/*
* Copyright (c) 2005 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup generic
* @{
*/
/** @file
*/
#ifndef KERN_MACROS_H_
#define KERN_MACROS_H_
#include <arch/types.h>
#define isdigit(d) (((d) >= '0') && ((d) <= '9'))
#define islower(c) (((c) >= 'a') && ((c) <= 'z'))
#define isupper(c) (((c) >= 'A') && ((c) <= 'Z'))
#define isalpha(c) (is_lower((c)) || is_upper((c)))
#define isalphanum(c) (is_alpha((c)) || is_digit((c)))
#define isspace(c) \
(((c) == ' ') || ((c) == '\t') || ((c) == '\n') || ((c) == '\r'))
#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))
#define min3(a, b, c) ((a) < (b) ? (min(a, c)) : (min(b, c)))
#define max3(a, b, c) ((a) > (b) ? (max(a, c)) : (max(b, c)))
/** Return true if the intervals overlap.
*
* @param s1 Start address of the first interval.
* @param sz1 Size of the first interval.
* @param s2 Start address of the second interval.
* @param sz2 Size of the second interval.
*/
static inline int overlaps(uintptr_t s1, size_t sz1, uintptr_t s2, size_t sz2)
{
uintptr_t e1 = s1 + sz1;
uintptr_t e2 = s2 + sz2;
return ((s1 < e2) && (s2 < e1));
}
/* Compute overlapping of physical addresses */
#define PA_overlaps(x, szx, y, szy) \
overlaps(KA2PA((x)), (szx), KA2PA((y)), (szy))
#define SIZE2KB(size) ((size) >> 10)
#define SIZE2MB(size) ((size) >> 20)
#define KB2SIZE(kb) ((kb) << 10)
#define MB2SIZE(mb) ((mb) << 20)
#define STRING(arg) STRING_ARG(arg)
#define STRING_ARG(arg) #arg
/** Pseudorandom generator
*
* A pretty standard linear congruential pseudorandom
* number generator (m = 2^32 or 2^64 depending on architecture).
*
*/
#define RANDI(seed) \
({ \
(seed) = 1103515245 * (seed) + 12345; \
(seed); \
})
#endif
/** @}
*/