Sohu Tech Products

Jan 31, 2024 · Fundamentals

Understanding Mach-O: Structure, Definitions, and Practical Applications

Mach‑O is the macOS and iOS binary format whose header, load commands, and __TEXT/__DATA sections define executable, library, and symbol information, enabling developers to understand loading, linking, and startup performance, and to implement custom initialization hooks or modular launch tasks via custom data sections.