log.Printf("too many periods in symbol specification")
		usage()
	}
	symbol = elem[0]
	return
}

// isExported reports whether the name is an exported identifier.
// If the unexported flag (-u) is true, isExported returns true because
// it means that we treat the name as if it is exported.
func isExported(name string) bool {
	return unexported || token.IsExported(name)
}

	flag.Var(&flagExtldflags, "extldflags", "pass `flags` to external linker")
	flag.Var(&flagW, "w", "disable DWARF generation")
}

// Flags used by the linker. The exported flags are used by the architecture-specific packages.
var (
	flagBuildid = flag.String("buildid", "", "record `id` as Go toolchain build id")

	fpregmask          regMask
	fp32regmask        regMask
	fp64regmask        regMask
	specialregmask     regMask
	framepointerreg    int8
	linkreg            int8
	generic            bool
	imports            []string
}

type opData struct {
	name              string
	reg               regInfo
	asm               string
	typ               string // default result type
	aux               string

// targets implement this protocol. We plan to publish that package
// in a non-internal location after finalizing its API.
//
// Bisect starts by running the target with no changes enabled and then
// with all changes enabled. It expects the former to succeed and the latter to fail,
// and then it will search for the minimal set of changes that must be enabled
// to provoke the failure. If the situation is reversed – the target fails with no

		}
	}()
	cmd := `export TMPDIR="` + deviceGotmp + `"` +
		`; export GOROOT="` + deviceGoroot + `"` +
		`; export GOPATH="` + deviceGopath + `"` +
		`; export CGO_ENABLED=0` +
		`; export GOPROXY=` + os.Getenv("GOPROXY") +
		`; export GOCACHE="` + deviceRoot + `/gocache"` +
		`; export PATH="` + deviceGoroot + `/bin":$PATH` +
		`; export HOME="` + deviceRoot + `/home"` +
		`; cd "` + deviceCwd + `"` +