/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Copyright (C) 2016 Intel Corporation. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtCore module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 3 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL3 included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 3 requirements ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 2.0 or (at your option) the GNU General ** Public license version 3 or any later version approved by the KDE Free ** Qt Foundation. The licenses are as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-2.0.html and ** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef QGLOBAL_H # include #endif #ifndef QPROCESSORDETECTION_H #define QPROCESSORDETECTION_H /* This file uses preprocessor #defines to set various Q_PROCESSOR_* #defines based on the following patterns: Q_PROCESSOR_{FAMILY} Q_PROCESSOR_{FAMILY}_{VARIANT} Q_PROCESSOR_{FAMILY}_{REVISION} The first is always defined. Defines for the various revisions/variants are optional and usually dependent on how the compiler was invoked. Variants that are a superset of another should have a define for the superset. In addition to the procesor family, variants, and revisions, we also set Q_BYTE_ORDER appropriately for the target processor. For bi-endian processors, we try to auto-detect the byte order using the __BIG_ENDIAN__, __LITTLE_ENDIAN__, or __BYTE_ORDER__ preprocessor macros. Note: when adding support for new processors, be sure to update config.tests/arch/arch.cpp to ensure that configure can detect the target and host architectures. */ /* Machine byte-order, reuse preprocessor provided macros when available */ #if defined(__ORDER_BIG_ENDIAN__) # define Q_BIG_ENDIAN __ORDER_BIG_ENDIAN__ #else # define Q_BIG_ENDIAN 4321 #endif #if defined(__ORDER_LITTLE_ENDIAN__) # define Q_LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__ #else # define Q_LITTLE_ENDIAN 1234 #endif /* Alpha family, no revisions or variants Alpha is bi-endian, use endianness auto-detection implemented below. */ // #elif defined(__alpha__) || defined(_M_ALPHA) // # define Q_PROCESSOR_ALPHA // Q_BYTE_ORDER not defined, use endianness auto-detection /* ARM family, known revisions: V5, V6, V7, V8 ARM is bi-endian, detect using __ARMEL__ or __ARMEB__, falling back to auto-detection implemented below. */ #if defined(__arm__) || defined(__TARGET_ARCH_ARM) || defined(_M_ARM) || defined(__aarch64__) || defined(__ARM64__) # if defined(__aarch64__) || defined(__ARM64__) # define Q_PROCESSOR_ARM_64 # define Q_PROCESSOR_WORDSIZE 8 # else # define Q_PROCESSOR_ARM_32 # endif # if defined(__ARM_ARCH) && __ARM_ARCH > 1 # define Q_PROCESSOR_ARM __ARM_ARCH # elif defined(__TARGET_ARCH_ARM) && __TARGET_ARCH_ARM > 1 # define Q_PROCESSOR_ARM __TARGET_ARCH_ARM # elif defined(_M_ARM) && _M_ARM > 1 # define Q_PROCESSOR_ARM _M_ARM # elif defined(__ARM64_ARCH_8__) \ || defined(__aarch64__) \ || defined(__ARMv8__) \ || defined(__ARMv8_A__) # define Q_PROCESSOR_ARM 8 # elif defined(__ARM_ARCH_7__) \ || defined(__ARM_ARCH_7A__) \ || defined(__ARM_ARCH_7R__) \ || defined(__ARM_ARCH_7M__) \ || defined(__ARM_ARCH_7S__) \ || defined(_ARM_ARCH_7) \ || defined(__CORE_CORTEXA__) # define Q_PROCESSOR_ARM 7 # elif defined(__ARM_ARCH_6__) \ || defined(__ARM_ARCH_6J__) \ || defined(__ARM_ARCH_6T2__) \ || defined(__ARM_ARCH_6Z__) \ || defined(__ARM_ARCH_6K__) \ || defined(__ARM_ARCH_6ZK__) \ || defined(__ARM_ARCH_6M__) # define Q_PROCESSOR_ARM 6 # elif defined(__ARM_ARCH_5TEJ__) \ || defined(__ARM_ARCH_5TE__) # define Q_PROCESSOR_ARM 5 # else # define Q_PROCESSOR_ARM 0 # endif # if Q_PROCESSOR_ARM >= 8 # define Q_PROCESSOR_ARM_V8 # endif # if Q_PROCESSOR_ARM >= 7 # define Q_PROCESSOR_ARM_V7 # endif # if Q_PROCESSOR_ARM >= 6 # define Q_PROCESSOR_ARM_V6 # endif # if Q_PROCESSOR_ARM >= 5 # define Q_PROCESSOR_ARM_V5 # else # error "ARM architecture too old" # endif # if defined(__ARMEL__) # define Q_BYTE_ORDER Q_LITTLE_ENDIAN # elif defined(__ARMEB__) # define Q_BYTE_ORDER Q_BIG_ENDIAN # else // Q_BYTE_ORDER not defined, use endianness auto-detection #endif /* AVR32 family, no revisions or variants AVR32 is big-endian. */ // #elif defined(__avr32__) // # define Q_PROCESSOR_AVR32 // # define Q_BYTE_ORDER Q_BIG_ENDIAN /* Blackfin family, no revisions or variants Blackfin is little-endian. */ // #elif defined(__bfin__) // # define Q_PROCESSOR_BLACKFIN // # define Q_BYTE_ORDER Q_LITTLE_ENDIAN /* X86 family, known variants: 32- and 64-bit X86 is little-endian. */ #elif defined(__i386) || defined(__i386__) || defined(_M_IX86) # define Q_PROCESSOR_X86_32 # define Q_BYTE_ORDER Q_LITTLE_ENDIAN # define Q_PROCESSOR_WORDSIZE 4 /* * We define Q_PROCESSOR_X86 == 6 for anything above a equivalent or better * than a Pentium Pro (the processor whose architecture was called P6) or an * Athlon. * * All processors since the Pentium III and the Athlon 4 have SSE support, so * we use that to detect. That leaves the original Athlon, Pentium Pro and * Pentium II. */ # if defined(_M_IX86) # define Q_PROCESSOR_X86 (_M_IX86/100) # elif defined(__i686__) || defined(__athlon__) || defined(__SSE__) || defined(__pentiumpro__) # define Q_PROCESSOR_X86 6 # elif defined(__i586__) || defined(__k6__) || defined(__pentium__) # define Q_PROCESSOR_X86 5 # elif defined(__i486__) || defined(__80486__) # define Q_PROCESSOR_X86 4 # else # define Q_PROCESSOR_X86 3 # endif #elif defined(__x86_64) || defined(__x86_64__) || defined(__amd64) || defined(_M_X64) # define Q_PROCESSOR_X86 6 # define Q_PROCESSOR_X86_64 # define Q_BYTE_ORDER Q_LITTLE_ENDIAN # define Q_PROCESSOR_WORDSIZE 8 /* Itanium (IA-64) family, no revisions or variants Itanium is bi-endian, use endianness auto-detection implemented below. */ #elif defined(__ia64) || defined(__ia64__) || defined(_M_IA64) # define Q_PROCESSOR_IA64 # define Q_PROCESSOR_WORDSIZE 8 // Q_BYTE_ORDER not defined, use endianness auto-detection /* MIPS family, known revisions: I, II, III, IV, 32, 64 MIPS is bi-endian, use endianness auto-detection implemented below. */ #elif defined(__mips) || defined(__mips__) || defined(_M_MRX000) # define Q_PROCESSOR_MIPS # if defined(_MIPS_ARCH_MIPS1) || (defined(__mips) && __mips - 0 >= 1) # define Q_PROCESSOR_MIPS_I # endif # if defined(_MIPS_ARCH_MIPS2) || (defined(__mips) && __mips - 0 >= 2) # define Q_PROCESSOR_MIPS_II # endif # if defined(_MIPS_ARCH_MIPS3) || (defined(__mips) && __mips - 0 >= 3) # define Q_PROCESSOR_MIPS_III # endif # if defined(_MIPS_ARCH_MIPS4) || (defined(__mips) && __mips - 0 >= 4) # define Q_PROCESSOR_MIPS_IV # endif # if defined(_MIPS_ARCH_MIPS5) || (defined(__mips) && __mips - 0 >= 5) # define Q_PROCESSOR_MIPS_V # endif # if defined(_MIPS_ARCH_MIPS32) || defined(__mips32) || (defined(__mips) && __mips - 0 >= 32) # define Q_PROCESSOR_MIPS_32 # endif # if defined(_MIPS_ARCH_MIPS64) || defined(__mips64) # define Q_PROCESSOR_MIPS_64 # define Q_PROCESSOR_WORDSIZE 8 # endif # if defined(__MIPSEL__) # define Q_BYTE_ORDER Q_LITTLE_ENDIAN # elif defined(__MIPSEB__) # define Q_BYTE_ORDER Q_BIG_ENDIAN # else // Q_BYTE_ORDER not defined, use endianness auto-detection # endif /* Power family, known variants: 32- and 64-bit There are many more known variants/revisions that we do not handle/detect. See http://en.wikipedia.org/wiki/Power_Architecture and http://en.wikipedia.org/wiki/File:PowerISA-evolution.svg Power is bi-endian, use endianness auto-detection implemented below. */ #elif defined(__ppc__) || defined(__ppc) || defined(__powerpc__) \ || defined(_ARCH_COM) || defined(_ARCH_PWR) || defined(_ARCH_PPC) \ || defined(_M_MPPC) || defined(_M_PPC) # define Q_PROCESSOR_POWER # if defined(__ppc64__) || defined(__powerpc64__) || defined(__64BIT__) # define Q_PROCESSOR_POWER_64 # define Q_PROCESSOR_WORDSIZE 8 # else # define Q_PROCESSOR_POWER_32 # endif // Q_BYTE_ORDER not defined, use endianness auto-detection /* S390 family, known variant: S390X (64-bit) S390 is big-endian. */ #elif defined(__s390__) # define Q_PROCESSOR_S390 # if defined(__s390x__) # define Q_PROCESSOR_S390_X # endif # define Q_BYTE_ORDER Q_BIG_ENDIAN /* SuperH family, optional revision: SH-4A SuperH is bi-endian, use endianness auto-detection implemented below. */ // #elif defined(__sh__) // # define Q_PROCESSOR_SH // # if defined(__sh4a__) // # define Q_PROCESSOR_SH_4A // # endif // Q_BYTE_ORDER not defined, use endianness auto-detection /* SPARC family, optional revision: V9 SPARC is big-endian only prior to V9, while V9 is bi-endian with big-endian as the default byte order. Assume all SPARC systems are big-endian. */ #elif defined(__sparc__) # define Q_PROCESSOR_SPARC # if defined(__sparc_v9__) # define Q_PROCESSOR_SPARC_V9 # endif # if defined(__sparc64__) # define Q_PROCESSOR_SPARC_64 # endif # define Q_BYTE_ORDER Q_BIG_ENDIAN #endif /* NOTE: GCC 4.6 added __BYTE_ORDER__, __ORDER_BIG_ENDIAN__, __ORDER_LITTLE_ENDIAN__ and __ORDER_PDP_ENDIAN__ in SVN r165881. If you are using GCC 4.6 or newer, this code will properly detect your target byte order; if you are not, and the __LITTLE_ENDIAN__ or __BIG_ENDIAN__ macros are not defined, then this code will fail to detect the target byte order. */ // Some processors support either endian format, try to detect which we are using. #if !defined(Q_BYTE_ORDER) # if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == Q_BIG_ENDIAN || __BYTE_ORDER__ == Q_LITTLE_ENDIAN) // Reuse __BYTE_ORDER__ as-is, since our Q_*_ENDIAN #defines match the preprocessor defaults # define Q_BYTE_ORDER __BYTE_ORDER__ # elif defined(__BIG_ENDIAN__) || defined(_big_endian__) || defined(_BIG_ENDIAN) # define Q_BYTE_ORDER Q_BIG_ENDIAN # elif defined(__LITTLE_ENDIAN__) || defined(_little_endian__) || defined(_LITTLE_ENDIAN) \ || defined(WINAPI_FAMILY) // WinRT is always little-endian according to MSDN. # define Q_BYTE_ORDER Q_LITTLE_ENDIAN # else # error "Unable to determine byte order!" # endif #endif /* Size of a pointer and the machine register size. We detect a 64-bit system by: * GCC and compatible compilers (Clang, ICC on OS X and Windows) always define __SIZEOF_POINTER__. This catches all known cases of ILP32 builds on 64-bit processors. * Most other Unix compilers define __LP64__ or _LP64 on 64-bit mode (Long and Pointer 64-bit) * If Q_PROCESSOR_WORDSIZE was defined above, it's assumed to match the pointer size. Otherwise, we assume to be 32-bit and then check in qglobal.cpp that it is right. */ #if defined __SIZEOF_POINTER__ # define QT_POINTER_SIZE __SIZEOF_POINTER__ #elif defined(__LP64__) || defined(_LP64) # define QT_POINTER_SIZE 8 #elif defined(Q_PROCESSOR_WORDSIZE) # define QT_POINTER_SIZE Q_PROCESSOR_WORDSIZE #else # define QT_POINTER_SIZE 4 #endif /* Define Q_PROCESSOR_WORDSIZE to be the size of the machine's word (usually, the size of the register). On some architectures where a pointer could be smaller than the register, the macro is defined above. Falls back to QT_POINTER_SIZE if not set explicitly for the platform. */ #ifndef Q_PROCESSOR_WORDSIZE # define Q_PROCESSOR_WORDSIZE QT_POINTER_SIZE #endif #endif // QPROCESSORDETECTION_H