1 2 // Copyright Oliver Kowalke 2014. 3 // Distributed under the Boost Software License, Version 1.0. 4 // (See accompanying file LICENSE_1_0.txt or copy at 5 // http://www.boost.org/LICENSE_1_0.txt) 6 7 #ifndef BOOST_CONTEXT_DETAIL_CONFIG_H 8 #define BOOST_CONTEXT_DETAIL_CONFIG_H 9 10 // required for SD-6 compile-time integer sequences 11 #include <utility> 12 13 #include <boost/config.hpp> 14 #include <boost/detail/workaround.hpp> 15 16 #ifdef BOOST_CONTEXT_DECL 17 # undef BOOST_CONTEXT_DECL 18 #endif 19 20 #if (defined(BOOST_ALL_DYN_LINK) || defined(BOOST_CONTEXT_DYN_LINK) ) && ! defined(BOOST_CONTEXT_STATIC_LINK) 21 # if defined(BOOST_CONTEXT_SOURCE) 22 # define BOOST_CONTEXT_DECL BOOST_SYMBOL_EXPORT 23 # define BOOST_CONTEXT_BUILD_DLL 24 # else 25 # define BOOST_CONTEXT_DECL BOOST_SYMBOL_IMPORT 26 # endif 27 #endif 28 29 #if ! defined(BOOST_CONTEXT_DECL) 30 # define BOOST_CONTEXT_DECL 31 #endif 32 33 #if ! defined(BOOST_CONTEXT_SOURCE) && ! defined(BOOST_ALL_NO_LIB) && ! defined(BOOST_CONTEXT_NO_LIB) 34 # define BOOST_LIB_NAME boost_context 35 # if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_CONTEXT_DYN_LINK) 36 # define BOOST_DYN_LINK 37 # endif 38 # include <boost/config/auto_link.hpp> 39 #endif 40 41 #undef BOOST_CONTEXT_CALLDECL 42 #if (defined(i386) || defined(__i386__) || defined(__i386) \ 43 || defined(__i486__) || defined(__i586__) || defined(__i686__) \ 44 || defined(__X86__) || defined(_X86_) || defined(__THW_INTEL__) \ 45 || defined(__I86__) || defined(__INTEL__) || defined(__IA32__) \ 46 || defined(_M_IX86) || defined(_I86_)) && defined(BOOST_WINDOWS) 47 # define BOOST_CONTEXT_CALLDECL __cdecl 48 #else 49 # define BOOST_CONTEXT_CALLDECL 50 #endif 51 52 #if defined(BOOST_USE_SEGMENTED_STACKS) 53 # if ! ( (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) ) ) || \ 54 (defined(__clang__) && (__clang_major__ > 2 || ( __clang_major__ == 2 && __clang_minor__ > 3) ) ) ) 55 # error "compiler does not support segmented_stack stacks" 56 # endif 57 # define BOOST_CONTEXT_SEGMENTS 10 58 #endif 59 60 61 #define BOOST_CONTEXT_NO_CXX14_INTEGER_SEQUENCE 62 // use rd6 macros for std::integer_sequence 63 #if defined(__cpp_lib_integer_sequence) && __cpp_lib_integer_sequence >= 201304 64 # undef BOOST_CONTEXT_NO_CXX14_INTEGER_SEQUENCE 65 #endif 66 // workaroud: MSVC 14 does not provide macros to test for compile-time integer sequence 67 #if _MSC_VER > 1800 // _MSC_VER == 1800 -> MS Visual Studio 2013 68 # undef BOOST_CONTEXT_NO_INDEX_SEQUENCE 69 #endif 70 // workaround: Xcode clang feature detection 71 #if ! defined(__cpp_lib_integer_sequence) && __cpp_lib_integer_sequence >= 201304 72 # if _LIBCPP_STD_VER > 11 73 # undef BOOST_CONTEXT_NO_CXX14_INTEGER_SEQUENCE 74 # endif 75 #endif 76 77 // workaroud: MSVC 14 does support constexpr 78 #if _MSC_VER > 1800 // _MSC_VER == 1800 -> MS Visual Studio 2013 79 # undef BOOST_NO_CXX11_CONSTEXPR 80 #endif 81 82 #undef BOOST_CONTEXT_NO_CXX11 83 #if defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) || \ 84 defined(BOOST_NO_CXX11_CONSTEXPR) || \ 85 defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || \ 86 defined(BOOST_NO_CXX11_FINAL) || \ 87 defined(BOOST_NO_CXX11_HDR_TUPLE) || \ 88 defined(BOOST_NO_CXX11_NOEXCEPT) || \ 89 defined(BOOST_NO_CXX11_NULLPTR) || \ 90 defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || \ 91 defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) || \ 92 defined(BOOST_NO_CXX11_UNIFIED_INITIALISATION_SYNTAX) || \ 93 defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || \ 94 defined(BOOST_NO_HDR_ATOMIC) || \ 95 defined(BOOST_NO_HDR_TUPLE) 96 # define BOOST_CONTEXT_NO_CXX11 97 #endif 98 99 #if ! defined(BOOST_EXECUTION_CONTEXT) 100 # if defined(BOOST_USE_SEGMENTED_STACKS) 101 # define BOOST_EXECUTION_CONTEXT 1 102 # else 103 # define BOOST_EXECUTION_CONTEXT 2 104 # endif 105 #endif 106 107 #if ! defined(BOOST_NO_CXX11_CONSTEXPR) 108 // modern architectures have cachelines with 64byte length 109 // ARM Cortex-A15 32/64byte, Cortex-A9 16/32/64bytes 110 // MIPS 74K: 32byte, 4KEc: 16byte 111 // ist should be safe to use 64byte for all 112 static constexpr std::size_t cache_alignment{ 64 }; 113 static constexpr std::size_t cacheline_length{ 64 }; 114 // lookahead size for prefetching 115 static constexpr std::size_t prefetch_stride{ 4 * cacheline_length }; 116 #endif 117 118 #if defined(__GLIBCPP__) || defined(__GLIBCXX__) 119 // GNU libstdc++ 3 120 # define BOOST_CONTEXT_HAS_CXXABI_H 121 #endif 122 123 #if defined( BOOST_CONTEXT_HAS_CXXABI_H ) 124 # include <cxxabi.h> 125 #endif 126 127 #if defined(__OpenBSD__) 128 // stacks need mmap(2) with MAP_STACK 129 # define BOOST_CONTEXT_USE_MAP_STACK 130 #endif 131 132 #endif // BOOST_CONTEXT_DETAIL_CONFIG_H 133