1 /* Test memcmp with size_t in the lower 32 bits of 64-bit register.
2 Copyright (C) 2019-2021 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 #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))
do_memcmp(parameter_t a,parameter_t b)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
test_main(void)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 CHAR *p = (CHAR *) buf1;
61 p[page_size / sizeof (CHAR) - 1] = (CHAR) 1;
62
63 int ret = 0;
64 FOR_EACH_IMPL (impl, 0)
65 {
66 src.fn = impl->fn;
67 int res = do_memcmp (dest, src);
68 if (res >= 0)
69 {
70 error (0, 0, "Wrong result in function %s: %i >= 0",
71 impl->name, res);
72 ret = 1;
73 }
74 }
75
76 return ret ? EXIT_FAILURE : EXIT_SUCCESS;
77 }
78
79 #include <support/test-driver.c>
80