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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Jiri Svoboda |
2 | * Copyright (c) 2008 Jiri Svoboda |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup rtld |
29 | /** @addtogroup rtld |
30 | * @brief Test dynamic linking capabilities. |
30 | * @brief Test dynamic linking capabilities. |
31 | * @{ |
31 | * @{ |
32 | */ |
32 | */ |
33 | /** |
33 | /** |
34 | * @file |
34 | * @file |
35 | */ |
35 | */ |
36 | 36 | ||
37 | #include <stdio.h> |
37 | #include <stdio.h> |
- | 38 | #include <stdlib.h> |
|
- | 39 | #include <dlfcn.h> |
|
38 | 40 | ||
39 | static void kputint(unsigned i) |
41 | static void kputint(unsigned i) |
40 | { |
42 | { |
41 | // unsigned dummy; |
43 | // unsigned dummy; |
42 | // asm volatile ( |
44 | // asm volatile ( |
43 | // "movl $30, %%eax;" |
45 | // "movl $30, %%eax;" |
44 | // "int $0x30" |
46 | // "int $0x30" |
45 | // : "=d" (dummy) /* output - %edx clobbered */ |
47 | // : "=d" (dummy) /* output - %edx clobbered */ |
46 | // : "d" (i) /* input */ |
48 | // : "d" (i) /* input */ |
47 | // : "%eax","%ecx" /* all scratch registers clobbered */ |
49 | // : "%eax","%ecx" /* all scratch registers clobbered */ |
48 | // ); |
50 | // ); |
49 | /* |
51 | /* |
50 | asm volatile ( |
52 | asm volatile ( |
51 | "mr %%r3, %0\n" |
53 | "mr %%r3, %0\n" |
52 | "li %%r9, 32\n" |
54 | "li %%r9, 32\n" |
53 | "sc\n" |
55 | "sc\n" |
54 | : |
56 | : |
55 | : "r" (i) |
57 | : "r" (i) |
56 | : "%r3","%r9" |
58 | : "%r3","%r9" |
57 | ); |
59 | ); |
58 | */ |
60 | */ |
59 | } |
61 | } |
60 | 62 | ||
61 | int main(int argc, char *argv[]) |
63 | int main(int argc, char *argv[]) |
62 | { |
64 | { |
- | 65 | void *a; |
|
- | 66 | void *s; |
|
- | 67 | ||
- | 68 | char *lib_name; |
|
- | 69 | char *sym_name; |
|
- | 70 | ||
63 | // kputint(-1); |
71 | // kputint(-1); |
64 | printf("Hello from dltest!\n"); |
72 | printf("Hello from dltest!\n"); |
- | 73 | ||
- | 74 | lib_name = "libc.so.0"; |
|
- | 75 | sym_name = "printf"; |
|
- | 76 | ||
- | 77 | a = dlopen(lib_name, 0); |
|
- | 78 | if (a != NULL) { |
|
- | 79 | s = dlsym(a, sym_name); |
|
- | 80 | printf("symbol '%s' = 0x%lx\n", sym_name, (long) s); |
|
- | 81 | } else { |
|
- | 82 | printf("failed to dlopen() library '%s'\n"); |
|
- | 83 | } |
|
65 | return 0; |
84 | return 0; |
66 | } |
85 | } |
67 | 86 | ||
68 | /** @} |
87 | /** @} |
69 | */ |
88 | */ |
70 | 89 | ||
71 | 90 |