1 files changed, 33 insertions, 0 deletions
diff --git a/src/cmd/internal/objabi/util.go b/src/cmd/internal/objabi/util.go
new file mode 100644
index 0000000..a3e1242
--- /dev/null
+++ b/src/cmd/internal/objabi/util.go
@@ -0,0 +1,33 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package objabi
+
+import (
+	"fmt"
+	"strings"
+
+	"internal/buildcfg"
+)
+
+const (
+	ElfRelocOffset   = 256
+	MachoRelocOffset = 2048    // reserve enough space for ELF relocations
+	GlobalDictPrefix = ".dict" // prefix for names of global dictionaries
+)
+
+// HeaderString returns the toolchain configuration string written in
+// Go object headers. This string ensures we don't attempt to import
+// or link object files that are incompatible with each other. This
+// string always starts with "go object ".
+func HeaderString() string {
+	archExtra := ""
+	if k, v := buildcfg.GOGOARCH(); k != "" && v != "" {
+		archExtra = " " + k + "=" + v
+	}
+	return fmt.Sprintf("go object %s %s %s%s X:%s\n",
+		buildcfg.GOOS, buildcfg.GOARCH,
+		buildcfg.Version, archExtra,
+		strings.Join(buildcfg.Experiment.Enabled(), ","))
+}