin, Shengchao Brooke, Phillip J.
Copyright Year	2014
Abstract	As a system-level modelling language, SystemC possesses several novel features such as delayed notifications, notification cancelling, notification overriding and delta-cycle. It also has real-time and shared-variable features. Previously we have studied an operational semantics for SystemC Peng et al. (An operational semantics of an event-driven system-level simulator, pp 190–200, 2006) and bisimulation has been introduced based on some aspects of reasonable abstractions. The denotational method is another approach to studying the semantics of a programming language. It provides the mathematical meaning to programs and can predict the behaviour of programs. Due to the novel features of SystemC, it is challenging to study the denotational semantics for SystemC. In this paper, we apply Unifying Theories of Programming (abbreviated as UTP) Hoare and He (Unifying theories of programming, 1998) in exploring the denotational semantics. Two trace variables are introduced, one to record the state behaviours and another to record the event behaviours. The timed model is formalized in a threedimensional structure. A set of algebraic laws is explored, which can be proved via the presented denotational semantics. In this paper, we also consider the linking between denotational semantics and algebraic semantics. The linking is obtained by deriving the denotational semantics from algebraic semantics for SystemC. A complete set of parallel expansion laws is explored, where the location status of an instantaneous action is studied. The location status indicates an instantaneous action is due to which exact parallel component. We introduce the concept of head normal form for each program and every program is expressed in the form of guarded choice with location status. Based on this, the derivation strategy for deriving denotational semantics from algebraic semantics is provided.
Starting Page	133
Ending Page	166
Page Count	34
File Format	PDF
ISSN	09345043
Journal	Formal Aspects of Computing
Volume Number	27
Issue Number	1
e-ISSN	1433299X
Language	English
Publisher	Springer London
Publisher Date	2014-08-13
Publisher Place	London
Access Restriction	Subscribed
Subject Keyword	Denotational semantics Algebraic semantics Semantic linking Head normal form SystemC Math Applications in Computer Science Theory of Computation Computational Mathematics and Numerical Analysis
Content Type	Text
Resource Type	Article
Subject	Theoretical Computer Science Software

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