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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 | 40 | ||
41 | #include <rtld.h> |
41 | #include <rtld.h> |
42 | #include <dynamic.h> |
42 | #include <dynamic.h> |
43 | #include <pcb.h> |
43 | #include <pcb.h> |
44 | #include <elf_load.h> |
44 | #include <elf_load.h> |
45 | #include <arch.h> |
45 | #include <arch.h> |
46 | 46 | ||
47 | void _rtld_main(void) |
47 | void _rtld_main(void) |
48 | { |
48 | { |
49 | pcb_t *pcb; |
49 | pcb_t *pcb; |
50 | elf_info_t lib_info; |
50 | elf_info_t lib_info; |
51 | static module_t prog; |
51 | static module_t prog; |
- | 52 | static module_t lib; |
|
52 | int rc; |
53 | int rc; |
53 | 54 | ||
54 | printf("Hello, world! (from rtld)\n"); |
55 | printf("Hello, world! (from rtld)\n"); |
55 | getchar(); |
56 | getchar(); |
56 | 57 | ||
57 | printf("Parse .dynamic section\n"); |
58 | printf("Parse .dynamic section\n"); |
58 | pcb = (pcb_t *)PCB_ADDRESS; |
59 | pcb = (pcb_t *)PCB_ADDRESS; |
59 | dynamic_parse(pcb->dynamic, 0, &prog.dyn); |
60 | dynamic_parse(pcb->dynamic, 0, &prog.dyn); |
- | 61 | prog.bias = 0; |
|
60 | 62 | ||
61 | printf("Program requested library '%s'\n", prog.dyn.needed); |
63 | printf("Program requested library '%s'\n", prog.dyn.needed); |
62 | 64 | ||
63 | rc = elf_load_file("/libtest.so.0", 0x20000, &lib_info); |
65 | rc = elf_load_file("/libtest.so.0", 0x20000, &lib_info); |
64 | if (rc < 0) { |
66 | if (rc < 0) { |
65 | printf("failed to load library\n"); |
67 | printf("failed to load library\n"); |
66 | return; |
68 | return; |
67 | } |
69 | } |
68 | 70 | ||
- | 71 | dynamic_parse(lib_info.dynamic, 0x20000, &lib.dyn); |
|
- | 72 | lib.bias = 0x20000; |
|
- | 73 | ||
69 | /* Parse program's relocation tables */ |
74 | /* Parse program's relocation tables */ |
70 | rel_table_process(&prog, prog.dyn.rel, prog.dyn.rel_sz); |
75 | rel_table_process(&prog, prog.dyn.rel, prog.dyn.rel_sz, &lib); |
71 | rel_table_process(&prog, prog.dyn.jmp_rel, prog.dyn.plt_rel_sz); |
76 | rel_table_process(&prog, prog.dyn.jmp_rel, prog.dyn.plt_rel_sz, &lib); |
72 | 77 | ||
73 | printf("Run program..\n"); |
78 | printf("Run program..\n"); |
74 | pcb->entry(); |
79 | pcb->entry(); |
75 | } |
80 | } |
76 | 81 | ||
77 | /** @} |
82 | /** @} |
78 | */ |
83 | */ |
79 | 84 |