Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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 | #if defined(__native_client__) |
| 16 | // For Native Client builds of V8, use V8_TARGET_ARCH_ARM, so that V8 |
| 17 | // generates ARM machine code, together with a portable ARM simulator |
| 18 | // compiled for the host architecture in question. |
| 19 | // |
| 20 | // Since Native Client is ILP-32 on all architectures we use |
| 21 | // V8_HOST_ARCH_IA32 on both 32- and 64-bit x86. |
| 22 | #define V8_HOST_ARCH_IA32 1 |
| 23 | #define V8_HOST_ARCH_32_BIT 1 |
| 24 | #else |
| 25 | #define V8_HOST_ARCH_X64 1 |
| 26 | #if defined(__x86_64__) && __SIZEOF_POINTER__ == 4 // Check for x32. |
| 27 | #define V8_HOST_ARCH_32_BIT 1 |
| 28 | #else |
| 29 | #define V8_HOST_ARCH_64_BIT 1 |
| 30 | #endif |
| 31 | #endif // __native_client__ |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 32 | #elif defined(__pnacl__) |
| 33 | // PNaCl is also ILP-32. |
| 34 | #define V8_HOST_ARCH_IA32 1 |
| 35 | #define V8_HOST_ARCH_32_BIT 1 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 36 | #elif defined(_M_IX86) || defined(__i386__) |
| 37 | #define V8_HOST_ARCH_IA32 1 |
| 38 | #define V8_HOST_ARCH_32_BIT 1 |
| 39 | #elif defined(__AARCH64EL__) |
| 40 | #define V8_HOST_ARCH_ARM64 1 |
| 41 | #define V8_HOST_ARCH_64_BIT 1 |
| 42 | #elif defined(__ARMEL__) |
| 43 | #define V8_HOST_ARCH_ARM 1 |
| 44 | #define V8_HOST_ARCH_32_BIT 1 |
| 45 | #elif defined(__mips64) |
| 46 | #define V8_HOST_ARCH_MIPS64 1 |
| 47 | #define V8_HOST_ARCH_64_BIT 1 |
| 48 | #elif defined(__MIPSEB__) || defined(__MIPSEL__) |
| 49 | #define V8_HOST_ARCH_MIPS 1 |
| 50 | #define V8_HOST_ARCH_32_BIT 1 |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 51 | #elif defined(__PPC__) || defined(_ARCH_PPC) |
| 52 | #define V8_HOST_ARCH_PPC 1 |
| 53 | #if defined(__PPC64__) || defined(_ARCH_PPC64) |
| 54 | #define V8_HOST_ARCH_64_BIT 1 |
| 55 | #else |
| 56 | #define V8_HOST_ARCH_32_BIT 1 |
| 57 | #endif |
| 58 | #elif defined(__s390__) || defined(__s390x__) |
| 59 | #define V8_HOST_ARCH_S390 1 |
| 60 | #if defined(__s390x__) |
| 61 | #define V8_HOST_ARCH_64_BIT 1 |
| 62 | #else |
| 63 | #define V8_HOST_ARCH_32_BIT 1 |
| 64 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 65 | #else |
| 66 | #error "Host architecture was not detected as supported by v8" |
| 67 | #endif |
| 68 | |
| 69 | #if defined(__ARM_ARCH_7A__) || \ |
| 70 | defined(__ARM_ARCH_7R__) || \ |
| 71 | defined(__ARM_ARCH_7__) |
| 72 | # define CAN_USE_ARMV7_INSTRUCTIONS 1 |
| 73 | # ifndef CAN_USE_VFP3_INSTRUCTIONS |
| 74 | # define CAN_USE_VFP3_INSTRUCTIONS |
| 75 | # endif |
| 76 | #endif |
| 77 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 78 | #if defined(__ARM_ARCH_8A__) |
| 79 | # define CAN_USE_ARMV8_INSTRUCTIONS 1 |
| 80 | #endif |
| 81 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 82 | |
| 83 | // Target architecture detection. This may be set externally. If not, detect |
| 84 | // in the same way as the host architecture, that is, target the native |
| 85 | // environment as presented by the compiler. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 86 | #if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_X87 && \ |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 87 | !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_MIPS && \ |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 88 | !V8_TARGET_ARCH_MIPS64 && !V8_TARGET_ARCH_PPC && !V8_TARGET_ARCH_S390 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 89 | #if defined(_M_X64) || defined(__x86_64__) |
| 90 | #define V8_TARGET_ARCH_X64 1 |
| 91 | #elif defined(_M_IX86) || defined(__i386__) |
| 92 | #define V8_TARGET_ARCH_IA32 1 |
| 93 | #elif defined(__AARCH64EL__) |
| 94 | #define V8_TARGET_ARCH_ARM64 1 |
| 95 | #elif defined(__ARMEL__) |
| 96 | #define V8_TARGET_ARCH_ARM 1 |
| 97 | #elif defined(__mips64) |
| 98 | #define V8_TARGET_ARCH_MIPS64 1 |
| 99 | #elif defined(__MIPSEB__) || defined(__MIPSEL__) |
| 100 | #define V8_TARGET_ARCH_MIPS 1 |
| 101 | #else |
| 102 | #error Target architecture was not detected as supported by v8 |
| 103 | #endif |
| 104 | #endif |
| 105 | |
| 106 | // Determine architecture pointer size. |
| 107 | #if V8_TARGET_ARCH_IA32 |
| 108 | #define V8_TARGET_ARCH_32_BIT 1 |
| 109 | #elif V8_TARGET_ARCH_X64 |
| 110 | #if !V8_TARGET_ARCH_32_BIT && !V8_TARGET_ARCH_64_BIT |
| 111 | #if defined(__x86_64__) && __SIZEOF_POINTER__ == 4 // Check for x32. |
| 112 | #define V8_TARGET_ARCH_32_BIT 1 |
| 113 | #else |
| 114 | #define V8_TARGET_ARCH_64_BIT 1 |
| 115 | #endif |
| 116 | #endif |
| 117 | #elif V8_TARGET_ARCH_ARM |
| 118 | #define V8_TARGET_ARCH_32_BIT 1 |
| 119 | #elif V8_TARGET_ARCH_ARM64 |
| 120 | #define V8_TARGET_ARCH_64_BIT 1 |
| 121 | #elif V8_TARGET_ARCH_MIPS |
| 122 | #define V8_TARGET_ARCH_32_BIT 1 |
| 123 | #elif V8_TARGET_ARCH_MIPS64 |
| 124 | #define V8_TARGET_ARCH_64_BIT 1 |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 125 | #elif V8_TARGET_ARCH_PPC |
| 126 | #if V8_TARGET_ARCH_PPC64 |
| 127 | #define V8_TARGET_ARCH_64_BIT 1 |
| 128 | #else |
| 129 | #define V8_TARGET_ARCH_32_BIT 1 |
| 130 | #endif |
| 131 | #elif V8_TARGET_ARCH_S390 |
| 132 | #if V8_TARGET_ARCH_S390X |
| 133 | #define V8_TARGET_ARCH_64_BIT 1 |
| 134 | #else |
| 135 | #define V8_TARGET_ARCH_32_BIT 1 |
| 136 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 137 | #elif V8_TARGET_ARCH_X87 |
| 138 | #define V8_TARGET_ARCH_32_BIT 1 |
| 139 | #else |
| 140 | #error Unknown target architecture pointer size |
| 141 | #endif |
| 142 | |
| 143 | // Check for supported combinations of host and target architectures. |
| 144 | #if V8_TARGET_ARCH_IA32 && !V8_HOST_ARCH_IA32 |
| 145 | #error Target architecture ia32 is only supported on ia32 host |
| 146 | #endif |
| 147 | #if (V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_64_BIT && \ |
| 148 | !(V8_HOST_ARCH_X64 && V8_HOST_ARCH_64_BIT)) |
| 149 | #error Target architecture x64 is only supported on x64 host |
| 150 | #endif |
| 151 | #if (V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_32_BIT && \ |
| 152 | !(V8_HOST_ARCH_X64 && V8_HOST_ARCH_32_BIT)) |
| 153 | #error Target architecture x32 is only supported on x64 host with x32 support |
| 154 | #endif |
| 155 | #if (V8_TARGET_ARCH_ARM && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_ARM)) |
| 156 | #error Target architecture arm is only supported on arm and ia32 host |
| 157 | #endif |
| 158 | #if (V8_TARGET_ARCH_ARM64 && !(V8_HOST_ARCH_X64 || V8_HOST_ARCH_ARM64)) |
| 159 | #error Target architecture arm64 is only supported on arm64 and x64 host |
| 160 | #endif |
| 161 | #if (V8_TARGET_ARCH_MIPS && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_MIPS)) |
| 162 | #error Target architecture mips is only supported on mips and ia32 host |
| 163 | #endif |
| 164 | #if (V8_TARGET_ARCH_MIPS64 && !(V8_HOST_ARCH_X64 || V8_HOST_ARCH_MIPS64)) |
| 165 | #error Target architecture mips64 is only supported on mips64 and x64 host |
| 166 | #endif |
| 167 | |
| 168 | // Determine architecture endianness. |
| 169 | #if V8_TARGET_ARCH_IA32 |
| 170 | #define V8_TARGET_LITTLE_ENDIAN 1 |
| 171 | #elif V8_TARGET_ARCH_X64 |
| 172 | #define V8_TARGET_LITTLE_ENDIAN 1 |
| 173 | #elif V8_TARGET_ARCH_ARM |
| 174 | #define V8_TARGET_LITTLE_ENDIAN 1 |
| 175 | #elif V8_TARGET_ARCH_ARM64 |
| 176 | #define V8_TARGET_LITTLE_ENDIAN 1 |
| 177 | #elif V8_TARGET_ARCH_MIPS |
| 178 | #if defined(__MIPSEB__) |
| 179 | #define V8_TARGET_BIG_ENDIAN 1 |
| 180 | #else |
| 181 | #define V8_TARGET_LITTLE_ENDIAN 1 |
| 182 | #endif |
| 183 | #elif V8_TARGET_ARCH_MIPS64 |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 184 | #if defined(__MIPSEB__) || defined(V8_TARGET_ARCH_MIPS64_BE) |
| 185 | #define V8_TARGET_BIG_ENDIAN 1 |
| 186 | #else |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 187 | #define V8_TARGET_LITTLE_ENDIAN 1 |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 188 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 189 | #elif V8_TARGET_ARCH_X87 |
| 190 | #define V8_TARGET_LITTLE_ENDIAN 1 |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 191 | #elif V8_TARGET_ARCH_PPC_LE |
| 192 | #define V8_TARGET_LITTLE_ENDIAN 1 |
| 193 | #elif V8_TARGET_ARCH_PPC_BE |
| 194 | #define V8_TARGET_BIG_ENDIAN 1 |
| 195 | #elif V8_TARGET_ARCH_S390 |
| 196 | #if V8_TARGET_ARCH_S390_LE_SIM |
| 197 | #define V8_TARGET_LITTLE_ENDIAN 1 |
| 198 | #else |
| 199 | #define V8_TARGET_BIG_ENDIAN 1 |
| 200 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 201 | #else |
| 202 | #error Unknown target architecture endianness |
| 203 | #endif |
| 204 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 205 | #if defined(V8_TARGET_ARCH_IA32) || defined(V8_TARGET_ARCH_X64) || \ |
| 206 | defined(V8_TARGET_ARCH_X87) |
| 207 | #define V8_TARGET_ARCH_STORES_RETURN_ADDRESS_ON_STACK 1 |
| 208 | #else |
| 209 | #define V8_TARGET_ARCH_STORES_RETURN_ADDRESS_ON_STACK 0 |
| 210 | #endif |
| 211 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 212 | // Number of bits to represent the page size for paged spaces. The value of 20 |
| 213 | // gives 1Mb bytes per page. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 214 | #if V8_HOST_ARCH_PPC && V8_TARGET_ARCH_PPC && V8_OS_LINUX |
| 215 | // Bump up for Power Linux due to larger (64K) page size. |
| 216 | const int kPageSizeBits = 22; |
| 217 | #else |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 218 | const int kPageSizeBits = 20; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 219 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 220 | |
| 221 | #endif // V8_BASE_BUILD_CONFIG_H_ |