1/* Generate from machine description:
2   a series of #define statements, one for each constant named in
3   a (define_constants ...) pattern.
4
5   Copyright (C) 1987-2015 Free Software Foundation, Inc.
6
7This file is part of GCC.
8
9GCC is free software; you can redistribute it and/or modify
10it under the terms of the GNU General Public License as published by
11the Free Software Foundation; either version 3, or (at your option)
12any later version.
13
14GCC is distributed in the hope that it will be useful,
15but WITHOUT ANY WARRANTY; without even the implied warranty of
16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17GNU General Public License for more details.
18
19You should have received a copy of the GNU General Public License
20along with GCC; see the file COPYING3.  If not see
21<http://www.gnu.org/licenses/>.  */
22
23/* This program does not use gensupport.c because it does not need to
24   look at insn patterns, only (define_constants), and we want to
25   minimize dependencies.  */
26
27#include "bconfig.h"
28#include "system.h"
29#include "coretypes.h"
30#include "errors.h"
31#include "read-md.h"
32
33/* Called via traverse_md_constants; emit a #define for
34   the current constant definition.  */
35
36static int
37print_md_constant (void **slot, void *info ATTRIBUTE_UNUSED)
38{
39  struct md_constant *def = (struct md_constant *) *slot;
40
41  if (!def->parent_enum)
42    printf ("#define %s %s\n", def->name, def->value);
43  return 1;
44}
45
46/* Called via traverse_enums.  Emit an enum definition for
47   enum_type *SLOT.  */
48
49static int
50print_enum_type (void **slot, void *info ATTRIBUTE_UNUSED)
51{
52  struct enum_type *def;
53  struct enum_value *value;
54  char *value_name;
55
56  def = (struct enum_type *) *slot;
57  printf ("\nenum %s {", def->name);
58  for (value = def->values; value; value = value->next)
59    {
60      printf ("\n  %s = %s", value->def->name, value->def->value);
61      if (value->next)
62	putc (',', stdout);
63    }
64  printf ("\n};\n");
65
66  /* Define NUM_<enum>_VALUES to be the largest enum value + 1.  */
67  value_name = ACONCAT (("num_", def->name, "_values", NULL));
68  upcase_string (value_name);
69  printf ("#define %s %d\n", value_name, def->num_values);
70
71  /* Declare the array that is generated by genenum.  */
72  printf ("extern const char *const %s_strings[];\n", def->name);
73
74  return 1;
75}
76
77int
78main (int argc, char **argv)
79{
80  progname = "genconstants";
81
82  if (!read_md_files (argc, argv, NULL, NULL))
83    return (FATAL_EXIT_CODE);
84
85  /* Initializing the MD reader has the side effect of loading up
86     the constants table that we wish to scan.  */
87
88  puts ("/* Generated automatically by the program `genconstants'");
89  puts ("   from the machine description file `md'.  */\n");
90  puts ("#ifndef GCC_INSN_CONSTANTS_H");
91  puts ("#define GCC_INSN_CONSTANTS_H\n");
92
93  traverse_md_constants (print_md_constant, 0);
94  traverse_enum_types (print_enum_type, 0);
95
96  puts ("\n#endif /* GCC_INSN_CONSTANTS_H */");
97
98  if (ferror (stdout) || fflush (stdout) || fclose (stdout))
99    return FATAL_EXIT_CODE;
100
101  return SUCCESS_EXIT_CODE;
102}
103