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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __SHARED_COMPILER_H
#define __SHARED_COMPILER_H
#define __noinline __attribute__((noinline))
#define __noreturn __attribute__((noreturn))
#define __inline __attribute__((always_inline))
#define __hot __attribute__((hot))
#define __cold __attribute__((cold))
#define __unused __attribute__((unused))
#define __force __attribute__((force))
#define __section(s) __attribute__((section("." # s)))
#define __aligned(a) __attribute__((aligned(a)))
#define __packed __attribute__((packed))
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
#define BUILD_BUG_ON_ZERO(e) (sizeof(char[1 - 2 * !!(e)]) - 1)
#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a) - 1)
#define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask))
#define __roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
#define __must_be_array(a) \
BUILD_BUG_ON_ZERO(__builtin_types_compatible_p(typeof(a), typeof(&a[0])))
#define ARRAY_SIZE(arr) (sizeof((arr)) / sizeof((arr)[0]) + __must_be_array(arr))
#define BIT(b) (1 << (b))
#define MASK(w) (BIT(w) - 1)
#undef offsetof
#ifdef __compiler_offsetof
# define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
#else
# define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
#endif
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#define min(x, y) ({ \
typeof(x) _min1 = (x); \
typeof(y) _min2 = (y); \
(void) (&_min1 == &_min2); \
_min1 < _min2 ? _min1 : _min2; })
#define max(x, y) ({ \
typeof(x) _max1 = (x); \
typeof(y) _max2 = (y); \
(void) (&_max1 == &_max2); \
_max1 > _max2 ? _max1 : _max2; })
#define min_t(type, x, y) ({ \
type __min1 = (x); \
type __min2 = (y); \
__min1 < __min2 ? __min1 : __min2; })
#define max_t(type, x, y) ({ \
type __max1 = (x); \
type __max2 = (y); \
__max1 > __max2 ? __max1 : __max2; })
#define container_of(ptr, type, member) ({ \
const typeof(((type *)0)->member) * __mptr = (ptr); \
(type *)(((unsigned long)__mptr - offsetof(type, member))); })
#define MAX_ERRNO 4095
#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
static inline void *ERR_PTR(long errornr)
{
return (void *) errornr;
}
static inline long PTR_ERR(const void *ptr)
{
return (long) ptr;
}
static inline long IS_ERR(const void *ptr)
{
return IS_ERR_VALUE((unsigned long)ptr);
}
static inline long IS_ERR_OR_NULL(const void *ptr)
{
return !ptr || IS_ERR_VALUE((unsigned long)ptr);
}
#endif /* __SHARED_COMPILER_H */
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