FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/os/linux/spl/sys/isa_defs.h

     /*
      *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
      *  Copyright (C) 2007 The Regents of the University of California.
      *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
      *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
      *  UCRL-CODE-235197
      *
      *  This file is part of the SPL, Solaris Porting Layer.
      *
     *  The SPL is free software; you can redistribute it and/or modify it
     *  under the terms of the GNU General Public License as published by the
     *  Free Software Foundation; either version 2 of the License, or (at your
     *  option) any later version.
     *
     *  The SPL is distributed in the hope that it will be useful, but WITHOUT
     *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     *  for more details.
     *
     *  You should have received a copy of the GNU General Public License along
     *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
     */
    
    #ifndef _SPL_ISA_DEFS_H
    #define _SPL_ISA_DEFS_H
    
    /* x86_64 arch specific defines */
    #if defined(__x86_64) || defined(__x86_64__)
    
    #if !defined(__x86_64)
    #define __x86_64
    #endif
    
    #if !defined(__amd64)
    #define __amd64
    #endif
    
    #if !defined(__x86)
    #define __x86
    #endif
    
    #if defined(_ILP32)
    /* x32-specific defines; careful to *not* define _LP64 here */
    #else
    #if !defined(_LP64)
    #define _LP64
    #endif
    #endif
    
    /* i386 arch specific defines */
    #elif defined(__i386) || defined(__i386__)
    
    #if !defined(__i386)
    #define __i386
    #endif
    
    #if !defined(__x86)
    #define __x86
    #endif
    
    #if !defined(_ILP32)
    #define _ILP32
    #endif
    
    /* powerpc (ppc64) arch specific defines */
    #elif defined(__powerpc) || defined(__powerpc__) || defined(__powerpc64__)
    
    #if !defined(__powerpc)
    #define __powerpc
    #endif
    
    #if !defined(__powerpc__)
    #define __powerpc__
    #endif
    
    #if defined(__powerpc64__)
    #if !defined(_LP64)
    #define _LP64
    #endif
    #else
    #if !defined(_ILP32)
    #define _ILP32
    #endif
    #endif
    
    /* arm arch specific defines */
    #elif defined(__arm) || defined(__arm__)
    
    #if !defined(__arm)
    #define __arm
    #endif
    
    #if !defined(__arm__)
    #define __arm__
    #endif
    
    #if !defined(_ILP32)
    #define _ILP32
    #endif
   
   #if defined(__ARMEL__)
   #define _ZFS_LITTLE_ENDIAN
   #else
   #define _ZFS_BIG_ENDIAN
   #endif
   
   /* aarch64 arch specific defines */
   #elif defined(__aarch64__)
   
   #if !defined(_LP64)
   #define _LP64
   #endif
   
   #if defined(__AARCH64EL__)
   #define _ZFS_LITTLE_ENDIAN
   #else
   #define _ZFS_BIG_ENDIAN
   #endif
   
   /* sparc arch specific defines */
   #elif defined(__sparc) || defined(__sparc__)
   
   #if !defined(__sparc)
   #define __sparc
   #endif
   
   #if !defined(__sparc__)
   #define __sparc__
   #endif
   
   #if defined(__arch64__)
   #if !defined(_LP64)
   #define _LP64
   #endif
   #else
   #if !defined(_ILP32)
   #define _ILP32
   #endif
   #endif
   
   #define _ZFS_BIG_ENDIAN
   #define _SUNOS_VTOC_16
   
   /* s390 arch specific defines */
   #elif defined(__s390__)
   #if defined(__s390x__)
   #if !defined(_LP64)
   #define _LP64
   #endif
   #else
   #if !defined(_ILP32)
   #define _ILP32
   #endif
   #endif
   
   #define _ZFS_BIG_ENDIAN
   
   /* MIPS arch specific defines */
   #elif defined(__mips__)
   
   #if defined(__MIPSEB__)
   #define _ZFS_BIG_ENDIAN
   #elif defined(__MIPSEL__)
   #define _ZFS_LITTLE_ENDIAN
   #else
   #error MIPS no endian specified
   #endif
   
   #ifndef _LP64
   #define _ILP32
   #endif
   
   #define _SUNOS_VTOC_16
   
   /*
    * RISC-V arch specific defines
    * only RV64G (including atomic) LP64 is supported yet
    */
   #elif defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 64 && \
           defined(__riscv_atomic) && __riscv_atomic
   
   #if !defined(_LP64)
   #define _LP64 1
   #endif
   
   #ifndef __riscv__
   #define __riscv__
   #endif
   
   #ifndef __rv64g__
   #define __rv64g__
   #endif
   
   #define _ZFS_LITTLE_ENDIAN
   
   #define _SUNOS_VTOC_16
   
   #else
   /*
    * Currently supported:
    * x86_64, x32, i386, arm, powerpc, s390, sparc, mips, and RV64G
    */
   #error "Unsupported ISA type"
   #endif
   
   #if defined(_ILP32) && defined(_LP64)
   #error "Both _ILP32 and _LP64 are defined"
   #endif
   
   #if !defined(_ILP32) && !defined(_LP64)
   #error "Neither _ILP32 or _LP64 are defined"
   #endif
   
   #include <sys/byteorder.h>
   
   /*
    * CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS will be defined by the Linux
    * kernel for architectures which support efficient unaligned access.
    */
   #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
   #define HAVE_EFFICIENT_UNALIGNED_ACCESS
   #endif
   
   #if defined(_ZFS_LITTLE_ENDIAN) && defined(_ZFS_BIG_ENDIAN)
   #error "Both _ZFS_LITTLE_ENDIAN and _ZFS_BIG_ENDIAN are defined"
   #endif
   
   #if !defined(_ZFS_LITTLE_ENDIAN) && !defined(_ZFS_BIG_ENDIAN)
   #error "Neither _ZFS_LITTLE_ENDIAN or _ZFS_BIG_ENDIAN are defined"
   #endif
   
   #endif  /* _SPL_ISA_DEFS_H */

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