xref: /dragonfly/sys/dev/drm/include/linux/compiler.h (revision 31524921)
1 /*-
2  * Copyright (c) 2010 Isilon Systems, Inc.
3  * Copyright (c) 2010 iX Systems, Inc.
4  * Copyright (c) 2010 Panasas, Inc.
5  * Copyright (c) 2015 François Tigeot
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice unmodified, this list of conditions, and the following
13  *    disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29 
30 #ifndef	_LINUX_COMPILER_H_
31 #define	_LINUX_COMPILER_H_
32 
33 #include <sys/cdefs.h>
34 
35 #define __user
36 #define __kernel
37 #define __safe
38 #define __force
39 #define __nocast
40 #define __iomem
41 #define __chk_user_ptr(x)		0
42 #define __chk_io_ptr(x)			0
43 #define __builtin_warning(x, y...)	(1)
44 #define __acquires(x)
45 #define __releases(x)
46 #define __acquire(x)			0
47 #define __release(x)			0
48 #define __cond_lock(x,c)		(c)
49 #define	__bitwise
50 #define __devinitdata
51 #define __init
52 #define	__devinit
53 #define	__devexit
54 #define __exit
55 #define	__stringify(x)			#x
56 #define	__attribute_const__		__attribute__((__const__))
57 #undef __always_inline
58 #define	__always_inline			inline
59 
60 #define	likely(x)			__builtin_expect(!!(x), 1)
61 #define	unlikely(x)			__builtin_expect(!!(x), 0)
62 #define typeof(x)			__typeof(x)
63 
64 #define __read_mostly
65 #define __always_unused			__unused
66 #define __must_check			__heedresult
67 
68 #define __printf(a,b)			__printflike(a,b)
69 
70 
71 #define barrier()	cpu_ccfence()
72 
73 #define ACCESS_ONCE(x)	(*(volatile typeof(x) *)&(x))
74 
75 #endif	/* _LINUX_COMPILER_H_ */
76