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Rev 2990 | Rev 2996 | ||
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Line 44... | Line 44... | ||
44 | #include <elf_load.h> |
44 | #include <elf_load.h> |
45 | #include <arch.h> |
45 | #include <arch.h> |
46 | 46 | ||
47 | runtime_env_t runtime_env; |
47 | runtime_env_t runtime_env; |
48 | 48 | ||
- | 49 | void module_process_relocs(module_t *m) |
|
- | 50 | { |
|
- | 51 | if (m->dyn.plt_rel == DT_REL) { |
|
- | 52 | if (m->dyn.rel != NULL) |
|
- | 53 | rel_table_process(m, m->dyn.rel, m->dyn.rel_sz); |
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- | 54 | /* FIXME: this seems wrong */ |
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- | 55 | if (m->dyn.jmp_rel != NULL) |
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- | 56 | rel_table_process(m, m->dyn.jmp_rel, m->dyn.plt_rel_sz); |
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- | 57 | } else { /* (m->dyn.plt_rel == DT_RELA) */ |
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- | 58 | printf("table type DT_RELA\n"); |
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- | 59 | if (m->dyn.rela != NULL) { |
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- | 60 | printf("non-empty\n"); |
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- | 61 | rela_table_process(m, m->dyn.rela, m->dyn.rela_sz); |
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- | 62 | } |
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- | 63 | } |
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- | 64 | } |
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- | 65 | ||
49 | void _rtld_main(void) |
66 | void _rtld_main(void) |
50 | { |
67 | { |
51 | pcb_t *pcb; |
68 | pcb_t *pcb; |
52 | elf_info_t lib_info; |
69 | elf_info_t lib_info; |
53 | static module_t prog; |
70 | static module_t prog; |
54 | static module_t lib; |
71 | static module_t lib; |
55 | module_t *rtld; |
72 | module_t *rtld; |
56 | int rc; |
73 | int rc; |
57 | 74 | ||
58 | printf("Hello, world! (from rtld)\n"); |
75 | printf("Hello, world! (from rtld)\n"); |
59 | getchar(); |
76 | // getchar(); |
60 | 77 | ||
61 | /* rtld_dynamic and rtld->bias were filled out by the bootstrap code */ |
78 | /* rtld_dynamic and rtld->bias were filled out by the bootstrap code */ |
62 | rtld = &runtime_env.rtld; |
79 | rtld = &runtime_env.rtld; |
- | 80 | printf("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic); |
|
63 | dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn); |
81 | dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn); |
- | 82 | // getchar(); |
|
64 | 83 | ||
65 | printf("Parse .dynamic section\n"); |
- | |
66 | pcb = __pcb_get(); |
84 | pcb = __pcb_get(); |
- | 85 | printf("Parse program .dynamic section at 0x%x\n", pcb->dynamic); |
|
67 | dynamic_parse(pcb->dynamic, 0, &prog.dyn); |
86 | dynamic_parse(pcb->dynamic, 0, &prog.dyn); |
68 | prog.bias = 0; |
87 | prog.bias = 0; |
69 | prog.dyn.soname = "[program]"; |
88 | prog.dyn.soname = "[program]"; |
70 | 89 | ||
71 | printf("Program requested library '%s'\n", prog.dyn.needed); |
90 | printf("Program requested library '%s'\n", prog.dyn.needed); |
- | 91 | // getchar(); |
|
72 | 92 | ||
73 | rc = elf_load_file("/libc.so.0", 0x20000, &lib_info); |
93 | rc = elf_load_file("/libc.so.0", 0x20000, &lib_info); |
74 | if (rc < 0) { |
94 | if (rc < 0) { |
75 | printf("failed to load library\n"); |
95 | printf("failed to load library\n"); |
76 | return; |
96 | return; |
Line 83... | Line 103... | ||
83 | runtime_env.program = &prog; |
103 | runtime_env.program = &prog; |
84 | runtime_env.libc = &lib; |
104 | runtime_env.libc = &lib; |
85 | 105 | ||
86 | /* Parse program's relocation tables */ |
106 | /* Parse program's relocation tables */ |
87 | printf("Resolve references in program\n"); |
107 | printf("Resolve references in program\n"); |
88 | if (prog.dyn.rel != NULL) |
108 | module_process_relocs(&prog); |
89 | rel_table_process(&prog, prog.dyn.rel, prog.dyn.rel_sz); |
- | |
90 | if (prog.dyn.jmp_rel != NULL) |
- | |
91 | rel_table_process(&prog, prog.dyn.jmp_rel, prog.dyn.plt_rel_sz); |
- | |
92 | 109 | ||
93 | /* Parse lib's relocation tables */ |
110 | /* Parse lib's relocation tables */ |
94 | printf("Resolve references in library\n"); |
111 | printf("Resolve references in library\n"); |
95 | if (lib.dyn.rel != NULL) |
- | |
96 | rel_table_process(&lib, lib.dyn.rel, lib.dyn.rel_sz); |
- | |
97 | if (lib.dyn.jmp_rel != NULL) |
112 | module_process_relocs(&lib); |
98 | rel_table_process(&lib, lib.dyn.jmp_rel, lib.dyn.plt_rel_sz); |
- | |
99 | 113 | ||
100 | printf("lib.bias=0x%x\n", lib.bias); |
114 | printf("lib.bias=0x%x\n", lib.bias); |
101 | 115 | ||
102 | printf("Run program..\n"); |
116 | printf("Run program.. (at 0x%x)\n", (uintptr_t)pcb->entry); |
- | 117 | getchar(); |
|
103 | pcb->entry(); |
118 | pcb->entry(); |
104 | } |
119 | } |
105 | 120 | ||
106 | /** @} |
121 | /** @} |
107 | */ |
122 | */ |