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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /string/test-memcpy.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-zack/build-layout-experiment.tar glibc-zack/build-layout-experiment.tar.gz glibc-zack/build-layout-experiment.tar.bz2 glibc-zack/build-layout-experiment.zip |
Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
Diffstat (limited to 'string/test-memcpy.c')
-rw-r--r-- | string/test-memcpy.c | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/string/test-memcpy.c b/string/test-memcpy.c deleted file mode 100644 index 49f0a76047..0000000000 --- a/string/test-memcpy.c +++ /dev/null @@ -1,259 +0,0 @@ -/* Test and measure memcpy functions. - Copyright (C) 1999-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Written by Jakub Jelinek <jakub@redhat.com>, 1999. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#ifndef MEMCPY_RESULT -# define MEMCPY_RESULT(dst, len) dst -# define MIN_PAGE_SIZE 131072 -# define TEST_MAIN -# define TEST_NAME "memcpy" -# include "test-string.h" - -char *simple_memcpy (char *, const char *, size_t); -char *builtin_memcpy (char *, const char *, size_t); - -IMPL (simple_memcpy, 0) -IMPL (builtin_memcpy, 0) -IMPL (memcpy, 1) - -char * -simple_memcpy (char *dst, const char *src, size_t n) -{ - char *ret = dst; - while (n--) - *dst++ = *src++; - return ret; -} - -char * -builtin_memcpy (char *dst, const char *src, size_t n) -{ - return __builtin_memcpy (dst, src, n); -} -#endif - -typedef char *(*proto_t) (char *, const char *, size_t); - -static void -do_one_test (impl_t *impl, char *dst, const char *src, - size_t len) -{ - size_t i; - - /* Must clear the destination buffer set by the previous run. */ - for (i = 0; i < len; i++) - dst[i] = 0; - - if (CALL (impl, dst, src, len) != MEMCPY_RESULT (dst, len)) - { - error (0, 0, "Wrong result in function %s %p %p", impl->name, - CALL (impl, dst, src, len), MEMCPY_RESULT (dst, len)); - ret = 1; - return; - } - - if (memcmp (dst, src, len) != 0) - { - error (0, 0, "Wrong result in function %s dst %p \"%.*s\" src %p \"%.*s\" len %zu", - impl->name, dst, (int) len, dst, src, (int) len, src, len); - ret = 1; - return; - } -} - -static void -do_test (size_t align1, size_t align2, size_t len) -{ - size_t i, j; - char *s1, *s2; - - align1 &= 63; - if (align1 + len >= page_size) - return; - - align2 &= 63; - if (align2 + len >= page_size) - return; - - s1 = (char *) (buf1 + align1); - s2 = (char *) (buf2 + align2); - - for (i = 0, j = 1; i < len; i++, j += 23) - s1[i] = j; - - FOR_EACH_IMPL (impl, 0) - do_one_test (impl, s2, s1, len); -} - -static void -do_random_tests (void) -{ - size_t i, j, n, align1, align2, len, size1, size2, size; - int c; - unsigned char *p1, *p2; - unsigned char *res; - - for (n = 0; n < ITERATIONS; n++) - { - if (n == 0) - { - len = getpagesize (); - size = len + 512; - size1 = size; - size2 = size; - align1 = 512; - align2 = 512; - } - else - { - if ((random () & 255) == 0) - size = 65536; - else - size = 768; - if (size > page_size) - size = page_size; - size1 = size; - size2 = size; - i = random (); - if (i & 3) - size -= 256; - if (i & 1) - size1 -= 256; - if (i & 2) - size2 -= 256; - if (i & 4) - { - len = random () % size; - align1 = size1 - len - (random () & 31); - align2 = size2 - len - (random () & 31); - if (align1 > size1) - align1 = 0; - if (align2 > size2) - align2 = 0; - } - else - { - align1 = random () & 63; - align2 = random () & 63; - len = random () % size; - if (align1 + len > size1) - align1 = size1 - len; - if (align2 + len > size2) - align2 = size2 - len; - } - } - p1 = buf1 + page_size - size1; - p2 = buf2 + page_size - size2; - c = random () & 255; - j = align1 + len + 256; - if (j > size1) - j = size1; - for (i = 0; i < j; ++i) - p1[i] = random () & 255; - - FOR_EACH_IMPL (impl, 1) - { - j = align2 + len + 256; - if (j > size2) - j = size2; - memset (p2, c, j); - res = (unsigned char *) CALL (impl, - (char *) (p2 + align2), - (char *) (p1 + align1), len); - if (res != MEMCPY_RESULT (p2 + align2, len)) - { - error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p", - n, impl->name, align1, align2, len, res, - MEMCPY_RESULT (p2 + align2, len)); - ret = 1; - } - for (i = 0; i < align2; ++i) - { - if (p2[i] != c) - { - error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)", - n, impl->name, align1, align2, len); - ret = 1; - break; - } - } - for (i = align2 + len; i < j; ++i) - { - if (p2[i] != c) - { - error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)", - n, impl->name, align1, align2, len); - ret = 1; - break; - } - } - if (memcmp (p1 + align1, p2 + align2, len)) - { - error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)", - n, impl->name, align1, align2, len); - ret = 1; - } - } - } -} - -int -test_main (void) -{ - size_t i; - - test_init (); - - printf ("%23s", ""); - FOR_EACH_IMPL (impl, 0) - printf ("\t%s", impl->name); - putchar ('\n'); - - for (i = 0; i < 18; ++i) - { - do_test (0, 0, 1 << i); - do_test (i, 0, 1 << i); - do_test (0, i, 1 << i); - do_test (i, i, 1 << i); - } - - for (i = 0; i < 32; ++i) - { - do_test (0, 0, i); - do_test (i, 0, i); - do_test (0, i, i); - do_test (i, i, i); - } - - for (i = 3; i < 32; ++i) - { - if ((i & (i - 1)) == 0) - continue; - do_test (0, 0, 16 * i); - do_test (i, 0, 16 * i); - do_test (0, i, 16 * i); - do_test (i, i, 16 * i); - } - - do_test (0, 0, getpagesize ()); - - do_random_tests (); - return ret; -} - -#include <support/test-driver.c> |