1 /* Generate from machine description: 2 - some macros CODE_FOR_... giving the insn_code_number value 3 for each of the defined standard insn names. 4 Copyright (C) 1987-2018 Free Software Foundation, Inc. 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify it under 9 the terms of the GNU General Public License as published by the Free 10 Software Foundation; either version 3, or (at your option) any later 11 version. 12 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16 for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GCC; see the file COPYING3. If not see 20 <http://www.gnu.org/licenses/>. */ 21 22 23 #include "bconfig.h" 24 #include "system.h" 25 #include "coretypes.h" 26 #include "tm.h" 27 #include "rtl.h" 28 #include "errors.h" 29 #include "gensupport.h" 30 31 static void 32 gen_insn (md_rtx_info *info) 33 { 34 const char *name = XSTR (info->def, 0); 35 int truth = maybe_eval_c_test (XSTR (info->def, 2)); 36 37 /* Don't mention instructions whose names are the null string 38 or begin with '*'. They are in the machine description just 39 to be recognized. */ 40 if (name[0] != 0 && name[0] != '*') 41 { 42 if (truth == 0) 43 printf (",\n CODE_FOR_%s = CODE_FOR_nothing", name); 44 else 45 printf (",\n CODE_FOR_%s = %d", name, info->index); 46 } 47 } 48 49 int 50 main (int argc, const char **argv) 51 { 52 progname = "gencodes"; 53 54 /* We need to see all the possibilities. Elided insns may have 55 direct references to CODE_FOR_xxx in C code. */ 56 insn_elision = 0; 57 58 if (!init_rtx_reader_args (argc, argv)) 59 return (FATAL_EXIT_CODE); 60 61 printf ("\ 62 /* Generated automatically by the program `gencodes'\n\ 63 from the machine description file `md'. */\n\ 64 \n\ 65 #ifndef GCC_INSN_CODES_H\n\ 66 #define GCC_INSN_CODES_H\n\ 67 \n\ 68 enum insn_code {\n\ 69 CODE_FOR_nothing = 0"); 70 71 /* Read the machine description. */ 72 73 md_rtx_info info; 74 while (read_md_rtx (&info)) 75 switch (GET_CODE (info.def)) 76 { 77 case DEFINE_INSN: 78 case DEFINE_EXPAND: 79 gen_insn (&info); 80 break; 81 82 default: 83 break; 84 } 85 86 printf ("\n};\n\ 87 \n\ 88 const unsigned int NUM_INSN_CODES = %d;\n\ 89 #endif /* GCC_INSN_CODES_H */\n", get_num_insn_codes ()); 90 91 if (ferror (stdout) || fflush (stdout) || fclose (stdout)) 92 return FATAL_EXIT_CODE; 93 94 return SUCCESS_EXIT_CODE; 95 } 96