// hide it from escape analysis). Mark as non-hidden here.
			// so that it will participated in escape analysis.
			r.Func.SetIsHiddenClosure(false)
			// Closures with no captured variables are globals,
			// so the assignment can be done at link time.
			// TODO if roff != 0 { panic }
			staticdata.InitAddr(l, loff, staticdata.FuncLinksym(r.Func.Nname))
			return true
		}
		ir.ClosureDebugRuntimeCheck(r)

	} else {
		err = funcOutput(profile, *output)
	}

	if err != nil {
		fmt.Fprintf(os.Stderr, "cover: %v\n", err)
		os.Exit(2)
	}
}

// parseFlags sets the profile and counterStmt globals and performs validations.
func parseFlags() error {
	profile = *htmlOut
	if *funcOut != "" {
		if profile != "" {
			return fmt.Errorf("too many options")
		}
		profile = *funcOut
	}

	{name: "SP", zeroWidth: true},                                       // stack pointer
	{name: "SB", typ: "Uintptr", zeroWidth: true},                       // static base pointer (a.k.a. globals pointer)
	{name: "Invalid"},                                                   // unused value

		return true
	}
	return false
}

func errorCheck(ctxt *obj.Link, s *obj.LSym) {
	// When dynamic linking, R15 is used to access globals. Reject code that
	// uses R15 after a global variable access.
	if !ctxt.Flag_dynlink {
		return
	}

	// Flood fill all the instructions where R15's value is junk.

</li>

</ul>

<p>
All user-defined symbols are written as offsets to the pseudo-registers
<code>FP</code> (arguments and locals) and <code>SB</code> (globals).
</p>

<p>
The <code>SB</code> pseudo-register can be thought of as the origin of memory, so the symbol <code>foo(SB)</code>
is the name <code>foo</code> as an address in memory.