cirosantilli/linux-kernel-module-cheat
Linux Kernel Module Cheat
Ce projet fournit un environnement de développement du noyau Linux et une suite d'émulation système pour construire et déboguer des modules noyau et de l'assembleur bare-metal à travers de multiples architectures matérielles. Il fonctionne comme un bac à sable complet et un framework pour le développement système bas niveau, utilisant QEMU pour simuler des environnements matériels sans avoir besoin de périphériques physiques.
L'environnement intègre des chaînes de compilation croisée utilisant Buildroot et crosstool-NG pour cibler les plateformes x86_64, ARMv7 et ARMv8 depuis un seul hôte. Il dispose d'un framework de débogage noyau spécialisé qui exploite GDB et KGDB pour l'exécution pas à pas et l'inspection d'état des processus noyau et utilisateur.
Ses larges capacités incluent des tests de régression automatisés pour isoler les échecs de démarrage et fonctionnels via la bissection de contrôle de version, l'abstraction matérielle pour gérer les états d'alimentation du CPU et les registres système, et des primitives de test bas niveau pour l'intégrité de l'état mémoire et l'analyse d'assembleur. Le système inclut également des utilitaires pour le benchmarking de performance des commandes, la journalisation de sortie et l'amorçage d'espaces de travail conteneurisés.
Features
- Kernel Build Systems - Provides a comprehensive build infrastructure specifically for compiling and testing Linux kernel modules across multiple architectures.
- System Emulators - Provides a full system emulation suite using QEMU and gem5 to execute kernel modules and baremetal assembly.
- Cross-Compilation Toolchains - Uses Buildroot and crosstool-NG to generate architecture-specific compilers and root filesystems for multiple target platforms.
- Toolchain Generators - Integrates crosstool-NG to generate architecture-specific compilers and linkers for ARM and x86_64 platforms.
- Cross-Platform Toolchains - Configures Buildroot and crosstool-NG to manage the full build-to-debug lifecycle across diverse hardware architectures.
- Kernel Debugging with GDB and QEMU - Connects GDB to a QEMU-emulated environment to perform step-by-step execution and state inspection of the target kernel.
- Crosstool-NG Integrations - Uses crosstool-NG to build architecture-specific compilers and linkers for ARM and x86_64 platforms.
- Assembly Sandboxes - Provides an isolated environment for developing and testing processor-specific assembly code and low-level memory operations.
- Low-Level Module Development - Builds and tests low-level modules and assembly using specialized toolchains within an emulation environment.
- Kernel Component Debugging - Provides a collection of GDB and KGDB configurations for step-debugging kernel modules and system behavior.
- Kernel Development Environments - Provides a pre-configured emulation setup for building and debugging Linux kernel modules across multiple hardware architectures.
- Cross-Architecture Module Development - Enables building and testing low-level kernel modules across multiple hardware architectures using an emulation environment.
- Kernel Emulation Environments - Provides a pre-configured virtual environment to develop and test low-level modules and baremetal assembly.
- x64 Assembly Analysis - Executes and debugs low-level assembly code within a controlled emulator to study processor behavior.
- Buildroot-Based Distributions - Integrates Buildroot to generate custom root filesystems and cross-compilers tailored for specific hardware architectures.
- Baremetal Emulator Development - Enables the development and debugging of low-level assembly for x86_64 and ARM architectures within a controlled emulator.
- Build Constraints - Defines compilation flags and architecture restrictions to ensure code builds correctly for specific target environments.
- Commit History Bisecting Tools - Implements automated binary search across commit history to identify the specific change that introduced a functional error.
- Memory Integrity Testing - Provides utilities to verify data integrity and system state using raw memory comparisons during execution.
- Multi-Architecture Emulators - Executes and tests code across diverse hardware targets including x86_64, ARMv7, and ARMv8 using emulation.
- Operating System Emulation - Launches pre-built emulators with verbose logging to analyze system behavior and kernel output.
- User Space Tooling - Configures the set of command-line utilities and shells compiled into the emulation environment to support development.
- Emulation Suites - Offers a virtualization environment used to run and analyze kernel-level code and baremetal assembly without physical hardware.
- Boot Failure Bisections - Executes boot sequences in an emulator and analyzes version history to identify the commit causing boot failures.
- Regression Isolation - Provides automated binary search through version control history to isolate commits that introduce functional or boot failures.
- Linux Kernel Development - Cheat sheet for Linux kernel module development.
