lib/libspl/include/sys/isa_defs.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or https://opensource.org/licenses/CDDL-1.0.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SYS_ISA_DEFS_H
  28 #define _SYS_ISA_DEFS_H
  29
  30 #ifdef  __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 /* x86_64 arch specific defines */
  35 #if defined(__x86_64) || defined(__x86_64__)
  36
  37 #if !defined(__x86_64)
  38 #define __x86_64
  39 #endif
  40
  41 #if !defined(__amd64)
  42 #define __amd64
  43 #endif
  44
  45 #if !defined(__x86)
  46 #define __x86
  47 #endif
  48
  49 #if defined(_ILP32)
  50 /* x32-specific defines; careful to *not* define _LP64 here */
  51 #else
  52 #if !defined(_LP64)
  53 #define _LP64
  54 #endif
  55 #endif
  56
  57 #if !defined(_ZFS_LITTLE_ENDIAN)
  58 #define _ZFS_LITTLE_ENDIAN
  59 #endif
  60
  61 #define _SUNOS_VTOC_16
  62 #define HAVE_EFFICIENT_UNALIGNED_ACCESS
  63
  64 /* i386 arch specific defines */
  65 #elif defined(__i386) || defined(__i386__)
  66
  67 #if !defined(__i386)
  68 #define __i386
  69 #endif
  70
  71 #if !defined(__x86)
  72 #define __x86
  73 #endif
  74
  75 #if !defined(_ILP32)
  76 #define _ILP32
  77 #endif
  78
  79 #if !defined(_ZFS_LITTLE_ENDIAN)
  80 #define _ZFS_LITTLE_ENDIAN
  81 #endif
  82
  83 #define _SUNOS_VTOC_16
  84 #define HAVE_EFFICIENT_UNALIGNED_ACCESS
  85
  86 /* powerpc arch specific defines */
  87 #elif defined(__powerpc) || defined(__powerpc__) || defined(__powerpc64__)
  88
  89 #if !defined(__powerpc)
  90 #define __powerpc
  91 #endif
  92
  93 #if !defined(__powerpc__)
  94 #define __powerpc__
  95 #endif
  96
  97 #if defined(__powerpc64__)
  98 #if !defined(_LP64)
  99 #define _LP64
 100 #endif
 101 #else
 102 #if !defined(_ILP32)
 103 #define _ILP32
 104 #endif
 105 #endif
 106
 107 #define _SUNOS_VTOC_16
 108 #define HAVE_EFFICIENT_UNALIGNED_ACCESS
 109
 110 #if defined(__BYTE_ORDER)
 111 #if defined(__BIG_ENDIAN) && __BYTE_ORDER == __BIG_ENDIAN
 112 #define _ZFS_BIG_ENDIAN
 113 #elif defined(__LITTLE_ENDIAN) && __BYTE_ORDER == __LITTLE_ENDIAN
 114 #define _ZFS_LITTLE_ENDIAN
 115 #endif
 116 #elif defined(_BYTE_ORDER)
 117 #if defined(_BIG_ENDIAN) && _BYTE_ORDER == _BIG_ENDIAN
 118 #define _ZFS_BIG_ENDIAN
 119 #elif defined(_LITTLE_ENDIAN) && _BYTE_ORDER == _LITTLE_ENDIAN
 120 #define _ZFS_LITTLE_ENDIAN
 121 #endif
 122 #elif defined(_BIG_ENDIAN) && !defined(_LITTLE_ENDIAN)
 123 #define _ZFS_BIG_ENDIAN
 124 #elif defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN)
 125 #define _ZFS_LITTLE_ENDIAN
 126 #endif
 127
 128 /* arm arch specific defines */
 129 #elif defined(__arm) || defined(__arm__)
 130
 131 #if !defined(__arm)
 132 #define __arm
 133 #endif
 134
 135 #if !defined(__arm__)
 136 #define __arm__
 137 #endif
 138
 139 #if !defined(_ILP32)
 140 #define _ILP32
 141 #endif
 142
 143 #if defined(__ARMEL__)
 144 #define _ZFS_LITTLE_ENDIAN
 145 #else
 146 #define _ZFS_BIG_ENDIAN
 147 #endif
 148
 149 #define _SUNOS_VTOC_16
 150
 151 #if defined(__ARM_FEATURE_UNALIGNED)
 152 #define HAVE_EFFICIENT_UNALIGNED_ACCESS
 153 #endif
 154
 155 /* aarch64 arch specific defines */
 156 #elif defined(__aarch64__)
 157
 158 #if !defined(_LP64)
 159 #define _LP64
 160 #endif
 161
 162 #if defined(__AARCH64EL__)
 163 #define _ZFS_LITTLE_ENDIAN
 164 #else
 165 #define _ZFS_BIG_ENDIAN
 166 #endif
 167
 168 #define _SUNOS_VTOC_16
 169
 170 /* sparc arch specific defines */
 171 #elif defined(__sparc) || defined(__sparc__)
 172
 173 #if !defined(__sparc)
 174 #define __sparc
 175 #endif
 176
 177 #if !defined(__sparc__)
 178 #define __sparc__
 179 #endif
 180
 181 #define _ZFS_BIG_ENDIAN
 182 #define _SUNOS_VTOC_16
 183
 184 #if defined(__arch64__)
 185 #if !defined(_LP64)
 186 #define _LP64
 187 #endif
 188 #else
 189 #if !defined(_ILP32)
 190 #define _ILP32
 191 #endif
 192 #endif
 193
 194 /* s390 arch specific defines */
 195 #elif defined(__s390__)
 196 #if defined(__s390x__)
 197 #if !defined(_LP64)
 198 #define _LP64
 199 #endif
 200 #else
 201 #if !defined(_ILP32)
 202 #define _ILP32
 203 #endif
 204 #endif
 205
 206 #define _ZFS_BIG_ENDIAN
 207 #define _SUNOS_VTOC_16
 208
 209 /* MIPS arch specific defines */
 210 #elif defined(__mips__)
 211
 212 #if defined(__MIPSEB__)
 213 #define _ZFS_BIG_ENDIAN
 214 #elif defined(__MIPSEL__)
 215 #define _ZFS_LITTLE_ENDIAN
 216 #else
 217 #error MIPS no endian specified
 218 #endif
 219
 220 #if !defined(_LP64) && !defined(_ILP32)
 221 #define _ILP32
 222 #endif
 223
 224 #define _SUNOS_VTOC_16
 225
 226 /*
 227  * RISC-V arch specific defines
 228  * only RV64G (including atomic) LP64 is supported yet
 229  */
 230 #elif defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 64 && \
 231         defined(__riscv_atomic) && __riscv_atomic
 232
 233 #if !defined(_LP64)
 234 #define _LP64 1
 235 #endif
 236
 237 #ifndef __riscv__
 238 #define __riscv__
 239 #endif
 240
 241 #ifndef __rv64g__
 242 #define __rv64g__
 243 #endif
 244
 245 #define _ZFS_LITTLE_ENDIAN
 246
 247 #define _SUNOS_VTOC_16
 248
 249 /*
 250  * LoongArch arch specific defines
 251  * only LoongArch64 is supported yet
 252  */
 253 #elif defined(__loongarch__) && defined(__loongarch_lp64)
 254
 255 #if !defined(_LP64)
 256 #define _LP64
 257 #endif
 258
 259 #define _ZFS_LITTLE_ENDIAN
 260 #define _SUNOS_VTOC_16
 261
 262 /* not all LoongArch cores support unaligned accesses in hardware */
 263 #define _ALIGNMENT_REQUIRED     1
 264
 265 #else
 266 /*
 267  * Currently supported:
 268  * x86_64, x32, i386, arm, powerpc, s390, sparc, mips, RV64G, and LoongArch64
 269  */
 270 #error "Unsupported ISA type"
 271 #endif
 272
 273 #if defined(_ILP32) && defined(_LP64)
 274 #error "Both _ILP32 and _LP64 are defined"
 275 #endif
 276
 277 #if !defined(_ILP32) && !defined(_LP64)
 278 #error "Neither _ILP32 or _LP64 are defined"
 279 #endif
 280
 281 #if defined(_ZFS_LITTLE_ENDIAN) && defined(_ZFS_BIG_ENDIAN)
 282 #error "Both _ZFS_LITTLE_ENDIAN and _ZFS_BIG_ENDIAN are defined"
 283 #endif
 284
 285 #if !defined(_ZFS_LITTLE_ENDIAN) && !defined(_ZFS_BIG_ENDIAN)
 286 #error "Neither _ZFS_LITTLE_ENDIAN nor _ZFS_BIG_ENDIAN are defined"
 287 #endif
 288
 289 #ifdef  __cplusplus
 290 }
 291 #endif
 292
 293 #endif  /* _SYS_ISA_DEFS_H */