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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 loader |
29 | /** @addtogroup loader |
30 | * @brief Loads and runs programs from VFS. |
30 | * @brief Loads and runs programs from VFS. |
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 <sys/types.h> |
40 | #include <sys/types.h> |
41 | #include <as.h> |
41 | #include <as.h> |
42 | 42 | ||
43 | #include <elf.h> |
43 | #include <elf.h> |
44 | #include <elf_load.h> |
44 | #include <elf_load.h> |
- | 45 | #include <pcb.h> |
|
45 | 46 | ||
46 | #define RTLD_BIAS 0x80000 |
47 | #define RTLD_BIAS 0x80000 |
47 | 48 | ||
48 | int main(int argc, char *argv[]) |
49 | int main(int argc, char *argv[]) |
49 | { |
50 | { |
50 | elf_info_t prog_info; |
51 | elf_info_t prog_info; |
51 | elf_info_t interp_info; |
52 | elf_info_t interp_info; |
52 | char *file_name; |
53 | char *file_name; |
- | 54 | pcb_t *pcb; |
|
53 | int rc; |
55 | int rc; |
54 | 56 | ||
55 | printf("This is loader\n"); |
57 | printf("This is loader\n"); |
56 | getchar(); |
58 | getchar(); |
57 | 59 | ||
58 | printf("Load program\n"); |
60 | printf("Load program\n"); |
59 | 61 | ||
60 | // rc = elf_load_file("/dltest", 0, &prog_info); |
62 | rc = elf_load_file("/dltest", 0, &prog_info); |
61 | rc = elf_load_file("/tetris", 0, &prog_info); |
63 | // rc = elf_load_file("/tetris", 0, &prog_info); |
62 | if (rc < 0) { |
64 | if (rc < 0) { |
63 | printf("failed to load program\n"); |
65 | printf("failed to load program\n"); |
64 | return 1; |
66 | return 1; |
65 | } |
67 | } |
66 | 68 | ||
67 | printf("Create PCB\n"); |
69 | printf("Create PCB\n"); |
68 | if (elf_create_pcb(&prog_info) < 0) return 1; |
70 | if (elf_create_pcb(&prog_info) < 0) return 1; |
69 | 71 | ||
70 | // elf_run(&prog_info); |
72 | // elf_run(&prog_info); |
71 | 73 | ||
72 | // getchar(); |
74 | // getchar(); |
73 | 75 | ||
74 | /* printf("Load dynamic linker\n"); |
76 | printf("Load dynamic linker\n"); |
75 | file_name = "/rtld.so"; |
77 | file_name = "/rtld.so"; |
76 | printf("open and read '%s'...\n", file_name); |
78 | printf("open and read '%s'...\n", file_name); |
77 | rc = elf_load_file(file_name, RTLD_BIAS, &interp_info); |
79 | rc = elf_load_file(file_name, RTLD_BIAS, &interp_info); |
78 | if (rc < 0) { |
80 | if (rc < 0) { |
79 | printf("failed to load dynamic linker\n"); |
81 | printf("failed to load dynamic linker\n"); |
80 | return 1; |
82 | return 1; |
81 | } |
83 | } |
82 | 84 | ||
- | 85 | /* |
|
- | 86 | * Provide rtld with some useful data |
|
- | 87 | */ |
|
- | 88 | pcb = (pcb_t *)PCB_ADDRESS; |
|
- | 89 | pcb->rtld_dynamic = interp_info.dynamic; |
|
- | 90 | pcb->rtld_bias = RTLD_BIAS; |
|
- | 91 | ||
83 | printf("run dynamic linker\n"); |
92 | printf("run dynamic linker\n"); |
84 | elf_run(&interp_info); |
93 | elf_run(&interp_info); |
85 | */ |
94 | |
86 | /* not reached */ |
95 | /* not reached */ |
87 | return 0; |
96 | return 0; |
88 | } |
97 | } |
89 | 98 | ||
90 | /** @} |
99 | /** @} |
91 | */ |
100 | */ |
92 | 101 |