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2df5e8bc SR |
1 | #ifndef _ARCH_POWERPC_UACCESS_H |
2 | #define _ARCH_POWERPC_UACCESS_H | |
3 | ||
4 | #ifdef __KERNEL__ | |
5 | #ifndef __ASSEMBLY__ | |
6 | ||
7 | #include <linux/sched.h> | |
8 | #include <linux/errno.h> | |
551c3c04 | 9 | #include <asm/asm-compat.h> |
2df5e8bc | 10 | #include <asm/processor.h> |
6bfd93c3 | 11 | #include <asm/page.h> |
2df5e8bc SR |
12 | |
13 | #define VERIFY_READ 0 | |
14 | #define VERIFY_WRITE 1 | |
15 | ||
16 | /* | |
17 | * The fs value determines whether argument validity checking should be | |
18 | * performed or not. If get_fs() == USER_DS, checking is performed, with | |
19 | * get_fs() == KERNEL_DS, checking is bypassed. | |
20 | * | |
21 | * For historical reasons, these macros are grossly misnamed. | |
22 | * | |
23 | * The fs/ds values are now the highest legal address in the "segment". | |
24 | * This simplifies the checking in the routines below. | |
25 | */ | |
26 | ||
27 | #define MAKE_MM_SEG(s) ((mm_segment_t) { (s) }) | |
28 | ||
5015b494 | 29 | #define KERNEL_DS MAKE_MM_SEG(~0UL) |
2df5e8bc | 30 | #ifdef __powerpc64__ |
5015b494 SR |
31 | /* We use TASK_SIZE_USER64 as TASK_SIZE is not constant */ |
32 | #define USER_DS MAKE_MM_SEG(TASK_SIZE_USER64 - 1) | |
2df5e8bc | 33 | #else |
2df5e8bc SR |
34 | #define USER_DS MAKE_MM_SEG(TASK_SIZE - 1) |
35 | #endif | |
36 | ||
37 | #define get_ds() (KERNEL_DS) | |
38 | #define get_fs() (current->thread.fs) | |
39 | #define set_fs(val) (current->thread.fs = (val)) | |
40 | ||
41 | #define segment_eq(a, b) ((a).seg == (b).seg) | |
42 | ||
43 | #ifdef __powerpc64__ | |
44 | /* | |
5015b494 SR |
45 | * This check is sufficient because there is a large enough |
46 | * gap between user addresses and the kernel addresses | |
2df5e8bc SR |
47 | */ |
48 | #define __access_ok(addr, size, segment) \ | |
5015b494 | 49 | (((addr) <= (segment).seg) && ((size) <= (segment).seg)) |
2df5e8bc SR |
50 | |
51 | #else | |
52 | ||
53 | #define __access_ok(addr, size, segment) \ | |
54 | (((addr) <= (segment).seg) && \ | |
55 | (((size) == 0) || (((size) - 1) <= ((segment).seg - (addr))))) | |
56 | ||
57 | #endif | |
58 | ||
59 | #define access_ok(type, addr, size) \ | |
60 | (__chk_user_ptr(addr), \ | |
61 | __access_ok((__force unsigned long)(addr), (size), get_fs())) | |
62 | ||
63 | /* | |
64 | * The exception table consists of pairs of addresses: the first is the | |
65 | * address of an instruction that is allowed to fault, and the second is | |
66 | * the address at which the program should continue. No registers are | |
67 | * modified, so it is entirely up to the continuation code to figure out | |
68 | * what to do. | |
69 | * | |
70 | * All the routines below use bits of fixup code that are out of line | |
71 | * with the main instruction path. This means when everything is well, | |
72 | * we don't even have to jump over them. Further, they do not intrude | |
73 | * on our cache or tlb entries. | |
74 | */ | |
75 | ||
76 | struct exception_table_entry { | |
77 | unsigned long insn; | |
78 | unsigned long fixup; | |
79 | }; | |
80 | ||
81 | /* | |
82 | * These are the main single-value transfer routines. They automatically | |
83 | * use the right size if we just have the right pointer type. | |
84 | * | |
85 | * This gets kind of ugly. We want to return _two_ values in "get_user()" | |
86 | * and yet we don't want to do any pointers, because that is too much | |
87 | * of a performance impact. Thus we have a few rather ugly macros here, | |
88 | * and hide all the ugliness from the user. | |
89 | * | |
90 | * The "__xxx" versions of the user access functions are versions that | |
91 | * do not verify the address space, that must have been done previously | |
92 | * with a separate "access_ok()" call (this is used when we do multiple | |
93 | * accesses to the same area of user memory). | |
94 | * | |
95 | * As we use the same address space for kernel and user data on the | |
96 | * PowerPC, we can just do these as direct assignments. (Of course, the | |
97 | * exception handling means that it's no longer "just"...) | |
98 | * | |
99 | * The "user64" versions of the user access functions are versions that | |
100 | * allow access of 64-bit data. The "get_user" functions do not | |
101 | * properly handle 64-bit data because the value gets down cast to a long. | |
102 | * The "put_user" functions already handle 64-bit data properly but we add | |
103 | * "user64" versions for completeness | |
104 | */ | |
105 | #define get_user(x, ptr) \ | |
106 | __get_user_check((x), (ptr), sizeof(*(ptr))) | |
107 | #define put_user(x, ptr) \ | |
108 | __put_user_check((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr))) | |
109 | ||
110 | #define __get_user(x, ptr) \ | |
111 | __get_user_nocheck((x), (ptr), sizeof(*(ptr))) | |
112 | #define __put_user(x, ptr) \ | |
113 | __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr))) | |
e68c825b | 114 | |
2df5e8bc SR |
115 | #ifndef __powerpc64__ |
116 | #define __get_user64(x, ptr) \ | |
117 | __get_user64_nocheck((x), (ptr), sizeof(*(ptr))) | |
118 | #define __put_user64(x, ptr) __put_user(x, ptr) | |
119 | #endif | |
120 | ||
e68c825b BH |
121 | #define __get_user_inatomic(x, ptr) \ |
122 | __get_user_nosleep((x), (ptr), sizeof(*(ptr))) | |
123 | #define __put_user_inatomic(x, ptr) \ | |
124 | __put_user_nosleep((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr))) | |
125 | ||
2df5e8bc SR |
126 | #define __get_user_unaligned __get_user |
127 | #define __put_user_unaligned __put_user | |
2df5e8bc SR |
128 | |
129 | extern long __put_user_bad(void); | |
130 | ||
2df5e8bc SR |
131 | /* |
132 | * We don't tell gcc that we are accessing memory, but this is OK | |
133 | * because we do not write to any memory gcc knows about, so there | |
134 | * are no aliasing issues. | |
135 | */ | |
136 | #define __put_user_asm(x, addr, err, op) \ | |
137 | __asm__ __volatile__( \ | |
138 | "1: " op " %1,0(%2) # put_user\n" \ | |
139 | "2:\n" \ | |
140 | ".section .fixup,\"ax\"\n" \ | |
141 | "3: li %0,%3\n" \ | |
142 | " b 2b\n" \ | |
143 | ".previous\n" \ | |
144 | ".section __ex_table,\"a\"\n" \ | |
551c3c04 | 145 | PPC_LONG_ALIGN "\n" \ |
3ddfbcf1 | 146 | PPC_LONG "1b,3b\n" \ |
2df5e8bc SR |
147 | ".previous" \ |
148 | : "=r" (err) \ | |
551c3c04 | 149 | : "r" (x), "b" (addr), "i" (-EFAULT), "0" (err)) |
2df5e8bc | 150 | |
5015b494 SR |
151 | #ifdef __powerpc64__ |
152 | #define __put_user_asm2(x, ptr, retval) \ | |
153 | __put_user_asm(x, ptr, retval, "std") | |
154 | #else /* __powerpc64__ */ | |
2df5e8bc SR |
155 | #define __put_user_asm2(x, addr, err) \ |
156 | __asm__ __volatile__( \ | |
157 | "1: stw %1,0(%2)\n" \ | |
158 | "2: stw %1+1,4(%2)\n" \ | |
159 | "3:\n" \ | |
160 | ".section .fixup,\"ax\"\n" \ | |
161 | "4: li %0,%3\n" \ | |
162 | " b 3b\n" \ | |
163 | ".previous\n" \ | |
164 | ".section __ex_table,\"a\"\n" \ | |
551c3c04 | 165 | PPC_LONG_ALIGN "\n" \ |
3ddfbcf1 DG |
166 | PPC_LONG "1b,4b\n" \ |
167 | PPC_LONG "2b,4b\n" \ | |
2df5e8bc SR |
168 | ".previous" \ |
169 | : "=r" (err) \ | |
551c3c04 | 170 | : "r" (x), "b" (addr), "i" (-EFAULT), "0" (err)) |
2df5e8bc SR |
171 | #endif /* __powerpc64__ */ |
172 | ||
173 | #define __put_user_size(x, ptr, size, retval) \ | |
174 | do { \ | |
175 | retval = 0; \ | |
176 | switch (size) { \ | |
177 | case 1: __put_user_asm(x, ptr, retval, "stb"); break; \ | |
178 | case 2: __put_user_asm(x, ptr, retval, "sth"); break; \ | |
179 | case 4: __put_user_asm(x, ptr, retval, "stw"); break; \ | |
180 | case 8: __put_user_asm2(x, ptr, retval); break; \ | |
181 | default: __put_user_bad(); \ | |
182 | } \ | |
183 | } while (0) | |
184 | ||
185 | #define __put_user_nocheck(x, ptr, size) \ | |
186 | ({ \ | |
187 | long __pu_err; \ | |
6bfd93c3 PM |
188 | __typeof__(*(ptr)) __user *__pu_addr = (ptr); \ |
189 | if (!is_kernel_addr((unsigned long)__pu_addr)) \ | |
190 | might_sleep(); \ | |
2df5e8bc | 191 | __chk_user_ptr(ptr); \ |
6bfd93c3 | 192 | __put_user_size((x), __pu_addr, (size), __pu_err); \ |
2df5e8bc SR |
193 | __pu_err; \ |
194 | }) | |
195 | ||
196 | #define __put_user_check(x, ptr, size) \ | |
197 | ({ \ | |
198 | long __pu_err = -EFAULT; \ | |
199 | __typeof__(*(ptr)) __user *__pu_addr = (ptr); \ | |
200 | might_sleep(); \ | |
201 | if (access_ok(VERIFY_WRITE, __pu_addr, size)) \ | |
202 | __put_user_size((x), __pu_addr, (size), __pu_err); \ | |
203 | __pu_err; \ | |
204 | }) | |
205 | ||
e68c825b BH |
206 | #define __put_user_nosleep(x, ptr, size) \ |
207 | ({ \ | |
208 | long __pu_err; \ | |
209 | __typeof__(*(ptr)) __user *__pu_addr = (ptr); \ | |
210 | __chk_user_ptr(ptr); \ | |
211 | __put_user_size((x), __pu_addr, (size), __pu_err); \ | |
212 | __pu_err; \ | |
213 | }) | |
214 | ||
215 | ||
2df5e8bc SR |
216 | extern long __get_user_bad(void); |
217 | ||
218 | #define __get_user_asm(x, addr, err, op) \ | |
219 | __asm__ __volatile__( \ | |
5015b494 | 220 | "1: "op" %1,0(%2) # get_user\n" \ |
2df5e8bc SR |
221 | "2:\n" \ |
222 | ".section .fixup,\"ax\"\n" \ | |
223 | "3: li %0,%3\n" \ | |
224 | " li %1,0\n" \ | |
225 | " b 2b\n" \ | |
226 | ".previous\n" \ | |
227 | ".section __ex_table,\"a\"\n" \ | |
551c3c04 | 228 | PPC_LONG_ALIGN "\n" \ |
3ddfbcf1 | 229 | PPC_LONG "1b,3b\n" \ |
2df5e8bc SR |
230 | ".previous" \ |
231 | : "=r" (err), "=r" (x) \ | |
551c3c04 | 232 | : "b" (addr), "i" (-EFAULT), "0" (err)) |
2df5e8bc | 233 | |
5015b494 SR |
234 | #ifdef __powerpc64__ |
235 | #define __get_user_asm2(x, addr, err) \ | |
236 | __get_user_asm(x, addr, err, "ld") | |
237 | #else /* __powerpc64__ */ | |
238 | #define __get_user_asm2(x, addr, err) \ | |
2df5e8bc SR |
239 | __asm__ __volatile__( \ |
240 | "1: lwz %1,0(%2)\n" \ | |
241 | "2: lwz %1+1,4(%2)\n" \ | |
242 | "3:\n" \ | |
243 | ".section .fixup,\"ax\"\n" \ | |
244 | "4: li %0,%3\n" \ | |
245 | " li %1,0\n" \ | |
246 | " li %1+1,0\n" \ | |
247 | " b 3b\n" \ | |
248 | ".previous\n" \ | |
249 | ".section __ex_table,\"a\"\n" \ | |
551c3c04 | 250 | PPC_LONG_ALIGN "\n" \ |
3ddfbcf1 DG |
251 | PPC_LONG "1b,4b\n" \ |
252 | PPC_LONG "2b,4b\n" \ | |
2df5e8bc SR |
253 | ".previous" \ |
254 | : "=r" (err), "=&r" (x) \ | |
551c3c04 | 255 | : "b" (addr), "i" (-EFAULT), "0" (err)) |
2df5e8bc SR |
256 | #endif /* __powerpc64__ */ |
257 | ||
258 | #define __get_user_size(x, ptr, size, retval) \ | |
259 | do { \ | |
260 | retval = 0; \ | |
261 | __chk_user_ptr(ptr); \ | |
5015b494 SR |
262 | if (size > sizeof(x)) \ |
263 | (x) = __get_user_bad(); \ | |
2df5e8bc SR |
264 | switch (size) { \ |
265 | case 1: __get_user_asm(x, ptr, retval, "lbz"); break; \ | |
266 | case 2: __get_user_asm(x, ptr, retval, "lhz"); break; \ | |
267 | case 4: __get_user_asm(x, ptr, retval, "lwz"); break; \ | |
268 | case 8: __get_user_asm2(x, ptr, retval); break; \ | |
269 | default: (x) = __get_user_bad(); \ | |
270 | } \ | |
271 | } while (0) | |
272 | ||
273 | #define __get_user_nocheck(x, ptr, size) \ | |
274 | ({ \ | |
275 | long __gu_err; \ | |
276 | unsigned long __gu_val; \ | |
6bfd93c3 | 277 | const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \ |
2df5e8bc | 278 | __chk_user_ptr(ptr); \ |
6bfd93c3 PM |
279 | if (!is_kernel_addr((unsigned long)__gu_addr)) \ |
280 | might_sleep(); \ | |
281 | __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \ | |
2df5e8bc SR |
282 | (x) = (__typeof__(*(ptr)))__gu_val; \ |
283 | __gu_err; \ | |
284 | }) | |
285 | ||
286 | #ifndef __powerpc64__ | |
287 | #define __get_user64_nocheck(x, ptr, size) \ | |
288 | ({ \ | |
289 | long __gu_err; \ | |
290 | long long __gu_val; \ | |
6bfd93c3 | 291 | const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \ |
2df5e8bc | 292 | __chk_user_ptr(ptr); \ |
6bfd93c3 PM |
293 | if (!is_kernel_addr((unsigned long)__gu_addr)) \ |
294 | might_sleep(); \ | |
295 | __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \ | |
2df5e8bc SR |
296 | (x) = (__typeof__(*(ptr)))__gu_val; \ |
297 | __gu_err; \ | |
298 | }) | |
299 | #endif /* __powerpc64__ */ | |
300 | ||
301 | #define __get_user_check(x, ptr, size) \ | |
302 | ({ \ | |
303 | long __gu_err = -EFAULT; \ | |
304 | unsigned long __gu_val = 0; \ | |
305 | const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \ | |
5015b494 | 306 | might_sleep(); \ |
2df5e8bc SR |
307 | if (access_ok(VERIFY_READ, __gu_addr, (size))) \ |
308 | __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \ | |
309 | (x) = (__typeof__(*(ptr)))__gu_val; \ | |
310 | __gu_err; \ | |
311 | }) | |
312 | ||
e68c825b BH |
313 | #define __get_user_nosleep(x, ptr, size) \ |
314 | ({ \ | |
315 | long __gu_err; \ | |
316 | unsigned long __gu_val; \ | |
317 | const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \ | |
318 | __chk_user_ptr(ptr); \ | |
319 | __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \ | |
320 | (x) = (__typeof__(*(ptr)))__gu_val; \ | |
321 | __gu_err; \ | |
322 | }) | |
323 | ||
324 | ||
2df5e8bc SR |
325 | /* more complex routines */ |
326 | ||
327 | extern unsigned long __copy_tofrom_user(void __user *to, | |
328 | const void __user *from, unsigned long size); | |
329 | ||
330 | #ifndef __powerpc64__ | |
5015b494 | 331 | |
4cfbdfff | 332 | static inline unsigned long copy_from_user(void *to, |
5015b494 | 333 | const void __user *from, unsigned long n) |
2df5e8bc SR |
334 | { |
335 | unsigned long over; | |
336 | ||
337 | if (access_ok(VERIFY_READ, from, n)) | |
338 | return __copy_tofrom_user((__force void __user *)to, from, n); | |
339 | if ((unsigned long)from < TASK_SIZE) { | |
340 | over = (unsigned long)from + n - TASK_SIZE; | |
341 | return __copy_tofrom_user((__force void __user *)to, from, | |
342 | n - over) + over; | |
343 | } | |
344 | return n; | |
345 | } | |
346 | ||
4cfbdfff | 347 | static inline unsigned long copy_to_user(void __user *to, |
5015b494 | 348 | const void *from, unsigned long n) |
2df5e8bc SR |
349 | { |
350 | unsigned long over; | |
351 | ||
352 | if (access_ok(VERIFY_WRITE, to, n)) | |
353 | return __copy_tofrom_user(to, (__force void __user *)from, n); | |
354 | if ((unsigned long)to < TASK_SIZE) { | |
355 | over = (unsigned long)to + n - TASK_SIZE; | |
356 | return __copy_tofrom_user(to, (__force void __user *)from, | |
357 | n - over) + over; | |
358 | } | |
359 | return n; | |
360 | } | |
361 | ||
362 | #else /* __powerpc64__ */ | |
363 | ||
5015b494 SR |
364 | #define __copy_in_user(to, from, size) \ |
365 | __copy_tofrom_user((to), (from), (size)) | |
366 | ||
367 | extern unsigned long copy_from_user(void *to, const void __user *from, | |
368 | unsigned long n); | |
369 | extern unsigned long copy_to_user(void __user *to, const void *from, | |
370 | unsigned long n); | |
371 | extern unsigned long copy_in_user(void __user *to, const void __user *from, | |
372 | unsigned long n); | |
373 | ||
48fe4871 SR |
374 | #endif /* __powerpc64__ */ |
375 | ||
5015b494 SR |
376 | static inline unsigned long __copy_from_user_inatomic(void *to, |
377 | const void __user *from, unsigned long n) | |
2df5e8bc SR |
378 | { |
379 | if (__builtin_constant_p(n) && (n <= 8)) { | |
9c8387af | 380 | unsigned long ret = 1; |
2df5e8bc SR |
381 | |
382 | switch (n) { | |
383 | case 1: | |
384 | __get_user_size(*(u8 *)to, from, 1, ret); | |
385 | break; | |
386 | case 2: | |
387 | __get_user_size(*(u16 *)to, from, 2, ret); | |
388 | break; | |
389 | case 4: | |
390 | __get_user_size(*(u32 *)to, from, 4, ret); | |
391 | break; | |
392 | case 8: | |
393 | __get_user_size(*(u64 *)to, from, 8, ret); | |
394 | break; | |
395 | } | |
48fe4871 SR |
396 | if (ret == 0) |
397 | return 0; | |
2df5e8bc | 398 | } |
48fe4871 | 399 | return __copy_tofrom_user((__force void __user *)to, from, n); |
2df5e8bc SR |
400 | } |
401 | ||
5015b494 SR |
402 | static inline unsigned long __copy_to_user_inatomic(void __user *to, |
403 | const void *from, unsigned long n) | |
2df5e8bc SR |
404 | { |
405 | if (__builtin_constant_p(n) && (n <= 8)) { | |
9c8387af | 406 | unsigned long ret = 1; |
2df5e8bc SR |
407 | |
408 | switch (n) { | |
409 | case 1: | |
410 | __put_user_size(*(u8 *)from, (u8 __user *)to, 1, ret); | |
411 | break; | |
412 | case 2: | |
413 | __put_user_size(*(u16 *)from, (u16 __user *)to, 2, ret); | |
414 | break; | |
415 | case 4: | |
416 | __put_user_size(*(u32 *)from, (u32 __user *)to, 4, ret); | |
417 | break; | |
418 | case 8: | |
419 | __put_user_size(*(u64 *)from, (u64 __user *)to, 8, ret); | |
420 | break; | |
421 | } | |
48fe4871 SR |
422 | if (ret == 0) |
423 | return 0; | |
2df5e8bc | 424 | } |
48fe4871 | 425 | return __copy_tofrom_user(to, (__force const void __user *)from, n); |
2df5e8bc SR |
426 | } |
427 | ||
5015b494 SR |
428 | static inline unsigned long __copy_from_user(void *to, |
429 | const void __user *from, unsigned long size) | |
2df5e8bc SR |
430 | { |
431 | might_sleep(); | |
2df5e8bc | 432 | return __copy_from_user_inatomic(to, from, size); |
2df5e8bc SR |
433 | } |
434 | ||
5015b494 SR |
435 | static inline unsigned long __copy_to_user(void __user *to, |
436 | const void *from, unsigned long size) | |
2df5e8bc SR |
437 | { |
438 | might_sleep(); | |
2df5e8bc | 439 | return __copy_to_user_inatomic(to, from, size); |
2df5e8bc SR |
440 | } |
441 | ||
2df5e8bc SR |
442 | extern unsigned long __clear_user(void __user *addr, unsigned long size); |
443 | ||
444 | static inline unsigned long clear_user(void __user *addr, unsigned long size) | |
445 | { | |
446 | might_sleep(); | |
447 | if (likely(access_ok(VERIFY_WRITE, addr, size))) | |
448 | return __clear_user(addr, size); | |
2df5e8bc SR |
449 | if ((unsigned long)addr < TASK_SIZE) { |
450 | unsigned long over = (unsigned long)addr + size - TASK_SIZE; | |
451 | return __clear_user(addr, size - over) + over; | |
452 | } | |
2df5e8bc SR |
453 | return size; |
454 | } | |
455 | ||
456 | extern int __strncpy_from_user(char *dst, const char __user *src, long count); | |
457 | ||
458 | static inline long strncpy_from_user(char *dst, const char __user *src, | |
459 | long count) | |
460 | { | |
461 | might_sleep(); | |
462 | if (likely(access_ok(VERIFY_READ, src, 1))) | |
463 | return __strncpy_from_user(dst, src, count); | |
464 | return -EFAULT; | |
465 | } | |
466 | ||
467 | /* | |
468 | * Return the size of a string (including the ending 0) | |
469 | * | |
470 | * Return 0 for error | |
471 | */ | |
2df5e8bc | 472 | extern int __strnlen_user(const char __user *str, long len, unsigned long top); |
2df5e8bc SR |
473 | |
474 | /* | |
475 | * Returns the length of the string at str (including the null byte), | |
476 | * or 0 if we hit a page we can't access, | |
477 | * or something > len if we didn't find a null byte. | |
478 | * | |
479 | * The `top' parameter to __strnlen_user is to make sure that | |
480 | * we can never overflow from the user area into kernel space. | |
481 | */ | |
482 | static inline int strnlen_user(const char __user *str, long len) | |
483 | { | |
2df5e8bc SR |
484 | unsigned long top = current->thread.fs.seg; |
485 | ||
486 | if ((unsigned long)str > top) | |
487 | return 0; | |
488 | return __strnlen_user(str, len, top); | |
2df5e8bc SR |
489 | } |
490 | ||
491 | #define strlen_user(str) strnlen_user((str), 0x7ffffffe) | |
492 | ||
493 | #endif /* __ASSEMBLY__ */ | |
494 | #endif /* __KERNEL__ */ | |
495 | ||
496 | #endif /* _ARCH_POWERPC_UACCESS_H */ |