Remote instruction call: An RPC approach on instructions for embedded multi-core systems

Remote Procedure Calls (RPCs) are a well-known approach on the software layer, but not on the hardware layer. In this paper, we present, to the best of our knowledge, the first Remote Instruction Call (RIC) approach, which supports the execution of an instruction in another Central Processing Unit (CPU). This leads to an instruction execution in a different address room. RIC can perform some operations that are otherwise only possible with a memory access into another CPU's address room. With RIC no synchronization is required, what may avoid performance penalties as in common approaches. In this work, we present the idea of RIC, an implementation into the mosartMCU project, and the performance evaluation, which is implemented in a Field Programmable Gate Array (FPGA). We discuss some potential improvements and extensions, which may make this work the base for future works.