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+# SystemV AMD64 ABI
+
+- Integer/pointer arguments via `rdi`, `rsi`, `rdx`, `rcx`, `r8`, `r9`
+- Integer/pointer return values via `rax`
+- Callee saved registers `rbx`, `rbp`, `r12` – `r15`
+
+## Reference
+- [johannst x86_64 notes](https://johannst.github.io/notes/arch/x86_64.html)
+