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) 1987-2018 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 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 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 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