1/* Copyright (C) 2012-2013
2   Free Software Foundation
3
4   This file is part of GCC.
5
6   GCC 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 3, or (at your option)
9   any later version.
10
11   GCC 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   Under Section 7 of GPL version 3, you are granted additional
17   permissions described in the GCC Runtime Library Exception, version
18   3.1, as published by the Free Software Foundation.
19
20   You should have received a copy of the GNU General Public License and
21   a copy of the GCC Runtime Library Exception along with this program;
22   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
23   <http://www.gnu.org/licenses/>.  */
24
25#ifndef _VTV_UTILS_H
26#define _VTV_UTILS_H 1
27
28#include <stdlib.h>
29#include "../include/vtv-change-permission.h"
30
31static inline void
32VTV_not_an_error (void)
33{
34}
35
36/* Handler for verification runtime errors.  */
37#define VTV_error abort
38
39/* Assertion macros used in vtable verification runtime.  */
40#define VTV_ASSERT(EXPR) \
41  if (!(EXPR)) VTV_error();
42
43#ifdef VTV_DEBUG
44#define VTV_DEBUG_ASSERT(EXPR) \
45                      ((bool) (!(EXPR)) ? VTV_error() : (void) 0)
46#else
47#define VTV_DEBUG_ASSERT(EXPR) ((void) 0)
48#endif
49
50/* Name of the section where we put general VTV variables for protection */
51#define VTV_PROTECTED_VARS_SECTION ".vtable_map_vars"
52#define VTV_PROTECTED_VAR \
53                       __attribute__ ((section (VTV_PROTECTED_VARS_SECTION)))
54
55/* The following logging routines try to use low level file access
56   routines and avoid calling malloc. We need this so that we dont
57   disturb the order of calls to dlopen.  Changing the order of dlopen
58   calls may lead to deadlocks */
59int __vtv_open_log (const char * name);
60int __vtv_add_to_log (int log, const char * format, ...);
61void __vtv_log_verification_failure (const char *, bool);
62
63#endif /* VTV_UTILS_H */
64