sysdeps/x86_64/x32/tst-size_t-memcmp.c

   1 /* Test memcmp with size_t in the lower 32 bits of 64-bit register.
   2    Copyright (C) 2019 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #define TEST_MAIN
  20 #ifdef WIDE
  21 # define TEST_NAME "wmemcmp"
  22 #else
  23 # define TEST_NAME "memcmp"
  24 #endif
  25
  26 #include "test-size_t.h"
  27
  28 #ifdef WIDE
  29 # include <inttypes.h>
  30 # include <wchar.h>
  31
  32 # define MEMCMP wmemcmp
  33 # define CHAR wchar_t
  34 #else
  35 # define MEMCMP memcmp
  36 # define CHAR char
  37 #endif
  38
  39 IMPL (MEMCMP, 1)
  40
  41 typedef int (*proto_t) (const CHAR *, const CHAR *, size_t);
  42
  43 static int
  44 __attribute__ ((noinline, noclone))
  45 do_memcmp (parameter_t a, parameter_t b)
  46 {
  47   return CALL (&b, a.p, b.p, a.len);
  48 }
  49
  50 static int
  51 test_main (void)
  52 {
  53   test_init ();
  54
  55   parameter_t dest = { { page_size / sizeof (CHAR) }, buf1 };
  56   parameter_t src = { { 0 }, buf2 };
  57
  58   memcpy (buf1, buf2, page_size);
  59
  60   int ret = 0;
  61   FOR_EACH_IMPL (impl, 0)
  62     {
  63       src.fn = impl->fn;
  64       int res = do_memcmp (dest, src);
  65       if (res)
  66         {
  67           error (0, 0, "Wrong result in function %s: %i != 0",
  68                  impl->name, res);
  69           ret = 1;
  70         }
  71     }
  72
  73   return ret ? EXIT_FAILURE : EXIT_SUCCESS;
  74 }
  75
  76 #include <support/test-driver.c>