一款安全RISC-V处理器特权模式和内存保护测试  

Tests of privileged modes and memory protection for a secure RISC-V processor

作　　者：焦芃源 李涵[1] 李翔宇[2] 殷树娟[1] JIAO Pengyuan;LI Han;LI Xiangyu;YIN Shujuan(School of Applied Science,Beijing Information Science&Technology University,Beijing 100192,China;Institute of Microelectronics,Tsinghua University,Beijing 100084,China)

机构地区：[1]北京信息科技大学理学院,北京100192 [2]清华大学微电子学研究所,北京100084

出　　处：《北京信息科技大学学报（自然科学版）》2021年第3期82-87,共6页Journal of Beijing Information Science and Technology University

基　　金：广东省重点领域研发计划专项(2019B010117002)。

摘　　要：针对安全处理器中特权模式和物理内存保护这两大特性,以一款32位RISC-V安全处理器为研究对象,利用C语言和汇编语言程序构造了各种模式切换和越权访问的场景,提出了一套RISC-V特权模式和物理内存保护功能的测试方案,通过异常处理程序对处理器状态、异常信息进行观测,结果表明了该方案检验处理器安全特性的有效性。For the characteristics of privileged modes and physical memory protection in a secure processor,a 32-bit RISC-V security processor was studied,and various scenarios of modes switching and unauthorized access were constructed by using C language and assembly language programs.A test scheme of RISC-V privileged modes and physical memory protection function was proposed,and the processor states and exception information were observed by exception handlers.The results show that the scheme can test the validity of processor security features.

关 键 词：处理器安全 RISC-V 特权模式 物理内存保护 

分 类 号：TN407[电子电信—微电子学与固体电子学]