/*
* Copyright (C) 2018-2020 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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.
*/
#pragma once
#if CPU(ARM64E)
#include <ptrauth.h>
#endif
namespace WTF {
#if COMPILER_HAS_CLANG_BUILTIN(__builtin_get_vtable_pointer)
template<typename T>
ALWAYS_INLINE const void* getVTablePointer(T* o) { return __builtin_get_vtable_pointer(o); }
#else // not COMPILER_HAS_CLANG_BUILTIN(__builtin_get_vtable_pointer)
ALWAYS_INLINE const void* getVTablePointer(T* o) { return __builtin_ptrauth_auth(*(reinterpret_cast<void**>(o)), ptrauth_key_cxx_vtable_pointer, 0); }
#else // not CPU(ARM64E)
ALWAYS_INLINE const void* getVTablePointer(T* o) { return (*(reinterpret_cast<void**>(o))); }
#endif // not CPU(ARM64E)
#endif // not COMPILER_HAS_CLANG_BUILTIN(__builtin_get_vtable_pointer)
} // namespace WTF
using WTF::getVTablePointer;
