1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_BASE_BUILD_CONFIG_H_ 6 #define V8_BASE_BUILD_CONFIG_H_ 7 8 #include "include/v8config.h" 9 10 // Processor architecture detection. For more info on what's defined, see: 11 // http://msdn.microsoft.com/en-us/library/b0084kay.aspx 12 // http://www.agner.org/optimize/calling_conventions.pdf 13 // or with gcc, run: "echo | gcc -E -dM -" 14 #if defined(_M_X64) || defined(__x86_64__) 15 #define V8_HOST_ARCH_X64 1 16 #if defined(__x86_64__) && __SIZEOF_POINTER__ == 4 // Check for x32. 17 #define V8_HOST_ARCH_32_BIT 1 18 #else 19 #define V8_HOST_ARCH_64_BIT 1 20 #endif 21 #elif defined(_M_IX86) || defined(__i386__) 22 #define V8_HOST_ARCH_IA32 1 23 #define V8_HOST_ARCH_32_BIT 1 24 #elif defined(__AARCH64EL__) 25 #define V8_HOST_ARCH_ARM64 1 26 #define V8_HOST_ARCH_64_BIT 1 27 #elif defined(__ARMEL__) 28 #define V8_HOST_ARCH_ARM 1 29 #define V8_HOST_ARCH_32_BIT 1 30 #elif defined(__mips64) 31 #define V8_HOST_ARCH_MIPS64 1 32 #define V8_HOST_ARCH_64_BIT 1 33 #elif defined(__MIPSEB__) || defined(__MIPSEL__) 34 #define V8_HOST_ARCH_MIPS 1 35 #define V8_HOST_ARCH_32_BIT 1 36 #elif defined(__PPC__) || defined(_ARCH_PPC) 37 #define V8_HOST_ARCH_PPC 1 38 #if defined(__PPC64__) || defined(_ARCH_PPC64) 39 #define V8_HOST_ARCH_64_BIT 1 40 #else 41 #define V8_HOST_ARCH_32_BIT 1 42 #endif 43 #elif defined(__s390__) || defined(__s390x__) 44 #define V8_HOST_ARCH_S390 1 45 #if defined(__s390x__) 46 #define V8_HOST_ARCH_64_BIT 1 47 #else 48 #define V8_HOST_ARCH_32_BIT 1 49 #endif 50 #else 51 #error "Host architecture was not detected as supported by v8" 52 #endif 53 54 #if defined(__ARM_ARCH_7A__) || \ 55 defined(__ARM_ARCH_7R__) || \ 56 defined(__ARM_ARCH_7__) 57 # define CAN_USE_ARMV7_INSTRUCTIONS 1 58 #ifdef __ARM_ARCH_EXT_IDIV__ 59 #define CAN_USE_SUDIV 1 60 #endif 61 # ifndef CAN_USE_VFP3_INSTRUCTIONS 62 #define CAN_USE_VFP3_INSTRUCTIONS 1 63 # endif 64 #endif 65 66 #if defined(__ARM_ARCH_8A__) 67 #define CAN_USE_ARMV7_INSTRUCTIONS 1 68 #define CAN_USE_SUDIV 1 69 # define CAN_USE_ARMV8_INSTRUCTIONS 1 70 #ifndef CAN_USE_VFP3_INSTRUCTIONS 71 #define CAN_USE_VFP3_INSTRUCTIONS 1 72 #endif 73 #endif 74 75 76 // Target architecture detection. This may be set externally. If not, detect 77 // in the same way as the host architecture, that is, target the native 78 // environment as presented by the compiler. 79 #if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM && \ 80 !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_MIPS && !V8_TARGET_ARCH_MIPS64 && \ 81 !V8_TARGET_ARCH_PPC && !V8_TARGET_ARCH_S390 82 #if defined(_M_X64) || defined(__x86_64__) 83 #define V8_TARGET_ARCH_X64 1 84 #elif defined(_M_IX86) || defined(__i386__) 85 #define V8_TARGET_ARCH_IA32 1 86 #elif defined(__AARCH64EL__) 87 #define V8_TARGET_ARCH_ARM64 1 88 #elif defined(__ARMEL__) 89 #define V8_TARGET_ARCH_ARM 1 90 #elif defined(__mips64) 91 #define V8_TARGET_ARCH_MIPS64 1 92 #elif defined(__MIPSEB__) || defined(__MIPSEL__) 93 #define V8_TARGET_ARCH_MIPS 1 94 #elif defined(_ARCH_PPC) 95 #define V8_TARGET_ARCH_PPC 1 96 #else 97 #error Target architecture was not detected as supported by v8 98 #endif 99 #endif 100 101 // Determine architecture pointer size. 102 #if V8_TARGET_ARCH_IA32 103 #define V8_TARGET_ARCH_32_BIT 1 104 #elif V8_TARGET_ARCH_X64 105 #if !V8_TARGET_ARCH_32_BIT && !V8_TARGET_ARCH_64_BIT 106 #if defined(__x86_64__) && __SIZEOF_POINTER__ == 4 // Check for x32. 107 #define V8_TARGET_ARCH_32_BIT 1 108 #else 109 #define V8_TARGET_ARCH_64_BIT 1 110 #endif 111 #endif 112 #elif V8_TARGET_ARCH_ARM 113 #define V8_TARGET_ARCH_32_BIT 1 114 #elif V8_TARGET_ARCH_ARM64 115 #define V8_TARGET_ARCH_64_BIT 1 116 #elif V8_TARGET_ARCH_MIPS 117 #define V8_TARGET_ARCH_32_BIT 1 118 #elif V8_TARGET_ARCH_MIPS64 119 #define V8_TARGET_ARCH_64_BIT 1 120 #elif V8_TARGET_ARCH_PPC 121 #if V8_TARGET_ARCH_PPC64 122 #define V8_TARGET_ARCH_64_BIT 1 123 #else 124 #define V8_TARGET_ARCH_32_BIT 1 125 #endif 126 #elif V8_TARGET_ARCH_S390 127 #if V8_TARGET_ARCH_S390X 128 #define V8_TARGET_ARCH_64_BIT 1 129 #else 130 #define V8_TARGET_ARCH_32_BIT 1 131 #endif 132 #else 133 #error Unknown target architecture pointer size 134 #endif 135 136 // Check for supported combinations of host and target architectures. 137 #if V8_TARGET_ARCH_IA32 && !V8_HOST_ARCH_IA32 138 #error Target architecture ia32 is only supported on ia32 host 139 #endif 140 #if (V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_64_BIT && \ 141 !(V8_HOST_ARCH_X64 && V8_HOST_ARCH_64_BIT)) 142 #error Target architecture x64 is only supported on x64 host 143 #endif 144 #if (V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_32_BIT && \ 145 !(V8_HOST_ARCH_X64 && V8_HOST_ARCH_32_BIT)) 146 #error Target architecture x32 is only supported on x64 host with x32 support 147 #endif 148 #if (V8_TARGET_ARCH_ARM && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_ARM)) 149 #error Target architecture arm is only supported on arm and ia32 host 150 #endif 151 #if (V8_TARGET_ARCH_ARM64 && !(V8_HOST_ARCH_X64 || V8_HOST_ARCH_ARM64)) 152 #error Target architecture arm64 is only supported on arm64 and x64 host 153 #endif 154 #if (V8_TARGET_ARCH_MIPS && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_MIPS)) 155 #error Target architecture mips is only supported on mips and ia32 host 156 #endif 157 #if (V8_TARGET_ARCH_MIPS64 && !(V8_HOST_ARCH_X64 || V8_HOST_ARCH_MIPS64)) 158 #error Target architecture mips64 is only supported on mips64 and x64 host 159 #endif 160 161 // Determine architecture endianness. 162 #if V8_TARGET_ARCH_IA32 163 #define V8_TARGET_LITTLE_ENDIAN 1 164 #elif V8_TARGET_ARCH_X64 165 #define V8_TARGET_LITTLE_ENDIAN 1 166 #elif V8_TARGET_ARCH_ARM 167 #define V8_TARGET_LITTLE_ENDIAN 1 168 #elif V8_TARGET_ARCH_ARM64 169 #define V8_TARGET_LITTLE_ENDIAN 1 170 #elif V8_TARGET_ARCH_MIPS 171 #if defined(__MIPSEB__) 172 #define V8_TARGET_BIG_ENDIAN 1 173 #else 174 #define V8_TARGET_LITTLE_ENDIAN 1 175 #endif 176 #elif V8_TARGET_ARCH_MIPS64 177 #if defined(__MIPSEB__) || defined(V8_TARGET_ARCH_MIPS64_BE) 178 #define V8_TARGET_BIG_ENDIAN 1 179 #else 180 #define V8_TARGET_LITTLE_ENDIAN 1 181 #endif 182 #elif __BIG_ENDIAN__ // FOR PPCGR on AIX 183 #define V8_TARGET_BIG_ENDIAN 1 184 #elif V8_TARGET_ARCH_PPC_LE 185 #define V8_TARGET_LITTLE_ENDIAN 1 186 #elif V8_TARGET_ARCH_PPC_BE 187 #define V8_TARGET_BIG_ENDIAN 1 188 #elif V8_TARGET_ARCH_S390 189 #if V8_TARGET_ARCH_S390_LE_SIM 190 #define V8_TARGET_LITTLE_ENDIAN 1 191 #else 192 #define V8_TARGET_BIG_ENDIAN 1 193 #endif 194 #else 195 #error Unknown target architecture endianness 196 #endif 197 198 #if defined(V8_TARGET_ARCH_IA32) || defined(V8_TARGET_ARCH_X64) 199 #define V8_TARGET_ARCH_STORES_RETURN_ADDRESS_ON_STACK 1 200 #else 201 #define V8_TARGET_ARCH_STORES_RETURN_ADDRESS_ON_STACK 0 202 #endif 203 204 // Number of bits to represent the page size for paged spaces. The value of 19 205 // gives 512Kb bytes per page. 206 const int kPageSizeBits = 19; 207 208 #endif // V8_BASE_BUILD_CONFIG_H_ 209