include/sys/isa_defs.h

   1 /*****************************************************************************\
   2  *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
   3  *  Copyright (C) 2007 The Regents of the University of California.
   4  *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
   5  *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
   6  *  UCRL-CODE-235197
   7  *
   8  *  This file is part of the SPL, Solaris Porting Layer.
   9  *  For details, see <http://zfsonlinux.org/>.
  10  *
  11  *  The SPL is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License as published by the
  13  *  Free Software Foundation; either version 2 of the License, or (at your
  14  *  option) any later version.
  15  *
  16  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19  *  for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License along
  22  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  23 \*****************************************************************************/
  24
  25 #ifndef _SPL_ISA_DEFS_H
  26 #define _SPL_ISA_DEFS_H
  27
  28 /* x86_64 arch specific defines */
  29 #if defined(__x86_64) || defined(__x86_64__)
  30
  31 #if !defined(__x86_64)
  32 #define __x86_64
  33 #endif
  34
  35 #if !defined(__amd64)
  36 #define __amd64
  37 #endif
  38
  39 #if !defined(__x86)
  40 #define __x86
  41 #endif
  42
  43 #if !defined(_LP64)
  44 #define _LP64
  45 #endif
  46
  47 #define _ALIGNMENT_REQUIRED     1
  48
  49
  50 /* i386 arch specific defines */
  51 #elif defined(__i386) || defined(__i386__)
  52
  53 #if !defined(__i386)
  54 #define __i386
  55 #endif
  56
  57 #if !defined(__x86)
  58 #define __x86
  59 #endif
  60
  61 #if !defined(_ILP32)
  62 #define _ILP32
  63 #endif
  64
  65 #define _ALIGNMENT_REQUIRED     0
  66
  67 /* powerpc (ppc64) arch specific defines */
  68 #elif defined(__powerpc) || defined(__powerpc__) || defined(__powerpc64__)
  69
  70 #if !defined(__powerpc)
  71 #define __powerpc
  72 #endif
  73
  74 #if !defined(__powerpc__)
  75 #define __powerpc__
  76 #endif
  77
  78 #if defined(__powerpc64__)
  79 #if !defined(_LP64)
  80 #define _LP64
  81 #endif
  82 #else
  83 #if !defined(_ILP32)
  84 #define _ILP32
  85 #endif
  86 #endif
  87
  88 /*
  89  * Illumos doesn't define _ALIGNMENT_REQUIRED for PPC, so default to 1
  90  * out of paranoia.
  91  */
  92 #define _ALIGNMENT_REQUIRED     1
  93
  94 /* arm arch specific defines */
  95 #elif defined(__arm) || defined(__arm__) || defined(__aarch64__)
  96
  97 #if !defined(__arm)
  98 #define __arm
  99 #endif
 100
 101 #if !defined(__arm__)
 102 #define __arm__
 103 #endif
 104
 105 #if defined(__aarch64__)
 106 #if !defined(_LP64)
 107 #define _LP64
 108 #endif
 109 #else
 110 #if !defined(_ILP32)
 111 #define _ILP32
 112 #endif
 113 #endif
 114
 115 #if defined(__ARMEL__) || defined(__AARCH64EL__)
 116 #define _LITTLE_ENDIAN
 117 #else
 118 #define _BIG_ENDIAN
 119 #endif
 120
 121 /*
 122  * Illumos doesn't define _ALIGNMENT_REQUIRED for ARM, so default to 1
 123  * out of paranoia.
 124  */
 125 #define _ALIGNMENT_REQUIRED     1
 126
 127 /* sparc arch specific defines */
 128 #elif defined(__sparc) || defined(__sparc__)
 129
 130 #if !defined(__sparc)
 131 #define __sparc
 132 #endif
 133
 134 #if !defined(__sparc__)
 135 #define __sparc__
 136 #endif
 137
 138 #if defined(__arch64__)
 139 #if !defined(_LP64)
 140 #define _LP64
 141 #endif
 142 #else
 143 #if !defined(_ILP32)
 144 #define _ILP32
 145 #endif
 146 #endif
 147
 148 #define _BIG_ENDIAN
 149 #define _SUNOS_VTOC_16
 150 #define _ALIGNMENT_REQUIRED     1
 151
 152 /* s390 arch specific defines */
 153 #elif defined(__s390__)
 154 #if defined(__s390x__)
 155 #if !defined(_LP64)
 156 #define _LP64
 157 #endif
 158 #else
 159 #if !defined(_ILP32)
 160 #define _ILP32
 161 #endif
 162 #endif
 163
 164 #define _BIG_ENDIAN
 165
 166 /*
 167  * Illumos doesn't define _ALIGNMENT_REQUIRED for s390, so default to 1
 168  * out of paranoia.
 169  */
 170 #define _ALIGNMENT_REQUIRED     1
 171
 172 /* MIPS arch specific defines */
 173 #elif defined(__mips__)
 174
 175 #if defined(__MIPSEB__)
 176 #define _BIG_ENDIAN
 177 #elif defined(__MIPSEL__)
 178 #define _LITTLE_ENDIAN
 179 #else
 180 #error MIPS no endian specified
 181 #endif
 182
 183 #ifndef _LP64
 184 #define _ILP32
 185 #endif
 186
 187 #define _SUNOS_VTOC_16
 188
 189 /*
 190  * Illumos doesn't define _ALIGNMENT_REQUIRED for MIPS, so default to 1
 191  * out of paranoia.
 192  */
 193 #define _ALIGNMENT_REQUIRED     1
 194
 195 #else
 196 /*
 197  * Currently supported:
 198  * x86_64, i386, arm, powerpc, s390, sparc, and mips
 199  */
 200 #error "Unsupported ISA type"
 201 #endif
 202
 203 #if defined(_ILP32) && defined(_LP64)
 204 #error "Both _ILP32 and _LP64 are defined"
 205 #endif
 206
 207 #if !defined(_ILP32) && !defined(_LP64)
 208 #error "Neither _ILP32 or _LP64 are defined"
 209 #endif
 210
 211 #include <sys/byteorder.h>
 212
 213 /*
 214  * CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS will be defined by the Linux
 215  * kernel for architectures which support efficient unaligned access.
 216  */
 217 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
 218 #define        HAVE_EFFICIENT_UNALIGNED_ACCESS
 219 #endif
 220
 221 #if defined(__LITTLE_ENDIAN) && !defined(_LITTLE_ENDIAN)
 222 #define _LITTLE_ENDIAN __LITTLE_ENDIAN
 223 #endif
 224
 225 #if defined(__BIG_ENDIAN) && !defined(_BIG_ENDIAN)
 226 #define _BIG_ENDIAN __BIG_ENDIAN
 227 #endif
 228
 229 #if defined(_LITTLE_ENDIAN) && defined(_BIG_ENDIAN)
 230 #error "Both _LITTLE_ENDIAN and _BIG_ENDIAN are defined"
 231 #endif
 232
 233 #if !defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN)
 234 #error "Neither _LITTLE_ENDIAN or _BIG_ENDIAN are defined"
 235 #endif
 236
 237 #endif  /* _SPL_ISA_DEFS_H */