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) 1987-2021 Free Software Foundation, Inc.
6
7 This file is part of GCC.
8
9 GCC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3, or (at your option)
12 any later version.
13
14 GCC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along 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 "statistics.h"
32 #include "vec.h"
33 #include "read-md.h"
34
35 /* Called via traverse_md_constants; emit a #define for
36 the current constant definition. */
37
38 static int
print_md_constant(void ** slot,void * info ATTRIBUTE_UNUSED)39 print_md_constant (void **slot, void *info ATTRIBUTE_UNUSED)
40 {
41 struct md_constant *def = (struct md_constant *) *slot;
42
43 if (!def->parent_enum)
44 printf ("#define %s %s\n", def->name, def->value);
45 return 1;
46 }
47
48 /* Called via traverse_enums. Emit an enum definition for
49 enum_type *SLOT. */
50
51 static int
print_enum_type(void ** slot,void * info ATTRIBUTE_UNUSED)52 print_enum_type (void **slot, void *info ATTRIBUTE_UNUSED)
53 {
54 struct enum_type *def;
55 struct enum_value *value;
56 char *value_name;
57
58 def = (struct enum_type *) *slot;
59 printf ("\nenum %s {", def->name);
60 for (value = def->values; value; value = value->next)
61 {
62 printf ("\n %s = %s", value->def->name, value->def->value);
63 if (value->next)
64 putc (',', stdout);
65 }
66 printf ("\n};\n");
67
68 /* Define NUM_<enum>_VALUES to be the largest enum value + 1. */
69 value_name = ACONCAT (("num_", def->name, "_values", NULL));
70 upcase_string (value_name);
71 printf ("#define %s %d\n", value_name, def->num_values);
72
73 /* Declare the array that is generated by genenum. */
74 printf ("extern const char *const %s_strings[];\n", def->name);
75
76 return 1;
77 }
78
79 int
main(int argc,const char ** argv)80 main (int argc, const char **argv)
81 {
82 progname = "genconstants";
83
84 noop_reader reader;
85 if (!reader.read_md_files (argc, argv, NULL))
86 return (FATAL_EXIT_CODE);
87
88 /* Initializing the MD reader has the side effect of loading up
89 the constants table that we wish to scan. */
90
91 puts ("/* Generated automatically by the program `genconstants'");
92 puts (" from the machine description file `md'. */\n");
93 puts ("#ifndef GCC_INSN_CONSTANTS_H");
94 puts ("#define GCC_INSN_CONSTANTS_H\n");
95
96 reader.traverse_md_constants (print_md_constant, 0);
97 reader.traverse_enum_types (print_enum_type, 0);
98
99 puts ("\n#endif /* GCC_INSN_CONSTANTS_H */");
100
101 if (ferror (stdout) || fflush (stdout) || fclose (stdout))
102 return FATAL_EXIT_CODE;
103
104 return SUCCESS_EXIT_CODE;
105 }
106