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Rev 2972 Rev 2973
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/*
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/*
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 * Copyright (c) 2008 Jiri Svoboda
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 * Copyright (c) 2008 Jiri Svoboda
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 * All rights reserved.
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 * All rights reserved.
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 *
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 *
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 * Redistribution and use in source and binary forms, with or without
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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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 * modification, are permitted provided that the following conditions
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 * are met:
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 * are met:
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 *
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 *
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 * - Redistributions of source code must retain the above copyright
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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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 *   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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 * - 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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 *   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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 *   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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 * - 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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 *   derived from this software without specific prior written permission.
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 *
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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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 * 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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 * 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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 * 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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 * 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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 * 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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 * 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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 * 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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 * 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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 * (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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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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/** @addtogroup rtld rtld
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/** @addtogroup rtld rtld
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 * @brief
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 * @brief
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 * @{
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 * @{
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 */
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 */
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/**
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/**
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 * @file
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 * @file
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 */
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 */
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#include <stdio.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <fcntl.h>
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#include <rtld.h>
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#include <rtld.h>
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#include <dynamic.h>
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#include <dynamic.h>
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#include <pcb.h>
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#include <pcb.h>
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#include <elf_load.h>
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#include <elf_load.h>
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 - 
 
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static void kputint(unsigned i)
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{
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    unsigned dummy;
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#include <arch.h>
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    asm volatile (
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        "movl $30, %%eax;"
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        "int $0x30"
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        : "=d" (dummy) /* output - %edx clobbered */
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        : "d" (i) /* input */
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        : "%eax","%ecx" /* all scratch registers clobbered */
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    );
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}
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void _rtld_main(void)
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void _rtld_main(void)
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{
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{
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    pcb_t *pcb;
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    pcb_t *pcb;
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    static dyn_info_t dyn_info;
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    elf_info_t lib_info;
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    elf_info_t lib_info;
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    static module_t prog;
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    int rc;
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    int rc;
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    printf("Hello, world! (from rtld)\n");
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    printf("Hello, world! (from rtld)\n");
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    getchar();
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    getchar();
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    printf("Parse .dynamic section\n");
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    printf("Parse .dynamic section\n");
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    pcb = (pcb_t *)PCB_ADDRESS;
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    pcb = (pcb_t *)PCB_ADDRESS;
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    dynamic_parse(pcb->dynamic, 0, &dyn_info);
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    dynamic_parse(pcb->dynamic, 0, &prog.dyn);
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    printf("Program requested library '%s'\n", dyn_info.needed);
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    printf("Program requested library '%s'\n", prog.dyn.needed);
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    rc = elf_load_file("/libtest.so.0", 0x20000, &lib_info);
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    rc = elf_load_file("/libtest.so.0", 0x20000, &lib_info);
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    if (rc < 0) {
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    if (rc < 0) {
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        printf("failed to load library\n");
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        printf("failed to load library\n");
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        return;
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        return;
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    }
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    }
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    /* Parse program's relocation tables */
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    rel_table_process(&prog, prog.dyn.rel, prog.dyn.rel_sz);
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    rel_table_process(&prog, prog.dyn.jmp_rel, prog.dyn.plt_rel_sz);
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    printf("Run program..\n");
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    printf("Run program..\n");
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    pcb->entry();
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    pcb->entry();
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}
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}
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/** @}
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/** @}
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 */
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 */
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