Abstract: During the process of hardware/software codesign of onboard computer, power estimation of processor is an essential problem. The existing methods involving power estimation of processor mainly aim at ARM and DSP processors without the ability of dealing with LEON3 processor. To cope with this problem, based on the functional lever power analysis, a method is proposed to extract parameters from C code. At the same time, the sequential minimal optimization algorithm of support vector regression is improved to enhance the model precision. In the experiment section, the predicting precision of the proposed method is verified by some common algorithms programmed in C language. The results show that the predicting error is less than 3%, and the precision can meet the requirement for hardware/software codesign of onboard computer.

Key words: hardware/software codesign, functional level power analysis, power estimation, power modeling