| // Copyright 2014 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_BASE_BUILD_CONFIG_H_ |
| #define V8_BASE_BUILD_CONFIG_H_ |
| |
| #include "include/v8config.h" |
| |
| // Processor architecture detection. For more info on what's defined, see: |
| // http://msdn.microsoft.com/en-us/library/b0084kay.aspx |
| // http://www.agner.org/optimize/calling_conventions.pdf |
| // or with gcc, run: "echo | gcc -E -dM -" |
| #if defined(_M_X64) || defined(__x86_64__) |
| #if defined(__native_client__) |
| // For Native Client builds of V8, use V8_TARGET_ARCH_ARM, so that V8 |
| // generates ARM machine code, together with a portable ARM simulator |
| // compiled for the host architecture in question. |
| // |
| // Since Native Client is ILP-32 on all architectures we use |
| // V8_HOST_ARCH_IA32 on both 32- and 64-bit x86. |
| #define V8_HOST_ARCH_IA32 1 |
| #define V8_HOST_ARCH_32_BIT 1 |
| #else |
| #define V8_HOST_ARCH_X64 1 |
| #if defined(__x86_64__) && __SIZEOF_POINTER__ == 4 // Check for x32. |
| #define V8_HOST_ARCH_32_BIT 1 |
| #else |
| #define V8_HOST_ARCH_64_BIT 1 |
| #endif |
| #endif // __native_client__ |
| #elif defined(__pnacl__) |
| // PNaCl is also ILP-32. |
| #define V8_HOST_ARCH_IA32 1 |
| #define V8_HOST_ARCH_32_BIT 1 |
| #elif defined(_M_IX86) || defined(__i386__) |
| #define V8_HOST_ARCH_IA32 1 |
| #define V8_HOST_ARCH_32_BIT 1 |
| #elif defined(__AARCH64EL__) |
| #define V8_HOST_ARCH_ARM64 1 |
| #define V8_HOST_ARCH_64_BIT 1 |
| #elif defined(__ARMEL__) |
| #define V8_HOST_ARCH_ARM 1 |
| #define V8_HOST_ARCH_32_BIT 1 |
| #elif defined(__mips64) |
| #define V8_HOST_ARCH_MIPS64 1 |
| #define V8_HOST_ARCH_64_BIT 1 |
| #elif defined(__MIPSEB__) || defined(__MIPSEL__) |
| #define V8_HOST_ARCH_MIPS 1 |
| #define V8_HOST_ARCH_32_BIT 1 |
| #else |
| #error "Host architecture was not detected as supported by v8" |
| #endif |
| |
| #if defined(__ARM_ARCH_7A__) || \ |
| defined(__ARM_ARCH_7R__) || \ |
| defined(__ARM_ARCH_7__) |
| # define CAN_USE_ARMV7_INSTRUCTIONS 1 |
| # ifndef CAN_USE_VFP3_INSTRUCTIONS |
| # define CAN_USE_VFP3_INSTRUCTIONS |
| # endif |
| #endif |
| |
| |
| // Target architecture detection. This may be set externally. If not, detect |
| // in the same way as the host architecture, that is, target the native |
| // environment as presented by the compiler. |
| #if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_X87 && \ |
| !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_MIPS && \ |
| !V8_TARGET_ARCH_MIPS64 |
| #if defined(_M_X64) || defined(__x86_64__) |
| #define V8_TARGET_ARCH_X64 1 |
| #elif defined(_M_IX86) || defined(__i386__) |
| #define V8_TARGET_ARCH_IA32 1 |
| #elif defined(__AARCH64EL__) |
| #define V8_TARGET_ARCH_ARM64 1 |
| #elif defined(__ARMEL__) |
| #define V8_TARGET_ARCH_ARM 1 |
| #elif defined(__mips64) |
| #define V8_TARGET_ARCH_MIPS64 1 |
| #elif defined(__MIPSEB__) || defined(__MIPSEL__) |
| #define V8_TARGET_ARCH_MIPS 1 |
| #else |
| #error Target architecture was not detected as supported by v8 |
| #endif |
| #endif |
| |
| // Determine architecture pointer size. |
| #if V8_TARGET_ARCH_IA32 |
| #define V8_TARGET_ARCH_32_BIT 1 |
| #elif V8_TARGET_ARCH_X64 |
| #if !V8_TARGET_ARCH_32_BIT && !V8_TARGET_ARCH_64_BIT |
| #if defined(__x86_64__) && __SIZEOF_POINTER__ == 4 // Check for x32. |
| #define V8_TARGET_ARCH_32_BIT 1 |
| #else |
| #define V8_TARGET_ARCH_64_BIT 1 |
| #endif |
| #endif |
| #elif V8_TARGET_ARCH_ARM |
| #define V8_TARGET_ARCH_32_BIT 1 |
| #elif V8_TARGET_ARCH_ARM64 |
| #define V8_TARGET_ARCH_64_BIT 1 |
| #elif V8_TARGET_ARCH_MIPS |
| #define V8_TARGET_ARCH_32_BIT 1 |
| #elif V8_TARGET_ARCH_MIPS64 |
| #define V8_TARGET_ARCH_64_BIT 1 |
| #elif V8_TARGET_ARCH_X87 |
| #define V8_TARGET_ARCH_32_BIT 1 |
| #else |
| #error Unknown target architecture pointer size |
| #endif |
| |
| // Check for supported combinations of host and target architectures. |
| #if V8_TARGET_ARCH_IA32 && !V8_HOST_ARCH_IA32 |
| #error Target architecture ia32 is only supported on ia32 host |
| #endif |
| #if (V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_64_BIT && \ |
| !(V8_HOST_ARCH_X64 && V8_HOST_ARCH_64_BIT)) |
| #error Target architecture x64 is only supported on x64 host |
| #endif |
| #if (V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_32_BIT && \ |
| !(V8_HOST_ARCH_X64 && V8_HOST_ARCH_32_BIT)) |
| #error Target architecture x32 is only supported on x64 host with x32 support |
| #endif |
| #if (V8_TARGET_ARCH_ARM && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_ARM)) |
| #error Target architecture arm is only supported on arm and ia32 host |
| #endif |
| #if (V8_TARGET_ARCH_ARM64 && !(V8_HOST_ARCH_X64 || V8_HOST_ARCH_ARM64)) |
| #error Target architecture arm64 is only supported on arm64 and x64 host |
| #endif |
| #if (V8_TARGET_ARCH_MIPS && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_MIPS)) |
| #error Target architecture mips is only supported on mips and ia32 host |
| #endif |
| #if (V8_TARGET_ARCH_MIPS64 && !(V8_HOST_ARCH_X64 || V8_HOST_ARCH_MIPS64)) |
| #error Target architecture mips64 is only supported on mips64 and x64 host |
| #endif |
| |
| // Determine architecture endianness. |
| #if V8_TARGET_ARCH_IA32 |
| #define V8_TARGET_LITTLE_ENDIAN 1 |
| #elif V8_TARGET_ARCH_X64 |
| #define V8_TARGET_LITTLE_ENDIAN 1 |
| #elif V8_TARGET_ARCH_ARM |
| #define V8_TARGET_LITTLE_ENDIAN 1 |
| #elif V8_TARGET_ARCH_ARM64 |
| #define V8_TARGET_LITTLE_ENDIAN 1 |
| #elif V8_TARGET_ARCH_MIPS |
| #if defined(__MIPSEB__) |
| #define V8_TARGET_BIG_ENDIAN 1 |
| #else |
| #define V8_TARGET_LITTLE_ENDIAN 1 |
| #endif |
| #elif V8_TARGET_ARCH_MIPS64 |
| #define V8_TARGET_LITTLE_ENDIAN 1 |
| #elif V8_TARGET_ARCH_X87 |
| #define V8_TARGET_LITTLE_ENDIAN 1 |
| #else |
| #error Unknown target architecture endianness |
| #endif |
| |
| // Number of bits to represent the page size for paged spaces. The value of 20 |
| // gives 1Mb bytes per page. |
| const int kPageSizeBits = 20; |
| |
| #endif // V8_BASE_BUILD_CONFIG_H_ |