abi-and-calling-conventions SKILL.md skillA
abi-and-calling-conventions from outlinedriven/outline-driven-development is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add outlinedriven/outline-driven-development/abi-and-calling-conventions@git:20260905.e0ca87ePins git:20260905.e0ca87e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- outlinedriven/outline-driven-development
- Path
.devin/skills/abi-and-calling-conventions/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260905.e0ca87e, committed Sep 5, 2026
- First version recorded
- Sep 5, 2026
- Size
- 5,091 bytes
- Repository stars
- 53
- License
- Apache-2.0
Use when explaining System V AMD64, ARM AAPCS, RISC-V psABI, stack frames, variadic calls, or FFI register rules. Not for the Rust FFI binding layer: use rust-ffi.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# ABI and calling conventions ## Contract | Field | Bound contract | |---|---| | Trigger | A question or debugging session needs the register roles, stack alignment, argument passing, return value, or variadic rules of System V AMD64, ARM AAPCS, or the RISC-V psABI. | | Authority | Read-only. The skill reads source, disassembly, and compiler output and answers in chat. Nothing on disk changes, so there is nothing to roll back. No remote mutation. | | Side effect | Chat output only. Compiler and disassembler runs write nothing outside stdout. | | Done | The answer names the argument registers, return registers, stack alignment, callee-saved set, and variadic rule for the named ABI, and points to the compiler output that confirms it. | ## Inputs - Target ABI (required): System V AMD64, AAPCS64 (AArch64), or RISC-V psABI (RV64). If the user names Windows x64, see the failure table. - Calling context (required): an assembly thunk, inline asm clobber list, a mixed C and assembly boundary, a variadic wrapper, or an FFI signature. - Symptom (optional): a crash on `call`, a wrong argument value, or a corrupted register after a call. ## Procedure …
Read the whole file at its exact version.
How to install
mdr add outlinedriven/outline-driven-development/abi-and-calling-conventions@sha256:4fa34613be6a01c4The line at the top of this page pins the label git:20260905.e0ca87e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_h7esqn3g6xtur5w4)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, all committed on Sep 5, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260905.e0ca87e latest | 2026-09-05 | e0ca87e | 5,091 B | A | view · diff |
| git:20260905.75402fa | 2026-09-05 | 75402fa | 4,831 B | A | view · diff |
| git:20260905.aeb0f9e | 2026-09-05 | aeb0f9e | 4,841 B | A | view · diff |
| git:20260905.fd53e99 | 2026-09-05 | fd53e99 | 4,794 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5091 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
outlinedriven/outline-driven-development · 53 stars · license Apache-2.0 · pushed 2026-09-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_h7esqn3g6xtur5w4 GET https://markdownregistry.com/api/v1/resolve?ref=outlinedriven/outline-driven-development/abi-and-calling-conventions GET https://markdownregistry.com/api/v1/blob/4fa34613be6a01c4c81e9096033a310e9f053e5e3bc8d528157363fb77a8a617
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.