Generally the inline assembly is hand-written and must follow the platform rules, see "Architecture-specific details" in https://go.dev/doc/asm https://go.dev/d

Generally the inline assembly is hand-written and must follow the platform rules, see "Architecture-specific details" in https://go.dev/doc/asm https://go.dev/doc/asm The few tools that generate that asm, such as https://github.com/mmcloughlin/avo https://github.com/mmcloughlin/avo , would also have follow the rules. You're not meant to take C source, crank it through GCC, and slurp that in as inline asm in Go. Background: https://www.youtube.com/watch?v=KINIAgRpkDA https://www.youtube.com/watch?v=KINIAgRpkDA