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
|
/* Measure __strcpy_chk functions.
Copyright (C) 2013-2018 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
<http://www.gnu.org/licenses/>. */
#ifndef STRCPY_RESULT
# define STRCPY_RESULT(dst, len) dst
# define TEST_MAIN
# define TEST_NAME "strcpy_chk"
# include "bench-string.h"
/* This test case implicitly tests the availability of the __chk_fail
symbol, which is part of the public ABI and may be used
externally. */
extern void __attribute__ ((noreturn)) __chk_fail (void);
char *simple_strcpy_chk (char *, const char *, size_t);
extern char *normal_strcpy (char *, const char *, size_t)
__asm ("strcpy");
extern char *__strcpy_chk (char *, const char *, size_t);
IMPL (simple_strcpy_chk, 0)
IMPL (normal_strcpy, 1)
IMPL (__strcpy_chk, 2)
char *
simple_strcpy_chk (char *dst, const char *src, size_t len)
{
char *ret = dst;
if (! len)
__chk_fail ();
while ((*dst++ = *src++) != '\0')
if (--len == 0)
__chk_fail ();
return ret;
}
#endif
#include <fcntl.h>
#include <paths.h>
#include <setjmp.h>
#include <signal.h>
#include <support/support.h>
volatile int chk_fail_ok;
jmp_buf chk_fail_buf;
static void
handler (int sig)
{
if (chk_fail_ok)
{
chk_fail_ok = 0;
longjmp (chk_fail_buf, 1);
}
else
_exit (127);
}
typedef char *(*proto_t) (char *, const char *, size_t);
static void
do_one_test (impl_t *impl, char *dst, const char *src,
size_t len, size_t dlen)
{
char *res;
size_t i, iters = INNER_LOOP_ITERS;
timing_t start, stop, cur;
if (dlen <= len)
{
if (impl->test == 1)
return;
chk_fail_ok = 1;
if (setjmp (chk_fail_buf) == 0)
{
res = CALL (impl, dst, src, dlen);
printf ("*** Function %s (%zd; %zd) did not __chk_fail\n",
impl->name, len, dlen);
chk_fail_ok = 0;
ret = 1;
}
return;
}
else
res = CALL (impl, dst, src, dlen);
if (res != STRCPY_RESULT (dst, len))
{
printf ("Wrong result in function %s %p %p\n", impl->name,
res, STRCPY_RESULT (dst, len));
ret = 1;
return;
}
if (strcmp (dst, src) != 0)
{
printf ("Wrong result in function %s dst \"%s\" src \"%s\"\n",
impl->name, dst, src);
ret = 1;
return;
}
TIMING_NOW (start);
for (i = 0; i < iters; ++i)
{
CALL (impl, dst, src, dlen);
}
TIMING_NOW (stop);
TIMING_DIFF (cur, start, stop);
TIMING_PRINT_MEAN ((double) cur, (double) iters);
}
static void
do_test (size_t align1, size_t align2, size_t len, size_t dlen, int max_char)
{
size_t i;
char *s1, *s2;
align1 &= 7;
if (align1 + len >= page_size)
return;
align2 &= 7;
if (align2 + len >= page_size)
return;
s1 = (char *) buf1 + align1;
s2 = (char *) buf2 + align2;
for (i = 0; i < len; i++)
s1[i] = 32 + 23 * i % (max_char - 32);
s1[len] = 0;
if (dlen > len)
printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
FOR_EACH_IMPL (impl, 0)
do_one_test (impl, s2, s1, len, dlen);
if (dlen > len)
putchar ('\n');
}
static int
test_main (void)
{
size_t i;
set_fortify_handler (handler);
test_init ();
printf ("%23s", "");
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);
putchar ('\n');
for (i = 0; i < 16; ++i)
{
do_test (0, 0, i, i + 1, 127);
do_test (0, 0, i, i + 1, 255);
do_test (0, i, i, i + 1, 127);
do_test (i, 0, i, i + 1, 255);
}
for (i = 1; i < 8; ++i)
{
do_test (0, 0, 8 << i, (8 << i) + 1, 127);
do_test (8 - i, 2 * i, (8 << i), (8 << i) + 1, 127);
}
for (i = 1; i < 8; ++i)
{
do_test (i, 2 * i, (8 << i), (8 << i) + 1, 127);
do_test (2 * i, i, (8 << i), (8 << i) + 1, 255);
do_test (i, i, (8 << i), (8 << i) + 1, 127);
do_test (i, i, (8 << i), (8 << i) + 1, 255);
}
for (i = 0; i < 16; ++i)
{
do_test (0, 0, i, i + 256, 127);
do_test (0, 0, i, i + 256, 255);
do_test (0, i, i, i + 256, 127);
do_test (i, 0, i, i + 256, 255);
}
for (i = 1; i < 8; ++i)
{
do_test (0, 0, 8 << i, (8 << i) + 256, 127);
do_test (8 - i, 2 * i, (8 << i), (8 << i) + 256, 127);
}
for (i = 1; i < 8; ++i)
{
do_test (i, 2 * i, (8 << i), (8 << i) + 256, 127);
do_test (2 * i, i, (8 << i), (8 << i) + 256, 255);
do_test (i, i, (8 << i), (8 << i) + 256, 127);
do_test (i, i, (8 << i), (8 << i) + 256, 255);
}
for (i = 0; i < 16; ++i)
{
do_test (0, 0, i, i, 127);
do_test (0, 0, i, i + 2, 255);
do_test (0, i, i, i + 3, 127);
do_test (i, 0, i, i + 4, 255);
}
for (i = 1; i < 8; ++i)
{
do_test (0, 0, 8 << i, (8 << i) - 15, 127);
do_test (8 - i, 2 * i, (8 << i), (8 << i) + 5, 127);
}
for (i = 1; i < 8; ++i)
{
do_test (i, 2 * i, (8 << i), (8 << i) + i, 127);
do_test (2 * i, i, (8 << i), (8 << i) + (i - 1), 255);
do_test (i, i, (8 << i), (8 << i) + i + 2, 127);
do_test (i, i, (8 << i), (8 << i) + i + 3, 255);
}
return 0;
}
#include <support/test-driver.c>
|
