--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/cr16/cr16-protos.h	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,98 @@
+/* Prototypes for exported functions defined in cr16.c
+   Copyright (C) 2012-2017 Free Software Foundation, Inc.
+   Contributed by KPIT Cummins Infosystems Limited.
+
+   This file is part of GCC.
+
+   GCC 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, or (at your
+   option) any later version.
+
+   GCC 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.
+
+   You should have received a copy of the GNU General Public License
+   along with GCC; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_CR16_PROTOS_H
+#define GCC_CR16_PROTOS_H
+
+/* Register usage.  */
+extern enum reg_class cr16_regno_reg_class (int);
+
+/* Passing function arguments.  */
+extern int cr16_function_arg_regno_p (int);
+
+#ifdef TREE_CODE
+#ifdef RTX_CODE
+
+extern void cr16_init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx);
+
+#endif /* RTX_CODE.  */
+#endif /* TREE_CODE.  */
+
+/* Enumeration giving the various data models we support.  */
+enum data_model_type
+{
+  DM_DEFAULT,		/* Default data model (in CR16C/C+ - up to 16M).  */
+  DM_NEAR,		/* Near data model    (in CR16C/C+ - up to 1M).  */
+  DM_FAR,		/* Far data model     (in CR16C+   - up to 4G)
+			   (in CR16C    - up to 16M).  */
+  ILLEGAL_DM		/* Illegal data model.  */
+};
+
+#ifdef RTX_CODE
+
+/* Addressing Modes.  */
+struct cr16_address
+{
+  rtx base;	 	/* Base register: Any register or register pair.  */
+  rtx index;		/* Index register: If one is present.  */
+  rtx disp;		/* Displacement or Absolute address.  */
+  enum data_model_type data;	/* data ref type.  */
+  int code;		/* Whether the address is code address. 
+			   0 - data, 1 - code label, 2 - function label.  */
+};
+
+enum cr16_addrtype
+{
+  CR16_INVALID,
+  CR16_REG_REL,
+  CR16_REGP_REL,
+  CR16_INDEX_REGP_REL,
+  CR16_ABSOLUTE
+};
+
+extern void notice_update_cc (rtx);
+extern int cr16_operand_bit_pos (int val, int bitval);
+extern void cr16_decompose_const (rtx x, int *code,
+				  enum data_model_type *data,
+				  bool treat_as_const);
+extern enum cr16_addrtype cr16_decompose_address (rtx addr,
+						  struct cr16_address *out,
+						  bool debug_print,
+						  bool treat_as_const);
+extern int cr16_const_double_ok (rtx op);
+extern int legitimate_pic_operand_p (rtx);
+extern rtx legitimize_pic_address (rtx, machine_mode, rtx);
+
+
+/* Prologue/Epilogue functions.  */
+extern int cr16_initial_elimination_offset (int, int);
+extern char *cr16_prepare_push_pop_string (int);
+extern void cr16_expand_prologue (void);
+extern void cr16_expand_epilogue (void);
+extern const char *cr16_emit_add_sub_di (rtx *, enum rtx_code);
+extern const char *cr16_emit_logical_di (rtx *, enum rtx_code);
+
+#endif /* RTX_CODE.  */
+
+/* Handling the "interrupt" attribute.  */
+extern int cr16_interrupt_function_p (void);
+extern bool cr16_is_data_model (enum data_model_type);
+
+#endif /* Not GCC_CR16_PROTOS_H.  */