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, 1991, 1995, 1998, 1999, 2000, 2001, 2003, 2004, 6 2007, 2010 Free Software Foundation, Inc. 7 8 This file is part of GCC. 9 10 GCC is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3, or (at your option) 13 any later version. 14 15 GCC is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with GCC; see the file COPYING3. If not see 22 <http://www.gnu.org/licenses/>. */ 23 24 /* This program does not use gensupport.c because it does not need to 25 look at insn patterns, only (define_constants), and we want to 26 minimize dependencies. */ 27 28 #include "bconfig.h" 29 #include "system.h" 30 #include "coretypes.h" 31 #include "errors.h" 32 #include "read-md.h" 33 34 /* Called via traverse_md_constants; emit a #define for 35 the current constant definition. */ 36 37 static int 38 print_md_constant (void **slot, void *info ATTRIBUTE_UNUSED) 39 { 40 struct md_constant *def = (struct md_constant *) *slot; 41 42 if (!def->parent_enum) 43 printf ("#define %s %s\n", def->name, def->value); 44 return 1; 45 } 46 47 /* Called via traverse_enums. Emit an enum definition for 48 enum_type *SLOT. */ 49 50 static int 51 print_enum_type (void **slot, void *info ATTRIBUTE_UNUSED) 52 { 53 struct enum_type *def; 54 struct enum_value *value; 55 char *value_name; 56 57 def = (struct enum_type *) *slot; 58 printf ("\nenum %s {", def->name); 59 for (value = def->values; value; value = value->next) 60 { 61 printf ("\n %s = %s", value->def->name, value->def->value); 62 if (value->next) 63 putc (',', stdout); 64 } 65 printf ("\n};\n"); 66 67 /* Define NUM_<enum>_VALUES to be the largest enum value + 1. */ 68 value_name = ACONCAT (("num_", def->name, "_values", NULL)); 69 upcase_string (value_name); 70 printf ("#define %s %d\n", value_name, def->num_values); 71 72 /* Declare the array that is generated by genenum. */ 73 printf ("extern const char *const %s_strings[];\n", def->name); 74 75 return 1; 76 } 77 78 int 79 main (int argc, char **argv) 80 { 81 progname = "genconstants"; 82 83 if (!read_md_files (argc, argv, NULL, NULL)) 84 return (FATAL_EXIT_CODE); 85 86 /* Initializing the MD reader has the side effect of loading up 87 the constants table that we wish to scan. */ 88 89 puts ("/* Generated automatically by the program `genconstants'"); 90 puts (" from the machine description file `md'. */\n"); 91 puts ("#ifndef GCC_INSN_CONSTANTS_H"); 92 puts ("#define GCC_INSN_CONSTANTS_H\n"); 93 94 traverse_md_constants (print_md_constant, 0); 95 traverse_enum_types (print_enum_type, 0); 96 97 puts ("\n#endif /* GCC_INSN_CONSTANTS_H */"); 98 99 if (ferror (stdout) || fflush (stdout) || fclose (stdout)) 100 return FATAL_EXIT_CODE; 101 102 return SUCCESS_EXIT_CODE; 103 } 104