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2e9e1667 | 1 | /* Test memset functions. |
04277e02 | 2 | Copyright (C) 1999-2019 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 | 17 | License along with the GNU C Library; if not, see |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
58ef9ef7 RM |
19 | |
20 | #define TEST_MAIN | |
69f07e5f | 21 | #ifdef TEST_BZERO |
ea1bd74d ZW |
22 | # ifdef TEST_EXPLICIT_BZERO |
23 | # define TEST_NAME "explicit_bzero" | |
24 | # else | |
25 | # define TEST_NAME "bzero" | |
26 | # endif | |
69f07e5f | 27 | #else |
2e9e1667 SL |
28 | # ifndef WIDE |
29 | # define TEST_NAME "memset" | |
30 | # else | |
31 | # define TEST_NAME "wmemset" | |
32 | # endif /* WIDE */ | |
33 | #endif /* !TEST_BZERO */ | |
58ef9ef7 RM |
34 | #define MIN_PAGE_SIZE 131072 |
35 | #include "test-string.h" | |
36 | ||
2e9e1667 SL |
37 | #ifndef WIDE |
38 | # define MEMSET memset | |
39 | # define CHAR char | |
40 | # define UCHAR unsigned char | |
41 | # define SIMPLE_MEMSET simple_memset | |
42 | # define MEMCMP memcmp | |
43 | # define BIG_CHAR CHAR_MAX | |
44 | #else | |
45 | # include <wchar.h> | |
46 | # define MEMSET wmemset | |
47 | # define CHAR wchar_t | |
48 | # define UCHAR wchar_t | |
49 | # define SIMPLE_MEMSET simple_wmemset | |
50 | # define MEMCMP wmemcmp | |
51 | # define BIG_CHAR WCHAR_MAX | |
52 | #endif /* WIDE */ | |
53 | ||
54 | CHAR *SIMPLE_MEMSET (CHAR *, int, size_t); | |
9a387d1f L |
55 | |
56 | #ifdef TEST_BZERO | |
57 | typedef void (*proto_t) (char *, size_t); | |
58 | void simple_bzero (char *, size_t); | |
59 | void builtin_bzero (char *, size_t); | |
60 | ||
61 | IMPL (simple_bzero, 0) | |
62 | IMPL (builtin_bzero, 0) | |
ea1bd74d ZW |
63 | #ifdef TEST_EXPLICIT_BZERO |
64 | IMPL (explicit_bzero, 1) | |
65 | #else | |
9a387d1f | 66 | IMPL (bzero, 1) |
ea1bd74d | 67 | #endif |
9a387d1f L |
68 | |
69 | void | |
70 | simple_bzero (char *s, size_t n) | |
71 | { | |
2e9e1667 | 72 | SIMPLE_MEMSET (s, 0, n); |
9a387d1f L |
73 | } |
74 | ||
75 | void | |
76 | builtin_bzero (char *s, size_t n) | |
77 | { | |
78 | __builtin_bzero (s, n); | |
79 | } | |
80 | #else | |
2e9e1667 | 81 | typedef CHAR *(*proto_t) (CHAR *, int, size_t); |
58ef9ef7 | 82 | |
2e9e1667 SL |
83 | IMPL (SIMPLE_MEMSET, 0) |
84 | # ifndef WIDE | |
85 | char *builtin_memset (char *, int, size_t); | |
58ef9ef7 | 86 | IMPL (builtin_memset, 0) |
2e9e1667 SL |
87 | # endif /* !WIDE */ |
88 | IMPL (MEMSET, 1) | |
58ef9ef7 | 89 | |
2e9e1667 | 90 | # ifndef WIDE |
9a387d1f L |
91 | char * |
92 | builtin_memset (char *s, int c, size_t n) | |
93 | { | |
94 | return __builtin_memset (s, c, n); | |
95 | } | |
2e9e1667 SL |
96 | # endif /* !WIDE */ |
97 | #endif /* !TEST_BZERO */ | |
9a387d1f | 98 | |
2e9e1667 | 99 | CHAR * |
85c2e611 | 100 | inhibit_loop_to_libcall |
2e9e1667 | 101 | SIMPLE_MEMSET (CHAR *s, int c, size_t n) |
58ef9ef7 | 102 | { |
2e9e1667 | 103 | CHAR *r = s, *end = s + n; |
58ef9ef7 RM |
104 | while (r < end) |
105 | *r++ = c; | |
106 | return s; | |
107 | } | |
108 | ||
58ef9ef7 | 109 | static void |
2e9e1667 | 110 | do_one_test (impl_t *impl, CHAR *s, int c __attribute ((unused)), size_t n) |
58ef9ef7 | 111 | { |
2e9e1667 | 112 | CHAR tstbuf[n]; |
9a387d1f L |
113 | #ifdef TEST_BZERO |
114 | simple_bzero (tstbuf, n); | |
115 | CALL (impl, s, n); | |
116 | if (memcmp (s, tstbuf, n) != 0) | |
117 | #else | |
2e9e1667 | 118 | CHAR *res = CALL (impl, s, c, n); |
c158fc76 | 119 | if (res != s |
2e9e1667 SL |
120 | || SIMPLE_MEMSET (tstbuf, c, n) != tstbuf |
121 | || MEMCMP (s, tstbuf, n) != 0) | |
122 | #endif /* !TEST_BZERO */ | |
58ef9ef7 | 123 | { |
c158fc76 | 124 | error (0, 0, "Wrong result in function %s", impl->name); |
58ef9ef7 RM |
125 | ret = 1; |
126 | return; | |
127 | } | |
58ef9ef7 RM |
128 | } |
129 | ||
130 | static void | |
131 | do_test (size_t align, int c, size_t len) | |
132 | { | |
133 | align &= 7; | |
2e9e1667 | 134 | if ((align + len) * sizeof (CHAR) > page_size) |
58ef9ef7 RM |
135 | return; |
136 | ||
58ef9ef7 | 137 | FOR_EACH_IMPL (impl, 0) |
2e9e1667 | 138 | do_one_test (impl, (CHAR *) (buf1) + align, c, len); |
58ef9ef7 RM |
139 | } |
140 | ||
9a387d1f | 141 | #ifndef TEST_BZERO |
58ef9ef7 RM |
142 | static void |
143 | do_random_tests (void) | |
144 | { | |
145 | size_t i, j, k, n, align, len, size; | |
146 | int c, o; | |
2e9e1667 SL |
147 | UCHAR *p, *res; |
148 | UCHAR *p2 = (UCHAR *) buf2; | |
58ef9ef7 | 149 | |
2e9e1667 SL |
150 | for (i = 0; i < 65536 / sizeof (CHAR); ++i) |
151 | p2[i] = random () & BIG_CHAR; | |
58ef9ef7 RM |
152 | |
153 | for (n = 0; n < ITERATIONS; n++) | |
154 | { | |
155 | if ((random () & 31) == 0) | |
2e9e1667 | 156 | size = 65536 / sizeof (CHAR); |
58ef9ef7 RM |
157 | else |
158 | size = 512; | |
2e9e1667 | 159 | p = (UCHAR *) (buf1 + page_size) - size; |
58ef9ef7 RM |
160 | len = random () & (size - 1); |
161 | align = size - len - (random () & 31); | |
162 | if (align > size) | |
163 | align = size - len; | |
164 | if ((random () & 7) == 0) | |
165 | align &= ~63; | |
166 | if ((random () & 7) == 0) | |
167 | c = 0; | |
168 | else | |
2e9e1667 SL |
169 | c = random () & BIG_CHAR; |
170 | o = random () & BIG_CHAR; | |
58ef9ef7 | 171 | if (o == c) |
2e9e1667 | 172 | o = (c + 1) & BIG_CHAR; |
58ef9ef7 RM |
173 | j = len + align + 128; |
174 | if (j > size) | |
175 | j = size; | |
176 | if (align >= 128) | |
177 | k = align - 128; | |
178 | else | |
179 | k = 0; | |
180 | for (i = k; i < align; ++i) | |
181 | p[i] = o; | |
182 | for (i = align + len; i < j; ++i) | |
183 | p[i] = o; | |
184 | ||
185 | FOR_EACH_IMPL (impl, 1) | |
186 | { | |
187 | for (i = 0; i < len; ++i) | |
188 | { | |
2e9e1667 | 189 | p[i + align] = p2[i]; |
58ef9ef7 RM |
190 | if (p[i + align] == c) |
191 | p[i + align] = o; | |
192 | } | |
2e9e1667 | 193 | res = (UCHAR *) CALL (impl, (CHAR *) p + align, c, len); |
58ef9ef7 RM |
194 | if (res != p + align) |
195 | { | |
196 | error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd) %p != %p", | |
197 | n, impl->name, align, c, len, res, p + align); | |
198 | ret = 1; | |
199 | } | |
200 | for (i = k; i < align; ++i) | |
201 | if (p[i] != o) | |
202 | { | |
203 | error (0, 0, "Iteration %zd - garbage before %s (%zd, %d, %zd)", | |
204 | n, impl->name, align, c, len); | |
205 | ret = 1; | |
206 | break; | |
207 | } | |
208 | for (; i < align + len; ++i) | |
209 | if (p[i] != c) | |
210 | { | |
211 | error (0, 0, "Iteration %zd - not cleared correctly %s (%zd, %d, %zd)", | |
212 | n, impl->name, align, c, len); | |
213 | ret = 1; | |
214 | break; | |
215 | } | |
216 | for (; i < j; ++i) | |
217 | if (p[i] != o) | |
218 | { | |
219 | error (0, 0, "Iteration %zd - garbage after %s (%zd, %d, %zd)", | |
220 | n, impl->name, align, c, len); | |
221 | ret = 1; | |
222 | break; | |
223 | } | |
224 | } | |
225 | } | |
226 | } | |
2e9e1667 | 227 | #endif /* !TEST_BZERO */ |
58ef9ef7 RM |
228 | |
229 | int | |
230 | test_main (void) | |
231 | { | |
232 | size_t i; | |
9a387d1f | 233 | int c = 0; |
58ef9ef7 RM |
234 | |
235 | test_init (); | |
236 | ||
237 | printf ("%24s", ""); | |
238 | FOR_EACH_IMPL (impl, 0) | |
239 | printf ("\t%s", impl->name); | |
240 | putchar ('\n'); | |
241 | ||
9a387d1f | 242 | #ifndef TEST_BZERO |
09987e42 | 243 | for (c = -65; c <= 130; c += 65) |
9a387d1f | 244 | #endif |
58ef9ef7 RM |
245 | { |
246 | for (i = 0; i < 18; ++i) | |
247 | do_test (0, c, 1 << i); | |
248 | for (i = 1; i < 32; ++i) | |
249 | { | |
250 | do_test (i, c, i); | |
251 | if (i & (i - 1)) | |
252 | do_test (0, c, i); | |
253 | } | |
254 | do_test (1, c, 14); | |
255 | do_test (3, c, 1024); | |
256 | do_test (4, c, 64); | |
257 | do_test (2, c, 25); | |
258 | } | |
259 | ||
9a387d1f | 260 | #ifndef TEST_BZERO |
58ef9ef7 | 261 | do_random_tests (); |
9a387d1f L |
262 | #endif |
263 | ||
58ef9ef7 RM |
264 | return ret; |
265 | } | |
266 | ||
fb82116f | 267 | #include <support/test-driver.c> |