OOEM: object-oriented energy model for embedded software reuse

Energy consumption of embedded software must be estimated in a higher level of abstraction than instruction level. This paper proposes an object-oriented energy model for energy estimation of ESW IP (Embedded Software Intelligent Property). Energy cost of ESW IP is characterized by its static and dynamic energy consumption. The model provides interfaces to the energy models of underlying hardware components. The model also facilitates ESW IP reuse and IP-based design, since energy characteristic of ESW IP is reasonably modeled. An energy estimation method for ESW IP and corresponding estimation environment based on the model is introduced. Virtual instruction (VI) is one key factor o the model. Two VI design strategies and energy estimation methods are proposed and studied.