DisFR - SuperH Disassembler Technical Overview
Published on August 28, 2025
This article provides a technical overview of DisFR, a professional, lightweight SuperH architecture disassembler written in C++20.
Introduction
DisFR is a modern disassembler specifically designed for the Fujitsu FR instruction set, part of the SuperH microprocessor family used in various embedded systems.
The tool is built with a focus on:
- Clean, modular C++20 codebase
- Support for Fujitsu FR instruction set
- Cross-platform compatibility
- Extensibility for future architectures
Build System and Requirements
DisFR uses a simple Makefile-based build system with the following requirements:
- C++20 compatible compiler (g++ 10 or newer)
- GNU Make
- Linux or macOS environment
Build Process:
After successful compilation, the DisFR executable will be available in your system path.
Usage
Basic usage syntax:
Available options:
--FR # Process as Fujitsu FR architecture
Architecture
DisFR features a modular architecture with:
- Core Disassembly Engine - Handles instruction decoding
- Static Library Support - Reusable components
- Output Formatters - Generate readable assembly output
License
DisFR is licensed under the GNU AGPLv3 license, which ensures that improvements to the codebase remain open source.
Conclusion
DisFR provides a modern, efficient solution for disassembling Fujitsu FR architecture binaries. Its modular design and clean codebase make it an excellent tool for reverse engineers and embedded systems developers.
Key Advantages:
- Fujitsu FR architecture support
- Clean, modern C++20 implementation
- Modular and extensible design
- Cross-platform compatibility
- Open source with AGPLv3 license
Author:
GokbakarE
Date: August 28, 2025
https://github.com/GokbakarE/DisFR