gcc/tree-nomudflap.c

   1 /* Mudflap: narrow-pointer bounds-checking by tree rewriting.
   2    Copyright (C) 2001, 2002, 2003, 2007 Free Software Foundation, Inc.
   3    Contributed by Frank Ch. Eigler <fche@redhat.com>
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "tm.h"
  26 #include "tree.h"
  27 #include "tree-inline.h"
  28 #include "c-tree.h"
  29 #include "c-common.h"
  30 #include "tree-gimple.h"
  31 #include "diagnostic.h"
  32 #include "hashtab.h"
  33 #include "output.h"
  34 #include "varray.h"
  35 #include "langhooks.h"
  36 #include "tree-mudflap.h"
  37 #include "tree-pass.h"
  38 #include "ggc.h"
  39 #include "toplev.h"
  40
  41
  42
  43 /* This file contains placeholder functions, to be used only for
  44    language processors that cannot handle tree-mudflap.c directly.
  45    (e.g. Fortran).  */
  46
  47 static void
  48 nogo (void)
  49 {
  50   internal_error ("mudflap: this language is not supported");
  51 }
  52
  53 void
  54 mudflap_enqueue_decl (tree obj ATTRIBUTE_UNUSED)
  55 {
  56   nogo ();
  57 }
  58
  59 void
  60 mudflap_enqueue_constant (tree obj ATTRIBUTE_UNUSED)
  61 {
  62   nogo ();
  63 }
  64
  65 void
  66 mudflap_finish_file (void)
  67 {
  68   nogo ();
  69 }
  70
  71 int
  72 mf_marked_p (tree t ATTRIBUTE_UNUSED)
  73 {
  74   nogo ();
  75   return 0;
  76 }
  77
  78 tree
  79 mf_mark (tree t ATTRIBUTE_UNUSED)
  80 {
  81   nogo ();
  82   return NULL;
  83 }
  84
  85 /* The pass structures must exist, but need not do anything.  */
  86
  87 static bool
  88 gate_mudflap (void)
  89 {
  90   return flag_mudflap != 0;
  91 }
  92
  93 struct gimple_opt_pass pass_mudflap_1 =
  94 {
  95  {
  96   GIMPLE_PASS,
  97   "mudflap1",                           /* name */
  98   gate_mudflap,                         /* gate */
  99   NULL,                                 /* execute */
 100   NULL,                                 /* sub */
 101   NULL,                                 /* next */
 102   0,                                    /* static_pass_number */
 103   0,                                    /* tv_id */
 104   0,                                    /* properties_required */
 105   0,                                    /* properties_provided */
 106   0,                                    /* properties_destroyed */
 107   0,                                    /* todo_flags_start */
 108   0                                     /* todo_flags_finish */
 109  }
 110 };
 111
 112 struct gimple_opt_pass pass_mudflap_2 =
 113 {
 114  {
 115   GIMPLE_PASS,
 116   "mudflap2",                           /* name */
 117   gate_mudflap,                         /* gate */
 118   NULL,                                 /* execute */
 119   NULL,                                 /* sub */
 120   NULL,                                 /* next */
 121   0,                                    /* static_pass_number */
 122   0,                                    /* tv_id */
 123   0,                                    /* properties_required */
 124   0,                                    /* properties_provided */
 125   0,                                    /* properties_destroyed */
 126   0,                                    /* todo_flags_start */
 127   0                                     /* todo_flags_finish */
 128  }
 129 };
 130
 131 /* Instead of:
 132 #include "gt-tree-mudflap.h"
 133 We prepare a little dummy struct here.
 134 */
 135
 136 const struct ggc_root_tab gt_ggc_r_gt_tree_mudflap_h[] = {
 137   LAST_GGC_ROOT_TAB
 138 };