Individual skill

assembly-x86

Use when reading GCC or Clang x86-64 assembly, writing inline asm, decoding AT&T syntax, or applying System V AMD64 register rules. Not for SIMD intrinsic selection: use simd-intrinsics.

.devin/skills/assembly-x86/SKILL.md

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Last checked: Nov 4, 2026

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Repository last updated: Sep 28, 2026
License: Apache-2.0

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# x86-64 assembly

GCC and Clang emit AT&T syntax by default. This skill reads that output, writes inline asm, and keeps register use inside the System V AMD64 ABI.

## Contract

| Field | Bound contract |
|---|---|
| Trigger | The task reads compiler assembly output, writes inline asm in C or C++, decides AT&T versus Intel syntax, or explains calling conventions and stack layout in a disassembly. |
| Authority | Read-only. The skill explains and drafts; edits land through the normal coding path. No remote mutation. |
| Side effect | None. |
| Done | The drafted assembly assembles with `gcc -c` or `clang -c`, or the compiler output under discussion is explained register by register. |

## Inputs