1 files changed, 68 insertions, 0 deletions
diff --git a/libgfortran/runtime/pause.c b/libgfortran/runtime/pause.c
new file mode 100644
index 000000000..61ab4db03
--- /dev/null
+++ b/libgfortran/runtime/pause.c
@@ -0,0 +1,68 @@
+/* Implementation of the STOP statement.
+   Copyright 2002, 2005, 2007, 2009, 2010 Free Software Foundation, Inc.
+   Contributed by Paul Brook <paul@nowt.org>
+
+This file is part of the GNU Fortran 95 runtime library (libgfortran).
+
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 3 of the License, or (at your option) any later version.
+
+Libgfortran is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+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/>.  */
+
+#include "libgfortran.h"
+#include <string.h>
+
+static void
+do_pause (void)
+{
+  char buff[4];
+  st_printf ("To resume execution, type go.  "
+	     "Other input will terminate the job.\n");
+
+  fgets(buff, 4, stdin);
+  if (strncmp(buff, "go\n", 3) != 0)
+    stop_string ('\0', 0);
+  st_printf ("RESUMED\n");
+}
+
+/* A numeric PAUSE statement.  */
+
+extern void pause_numeric (GFC_INTEGER_4);
+export_proto(pause_numeric);
+
+void
+pause_numeric (GFC_INTEGER_4 code)
+{
+  st_printf ("PAUSE %d\n", (int) code);
+  do_pause ();
+}
+
+/* A character string or blank PAUSE statement.  */
+
+extern void pause_string (char *string, GFC_INTEGER_4 len);
+export_proto(pause_string);
+
+void
+pause_string (char *string, GFC_INTEGER_4 len)
+{
+  st_printf ("PAUSE ");
+  while (len--)
+    st_printf ("%c", *(string++));
+  st_printf ("\n");
+
+  do_pause ();
+}