sync code with last improvements from OpenBSD

proto/xorgproto/include/X11/Xarch.h

@@ -0,0 +1,94 @@
+#ifndef _XARCH_H_
+# define _XARCH_H_
+
+/*
+ * Copyright 1997 Metro Link Incorporated
+ *
+ *                           All Rights Reserved
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the names of the above listed copyright holder(s)
+ * not be used in advertising or publicity pertaining to distribution of
+ * the software without specific, written prior permission.  The above listed
+ * copyright holder(s) make(s) no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express or
+ * implied warranty.
+ *
+ * THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM(S) ALL WARRANTIES WITH REGARD
+ * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE
+ * LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
+ * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+
+/*
+ * Determine the machine's byte order.
+ */
+
+/* See if it is set in the imake config first */
+# ifdef X_BYTE_ORDER
+
+#  define X_BIG_ENDIAN 4321
+#  define X_LITTLE_ENDIAN 1234
+
+# else
+
+#  if defined(SVR4) || defined(__SVR4)
+#   include <sys/types.h>
+#   include <sys/byteorder.h>
+#  elif defined(CSRG_BASED)
+#   if defined(__NetBSD__) || defined(__OpenBSD__)
+#    include <sys/types.h>
+#   endif
+#   include <machine/endian.h>
+#  elif defined(linux)
+#   if defined __STRICT_ANSI__
+#    undef __STRICT_ANSI__
+#    include <endian.h>
+#    define __STRICT_ANSI__
+#   else
+#    include <endian.h>
+#   endif
+/* 'endian.h' might have been included before 'Xarch.h' */
+#   if !defined(LITTLE_ENDIAN) && defined(__LITTLE_ENDIAN)
+#    define LITTLE_ENDIAN __LITTLE_ENDIAN
+#   endif
+#   if !defined(BIG_ENDIAN) && defined(__BIG_ENDIAN)
+#    define BIG_ENDIAN __BIG_ENDIAN
+#   endif
+#   if !defined(PDP_ENDIAN) && defined(__PDP_ENDIAN)
+#    define PDP_ENDIAN __PDP_ENDIAN
+#   endif
+#   if !defined(BYTE_ORDER) && defined(__BYTE_ORDER)
+#    define BYTE_ORDER __BYTE_ORDER
+#   endif
+#  endif
+
+#  ifndef BYTE_ORDER
+#   define LITTLE_ENDIAN 1234
+#   define BIG_ENDIAN    4321
+
+#   if defined(__sun) && defined(__SVR4)
+#    include <sys/isa_defs.h>
+#    ifdef _LITTLE_ENDIAN
+#     define BYTE_ORDER LITTLE_ENDIAN
+#    endif
+#    ifdef _BIG_ENDIAN
+#     define BYTE_ORDER BIG_ENDIAN
+#    endif
+#   endif /* sun */
+#  endif /* BYTE_ORDER */
+
+#  define X_BYTE_ORDER BYTE_ORDER
+#  define X_BIG_ENDIAN BIG_ENDIAN
+#  define X_LITTLE_ENDIAN LITTLE_ENDIAN
+
+# endif /* not in imake config */
+
+#endif /* _XARCH_H_ */