include/os/linux/spl/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  *
  10  *  The SPL is free software; you can redistribute it and/or modify it
  11  *  under the terms of the GNU General Public License as published by the
  12  *  Free Software Foundation; either version 2 of the License, or (at your
  13  *  option) any later version.
  14  *
  15  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  16  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  18  *  for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License along
  21  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24 #ifndef _SPL_ISA_DEFS_H
  25 #define _SPL_ISA_DEFS_H
  26
  27 /* x86_64 arch specific defines */
  28 #if defined(__x86_64) || defined(__x86_64__)
  29
  30 #if !defined(__x86_64)
  31 #define __x86_64
  32 #endif
  33
  34 #if !defined(__amd64)
  35 #define __amd64
  36 #endif
  37
  38 #if !defined(__x86)
  39 #define __x86
  40 #endif
  41
  42 #if defined(_ILP32)
  43 /* x32-specific defines; careful to *not* define _LP64 here */
  44 #else
  45 #if !defined(_LP64)
  46 #define _LP64
  47 #endif
  48 #endif
  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 /* powerpc (ppc64) arch specific defines */
  66 #elif defined(__powerpc) || defined(__powerpc__) || defined(__powerpc64__)
  67
  68 #if !defined(__powerpc)
  69 #define __powerpc
  70 #endif
  71
  72 #if !defined(__powerpc__)
  73 #define __powerpc__
  74 #endif
  75
  76 #if defined(__powerpc64__)
  77 #if !defined(_LP64)
  78 #define _LP64
  79 #endif
  80 #else
  81 #if !defined(_ILP32)
  82 #define _ILP32
  83 #endif
  84 #endif
  85
  86 /* arm arch specific defines */
  87 #elif defined(__arm) || defined(__arm__)
  88
  89 #if !defined(__arm)
  90 #define __arm
  91 #endif
  92
  93 #if !defined(__arm__)
  94 #define __arm__
  95 #endif
  96
  97 #if !defined(_ILP32)
  98 #define _ILP32
  99 #endif
 100
 101 #if defined(__ARMEL__)
 102 #define _ZFS_LITTLE_ENDIAN
 103 #else
 104 #define _ZFS_BIG_ENDIAN
 105 #endif
 106
 107 /* aarch64 arch specific defines */
 108 #elif defined(__aarch64__)
 109
 110 #if !defined(_LP64)
 111 #define _LP64
 112 #endif
 113
 114 #if defined(__AARCH64EL__)
 115 #define _ZFS_LITTLE_ENDIAN
 116 #else
 117 #define _ZFS_BIG_ENDIAN
 118 #endif
 119
 120 /* sparc arch specific defines */
 121 #elif defined(__sparc) || defined(__sparc__)
 122
 123 #if !defined(__sparc)
 124 #define __sparc
 125 #endif
 126
 127 #if !defined(__sparc__)
 128 #define __sparc__
 129 #endif
 130
 131 #if defined(__arch64__)
 132 #if !defined(_LP64)
 133 #define _LP64
 134 #endif
 135 #else
 136 #if !defined(_ILP32)
 137 #define _ILP32
 138 #endif
 139 #endif
 140
 141 #define _ZFS_BIG_ENDIAN
 142 #define _SUNOS_VTOC_16
 143
 144 /* s390 arch specific defines */
 145 #elif defined(__s390__)
 146 #if defined(__s390x__)
 147 #if !defined(_LP64)
 148 #define _LP64
 149 #endif
 150 #else
 151 #if !defined(_ILP32)
 152 #define _ILP32
 153 #endif
 154 #endif
 155
 156 #define _ZFS_BIG_ENDIAN
 157
 158 /* MIPS arch specific defines */
 159 #elif defined(__mips__)
 160
 161 #if defined(__MIPSEB__)
 162 #define _ZFS_BIG_ENDIAN
 163 #elif defined(__MIPSEL__)
 164 #define _ZFS_LITTLE_ENDIAN
 165 #else
 166 #error MIPS no endian specified
 167 #endif
 168
 169 #ifndef _LP64
 170 #define _ILP32
 171 #endif
 172
 173 #define _SUNOS_VTOC_16
 174
 175 /*
 176  * RISC-V arch specific defines
 177  * only RV64G (including atomic) LP64 is supported yet
 178  */
 179 #elif defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 64 && \
 180         defined(__riscv_atomic) && __riscv_atomic
 181
 182 #if !defined(_LP64)
 183 #define _LP64 1
 184 #endif
 185
 186 #ifndef __riscv__
 187 #define __riscv__
 188 #endif
 189
 190 #ifndef __rv64g__
 191 #define __rv64g__
 192 #endif
 193
 194 #define _ZFS_LITTLE_ENDIAN
 195
 196 #define _SUNOS_VTOC_16
 197
 198 /*
 199  * LoongArch arch specific defines
 200  * only LoongArch64 is supported yet
 201  */
 202 #elif defined(__loongarch__) && defined(__loongarch_lp64)
 203
 204 #if !defined(_LP64)
 205 #define _LP64
 206 #endif
 207
 208 #define _ZFS_LITTLE_ENDIAN
 209 #define _SUNOS_VTOC_16
 210
 211 /* not all LoongArch cores support unaligned accesses in hardware */
 212 #define _ALIGNMENT_REQUIRED     1
 213
 214 #else
 215 /*
 216  * Currently supported:
 217  * x86_64, x32, i386, arm, powerpc, s390, sparc, mips, RV64G, and LoongArch64
 218  */
 219 #error "Unsupported ISA type"
 220 #endif
 221
 222 #if defined(_ILP32) && defined(_LP64)
 223 #error "Both _ILP32 and _LP64 are defined"
 224 #endif
 225
 226 #if !defined(_ILP32) && !defined(_LP64)
 227 #error "Neither _ILP32 or _LP64 are defined"
 228 #endif
 229
 230 #include <sys/byteorder.h>
 231
 232 /*
 233  * CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS will be defined by the Linux
 234  * kernel for architectures which support efficient unaligned access.
 235  */
 236 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
 237 #define HAVE_EFFICIENT_UNALIGNED_ACCESS
 238 #endif
 239
 240 #if defined(_ZFS_LITTLE_ENDIAN) && defined(_ZFS_BIG_ENDIAN)
 241 #error "Both _ZFS_LITTLE_ENDIAN and _ZFS_BIG_ENDIAN are defined"
 242 #endif
 243
 244 #if !defined(_ZFS_LITTLE_ENDIAN) && !defined(_ZFS_BIG_ENDIAN)
 245 #error "Neither _ZFS_LITTLE_ENDIAN or _ZFS_BIG_ENDIAN are defined"
 246 #endif
 247
 248 #endif  /* _SPL_ISA_DEFS_H */