1/* Definitions of target machine for GNU compiler, for the pdp-11
2   Copyright (C) 2000-2020 Free Software Foundation, Inc.
3   Contributed by Michael K. Gschwind (mike@vlsivie.tuwien.ac.at).
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 3, or (at your option)
10any later version.
11
12GCC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING3.  If not see
19<http://www.gnu.org/licenses/>.  */
20
21/* declarations */
22#ifdef RTX_CODE
23extern int simple_memory_operand (rtx, machine_mode);
24extern int no_side_effect_operand (rtx, machine_mode);
25extern int legitimate_const_double_p (rtx);
26extern void notice_update_cc_on_set (rtx, rtx);
27extern void output_addr_const_pdp11 (FILE *, rtx);
28extern const char *output_move_multiple (rtx *);
29extern const char *output_jump (rtx *, int, int);
30extern void print_operand_address (FILE *, rtx);
31typedef enum { no_action, dec_before, inc_after } pdp11_action;
32typedef enum { little, either, big } pdp11_partorder;
33extern bool pdp11_expand_operands (rtx *, rtx [][2], int, int,
34				   pdp11_action *, pdp11_partorder);
35extern int pdp11_initial_elimination_offset (int, int);
36extern enum reg_class pdp11_regno_reg_class (int);
37extern bool pdp11_fixed_cc_regs (unsigned int *, unsigned int *);
38extern machine_mode pdp11_cc_mode (enum rtx_code, rtx, rtx);
39extern bool pdp11_expand_shift (rtx *, rtx (*) (rtx, rtx, rtx),
40				rtx (*) (rtx, rtx, rtx));
41extern const char * pdp11_assemble_shift (rtx *, machine_mode, int);
42extern int pdp11_shift_length (rtx *, machine_mode, int, bool);
43extern int pdp11_cmp_length (rtx *, int);
44extern bool pushpop_regeq (rtx, int);
45extern bool pdp11_small_shift (int);
46
47#endif /* RTX_CODE */
48
49extern void output_ascii (FILE *, const char *, int);
50extern void pdp11_asm_output_var (FILE *, const char *, int, int, bool);
51extern void pdp11_expand_prologue (void);
52extern void pdp11_expand_epilogue (void);
53extern poly_int64 pdp11_push_rounding (poly_int64);
54extern void pdp11_gen_int_label (char *, const char *, int);
55extern void pdp11_output_labelref (FILE *, const char *);
56extern void pdp11_output_def (FILE *, const char *, const char *);
57extern void pdp11_output_addr_vec_elt (FILE *, int);
58