Permalink
Cannot retrieve contributors at this time
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
glibc/string/test-memset.c
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
259 lines (232 sloc)
5.54 KB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* Test memset functions. | |
Copyright (C) 1999-2016 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/>. */ | |
#define TEST_MAIN | |
#ifdef TEST_BZERO | |
# define TEST_NAME "bzero" | |
#else | |
# ifndef WIDE | |
# define TEST_NAME "memset" | |
# else | |
# define TEST_NAME "wmemset" | |
# endif /* WIDE */ | |
#endif /* !TEST_BZERO */ | |
#define MIN_PAGE_SIZE 131072 | |
#include "test-string.h" | |
#ifndef WIDE | |
# define MEMSET memset | |
# define CHAR char | |
# define UCHAR unsigned char | |
# define SIMPLE_MEMSET simple_memset | |
# define MEMCMP memcmp | |
# define BIG_CHAR CHAR_MAX | |
#else | |
# include <wchar.h> | |
# define MEMSET wmemset | |
# define CHAR wchar_t | |
# define UCHAR wchar_t | |
# define SIMPLE_MEMSET simple_wmemset | |
# define MEMCMP wmemcmp | |
# define BIG_CHAR WCHAR_MAX | |
#endif /* WIDE */ | |
CHAR *SIMPLE_MEMSET (CHAR *, int, size_t); | |
#ifdef TEST_BZERO | |
typedef void (*proto_t) (char *, size_t); | |
void simple_bzero (char *, size_t); | |
void builtin_bzero (char *, size_t); | |
IMPL (simple_bzero, 0) | |
IMPL (builtin_bzero, 0) | |
IMPL (bzero, 1) | |
void | |
simple_bzero (char *s, size_t n) | |
{ | |
SIMPLE_MEMSET (s, 0, n); | |
} | |
void | |
builtin_bzero (char *s, size_t n) | |
{ | |
__builtin_bzero (s, n); | |
} | |
#else | |
typedef CHAR *(*proto_t) (CHAR *, int, size_t); | |
IMPL (SIMPLE_MEMSET, 0) | |
# ifndef WIDE | |
char *builtin_memset (char *, int, size_t); | |
IMPL (builtin_memset, 0) | |
# endif /* !WIDE */ | |
IMPL (MEMSET, 1) | |
# ifndef WIDE | |
char * | |
builtin_memset (char *s, int c, size_t n) | |
{ | |
return __builtin_memset (s, c, n); | |
} | |
# endif /* !WIDE */ | |
#endif /* !TEST_BZERO */ | |
CHAR * | |
inhibit_loop_to_libcall | |
SIMPLE_MEMSET (CHAR *s, int c, size_t n) | |
{ | |
CHAR *r = s, *end = s + n; | |
while (r < end) | |
*r++ = c; | |
return s; | |
} | |
static void | |
do_one_test (impl_t *impl, CHAR *s, int c __attribute ((unused)), size_t n) | |
{ | |
CHAR tstbuf[n]; | |
#ifdef TEST_BZERO | |
simple_bzero (tstbuf, n); | |
CALL (impl, s, n); | |
if (memcmp (s, tstbuf, n) != 0) | |
#else | |
CHAR *res = CALL (impl, s, c, n); | |
if (res != s | |
|| SIMPLE_MEMSET (tstbuf, c, n) != tstbuf | |
|| MEMCMP (s, tstbuf, n) != 0) | |
#endif /* !TEST_BZERO */ | |
{ | |
error (0, 0, "Wrong result in function %s", impl->name); | |
ret = 1; | |
return; | |
} | |
} | |
static void | |
do_test (size_t align, int c, size_t len) | |
{ | |
align &= 7; | |
if ((align + len) * sizeof (CHAR) > page_size) | |
return; | |
FOR_EACH_IMPL (impl, 0) | |
do_one_test (impl, (CHAR *) (buf1) + align, c, len); | |
} | |
#ifndef TEST_BZERO | |
static void | |
do_random_tests (void) | |
{ | |
size_t i, j, k, n, align, len, size; | |
int c, o; | |
UCHAR *p, *res; | |
UCHAR *p2 = (UCHAR *) buf2; | |
for (i = 0; i < 65536 / sizeof (CHAR); ++i) | |
p2[i] = random () & BIG_CHAR; | |
for (n = 0; n < ITERATIONS; n++) | |
{ | |
if ((random () & 31) == 0) | |
size = 65536 / sizeof (CHAR); | |
else | |
size = 512; | |
p = (UCHAR *) (buf1 + page_size) - size; | |
len = random () & (size - 1); | |
align = size - len - (random () & 31); | |
if (align > size) | |
align = size - len; | |
if ((random () & 7) == 0) | |
align &= ~63; | |
if ((random () & 7) == 0) | |
c = 0; | |
else | |
c = random () & BIG_CHAR; | |
o = random () & BIG_CHAR; | |
if (o == c) | |
o = (c + 1) & BIG_CHAR; | |
j = len + align + 128; | |
if (j > size) | |
j = size; | |
if (align >= 128) | |
k = align - 128; | |
else | |
k = 0; | |
for (i = k; i < align; ++i) | |
p[i] = o; | |
for (i = align + len; i < j; ++i) | |
p[i] = o; | |
FOR_EACH_IMPL (impl, 1) | |
{ | |
for (i = 0; i < len; ++i) | |
{ | |
p[i + align] = p2[i]; | |
if (p[i + align] == c) | |
p[i + align] = o; | |
} | |
res = (UCHAR *) CALL (impl, (CHAR *) p + align, c, len); | |
if (res != p + align) | |
{ | |
error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd) %p != %p", | |
n, impl->name, align, c, len, res, p + align); | |
ret = 1; | |
} | |
for (i = k; i < align; ++i) | |
if (p[i] != o) | |
{ | |
error (0, 0, "Iteration %zd - garbage before %s (%zd, %d, %zd)", | |
n, impl->name, align, c, len); | |
ret = 1; | |
break; | |
} | |
for (; i < align + len; ++i) | |
if (p[i] != c) | |
{ | |
error (0, 0, "Iteration %zd - not cleared correctly %s (%zd, %d, %zd)", | |
n, impl->name, align, c, len); | |
ret = 1; | |
break; | |
} | |
for (; i < j; ++i) | |
if (p[i] != o) | |
{ | |
error (0, 0, "Iteration %zd - garbage after %s (%zd, %d, %zd)", | |
n, impl->name, align, c, len); | |
ret = 1; | |
break; | |
} | |
} | |
} | |
} | |
#endif /* !TEST_BZERO */ | |
int | |
test_main (void) | |
{ | |
size_t i; | |
int c = 0; | |
test_init (); | |
printf ("%24s", ""); | |
FOR_EACH_IMPL (impl, 0) | |
printf ("\t%s", impl->name); | |
putchar ('\n'); | |
#ifndef TEST_BZERO | |
for (c = -65; c <= 130; c += 65) | |
#endif | |
{ | |
for (i = 0; i < 18; ++i) | |
do_test (0, c, 1 << i); | |
for (i = 1; i < 32; ++i) | |
{ | |
do_test (i, c, i); | |
if (i & (i - 1)) | |
do_test (0, c, i); | |
} | |
do_test (1, c, 14); | |
do_test (3, c, 1024); | |
do_test (4, c, 64); | |
do_test (2, c, 25); | |
} | |
#ifndef TEST_BZERO | |
do_random_tests (); | |
#endif | |
return ret; | |
} | |
#include "../test-skeleton.c" |