added port of dosfsck. Does not work yet as I cannot figure how to open the device...
[reactos.git] / rosapps / sysutils / dosfsck / compiler.h
1 #ifndef __LINUX_COMPILER_H
2 #define __LINUX_COMPILER_H
3
4 #ifndef __ASSEMBLY__
5
6 #ifdef __CHECKER__
7 # define __user __attribute__((noderef, address_space(1)))
8 # define __kernel /* default address space */
9 # define __safe __attribute__((safe))
10 # define __force __attribute__((force))
11 # define __nocast __attribute__((nocast))
12 # define __iomem __attribute__((noderef, address_space(2)))
13 # define __acquires(x) __attribute__((context(0,1)))
14 # define __releases(x) __attribute__((context(1,0)))
15 # define __acquire(x) __context__(1)
16 # define __release(x) __context__(-1)
17 # define __cond_lock(x) ((x) ? ({ __context__(1); 1; }) : 0)
18 extern void __chk_user_ptr(void __user *);
19 extern void __chk_io_ptr(void __iomem *);
20 #else
21 # define __user
22 # define __kernel
23 # define __safe
24 # define __force
25 # define __nocast
26 # define __iomem
27 # define __chk_user_ptr(x) (void)0
28 # define __chk_io_ptr(x) (void)0
29 # define __builtin_warning(x, y...) (1)
30 # define __acquires(x)
31 # define __releases(x)
32 # define __acquire(x) (void)0
33 # define __release(x) (void)0
34 # define __cond_lock(x) (x)
35 #endif
36
37 #ifdef __KERNEL__
38
39 #if __GNUC__ > 4
40 #error no compiler-gcc.h file for this gcc version
41 #elif __GNUC__ == 4
42 # include <linux/compiler-gcc4.h>
43 #elif __GNUC__ == 3
44 # include <linux/compiler-gcc3.h>
45 #elif __GNUC__ == 2
46 # include <linux/compiler-gcc2.h>
47 #else
48 # error Sorry, your compiler is too old/not recognized.
49 #endif
50
51 /* Intel compiler defines __GNUC__. So we will overwrite implementations
52 * coming from above header files here
53 */
54 #ifdef __INTEL_COMPILER
55 # include <linux/compiler-intel.h>
56 #endif
57
58 /*
59 * Generic compiler-dependent macros required for kernel
60 * build go below this comment. Actual compiler/compiler version
61 * specific implementations come from the above header files
62 */
63
64 #define likely(x) __builtin_expect(!!(x), 1)
65 #define unlikely(x) __builtin_expect(!!(x), 0)
66
67 /* Optimization barrier */
68 #ifndef barrier
69 # define barrier() __memory_barrier()
70 #endif
71
72 #ifndef RELOC_HIDE
73 # define RELOC_HIDE(ptr, off) \
74 ({ unsigned long __ptr; \
75 __ptr = (unsigned long) (ptr); \
76 (typeof(ptr)) (__ptr + (off)); })
77 #endif
78
79 #endif /* __KERNEL__ */
80
81 #endif /* __ASSEMBLY__ */
82
83 /*
84 * Allow us to mark functions as 'deprecated' and have gcc emit a nice
85 * warning for each use, in hopes of speeding the functions removal.
86 * Usage is:
87 * int __deprecated foo(void)
88 */
89 #ifndef __deprecated
90 # define __deprecated /* unimplemented */
91 #endif
92
93 #ifdef MODULE
94 #define __deprecated_for_modules __deprecated
95 #else
96 #define __deprecated_for_modules
97 #endif
98
99 #ifndef __must_check
100 #define __must_check
101 #endif
102
103 /*
104 * Allow us to avoid 'defined but not used' warnings on functions and data,
105 * as well as force them to be emitted to the assembly file.
106 *
107 * As of gcc 3.3, static functions that are not marked with attribute((used))
108 * may be elided from the assembly file. As of gcc 3.3, static data not so
109 * marked will not be elided, but this may change in a future gcc version.
110 *
111 * In prior versions of gcc, such functions and data would be emitted, but
112 * would be warned about except with attribute((unused)).
113 */
114 #ifndef __attribute_used__
115 # define __attribute_used__ /* unimplemented */
116 #endif
117
118 /*
119 * From the GCC manual:
120 *
121 * Many functions have no effects except the return value and their
122 * return value depends only on the parameters and/or global
123 * variables. Such a function can be subject to common subexpression
124 * elimination and loop optimization just as an arithmetic operator
125 * would be.
126 * [...]
127 */
128 #ifndef __attribute_pure__
129 # define __attribute_pure__ /* unimplemented */
130 #endif
131
132 /*
133 * From the GCC manual:
134 *
135 * Many functions do not examine any values except their arguments,
136 * and have no effects except the return value. Basically this is
137 * just slightly more strict class than the `pure' attribute above,
138 * since function is not allowed to read global memory.
139 *
140 * Note that a function that has pointer arguments and examines the
141 * data pointed to must _not_ be declared `const'. Likewise, a
142 * function that calls a non-`const' function usually must not be
143 * `const'. It does not make sense for a `const' function to return
144 * `void'.
145 */
146 #ifndef __attribute_const__
147 # define __attribute_const__ /* unimplemented */
148 #endif
149
150 #ifndef noinline
151 #define noinline
152 #endif
153
154 #ifndef __always_inline
155 #define __always_inline inline
156 #endif
157
158 #endif /* __LINUX_COMPILER_H */