Subversion Repositories HelenOS

Rev

Rev 2996 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2933 svoboda 1 
/*
2 
 * Copyright (c) 2008 Jiri Svoboda
3 
 * All rights reserved.
4 
 *
5 
 * Redistribution and use in source and binary forms, with or without
6 
 * modification, are permitted provided that the following conditions
7 
 * are met:
8 
 *
9 
 * - Redistributions of source code must retain the above copyright
10 
 *   notice, this list of conditions and the following disclaimer.
11 
 * - Redistributions in binary form must reproduce the above copyright
12 
 *   notice, this list of conditions and the following disclaimer in the
13 
 *   documentation and/or other materials provided with the distribution.
14 
 * - The name of the author may not be used to endorse or promote products
15 
 *   derived from this software without specific prior written permission.
16 
 *
17 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
 */
28 
 
29 
/** @addtogroup rtld rtld
30 
 * @brief
31 
 * @{
32 
 */
33 
/**
34 
 * @file
35 
 */
36 
 
2952 svoboda 37 
#include <stdio.h>
2954 svoboda 38 
#include <unistd.h>
39 
#include <fcntl.h>
2952 svoboda 40 
 
2965 svoboda 41 
#include <rtld.h>
2968 svoboda 42 
#include <dynamic.h>
2969 svoboda 43 
#include <pcb.h>
44 
#include <elf_load.h>
2999 svoboda 45 
#include <module.h>
2973 svoboda 46 
#include <arch.h>
2959 svoboda 47 
 
2980 svoboda 48 
runtime_env_t runtime_env;
49 
 
2933 svoboda 50 
void _rtld_main(void)
51 
{
2959 svoboda 52 
    pcb_t *pcb;
2969 svoboda 53 
    elf_info_t lib_info;
2973 svoboda 54 
    static module_t prog;
2978 svoboda 55 
    static module_t lib;
2981 svoboda 56 
    module_t *rtld;
2969 svoboda 57 
    int rc;
2933 svoboda 58 
 
2959 svoboda 59 
    printf("Hello, world! (from rtld)\n");
2933 svoboda 60 
 
2999 svoboda 61 
    /*
62 
     * First we need to process dynamic sections of the two modules
63 
     * that have been already loaded, that is, of ourselves and of
64 
     * the executable program.
65 
     */
66 
 
2981 svoboda 67 
    /* rtld_dynamic and rtld->bias were filled out by the bootstrap code */
68 
    rtld = &runtime_env.rtld;
2996 svoboda 69 
    printf("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic);
2981 svoboda 70 
    dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn);
71 
 
2990 svoboda 72 
    pcb = __pcb_get();
2996 svoboda 73 
    printf("Parse program .dynamic section at 0x%x\n", pcb->dynamic);
2973 svoboda 74 
    dynamic_parse(pcb->dynamic, 0, &prog.dyn);
2978 svoboda 75 
    prog.bias = 0;
2980 svoboda 76 
    prog.dyn.soname = "[program]";
2969 svoboda 77 
 
2999 svoboda 78 
    /* Initialize list of loaded modules */
79 
    list_initialize(&runtime_env.modules_head);
80 
    list_append(&prog.modules_link, &runtime_env.modules_head);
81 
    list_append(&rtld->modules_link, &runtime_env.modules_head);
2969 svoboda 82 
 
2999 svoboda 83 
    /* Pointer to program module. Used as root of the dependency graph */
2980 svoboda 84 
    runtime_env.program = &prog;
85 
 
2999 svoboda 86 
    /*
87 
     * Now we can continue with loading all other modules.
88 
     */
2973 svoboda 89 
 
2999 svoboda 90 
    printf("Load all program dependencies\n");
91 
    module_load_deps(&prog);
2981 svoboda 92 
 
2999 svoboda 93 
    /*
94 
     * Now relocate/link all modules together.
95 
     */
2980 svoboda 96 
 
2999 svoboda 97 
    /* Process relocations in all modules */
98 
    printf("Relocate all modules\n");
99 
    modules_process_relocs();
100 
 
101 
    /*
102 
     * Finally, run the main program.
103 
     */
2996 svoboda 104 
    printf("Run program.. (at 0x%x)\n", (uintptr_t)pcb->entry);
2959 svoboda 105 
    pcb->entry();
2933 svoboda 106 
}
107 
 
108 
/** @}
109 
 */