Santiago Arranz Olmos, Martín Fernández, Matías Steinberg, Alejandro Gadea, Emmanuel Gunther, Miguel Pagano
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The LEGv8 architecture is a restricted representation of the ARMv8 architecture. In this paper, we present a formalisation of the LEGv8 architecture in Agda. We have modelled machine words, the processor state, and the semantics of the instruction set; we also include an assembler and disassembler with round-trip correctness. We explain how dependent types allow us to abstract away some repetitive definitions and drive the correctness proof of the assembler.
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