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94aca5e7 | 1 | /* Measure __strcpy_chk functions. |
bfff8b1b | 2 | Copyright (C) 2013-2017 Free Software Foundation, Inc. |
94aca5e7 SP |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #ifndef STRCPY_RESULT | |
20 | # define STRCPY_RESULT(dst, len) dst | |
21 | # define TEST_MAIN | |
22 | # define TEST_NAME "strcpy_chk" | |
23 | # include "bench-string.h" | |
24 | ||
25 | /* This test case implicitly tests the availability of the __chk_fail | |
26 | symbol, which is part of the public ABI and may be used | |
27 | externally. */ | |
28 | extern void __attribute__ ((noreturn)) __chk_fail (void); | |
29 | char *simple_strcpy_chk (char *, const char *, size_t); | |
30 | extern char *normal_strcpy (char *, const char *, size_t) | |
31 | __asm ("strcpy"); | |
32 | extern char *__strcpy_chk (char *, const char *, size_t); | |
33 | ||
34 | IMPL (simple_strcpy_chk, 0) | |
35 | IMPL (normal_strcpy, 1) | |
36 | IMPL (__strcpy_chk, 2) | |
37 | ||
38 | char * | |
39 | simple_strcpy_chk (char *dst, const char *src, size_t len) | |
40 | { | |
41 | char *ret = dst; | |
42 | if (! len) | |
43 | __chk_fail (); | |
44 | while ((*dst++ = *src++) != '\0') | |
45 | if (--len == 0) | |
46 | __chk_fail (); | |
47 | return ret; | |
48 | } | |
49 | #endif | |
50 | ||
51 | #include <fcntl.h> | |
52 | #include <paths.h> | |
53 | #include <setjmp.h> | |
54 | #include <signal.h> | |
55 | ||
b598e134 | 56 | #include <support/support.h> |
c5bb8e23 | 57 | |
94aca5e7 SP |
58 | volatile int chk_fail_ok; |
59 | jmp_buf chk_fail_buf; | |
60 | ||
61 | static void | |
62 | handler (int sig) | |
63 | { | |
64 | if (chk_fail_ok) | |
65 | { | |
66 | chk_fail_ok = 0; | |
67 | longjmp (chk_fail_buf, 1); | |
68 | } | |
69 | else | |
70 | _exit (127); | |
71 | } | |
72 | ||
73 | typedef char *(*proto_t) (char *, const char *, size_t); | |
74 | ||
75 | static void | |
76 | do_one_test (impl_t *impl, char *dst, const char *src, | |
77 | size_t len, size_t dlen) | |
78 | { | |
79 | char *res; | |
44558701 WN |
80 | size_t i, iters = INNER_LOOP_ITERS; |
81 | timing_t start, stop, cur; | |
82 | ||
94aca5e7 SP |
83 | if (dlen <= len) |
84 | { | |
85 | if (impl->test == 1) | |
86 | return; | |
87 | ||
88 | chk_fail_ok = 1; | |
89 | if (setjmp (chk_fail_buf) == 0) | |
90 | { | |
91 | res = CALL (impl, dst, src, dlen); | |
92 | printf ("*** Function %s (%zd; %zd) did not __chk_fail\n", | |
93 | impl->name, len, dlen); | |
94 | chk_fail_ok = 0; | |
95 | ret = 1; | |
96 | } | |
97 | return; | |
98 | } | |
99 | else | |
100 | res = CALL (impl, dst, src, dlen); | |
101 | ||
102 | if (res != STRCPY_RESULT (dst, len)) | |
103 | { | |
104 | printf ("Wrong result in function %s %p %p\n", impl->name, | |
105 | res, STRCPY_RESULT (dst, len)); | |
106 | ret = 1; | |
107 | return; | |
108 | } | |
109 | ||
110 | if (strcmp (dst, src) != 0) | |
111 | { | |
112 | printf ("Wrong result in function %s dst \"%s\" src \"%s\"\n", | |
113 | impl->name, dst, src); | |
114 | ret = 1; | |
115 | return; | |
116 | } | |
117 | ||
44558701 WN |
118 | TIMING_NOW (start); |
119 | for (i = 0; i < iters; ++i) | |
94aca5e7 | 120 | { |
44558701 WN |
121 | CALL (impl, dst, src, dlen); |
122 | } | |
123 | TIMING_NOW (stop); | |
94aca5e7 | 124 | |
44558701 | 125 | TIMING_DIFF (cur, start, stop); |
94aca5e7 | 126 | |
44558701 | 127 | TIMING_PRINT_MEAN ((double) cur, (double) iters); |
94aca5e7 SP |
128 | } |
129 | ||
130 | static void | |
131 | do_test (size_t align1, size_t align2, size_t len, size_t dlen, int max_char) | |
132 | { | |
133 | size_t i; | |
134 | char *s1, *s2; | |
135 | ||
136 | align1 &= 7; | |
137 | if (align1 + len >= page_size) | |
138 | return; | |
139 | ||
140 | align2 &= 7; | |
141 | if (align2 + len >= page_size) | |
142 | return; | |
143 | ||
144 | s1 = (char *) buf1 + align1; | |
145 | s2 = (char *) buf2 + align2; | |
146 | ||
147 | for (i = 0; i < len; i++) | |
148 | s1[i] = 32 + 23 * i % (max_char - 32); | |
149 | s1[len] = 0; | |
150 | ||
44558701 | 151 | if (dlen > len) |
94aca5e7 SP |
152 | printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2); |
153 | ||
154 | FOR_EACH_IMPL (impl, 0) | |
155 | do_one_test (impl, s2, s1, len, dlen); | |
156 | ||
44558701 | 157 | if (dlen > len) |
94aca5e7 SP |
158 | putchar ('\n'); |
159 | } | |
160 | ||
c5bb8e23 | 161 | static int |
94aca5e7 SP |
162 | test_main (void) |
163 | { | |
164 | size_t i; | |
165 | ||
c5bb8e23 | 166 | set_fortify_handler (handler); |
94aca5e7 SP |
167 | |
168 | test_init (); | |
169 | ||
170 | printf ("%23s", ""); | |
171 | FOR_EACH_IMPL (impl, 0) | |
172 | printf ("\t%s", impl->name); | |
173 | putchar ('\n'); | |
174 | ||
175 | for (i = 0; i < 16; ++i) | |
176 | { | |
177 | do_test (0, 0, i, i + 1, 127); | |
178 | do_test (0, 0, i, i + 1, 255); | |
179 | do_test (0, i, i, i + 1, 127); | |
180 | do_test (i, 0, i, i + 1, 255); | |
181 | } | |
182 | ||
183 | for (i = 1; i < 8; ++i) | |
184 | { | |
185 | do_test (0, 0, 8 << i, (8 << i) + 1, 127); | |
186 | do_test (8 - i, 2 * i, (8 << i), (8 << i) + 1, 127); | |
187 | } | |
188 | ||
189 | for (i = 1; i < 8; ++i) | |
190 | { | |
191 | do_test (i, 2 * i, (8 << i), (8 << i) + 1, 127); | |
192 | do_test (2 * i, i, (8 << i), (8 << i) + 1, 255); | |
193 | do_test (i, i, (8 << i), (8 << i) + 1, 127); | |
194 | do_test (i, i, (8 << i), (8 << i) + 1, 255); | |
195 | } | |
196 | ||
197 | for (i = 0; i < 16; ++i) | |
198 | { | |
199 | do_test (0, 0, i, i + 256, 127); | |
200 | do_test (0, 0, i, i + 256, 255); | |
201 | do_test (0, i, i, i + 256, 127); | |
202 | do_test (i, 0, i, i + 256, 255); | |
203 | } | |
204 | ||
205 | for (i = 1; i < 8; ++i) | |
206 | { | |
207 | do_test (0, 0, 8 << i, (8 << i) + 256, 127); | |
208 | do_test (8 - i, 2 * i, (8 << i), (8 << i) + 256, 127); | |
209 | } | |
210 | ||
211 | for (i = 1; i < 8; ++i) | |
212 | { | |
213 | do_test (i, 2 * i, (8 << i), (8 << i) + 256, 127); | |
214 | do_test (2 * i, i, (8 << i), (8 << i) + 256, 255); | |
215 | do_test (i, i, (8 << i), (8 << i) + 256, 127); | |
216 | do_test (i, i, (8 << i), (8 << i) + 256, 255); | |
217 | } | |
218 | ||
219 | for (i = 0; i < 16; ++i) | |
220 | { | |
221 | do_test (0, 0, i, i, 127); | |
222 | do_test (0, 0, i, i + 2, 255); | |
223 | do_test (0, i, i, i + 3, 127); | |
224 | do_test (i, 0, i, i + 4, 255); | |
225 | } | |
226 | ||
227 | for (i = 1; i < 8; ++i) | |
228 | { | |
229 | do_test (0, 0, 8 << i, (8 << i) - 15, 127); | |
230 | do_test (8 - i, 2 * i, (8 << i), (8 << i) + 5, 127); | |
231 | } | |
232 | ||
233 | for (i = 1; i < 8; ++i) | |
234 | { | |
235 | do_test (i, 2 * i, (8 << i), (8 << i) + i, 127); | |
236 | do_test (2 * i, i, (8 << i), (8 << i) + (i - 1), 255); | |
237 | do_test (i, i, (8 << i), (8 << i) + i + 2, 127); | |
238 | do_test (i, i, (8 << i), (8 << i) + i + 3, 255); | |
239 | } | |
240 | ||
241 | return 0; | |
242 | } | |
b598e134 AZ |
243 | |
244 | #include <support/test-driver.c> |