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c66d2821 PMF |
1 | #ifndef KERNELCOMPAT_H |
2 | #define KERNELCOMPAT_H | |
3 | ||
59b161cd PMF |
4 | #include "compiler.h" |
5 | ||
c66d2821 PMF |
6 | #include <string.h> |
7 | ||
8 | #define container_of(ptr, type, member) ({ \ | |
9 | const typeof( ((type *)0)->member ) *__mptr = (ptr); \ | |
10 | (type *)( (char *)__mptr - offsetof(type,member) );}) | |
11 | ||
b6bf28ec PMF |
12 | #define KERN_DEBUG "" |
13 | #define KERN_NOTICE "" | |
14 | #define KERN_INFO "" | |
15 | #define KERN_ERR "" | |
16 | #define KERN_ALERT "" | |
bb07823d | 17 | #define KERN_WARNING "" |
c66d2821 | 18 | |
59b161cd PMF |
19 | /* ERROR OPS */ |
20 | ||
21 | #define MAX_ERRNO 4095 | |
22 | ||
23 | #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO) | |
24 | ||
c66d2821 PMF |
25 | static inline void *ERR_PTR(long error) |
26 | { | |
59b161cd | 27 | return (void *) error; |
c66d2821 PMF |
28 | } |
29 | ||
59b161cd PMF |
30 | static inline long PTR_ERR(const void *ptr) |
31 | { | |
32 | return (long) ptr; | |
33 | } | |
34 | ||
35 | static inline long IS_ERR(const void *ptr) | |
36 | { | |
37 | return IS_ERR_VALUE((unsigned long)ptr); | |
38 | } | |
39 | ||
40 | ||
41 | /* FIXED SIZE INTEGERS */ | |
c66d2821 PMF |
42 | |
43 | #include <stdint.h> | |
44 | ||
59b161cd | 45 | typedef uint8_t u8; |
c66d2821 PMF |
46 | typedef uint16_t u16; |
47 | typedef uint32_t u32; | |
59b161cd | 48 | typedef uint64_t u64; |
c66d2821 | 49 | |
b6bf28ec PMF |
50 | #define min_t(type, x, y) ({ \ |
51 | type __min1 = (x); \ | |
52 | type __min2 = (y); \ | |
53 | __min1 < __min2 ? __min1: __min2; }) | |
54 | ||
55 | #define max_t(type, x, y) ({ \ | |
56 | type __max1 = (x); \ | |
57 | type __max2 = (y); \ | |
58 | __max1 > __max2 ? __max1: __max2; }) | |
59 | ||
60 | ||
61 | /* MUTEXES */ | |
c66d2821 PMF |
62 | |
63 | #include <pthread.h> | |
64 | ||
65 | #define DEFINE_MUTEX(m) pthread_mutex_t (m) = PTHREAD_MUTEX_INITIALIZER; | |
66 | ||
67 | #define mutex_lock(m) pthread_mutex_lock(m) | |
68 | ||
69 | #define mutex_unlock(m) pthread_mutex_unlock(m) | |
70 | ||
bb07823d PMF |
71 | /* SPINLOCKS */ |
72 | ||
73 | typedef int spinlock_t; | |
74 | ||
75 | #define spin_lock(a) /* nothing */ | |
76 | #define spin_unlock(a) /* nothing */ | |
77 | #define spin_lock_init(a) /* nothing */ | |
78 | ||
79 | ||
b6bf28ec | 80 | /* MALLOCATION */ |
c66d2821 PMF |
81 | |
82 | #include <stdlib.h> | |
83 | ||
84 | #define kmalloc(s, t) malloc(s) | |
85 | #define kzalloc(s, t) malloc(s) | |
86 | #define kfree(p) free((void *)p) | |
87 | #define kstrdup(s, t) strdup(s) | |
88 | ||
bb07823d PMF |
89 | #define GFP_KERNEL |
90 | ||
b6bf28ec | 91 | /* PRINTK */ |
c66d2821 PMF |
92 | |
93 | #include <stdio.h> | |
94 | #define printk(fmt, args...) printf(fmt, ## args) | |
95 | ||
59b161cd PMF |
96 | /* MEMORY BARRIERS */ |
97 | ||
98 | #define smp_rmb() do {} while(0) | |
99 | #define smp_wmb() do {} while(0) | |
100 | #define smp_mb() do {} while(0) | |
101 | #define smp_mb__after_atomic_inc() do {} while(0) | |
102 | ||
103 | #define read_barrier_depends() do {} while(0) | |
104 | #define smp_read_barrier_depends() do {} while(0) | |
c66d2821 | 105 | |
59b161cd | 106 | /* RCU */ |
c66d2821 | 107 | |
59b161cd | 108 | #define rcu_assign_pointer(a, b) do {} while(0) |
b6bf28ec PMF |
109 | #define call_rcu_sched(a,b) do {} while(0) |
110 | #define rcu_barrier_sched() do {} while(0) | |
c66d2821 | 111 | |
59b161cd | 112 | /* ATOMICITY */ |
b6bf28ec | 113 | |
59b161cd PMF |
114 | #include <signal.h> |
115 | ||
116 | typedef struct { sig_atomic_t counter; } atomic_t; | |
117 | ||
118 | static inline int atomic_dec_and_test(atomic_t *p) | |
119 | { | |
120 | (p->counter)--; | |
121 | return !p->counter; | |
122 | } | |
123 | ||
124 | static inline void atomic_set(atomic_t *p, int v) | |
125 | { | |
126 | p->counter=v; | |
127 | } | |
128 | ||
129 | static inline void atomic_inc(atomic_t *p) | |
130 | { | |
131 | p->counter++; | |
132 | } | |
133 | ||
134 | static int atomic_read(atomic_t *p) | |
135 | { | |
136 | return p->counter; | |
137 | } | |
c66d2821 | 138 | |
bb07823d PMF |
139 | #define atomic_long_t atomic_t |
140 | #define atomic_long_set atomic_set | |
141 | #define atomic_long_read atomic_read | |
142 | ||
143 | #include "asm.h" | |
144 | ||
145 | #define __xg(x) ((volatile long *)(x)) | |
146 | ||
147 | #define cmpxchg(ptr, o, n) \ | |
148 | ((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o), \ | |
149 | (unsigned long)(n), sizeof(*(ptr)))) | |
150 | ||
151 | static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old, | |
152 | unsigned long new, int size) | |
153 | { | |
154 | unsigned long prev; | |
155 | switch (size) { | |
156 | case 1: | |
157 | asm volatile("lock cmpxchgb %b1,%2" | |
158 | : "=a"(prev) | |
159 | : "q"(new), "m"(*__xg(ptr)), "0"(old) | |
160 | : "memory"); | |
161 | return prev; | |
162 | case 2: | |
163 | asm volatile("lock cmpxchgw %w1,%2" | |
164 | : "=a"(prev) | |
165 | : "r"(new), "m"(*__xg(ptr)), "0"(old) | |
166 | : "memory"); | |
167 | return prev; | |
168 | case 4: | |
169 | asm volatile("lock cmpxchgl %k1,%2" | |
170 | : "=a"(prev) | |
171 | : "r"(new), "m"(*__xg(ptr)), "0"(old) | |
172 | : "memory"); | |
173 | return prev; | |
174 | case 8: | |
175 | asm volatile("lock cmpxchgq %1,%2" | |
176 | : "=a"(prev) | |
177 | : "r"(new), "m"(*__xg(ptr)), "0"(old) | |
178 | : "memory"); | |
179 | return prev; | |
180 | } | |
181 | return old; | |
182 | } | |
183 | ||
184 | #define local_cmpxchg cmpxchg | |
185 | #define atomic_long_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new))) | |
186 | ||
187 | ||
5f54827b PMF |
188 | /* LOCAL OPS */ |
189 | ||
bb07823d PMF |
190 | typedef int local_t; |
191 | ||
192 | static inline void local_inc(local_t *a) | |
193 | { | |
194 | (*a)++; | |
195 | } | |
196 | ||
197 | static inline void local_set(local_t *a, int v) | |
198 | { | |
199 | *a = v; | |
200 | } | |
201 | ||
202 | static inline void local_add(int v, local_t *a) | |
203 | { | |
204 | *a += v; | |
205 | } | |
206 | ||
207 | static int local_add_return(int v, local_t *a) | |
208 | { | |
209 | return *a += v; | |
210 | } | |
211 | ||
212 | static inline int local_read(local_t *a) | |
213 | { | |
214 | return *a; | |
215 | } | |
5f54827b PMF |
216 | |
217 | ||
218 | /* ATTRIBUTES */ | |
b6bf28ec | 219 | |
59b161cd | 220 | #define ____cacheline_aligned |
5f54827b PMF |
221 | #define __init |
222 | #define __exit | |
c66d2821 | 223 | |
b6bf28ec PMF |
224 | /* MATH */ |
225 | ||
226 | static inline unsigned int hweight32(unsigned int w) | |
227 | { | |
228 | unsigned int res = w - ((w >> 1) & 0x55555555); | |
229 | res = (res & 0x33333333) + ((res >> 2) & 0x33333333); | |
230 | res = (res + (res >> 4)) & 0x0F0F0F0F; | |
231 | res = res + (res >> 8); | |
232 | return (res + (res >> 16)) & 0x000000FF; | |
233 | } | |
234 | ||
235 | static inline int fls(int x) | |
236 | { | |
237 | int r; | |
238 | //ust// #ifdef CONFIG_X86_CMOV | |
239 | asm("bsrl %1,%0\n\t" | |
240 | "cmovzl %2,%0" | |
241 | : "=&r" (r) : "rm" (x), "rm" (-1)); | |
242 | //ust// #else | |
243 | //ust// asm("bsrl %1,%0\n\t" | |
244 | //ust// "jnz 1f\n\t" | |
245 | //ust// "movl $-1,%0\n" | |
246 | //ust// "1:" : "=r" (r) : "rm" (x)); | |
247 | //ust// #endif | |
248 | return r + 1; | |
249 | } | |
250 | ||
251 | static __inline__ int get_count_order(unsigned int count) | |
252 | { | |
253 | int order; | |
254 | ||
255 | order = fls(count) - 1; | |
256 | if (count & (count - 1)) | |
257 | order++; | |
258 | return order; | |
259 | } | |
260 | ||
261 | ||
5f54827b PMF |
262 | |
263 | ||
264 | #include <unistd.h> | |
265 | ||
266 | #define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1) | |
267 | #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) | |
268 | #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE) | |
269 | #define PAGE_SIZE sysconf(_SC_PAGE_SIZE) | |
bb07823d | 270 | #define PAGE_MASK (PAGE_SIZE-1) |
5f54827b PMF |
271 | |
272 | ||
273 | ||
274 | ||
b6bf28ec PMF |
275 | /* ARRAYS */ |
276 | ||
277 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) | |
278 | ||
279 | /* TRACE CLOCK */ | |
280 | ||
281 | static inline u64 trace_clock_read64(void) | |
282 | { | |
283 | return 0LL; | |
284 | } | |
285 | ||
286 | static inline unsigned int trace_clock_frequency(void) | |
287 | { | |
288 | return 0LL; | |
289 | } | |
290 | ||
291 | static inline u32 trace_clock_freq_scale(void) | |
292 | { | |
293 | return 0; | |
294 | } | |
295 | ||
c66d2821 | 296 | #endif /* KERNELCOMPAT_H */ |