cid 285944314ed2862856f726f416871358242863a40e7028a10cba921f13e56851 · original · open access · via openalex
Title: Dynamic Analysis of ARINC 653 RTOS with LLVM Authors: Vitaly Cheptsov; Alexey Khoroshilov Venue: Ivannikov ISPRAS Open Conference (ISPRAS) Year: 2018 Canonical: doi:10.1109/ispras.2018.00009 URL: https://doi.org/10.1109/ispras.2018.00009 Collector: openalex OA: true ABSTRACT Existing standards for airborne-embedded software systems impose a number of requirements applicable to the software development cycle of hard real-time operating systems found in modern aircraft. The measures taken are meant to reduce the risks of undesired consequences, but have strongly varying costs. Dynamic instrumentation and static analysis are common practices used to automatically find software defects, from strictly non-conforming code constructions to memory corruptions or invalid control flow. LLVM analyser and sanitizer infrastructure, while regularly applied to general-purpose software, originally was not thought to be introduced to heavily restricted environments. In this paper we discuss the specifics of airborne systems with regards to dynamic instrumentation and provide practical considerations to be taken into account for the effective use of general-purpose instrumentation tools. We bring a complete LLVM stack support to JetOS, a prospective onboard real-time operating system currently being developed at ISP RAS in collaboration with GosNIIAS. As an example, we port AddressSanitizer, MemorySanitizer, and UndefinedBehaviorSanitizer and provide the details against the caveats on all relevant sides: a sanitizer, a compiler, and an operating system. In addition we suggest uninvolved optimisations and enhancements to the runtimes to maximise the effects of the tools.