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