1 /* Test dl-hash functions.
2 Copyright (C) 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
20 #include <simple-dl-hash.h>
21 #include <simple-dl-new-hash.h>
22 #include <dl-hash.h>
23 #include <dl-new-hash.h>
24 #include <support/support.h>
25 #include <support/check.h>
26 #include <stdio.h>
27 #include <string.h>
28 #include <stdlib.h>
29
30 typedef unsigned int (*hash_f) (const char *);
31
32
33
34 static int
do_fill_test(size_t len,int fill,const char * name,hash_f testf,hash_f expecf)35 do_fill_test (size_t len, int fill, const char *name, hash_f testf,
36 hash_f expecf)
37 {
38 uint32_t expec, res;
39 char buf[len + 1];
40 memset (buf, fill, len);
41 buf[len] = '\0';
42
43 expec = expecf (buf);
44 res = testf (buf);
45 if (expec != res)
46 FAIL_EXIT1 ("FAIL: fill(%d) %s(%zu), %x != %x\n", fill, name, len, expec,
47 res);
48
49 return 0;
50 }
51
52 static int
do_fill_tests(size_t len,int fill)53 do_fill_tests (size_t len, int fill)
54 {
55 if (do_fill_test (len, fill, "dl_new_hash", &_dl_new_hash,
56 &__simple_dl_new_hash))
57 return 1;
58
59 return do_fill_test (len, fill, "dl_elf_hash", &_dl_elf_hash,
60 &__simple_dl_elf_hash);
61 }
62
63 static int
do_rand_test(size_t len,const char * name,hash_f testf,hash_f expecf)64 do_rand_test (size_t len, const char *name, hash_f testf, hash_f expecf)
65 {
66 uint32_t expec, res;
67 size_t i;
68 char buf[len + 1];
69 char v;
70 for (i = 0; i < len; ++i)
71 {
72 v = random ();
73 if (v == 0)
74 v = 1;
75
76 buf[i] = v;
77 }
78 buf[len] = '\0';
79
80 expec = expecf (buf);
81 res = testf (buf);
82 if (expec != res)
83 FAIL_EXIT1 ("FAIL: random %s(%zu), %x != %x\n", name, len, expec, res);
84
85 return 0;
86 }
87
88 static int
do_rand_tests(size_t len)89 do_rand_tests (size_t len)
90 {
91 if (do_rand_test (len, "dl_new_hash", &_dl_new_hash, &__simple_dl_new_hash))
92 return 1;
93
94 return do_rand_test (len, "dl_elf_hash", &_dl_elf_hash, &__simple_dl_elf_hash);
95 }
96
97 static int
do_test(void)98 do_test (void)
99 {
100 size_t i, j;
101 for (i = 0; i < 100; ++i)
102 {
103 for (j = 0; j < 8192; ++j)
104 {
105 if (do_rand_tests (i))
106 return 1;
107
108 if (do_fill_tests (i, -1) || do_fill_tests (i, 1)
109 || do_fill_tests (i, 0x80) || do_fill_tests (i, 0x88))
110 return 1;
111 }
112 }
113 return 0;
114 }
115
116 #include <support/test-driver.c>
117