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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 <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");

	getchar();

	/* rtld_dynamic and rtld->bias were filled out by the bootstrap code */

	rtld = &runtime_env.rtld;

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

	printf("Parse .dynamic section\n");

	pcb = (pcb_t *)PCB_ADDRESS;

	dynamic_parse(pcb->dynamic, 0, &prog.dyn);

	prog.bias = 0;

	prog.dyn.soname = "[program]";

	printf("Program requested library '%s'\n", prog.dyn.needed);

	rc = elf_load_file("/libtest.so.0", 0x20000, &lib_info);

	if (rc < 0) {

		printf("failed to load library\n");

		return;

	}

	dynamic_parse(lib_info.dynamic, 0x20000, &lib.dyn);

	lib.bias = 0x20000;

	printf("lib.bias=0x%x\n", lib.bias);

	runtime_env.program = &prog;

	runtime_env.libc = &lib;

	/* Parse program's relocation tables */

	printf("Resolve references in program\n");

	rel_table_process(&prog, prog.dyn.rel, prog.dyn.rel_sz);

	rel_table_process(&prog, prog.dyn.jmp_rel, prog.dyn.plt_rel_sz);

	/* Parse lib's relocation tables */

	printf("Resolve references in library\n");

	rel_table_process(&lib, lib.dyn.rel, lib.dyn.rel_sz);

	rel_table_process(&lib, lib.dyn.jmp_rel, lib.dyn.plt_rel_sz);

	printf("lib.bias=0x%x\n", lib.bias);

	printf("Run program..\n");

	pcb->entry();

}

/** @}

 */