| // 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__) |
| #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 |
| #elif defined(_M_IX86) || defined(__i386__) |
| #define V8_HOST_ARCH_IA32 1 |
| #define V8_HOST_ARCH_32_BIT 1 |
| #elif defined(__AARCH64EL__) || defined(_M_ARM64) |
| #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 |
| #elif defined(__PPC64__) || defined(_ARCH_PPC64) |
| #define V8_HOST_ARCH_PPC64 1 |
| #define V8_HOST_ARCH_64_BIT 1 |
| #elif defined(__PPC__) || defined(_ARCH_PPC) |
| #define V8_HOST_ARCH_PPC 1 |
| #define V8_HOST_ARCH_32_BIT 1 |
| #elif defined(__s390__) || defined(__s390x__) |
| #define V8_HOST_ARCH_S390 1 |
| #if defined(__s390x__) |
| #define V8_HOST_ARCH_64_BIT 1 |
| #else |
| #define V8_HOST_ARCH_32_BIT 1 |
| #endif |
| #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 |
| #ifdef __ARM_ARCH_EXT_IDIV__ |
| #define CAN_USE_SUDIV 1 |
| #endif |
| # ifndef CAN_USE_VFP3_INSTRUCTIONS |
| #define CAN_USE_VFP3_INSTRUCTIONS 1 |
| # endif |
| #endif |
| |
| #if defined(__ARM_ARCH_8A__) |
| #define CAN_USE_ARMV7_INSTRUCTIONS 1 |
| #define CAN_USE_SUDIV 1 |
| # define CAN_USE_ARMV8_INSTRUCTIONS 1 |
| #ifndef CAN_USE_VFP3_INSTRUCTIONS |
| #define CAN_USE_VFP3_INSTRUCTIONS 1 |
| #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_ARM && \ |
| !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_MIPS && !V8_TARGET_ARCH_MIPS64 && \ |
| !V8_TARGET_ARCH_PPC && !V8_TARGET_ARCH_PPC64 && !V8_TARGET_ARCH_S390 |
| #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__) || defined(_M_ARM64) |
| #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 |
| #elif defined(_ARCH_PPC64) |
| #define V8_TARGET_ARCH_PPC64 1 |
| #elif defined(_ARCH_PPC) |
| #define V8_TARGET_ARCH_PPC 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_PPC |
| #define V8_TARGET_ARCH_32_BIT 1 |
| #elif V8_TARGET_ARCH_PPC64 |
| #define V8_TARGET_ARCH_64_BIT 1 |
| #elif V8_TARGET_ARCH_S390 |
| #if V8_TARGET_ARCH_S390X |
| #define V8_TARGET_ARCH_64_BIT 1 |
| #else |
| #define V8_TARGET_ARCH_32_BIT 1 |
| #endif |
| #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 |
| #if defined(__MIPSEB__) || defined(V8_TARGET_ARCH_MIPS64_BE) |
| #define V8_TARGET_BIG_ENDIAN 1 |
| #else |
| #define V8_TARGET_LITTLE_ENDIAN 1 |
| #endif |
| #elif __BIG_ENDIAN__ // FOR PPCGR on AIX |
| #define V8_TARGET_BIG_ENDIAN 1 |
| #elif V8_TARGET_ARCH_PPC_LE |
| #define V8_TARGET_LITTLE_ENDIAN 1 |
| #elif V8_TARGET_ARCH_PPC_BE |
| #define V8_TARGET_BIG_ENDIAN 1 |
| #elif V8_TARGET_ARCH_S390 |
| #if V8_TARGET_ARCH_S390_LE_SIM |
| #define V8_TARGET_LITTLE_ENDIAN 1 |
| #else |
| #define V8_TARGET_BIG_ENDIAN 1 |
| #endif |
| #else |
| #error Unknown target architecture endianness |
| #endif |
| |
| #if defined(V8_TARGET_ARCH_IA32) || defined(V8_TARGET_ARCH_X64) |
| #define V8_TARGET_ARCH_STORES_RETURN_ADDRESS_ON_STACK true |
| #else |
| #define V8_TARGET_ARCH_STORES_RETURN_ADDRESS_ON_STACK false |
| #endif |
| constexpr int kReturnAddressStackSlotCount = |
| V8_TARGET_ARCH_STORES_RETURN_ADDRESS_ON_STACK ? 1 : 0; |
| |
| // Number of bits to represent the page size for paged spaces. |
| #if defined(V8_TARGET_ARCH_PPC) || defined(V8_TARGET_ARCH_PPC64) |
| // PPC has large (64KB) physical pages. |
| const int kPageSizeBits = 19; |
| #else |
| // Arm64 supports up to 64k OS pages on Linux, however 4k pages are more common |
| // so we keep the V8 page size at 256k. Nonetheless, we need to make sure we |
| // don't decrease it further in the future due to reserving 3 OS pages for every |
| // executable V8 page. |
| const int kPageSizeBits = 18; |
| #endif |
| |
| #endif // V8_BASE_BUILD_CONFIG_H_ |
