Developer Builds Linux Kernel Module Using Pure x86-64 Assembly, No C Required

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A developer created a Linux kernel module written entirely in x86-64 assembly language, bypassing the C-based toolchain that kernel development traditionally relies on. The project used the GNU Assembler (GAS) and the kernel's own kbuild system, requiring no external toolchain. The goal was to load a working module into a modern Fedora 44 kernel that would print messages on load and unload. The assembly code itself was compact, but meeting the kernel's strict binary-level contracts proved complex, with multiple failed iterations revealing hidden rules of kernel module development. The experiment was documented as a learning exercise, tracing each failure back to specific kernel mechanisms and requirements.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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