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-rw-r--r--include/asm-sh/uaccess_64.h206
1 files changed, 0 insertions, 206 deletions
diff --git a/include/asm-sh/uaccess_64.h b/include/asm-sh/uaccess_64.h
index a9b68d094844..81b3d515fcb3 100644
--- a/include/asm-sh/uaccess_64.h
+++ b/include/asm-sh/uaccess_64.h
@@ -20,87 +20,6 @@
20 * License. See the file "COPYING" in the main directory of this archive 20 * License. See the file "COPYING" in the main directory of this archive
21 * for more details. 21 * for more details.
22 */ 22 */
23#include <linux/errno.h>
24#include <linux/sched.h>
25
26#define VERIFY_READ 0
27#define VERIFY_WRITE 1
28
29/*
30 * The fs value determines whether argument validity checking should be
31 * performed or not. If get_fs() == USER_DS, checking is performed, with
32 * get_fs() == KERNEL_DS, checking is bypassed.
33 *
34 * For historical reasons (Data Segment Register?), these macros are misnamed.
35 */
36
37#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
38
39#define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFF)
40#define USER_DS MAKE_MM_SEG(0x80000000)
41
42#define get_ds() (KERNEL_DS)
43#define get_fs() (current_thread_info()->addr_limit)
44#define set_fs(x) (current_thread_info()->addr_limit=(x))
45
46#define segment_eq(a,b) ((a).seg == (b).seg)
47
48#define __addr_ok(addr) ((unsigned long)(addr) < (current_thread_info()->addr_limit.seg))
49
50/*
51 * Uhhuh, this needs 33-bit arithmetic. We have a carry..
52 *
53 * sum := addr + size; carry? --> flag = true;
54 * if (sum >= addr_limit) flag = true;
55 */
56#define __range_ok(addr,size) (((unsigned long) (addr) + (size) < (current_thread_info()->addr_limit.seg)) ? 0 : 1)
57
58#define access_ok(type,addr,size) (__range_ok(addr,size) == 0)
59#define __access_ok(addr,size) (__range_ok(addr,size) == 0)
60
61/*
62 * Uh, these should become the main single-value transfer routines ...
63 * They automatically use the right size if we just have the right
64 * pointer type ...
65 *
66 * As MIPS uses the same address space for kernel and user data, we
67 * can just do these as direct assignments.
68 *
69 * Careful to not
70 * (a) re-use the arguments for side effects (sizeof is ok)
71 * (b) require any knowledge of processes at this stage
72 */
73#define put_user(x,ptr) __put_user_check((x),(ptr),sizeof(*(ptr)))
74#define get_user(x,ptr) __get_user_check((x),(ptr),sizeof(*(ptr)))
75
76/*
77 * The "__xxx" versions do not do address space checking, useful when
78 * doing multiple accesses to the same area (the user has to do the
79 * checks by hand with "access_ok()")
80 */
81#define __put_user(x,ptr) __put_user_nocheck((x),(ptr),sizeof(*(ptr)))
82#define __get_user(x,ptr) __get_user_nocheck((x),(ptr),sizeof(*(ptr)))
83
84/*
85 * The "xxx_ret" versions return constant specified in third argument, if
86 * something bad happens. These macros can be optimized for the
87 * case of just returning from the function xxx_ret is used.
88 */
89
90#define put_user_ret(x,ptr,ret) ({ \
91if (put_user(x,ptr)) return ret; })
92
93#define get_user_ret(x,ptr,ret) ({ \
94if (get_user(x,ptr)) return ret; })
95
96#define __put_user_ret(x,ptr,ret) ({ \
97if (__put_user(x,ptr)) return ret; })
98
99#define __get_user_ret(x,ptr,ret) ({ \
100if (__get_user(x,ptr)) return ret; })
101
102struct __large_struct { unsigned long buf[100]; };
103#define __m(x) (*(struct __large_struct *)(x))
104 23
105#define __get_user_size(x,ptr,size,retval) \ 24#define __get_user_size(x,ptr,size,retval) \
106do { \ 25do { \
@@ -124,26 +43,6 @@ do { \
124 } \ 43 } \
125} while (0) 44} while (0)
126 45
127#define __get_user_nocheck(x,ptr,size) \
128({ \
129 long __gu_err, __gu_val; \
130 __get_user_size((void *)&__gu_val, (long)(ptr), \
131 (size), __gu_err); \
132 (x) = (__typeof__(*(ptr)))__gu_val; \
133 __gu_err; \
134})
135
136#define __get_user_check(x,ptr,size) \
137({ \
138 long __gu_addr = (long)(ptr); \
139 long __gu_err = -EFAULT, __gu_val; \
140 if (__access_ok(__gu_addr, (size))) \
141 __get_user_size((void *)&__gu_val, __gu_addr, \
142 (size), __gu_err); \
143 (x) = (__typeof__(*(ptr))) __gu_val; \
144 __gu_err; \
145})
146
147extern long __get_user_asm_b(void *, long); 46extern long __get_user_asm_b(void *, long);
148extern long __get_user_asm_w(void *, long); 47extern long __get_user_asm_w(void *, long);
149extern long __get_user_asm_l(void *, long); 48extern long __get_user_asm_l(void *, long);
@@ -171,115 +70,10 @@ do { \
171 } \ 70 } \
172} while (0) 71} while (0)
173 72
174#define __put_user_nocheck(x,ptr,size) \
175({ \
176 long __pu_err; \
177 __typeof__(*(ptr)) __pu_val = (x); \
178 __put_user_size((void *)&__pu_val, (long)(ptr), (size), __pu_err); \
179 __pu_err; \
180})
181
182#define __put_user_check(x,ptr,size) \
183({ \
184 long __pu_err = -EFAULT; \
185 long __pu_addr = (long)(ptr); \
186 __typeof__(*(ptr)) __pu_val = (x); \
187 \
188 if (__access_ok(__pu_addr, (size))) \
189 __put_user_size((void *)&__pu_val, __pu_addr, (size), __pu_err);\
190 __pu_err; \
191})
192
193extern long __put_user_asm_b(void *, long); 73extern long __put_user_asm_b(void *, long);
194extern long __put_user_asm_w(void *, long); 74extern long __put_user_asm_w(void *, long);
195extern long __put_user_asm_l(void *, long); 75extern long __put_user_asm_l(void *, long);
196extern long __put_user_asm_q(void *, long); 76extern long __put_user_asm_q(void *, long);
197extern void __put_user_unknown(void); 77extern void __put_user_unknown(void);
198 78
199
200/* Generic arbitrary sized copy. */
201/* Return the number of bytes NOT copied */
202/* XXX: should be such that: 4byte and the rest. */
203extern __kernel_size_t __copy_user(void *__to, const void *__from, __kernel_size_t __n);
204
205#define copy_to_user_ret(to,from,n,retval) ({ \
206if (copy_to_user(to,from,n)) \
207 return retval; \
208})
209
210#define __copy_to_user(to,from,n) \
211 __copy_user((void *)(to), \
212 (void *)(from), n)
213
214#define __copy_to_user_ret(to,from,n,retval) ({ \
215if (__copy_to_user(to,from,n)) \
216 return retval; \
217})
218
219#define copy_from_user_ret(to,from,n,retval) ({ \
220if (copy_from_user(to,from,n)) \
221 return retval; \
222})
223
224#define __copy_from_user(to,from,n) \
225 __copy_user((void *)(to), \
226 (void *)(from), n)
227
228#define __copy_from_user_ret(to,from,n,retval) ({ \
229if (__copy_from_user(to,from,n)) \
230 return retval; \
231})
232
233#define __copy_to_user_inatomic __copy_to_user
234#define __copy_from_user_inatomic __copy_from_user
235
236/* XXX: Not sure it works well..
237 should be such that: 4byte clear and the rest. */
238extern __kernel_size_t __clear_user(void *addr, __kernel_size_t size);
239
240#define clear_user(addr,n) ({ \
241void * __cl_addr = (addr); \
242unsigned long __cl_size = (n); \
243if (__cl_size && __access_ok(((unsigned long)(__cl_addr)), __cl_size)) \
244__cl_size = __clear_user(__cl_addr, __cl_size); \
245__cl_size; })
246
247extern int __strncpy_from_user(unsigned long __dest, unsigned long __src, int __count);
248
249#define strncpy_from_user(dest,src,count) ({ \
250unsigned long __sfu_src = (unsigned long) (src); \
251int __sfu_count = (int) (count); \
252long __sfu_res = -EFAULT; \
253if(__access_ok(__sfu_src, __sfu_count)) { \
254__sfu_res = __strncpy_from_user((unsigned long) (dest), __sfu_src, __sfu_count); \
255} __sfu_res; })
256
257#define strlen_user(str) strnlen_user(str, ~0UL >> 1)
258
259/*
260 * Return the size of a string (including the ending 0!)
261 */
262extern long __strnlen_user(const char *__s, long __n);
263
264static inline long strnlen_user(const char *s, long n)
265{
266 if (!__addr_ok(s))
267 return 0;
268 else
269 return __strnlen_user(s, n);
270}
271
272struct exception_table_entry
273{
274 unsigned long insn, fixup;
275};
276
277#ifdef CONFIG_MMU
278#define ARCH_HAS_SEARCH_EXTABLE
279#endif
280
281/* Returns 0 if exception not found and fixup.unit otherwise. */
282extern unsigned long search_exception_table(unsigned long addr);
283extern const struct exception_table_entry *search_exception_tables (unsigned long addr);
284
285#endif /* __ASM_SH_UACCESS_64_H */ 79#endif /* __ASM_SH_UACCESS_64_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-25 03:14:24 -0500