gcc/tree-nomudflap.c

   1 /* Mudflap: narrow-pointer bounds-checking by tree rewriting.
   2    Copyright (C) 2001, 2002, 2003, 2007, 2008, 2009, 2010
   3    Free Software Foundation, Inc.
   4    Contributed by Frank Ch. Eigler <fche@redhat.com>
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22
  23 #include "config.h"
  24 #include "system.h"
  25 #include "coretypes.h"
  26 #include "tm.h"
  27 #include "tree.h"
  28 #include "tree-inline.h"
  29 #include "gimple.h"
  30 #include "hashtab.h"
  31 #include "output.h"
  32 #include "langhooks.h"
  33 #include "tree-mudflap.h"
  34 #include "tree-pass.h"
  35 #include "ggc.h"
  36 #include "diagnostic-core.h"
  37
  38
  39
  40 /* This file contains placeholder functions, to be used only for
  41    language processors that cannot handle tree-mudflap.c directly.
  42    (e.g. Fortran).  */
  43
  44 static void
  45 nogo (void)
  46 {
  47   internal_error ("mudflap: this language is not supported");
  48 }
  49
  50 void
  51 mudflap_enqueue_decl (tree obj ATTRIBUTE_UNUSED)
  52 {
  53   nogo ();
  54 }
  55
  56 void
  57 mudflap_enqueue_constant (tree obj ATTRIBUTE_UNUSED)
  58 {
  59   nogo ();
  60 }
  61
  62 void
  63 mudflap_finish_file (void)
  64 {
  65   nogo ();
  66 }
  67
  68 int
  69 mf_marked_p (tree t ATTRIBUTE_UNUSED)
  70 {
  71   nogo ();
  72   return 0;
  73 }
  74
  75 tree
  76 mf_mark (tree t ATTRIBUTE_UNUSED)
  77 {
  78   nogo ();
  79   return NULL;
  80 }
  81
  82 /* The pass structures must exist, but need not do anything.  */
  83
  84 static bool
  85 gate_mudflap (void)
  86 {
  87   return flag_mudflap != 0;
  88 }
  89
  90 struct gimple_opt_pass pass_mudflap_1 =
  91 {
  92  {
  93   GIMPLE_PASS,
  94   "mudflap1",                           /* name */
  95   gate_mudflap,                         /* gate */
  96   NULL,                                 /* execute */
  97   NULL,                                 /* sub */
  98   NULL,                                 /* next */
  99   0,                                    /* static_pass_number */
 100   TV_NONE,                              /* tv_id */
 101   0,                                    /* properties_required */
 102   0,                                    /* properties_provided */
 103   0,                                    /* properties_destroyed */
 104   0,                                    /* todo_flags_start */
 105   0                                     /* todo_flags_finish */
 106  }
 107 };
 108
 109 struct gimple_opt_pass pass_mudflap_2 =
 110 {
 111  {
 112   GIMPLE_PASS,
 113   "mudflap2",                           /* name */
 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 };