From ffb96c090015f49059d146deefbbd7e1f6baa642 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Thu, 6 Jul 2000 19:22:49 +0000
Subject: Some more major updates to further superate ucLibc from the kernel
 headers (the way it has been done in GNU libc).  -Erik

---
 include/sys/sysmacros.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 include/sys/sysmacros.h

(limited to 'include/sys/sysmacros.h')

diff --git a/include/sys/sysmacros.h b/include/sys/sysmacros.h
new file mode 100644
index 000000000..35760e5e0
--- /dev/null
+++ b/include/sys/sysmacros.h
@@ -0,0 +1,49 @@
+/* Definitions of macros to access `dev_t' values.
+   Copyright (C) 1996, 1997, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SYS_SYSMACROS_H
+#define _SYS_SYSMACROS_H	1
+
+/* For compatibility we provide alternative names.
+
+   The problem here is that compilers other than GCC probably don't
+   have the `long long' type and so `dev_t' is actually an array.  */
+#if defined __GNUC__ && __GNUC__ >= 2
+# define major(dev) ((int)(((dev) >> 8) & 0xff))
+# define minor(dev) ((int)((dev) & 0xff))
+# define makedev(major, minor) ((((unsigned int) (major)) << 8) \
+				| ((unsigned int) (minor)))
+#else
+/* We need to know the word order here.  This assumes that the word order
+   is consistent with the byte order.  */
+# include <endian.h>
+# if __BYTE_ORDER == __BIG_ENDIAN
+#  define major(dev) (((dev).__val[1] >> 8) & 0xff)
+#  define minor(dev) ((dev).__val[1] & 0xff)
+#  define makedev(major, minor) { 0, ((((unsigned int) (major)) << 8) \
+				      | ((unsigned int) (minor))) }
+# else
+#  define major(dev) (((dev).__val[0] >> 8) & 0xff)
+#  define minor(dev) ((dev).__val[0] & 0xff)
+#  define makedev(major, minor) { ((((unsigned int) (major)) << 8) \
+				   | ((unsigned int) (minor))), 0 }
+# endif
+#endif
+
+#endif /* sys/sysmacros.h */
-- 
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