1 | /* Generate from machine description: |
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2 | |
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3 | - some macros CODE_FOR_... giving the insn_code_number value |
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4 | for each of the defined standard insn names. |
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5 | Copyright (C) 1987, 1991, 1995 Free Software Foundation, Inc. |
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6 | |
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7 | This file is part of GNU CC. |
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8 | |
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9 | GNU CC is free software; you can redistribute it and/or modify |
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10 | it under the terms of the GNU General Public License as published by |
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11 | the Free Software Foundation; either version 2, or (at your option) |
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12 | any later version. |
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13 | |
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14 | GNU CC is distributed in the hope that it will be useful, |
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15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | GNU General Public License for more details. |
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18 | |
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19 | You should have received a copy of the GNU General Public License |
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20 | along with GNU CC; see the file COPYING. If not, write to |
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21 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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22 | Boston, MA 02111-1307, USA. */ |
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23 | |
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24 | |
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25 | #include <stdio.h> |
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26 | #include "hconfig.h" |
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27 | #include "rtl.h" |
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28 | #include "obstack.h" |
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29 | |
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30 | static struct obstack obstack; |
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31 | struct obstack *rtl_obstack = &obstack; |
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32 | |
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33 | #define obstack_chunk_alloc xmalloc |
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34 | #define obstack_chunk_free free |
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35 | |
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36 | extern void free (); |
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37 | extern rtx read_rtx (); |
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38 | |
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39 | char *xmalloc (); |
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40 | static void fatal (); |
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41 | void fancy_abort (); |
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42 | |
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43 | static int insn_code_number; |
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44 | |
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45 | static void |
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46 | gen_insn (insn) |
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47 | rtx insn; |
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48 | { |
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49 | /* Don't mention instructions whose names are the null string |
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50 | or begin with '*'. They are in the machine description just |
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51 | to be recognized. */ |
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52 | if (XSTR (insn, 0)[0] != 0 && XSTR (insn, 0)[0] != '*') |
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53 | printf (" CODE_FOR_%s = %d,\n", XSTR (insn, 0), |
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54 | insn_code_number); |
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55 | } |
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56 | |
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57 | char * |
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58 | xmalloc (size) |
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59 | unsigned size; |
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60 | { |
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61 | register char *val = (char *) malloc (size); |
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62 | |
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63 | if (val == 0) |
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64 | fatal ("virtual memory exhausted"); |
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65 | return val; |
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66 | } |
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67 | |
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68 | char * |
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69 | xrealloc (ptr, size) |
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70 | char *ptr; |
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71 | unsigned size; |
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72 | { |
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73 | char *result = (char *) realloc (ptr, size); |
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74 | if (!result) |
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75 | fatal ("virtual memory exhausted"); |
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76 | return result; |
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77 | } |
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78 | |
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79 | static void |
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80 | fatal (s, a1, a2) |
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81 | char *s; |
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82 | { |
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83 | fprintf (stderr, "gencodes: "); |
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84 | fprintf (stderr, s, a1, a2); |
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85 | fprintf (stderr, "\n"); |
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86 | exit (FATAL_EXIT_CODE); |
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87 | } |
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88 | |
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89 | /* More 'friendly' abort that prints the line and file. |
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90 | config.h can #define abort fancy_abort if you like that sort of thing. */ |
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91 | |
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92 | void |
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93 | fancy_abort () |
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94 | { |
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95 | fatal ("Internal gcc abort."); |
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96 | } |
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97 | |
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98 | int |
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99 | main (argc, argv) |
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100 | int argc; |
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101 | char **argv; |
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102 | { |
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103 | rtx desc; |
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104 | FILE *infile; |
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105 | register int c; |
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106 | |
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107 | obstack_init (rtl_obstack); |
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108 | |
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109 | if (argc <= 1) |
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110 | fatal ("No input file name."); |
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111 | |
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112 | infile = fopen (argv[1], "r"); |
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113 | if (infile == 0) |
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114 | { |
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115 | perror (argv[1]); |
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116 | exit (FATAL_EXIT_CODE); |
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117 | } |
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118 | |
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119 | init_rtl (); |
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120 | |
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121 | printf ("/* Generated automatically by the program `gencodes'\n\ |
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122 | from the machine description file `md'. */\n\n"); |
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123 | |
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124 | printf ("#ifndef MAX_INSN_CODE\n\n"); |
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125 | |
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126 | /* Read the machine description. */ |
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127 | |
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128 | insn_code_number = 0; |
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129 | printf ("enum insn_code {\n"); |
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130 | |
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131 | while (1) |
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132 | { |
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133 | c = read_skip_spaces (infile); |
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134 | if (c == EOF) |
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135 | break; |
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136 | ungetc (c, infile); |
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137 | |
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138 | desc = read_rtx (infile); |
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139 | if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND) |
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140 | { |
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141 | gen_insn (desc); |
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142 | insn_code_number++; |
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143 | } |
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144 | if (GET_CODE (desc) == DEFINE_PEEPHOLE |
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145 | || GET_CODE (desc) == DEFINE_SPLIT) |
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146 | { |
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147 | insn_code_number++; |
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148 | } |
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149 | } |
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150 | |
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151 | printf (" CODE_FOR_nothing };\n"); |
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152 | |
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153 | printf ("\n#define MAX_INSN_CODE ((int) CODE_FOR_nothing)\n"); |
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154 | |
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155 | printf ("#endif /* MAX_INSN_CODE */\n"); |
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156 | |
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157 | fflush (stdout); |
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158 | exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE); |
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159 | /* NOTREACHED */ |
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160 | return 0; |
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161 | } |
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