0,0 → 1,108 |
/* |
* 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> |
|
/* from librtld */ |
#include <rtld.h> |
#include <dynamic.h> |
#include <elf_load.h> |
#include <module.h> |
|
void program_run(void *entry, pcb_t *pcb); |
|
int main(int argc, char *argv[]) |
{ |
static module_t prog; |
|
DPRINTF("Hello, world! (from dload)\n"); |
if (__pcb->dynamic == NULL) { |
printf("This is the dynamic loader. It is not supposed " |
"to be executed directly.\n"); |
return -1; |
} |
|
/* |
* First we need to process dynamic sections of the executable |
* program and insert it into the module graph. |
*/ |
|
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); |
|
/* Pointer to program module. Used as root of the module 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%lx)\n", (uintptr_t)__pcb->entry); |
|
#ifndef RTLD_DEBUG |
close_console(); |
#endif |
program_run(__pcb->entry, __pcb); |
|
/* not reached */ |
return 0; |
} |
|
/** @} |
*/ |