1 // Copyright 2015, ARM Limited 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are met: 6 // 7 // * Redistributions of source code must retain the above copyright notice, 8 // this list of conditions and the following disclaimer. 9 // * Redistributions in binary form must reproduce the above copyright notice, 10 // this list of conditions and the following disclaimer in the documentation 11 // and/or other materials provided with the distribution. 12 // * Neither the name of ARM Limited nor the names of its contributors may be 13 // used to endorse or promote products derived from this software without 14 // specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND 17 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 20 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 23 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 27 #ifndef VIXL_GLOBALS_H 28 #define VIXL_GLOBALS_H 29 30 // Get standard C99 macros for integer types. 31 #ifndef __STDC_CONSTANT_MACROS 32 #define __STDC_CONSTANT_MACROS 33 #endif 34 35 #ifndef __STDC_LIMIT_MACROS 36 #define __STDC_LIMIT_MACROS 37 #endif 38 39 #ifndef __STDC_FORMAT_MACROS 40 #define __STDC_FORMAT_MACROS 41 #endif 42 43 #include <stdint.h> 44 #include <inttypes.h> 45 46 #include <assert.h> 47 #include <stdarg.h> 48 #include <stdio.h> 49 #include <stdint.h> 50 #include <stdlib.h> 51 #include <stddef.h> 52 #include "vixl/platform.h" 53 54 55 typedef uint8_t byte; 56 57 // Type for half-precision (16 bit) floating point numbers. 58 typedef uint16_t float16; 59 60 const int KBytes = 1024; 61 const int MBytes = 1024 * KBytes; 62 63 #define VIXL_ABORT() \ 64 do { printf("in %s, line %i", __FILE__, __LINE__); abort(); } while (false) 65 #ifdef VIXL_DEBUG 66 #define VIXL_ASSERT(condition) assert(condition) 67 #define VIXL_CHECK(condition) VIXL_ASSERT(condition) 68 #define VIXL_UNIMPLEMENTED() \ 69 do { fprintf(stderr, "UNIMPLEMENTED\t"); VIXL_ABORT(); } while (false) 70 #define VIXL_UNREACHABLE() \ 71 do { fprintf(stderr, "UNREACHABLE\t"); VIXL_ABORT(); } while (false) 72 #else 73 #define VIXL_ASSERT(condition) ((void) 0) 74 #define VIXL_CHECK(condition) assert(condition) 75 #define VIXL_UNIMPLEMENTED() ((void) 0) 76 #define VIXL_UNREACHABLE() ((void) 0) 77 #endif 78 // This is not as powerful as template based assertions, but it is simple. 79 // It assumes that the descriptions are unique. If this starts being a problem, 80 // we can switch to a different implemention. 81 #define VIXL_CONCAT(a, b) a##b 82 #define VIXL_STATIC_ASSERT_LINE(line, condition) \ 83 typedef char VIXL_CONCAT(STATIC_ASSERT_LINE_, line)[(condition) ? 1 : -1] \ 84 __attribute__((unused)) 85 #define VIXL_STATIC_ASSERT(condition) \ 86 VIXL_STATIC_ASSERT_LINE(__LINE__, condition) 87 88 template <typename T1> 89 inline void USE(T1) {} 90 91 template <typename T1, typename T2> 92 inline void USE(T1, T2) {} 93 94 template <typename T1, typename T2, typename T3> 95 inline void USE(T1, T2, T3) {} 96 97 template <typename T1, typename T2, typename T3, typename T4> 98 inline void USE(T1, T2, T3, T4) {} 99 100 #define VIXL_ALIGNMENT_EXCEPTION() \ 101 do { fprintf(stderr, "ALIGNMENT EXCEPTION\t"); VIXL_ABORT(); } while (0) 102 103 // The clang::fallthrough attribute is used along with the Wimplicit-fallthrough 104 // argument to annotate intentional fall-through between switch labels. 105 // For more information please refer to: 106 // http://clang.llvm.org/docs/AttributeReference.html#fallthrough-clang-fallthrough 107 #ifndef __has_warning 108 #define __has_warning(x) 0 109 #endif 110 111 // Note: This option is only available for Clang. And will only be enabled for 112 // C++11(201103L). 113 #if __has_warning("-Wimplicit-fallthrough") && __cplusplus >= 201103L 114 #define VIXL_FALLTHROUGH() [[clang::fallthrough]] //NOLINT 115 #else 116 #define VIXL_FALLTHROUGH() do {} while (0) 117 #endif 118 119 #if __cplusplus >= 201103L 120 #define VIXL_NO_RETURN [[noreturn]] //NOLINT 121 #else 122 #define VIXL_NO_RETURN __attribute__((noreturn)) 123 #endif 124 125 // Some functions might only be marked as "noreturn" for the DEBUG build. This 126 // macro should be used for such cases (for more details see what 127 // VIXL_UNREACHABLE expands to). 128 #ifdef VIXL_DEBUG 129 #define VIXL_DEBUG_NO_RETURN VIXL_NO_RETURN 130 #else 131 #define VIXL_DEBUG_NO_RETURN 132 #endif 133 134 #ifdef VIXL_INCLUDE_SIMULATOR 135 #ifndef VIXL_GENERATE_SIMULATOR_INSTRUCTIONS_VALUE 136 #define VIXL_GENERATE_SIMULATOR_INSTRUCTIONS_VALUE 1 137 #endif 138 #else 139 #ifndef VIXL_GENERATE_SIMULATOR_INSTRUCTIONS_VALUE 140 #define VIXL_GENERATE_SIMULATOR_INSTRUCTIONS_VALUE 0 141 #endif 142 #if VIXL_GENERATE_SIMULATOR_INSTRUCTIONS_VALUE 143 #warning "Generating Simulator instructions without Simulator support." 144 #endif 145 #endif 146 147 #ifdef USE_SIMULATOR 148 #error "Please see the release notes for USE_SIMULATOR." 149 #endif 150 151 #endif // VIXL_GLOBALS_H 152
