xref: /external/chromium_org/third_party/WebKit/Source/platform/heap/AddressSanitizer.h

/*
 * Copyright (C) 2014 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef AddressSanitizer_h
#define AddressSanitizer_h

// FIXME: Add SyZyASan support?
#if defined(ADDRESS_SANITIZER)
#include <sanitizer/asan_interface.h>
#else
#define ASAN_POISON_MEMORY_REGION(addr, size)   \
    ((void)(addr), (void)(size))
#define ASAN_UNPOISON_MEMORY_REGION(addr, size) \
    ((void)(addr), (void)(size))
#endif

#if defined(LEAK_SANITIZER)
#include <sanitizer/lsan_interface.h>
#else
#define __lsan_register_root_region(addr, size) ((void)(addr), (void)(size))
#define __lsan_unregister_root_region(addr, size) ((void)(addr), (void)(size))
#endif

// FIXME: Have to handle (ADDRESS_SANITIZER && _WIN32) differently as it uses
// both Clang (which supports the __attribute__ syntax) and CL (which doesn't)
// as long as we use "clang-cl /fallback". This shouldn't be needed when Clang
// handles all the code without falling back to CL.
#if defined(ADDRESS_SANITIZER) && (!OS(WIN) || COMPILER(CLANG))
#define NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address))
#else
#define NO_SANITIZE_ADDRESS
#endif

const size_t asanMagic = 0xabefeed0;
const size_t asanDeferMemoryReuseCount = 2;
const size_t asanDeferMemoryReuseMask = 0x3;

#endif