Enabling Syscall Intercept for RISC-V

TL;DR

This paper discusses the adaptation of a syscall interception library to the RISC-V architecture, supporting the development of a functional RISC-V ecosystem within the European Union's technological sovereignty initiatives.

Contribution

It presents the process and challenges of porting a syscall interception library to RISC-V, advancing the software stack for RISC-V processors.

Findings

Successfully ported syscall interception library to RISC-V

Identified and overcame architecture-specific limitations

Contributed to RISC-V ecosystem development

Abstract

The European Union technological sovereignty strategy centers around the RISC-V Instruction Set Architecture, with the European Processor Initiative leading efforts to build production-ready processors. Focusing on realizing a functional RISC-V ecosystem, the BZL initiative (www.bzl.es) is making an effort to create a software stack along with the hardware. In this work, we detail the efforts made in porting a widely used syscall interception library, mainly used on AdHocFS (i.e., DAOS, GekkoFS), to RISC-V and how we overcame some of the limitations encountered.