--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/adadecode.h	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,56 @@
+/****************************************************************************
+ *                                                                          *
+ *                         GNAT COMPILER COMPONENTS                         *
+ *                                                                          *
+ *                            A D A D E C O D E                             *
+ *                                                                          *
+ *                              C Header File                               *
+ *                                                                          *
+ *           Copyright (C) 2001-2015, Free Software Foundation, Inc.        *
+ *                                                                          *
+ * GNAT is free software;  you can  redistribute it  and/or modify it under *
+ * terms of the  GNU General Public License as published  by the Free Soft- *
+ * ware  Foundation;  either version 3,  or (at your option) any later ver- *
+ * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
+ * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
+ * or FITNESS FOR A PARTICULAR PURPOSE.                                     *
+ *                                                                          *
+ * As a special exception under Section 7 of GPL version 3, you are granted *
+ * additional permissions described in the GCC Runtime Library Exception,   *
+ * version 3.1, as published by the Free Software Foundation.               *
+ *                                                                          *
+ * You should have received a copy of the GNU General Public License and    *
+ * a copy of the GCC Runtime Library Exception along with this program;     *
+ * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    *
+ * <http://www.gnu.org/licenses/>.                                          *
+ *                                                                          *
+ * GNAT was originally developed  by the GNAT team at  New York University. *
+ * Extensive contributions were provided by Ada Core Technologies Inc.      *
+ *                                                                          *
+ ****************************************************************************/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* This function will return the Ada name from the encoded form.
+   The Ada coding is done in exp_dbug.ads and this is the inverse function.
+   see exp_dbug.ads for full encoding rules, a short description is added
+   below. Objects and routines are fully handled; types are stripped of their
+   encodings.
+
+   CODED_NAME is the encoded entity name.
+   ADA_NAME is a pointer to a buffer, it will receive the Ada name. A safe
+   size for this buffer is: strlen (coded_name) * 2 + 60. (60 is for the
+   verbose information).
+   VERBOSE is nonzero if more information about the entity is to be
+   added at the end of the Ada name and surrounded by ( and ).  */
+extern void __gnat_decode (const char *, char *, int);
+
+/* This function will return the GNAT encodings, in a colon-separated list,
+   from the encoded form. The Ada encodings are described in exp_dbug.ads.  */
+extern void get_encoding (const char *, char *);
+
+#ifdef __cplusplus
+}
+#endif