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| Rev | Author | Line No. | Line |
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| 2933 | svoboda | 1 | /* |
| 2 | * Copyright (c) 2008 Jiri Svoboda |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup rtld rtld |
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| 30 | * @brief |
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| 31 | * @{ |
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| 32 | */ |
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| 33 | /** |
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| 34 | * @file |
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| 35 | */ |
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| 36 | |||
| 2952 | svoboda | 37 | #include <stdio.h> |
| 2954 | svoboda | 38 | #include <unistd.h> |
| 39 | #include <fcntl.h> |
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| 3400 | svoboda | 40 | #include <loader/pcb.h> |
| 2952 | svoboda | 41 | |
| 2965 | svoboda | 42 | #include <rtld.h> |
| 2968 | svoboda | 43 | #include <dynamic.h> |
| 2969 | svoboda | 44 | #include <elf_load.h> |
| 2999 | svoboda | 45 | #include <module.h> |
| 3400 | svoboda | 46 | #include <rtld_arch.h> |
| 2959 | svoboda | 47 | |
| 2980 | svoboda | 48 | runtime_env_t runtime_env; |
| 49 | |||
| 3400 | svoboda | 50 | void program_run(void *entry, pcb_t *pcb); |
| 51 | |||
| 3673 | svoboda | 52 | static void rtld_main(void) |
| 2933 | svoboda | 53 | { |
| 2973 | svoboda | 54 | static module_t prog; |
| 2933 | svoboda | 55 | |
| 3562 | svoboda | 56 | DPRINTF("Hello, world! (from rtld)\n"); |
| 2933 | svoboda | 57 | |
| 2999 | svoboda | 58 | /* |
| 3677 | svoboda | 59 | * First we need to process dynamic sections of the executable |
| 60 | * program and insert it into the module graph. |
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| 2999 | svoboda | 61 | */ |
| 62 | |||
| 3562 | svoboda | 63 | DPRINTF("Parse program .dynamic section at 0x%x\n", __pcb->dynamic); |
| 3400 | svoboda | 64 | dynamic_parse(__pcb->dynamic, 0, &prog.dyn); |
| 2978 | svoboda | 65 | prog.bias = 0; |
| 2980 | svoboda | 66 | prog.dyn.soname = "[program]"; |
| 2969 | svoboda | 67 | |
| 2999 | svoboda | 68 | /* Initialize list of loaded modules */ |
| 69 | list_initialize(&runtime_env.modules_head); |
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| 70 | list_append(&prog.modules_link, &runtime_env.modules_head); |
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| 2969 | svoboda | 71 | |
| 3677 | svoboda | 72 | /* Pointer to program module. Used as root of the module graph. */ |
| 2980 | svoboda | 73 | runtime_env.program = &prog; |
| 74 | |||
| 2999 | svoboda | 75 | /* |
| 76 | * Now we can continue with loading all other modules. |
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| 77 | */ |
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| 2973 | svoboda | 78 | |
| 3562 | svoboda | 79 | DPRINTF("Load all program dependencies\n"); |
| 2999 | svoboda | 80 | module_load_deps(&prog); |
| 2981 | svoboda | 81 | |
| 2999 | svoboda | 82 | /* |
| 83 | * Now relocate/link all modules together. |
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| 84 | */ |
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| 2980 | svoboda | 85 | |
| 2999 | svoboda | 86 | /* Process relocations in all modules */ |
| 3562 | svoboda | 87 | DPRINTF("Relocate all modules\n"); |
| 2999 | svoboda | 88 | modules_process_relocs(); |
| 89 | |||
| 90 | /* |
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| 91 | * Finally, run the main program. |
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| 92 | */ |
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| 3673 | svoboda | 93 | DPRINTF("Run program.. (at 0x%lx)\n", (uintptr_t)__pcb->entry); |
| 3562 | svoboda | 94 | |
| 95 | #ifndef RTLD_DEBUG |
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| 96 | close_console(); |
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| 97 | #endif |
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| 3400 | svoboda | 98 | program_run(__pcb->entry, __pcb); |
| 2933 | svoboda | 99 | } |
| 100 | |||
| 3400 | svoboda | 101 | int main(int argc, char *argv[]) |
| 102 | { |
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| 3673 | svoboda | 103 | rtld_main(); |
| 3400 | svoboda | 104 | return 0; |
| 105 | } |
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| 106 | |||
| 2933 | svoboda | 107 | /** @} |
| 108 | */ |