Automated Regression Testing of a GCC Toolchain used on Embedded CPU Programs

Because of increased external disturbances, embedded systems are prone to, amongst others, control flow errors. In order to increase their reliability, multiple software-implemented countermeasures have been proposed. To ease their implementation, we have developed a GCC plugin which can automatically implement a variety of existing counter-measures. This plugin is being developed incrementally, continuously adding support for new techniques. However, when developing software incrementally, there is a need for regression testing. This assures previously supported case studies are still operating as expected. This paper presents our approach to automated regression testing for our GCC toolchain.