gcc/tree-nomudflap.c

   1 /* Mudflap: narrow-pointer bounds-checking by tree rewriting.
   2    Copyright (C) 2001-2013 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 "gimple.h"
  29 #include "hashtab.h"
  30 #include "langhooks.h"
  31 #include "tree-mudflap.h"
  32 #include "tree-pass.h"
  33 #include "ggc.h"
  34 #include "diagnostic-core.h"
  35
  36
  37
  38 /* This file contains placeholder functions, to be used only for
  39    language processors that cannot handle tree-mudflap.c directly.
  40    (e.g. Fortran).  */
  41
  42 static void
  43 nogo (void)
  44 {
  45   sorry ("mudflap: this language is not supported");
  46 }
  47
  48 void
  49 mudflap_enqueue_decl (tree obj ATTRIBUTE_UNUSED)
  50 {
  51   nogo ();
  52 }
  53
  54 void
  55 mudflap_enqueue_constant (tree obj ATTRIBUTE_UNUSED)
  56 {
  57   nogo ();
  58 }
  59
  60 void
  61 mudflap_finish_file (void)
  62 {
  63   nogo ();
  64 }
  65
  66 int
  67 mf_marked_p (tree t ATTRIBUTE_UNUSED)
  68 {
  69   nogo ();
  70   return 0;
  71 }
  72
  73 tree
  74 mf_mark (tree t ATTRIBUTE_UNUSED)
  75 {
  76   nogo ();
  77   return NULL;
  78 }
  79
  80 /* The pass structures must exist, but need not do anything.  */
  81
  82 static bool
  83 gate_mudflap (void)
  84 {
  85   return flag_mudflap != 0;
  86 }
  87
  88 struct gimple_opt_pass pass_mudflap_1 =
  89 {
  90  {
  91   GIMPLE_PASS,
  92   "mudflap1",                           /* name */
  93   OPTGROUP_NONE,                        /* optinfo_flags */
  94   gate_mudflap,                         /* gate */
  95   NULL,                                 /* execute */
  96   NULL,                                 /* sub */
  97   NULL,                                 /* next */
  98   0,                                    /* static_pass_number */
  99   TV_NONE,                              /* tv_id */
 100   0,                                    /* properties_required */
 101   0,                                    /* properties_provided */
 102   0,                                    /* properties_destroyed */
 103   0,                                    /* todo_flags_start */
 104   0                                     /* todo_flags_finish */
 105  }
 106 };
 107
 108 struct gimple_opt_pass pass_mudflap_2 =
 109 {
 110  {
 111   GIMPLE_PASS,
 112   "mudflap2",                           /* name */
 113   OPTGROUP_NONE,                        /* optinfo_flags */
 114   gate_mudflap,                         /* gate */
 115   NULL,                                 /* execute */
 116   NULL,                                 /* sub */
 117   NULL,                                 /* next */
 118   0,                                    /* static_pass_number */
 119   TV_NONE,                              /* tv_id */
 120   0,                                    /* properties_required */
 121   0,                                    /* properties_provided */
 122   0,                                    /* properties_destroyed */
 123   0,                                    /* todo_flags_start */
 124   0                                     /* todo_flags_finish */
 125  }
 126 };
 127
 128 /* Instead of:
 129 #include "gt-tree-mudflap.h"
 130 We prepare a little dummy struct here.
 131 */
 132
 133 EXPORTED_CONST struct ggc_root_tab gt_ggc_r_gt_tree_mudflap_h[] = {
 134   LAST_GGC_ROOT_TAB
 135 };