gcc/bi-opcode.c

   1 /* Utility to generate opcode list from bytecode definition.
   2    Copyright (C) 1993, 1994 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU CC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #include <stdio.h>
  21 #include "hconfig.h"
  22 #include "bi-defs.h"
  23
  24 int
  25 main(argc, argv)
  26      int argc;
  27      char **argv;
  28 {
  29   struct def *d;
  30   struct variation *v;
  31   int i;
  32
  33   yyparse();
  34   reverse();
  35
  36
  37   printf ("/* This file is automatically generated from bytecode.def,\n");
  38   printf ("do not make any changes here. Instead edit bytecode.def.  */\n\n");
  39   printf ("enum bytecode_opcode\n{");
  40
  41   i = 0;
  42   for (d = defs; d; d = d->next)
  43     for (v = d->variations; v; v = v->next)
  44       {
  45         printf ("  %s%s,\n", d->basename, v->name);
  46         ++i;
  47       }
  48
  49   puts ("  LAST_AND_UNUSED_OPCODE\n};");
  50
  51   if (i > 256)
  52     fprintf (stderr, "%s: warning, number of opcodes is %d\n", *argv, i);
  53   else
  54     fprintf (stderr, "(Number of opcodes is %d)\n", i);
  55
  56   fflush (stdout);
  57   exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
  58   /* NOTREACHED */
  59   return 0;
  60 }
  61
  62 /* Safely allocate NBYTES bytes of memory. Returns pointer to block of
  63    memory. */
  64 char *
  65 xmalloc (nbytes)
  66      int nbytes;
  67 {
  68   char *tmp = (char *) malloc (nbytes);
  69
  70   if (!tmp)
  71     {
  72       fprintf (stderr, "can't allocate %d bytes (out of virtual memory)\n", nbytes);
  73       exit (FATAL_EXIT_CODE);
  74     }
  75
  76   return tmp;
  77 }