A Minimalist ELF: Stripping Complexity to the Core
2024-12-26
This article details the author's journey in simplifying a basic Linux program, culminating in a minimalist ELF file. Starting with a simple "Hello World" program, the author progressively removes complexities like standard libraries, modern security features, debugging information, and error handling. The process delves into ELF file structure, symbol tables, sections, and the role of linker scripts, using assembly language to directly manipulate system calls for program functionality. The author concludes by creating a custom linker script, loading code and data segments into specified memory addresses, demonstrating the flexibility and low-level details of ELF file construction.
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(4zm.org)