1 /* Test strlen with 0 in the RSI register.
2 Copyright (C) 2021-2022 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))
do_strlen(parameter_t * a,int zero,const CHAR * str)48 do_strlen (parameter_t *a, int zero, const CHAR *str)
49 {
50 return CALL (a, str);
51 }
52
53 static int
test_main(void)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>
82