Raven: A Novel Kernel Debugging Tool on RISC-V

Lu，Hongyi1; Zhang，Fengwei2

10.1145/3489517.3530583

2022-07-10

0738-100X

Proceedings - Design Automation Conference

1039-1044

Debugging is an essential part of kernel development. However, debugging features are not available on RISC-V without the use of external hardware. In this paper, we leverage a security feature called Physical Memory Protection (PMP) as a debugging primitive to address this issue. Based on this debugging primitive, we design Raven, a novel kernel debugging tool with the standard functionalities (breakpoints, watchpoints, stepping, introspection). A prototype of Raven is implemented on a SiFive Unmatched development board. Our experiments show that Raven imposes a moderate but acceptable overhead to the kernel. Moreover, a real-world debugging scenario is set up to test its effectiveness.

debugger kernel debugging RISC-V

First ; Corresponding

English

EI

20223712717944

Computer Programming:723.1

2-s2.0-85137497972

Scopus

1.Research Institute of Trustworthy Autonomous Systems,Department of Computer Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,China
2.Department of Computer Science and Engineering,Research Institute of Trustworthy Autonomous Systems,Southern University of Science and Technology,Shenzhen,Guangdong,China

Lu，Hongyi,Zhang，Fengwei. Raven: A Novel Kernel Debugging Tool on RISC-V[C],2022:1039-1044.