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head/sys/compat/linuxkpi/common/include/linux/overflow.h
| Property | Old Value | New Value |
|---|---|---|
| svn:eol-style | null | native \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| /*- | |||||
| * Copyright (c) 2020 The FreeBSD Foundation | |||||
| * | |||||
| * This software was developed by Emmanuel Vadot under sponsorship | |||||
| * from the FreeBSD Foundation. | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. 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. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. | |||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | |||||
| #ifndef __LINUX_OVERFLOW_H__ | |||||
| #define __LINUX_OVERFLOW_H__ | |||||
| #ifndef __has_builtin | |||||
| #define __has_builtin(x) 0 | |||||
| #endif | |||||
| #if __has_builtin(__builtin_add_overflow) | |||||
| #define check_add_overflow(a, b, c) \ | |||||
| __builtin_add_overflow(a, b, c) | |||||
| #else | |||||
| #error "Compiler does not support __builtin_add_overflow" | |||||
| #endif | |||||
| #if __has_builtin(__builtin_mul_overflow) | |||||
| #define check_mul_overflow(a, b, c) \ | |||||
| __builtin_mul_overflow(a, b, c) | |||||
| #else | |||||
| #error "Compiler does not support __builtin_mul_overflow" | |||||
| #endif | |||||
| #endif /* __LINUX_OVERFLOW_H__ */ | |||||