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Diffstat (limited to 'lib/libnetbsd/sys/cdefs.h')
-rw-r--r-- | lib/libnetbsd/sys/cdefs.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/lib/libnetbsd/sys/cdefs.h b/lib/libnetbsd/sys/cdefs.h new file mode 100644 index 000000000000..8da812693961 --- /dev/null +++ b/lib/libnetbsd/sys/cdefs.h @@ -0,0 +1,84 @@ + +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 2012 SRI International + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * 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. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. + */ + +#ifndef _LIBNETBSD_SYS_CDEFS_H_ +#define _LIBNETBSD_SYS_CDEFS_H_ + +#include_next <sys/cdefs.h> + +#ifndef __dead +#ifdef __dead2 +#define __dead __dead2 +#else +#define __dead +#endif +#endif /* !__dead */ + +/* + * The __CONCAT macro is used to concatenate parts of symbol names, e.g. + * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo. + * The __CONCAT macro is a bit tricky -- make sure you don't put spaces + * in between its arguments. __CONCAT can also concatenate double-quoted + * strings produced by the __STRING macro, but this only works with ANSI C. + */ + +#define ___STRING(x) __STRING(x) +#define ___CONCAT(x,y) __CONCAT(x,y) + +/* + * The following macro is used to remove const cast-away warnings + * from gcc -Wcast-qual; it should be used with caution because it + * can hide valid errors; in particular most valid uses are in + * situations where the API requires it, not to cast away string + * constants. We don't use *intptr_t on purpose here and we are + * explicit about unsigned long so that we don't have additional + * dependencies. + */ +#define __UNCONST(a) ((void *)(unsigned long)(const void *)(a)) + +/* + * Return the number of elements in a statically-allocated array, + * __x. + */ +#define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) + +/* __BIT(n): nth bit, where __BIT(0) == 0x1. */ +#define __BIT(__n) \ + (((uintmax_t)(__n) >= NBBY * sizeof(uintmax_t)) ? 0 : \ + ((uintmax_t)1 << (uintmax_t)((__n) & (NBBY * sizeof(uintmax_t) - 1)))) + +/* __BITS(m, n): bits m through n, m < n. */ +#define __BITS(__m, __n) \ + ((__BIT(MAX((__m), (__n)) + 1) - 1) ^ (__BIT(MIN((__m), (__n))) - 1)) + +#endif /* _LIBNETBSD_SYS_CDEFS_H_ */ |