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2928 svoboda 1 
/*
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 * Copyright (c) 2008 Jiri Svoboda
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup loader
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 * @brief   Loads and runs programs from VFS.
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 * @{
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 */
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/**
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 * @file
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 */
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <as.h>
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#include <elf.h>
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#include <elf_load.h>
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#include <pcb.h>
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#define RTLD_BIAS 0x80000
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int main(int argc, char *argv[])
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{
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    elf_info_t prog_info;
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    elf_info_t interp_info;
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    char *file_name;
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    pcb_t *pcb;
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    int rc;
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    printf("This is loader\n");
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    getchar();
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    printf("Load program\n");
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    rc = elf_load_file("/dltest", 0, &prog_info);
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//  rc = elf_load_file("/tetris", 0, &prog_info);
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    if (rc < 0) {
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        printf("failed to load program\n");
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        return 1;
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    }
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    printf("Create PCB\n");
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    if (elf_create_pcb(&prog_info) < 0) return 1;
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//  elf_run(&prog_info);
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//  getchar();
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    printf("Load dynamic linker\n");
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    file_name = "/rtld.so";
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    printf("open and read '%s'...\n", file_name);
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    rc = elf_load_file(file_name, RTLD_BIAS, &interp_info);
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    if (rc < 0) {
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        printf("failed to load dynamic linker\n");
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        return 1;
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    }
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    /*
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     * Provide rtld with some useful data
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     */
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    pcb = (pcb_t *)PCB_ADDRESS;
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    pcb->rtld_dynamic = interp_info.dynamic;
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    pcb->rtld_bias = RTLD_BIAS;
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    printf("run dynamic linker\n");
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    elf_run(&interp_info);
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    /* not reached */
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    return 0;
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}
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/** @}
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 */