1 | /* Measure __strcpy_chk functions. |
2 | Copyright (C) 2013-2024 Free Software Foundation, Inc. |
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 | <https://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 | extern char *normal_strcpy (char *, const char *, size_t) |
30 | __asm ("strcpy" ); |
31 | extern char *__strcpy_chk (char *, const char *, size_t); |
32 | |
33 | IMPL (normal_strcpy, 1) |
34 | IMPL (__strcpy_chk, 2) |
35 | |
36 | #endif |
37 | |
38 | #include <fcntl.h> |
39 | #include <paths.h> |
40 | #include <setjmp.h> |
41 | #include <signal.h> |
42 | |
43 | #include <support/support.h> |
44 | |
45 | volatile int chk_fail_ok; |
46 | jmp_buf chk_fail_buf; |
47 | |
48 | static void |
49 | handler (int sig) |
50 | { |
51 | if (chk_fail_ok) |
52 | { |
53 | chk_fail_ok = 0; |
54 | longjmp (chk_fail_buf, 1); |
55 | } |
56 | else |
57 | _exit (127); |
58 | } |
59 | |
60 | typedef char *(*proto_t) (char *, const char *, size_t); |
61 | |
62 | static void |
63 | do_one_test (impl_t *impl, char *dst, const char *src, |
64 | size_t len, size_t dlen) |
65 | { |
66 | char *res; |
67 | size_t i, iters = INNER_LOOP_ITERS_LARGE; |
68 | timing_t start, stop, cur; |
69 | |
70 | if (dlen <= len) |
71 | { |
72 | if (impl->test == 1) |
73 | return; |
74 | |
75 | chk_fail_ok = 1; |
76 | if (setjmp (chk_fail_buf) == 0) |
77 | { |
78 | res = CALL (impl, dst, src, dlen); |
79 | printf (format: "*** Function %s (%zd; %zd) did not __chk_fail\n" , |
80 | impl->name, len, dlen); |
81 | chk_fail_ok = 0; |
82 | ret = 1; |
83 | } |
84 | return; |
85 | } |
86 | else |
87 | res = CALL (impl, dst, src, dlen); |
88 | |
89 | if (res != STRCPY_RESULT (dst, len)) |
90 | { |
91 | printf (format: "Wrong result in function %s %p %p\n" , impl->name, |
92 | res, STRCPY_RESULT (dst, len)); |
93 | ret = 1; |
94 | return; |
95 | } |
96 | |
97 | if (strcmp (dst, src) != 0) |
98 | { |
99 | printf (format: "Wrong result in function %s dst \"%s\" src \"%s\"\n" , |
100 | impl->name, dst, src); |
101 | ret = 1; |
102 | return; |
103 | } |
104 | |
105 | TIMING_NOW (start); |
106 | for (i = 0; i < iters; ++i) |
107 | { |
108 | CALL (impl, dst, src, dlen); |
109 | } |
110 | TIMING_NOW (stop); |
111 | |
112 | TIMING_DIFF (cur, start, stop); |
113 | |
114 | TIMING_PRINT_MEAN ((double) cur, (double) iters); |
115 | } |
116 | |
117 | static void |
118 | do_test (size_t align1, size_t align2, size_t len, size_t dlen, int max_char) |
119 | { |
120 | size_t i; |
121 | char *s1, *s2; |
122 | |
123 | align1 &= 7; |
124 | if (align1 + len >= page_size) |
125 | return; |
126 | |
127 | align2 &= 7; |
128 | if (align2 + len >= page_size) |
129 | return; |
130 | |
131 | s1 = (char *) buf1 + align1; |
132 | s2 = (char *) buf2 + align2; |
133 | |
134 | for (i = 0; i < len; i++) |
135 | s1[i] = 32 + 23 * i % (max_char - 32); |
136 | s1[len] = 0; |
137 | |
138 | if (dlen > len) |
139 | printf (format: "Length %4zd, alignment %2zd/%2zd:" , len, align1, align2); |
140 | |
141 | FOR_EACH_IMPL (impl, 0) |
142 | do_one_test (impl, dst: s2, src: s1, len, dlen); |
143 | |
144 | if (dlen > len) |
145 | putchar (c: '\n'); |
146 | } |
147 | |
148 | static int |
149 | test_main (void) |
150 | { |
151 | size_t i; |
152 | |
153 | set_fortify_handler (handler); |
154 | |
155 | test_init (); |
156 | |
157 | printf (format: "%23s" , "" ); |
158 | FOR_EACH_IMPL (impl, 0) |
159 | printf (format: "\t%s" , impl->name); |
160 | putchar (c: '\n'); |
161 | |
162 | for (i = 0; i < 16; ++i) |
163 | { |
164 | do_test (align1: 0, align2: 0, len: i, dlen: i + 1, max_char: 127); |
165 | do_test (align1: 0, align2: 0, len: i, dlen: i + 1, max_char: 255); |
166 | do_test (align1: 0, align2: i, len: i, dlen: i + 1, max_char: 127); |
167 | do_test (align1: i, align2: 0, len: i, dlen: i + 1, max_char: 255); |
168 | } |
169 | |
170 | for (i = 1; i < 8; ++i) |
171 | { |
172 | do_test (align1: 0, align2: 0, len: 8 << i, dlen: (8 << i) + 1, max_char: 127); |
173 | do_test (align1: 8 - i, align2: 2 * i, len: (8 << i), dlen: (8 << i) + 1, max_char: 127); |
174 | } |
175 | |
176 | for (i = 1; i < 8; ++i) |
177 | { |
178 | do_test (align1: i, align2: 2 * i, len: (8 << i), dlen: (8 << i) + 1, max_char: 127); |
179 | do_test (align1: 2 * i, align2: i, len: (8 << i), dlen: (8 << i) + 1, max_char: 255); |
180 | do_test (align1: i, align2: i, len: (8 << i), dlen: (8 << i) + 1, max_char: 127); |
181 | do_test (align1: i, align2: i, len: (8 << i), dlen: (8 << i) + 1, max_char: 255); |
182 | } |
183 | |
184 | for (i = 0; i < 16; ++i) |
185 | { |
186 | do_test (align1: 0, align2: 0, len: i, dlen: i + 256, max_char: 127); |
187 | do_test (align1: 0, align2: 0, len: i, dlen: i + 256, max_char: 255); |
188 | do_test (align1: 0, align2: i, len: i, dlen: i + 256, max_char: 127); |
189 | do_test (align1: i, align2: 0, len: i, dlen: i + 256, max_char: 255); |
190 | } |
191 | |
192 | for (i = 1; i < 8; ++i) |
193 | { |
194 | do_test (align1: 0, align2: 0, len: 8 << i, dlen: (8 << i) + 256, max_char: 127); |
195 | do_test (align1: 8 - i, align2: 2 * i, len: (8 << i), dlen: (8 << i) + 256, max_char: 127); |
196 | } |
197 | |
198 | for (i = 1; i < 8; ++i) |
199 | { |
200 | do_test (align1: i, align2: 2 * i, len: (8 << i), dlen: (8 << i) + 256, max_char: 127); |
201 | do_test (align1: 2 * i, align2: i, len: (8 << i), dlen: (8 << i) + 256, max_char: 255); |
202 | do_test (align1: i, align2: i, len: (8 << i), dlen: (8 << i) + 256, max_char: 127); |
203 | do_test (align1: i, align2: i, len: (8 << i), dlen: (8 << i) + 256, max_char: 255); |
204 | } |
205 | |
206 | for (i = 0; i < 16; ++i) |
207 | { |
208 | do_test (align1: 0, align2: 0, len: i, dlen: i, max_char: 127); |
209 | do_test (align1: 0, align2: 0, len: i, dlen: i + 2, max_char: 255); |
210 | do_test (align1: 0, align2: i, len: i, dlen: i + 3, max_char: 127); |
211 | do_test (align1: i, align2: 0, len: i, dlen: i + 4, max_char: 255); |
212 | } |
213 | |
214 | for (i = 1; i < 8; ++i) |
215 | { |
216 | do_test (align1: 0, align2: 0, len: 8 << i, dlen: (8 << i) - 15, max_char: 127); |
217 | do_test (align1: 8 - i, align2: 2 * i, len: (8 << i), dlen: (8 << i) + 5, max_char: 127); |
218 | } |
219 | |
220 | for (i = 1; i < 8; ++i) |
221 | { |
222 | do_test (align1: i, align2: 2 * i, len: (8 << i), dlen: (8 << i) + i, max_char: 127); |
223 | do_test (align1: 2 * i, align2: i, len: (8 << i), dlen: (8 << i) + (i - 1), max_char: 255); |
224 | do_test (align1: i, align2: i, len: (8 << i), dlen: (8 << i) + i + 2, max_char: 127); |
225 | do_test (align1: i, align2: i, len: (8 << i), dlen: (8 << i) + i + 3, max_char: 255); |
226 | } |
227 | |
228 | return 0; |
229 | } |
230 | |
231 | #include <support/test-driver.c> |
232 | |