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1.8.7

    1: /*
    2:  * Copyright (c) 2013 Todd C. Miller <Todd.Miller@courtesan.com>
    3:  *
    4:  * Permission to use, copy, modify, and distribute this software for any
    5:  * purpose with or without fee is hereby granted, provided that the above
    6:  * copyright notice and this permission notice appear in all copies.
    7:  *
    8:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
    9:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   10:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   11:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   12:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   13:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   14:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   15:  */
   16: 
   17: #ifndef _COMPAT_ENDIAN_H
   18: #define _COMPAT_ENDIAN_H
   19: 
   20: #ifndef BYTE_ORDER
   21: # undef LITTLE_ENDIAN
   22: # define LITTLE_ENDIAN	1234
   23: # undef BIG_ENDIAN
   24: # define BIG_ENDIAN	4321
   25: # undef UNKNOWN_ENDIAN
   26: # define UNKNOWN_ENDIAN	0
   27: 
   28: /*
   29:  * Attempt to guess endianness.
   30:  * Solaris may define _LITTLE_ENDIAN and _BIG_ENDIAN to 1
   31:  * HP-UX may define __LITTLE_ENDIAN__ and __BIG_ENDIAN__ to 1
   32:  * Otherwise, check for cpu-specific cpp defines.
   33:  * Note that some CPUs are bi-endian, including: arm, powerpc, alpha,
   34:  * sparc64, mips, hppa, sh4 and ia64.
   35:  * We just check for the most common uses.
   36:  */
   37: 
   38: # if defined(__BYTE_ORDER)
   39: #  define BYTE_ORDER	__BYTE_ORDER
   40: # elif defined(_BYTE_ORDER)
   41: #  define BYTE_ORDER	_BYTE_ORDER
   42: # elif defined(_LITTLE_ENDIAN) || defined(__LITTLE_ENDIAN__)
   43: #  define BYTE_ORDER	LITTLE_ENDIAN
   44: # elif defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN__)
   45: #  define BYTE_ORDER	BIG_ENDIAN
   46: # elif defined(__alpha__) || defined(__alpha) || defined(__amd64) || \
   47:        defined(BIT_ZERO_ON_RIGHT) || defined(i386) || defined(__i386) || \
   48:        defined(MIPSEL) || defined(_MIPSEL) || defined(ns32000) || \
   49:        defined(__ns3200) || defined(sun386) || defined(vax) || \
   50:        defined(__vax) || defined(__x86__) || \
   51:        (defined(sun) && defined(__powerpc)) || \
   52:        (!defined(__hpux) && defined(__ia64))
   53: #  define BYTE_ORDER	LITTLE_ENDIAN
   54: # elif defined(__68k__) || defined(apollo) || defined(BIT_ZERO_ON_LEFT) || \
   55:        defined(__convex__) || defined(_CRAY) || defined(DGUX) || \
   56:        defined(__hppa) || defined(__hp9000) || defined(__hp9000s300) || \
   57:        defined(__hp9000s700) || defined(__hp3000s900) || \
   58:        defined(ibm032) || defined(ibm370) || defined(_IBMR2) || \
   59:        defined(is68k) || defined(mc68000) || defined(m68k) || \
   60:        defined(__m68k) || defined(m88k) || defined(__m88k) || \
   61:        defined(MIPSEB) || defined(_MIPSEB) || defined(MPE) || \
   62:        defined(pyr) || defined(__powerpc) || defined(__powerpc__) || \
   63:        defined(sel) || defined(__sparc) || defined(__sparc__) || \
   64:        defined(tahoe) || (defined(__hpux) && defined(__ia64)) || \
   65:        (defined(sun) && defined(__powerpc))
   66: #  define BYTE_ORDER	BIG_ENDIAN
   67: # else
   68: #  define BYTE_ORDER	UNKNOWN_ENDIAN
   69: # endif
   70: #endif /* BYTE_ORDER */
   71: 
   72: #endif /* _COMPAT_ENDIAN_H */