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58ef9ef7 | 1 | /* Test and measure memmove functions. |
688903eb | 2 | Copyright (C) 1999-2018 Free Software Foundation, Inc. |
58ef9ef7 RM |
3 | This file is part of the GNU C Library. |
4 | Written by Jakub Jelinek <jakub@redhat.com>, 1999. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
58ef9ef7 RM |
19 | |
20 | #define TEST_MAIN | |
69f07e5f L |
21 | #ifdef TEST_BCOPY |
22 | # define TEST_NAME "bcopy" | |
23 | #else | |
24 | # define TEST_NAME "memmove" | |
25 | #endif | |
58ef9ef7 | 26 | #include "test-string.h" |
cd66c0e5 | 27 | #include <support/test-driver.h> |
58ef9ef7 | 28 | |
58ef9ef7 RM |
29 | char *simple_memmove (char *, const char *, size_t); |
30 | ||
9a387d1f L |
31 | #ifdef TEST_BCOPY |
32 | typedef void (*proto_t) (const char *, char *, size_t); | |
33 | void simple_bcopy (const char *, char *, size_t); | |
34 | ||
35 | IMPL (simple_bcopy, 0) | |
36 | IMPL (bcopy, 1) | |
37 | ||
38 | void | |
39 | simple_bcopy (const char *src, char *dst, size_t n) | |
40 | { | |
41 | simple_memmove (dst, src, n); | |
42 | } | |
43 | #else | |
44 | typedef char *(*proto_t) (char *, const char *, size_t); | |
45 | ||
58ef9ef7 RM |
46 | IMPL (simple_memmove, 0) |
47 | IMPL (memmove, 1) | |
9a387d1f | 48 | #endif |
58ef9ef7 RM |
49 | |
50 | char * | |
85c2e611 | 51 | inhibit_loop_to_libcall |
58ef9ef7 RM |
52 | simple_memmove (char *dst, const char *src, size_t n) |
53 | { | |
54 | char *ret = dst; | |
55 | if (src < dst) | |
56 | { | |
57 | dst += n; | |
58 | src += n; | |
59 | while (n--) | |
60 | *--dst = *--src; | |
61 | } | |
62 | else | |
63 | while (n--) | |
64 | *dst++ = *src++; | |
65 | return ret; | |
66 | } | |
67 | ||
68 | static void | |
69 | do_one_test (impl_t *impl, char *dst, char *src, const char *orig_src, | |
70 | size_t len) | |
71 | { | |
447720b0 | 72 | /* This also clears the destination buffer set by the previous run. */ |
9a387d1f L |
73 | memcpy (src, orig_src, len); |
74 | #ifdef TEST_BCOPY | |
75 | CALL (impl, src, dst, len); | |
76 | #else | |
58ef9ef7 RM |
77 | char *res; |
78 | ||
58ef9ef7 RM |
79 | res = CALL (impl, dst, src, len); |
80 | if (res != dst) | |
81 | { | |
82 | error (0, 0, "Wrong result in function %s %p %p", impl->name, | |
83 | res, dst); | |
84 | ret = 1; | |
85 | return; | |
86 | } | |
9a387d1f | 87 | #endif |
58ef9ef7 RM |
88 | |
89 | if (memcmp (dst, orig_src, len) != 0) | |
90 | { | |
91 | error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"", | |
92 | impl->name, dst, src); | |
93 | ret = 1; | |
94 | return; | |
95 | } | |
58ef9ef7 RM |
96 | } |
97 | ||
98 | static void | |
99 | do_test (size_t align1, size_t align2, size_t len) | |
100 | { | |
101 | size_t i, j; | |
102 | char *s1, *s2; | |
103 | ||
104 | align1 &= 63; | |
105 | if (align1 + len >= page_size) | |
106 | return; | |
107 | ||
108 | align2 &= 63; | |
109 | if (align2 + len >= page_size) | |
110 | return; | |
111 | ||
0317eaec RM |
112 | s1 = (char *) (buf1 + align1); |
113 | s2 = (char *) (buf2 + align2); | |
58ef9ef7 RM |
114 | |
115 | for (i = 0, j = 1; i < len; i++, j += 23) | |
116 | s1[i] = j; | |
117 | ||
58ef9ef7 | 118 | FOR_EACH_IMPL (impl, 0) |
0317eaec | 119 | do_one_test (impl, s2, (char *) (buf2 + align1), s1, len); |
58ef9ef7 RM |
120 | } |
121 | ||
122 | static void | |
123 | do_random_tests (void) | |
124 | { | |
125 | size_t i, n, align1, align2, len, size; | |
126 | size_t srcstart, srcend, dststart, dstend; | |
127 | int c; | |
128 | unsigned char *p1, *p2; | |
9a387d1f | 129 | #ifndef TEST_BCOPY |
58ef9ef7 | 130 | unsigned char *res; |
9a387d1f | 131 | #endif |
58ef9ef7 RM |
132 | |
133 | for (n = 0; n < ITERATIONS; n++) | |
134 | { | |
135 | if ((random () & 255) == 0) | |
136 | size = 65536; | |
137 | else | |
138 | size = 512; | |
139 | if (size > page_size) | |
140 | size = page_size; | |
141 | if ((random () & 3) == 0) | |
142 | { | |
143 | len = random () & (size - 1); | |
144 | align1 = size - len - (random () & 31); | |
145 | align2 = size - len - (random () & 31); | |
146 | if (align1 > size) | |
147 | align1 = 0; | |
148 | if (align2 > size) | |
149 | align2 = 0; | |
150 | } | |
151 | else | |
152 | { | |
153 | align1 = random () & (size / 2 - 1); | |
154 | align2 = random () & (size / 2 - 1); | |
155 | len = random () & (size - 1); | |
156 | if (align1 + len > size) | |
157 | align1 = size - len; | |
158 | if (align2 + len > size) | |
159 | align2 = size - len; | |
160 | } | |
161 | ||
162 | p1 = buf1 + page_size - size; | |
163 | p2 = buf2 + page_size - size; | |
164 | c = random () & 255; | |
165 | srcend = align1 + len + 256; | |
166 | if (srcend > size) | |
167 | srcend = size; | |
168 | if (align1 > 256) | |
169 | srcstart = align1 - 256; | |
170 | else | |
171 | srcstart = 0; | |
172 | for (i = srcstart; i < srcend; ++i) | |
173 | p1[i] = random () & 255; | |
174 | dstend = align2 + len + 256; | |
175 | if (dstend > size) | |
176 | dstend = size; | |
177 | if (align2 > 256) | |
178 | dststart = align2 - 256; | |
179 | else | |
180 | dststart = 0; | |
181 | ||
182 | FOR_EACH_IMPL (impl, 1) | |
183 | { | |
184 | memset (p2 + dststart, c, dstend - dststart); | |
185 | memcpy (p2 + srcstart, p1 + srcstart, srcend - srcstart); | |
9a387d1f L |
186 | #ifdef TEST_BCOPY |
187 | CALL (impl, (char *) (p2 + align1), (char *) (p2 + align2), len); | |
188 | #else | |
0317eaec RM |
189 | res = (unsigned char *) CALL (impl, |
190 | (char *) (p2 + align2), | |
191 | (char *) (p2 + align1), len); | |
58ef9ef7 RM |
192 | if (res != p2 + align2) |
193 | { | |
194 | error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p", | |
195 | n, impl->name, align1, align2, len, res, p2 + align2); | |
196 | ret = 1; | |
197 | } | |
9a387d1f | 198 | #endif |
58ef9ef7 RM |
199 | if (memcmp (p1 + align1, p2 + align2, len)) |
200 | { | |
201 | error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)", | |
202 | n, impl->name, align1, align2, len); | |
203 | ret = 1; | |
204 | } | |
205 | for (i = dststart; i < dstend; ++i) | |
206 | { | |
207 | if (i >= align2 && i < align2 + len) | |
208 | { | |
209 | i = align2 + len - 1; | |
210 | continue; | |
211 | } | |
212 | if (i >= srcstart && i < srcend) | |
213 | { | |
214 | i = srcend - 1; | |
215 | continue; | |
216 | } | |
217 | if (p2[i] != c) | |
218 | { | |
219 | error (0, 0, "Iteration %zd - garbage in memset area, %s (%zd, %zd, %zd)", | |
220 | n, impl->name, align1, align2, len); | |
221 | ret = 1; | |
222 | break; | |
223 | } | |
224 | } | |
225 | ||
226 | if (srcstart < align2 | |
227 | && memcmp (p2 + srcstart, p1 + srcstart, | |
228 | (srcend > align2 ? align2 : srcend) - srcstart)) | |
229 | { | |
230 | error (0, 0, "Iteration %zd - garbage before dst, %s (%zd, %zd, %zd)", | |
231 | n, impl->name, align1, align2, len); | |
232 | ret = 1; | |
233 | break; | |
234 | } | |
235 | ||
236 | i = srcstart > align2 + len ? srcstart : align2 + len; | |
237 | if (srcend > align2 + len | |
238 | && memcmp (p2 + i, p1 + i, srcend - i)) | |
239 | { | |
240 | error (0, 0, "Iteration %zd - garbage after dst, %s (%zd, %zd, %zd)", | |
241 | n, impl->name, align1, align2, len); | |
242 | ret = 1; | |
243 | break; | |
244 | } | |
245 | } | |
246 | } | |
247 | } | |
248 | ||
cd66c0e5 AS |
249 | static void |
250 | do_test2 (void) | |
251 | { | |
252 | size_t size = 0x20000000; | |
253 | uint32_t * large_buf; | |
254 | ||
255 | large_buf = mmap ((void*) 0x70000000, size, PROT_READ | PROT_WRITE, | |
256 | MAP_PRIVATE | MAP_ANON, -1, 0); | |
257 | ||
258 | if (large_buf == MAP_FAILED) | |
259 | error (EXIT_UNSUPPORTED, errno, "Large mmap failed"); | |
260 | ||
261 | if ((uintptr_t) large_buf > 0x80000000 - 128 | |
262 | || 0x80000000 - (uintptr_t) large_buf > 0x20000000) | |
263 | { | |
264 | error (0, 0, "Large mmap allocated improperly"); | |
265 | ret = EXIT_UNSUPPORTED; | |
266 | munmap ((void *) large_buf, size); | |
267 | return; | |
268 | } | |
269 | ||
270 | size_t bytes_move = 0x80000000 - (uintptr_t) large_buf; | |
271 | size_t arr_size = bytes_move / sizeof (uint32_t); | |
272 | size_t i; | |
273 | ||
274 | FOR_EACH_IMPL (impl, 0) | |
275 | { | |
276 | for (i = 0; i < arr_size; i++) | |
277 | large_buf[i] = (uint32_t) i; | |
278 | ||
279 | uint32_t * dst = &large_buf[33]; | |
280 | ||
281 | #ifdef TEST_BCOPY | |
282 | CALL (impl, (char *) large_buf, (char *) dst, bytes_move); | |
283 | #else | |
284 | CALL (impl, (char *) dst, (char *) large_buf, bytes_move); | |
285 | #endif | |
286 | ||
287 | for (i = 0; i < arr_size; i++) | |
288 | { | |
289 | if (dst[i] != (uint32_t) i) | |
290 | { | |
291 | error (0, 0, | |
292 | "Wrong result in function %s dst \"%p\" src \"%p\" offset \"%zd\"", | |
293 | impl->name, dst, large_buf, i); | |
294 | ret = 1; | |
295 | break; | |
296 | } | |
297 | } | |
298 | } | |
299 | ||
300 | munmap ((void *) large_buf, size); | |
301 | } | |
302 | ||
58ef9ef7 RM |
303 | int |
304 | test_main (void) | |
305 | { | |
306 | size_t i; | |
307 | ||
308 | test_init (); | |
309 | ||
310 | printf ("%23s", ""); | |
311 | FOR_EACH_IMPL (impl, 0) | |
312 | printf ("\t%s", impl->name); | |
313 | putchar ('\n'); | |
314 | ||
315 | for (i = 0; i < 14; ++i) | |
316 | { | |
317 | do_test (0, 32, 1 << i); | |
318 | do_test (32, 0, 1 << i); | |
319 | do_test (0, i, 1 << i); | |
320 | do_test (i, 0, 1 << i); | |
321 | } | |
322 | ||
323 | for (i = 0; i < 32; ++i) | |
324 | { | |
325 | do_test (0, 32, i); | |
326 | do_test (32, 0, i); | |
327 | do_test (0, i, i); | |
328 | do_test (i, 0, i); | |
329 | } | |
330 | ||
331 | for (i = 3; i < 32; ++i) | |
332 | { | |
333 | if ((i & (i - 1)) == 0) | |
334 | continue; | |
335 | do_test (0, 32, 16 * i); | |
336 | do_test (32, 0, 16 * i); | |
337 | do_test (0, i, 16 * i); | |
338 | do_test (i, 0, 16 * i); | |
339 | } | |
340 | ||
341 | do_random_tests (); | |
cd66c0e5 AS |
342 | |
343 | do_test2 (); | |
344 | ||
58ef9ef7 RM |
345 | return ret; |
346 | } | |
347 | ||
fb82116f | 348 | #include <support/test-driver.c> |