ceph/src/boost/libs/atomic/include/boost/atomic/detail/platform.hpp

   1 /*
   2  * Distributed under the Boost Software License, Version 1.0.
   3  * (See accompanying file LICENSE_1_0.txt or copy at
   4  * http://www.boost.org/LICENSE_1_0.txt)
   5  *
   6  * Copyright (c) 2009 Helge Bahmann
   7  * Copyright (c) 2014 Andrey Semashev
   8  */
   9 /*!
  10  * \file   atomic/detail/platform.hpp
  11  *
  12  * This header defines macros for the target platform detection
  13  */
  14
  15 #ifndef BOOST_ATOMIC_DETAIL_PLATFORM_HPP_INCLUDED_
  16 #define BOOST_ATOMIC_DETAIL_PLATFORM_HPP_INCLUDED_
  17
  18 #include <boost/atomic/detail/config.hpp>
  19
  20 #ifdef BOOST_HAS_PRAGMA_ONCE
  21 #pragma once
  22 #endif
  23
  24 #if !defined(BOOST_ATOMIC_FORCE_FALLBACK)
  25
  26 // Compiler-based backends
  27 #if (defined(__ibmxl__) || defined(__IBMCPP__)) && defined(__PPC__)
  28
  29 // IBM XL C++ Compiler has to be checked before GCC/Clang as it pretends to be one but does not support __atomic* intrinsics.
  30 // It does support GCC inline assembler though.
  31 #define BOOST_ATOMIC_DETAIL_PLATFORM gcc_ppc
  32
  33 #elif ((defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 407)) ||\
  34     (defined(BOOST_CLANG) && ((__clang_major__ * 100 + __clang_minor__) >= 302))) &&\
  35     (\
  36         (__GCC_ATOMIC_BOOL_LOCK_FREE + 0) == 2 ||\
  37         (__GCC_ATOMIC_CHAR_LOCK_FREE + 0) == 2 ||\
  38         (__GCC_ATOMIC_SHORT_LOCK_FREE + 0) == 2 ||\
  39         (__GCC_ATOMIC_INT_LOCK_FREE + 0) == 2 ||\
  40         (__GCC_ATOMIC_LONG_LOCK_FREE + 0) == 2 ||\
  41         (__GCC_ATOMIC_LLONG_LOCK_FREE + 0) == 2\
  42     )
  43
  44 #define BOOST_ATOMIC_DETAIL_PLATFORM gcc_atomic
  45
  46 #elif (defined(__GNUC__) || defined(__SUNPRO_CC)) && (defined(__i386__) || defined(__x86_64__))
  47
  48 #define BOOST_ATOMIC_DETAIL_PLATFORM gcc_x86
  49
  50 #elif defined(__GNUC__) && (defined(__POWERPC__) || defined(__PPC__))
  51
  52 #define BOOST_ATOMIC_DETAIL_PLATFORM gcc_ppc
  53
  54 // This list of ARM architecture versions comes from Apple's arm/arch.h header.
  55 // I don't know how complete it is.
  56 #elif defined(__GNUC__) &&\
  57     (\
  58         defined(__ARM_ARCH_6__)  || defined(__ARM_ARCH_6J__) ||\
  59         defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) ||\
  60         defined(__ARM_ARCH_6ZK__) ||\
  61         defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) ||\
  62         defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) ||\
  63         defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_7S__)\
  64     )
  65
  66 #define BOOST_ATOMIC_DETAIL_PLATFORM gcc_arm
  67
  68 #elif (defined(__GNUC__) || defined(__SUNPRO_CC)) && (defined(__sparcv8plus) || defined(__sparc_v9__))
  69
  70 #define BOOST_ATOMIC_DETAIL_PLATFORM gcc_sparc
  71
  72 #elif defined(__GNUC__) && defined(__alpha__)
  73
  74 #define BOOST_ATOMIC_DETAIL_PLATFORM gcc_alpha
  75
  76 #elif defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 401) &&\
  77     (\
  78         defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1) ||\
  79         defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2) ||\
  80         defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) ||\
  81         defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8) ||\
  82         defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)\
  83     )
  84
  85 #define BOOST_ATOMIC_DETAIL_PLATFORM gcc_sync
  86
  87 #elif defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))
  88
  89 #define BOOST_ATOMIC_DETAIL_PLATFORM msvc_x86
  90
  91 #elif defined(_MSC_VER) && _MSC_VER >= 1700 && defined(_M_ARM)
  92
  93 #define BOOST_ATOMIC_DETAIL_PLATFORM msvc_arm
  94
  95 #endif
  96
  97 // OS-based backends
  98 #if !defined(BOOST_ATOMIC_DETAIL_PLATFORM)
  99
 100 #if defined(__linux__) && defined(__arm__)
 101
 102 #define BOOST_ATOMIC_DETAIL_PLATFORM linux_arm
 103
 104 #elif defined(BOOST_WINDOWS) || defined(_WIN32_CE)
 105
 106 #define BOOST_ATOMIC_DETAIL_PLATFORM windows
 107
 108 #endif
 109
 110 #endif // !defined(BOOST_ATOMIC_DETAIL_PLATFORM)
 111
 112 #endif // !defined(BOOST_ATOMIC_FORCE_FALLBACK)
 113
 114 #if !defined(BOOST_ATOMIC_DETAIL_PLATFORM)
 115 #define BOOST_ATOMIC_DETAIL_PLATFORM emulated
 116 #define BOOST_ATOMIC_EMULATED
 117 #endif
 118
 119 #define BOOST_ATOMIC_DETAIL_HEADER(prefix) <BOOST_JOIN(prefix, BOOST_ATOMIC_DETAIL_PLATFORM).hpp>
 120
 121 #endif // BOOST_ATOMIC_DETAIL_PLATFORM_HPP_INCLUDED_