1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
|
/* Test memset functions.
Copyright (C) 1999-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#define TEST_MAIN
#ifdef TEST_BZERO
# ifdef TEST_EXPLICIT_BZERO
# define TEST_NAME "explicit_bzero"
# else
# define TEST_NAME "bzero"
# endif
#else
# ifndef WIDE
# define TEST_NAME "memset"
# else
# define TEST_NAME "wmemset"
# endif /* WIDE */
#endif /* !TEST_BZERO */
#define MIN_PAGE_SIZE 131072
#include "test-string.h"
#ifndef WIDE
# define MEMSET memset
# define CHAR char
# define UCHAR unsigned char
# define SIMPLE_MEMSET simple_memset
# define MEMCMP memcmp
# define BIG_CHAR CHAR_MAX
#else
# include <wchar.h>
# define MEMSET wmemset
# define CHAR wchar_t
# define UCHAR wchar_t
# define SIMPLE_MEMSET simple_wmemset
# define MEMCMP wmemcmp
# define BIG_CHAR WCHAR_MAX
#endif /* WIDE */
CHAR *SIMPLE_MEMSET (CHAR *, int, size_t);
#ifdef TEST_BZERO
typedef void (*proto_t) (char *, size_t);
void simple_bzero (char *, size_t);
void builtin_bzero (char *, size_t);
IMPL (simple_bzero, 0)
IMPL (builtin_bzero, 0)
#ifdef TEST_EXPLICIT_BZERO
IMPL (explicit_bzero, 1)
#else
IMPL (bzero, 1)
#endif
void
simple_bzero (char *s, size_t n)
{
SIMPLE_MEMSET (s, 0, n);
}
void
builtin_bzero (char *s, size_t n)
{
__builtin_bzero (s, n);
}
#else
typedef CHAR *(*proto_t) (CHAR *, int, size_t);
IMPL (SIMPLE_MEMSET, 0)
# ifndef WIDE
char *builtin_memset (char *, int, size_t);
IMPL (builtin_memset, 0)
# endif /* !WIDE */
IMPL (MEMSET, 1)
# ifndef WIDE
char *
builtin_memset (char *s, int c, size_t n)
{
return __builtin_memset (s, c, n);
}
# endif /* !WIDE */
#endif /* !TEST_BZERO */
CHAR *
inhibit_loop_to_libcall
SIMPLE_MEMSET (CHAR *s, int c, size_t n)
{
CHAR *r = s, *end = s + n;
while (r < end)
*r++ = c;
return s;
}
static void
do_one_test (impl_t *impl, CHAR *s, int c __attribute ((unused)), size_t n, int space_below, int space_above)
{
CHAR buf[n];
CHAR sentinel = ~c;
if (space_below)
s[-1] = sentinel;
if (space_above)
s[n] = sentinel;
SIMPLE_MEMSET(s, ~c, n);
#ifdef TEST_BZERO
simple_bzero (buf, n);
CALL (impl, s, n);
if (memcmp (s, buf, n) != 0
|| (space_below && s[-1] != sentinel)
|| (space_above && s[n] != sentinel))
#else
CHAR *res = CALL (impl, s, c, n);
if (res != s
|| SIMPLE_MEMSET (buf, c, n) != buf
|| MEMCMP (s, buf, n) != 0
|| (space_below && s[-1] != sentinel)
|| (space_above && s[n] != sentinel))
#endif /* !TEST_BZERO */
{
error (0, 0, "Wrong result in function %s", impl->name);
ret = 1;
return;
}
}
static void
do_test (size_t align, int c, size_t len)
{
int space_below, space_above;
align &= 4095;
if ((align + len) * sizeof (CHAR) > page_size)
return;
space_below = !!align;
space_above = !((align + len + 1) * sizeof (CHAR) > page_size);
FOR_EACH_IMPL (impl, 0)
do_one_test (impl, (CHAR *) (buf1) + align, c, len, space_below, space_above);
}
#ifndef TEST_BZERO
static void
do_random_tests (void)
{
size_t i, j, k, n, align, len, size;
int c, o;
UCHAR *p, *res;
UCHAR *p2 = (UCHAR *) buf2;
for (i = 0; i < 65536 / sizeof (CHAR); ++i)
p2[i] = random () & BIG_CHAR;
for (n = 0; n < ITERATIONS; n++)
{
if ((random () & 31) == 0)
size = 65536 / sizeof (CHAR);
else
size = 512;
p = (UCHAR *) (buf1 + page_size) - size;
len = random () & (size - 1);
align = size - len - (random () & 31);
if (align > size)
align = size - len;
if ((random () & 7) == 0)
align &= ~63;
if ((random () & 7) == 0)
c = 0;
else
c = random () & BIG_CHAR;
o = random () & BIG_CHAR;
if (o == c)
o = (c + 1) & BIG_CHAR;
j = len + align + 128;
if (j > size)
j = size;
if (align >= 128)
k = align - 128;
else
k = 0;
for (i = k; i < align; ++i)
p[i] = o;
for (i = align + len; i < j; ++i)
p[i] = o;
FOR_EACH_IMPL (impl, 1)
{
for (i = 0; i < len; ++i)
{
p[i + align] = p2[i];
if (p[i + align] == c)
p[i + align] = o;
}
res = (UCHAR *) CALL (impl, (CHAR *) p + align, c, len);
if (res != p + align)
{
error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd) %p != %p",
n, impl->name, align, c, len, res, p + align);
ret = 1;
}
for (i = k; i < align; ++i)
if (p[i] != o)
{
error (0, 0, "Iteration %zd - garbage before %s (%zd, %d, %zd)",
n, impl->name, align, c, len);
ret = 1;
break;
}
for (; i < align + len; ++i)
if (p[i] != c)
{
error (0, 0, "Iteration %zd - not cleared correctly %s (%zd, %d, %zd)",
n, impl->name, align, c, len);
ret = 1;
break;
}
for (; i < j; ++i)
if (p[i] != o)
{
error (0, 0, "Iteration %zd - garbage after %s (%zd, %d, %zd)",
n, impl->name, align, c, len);
ret = 1;
break;
}
}
}
}
#endif /* !TEST_BZERO */
int
test_main (void)
{
size_t i;
int c = 0;
test_init ();
printf ("%24s", "");
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);
putchar ('\n');
#ifndef TEST_BZERO
for (c = -65; c <= 130; c += 65)
#endif
{
for (i = 0; i < 18; ++i)
do_test (0, c, 1 << i);
for (i = 1; i < 64; ++i)
{
do_test (i, c, i);
do_test (4096 - i, c, i);
do_test (4095, c, i);
if (i & (i - 1))
do_test (0, c, i);
}
do_test (1, c, 14);
do_test (3, c, 1024);
do_test (4, c, 64);
do_test (2, c, 25);
}
#ifndef TEST_BZERO
do_random_tests ();
#endif
return ret;
}
#include <support/test-driver.c>
|
