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Annotation of embedaddon/sudo/compat/endian.h, revision 1.1.1.1

1.1       misho       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 */