1  /* Test strlen with 0 in the RSI register.
       2     Copyright (C) 2021-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #ifdef WIDE
      20  # define TEST_NAME "wcslen"
      21  #else
      22  # define TEST_NAME "strlen"
      23  #endif /* WIDE */
      24  
      25  #define TEST_MAIN
      26  #include <string/test-string.h>
      27  
      28  #ifdef WIDE
      29  # include <wchar.h>
      30  # define STRLEN wcslen
      31  # define CHAR wchar_t
      32  #else
      33  # define STRLEN strlen
      34  # define CHAR char
      35  #endif /* WIDE */
      36  
      37  IMPL (STRLEN, 1)
      38  
      39  typedef size_t (*proto_t) (const CHAR *);
      40  
      41  typedef struct
      42  {
      43    void (*fn) (void);
      44  } parameter_t;
      45  
      46  size_t
      47  __attribute__ ((weak, noinline, noclone))
      48  do_strlen (parameter_t *a, int zero, const CHAR *str)
      49  {
      50    return CALL (a, str);
      51  }
      52  
      53  static int
      54  test_main (void)
      55  {
      56    test_init ();
      57  
      58    size_t size = page_size / sizeof (CHAR) - 1;
      59    CHAR *buf = (CHAR *) buf2;
      60    buf[size] = 0;
      61  
      62    parameter_t a;
      63  
      64    int ret = 0;
      65    FOR_EACH_IMPL (impl, 0)
      66      {
      67        a.fn = impl->fn;
      68        /* NB: Pass 0 in RSI.  */
      69        size_t res = do_strlen (&a, 0, buf);
      70        if (res != size)
      71  	{
      72  	  error (0, 0, "Wrong result in function %s: %zu != %zu",
      73  		 impl->name, res, size);
      74  	  ret = 1;
      75  	}
      76      }
      77  
      78    return ret ? EXIT_FAILURE : EXIT_SUCCESS;
      79  }
      80  
      81  #include <support/test-driver.c>