單晶片Java執行環境啟動電路設計

Abstract

本論文新增了一個簡單的啟動電路，讓Java處理器做到快速啟動Java Runtime Environment；並使用Java實作了ClassLoader，使得Java處理器啟動後可以獨立載入應用程式並執行，且class loading的速度優於原來RISC-core所實作的classloader；最後在Hardware Native Interface上新增了JAIPPointer電路，透過修改Java API class與使用JAIPointer實作的Java software driver可以很簡單的與外部的I/O裝置做溝通。通過以上的方法，讓Java處理器不需要RISC-core便可以獨立執行Java應用程式。

In this thesis, we present a self-booting JRE on a full-system hardwired Java processor, JAIP. With a new implemented simple boot logic, the JAIP JRE itself now can boot up intanstly. And to support dynamic class loading during runtime, we implement a class loader written in Java which is responsible for loading other Java applications. We also add a circuit "JAIPPointer" and its Java APIs to provide a memory-mapped interface, so user can easily integrate other I/O devices by adding their own Java software driver.