1 /* Test and measure memmove functions.
2 Copyright (C) 1999, 2002, 2003 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, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 #include "test-string.h"
24 typedef char *(*proto_t) (char *, const char *, size_t);
25 char *simple_memmove (char *, const char *, size_t);
27 IMPL (simple_memmove, 0)
31 simple_memmove (char *dst, const char *src, size_t n)
48 do_one_test (impl_t *impl, char *dst, char *src, const char *orig_src,
53 memcpy (src, orig_src, len);
54 res = CALL (impl, dst, src, len);
57 error (0, 0, "Wrong result in function %s %p %p", impl->name,
63 if (memcmp (dst, orig_src, len) != 0)
65 error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
66 impl->name, dst, src);
73 hp_timing_t start __attribute ((unused));
74 hp_timing_t stop __attribute ((unused));
75 hp_timing_t best_time = ~ (hp_timing_t) 0;
78 for (i = 0; i < 32; ++i)
80 HP_TIMING_NOW (start);
81 CALL (impl, dst, src, len);
83 HP_TIMING_BEST (best_time, start, stop);
86 printf ("\t%zd", (size_t) best_time);
91 do_test (size_t align1, size_t align2, size_t len)
97 if (align1 + len >= page_size)
101 if (align2 + len >= page_size)
104 s1 = (char *) (buf1 + align1);
105 s2 = (char *) (buf2 + align2);
107 for (i = 0, j = 1; i < len; i++, j += 23)
111 printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
113 FOR_EACH_IMPL (impl, 0)
114 do_one_test (impl, s2, (char *) (buf2 + align1), s1, len);
121 do_random_tests (void)
123 size_t i, n, align1, align2, len, size;
124 size_t srcstart, srcend, dststart, dstend;
126 unsigned char *p1, *p2;
129 for (n = 0; n < ITERATIONS; n++)
131 if ((random () & 255) == 0)
135 if (size > page_size)
137 if ((random () & 3) == 0)
139 len = random () & (size - 1);
140 align1 = size - len - (random () & 31);
141 align2 = size - len - (random () & 31);
149 align1 = random () & (size / 2 - 1);
150 align2 = random () & (size / 2 - 1);
151 len = random () & (size - 1);
152 if (align1 + len > size)
154 if (align2 + len > size)
158 p1 = buf1 + page_size - size;
159 p2 = buf2 + page_size - size;
161 srcend = align1 + len + 256;
165 srcstart = align1 - 256;
168 for (i = srcstart; i < srcend; ++i)
169 p1[i] = random () & 255;
170 dstend = align2 + len + 256;
174 dststart = align2 - 256;
178 FOR_EACH_IMPL (impl, 1)
180 memset (p2 + dststart, c, dstend - dststart);
181 memcpy (p2 + srcstart, p1 + srcstart, srcend - srcstart);
182 res = (unsigned char *) CALL (impl,
183 (char *) (p2 + align2),
184 (char *) (p2 + align1), len);
185 if (res != p2 + align2)
187 error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
188 n, impl->name, align1, align2, len, res, p2 + align2);
191 if (memcmp (p1 + align1, p2 + align2, len))
193 error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
194 n, impl->name, align1, align2, len);
197 for (i = dststart; i < dstend; ++i)
199 if (i >= align2 && i < align2 + len)
201 i = align2 + len - 1;
204 if (i >= srcstart && i < srcend)
211 error (0, 0, "Iteration %zd - garbage in memset area, %s (%zd, %zd, %zd)",
212 n, impl->name, align1, align2, len);
218 if (srcstart < align2
219 && memcmp (p2 + srcstart, p1 + srcstart,
220 (srcend > align2 ? align2 : srcend) - srcstart))
222 error (0, 0, "Iteration %zd - garbage before dst, %s (%zd, %zd, %zd)",
223 n, impl->name, align1, align2, len);
228 i = srcstart > align2 + len ? srcstart : align2 + len;
229 if (srcend > align2 + len
230 && memcmp (p2 + i, p1 + i, srcend - i))
232 error (0, 0, "Iteration %zd - garbage after dst, %s (%zd, %zd, %zd)",
233 n, impl->name, align1, align2, len);
249 FOR_EACH_IMPL (impl, 0)
250 printf ("\t%s", impl->name);
253 for (i = 0; i < 14; ++i)
255 do_test (0, 32, 1 << i);
256 do_test (32, 0, 1 << i);
257 do_test (0, i, 1 << i);
258 do_test (i, 0, 1 << i);
261 for (i = 0; i < 32; ++i)
269 for (i = 3; i < 32; ++i)
271 if ((i & (i - 1)) == 0)
273 do_test (0, 32, 16 * i);
274 do_test (32, 0, 16 * i);
275 do_test (0, i, 16 * i);
276 do_test (i, 0, 16 * i);
283 #include "../test-skeleton.c"