1 /* Test and measure memset functions.
2 Copyright (C) 1999-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written by Jakub Jelinek <jakub@redhat.com>, 1999.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
22 # define TEST_NAME "bzero"
24 # define TEST_NAME "memset"
26 #define MIN_PAGE_SIZE 131072
27 #include "test-string.h"
29 char *simple_memset (char *, int, size_t);
32 typedef void (*proto_t) (char *, size_t);
33 void simple_bzero (char *, size_t);
34 void builtin_bzero (char *, size_t);
36 IMPL (simple_bzero, 0)
37 IMPL (builtin_bzero, 0)
41 simple_bzero (char *s, size_t n)
43 simple_memset (s, 0, n);
47 builtin_bzero (char *s, size_t n)
49 __builtin_bzero (s, n);
52 typedef char *(*proto_t) (char *, int, size_t);
53 char *builtin_memset (char *, int, size_t);
55 IMPL (simple_memset, 0)
56 IMPL (builtin_memset, 0)
60 builtin_memset (char *s, int c, size_t n)
62 return __builtin_memset (s, c, n);
67 inhibit_loop_to_libcall
68 simple_memset (char *s, int c, size_t n)
70 char *r = s, *end = s + n;
77 do_one_test (impl_t *impl, char *s, int c __attribute ((unused)), size_t n)
81 simple_bzero (tstbuf, n);
83 if (memcmp (s, tstbuf, n) != 0)
85 char *res = CALL (impl, s, c, n);
87 || simple_memset (tstbuf, c, n) != tstbuf
88 || memcmp (s, tstbuf, n) != 0)
91 error (0, 0, "Wrong result in function %s", impl->name);
98 do_test (size_t align, int c, size_t len)
101 if (align + len > page_size)
104 FOR_EACH_IMPL (impl, 0)
105 do_one_test (impl, (char *) buf1 + align, c, len);
110 do_random_tests (void)
112 size_t i, j, k, n, align, len, size;
114 unsigned char *p, *res;
116 for (i = 0; i < 65536; ++i)
117 buf2[i] = random () & 255;
119 for (n = 0; n < ITERATIONS; n++)
121 if ((random () & 31) == 0)
125 p = buf1 + page_size - size;
126 len = random () & (size - 1);
127 align = size - len - (random () & 31);
130 if ((random () & 7) == 0)
132 if ((random () & 7) == 0)
139 j = len + align + 128;
146 for (i = k; i < align; ++i)
148 for (i = align + len; i < j; ++i)
151 FOR_EACH_IMPL (impl, 1)
153 for (i = 0; i < len; ++i)
155 p[i + align] = buf2[i];
156 if (p[i + align] == c)
159 res = (unsigned char *) CALL (impl, (char *) p + align, c, len);
160 if (res != p + align)
162 error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd) %p != %p",
163 n, impl->name, align, c, len, res, p + align);
166 for (i = k; i < align; ++i)
169 error (0, 0, "Iteration %zd - garbage before %s (%zd, %d, %zd)",
170 n, impl->name, align, c, len);
174 for (; i < align + len; ++i)
177 error (0, 0, "Iteration %zd - not cleared correctly %s (%zd, %d, %zd)",
178 n, impl->name, align, c, len);
185 error (0, 0, "Iteration %zd - garbage after %s (%zd, %d, %zd)",
186 n, impl->name, align, c, len);
204 FOR_EACH_IMPL (impl, 0)
205 printf ("\t%s", impl->name);
209 for (c = -65; c <= 130; c += 65)
212 for (i = 0; i < 18; ++i)
213 do_test (0, c, 1 << i);
214 for (i = 1; i < 32; ++i)
221 do_test (3, c, 1024);
233 #include "../test-skeleton.c"