diff options
author | Sam Ravnborg <sam@ravnborg.org> | 2008-07-18 00:55:51 -0400 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-07-18 00:55:51 -0400 |
commit | f5e706ad886b6a5eb59637830110b09ccebf01c5 (patch) | |
tree | ea043a0a28e16a2ac6395c35d737f52698a165b7 /include/asm-sparc/uaccess.h | |
parent | 5e3609f60c09f0f15f71f80c6d7933b2c7be71a6 (diff) |
sparc: join the remaining header files
With this commit all sparc64 header files are moved to asm-sparc.
The remaining files (71 files) were too different to be trivially
merged so divide them up in a _32.h and a _64.h file which
are both included from the file with no bit size.
The following script were used:
cd include
FILES=`wc -l asm-sparc64/*h | grep -v '^ 1' | cut -b 20-`
for FILE in ${FILES}; do
echo $FILE:
BASE=`echo $FILE | cut -d '.' -f 1`
FN32=${BASE}_32.h
FN64=${BASE}_64.h
GUARD=___ASM_SPARC_`echo $BASE | tr '-' '_' | tr [:lower:] [:upper:]`_H
git mv asm-sparc/$FILE asm-sparc/$FN32
git mv asm-sparc64/$FILE asm-sparc/$FN64
echo git mv done
printf "#ifndef %s\n" $GUARD > asm-sparc/$FILE
printf "#define %s\n" $GUARD >> asm-sparc/$FILE
printf "#if defined(__sparc__) && defined(__arch64__)\n" >> asm-sparc/$FILE
printf "#include <asm-sparc/%s>\n" $FN64 >> asm-sparc/$FILE
printf "#else\n" >> asm-sparc/$FILE
printf "#include <asm-sparc/%s>\n" $FN32 >> asm-sparc/$FILE
printf "#endif\n" >> asm-sparc/$FILE
printf "#endif\n" >> asm-sparc/$FILE
git add asm-sparc/$FILE
echo new file done
printf "#include <asm-sparc/%s>\n" $FILE > asm-sparc64/$FILE
git add asm-sparc64/$FILE
echo sparc64 file done
done
The guard contains three '_' to avoid conflict with existing guards.
In additing the two Kbuild files are emptied to avoid breaking
headers_* targets.
We will reintroduce the exported header files when the necessary
kbuild changes are merged.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc/uaccess.h')
-rw-r--r-- | include/asm-sparc/uaccess.h | 342 |
1 files changed, 7 insertions, 335 deletions
diff --git a/include/asm-sparc/uaccess.h b/include/asm-sparc/uaccess.h index 47d5619d43fa..424facce5238 100644 --- a/include/asm-sparc/uaccess.h +++ b/include/asm-sparc/uaccess.h | |||
@@ -1,336 +1,8 @@ | |||
1 | /* | 1 | #ifndef ___ASM_SPARC_UACCESS_H |
2 | * uaccess.h: User space memore access functions. | 2 | #define ___ASM_SPARC_UACCESS_H |
3 | * | 3 | #if defined(__sparc__) && defined(__arch64__) |
4 | * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) | 4 | #include <asm-sparc/uaccess_64.h> |
5 | * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | 5 | #else |
6 | */ | 6 | #include <asm-sparc/uaccess_32.h> |
7 | #ifndef _ASM_UACCESS_H | 7 | #endif |
8 | #define _ASM_UACCESS_H | ||
9 | |||
10 | #ifdef __KERNEL__ | ||
11 | #include <linux/compiler.h> | ||
12 | #include <linux/sched.h> | ||
13 | #include <linux/string.h> | ||
14 | #include <linux/errno.h> | ||
15 | #include <asm/vac-ops.h> | ||
16 | #endif | 8 | #endif |
17 | |||
18 | #ifndef __ASSEMBLY__ | ||
19 | |||
20 | /* Sparc is not segmented, however we need to be able to fool access_ok() | ||
21 | * when doing system calls from kernel mode legitimately. | ||
22 | * | ||
23 | * "For historical reasons, these macros are grossly misnamed." -Linus | ||
24 | */ | ||
25 | |||
26 | #define KERNEL_DS ((mm_segment_t) { 0 }) | ||
27 | #define USER_DS ((mm_segment_t) { -1 }) | ||
28 | |||
29 | #define VERIFY_READ 0 | ||
30 | #define VERIFY_WRITE 1 | ||
31 | |||
32 | #define get_ds() (KERNEL_DS) | ||
33 | #define get_fs() (current->thread.current_ds) | ||
34 | #define set_fs(val) ((current->thread.current_ds) = (val)) | ||
35 | |||
36 | #define segment_eq(a,b) ((a).seg == (b).seg) | ||
37 | |||
38 | /* We have there a nice not-mapped page at PAGE_OFFSET - PAGE_SIZE, so that this test | ||
39 | * can be fairly lightweight. | ||
40 | * No one can read/write anything from userland in the kernel space by setting | ||
41 | * large size and address near to PAGE_OFFSET - a fault will break his intentions. | ||
42 | */ | ||
43 | #define __user_ok(addr, size) ({ (void)(size); (addr) < STACK_TOP; }) | ||
44 | #define __kernel_ok (segment_eq(get_fs(), KERNEL_DS)) | ||
45 | #define __access_ok(addr,size) (__user_ok((addr) & get_fs().seg,(size))) | ||
46 | #define access_ok(type, addr, size) \ | ||
47 | ({ (void)(type); __access_ok((unsigned long)(addr), size); }) | ||
48 | |||
49 | /* | ||
50 | * The exception table consists of pairs of addresses: the first is the | ||
51 | * address of an instruction that is allowed to fault, and the second is | ||
52 | * the address at which the program should continue. No registers are | ||
53 | * modified, so it is entirely up to the continuation code to figure out | ||
54 | * what to do. | ||
55 | * | ||
56 | * All the routines below use bits of fixup code that are out of line | ||
57 | * with the main instruction path. This means when everything is well, | ||
58 | * we don't even have to jump over them. Further, they do not intrude | ||
59 | * on our cache or tlb entries. | ||
60 | * | ||
61 | * There is a special way how to put a range of potentially faulting | ||
62 | * insns (like twenty ldd/std's with now intervening other instructions) | ||
63 | * You specify address of first in insn and 0 in fixup and in the next | ||
64 | * exception_table_entry you specify last potentially faulting insn + 1 | ||
65 | * and in fixup the routine which should handle the fault. | ||
66 | * That fixup code will get | ||
67 | * (faulting_insn_address - first_insn_in_the_range_address)/4 | ||
68 | * in %g2 (ie. index of the faulting instruction in the range). | ||
69 | */ | ||
70 | |||
71 | struct exception_table_entry | ||
72 | { | ||
73 | unsigned long insn, fixup; | ||
74 | }; | ||
75 | |||
76 | /* Returns 0 if exception not found and fixup otherwise. */ | ||
77 | extern unsigned long search_extables_range(unsigned long addr, unsigned long *g2); | ||
78 | |||
79 | extern void __ret_efault(void); | ||
80 | |||
81 | /* Uh, these should become the main single-value transfer routines.. | ||
82 | * They automatically use the right size if we just have the right | ||
83 | * 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 | #define put_user(x,ptr) ({ \ | ||
91 | unsigned long __pu_addr = (unsigned long)(ptr); \ | ||
92 | __chk_user_ptr(ptr); \ | ||
93 | __put_user_check((__typeof__(*(ptr)))(x),__pu_addr,sizeof(*(ptr))); }) | ||
94 | |||
95 | #define get_user(x,ptr) ({ \ | ||
96 | unsigned long __gu_addr = (unsigned long)(ptr); \ | ||
97 | __chk_user_ptr(ptr); \ | ||
98 | __get_user_check((x),__gu_addr,sizeof(*(ptr)),__typeof__(*(ptr))); }) | ||
99 | |||
100 | /* | ||
101 | * The "__xxx" versions do not do address space checking, useful when | ||
102 | * doing multiple accesses to the same area (the user has to do the | ||
103 | * checks by hand with "access_ok()") | ||
104 | */ | ||
105 | #define __put_user(x,ptr) __put_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr))) | ||
106 | #define __get_user(x,ptr) __get_user_nocheck((x),(ptr),sizeof(*(ptr)),__typeof__(*(ptr))) | ||
107 | |||
108 | struct __large_struct { unsigned long buf[100]; }; | ||
109 | #define __m(x) ((struct __large_struct __user *)(x)) | ||
110 | |||
111 | #define __put_user_check(x,addr,size) ({ \ | ||
112 | register int __pu_ret; \ | ||
113 | if (__access_ok(addr,size)) { \ | ||
114 | switch (size) { \ | ||
115 | case 1: __put_user_asm(x,b,addr,__pu_ret); break; \ | ||
116 | case 2: __put_user_asm(x,h,addr,__pu_ret); break; \ | ||
117 | case 4: __put_user_asm(x,,addr,__pu_ret); break; \ | ||
118 | case 8: __put_user_asm(x,d,addr,__pu_ret); break; \ | ||
119 | default: __pu_ret = __put_user_bad(); break; \ | ||
120 | } } else { __pu_ret = -EFAULT; } __pu_ret; }) | ||
121 | |||
122 | #define __put_user_nocheck(x,addr,size) ({ \ | ||
123 | register int __pu_ret; \ | ||
124 | switch (size) { \ | ||
125 | case 1: __put_user_asm(x,b,addr,__pu_ret); break; \ | ||
126 | case 2: __put_user_asm(x,h,addr,__pu_ret); break; \ | ||
127 | case 4: __put_user_asm(x,,addr,__pu_ret); break; \ | ||
128 | case 8: __put_user_asm(x,d,addr,__pu_ret); break; \ | ||
129 | default: __pu_ret = __put_user_bad(); break; \ | ||
130 | } __pu_ret; }) | ||
131 | |||
132 | #define __put_user_asm(x,size,addr,ret) \ | ||
133 | __asm__ __volatile__( \ | ||
134 | "/* Put user asm, inline. */\n" \ | ||
135 | "1:\t" "st"#size " %1, %2\n\t" \ | ||
136 | "clr %0\n" \ | ||
137 | "2:\n\n\t" \ | ||
138 | ".section .fixup,#alloc,#execinstr\n\t" \ | ||
139 | ".align 4\n" \ | ||
140 | "3:\n\t" \ | ||
141 | "b 2b\n\t" \ | ||
142 | " mov %3, %0\n\t" \ | ||
143 | ".previous\n\n\t" \ | ||
144 | ".section __ex_table,#alloc\n\t" \ | ||
145 | ".align 4\n\t" \ | ||
146 | ".word 1b, 3b\n\t" \ | ||
147 | ".previous\n\n\t" \ | ||
148 | : "=&r" (ret) : "r" (x), "m" (*__m(addr)), \ | ||
149 | "i" (-EFAULT)) | ||
150 | |||
151 | extern int __put_user_bad(void); | ||
152 | |||
153 | #define __get_user_check(x,addr,size,type) ({ \ | ||
154 | register int __gu_ret; \ | ||
155 | register unsigned long __gu_val; \ | ||
156 | if (__access_ok(addr,size)) { \ | ||
157 | switch (size) { \ | ||
158 | case 1: __get_user_asm(__gu_val,ub,addr,__gu_ret); break; \ | ||
159 | case 2: __get_user_asm(__gu_val,uh,addr,__gu_ret); break; \ | ||
160 | case 4: __get_user_asm(__gu_val,,addr,__gu_ret); break; \ | ||
161 | case 8: __get_user_asm(__gu_val,d,addr,__gu_ret); break; \ | ||
162 | default: __gu_val = 0; __gu_ret = __get_user_bad(); break; \ | ||
163 | } } else { __gu_val = 0; __gu_ret = -EFAULT; } x = (type) __gu_val; __gu_ret; }) | ||
164 | |||
165 | #define __get_user_check_ret(x,addr,size,type,retval) ({ \ | ||
166 | register unsigned long __gu_val __asm__ ("l1"); \ | ||
167 | if (__access_ok(addr,size)) { \ | ||
168 | switch (size) { \ | ||
169 | case 1: __get_user_asm_ret(__gu_val,ub,addr,retval); break; \ | ||
170 | case 2: __get_user_asm_ret(__gu_val,uh,addr,retval); break; \ | ||
171 | case 4: __get_user_asm_ret(__gu_val,,addr,retval); break; \ | ||
172 | case 8: __get_user_asm_ret(__gu_val,d,addr,retval); break; \ | ||
173 | default: if (__get_user_bad()) return retval; \ | ||
174 | } x = (type) __gu_val; } else return retval; }) | ||
175 | |||
176 | #define __get_user_nocheck(x,addr,size,type) ({ \ | ||
177 | register int __gu_ret; \ | ||
178 | register unsigned long __gu_val; \ | ||
179 | switch (size) { \ | ||
180 | case 1: __get_user_asm(__gu_val,ub,addr,__gu_ret); break; \ | ||
181 | case 2: __get_user_asm(__gu_val,uh,addr,__gu_ret); break; \ | ||
182 | case 4: __get_user_asm(__gu_val,,addr,__gu_ret); break; \ | ||
183 | case 8: __get_user_asm(__gu_val,d,addr,__gu_ret); break; \ | ||
184 | default: __gu_val = 0; __gu_ret = __get_user_bad(); break; \ | ||
185 | } x = (type) __gu_val; __gu_ret; }) | ||
186 | |||
187 | #define __get_user_nocheck_ret(x,addr,size,type,retval) ({ \ | ||
188 | register unsigned long __gu_val __asm__ ("l1"); \ | ||
189 | switch (size) { \ | ||
190 | case 1: __get_user_asm_ret(__gu_val,ub,addr,retval); break; \ | ||
191 | case 2: __get_user_asm_ret(__gu_val,uh,addr,retval); break; \ | ||
192 | case 4: __get_user_asm_ret(__gu_val,,addr,retval); break; \ | ||
193 | case 8: __get_user_asm_ret(__gu_val,d,addr,retval); break; \ | ||
194 | default: if (__get_user_bad()) return retval; \ | ||
195 | } x = (type) __gu_val; }) | ||
196 | |||
197 | #define __get_user_asm(x,size,addr,ret) \ | ||
198 | __asm__ __volatile__( \ | ||
199 | "/* Get user asm, inline. */\n" \ | ||
200 | "1:\t" "ld"#size " %2, %1\n\t" \ | ||
201 | "clr %0\n" \ | ||
202 | "2:\n\n\t" \ | ||
203 | ".section .fixup,#alloc,#execinstr\n\t" \ | ||
204 | ".align 4\n" \ | ||
205 | "3:\n\t" \ | ||
206 | "clr %1\n\t" \ | ||
207 | "b 2b\n\t" \ | ||
208 | " mov %3, %0\n\n\t" \ | ||
209 | ".previous\n\t" \ | ||
210 | ".section __ex_table,#alloc\n\t" \ | ||
211 | ".align 4\n\t" \ | ||
212 | ".word 1b, 3b\n\n\t" \ | ||
213 | ".previous\n\t" \ | ||
214 | : "=&r" (ret), "=&r" (x) : "m" (*__m(addr)), \ | ||
215 | "i" (-EFAULT)) | ||
216 | |||
217 | #define __get_user_asm_ret(x,size,addr,retval) \ | ||
218 | if (__builtin_constant_p(retval) && retval == -EFAULT) \ | ||
219 | __asm__ __volatile__( \ | ||
220 | "/* Get user asm ret, inline. */\n" \ | ||
221 | "1:\t" "ld"#size " %1, %0\n\n\t" \ | ||
222 | ".section __ex_table,#alloc\n\t" \ | ||
223 | ".align 4\n\t" \ | ||
224 | ".word 1b,__ret_efault\n\n\t" \ | ||
225 | ".previous\n\t" \ | ||
226 | : "=&r" (x) : "m" (*__m(addr))); \ | ||
227 | else \ | ||
228 | __asm__ __volatile__( \ | ||
229 | "/* Get user asm ret, inline. */\n" \ | ||
230 | "1:\t" "ld"#size " %1, %0\n\n\t" \ | ||
231 | ".section .fixup,#alloc,#execinstr\n\t" \ | ||
232 | ".align 4\n" \ | ||
233 | "3:\n\t" \ | ||
234 | "ret\n\t" \ | ||
235 | " restore %%g0, %2, %%o0\n\n\t" \ | ||
236 | ".previous\n\t" \ | ||
237 | ".section __ex_table,#alloc\n\t" \ | ||
238 | ".align 4\n\t" \ | ||
239 | ".word 1b, 3b\n\n\t" \ | ||
240 | ".previous\n\t" \ | ||
241 | : "=&r" (x) : "m" (*__m(addr)), "i" (retval)) | ||
242 | |||
243 | extern int __get_user_bad(void); | ||
244 | |||
245 | extern unsigned long __copy_user(void __user *to, const void __user *from, unsigned long size); | ||
246 | |||
247 | static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) | ||
248 | { | ||
249 | if (n && __access_ok((unsigned long) to, n)) | ||
250 | return __copy_user(to, (__force void __user *) from, n); | ||
251 | else | ||
252 | return n; | ||
253 | } | ||
254 | |||
255 | static inline unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n) | ||
256 | { | ||
257 | return __copy_user(to, (__force void __user *) from, n); | ||
258 | } | ||
259 | |||
260 | static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) | ||
261 | { | ||
262 | if (n && __access_ok((unsigned long) from, n)) | ||
263 | return __copy_user((__force void __user *) to, from, n); | ||
264 | else | ||
265 | return n; | ||
266 | } | ||
267 | |||
268 | static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n) | ||
269 | { | ||
270 | return __copy_user((__force void __user *) to, from, n); | ||
271 | } | ||
272 | |||
273 | #define __copy_to_user_inatomic __copy_to_user | ||
274 | #define __copy_from_user_inatomic __copy_from_user | ||
275 | |||
276 | static inline unsigned long __clear_user(void __user *addr, unsigned long size) | ||
277 | { | ||
278 | unsigned long ret; | ||
279 | |||
280 | __asm__ __volatile__ ( | ||
281 | ".section __ex_table,#alloc\n\t" | ||
282 | ".align 4\n\t" | ||
283 | ".word 1f,3\n\t" | ||
284 | ".previous\n\t" | ||
285 | "mov %2, %%o1\n" | ||
286 | "1:\n\t" | ||
287 | "call __bzero\n\t" | ||
288 | " mov %1, %%o0\n\t" | ||
289 | "mov %%o0, %0\n" | ||
290 | : "=r" (ret) : "r" (addr), "r" (size) : | ||
291 | "o0", "o1", "o2", "o3", "o4", "o5", "o7", | ||
292 | "g1", "g2", "g3", "g4", "g5", "g7", "cc"); | ||
293 | |||
294 | return ret; | ||
295 | } | ||
296 | |||
297 | static inline unsigned long clear_user(void __user *addr, unsigned long n) | ||
298 | { | ||
299 | if (n && __access_ok((unsigned long) addr, n)) | ||
300 | return __clear_user(addr, n); | ||
301 | else | ||
302 | return n; | ||
303 | } | ||
304 | |||
305 | extern long __strncpy_from_user(char *dest, const char __user *src, long count); | ||
306 | |||
307 | static inline long strncpy_from_user(char *dest, const char __user *src, long count) | ||
308 | { | ||
309 | if (__access_ok((unsigned long) src, count)) | ||
310 | return __strncpy_from_user(dest, src, count); | ||
311 | else | ||
312 | return -EFAULT; | ||
313 | } | ||
314 | |||
315 | extern long __strlen_user(const char __user *); | ||
316 | extern long __strnlen_user(const char __user *, long len); | ||
317 | |||
318 | static inline long strlen_user(const char __user *str) | ||
319 | { | ||
320 | if (!access_ok(VERIFY_READ, str, 0)) | ||
321 | return 0; | ||
322 | else | ||
323 | return __strlen_user(str); | ||
324 | } | ||
325 | |||
326 | static inline long strnlen_user(const char __user *str, long len) | ||
327 | { | ||
328 | if (!access_ok(VERIFY_READ, str, 0)) | ||
329 | return 0; | ||
330 | else | ||
331 | return __strnlen_user(str, len); | ||
332 | } | ||
333 | |||
334 | #endif /* __ASSEMBLY__ */ | ||
335 | |||
336 | #endif /* _ASM_UACCESS_H */ | ||