%0 Journal Article
%T A formalisation of XMAS
%A Bernard van Gastel
%A Julien Schmaltz
%J Electronic Proceedings in Theoretical Computer Science
%D 2013
%I Open Publishing Association
%R 10.4204/eptcs.114.9
%X Communication fabrics play a key role in the correctness and performance of modern multi-core processors and systems-on-chip. To enable formal verification, a recent trend is to use high-level micro-architectural models to capture designers' intent about the communication and processing of messages. Intel proposed the xMAS language to support the formal definition of executable specifications of micro-architectures. We formalise the semantics of xMAS in ACL2. Our formalisation represents the computation of the values of all wires of a design. Our main function computes a set of possible routing targets for each message and whether a message can make progress according to the current network state. We prove several properties on the semantics, including termination, non-emptiness of routing, and correctness of progress conditions. Our current effort focuses on a basic subset of the entire xMAS language, which includes queues, functions, and switches.
%U http://arxiv.org/pdf/1304.7862v1