静态超标量MCU-DSP内核的Load先行访存调度  

Load bypassing memory access scheduling for static superscalar MCU-DSP core

作　　者：刘博[1] 张盛兵[1] 黄嵩人[2] 

机构地区：[1]西北工业大学计算机学院,西安710072 [2]中国电子科技集团公司第五十八研究所,江苏无锡214035

出　　处：《计算机应用研究》2013年第2期450-453,共4页Application Research of Computers

基　　金："核高基"重大专项基金资助项目(2009ZX01034-001-002-003)

摘　　要：针对嵌入式控制与数字信号处理混合应用领域,建立了一种基于MCU-DSP融合架构处理器的Load先行机制。该内核使用静态超标量技术,拥有整数、存取、循环三条流水线,并采用特殊的四级流水。在存取流水线中,Load先行机制通过动态调度指令的访存顺序,实现了Load指令对Store指令的先行,提前了整数流水线中运算操作数的准备,加快了流水线的处理速度。For embedded controlling and digital signal processing mixed application field, this paper proposed a novel Load bypassing mechanism based on MCU-DSP hybrid architecture processor. The MCU-DSP core used static superscalar micro-ar- chitecture and includes integer, load-store and loop three 4-stage pipelines. By dynamically scheduling the memory accessing sequence of instructions in load-store pipeline, the Load bypassing mechanism implements the execution of Load instruction aheead of Store instruction, which eventually advances the preparation, of the computing operands in integer pipeline and speeds up the entire pipelines.

关 键 词：微控制器(MCU) 数字信号处理器(DSP) Load先行 静态超标量 动态调度 

分 类 号：TP332[自动化与计算机技术—计算机系统结构]