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107 lines
3.2 KiB
107 lines
3.2 KiB
/* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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*/ |
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#ifndef __SHARED_COMPILER_H |
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#define __SHARED_COMPILER_H |
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#define __noinline __attribute__((noinline)) |
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#define __noreturn __attribute__((noreturn)) |
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#define __inline __attribute__((always_inline)) |
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#define __hot __attribute__((hot)) |
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#define __cold __attribute__((cold)) |
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#define __unused __attribute__((unused)) |
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#define __force __attribute__((force)) |
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#define __section(s) __attribute__((section("." # s))) |
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#define __aligned(a) __attribute__((aligned(a))) |
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#define __packed __attribute__((packed)) |
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#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) |
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#define BUILD_BUG_ON_ZERO(e) (sizeof(char[1 - 2 * !!(e)]) - 1) |
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#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a) - 1) |
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#define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask)) |
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#define __roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) |
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#define __must_be_array(a) \ |
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BUILD_BUG_ON_ZERO(__builtin_types_compatible_p(typeof(a), typeof(&a[0]))) |
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#define ARRAY_SIZE(arr) (sizeof((arr)) / sizeof((arr)[0]) + __must_be_array(arr)) |
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#define BIT(b) (1 << (b)) |
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#define MASK(w) (BIT(w) - 1) |
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#undef offsetof |
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#ifdef __compiler_offsetof |
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# define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER) |
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#else |
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# define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) |
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#endif |
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#define likely(x) __builtin_expect(!!(x), 1) |
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#define unlikely(x) __builtin_expect(!!(x), 0) |
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#define min(x, y) ({ \ |
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typeof(x) _min1 = (x); \ |
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typeof(y) _min2 = (y); \ |
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(void) (&_min1 == &_min2); \ |
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_min1 < _min2 ? _min1 : _min2; }) |
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#define max(x, y) ({ \ |
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typeof(x) _max1 = (x); \ |
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typeof(y) _max2 = (y); \ |
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(void) (&_max1 == &_max2); \ |
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_max1 > _max2 ? _max1 : _max2; }) |
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#define min_t(type, x, y) ({ \ |
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type __min1 = (x); \ |
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type __min2 = (y); \ |
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__min1 < __min2 ? __min1 : __min2; }) |
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#define max_t(type, x, y) ({ \ |
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type __max1 = (x); \ |
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type __max2 = (y); \ |
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__max1 > __max2 ? __max1 : __max2; }) |
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#define container_of(ptr, type, member) ({ \ |
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const typeof(((type *)0)->member) * __mptr = (ptr); \ |
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(type *)(((unsigned long)__mptr - offsetof(type, member))); }) |
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#define MAX_ERRNO 4095 |
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#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO) |
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static inline void *ERR_PTR(long errornr) |
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{ |
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return (void *) errornr; |
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} |
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static inline long PTR_ERR(const void *ptr) |
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{ |
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return (long) ptr; |
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} |
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static inline long IS_ERR(const void *ptr) |
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{ |
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return IS_ERR_VALUE((unsigned long)ptr); |
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} |
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static inline long IS_ERR_OR_NULL(const void *ptr) |
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{ |
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return !ptr || IS_ERR_VALUE((unsigned long)ptr); |
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} |
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#endif /* __SHARED_COMPILER_H */
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