third_party/WebKit/Source/wtf/CPU.h

   1 /*
   2  * Copyright (C) 2006, 2007, 2008, 2009, 2013 Apple Inc. All rights reserved.
   3  * Copyright (C) 2007-2009 Torch Mobile, Inc.
   4  * Copyright (C) 2010, 2011 Research In Motion Limited. All rights reserved.
   5  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  20  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  21  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  24  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef WTF_CPU_h
  30 #define WTF_CPU_h
  31
  32 #include "wtf/Compiler.h"
  33
  34 /* CPU() - the target CPU architecture */
  35 #define CPU(WTF_FEATURE) (defined WTF_CPU_##WTF_FEATURE  && WTF_CPU_##WTF_FEATURE)
  36
  37 /* ==== CPU() - the target CPU architecture ==== */
  38
  39 /* This defines CPU(BIG_ENDIAN) or nothing, as appropriate. */
  40 /* This defines CPU(32BIT) or CPU(64BIT), as appropriate. */
  41
  42 /* CPU(X86) - i386 / x86 32-bit */
  43 #if   defined(__i386__) \
  44     || defined(i386)     \
  45     || defined(_M_IX86)  \
  46     || defined(_X86_)    \
  47     || defined(__THW_INTEL)
  48 #define WTF_CPU_X86 1
  49 #endif
  50
  51 /* CPU(X86_64) - AMD64 / Intel64 / x86_64 64-bit */
  52 #if   defined(__x86_64__) \
  53     || defined(_M_X64)
  54 #define WTF_CPU_X86_64 1
  55 #define WTF_CPU_64BIT 1
  56 #endif
  57
  58 /* CPU(ARM) - ARM, any version*/
  59 #define WTF_ARM_ARCH_AT_LEAST(N) (CPU(ARM) && defined(WTF_ARM_ARCH_VERSION) && WTF_ARM_ARCH_VERSION >= N)
  60
  61 #if   defined(arm) \
  62     || defined(__arm__) \
  63     || defined(ARM) \
  64     || defined(_ARM_)
  65 #define WTF_CPU_ARM 1
  66
  67 #if defined(__ARMEB__)
  68 #define WTF_CPU_BIG_ENDIAN 1
  69
  70 #elif !defined(__ARM_EABI__) \
  71     && !defined(__EABI__) \
  72     && !defined(__VFP_FP__) \
  73     && !defined(_WIN32_WCE) \
  74     && !defined(ANDROID)
  75 #define WTF_CPU_MIDDLE_ENDIAN 1
  76
  77 #endif
  78
  79 /* Set WTF_ARM_ARCH_VERSION */
  80 #if   defined(__ARM_ARCH_4__) \
  81     || defined(__ARM_ARCH_4T__) \
  82     || defined(__MARM_ARMV4__)
  83 #define WTF_ARM_ARCH_VERSION 4
  84
  85 #elif defined(__ARM_ARCH_5__) \
  86     || defined(__ARM_ARCH_5T__) \
  87     || defined(__MARM_ARMV5__)
  88 #define WTF_ARM_ARCH_VERSION 5
  89
  90 #elif defined(__ARM_ARCH_5E__) \
  91     || defined(__ARM_ARCH_5TE__) \
  92     || defined(__ARM_ARCH_5TEJ__)
  93 #define WTF_ARM_ARCH_VERSION 5
  94
  95 #elif defined(__ARM_ARCH_6__) \
  96     || defined(__ARM_ARCH_6J__) \
  97     || defined(__ARM_ARCH_6K__) \
  98     || defined(__ARM_ARCH_6Z__) \
  99     || defined(__ARM_ARCH_6ZK__) \
 100     || defined(__ARM_ARCH_6T2__) \
 101     || defined(__ARMV6__)
 102 #define WTF_ARM_ARCH_VERSION 6
 103
 104 #elif defined(__ARM_ARCH_7A__) \
 105     || defined(__ARM_ARCH_7R__) \
 106     || defined(__ARM_ARCH_7S__)
 107 #define WTF_ARM_ARCH_VERSION 7
 108
 109 /* MSVC sets _M_ARM */
 110 #elif defined(_M_ARM)
 111 #define WTF_ARM_ARCH_VERSION _M_ARM
 112 #else
 113 #define WTF_ARM_ARCH_VERSION 0
 114
 115 #endif
 116
 117 /* Set WTF_THUMB_ARCH_VERSION */
 118 #if   defined(__ARM_ARCH_4T__)
 119 #define WTF_THUMB_ARCH_VERSION 1
 120
 121 #elif defined(__ARM_ARCH_5T__) \
 122     || defined(__ARM_ARCH_5TE__) \
 123     || defined(__ARM_ARCH_5TEJ__)
 124 #define WTF_THUMB_ARCH_VERSION 2
 125
 126 #elif defined(__ARM_ARCH_6J__) \
 127     || defined(__ARM_ARCH_6K__) \
 128     || defined(__ARM_ARCH_6Z__) \
 129     || defined(__ARM_ARCH_6ZK__) \
 130     || defined(__ARM_ARCH_6M__)
 131 #define WTF_THUMB_ARCH_VERSION 3
 132
 133 #elif defined(__ARM_ARCH_6T2__) \
 134     || defined(__ARM_ARCH_7__) \
 135     || defined(__ARM_ARCH_7A__) \
 136     || defined(__ARM_ARCH_7M__) \
 137     || defined(__ARM_ARCH_7R__) \
 138     || defined(__ARM_ARCH_7S__)
 139 #define WTF_THUMB_ARCH_VERSION 4
 140
 141 #else
 142 #define WTF_THUMB_ARCH_VERSION 0
 143 #endif
 144
 145
 146 /* CPU(ARM_THUMB2) - Thumb2 instruction set is available */
 147 #if !defined(WTF_CPU_ARM_THUMB2)
 148 #  if defined(thumb2) || defined(__thumb2__) \
 149     || ((defined(__thumb) || defined(__thumb__)) && WTF_THUMB_ARCH_VERSION == 4)
 150 #    define WTF_CPU_ARM_THUMB2 1
 151 #  elif WTF_ARM_ARCH_AT_LEAST(4)
 152 #    define WTF_CPU_ARM_THUMB2 0
 153 #  else
 154 #    error "Unsupported ARM architecture"
 155 #  endif
 156 #endif /* !defined(WTF_CPU_ARM_THUMB2) */
 157
 158 #if defined(__ARM_NEON__) && !defined(WTF_CPU_ARM_NEON)
 159 #define WTF_CPU_ARM_NEON 1
 160 #endif
 161
 162 #if CPU(ARM_NEON) && (!COMPILER(GCC) || GCC_VERSION_AT_LEAST(4, 7, 0))
 163 // All NEON intrinsics usage can be disabled by this macro.
 164 #define HAVE_ARM_NEON_INTRINSICS 1
 165 #endif
 166
 167 #if defined(__ARM_ARCH_7S__)
 168 #define WTF_CPU_APPLE_ARMV7S 1
 169 #endif
 170
 171 #endif /* ARM */
 172
 173 /* CPU(ARM64) - AArch64 64-bit */
 174 #if defined(__aarch64__)
 175 #define WTF_CPU_ARM64 1
 176 #define WTF_CPU_64BIT 1
 177 #endif
 178
 179 /* This defines CPU(64BIT). */
 180 #if defined(__mips__) && (_MIPS_SIM == _ABI64)
 181 #define WTF_CPU_64BIT 1
 182 #endif
 183
 184 #if !defined(WTF_CPU_64BIT)
 185 #define WTF_CPU_32BIT 1
 186 #endif
 187
 188 #endif /* WTF_CPU_h */