/* Test and measure strcpy functions.

   Copyright (C) 1999-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Written by Jakub Jelinek <jakub@redhat.com>, 1999.

   Added wcscpy support by Liubov Dmitrieva <liubov.dmitrieva@gmail.com>, 2011

   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/>.  */

#ifdef WIDE

# include <wchar.h>

# define CHAR wchar_t

# define UCHAR wchar_t

# define sfmt "ls"

# define BIG_CHAR WCHAR_MAX

# define SMALL_CHAR 1273

# define STRCMP wcscmp

# define MEMCMP wmemcmp

# define MEMSET wmemset

#else

# define CHAR char

# define UCHAR unsigned char

# define sfmt "s"

# define BIG_CHAR CHAR_MAX

# define SMALL_CHAR 127

# define STRCMP strcmp

# define MEMCMP memcmp

# define MEMSET memset

#endif

#ifndef STRCPY_RESULT

# define STRCPY_RESULT(dst, len) dst

# define TEST_MAIN

# ifndef WIDE

#  define TEST_NAME "strcpy"

# else

#  define TEST_NAME "wcscpy"

# endif

# include "test-string.h"

# ifndef WIDE

#  define SIMPLE_STRCPY simple_strcpy

#  define STRCPY strcpy

# else

#  define SIMPLE_STRCPY simple_wcscpy

#  define STRCPY wcscpy

# endif

CHAR *SIMPLE_STRCPY (CHAR *, const CHAR *);

IMPL (SIMPLE_STRCPY, 0)

IMPL (STRCPY, 1)

CHAR *

SIMPLE_STRCPY (CHAR *dst, const CHAR *src)

{

  CHAR *ret = dst;

  while ((*dst++ = *src++) != '\0');

  return ret;

}

#endif

typedef CHAR *(*proto_t) (CHAR *, const CHAR *);

static void

do_one_test (impl_t *impl, CHAR *dst, const CHAR *src,

	     size_t len __attribute__((unused)))

{

  if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len))

    {

      error (0, 0, "Wrong result in function %s %p %p", impl->name,

	     CALL (impl, dst, src), STRCPY_RESULT (dst, len));

      ret = 1;

      return;

    }

  if (STRCMP (dst, src) != 0)

    {

      error (0, 0,

	     "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",

	     impl->name, dst, src);

      ret = 1;

      return;

    }

}

static void

do_test (size_t align1, size_t align2, size_t len, int max_char)

{

  size_t i;

  CHAR *s1, *s2;

/* For wcscpy: align1 and align2 here mean alignment not in bytes,

   but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))

   len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */

  align1 &= 7;

  if ((align1 + len) * sizeof(CHAR) >= page_size)

    return;

  align2 &= 7;

  if ((align2 + len) * sizeof(CHAR) >= page_size)

    return;

  s1 = (CHAR *) (buf1) + align1;

  s2 = (CHAR *) (buf2) + align2;

  for (i = 0; i < len; i++)

    s1[i] = 32 + 23 * i % (max_char - 32);

  s1[len] = 0;

  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;

  UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512;

  UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512;

  UCHAR *res;

  for (n = 0; n < ITERATIONS; n++)

    {

      /* For wcsrchr: align1 and align2 here mean align not in bytes,

	 but in wchar_ts, in bytes it will equal to align * (sizeof

	 (wchar_t)).  For strrchr we need to check all alignments from

	 0 to 63 since some assembly implementations have separate

	 prolog for alignments more 48. */

      align1 = random () & (63 / sizeof(CHAR));

      if (random () & 1)

	align2 = random () & (63 / sizeof(CHAR));

      else

	align2 = align1 + (random () & 24);

      len = random () & 511;

      j = align1;

      if (align2 > j)

	j = align2;

      if (len + j >= 511)

	len = 510 - j - (random () & 7);

      j = len + align1 + 64;

      if (j > 512)

	j = 512;

      for (i = 0; i < j; i++)

	{

	  if (i == len + align1)

	    p1[i] = 0;

	  else

	    {

	      p1[i] = random () & BIG_CHAR;

	      if (i >= align1 && i < len + align1 && !p1[i])

		p1[i] = (random () & SMALL_CHAR) + 3;

	    }

	}

      FOR_EACH_IMPL (impl, 1)

	{

	  MEMSET (p2 - 64, '\1', 512 + 64);

	  res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2), (CHAR *) (p1 + align1));

	  if (res != STRCPY_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,

		     STRCPY_RESULT (p2 + align2, len));

	      ret = 1;

	    }

	  for (j = 0; j < align2 + 64; ++j)

	    {

	      if (p2[j - 64] != '\1')

		{

		  error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",

			 n, impl->name, align1, align2, len);

		  ret = 1;

		  break;

		}

	    }

	  for (j = align2 + len + 1; j < 512; ++j)

	    {

	      if (p2[j] != '\1')

		{

		  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 + 1))

	    {

	      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 < 16; ++i)

    {

      do_test (0, 0, i, SMALL_CHAR);

      do_test (0, 0, i, BIG_CHAR);

      do_test (0, i, i, SMALL_CHAR);

      do_test (i, 0, i, BIG_CHAR);

    }

  for (i = 1; i < 8; ++i)

    {

      do_test (0, 0, 8 << i, SMALL_CHAR);

      do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR);

    }

  for (i = 1; i < 8; ++i)

    {

      do_test (i, 2 * i, 8 << i, SMALL_CHAR);

      do_test (2 * i, i, 8 << i, BIG_CHAR);

      do_test (i, i, 8 << i, SMALL_CHAR);

      do_test (i, i, 8 << i, BIG_CHAR);

    }

  do_random_tests ();

  return ret;

}

#include <support/test-driver.c>