// 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 // 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 const int kPageSizeBits = 18; #endif #endif // V8_BASE_BUILD_CONFIG_H_