annotate gcc/gencodes.c @ 16:04ced10e8804

gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents f6334be47118
children 84e7813d76e9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Generate from machine description:
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2 - some macros CODE_FOR_... giving the insn_code_number value
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3 for each of the defined standard insn names.
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4 Copyright (C) 1987-2017 Free Software Foundation, Inc.
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify it under
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9 the terms of the GNU General Public License as published by the Free
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10 Software Foundation; either version 3, or (at your option) any later
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11 version.
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12
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13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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23 #include "bconfig.h"
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24 #include "system.h"
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25 #include "coretypes.h"
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26 #include "tm.h"
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27 #include "rtl.h"
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28 #include "errors.h"
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29 #include "gensupport.h"
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31 static void
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32 gen_insn (md_rtx_info *info)
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33 {
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34 const char *name = XSTR (info->def, 0);
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35 int truth = maybe_eval_c_test (XSTR (info->def, 2));
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36
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37 /* Don't mention instructions whose names are the null string
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38 or begin with '*'. They are in the machine description just
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39 to be recognized. */
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40 if (name[0] != 0 && name[0] != '*')
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41 {
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42 if (truth == 0)
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43 printf (",\n CODE_FOR_%s = CODE_FOR_nothing", name);
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44 else
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45 printf (",\n CODE_FOR_%s = %d", name, info->index);
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46 }
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47 }
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49 int
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50 main (int argc, const char **argv)
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51 {
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52 progname = "gencodes";
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53
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54 /* We need to see all the possibilities. Elided insns may have
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55 direct references to CODE_FOR_xxx in C code. */
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56 insn_elision = 0;
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57
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58 if (!init_rtx_reader_args (argc, argv))
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59 return (FATAL_EXIT_CODE);
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61 printf ("\
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62 /* Generated automatically by the program `gencodes'\n\
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63 from the machine description file `md'. */\n\
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64 \n\
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65 #ifndef GCC_INSN_CODES_H\n\
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66 #define GCC_INSN_CODES_H\n\
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67 \n\
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68 enum insn_code {\n\
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69 CODE_FOR_nothing = 0");
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71 /* Read the machine description. */
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72
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73 md_rtx_info info;
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74 while (read_md_rtx (&info))
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75 switch (GET_CODE (info.def))
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76 {
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77 case DEFINE_INSN:
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78 case DEFINE_EXPAND:
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79 gen_insn (&info);
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80 break;
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82 default:
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83 break;
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84 }
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86 printf ("\n};\n\
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87 \n\
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88 const unsigned int NUM_INSN_CODES = %d;\n\
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89 #endif /* GCC_INSN_CODES_H */\n", get_num_insn_codes ());
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91 if (ferror (stdout) || fflush (stdout) || fclose (stdout))
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92 return FATAL_EXIT_CODE;
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94 return SUCCESS_EXIT_CODE;
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95 }