instructions[s] = obj.As(i)
	}
	for i, s := range ppc64.Anames {
		if obj.As(i) >= obj.A_ARCHSPECIFIC {
			instructions[s] = obj.As(i) + obj.ABasePPC64
		}
	}
	// The opcodes generated by x/arch's ppc64map are listed in
	// a separate slice, add them too.
	for i, s := range ppc64.GenAnames {
		instructions[s] = obj.As(i) + ppc64.AFIRSTGEN
	}
	// Annoying aliases.
	instructions["BR"] = ppc64.ABR

	"complexfloat":  "float _Complex",
	"complexdouble": "double _Complex",
}

var incomplete = "_cgopackage.Incomplete"

// cname returns the C name to use for C.s.
// The expansions are listed in nameToC and also
// struct_foo becomes "struct foo", and similarly for
// union and enum.
func cname(s string) string {
	if t, ok := nameToC[s]; ok {
		return t
	}

	if strings.HasPrefix(s, "struct_") {

	}

	li := imports.(listImports)
	w.stdPackages = li.stdPackages
	w.importDir = li.importDir
	w.importMap = li.importMap
}

// listEnv returns the process environment to use when invoking 'go list' for
// the given context.
func listEnv(c *build.Context) []string {
	if c == nil {
		return os.Environ()
	}

	environ := append(os.Environ(),
		"GOOS="+c.GOOS,
		"GOARCH="+c.GOARCH)

	appID = getenv("GOIOS_APP_ID")

	// e.g. Z8B3JBXXXX, available at
	// https://developer.apple.com/membercenter/index.action#accountSummary as Team ID.
	teamID = getenv("GOIOS_TEAM_ID")

	// Device IDs as listed with ios-deploy -c.
	deviceID = os.Getenv("GOIOS_DEVICE_ID")

	if _, id, ok := strings.Cut(appID, "."); ok {
		bundleID = id
	}

	if err := signApp(appdir); err != nil {
		return err
	}