| 0,0 → 1,130 |
|---|
| /* |
| * Copyright (c) 2008 Jiri Svoboda |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup rtld rtld |
| * @brief |
| * @{ |
| */ |
| /** |
| * @file |
| */ |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <loader/pcb.h> |
| |
| #include <rtld.h> |
| #include <dynamic.h> |
| #include <elf_load.h> |
| #include <module.h> |
| #include <rtld_arch.h> |
| |
| runtime_env_t runtime_env; |
| |
| void program_run(void *entry, pcb_t *pcb); |
| |
| void _rtld_main(void) |
| { |
| static module_t prog; |
| // module_t *rtld; |
| |
| DPRINTF("Hello, world! (from rtld)\n"); |
| |
| /* |
| * First we need to process dynamic sections of the two modules |
| * that have been already loaded, that is, of ourselves and of |
| * the executable program. |
| */ |
| |
| /* rtld_dynamic and rtld->bias were filled out by the bootstrap code */ |
| // rtld = &runtime_env.rtld; |
| // DPRINTF("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic); |
| // dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn); |
| |
| DPRINTF("Parse program .dynamic section at 0x%x\n", __pcb->dynamic); |
| dynamic_parse(__pcb->dynamic, 0, &prog.dyn); |
| prog.bias = 0; |
| prog.dyn.soname = "[program]"; |
| |
| /* Initialize list of loaded modules */ |
| list_initialize(&runtime_env.modules_head); |
| list_append(&prog.modules_link, &runtime_env.modules_head); |
| // list_append(&rtld->modules_link, &runtime_env.modules_head); |
| |
| /* Pointer to program module. Used as root of the dependency graph */ |
| runtime_env.program = &prog; |
| |
| /* |
| * Now we can continue with loading all other modules. |
| */ |
| |
| DPRINTF("Load all program dependencies\n"); |
| module_load_deps(&prog); |
| |
| /* |
| * Now relocate/link all modules together. |
| */ |
| |
| /* Process relocations in all modules */ |
| DPRINTF("Relocate all modules\n"); |
| modules_process_relocs(); |
| |
| /* |
| * Finally, run the main program. |
| */ |
| DPRINTF("Run program.. (at 0x%x)\n", (uintptr_t)__pcb->entry); |
| |
| #ifndef RTLD_DEBUG |
| close_console(); |
| #endif |
| //__pcb->entry(); |
| program_run(__pcb->entry, __pcb); |
| } |
| |
| /** Fake main to satisfy dependency from libc */ |
| int main(int argc, char *argv[]) |
| { |
| return 0; |
| } |
| /* |
| typedef void (*ep2)(void *); |
| |
| void program_run(void *entry, pcb_t *pcb) |
| { |
| asm ( |
| // "xorl %%ebx, %%ebx\n" |
| // "movl 0(%%ebx), %%ecx\n" |
| "mov %%eax, %%ebx\n" |
| "jmp *%0\n" |
| :: "m" (entry), "a" (pcb) |
| ); |
| }*/ |
| |
| /** @} |
| */ |