摘要： 针对处理器中可用寄存器数量有限的问题，提出一种适用于多核处理器的扩展寄存器文件设计方案。采用多组结构进行硬件设计，将通信端口映射在扩展寄存器地址空间上，以实现寄存器寻址核间通信机制，引入兼具底层指令与高层封装的混合软件配置方案，改进软件编译流程。评估结果表明，该方案将可用寄存器文件的数量增加一倍，核间通信指令数目减少50%，系统吞吐率得到优化。

关键词: 扩展寄存器, 多组结构, 多核处理器, 核间通信, LDPC译码器

Abstract: Concerning the issue of limited number of register files in processor, this paper presents an extended register file design scheme for multi-core processors. A multi-bank architecture is employed for hardware design, and the communication ports are mapped in the address space of extended register file, which enables an inter-core communication method with register file direct addressing. A hybrid software configuring method is proposed with both bottom-layer instructions and top-layer packaged functions, and the compiling flow is improved. Estimation result shows this scheme can both double the number of available register files and reduce the number of instructions for inter-core communication by 50%. And the system throughput is optimized.

Key words: extended register, multi-bank architecture, multi-core processor, inter-core communication, LDPC decoder

中图分类号: 

• N945