References: runtime.syscall

func runtime.syscall_syscallX

one use

	runtime (current package)
		sys_darwin.go#L29: func syscall_syscallX(fn, a1, a2, a3 uintptr) (r1, r2, err uintptr) {

The pages are generated with Golds v0.2.8-preview. (GOOS=darwin GOARCH=arm64)