1  /* Copyright (C) 2012-2023 Free Software Foundation, Inc.
       2  
       3     This file is part of GCC.
       4  
       5     GCC is free software; you can redistribute it and/or modify
       6     it under the terms of the GNU General Public License as published by
       7     the Free Software Foundation; either version 3, or (at your option)
       8     any later version.
       9  
      10     GCC is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13     GNU General Public License for more details.
      14  
      15     Under Section 7 of GPL version 3, you are granted additional
      16     permissions described in the GCC Runtime Library Exception, version
      17     3.1, as published by the Free Software Foundation.
      18  
      19     You should have received a copy of the GNU General Public License and
      20     a copy of the GCC Runtime Library Exception along with this program;
      21     see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      22     <http://www.gnu.org/licenses/>.  */
      23  
      24  #ifndef _VTV_UTILS_H
      25  #define _VTV_UTILS_H 1
      26  
      27  #include <stdlib.h>
      28  #include "../include/vtv-change-permission.h"
      29  
      30  static inline void
      31  VTV_not_an_error (void)
      32  {
      33  }
      34  
      35  /* Handler for verification runtime errors.  */
      36  #define VTV_error abort
      37  
      38  /* Assertion macros used in vtable verification runtime.  */
      39  #define VTV_ASSERT(EXPR) \
      40    if (!(EXPR)) VTV_error();
      41  
      42  #ifdef VTV_DEBUG
      43  #define VTV_DEBUG_ASSERT(EXPR) \
      44                        ((bool) (!(EXPR)) ? VTV_error() : (void) 0)
      45  #else
      46  #define VTV_DEBUG_ASSERT(EXPR) ((void) 0)
      47  #endif
      48  
      49  /* Name of the section where we put general VTV variables for protection */
      50  #define VTV_PROTECTED_VARS_SECTION ".vtable_map_vars"
      51  #define VTV_PROTECTED_VAR \
      52                         __attribute__ ((section (VTV_PROTECTED_VARS_SECTION)))
      53  
      54  /* The following logging routines try to use low level file access
      55     routines and avoid calling malloc. We need this so that we dont
      56     disturb the order of calls to dlopen.  Changing the order of dlopen
      57     calls may lead to deadlocks */
      58  int __vtv_open_log (const char * name);
      59  int __vtv_add_to_log (int log, const char * format, ...);
      60  void __vtv_log_verification_failure (const char *, bool);
      61  
      62  #endif /* VTV_UTILS_H */