9e6f803254
Gcc and clang both provide an attribute that can be used to flag a function as deprecated at compile time. This changeset adds a gem5 compiler macro for that compiler feature. The macro can be used to indicate that a legacy API within gem5 has been deprecated and provide a graceful migration to the new API.
94 lines
3.6 KiB
C++
94 lines
3.6 KiB
C++
/*
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* Copyright (c) 2012 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Copyright (c) 2006 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Ali Saidi
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*/
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#ifndef __BASE_COMPILER_HH__
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#define __BASE_COMPILER_HH__
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// gcc C++11 status: http://gcc.gnu.org/projects/cxx0x.html
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// clang C++11 status: http://clang.llvm.org/cxx_status.html
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// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
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/* Support for override control (final/override) */
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#undef M5_COMP_HAS_OVERRIDE_CONTROL
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#if defined(__GNUC__) && !defined(__clang__) /* Check for gcc */
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# define M5_GCC_VERSION(maj, min) \
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(__GNUC__ > (maj) || (__GNUC__ == (maj) && __GNUC_MINOR__ >= (min)))
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# define M5_COMP_HAS_OVERRIDE_CONTROL M5_GCC_VERSION(4, 7)
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#elif defined(__clang__) /* Check for clang */
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# define M5_COMP_HAS_OVERRIDE_CONTROL __has_feature(cxx_override_control)
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#else
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# error "Need to define compiler options in base/compiler.hh"
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#endif
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#if M5_COMP_HAS_OVERRIDE_CONTROL
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# define M5_ATTR_FINAL final
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# define M5_ATTR_OVERRIDE override
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#else
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# define M5_ATTR_FINAL
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# define M5_ATTR_OVERRIDE
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#endif
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#if defined(__GNUC__) // clang or gcc
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# define M5_ATTR_NORETURN __attribute__((noreturn))
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# define M5_DUMMY_RETURN
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# define M5_VAR_USED __attribute__((unused))
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# define M5_ATTR_PACKED __attribute__ ((__packed__))
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# define M5_NO_INLINE __attribute__ ((__noinline__))
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# define M5_DEPRECATED __attribute__((deprecated))
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# define M5_DEPRECATED_MSG(MSG) __attribute__((deprecated(MSG)))
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#endif
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#if defined(__clang__)
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# define M5_CLASS_VAR_USED M5_VAR_USED
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#else
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# define M5_CLASS_VAR_USED
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#endif
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#endif // __BASE_COMPILER_HH__
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