Multi-Processor Systems on Chip (MPSoCs) are gaining traction in the embedded systems market. Their use will allow consolidation of a variety of applications into a single computing platform. At the same time the probability of transient hardware malfunctions manifesting at the software level increases. These applications integrated into the MPSoC possess a range of different requirements in terms of timing, safety and resource demand. Hence, it is impossible to provide a one-size-fits-all solution that allows reliable execution in future MPSoC systems. In this paper, we present ASTEROID, a set of hardware and operating system mechanisms that aim to provide reliable execution in such a diverse environment.