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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 <unistd.h> |
38 | #include <unistd.h> |
39 | #include <fcntl.h> |
39 | #include <fcntl.h> |
40 | #include <loader/pcb.h> |
40 | #include <loader/pcb.h> |
41 | 41 | ||
42 | #include <rtld.h> |
42 | #include <rtld.h> |
43 | #include <dynamic.h> |
43 | #include <dynamic.h> |
44 | #include <elf_load.h> |
44 | #include <elf_load.h> |
45 | #include <module.h> |
45 | #include <module.h> |
46 | #include <rtld_arch.h> |
46 | #include <rtld_arch.h> |
47 | 47 | ||
48 | runtime_env_t runtime_env; |
48 | runtime_env_t runtime_env; |
49 | 49 | ||
50 | void program_run(void *entry, pcb_t *pcb); |
50 | void program_run(void *entry, pcb_t *pcb); |
51 | 51 | ||
52 | void _rtld_main(void) |
52 | static void rtld_main(void) |
53 | { |
53 | { |
54 | static module_t prog; |
54 | static module_t prog; |
55 | // module_t *rtld; |
55 | // module_t *rtld; |
56 | 56 | ||
57 | DPRINTF("Hello, world! (from rtld)\n"); |
57 | DPRINTF("Hello, world! (from rtld)\n"); |
58 | 58 | ||
59 | /* |
59 | /* |
60 | * First we need to process dynamic sections of the two modules |
60 | * First we need to process dynamic sections of the two modules |
61 | * that have been already loaded, that is, of ourselves and of |
61 | * that have been already loaded, that is, of ourselves and of |
62 | * the executable program. |
62 | * the executable program. |
63 | */ |
63 | */ |
64 | 64 | ||
65 | /* rtld_dynamic and rtld->bias were filled out by the bootstrap code */ |
65 | /* rtld_dynamic and rtld->bias were filled out by the bootstrap code */ |
66 | // rtld = &runtime_env.rtld; |
66 | // rtld = &runtime_env.rtld; |
67 | // DPRINTF("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic); |
67 | // DPRINTF("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic); |
68 | // dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn); |
68 | // dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn); |
69 | 69 | ||
70 | DPRINTF("Parse program .dynamic section at 0x%x\n", __pcb->dynamic); |
70 | DPRINTF("Parse program .dynamic section at 0x%x\n", __pcb->dynamic); |
71 | dynamic_parse(__pcb->dynamic, 0, &prog.dyn); |
71 | dynamic_parse(__pcb->dynamic, 0, &prog.dyn); |
72 | prog.bias = 0; |
72 | prog.bias = 0; |
73 | prog.dyn.soname = "[program]"; |
73 | prog.dyn.soname = "[program]"; |
74 | 74 | ||
75 | /* Initialize list of loaded modules */ |
75 | /* Initialize list of loaded modules */ |
76 | list_initialize(&runtime_env.modules_head); |
76 | list_initialize(&runtime_env.modules_head); |
77 | list_append(&prog.modules_link, &runtime_env.modules_head); |
77 | list_append(&prog.modules_link, &runtime_env.modules_head); |
78 | // list_append(&rtld->modules_link, &runtime_env.modules_head); |
- | |
79 | 78 | ||
80 | /* Pointer to program module. Used as root of the dependency graph */ |
79 | /* Pointer to program module. Used as root of the dependency graph */ |
81 | runtime_env.program = &prog; |
80 | runtime_env.program = &prog; |
82 | 81 | ||
83 | /* |
82 | /* |
84 | * Now we can continue with loading all other modules. |
83 | * Now we can continue with loading all other modules. |
85 | */ |
84 | */ |
86 | 85 | ||
87 | DPRINTF("Load all program dependencies\n"); |
86 | DPRINTF("Load all program dependencies\n"); |
88 | module_load_deps(&prog); |
87 | module_load_deps(&prog); |
89 | 88 | ||
90 | /* |
89 | /* |
91 | * Now relocate/link all modules together. |
90 | * Now relocate/link all modules together. |
92 | */ |
91 | */ |
93 | 92 | ||
94 | /* Process relocations in all modules */ |
93 | /* Process relocations in all modules */ |
95 | DPRINTF("Relocate all modules\n"); |
94 | DPRINTF("Relocate all modules\n"); |
96 | modules_process_relocs(); |
95 | modules_process_relocs(); |
97 | 96 | ||
98 | /* |
97 | /* |
99 | * Finally, run the main program. |
98 | * Finally, run the main program. |
100 | */ |
99 | */ |
101 | DPRINTF("Run program.. (at 0x%x)\n", (uintptr_t)__pcb->entry); |
100 | DPRINTF("Run program.. (at 0x%lx)\n", (uintptr_t)__pcb->entry); |
102 | 101 | ||
103 | #ifndef RTLD_DEBUG |
102 | #ifndef RTLD_DEBUG |
104 | close_console(); |
103 | close_console(); |
105 | #endif |
104 | #endif |
106 | //__pcb->entry(); |
- | |
107 | program_run(__pcb->entry, __pcb); |
105 | program_run(__pcb->entry, __pcb); |
108 | } |
106 | } |
109 | 107 | ||
110 | /** Fake main to satisfy dependency from libc */ |
108 | /** Fake main to satisfy dependency from libc */ |
111 | int main(int argc, char *argv[]) |
109 | int main(int argc, char *argv[]) |
112 | { |
110 | { |
- | 111 | rtld_main(); |
|
113 | return 0; |
112 | return 0; |
114 | } |
113 | } |
115 | /* |
- | |
116 | typedef void (*ep2)(void *); |
- | |
117 | - | ||
118 | void program_run(void *entry, pcb_t *pcb) |
- | |
119 | { |
- | |
120 | asm ( |
- | |
121 | // "xorl %%ebx, %%ebx\n" |
- | |
122 | // "movl 0(%%ebx), %%ecx\n" |
- | |
123 | "mov %%eax, %%ebx\n" |
- | |
124 | "jmp *%0\n" |
- | |
125 | :: "m" (entry), "a" (pcb) |
- | |
126 | ); |
- | |
127 | }*/ |
- | |
128 | 114 | ||
129 | /** @} |
115 | /** @} |
130 | */ |
116 | */ |
131 | 117 |