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) 1987-2020 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 "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 38static int 39print_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 51static int 52print_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 79int 80main (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