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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright 2018-2020 Alex Richardson <arichardson@FreeBSD.org>
*
* This software was developed by SRI International and the University of
* Cambridge Computer Laboratory (Department of Computer Science and
* Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
* DARPA SSITH research programme.
*
* This software was developed by SRI International and the University of
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
* ("CTSRD"), as part of the DARPA CRASH research programme.
*
* 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.
*
* $FreeBSD$
*/
#pragma once
/* musl libc does not provide a sys/cdefs.h header */
#if __has_include_next(<sys/cdefs.h>)
#include_next <sys/cdefs.h>
#else
/* No sys/cdefs.h header exists so we have to provide some basic macros */
#ifdef __cplusplus
#define __BEGIN_DECLS extern "C" {
#define __END_DECLS }
#else
#define __BEGIN_DECLS
#define __END_DECLS
#endif
#endif
#ifndef __FBSDID
#define __FBSDID(id)
#endif
#ifndef __IDSTRING
#define __IDSTRING(name, string)
#endif
#ifndef rounddown
#define rounddown(x, y) (((x) / (y)) * (y))
#define rounddown2(x, y) ((x) & (~((y)-1))) /* if y is power of two */
#define roundup(x, y) ((((x) + ((y)-1)) / (y)) * (y)) /* to any y */
#define roundup2(x, y) \
(((x) + ((y)-1)) & (~((y)-1))) /* if y is powers of two */
#define powerof2(x) ((((x)-1) & (x)) == 0)
#endif
#ifndef __pure
#define __pure __attribute__((__pure__))
#endif
#ifndef __packed
#define __packed __attribute__((__packed__))
#endif
#ifndef __dead2
#define __dead2 __attribute__((__noreturn__))
#endif
#ifndef __pure2
#define __pure2 __attribute__((__const__))
#endif
#ifndef __used
#define __used __attribute__((__used__))
#endif
#ifndef __aligned
#define __aligned(x) __attribute__((__aligned__(x)))
#endif
#ifndef __section
#define __section(x) __attribute__((__section__(x)))
#endif
#ifndef __alloc_size
#define __alloc_size(...) __attribute__((__alloc_size__(__VA_ARGS__)))
#endif
#ifndef __alloc_size2
#define __alloc_size2(n, x) __attribute__((__alloc_size__(n, x)))
#endif
#ifndef __alloc_align
#define __alloc_align(x) __attribute__((__alloc_align__(x)))
#endif
#ifndef __result_use_check
#define __result_use_check __attribute__((__warn_unused_result__))
#endif
#ifndef __printflike
#define __printflike(fmtarg, firstvararg) \
__attribute__((__format__(__printf__, fmtarg, firstvararg)))
#endif
#ifndef __printf0like
#define __printf0like(fmtarg, firstvararg) \
__attribute__((__format__(__printf0__, fmtarg, firstvararg)))
#endif
#ifndef __predict_true
#define __predict_true(exp) __builtin_expect((exp), 1)
#endif
#ifndef __predict_false
#define __predict_false(exp) __builtin_expect((exp), 0)
#endif
#ifndef __weak_reference
#ifdef __ELF__
#define __weak_reference(sym, alias) \
__asm__(".weak " #alias); \
__asm__(".equ " #alias ", " #sym)
#else
#define __weak_reference(sym, alias) \
static int alias() __attribute__((weakref(#sym)));
#endif
#endif
/* Some files built as part of the bootstrap libegacy use these macros, but
* since we aren't actually building libc.so, we can defined them to be empty */
#ifndef __sym_compat
#define __sym_compat(sym, impl, verid) /* not needed for bootstrapping */
#endif
#ifndef __sym_default
#define __sym_default(sym, impl, verid) /* not needed for bootstrapping */
#endif
#ifndef __sym_default
#define __warn_references(sym, msg) /* not needed for bootstrapping */
#endif
#ifndef __malloc_like
#define __malloc_like __attribute__((__malloc__))
#endif
#ifndef nitems
// https://stackoverflow.com/questions/1598773/is-there-a-standard-function-in-c-that-would-return-the-length-of-an-array/1598827#1598827
#define nitems(x) \
((sizeof(x) / sizeof(0 [x])) / ((size_t)(!(sizeof(x) % sizeof(0 [x])))))
#endif
#ifndef __min_size
#if !defined(__cplusplus)
#define __min_size(x) static(x)
#else
#define __min_size(x) (x)
#endif
#endif
#ifndef __unused
#define __unused __attribute__((unused))
#endif
#define __format_arg(fmtarg) __attribute__((__format_arg__(fmtarg)))
#ifndef __exported
#define __exported __attribute__((__visibility__("default")))
#endif
#ifndef __hidden
#define __hidden __attribute__((__visibility__("hidden")))
#endif
#ifndef __unreachable
#define __unreachable() __builtin_unreachable()
#endif
#ifndef __clang__
/* GCC doesn't like the printf0 format specifier. Clang treats it the same as
* printf so add the compatibility macro here. */
#define __printf0__ __printf__
#endif
/*
* These should probably be in sys/types.h but mtree expects them to exist
* without including <sys/types.h>
*/
typedef unsigned char u_char;
typedef unsigned short u_short;
typedef unsigned int u_int;
typedef unsigned long u_long;
/* This is needed so that BSNMP doesn't redeclare an incompatible version */
#define HAVE_STRLCPY 1
/* The compiler supports __func__ */
#define HAVE_DECL___FUNC__ 1
/* On MacOS __CONCAT is defined as x ## y, which won't expand macros */
#undef __CONCAT
#define __CONCAT1(x, y) x##y
#define __CONCAT(x, y) __CONCAT1(x, y)
#ifndef __STRING
#define __STRING(x) #x /* stringify without expanding x */
#endif
#ifndef __XSTRING
#define __XSTRING(x) __STRING(x) /* expand x, then stringify */
#endif
#ifndef __has_feature
#define __has_feature(...) 0
#endif
#ifndef __has_builtin
#define __has_builtin(...) 0
#endif
/*
* Nullability qualifiers: currently only supported by Clang.
*/
#if !(defined(__clang__) && __has_feature(nullability))
#define _Nonnull
#define _Nullable
#define _Null_unspecified
#define __NULLABILITY_PRAGMA_PUSH
#define __NULLABILITY_PRAGMA_POP
#else
#define __NULLABILITY_PRAGMA_PUSH \
_Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Wnullability-completeness\"")
#define __NULLABILITY_PRAGMA_POP _Pragma("clang diagnostic pop")
#endif
#ifndef __offsetof
#define __offsetof(type, field) __builtin_offsetof(type, field)
#endif
#define __rangeof(type, start, end) \
(__offsetof(type, end) - __offsetof(type, start))
#ifndef __containerof
#define __containerof(x, s, m) \
({ \
const volatile __typeof(((s *)0)->m) *__x = (x); \
__DEQUALIFY( \
s *, (const volatile char *)__x - __offsetof(s, m)); \
})
#endif
#ifndef __RCSID
#define __RCSID(x)
#endif
#ifndef __FBSDID
#define __FBSDID(x)
#endif
#ifndef __RCSID
#define __RCSID(x)
#endif
#ifndef __RCSID_SOURCE
#define __RCSID_SOURCE(x)
#endif
#ifndef __SCCSID
#define __SCCSID(x)
#endif
#ifndef __COPYRIGHT
#define __COPYRIGHT(x)
#endif
#ifndef __DECONST
#define __DECONST(type, var) ((type)(__uintptr_t)(const void *)(var))
#endif
#ifndef __DEVOLATILE
#define __DEVOLATILE(type, var) ((type)(__uintptr_t)(volatile void *)(var))
#endif
#ifndef __DEQUALIFY
#define __DEQUALIFY(type, var) ((type)(__uintptr_t)(const volatile void *)(var))
#endif
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