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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 rtld |
29 | /** @addtogroup rtld rtld |
30 | * @brief |
30 | * @brief |
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> |
38 | #include <stdlib.h> |
39 | #include <dlfcn.h> |
39 | #include <dlfcn.h> |
40 | 40 | ||
41 | /* From librtld. */ |
41 | /* From librtld. */ |
42 | #include <module.h> |
42 | #include <module.h> |
43 | #include <symbol.h> |
43 | #include <symbol.h> |
44 | 44 | ||
45 | void *dlopen(const char *path, int flag) |
45 | void *dlopen(const char *path, int flag) |
46 | { |
46 | { |
47 | module_t *m; |
47 | module_t *m; |
48 | 48 | ||
49 | printf("dlopen(\"%s\", %d)\n", path, flag); |
49 | printf("dlopen(\"%s\", %d)\n", path, flag); |
50 | 50 | ||
51 | printf("module_find('%s')\n", path); |
51 | printf("module_find('%s')\n", path); |
52 | m = module_find(path); |
52 | m = module_find(path); |
53 | if (m == NULL) { |
53 | if (m == NULL) { |
54 | printf("NULL. module_load('%s')\n", path); |
54 | printf("NULL. module_load('%s')\n", path); |
55 | m = module_load(path); |
55 | m = module_load(path); |
56 | printf("module_load_deps(m)\n"); |
56 | printf("module_load_deps(m)\n"); |
57 | module_load_deps(m); |
57 | module_load_deps(m); |
- | 58 | /* Now relocate. */ |
|
- | 59 | printf("module_process_relocs(m)\n"); |
|
- | 60 | module_process_relocs(m); |
|
58 | } else { |
61 | } else { |
59 | printf("not NULL\n"); |
62 | printf("not NULL\n"); |
60 | } |
63 | } |
61 | 64 | ||
62 | return (void *) m; |
65 | return (void *) m; |
63 | } |
66 | } |
64 | 67 | ||
65 | /* |
68 | /* |
66 | * @note Symbols with NULL values are not accounted for. |
69 | * @note Symbols with NULL values are not accounted for. |
67 | * @note Symbol search scope is not correct. Should only |
- | |
68 | * look in @a mod and its dependencies. |
- | |
69 | */ |
70 | */ |
70 | void *dlsym(void *mod, const char *sym_name) |
71 | void *dlsym(void *mod, const char *sym_name) |
71 | { |
72 | { |
72 | elf_symbol_t *sd; |
73 | elf_symbol_t *sd; |
73 | module_t *sm; |
74 | module_t *sm; |
74 | 75 | ||
75 | printf("dlsym(0x%lx, \"%s\")\n", (long)mod, sym_name); |
76 | printf("dlsym(0x%lx, \"%s\")\n", (long)mod, sym_name); |
76 | sd = symbol_def_find(sym_name, (module_t *) mod, &sm); |
77 | sd = symbol_bfs_find(sym_name, (module_t *) mod, &sm); |
77 | if (sd != NULL) { |
78 | if (sd != NULL) { |
78 | return symbol_get_addr(sd, sm); |
79 | return symbol_get_addr(sd, sm); |
79 | } |
80 | } |
80 | 81 | ||
81 | return NULL; |
82 | return NULL; |
82 | } |
83 | } |
83 | 84 | ||
84 | /** @} |
85 | /** @} |
85 | */ |
86 | */ |
86 | 87 |