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/*
* Copyright (c) 2012,2017-2018 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Copyright (c) 2006 The Regents of The University of Michigan
* 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 the copyright holders 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.
*
* Authors: Ali Saidi
*/
#ifndef __BASE_COMPILER_HH__
#define __BASE_COMPILER_HH__
#include <memory>
// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
#if defined(__GNUC__) // clang or gcc
# define M5_ATTR_NORETURN __attribute__((noreturn))
# define M5_DUMMY_RETURN
# define M5_VAR_USED __attribute__((unused))
# define M5_ATTR_PACKED __attribute__ ((__packed__))
# define M5_NO_INLINE __attribute__ ((__noinline__))
# define M5_DEPRECATED __attribute__((deprecated))
# define M5_DEPRECATED_MSG(MSG) __attribute__((deprecated(MSG)))
# define M5_UNREACHABLE __builtin_unreachable()
# define M5_PUBLIC __attribute__ ((visibility ("default")))
# define M5_LOCAL __attribute__ ((visibility ("hidden")))
#endif
#if defined(__clang__)
# define M5_CLASS_VAR_USED M5_VAR_USED
#else
# define M5_CLASS_VAR_USED
#endif
// This can be removed once all compilers support C++17
#if defined __has_cpp_attribute
// Note: We must separate this if statement because GCC < 5.0 doesn't
// support the function-like syntax in #if statements.
#if __has_cpp_attribute(fallthrough)
#define M5_FALLTHROUGH [[fallthrough]]
#else
#define M5_FALLTHROUGH
#endif
#if __has_cpp_attribute(nodiscard)
#define M5_NODISCARD [[nodiscard]]
#else
#define M5_NODISCARD
#endif
#else
// Unsupported (and no warning) on GCC < 7.
#define M5_FALLTHROUGH
#define M5_NODISCARD
#endif
// std::make_unique redefined for C++11 compilers
namespace m5
{
#if __cplusplus == 201402L // C++14
using std::make_unique;
#else // C++11
/** Defining custom version of make_unique: m5::make_unique<>() */
template<typename T, typename... Args>
std::unique_ptr<T>
make_unique( Args&&... constructor_args )
{
return std::unique_ptr<T>(
new T( std::forward<Args>(constructor_args)... )
);
}
#endif // __cplusplus == 201402L
} //namespace m5
#endif // __BASE_COMPILER_HH__
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