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authorEric Andersen <andersen@codepoet.org>2002-03-01 20:46:26 +0000
committerEric Andersen <andersen@codepoet.org>2002-03-01 20:46:26 +0000
commit9cee42f10dbc5b33866ff137b926a74abd7c1a5b (patch)
tree5211131bde7212ae06d98e9779197cece9b552cc /libc/sysdeps/linux/sparc/sys/sysmacros.h
parent5b470cfcc321c5d50b951fa93a769a4a193ccece (diff)
Major rework of the include files to eliminate redundancy
and to better support each arch. This is a really big patch... -Erik
Diffstat (limited to 'libc/sysdeps/linux/sparc/sys/sysmacros.h')
-rw-r--r--libc/sysdeps/linux/sparc/sys/sysmacros.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/sparc/sys/sysmacros.h b/libc/sysdeps/linux/sparc/sys/sysmacros.h
new file mode 100644
index 000000000..3a2c44d98
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sys/sysmacros.h
@@ -0,0 +1,41 @@
+/* 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; 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
+
+#include <bits/wordsize.h>
+
+/* 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 __WORDSIZE == 64 || (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
+# 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))) }
+#endif
+
+#endif /* sys/sysmacros.h */