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Diffstat (limited to 'REORG.TODO/string/test-memset.c')
| -rw-r--r-- | REORG.TODO/string/test-memset.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/REORG.TODO/string/test-memset.c b/REORG.TODO/string/test-memset.c new file mode 100644 index 0000000000..ca1bfe1e3b --- /dev/null +++ b/REORG.TODO/string/test-memset.c @@ -0,0 +1,267 @@ +/* Test memset 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/>. */ + +#define TEST_MAIN +#ifdef TEST_BZERO +# ifdef TEST_EXPLICIT_BZERO +# define TEST_NAME "explicit_bzero" +# else +# define TEST_NAME "bzero" +# endif +#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) +#ifdef TEST_EXPLICIT_BZERO +IMPL (explicit_bzero, 1) +#else +IMPL (bzero, 1) +#endif + +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 <support/test-driver.c> |