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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 <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);

static 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);

    /* 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%lx)\n", (uintptr_t)__pcb->entry);

#ifndef RTLD_DEBUG

    close_console();

#endif

    program_run(__pcb->entry, __pcb);

}

/** Fake main to satisfy dependency from libc */

int main(int argc, char *argv[])

{

    rtld_main();

    return 0;

}

/** @}

 */