--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/argv-lynxos178-raven-cert.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,77 @@
+/****************************************************************************
+ *                                                                          *
+ *                         GNAT COMPILER COMPONENTS                         *
+ *                                                                          *
+ *                                A R G V                                   *
+ *                                                                          *
+ *                          C Implementation File                           *
+ *                                                                          *
+ *         Copyright (C) 1992-2018, 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.      *
+ *                                                                          *
+ ****************************************************************************/
+
+/* Routines for accessing command line arguments from both the runtime
+   library and from the compiler itself.  In the former case, gnat_argc
+   and gnat_argv are the original argc and argv values as stored by the
+   binder generated main program, and these routines are accessed from
+   the Ada.Command_Line package.  In the compiler case, gnat_argc and
+   gnat_argv are the values as modified by toplev, and these routines
+   are accessed from the Osint package.  */
+
+/* This version is for the ravenscar-cert runtime in LynxOS-178, with
+   minimal support for Ada.Command_Line.Command_Name */
+
+#include <sys/types.h>
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* argc and argv of the main program are saved under gnat_argc and gnat_argv,
+   envp of the main program is saved under gnat_envp.
+   While gnat_argc and gnat_envp are not needed, they are referenced from
+   the binder-generated file so they need to be defined here */
+
+int gnat_argc = 0;
+const char **gnat_argv = (const char **) 0;
+const char **gnat_envp = (const char **) 0;
+
+int
+__gnat_len_arg (int arg_num)
+{
+  if (gnat_argv != NULL)
+    return strlen (gnat_argv[arg_num]);
+  else
+    return 0;
+}
+
+void
+__gnat_fill_arg (char *a, int i)
+{
+  if (gnat_argv != NULL)
+    strncpy (a, gnat_argv[i], strlen(gnat_argv[i]));
+}
+
+#ifdef __cplusplus
+}
+#endif