Multi-core RISV-CPU simulator based on Rust

Abstract

The invention discloses a multi-core RISCV (Reduced International Standard Control Virtualization) simulator based on Rust. The simulator comprises a plurality of Risc-V processing core modules, a bus module, a DRAM module, a CLINT module, a PLIC module and a UART module, wherein the Risc-V processing core modules are constructed based on a Risc-V open source instruction set and used for achieving instruction fetching, decoding and execution functions. The DRAM module is used for simulating a memory; the PLIC module is used for simulating a hard disk; the UART module is used for simulating external interruption or local interruption; and the bus module is used for controlling information interaction among the Risc-V processing core module, the bus module, the DRAM module, the CLINT module, the PLIC module and the UART module so as to realize conflict-free communication. According to the simulator provided by the invention, the characteristics of security, memory layout control and concurrency are emphasized by using the Rust language, the memory security during the simulator operation is improved, and the robustness is strong.

Description

technical field [0001] The present invention relates to the field of computer technology, more specifically, to a Rust-based multi-core RISCV-CPU simulator. Background technique [0002] RISC-V is an open instruction set architecture based on the principle of reduced instruction set computing. RISC-V has a simple structure, with only more than 40 basic instruction sets, and a total of dozens of instructions plus other modular expansion instructions. Because RISC-V has the advantages of complete open source, simple architecture, and easy portability, it has been widely used recently. [0003] The Rust language is a system programming language that focuses on safety, and its main features are fast running speed and memory safety. Rust guarantees memory and thread safety through an ownership model and type system, enabling it to eliminate memory-related errors at compile time, and has performance close to that of C or C++, so Rust has a growing user base. [0004] Simulator i...

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Problems solved by technology

[0005] After analysis, the existing mature simulator has a large amount of code and complex structure, which is not conducive to the expansion of modules in the simulator

Moreover, there is currently no mature simulator implemented in a memory-safe language, which may cause system downtime and abnormal operation due to problems such as memory access exceptions and memory overflow when the simulator is running. However, the existing smaller-scale The simulator lacks a multi-core operating mechanism

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