gcc/bi-opcode.c

   1 /* Utility to generate opcode list from bytecode definition.
   2    Copyright (C) 1993, 1994, 1998 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, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 #include "hconfig.h"
  22 #include "system.h"
  23 #include "bi-defs.h"
  24
  25 int
  26 main(argc, argv)
  27      int argc;
  28      char **argv;
  29 {
  30   struct def *d;
  31   struct variation *v;
  32   int i;
  33
  34   yyparse();
  35   reverse();
  36
  37
  38   printf ("/* This file is automatically generated from bytecode.def,\n");
  39   printf ("do not make any changes here. Instead edit bytecode.def.  */\n\n");
  40   printf ("enum bytecode_opcode\n{");
  41
  42   i = 0;
  43   for (d = defs; d; d = d->next)
  44     for (v = d->variations; v; v = v->next)
  45       {
  46         printf ("  %s%s,\n", d->basename, v->name);
  47         ++i;
  48       }
  49
  50   puts ("  LAST_AND_UNUSED_OPCODE\n};");
  51
  52   if (i > 256)
  53     fprintf (stderr, "%s: warning, number of opcodes is %d\n", *argv, i);
  54   else
  55     fprintf (stderr, "(Number of opcodes is %d)\n", i);
  56
  57   fflush (stdout);
  58   exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
  59   /* NOTREACHED */
  60   return 0;
  61 }
  62
  63 /* Safely allocate NBYTES bytes of memory. Returns pointer to block of
  64    memory.  */
  65
  66 char *
  67 xmalloc (nbytes)
  68      int nbytes;
  69 {
  70   char *tmp = (char *) malloc (nbytes);
  71
  72   if (!tmp)
  73     {
  74       fprintf (stderr, "can't allocate %d bytes (out of virtual memory)\n", nbytes);
  75       exit (FATAL_EXIT_CODE);
  76     }
  77
  78   return tmp;
  79 }
  80
  81 /* More 'friendly' abort that prints the line and file.
  82    hconfig.h can #define abort fancy_abort if you like that sort of thing.  */
  83
  84 void
  85 fancy_abort ()
  86 {
  87   fprintf (stderr, "Internal gcc abort.\n");
  88   exit (FATAL_EXIT_CODE);
  89 }