[8833] | 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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