Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/lib/libspl/include/sys/isa_defs.h
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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 #else 250 /* 251 * Currently supported: 252 * x86_64, x32, i386, arm, powerpc, s390, sparc, mips, and RV64G 253 */ 254 #error "Unsupported ISA type" 255 #endif 256 257 #if defined(_ILP32) && defined(_LP64) 258 #error "Both _ILP32 and _LP64 are defined" 259 #endif 260 261 #if !defined(_ILP32) && !defined(_LP64) 262 #error "Neither _ILP32 or _LP64 are defined" 263 #endif 264 265 #if defined(_ZFS_LITTLE_ENDIAN) && defined(_ZFS_BIG_ENDIAN) 266 #error "Both _ZFS_LITTLE_ENDIAN and _ZFS_BIG_ENDIAN are defined" 267 #endif 268 269 #if !defined(_ZFS_LITTLE_ENDIAN) && !defined(_ZFS_BIG_ENDIAN) 270 #error "Neither _ZFS_LITTLE_ENDIAN nor _ZFS_BIG_ENDIAN are defined" 271 #endif 272 273 #ifdef __cplusplus 274 } 275 #endif 276 277 #endif /* _SYS_ISA_DEFS_H */
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