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58ef9ef7 | 1 | /* Test and measure string and memory functions. |
688903eb | 2 | Copyright (C) 1999-2018 Free Software Foundation, Inc. |
58ef9ef7 RM |
3 | This file is part of the GNU C Library. |
4 | Written by Jakub Jelinek <jakub@redhat.com>, 1999. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
58ef9ef7 | 19 | |
16292edd UD |
20 | #include <sys/cdefs.h> |
21 | ||
58ef9ef7 RM |
22 | typedef struct |
23 | { | |
24 | const char *name; | |
25 | void (*fn) (void); | |
e8c1660f | 26 | long test; |
58ef9ef7 RM |
27 | } impl_t; |
28 | extern impl_t __start_impls[], __stop_impls[]; | |
29 | ||
30 | #define IMPL(name, test) \ | |
e8c1660f RM |
31 | impl_t tst_ ## name \ |
32 | __attribute__ ((section ("impls"), aligned (sizeof (void *)))) \ | |
16292edd | 33 | = { __STRING (name), (void (*) (void))name, test }; |
58ef9ef7 RM |
34 | |
35 | #ifdef TEST_MAIN | |
36 | ||
37 | #ifndef _GNU_SOURCE | |
38 | #define _GNU_SOURCE | |
39 | #endif | |
40 | ||
41 | #undef __USE_STRING_INLINES | |
42 | ||
7c3018f9 ZW |
43 | /* We are compiled under _ISOMAC, so libc-symbols.h does not do this |
44 | for us. */ | |
45 | #include "config.h" | |
46 | #ifdef HAVE_CC_INHIBIT_LOOP_TO_LIBCALL | |
47 | # define inhibit_loop_to_libcall \ | |
48 | __attribute__ ((__optimize__ ("-fno-tree-loop-distribute-patterns"))) | |
49 | #else | |
50 | # define inhibit_loop_to_libcall | |
51 | #endif | |
52 | ||
fb82116f | 53 | #include <getopt.h> |
7c3018f9 | 54 | #include <stdint.h> |
58ef9ef7 RM |
55 | #include <stdio.h> |
56 | #include <stdlib.h> | |
57 | #include <string.h> | |
58 | #include <sys/mman.h> | |
302cadd3 | 59 | #include <sys/param.h> |
58ef9ef7 RM |
60 | #include <unistd.h> |
61 | #include <fcntl.h> | |
62 | #include <error.h> | |
63 | #include <errno.h> | |
64 | #include <time.h> | |
11dd4af6 | 65 | #include <ifunc-impl-list.h> |
58ef9ef7 | 66 | #define GL(x) _##x |
9a850087 | 67 | #define GLRO(x) _##x |
58ef9ef7 RM |
68 | |
69 | ||
fb82116f | 70 | # define TEST_FUNCTION test_main |
58ef9ef7 RM |
71 | # define TIMEOUT (4 * 60) |
72 | # define OPT_ITERATIONS 10000 | |
73 | # define OPT_RANDOM 10001 | |
74 | # define OPT_SEED 10002 | |
75 | ||
76 | unsigned char *buf1, *buf2; | |
77 | int ret, do_srandom; | |
78 | unsigned int seed; | |
79 | size_t page_size; | |
80 | ||
58ef9ef7 RM |
81 | # ifndef ITERATIONS |
82 | size_t iterations = 100000; | |
83 | # define ITERATIONS_OPTIONS \ | |
84 | { "iterations", required_argument, NULL, OPT_ITERATIONS }, | |
85 | # define ITERATIONS_PROCESS \ | |
86 | case OPT_ITERATIONS: \ | |
87 | iterations = strtoul (optarg, NULL, 0); \ | |
88 | break; | |
89 | # define ITERATIONS iterations | |
90 | # else | |
91 | # define ITERATIONS_OPTIONS | |
92 | # define ITERATIONS_PROCESS | |
93 | # endif | |
94 | ||
95 | # define CMDLINE_OPTIONS ITERATIONS_OPTIONS \ | |
96 | { "random", no_argument, NULL, OPT_RANDOM }, \ | |
97 | { "seed", required_argument, NULL, OPT_SEED }, | |
fb82116f WSM |
98 | |
99 | static void __attribute__ ((used)) | |
100 | cmdline_process_function (int c) | |
101 | { | |
102 | switch (c) | |
103 | { | |
104 | ITERATIONS_PROCESS | |
105 | case OPT_RANDOM: | |
106 | { | |
107 | int fdr = open ("/dev/urandom", O_RDONLY); | |
108 | if (fdr < 0 || read (fdr, &seed, sizeof (seed)) != sizeof (seed)) | |
109 | seed = time (NULL); | |
110 | if (fdr >= 0) | |
111 | close (fdr); | |
112 | do_srandom = 1; | |
113 | break; | |
114 | } | |
115 | ||
116 | case OPT_SEED: | |
117 | seed = strtoul (optarg, NULL, 0); | |
118 | do_srandom = 1; | |
119 | break; | |
120 | } | |
121 | } | |
122 | # define CMDLINE_PROCESS cmdline_process_function | |
58ef9ef7 RM |
123 | |
124 | #define CALL(impl, ...) \ | |
125 | (* (proto_t) (impl)->fn) (__VA_ARGS__) | |
126 | ||
bd5dadac | 127 | #ifdef TEST_NAME |
11dd4af6 L |
128 | /* Increase size of FUNC_LIST if assert is triggered at run-time. */ |
129 | static struct libc_ifunc_impl func_list[32]; | |
130 | static int func_count; | |
131 | static int impl_count = -1; | |
132 | static impl_t *impl_array; | |
133 | ||
134 | # define FOR_EACH_IMPL(impl, notall) \ | |
135 | impl_t *impl; \ | |
136 | int count; \ | |
137 | if (impl_count == -1) \ | |
138 | { \ | |
139 | impl_count = 0; \ | |
140 | if (func_count != 0) \ | |
141 | { \ | |
142 | int f; \ | |
143 | impl_t *skip = NULL, *a; \ | |
144 | for (impl = __start_impls; impl < __stop_impls; ++impl) \ | |
145 | if (strcmp (impl->name, TEST_NAME) == 0) \ | |
146 | skip = impl; \ | |
147 | else \ | |
148 | impl_count++; \ | |
149 | a = impl_array = malloc ((impl_count + func_count) * \ | |
150 | sizeof (impl_t)); \ | |
151 | for (impl = __start_impls; impl < __stop_impls; ++impl) \ | |
152 | if (impl != skip) \ | |
153 | *a++ = *impl; \ | |
154 | for (f = 0; f < func_count; f++) \ | |
155 | if (func_list[f].usable) \ | |
156 | { \ | |
157 | a->name = func_list[f].name; \ | |
158 | a->fn = func_list[f].fn; \ | |
159 | a->test = 1; \ | |
160 | a++; \ | |
161 | } \ | |
162 | impl_count = a - impl_array; \ | |
163 | } \ | |
164 | else \ | |
165 | { \ | |
166 | impl_count = __stop_impls - __start_impls; \ | |
167 | impl_array = __start_impls; \ | |
168 | } \ | |
169 | } \ | |
170 | impl = impl_array; \ | |
171 | for (count = 0; count < impl_count; ++count, ++impl) \ | |
172 | if (!notall || impl->test) | |
173 | #else | |
174 | # define FOR_EACH_IMPL(impl, notall) \ | |
58ef9ef7 RM |
175 | for (impl_t *impl = __start_impls; impl < __stop_impls; ++impl) \ |
176 | if (!notall || impl->test) | |
11dd4af6 | 177 | #endif |
58ef9ef7 | 178 | |
f63abf58 UD |
179 | #ifndef BUF1PAGES |
180 | # define BUF1PAGES 1 | |
181 | #endif | |
182 | ||
58ef9ef7 RM |
183 | static void |
184 | test_init (void) | |
185 | { | |
bd5dadac | 186 | #ifdef TEST_NAME |
11dd4af6 L |
187 | func_count = __libc_ifunc_impl_list (TEST_NAME, func_list, |
188 | (sizeof func_list | |
189 | / sizeof func_list[0])); | |
190 | #endif | |
191 | ||
58ef9ef7 RM |
192 | page_size = 2 * getpagesize (); |
193 | #ifdef MIN_PAGE_SIZE | |
194 | if (page_size < MIN_PAGE_SIZE) | |
195 | page_size = MIN_PAGE_SIZE; | |
196 | #endif | |
f63abf58 | 197 | buf1 = mmap (0, (BUF1PAGES + 1) * page_size, PROT_READ | PROT_WRITE, |
58ef9ef7 RM |
198 | MAP_PRIVATE | MAP_ANON, -1, 0); |
199 | if (buf1 == MAP_FAILED) | |
200 | error (EXIT_FAILURE, errno, "mmap failed"); | |
f63abf58 | 201 | if (mprotect (buf1 + BUF1PAGES * page_size, page_size, PROT_NONE)) |
58ef9ef7 RM |
202 | error (EXIT_FAILURE, errno, "mprotect failed"); |
203 | buf2 = mmap (0, 2 * page_size, PROT_READ | PROT_WRITE, | |
204 | MAP_PRIVATE | MAP_ANON, -1, 0); | |
205 | if (buf2 == MAP_FAILED) | |
206 | error (EXIT_FAILURE, errno, "mmap failed"); | |
207 | if (mprotect (buf2 + page_size, page_size, PROT_NONE)) | |
208 | error (EXIT_FAILURE, errno, "mprotect failed"); | |
58ef9ef7 RM |
209 | if (do_srandom) |
210 | { | |
211 | printf ("Setting seed to 0x%x\n", seed); | |
212 | srandom (seed); | |
213 | } | |
9372c958 | 214 | |
f63abf58 | 215 | memset (buf1, 0xa5, BUF1PAGES * page_size); |
9372c958 | 216 | memset (buf2, 0x5a, page_size); |
58ef9ef7 RM |
217 | } |
218 | ||
219 | #endif |