path: root/lib/arch/arm64/README.md

# Procedure Call Standard ARM64

- Integer/pointer arguments via `x0`-`x7`
- Integer/pointer return values via `x0`
- Callee saved registers `x19`-`x28`, `sp`

## Reference
- [johannst arm64 notes](https://johannst.github.io/notes/arch/arm64.html)