mozglue/build/WindowsCFGStatus.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef mozilla_windowscfgstatus_h
   7 #define mozilla_windowscfgstatus_h
   8
   9 #if defined(_MSC_VER) && \
  10     (defined(_M_IX86) || defined(_M_X64) || defined(_M_ARM64))
  11
  12 #  include <windows.h>
  13 #  include "mozilla/Attributes.h"
  14 #  include "mozilla/Types.h"
  15
  16 extern "C" {
  17
  18 /**
  19  * Tests for Microsoft's Control Flow Guard compiler security feature.
  20  * This function will crash if CFG is enabled.
  21  *
  22  * There is a dependency on the calling convention in
  23  * toolkit/xre/test/browser_checkcfgstatus.js so be sure to update that
  24  * if it changes.
  25  *
  26  * @returns false if CFG is not enabled. Crashes if CFG is enabled.
  27  * It will never return true.
  28  */
  29 MFBT_API bool CFG_DisabledOrCrash();
  30 }
  31
  32 #endif  // defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))
  33 #endif  // mozilla_windowscfgstatus_h