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/*

 * 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 <rtld.h>

#include <dynamic.h>

#include <pcb.h>

#include <elf_load.h>

#include <module.h>

#include <arch.h>

runtime_env_t runtime_env;

void _rtld_main(void)

{

	pcb_t *pcb;

	elf_info_t lib_info;

	static module_t prog;

	static module_t lib;

	module_t *rtld;

	int rc;

	printf("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;

	printf("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic);

	dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn);

	pcb = __pcb_get();

	printf("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.

	 */

	printf("Load all program dependencies\n");

	module_load_deps(&prog);

	/*

	 * Now relocate/link all modules together.

	 */

	/* Process relocations in all modules */

	printf("Relocate all modules\n");

	modules_process_relocs();

	/*

	 * Finally, run the main program.

	 */

	printf("Run program.. (at 0x%x)\n", (uintptr_t)pcb->entry);

	pcb->entry();

}

/** @}

 */