1 /* Measure __strcpy_chk functions.
2 Copyright (C) 2013-2014 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
20 # define STRCPY_RESULT(dst, len) dst
22 # define TEST_NAME "strcpy_chk"
23 # include "bench-string.h"
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
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)
32 extern char *__strcpy_chk (char *, const char *, size_t);
34 IMPL (simple_strcpy_chk, 0)
35 IMPL (normal_strcpy, 1)
36 IMPL (__strcpy_chk, 2)
39 simple_strcpy_chk (char *dst, const char *src, size_t len)
44 while ((*dst++ = *src++) != '\0')
56 volatile int chk_fail_ok;
65 longjmp (chk_fail_buf, 1);
71 typedef char *(*proto_t) (char *, const char *, size_t);
74 do_one_test (impl_t *impl, char *dst, const char *src,
75 size_t len, size_t dlen)
78 size_t i, iters = INNER_LOOP_ITERS;
79 timing_t start, stop, cur;
87 if (setjmp (chk_fail_buf) == 0)
89 res = CALL (impl, dst, src, dlen);
90 printf ("*** Function %s (%zd; %zd) did not __chk_fail\n",
91 impl->name, len, dlen);
98 res = CALL (impl, dst, src, dlen);
100 if (res != STRCPY_RESULT (dst, len))
102 printf ("Wrong result in function %s %p %p\n", impl->name,
103 res, STRCPY_RESULT (dst, len));
108 if (strcmp (dst, src) != 0)
110 printf ("Wrong result in function %s dst \"%s\" src \"%s\"\n",
111 impl->name, dst, src);
117 for (i = 0; i < iters; ++i)
119 CALL (impl, dst, src, dlen);
123 TIMING_DIFF (cur, start, stop);
125 TIMING_PRINT_MEAN ((double) cur, (double) iters);
129 do_test (size_t align1, size_t align2, size_t len, size_t dlen, int max_char)
135 if (align1 + len >= page_size)
139 if (align2 + len >= page_size)
142 s1 = (char *) buf1 + align1;
143 s2 = (char *) buf2 + align2;
145 for (i = 0; i < len; i++)
146 s1[i] = 32 + 23 * i % (max_char - 32);
150 printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
152 FOR_EACH_IMPL (impl, 0)
153 do_one_test (impl, s2, s1, len, dlen);
165 sa.sa_handler = handler;
167 sigemptyset (&sa.sa_mask);
169 sigaction (SIGABRT, &sa, NULL);
171 /* Avoid all the buffer overflow messages on stderr. */
172 int fd = open (_PATH_DEVNULL, O_WRONLY);
174 close (STDERR_FILENO);
177 dup2 (fd, STDERR_FILENO);
180 setenv ("LIBC_FATAL_STDERR_", "1", 1);
185 FOR_EACH_IMPL (impl, 0)
186 printf ("\t%s", impl->name);
189 for (i = 0; i < 16; ++i)
191 do_test (0, 0, i, i + 1, 127);
192 do_test (0, 0, i, i + 1, 255);
193 do_test (0, i, i, i + 1, 127);
194 do_test (i, 0, i, i + 1, 255);
197 for (i = 1; i < 8; ++i)
199 do_test (0, 0, 8 << i, (8 << i) + 1, 127);
200 do_test (8 - i, 2 * i, (8 << i), (8 << i) + 1, 127);
203 for (i = 1; i < 8; ++i)
205 do_test (i, 2 * i, (8 << i), (8 << i) + 1, 127);
206 do_test (2 * i, i, (8 << i), (8 << i) + 1, 255);
207 do_test (i, i, (8 << i), (8 << i) + 1, 127);
208 do_test (i, i, (8 << i), (8 << i) + 1, 255);
211 for (i = 0; i < 16; ++i)
213 do_test (0, 0, i, i + 256, 127);
214 do_test (0, 0, i, i + 256, 255);
215 do_test (0, i, i, i + 256, 127);
216 do_test (i, 0, i, i + 256, 255);
219 for (i = 1; i < 8; ++i)
221 do_test (0, 0, 8 << i, (8 << i) + 256, 127);
222 do_test (8 - i, 2 * i, (8 << i), (8 << i) + 256, 127);
225 for (i = 1; i < 8; ++i)
227 do_test (i, 2 * i, (8 << i), (8 << i) + 256, 127);
228 do_test (2 * i, i, (8 << i), (8 << i) + 256, 255);
229 do_test (i, i, (8 << i), (8 << i) + 256, 127);
230 do_test (i, i, (8 << i), (8 << i) + 256, 255);
233 for (i = 0; i < 16; ++i)
235 do_test (0, 0, i, i, 127);
236 do_test (0, 0, i, i + 2, 255);
237 do_test (0, i, i, i + 3, 127);
238 do_test (i, 0, i, i + 4, 255);
241 for (i = 1; i < 8; ++i)
243 do_test (0, 0, 8 << i, (8 << i) - 15, 127);
244 do_test (8 - i, 2 * i, (8 << i), (8 << i) + 5, 127);
247 for (i = 1; i < 8; ++i)
249 do_test (i, 2 * i, (8 << i), (8 << i) + i, 127);
250 do_test (2 * i, i, (8 << i), (8 << i) + (i - 1), 255);
251 do_test (i, i, (8 << i), (8 << i) + i + 2, 127);
252 do_test (i, i, (8 << i), (8 << i) + i + 3, 255);
258 #include "../test-skeleton.c"