1/* Subroutine declarations for Altera Nios II target support.
2   Copyright (C) 2012-2015 Free Software Foundation, Inc.
3   Contributed by Jonah Graham (jgraham@altera.com).
4   Contributed by Mentor Graphics, Inc.
5
6   This file is part of GCC.
7
8   GCC is free software; you can redistribute it and/or modify it
9   under the terms of the GNU General Public License as published
10   by the Free Software Foundation; either version 3, or (at your
11   option) any later version.
12
13   GCC is distributed in the hope that it will be useful, but WITHOUT
14   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
16   License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with GCC; see the file COPYING3.  If not see
20   <http://www.gnu.org/licenses/>.  */
21
22#ifndef GCC_NIOS2_PROTOS_H
23#define GCC_NIOS2_PROTOS_H
24
25extern int nios2_initial_elimination_offset (int, int);
26extern int nios2_can_use_return_insn (void);
27extern void nios2_expand_prologue (void);
28extern void nios2_expand_epilogue (bool);
29extern void nios2_function_profiler (FILE *, int);
30
31#ifdef RTX_CODE
32extern int nios2_emit_move_sequence (rtx *, machine_mode);
33extern void nios2_emit_expensive_div (rtx *, machine_mode);
34extern void nios2_adjust_call_address (rtx *, rtx);
35
36extern rtx nios2_get_return_address (int);
37extern void nios2_set_return_address (rtx, rtx);
38
39extern bool nios2_validate_compare (machine_mode, rtx *, rtx *, rtx *);
40extern bool nios2_validate_fpu_compare (machine_mode, rtx *, rtx *, rtx *,
41					bool);
42
43extern bool nios2_fpu_insn_enabled (enum n2fpu_code);
44extern const char * nios2_fpu_insn_asm (enum n2fpu_code);
45
46extern bool nios2_legitimate_pic_operand_p (rtx);
47extern bool nios2_symbol_ref_in_small_data_p (rtx);
48extern bool nios2_regno_ok_for_base_p (int, bool);
49extern bool nios2_unspec_reloc_p (rtx);
50
51#ifdef TREE_CODE
52#ifdef ARGS_SIZE_RTX
53/* expr.h defines both ARGS_SIZE_RTX and `enum direction' */
54extern enum direction nios2_function_arg_padding (machine_mode, const_tree);
55extern enum direction nios2_block_reg_padding (machine_mode, tree, int);
56#endif /* ARGS_SIZE_RTX */
57
58#endif /* TREE_CODE */
59#endif /* RTX_CODE */
60
61#endif /* GCC_NIOS2_PROTOS_H */
62