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/* Copyright (C) 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008.
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
#include <features.h>
#include <sys/isa_defs.h>
#ifdef __USE_MISC
# define dtob(DD) ((DD) << DEV_BSHIFT)
# define btod(BB) (((BB) + DEV_BSIZE - 1) >> DEV_BSHIFT)
# define btodt(BB) ((BB) >> DEV_BSHIFT)
# define lbtod(BB) (((offset_t)(BB) + DEV_BSIZE - 1) >> DEV_BSHIFT)
# define O_BITSMAJOR 7
# define O_BITSMINOR 8
# define O_MAXMAJ 0x7f
# define O_MAXMIN 0xff
# define L_BITSMAJOR32 14
# define L_BITSMINOR32 18
# define L_MAXMAJ32 0x3fff
# define L_MAXMIN32 0x3ffff
# ifdef _LP64
# define L_BITSMAJOR 32
# define L_BITSMINOR 32
# define L_MAXMAJ 0xfffffffful
# define L_MAXMIN 0xfffffffful
# else
# define L_BITSMAJOR L_BITSMAJOR32
# define L_BITSMINOR L_BITSMINOR32
# define L_MAXMAJ L_MAXMAJ32
# define L_MAXMIN L_MAXMIN32
# endif
# define major(x) (major_t)(((dev_t)(x)) >> L_BITSMINOR)
# define getmajor(x) major(x)
# define minor(x) (minor_t)((x) & L_MAXMIN)
# define getminor(x) minor(x)
# define makedev(x, y) (dev_t)(((dev_t)(x) << L_BITSMINOR) | \
((y) & L_MAXMIN))
# define makedevice(x, y) makedev(x, y)
# define emajor(x) (major_t)(((unsigned int)(x) >> O_BITSMINOR) > \
O_MAXMAJ) ? NODEV : (((unsigned int)(x) >> O_BITSMINOR) & O_MAXMAJ)
# define eminor(x) (minor_t)((x) & O_MAXMIN)
# define cmpdev(x) (o_dev_t)((((x) >> L_BITSMINOR) > O_MAXMAJ || \
((x) & L_MAXMIN) > O_MAXMIN) ? NODEV : \
((((x) >> L_BITSMINOR) << O_BITSMINOR) | ((x) & O_MAXMIN)))
# define expdev(x) (dev_t)(((dev_t)(((x) >> O_BITSMINOR) & O_MAXMAJ) << \
L_BITSMINOR) | ((x) & O_MAXMIN))
# ifndef howmany
# define howmany(x, y) (((x)+((y)-1))/(y))
# endif
# ifndef roundup
# define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
# endif
# define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
# define ISP2(x) (((x) & ((x) - 1)) == 0)
# define P2ALIGN(x, align) ((x) & -(align))
# define P2PHASE(x, align) ((x) & ((align) - 1))
# define P2NPHASE(x, align) (-(x) & ((align) - 1))
# define P2ROUNDUP(x, align) (-(-(x) & -(align)))
# define P2END(x, align) (-(~(x) & -(align)))
# define P2PHASEUP(x, align, phase) ((phase) - (((phase) - (x)) & -(align)))
# define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1)
# define P2SAMEHIGHBIT(x, y) (((x) ^ (y)) < ((x) & (y)))
# define P2ALIGN_TYPED(x, align, type) ((type)(x) & -(type)(align))
# define P2PHASE_TYPED(x, align, type) ((type)(x) & ((type)(align) - 1))
# define P2NPHASE_TYPED(x, align, type) (-(type)(x) & ((type)(align) - 1))
# define P2ROUNDUP_TYPED(x, align, type) (-(-(type)(x) & -(type)(align)))
# define P2END_TYPED(x, align, type) (-(~(type)(x) & -(type)(align)))
# define P2PHASEUP_TYPED(x, align, phase, type) ((type)(phase) - \
(((type)(phase) - (type)(x)) & -(type)(align)))
# define P2CROSS_TYPED(x, y, align, type) (((type)(x) ^ (type)(y)) > \
(type)(align) - 1)
# define P2SAMEHIGHBIT_TYPED(x, y, type) (((type)(x) ^ (type)(y)) < \
((type)(x) & (type)(y)))
/* For compatibility with GNU/Linux. */
# define gnu_dev_major(dev) major (dev)
# define gnu_dev_minor(dev) minor (dev)
# define gnu_dev_makedev(maj, min) makedev (maj, min)
#endif /* __USE_MISC */
#endif /* _SYS_SYSMACROS_H */
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