WebSVN – HelenOS – Diff – /branches/dynload/uspace/app/dload/dload.c


/*
 * 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>
 
/* from librtld */
#include <rtld.h>
#include <dynamic.h>
#include <elf_load.h>
#include <module.h>
 
void program_run(void *entry, pcb_t *pcb);
 
runtime_env_t dload_re;
 
int main(int argc, char *argv[])
{
    static module_t prog;
 
    runtime_env = &dload_re;
 
    DPRINTF("Hello, world! (from dload)\n");
    if (__pcb->dynamic == NULL) {
        printf("This is the dynamic loader. It is not supposed "
            "to be executed directly.\n");
        return -1;
    }
 
    /*
     * First we need to process dynamic sections of the executable
     * program and insert it into the module graph.
     */
 
    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 module 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();
 
    /* Pass runtime evironment pointer through PCB. */
    __pcb->rtld_runtime = (void *) runtime_env;
 
    /*
     * 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);
 
    /* not reached */
    return 0;
}
 
/** @}
 */
 

Rev 3681	Rev 3686
1	/*	1	/*
2	* Copyright (c) 2008 Jiri Svoboda	2	* Copyright (c) 2008 Jiri Svoboda
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup rtld rtld	29	/** @addtogroup rtld rtld
30	* @brief	30	* @brief
31	* @{	31	* @{
32	*/	32	*/
33	/**	33	/**
34	* @file	34	* @file
35	*/	35	*/
36		36
37	#include <stdio.h>	37	#include <stdio.h>
38	#include <unistd.h>	38	#include <unistd.h>
39	#include <fcntl.h>	39	#include <fcntl.h>
40	#include <loader/pcb.h>	40	#include <loader/pcb.h>
41		41
42	/* from librtld */	42	/* from librtld */
43	#include <rtld.h>	43	#include <rtld.h>
44	#include <dynamic.h>	44	#include <dynamic.h>
45	#include <elf_load.h>	45	#include <elf_load.h>
46	#include <module.h>	46	#include <module.h>
47		47
48	void program_run(void entry, pcb_t pcb);	48	void program_run(void entry, pcb_t pcb);
49		49
-		50	runtime_env_t dload_re;
-		51
50	int main(int argc, char *argv[])	52	int main(int argc, char *argv[])
51	{	53	{
52	static module_t prog;	54	static module_t prog;
53		55
-		56	runtime_env = &dload_re;
-		57
54	DPRINTF("Hello, world! (from dload)\n");	58	DPRINTF("Hello, world! (from dload)\n");
55	if (__pcb->dynamic == NULL) {	59	if (__pcb->dynamic == NULL) {
56	printf("This is the dynamic loader. It is not supposed "	60	printf("This is the dynamic loader. It is not supposed "
57	"to be executed directly.\n");	61	"to be executed directly.\n");
58	return -1;	62	return -1;
59	}	63	}
60		64
61	/*	65	/*
62	* First we need to process dynamic sections of the executable	66	* First we need to process dynamic sections of the executable
63	* program and insert it into the module graph.	67	* program and insert it into the module graph.
64	*/	68	*/
65		69
66	DPRINTF("Parse program .dynamic section at 0x%x\n", __pcb->dynamic);	70	DPRINTF("Parse program .dynamic section at 0x%x\n", __pcb->dynamic);
67	dynamic_parse(__pcb->dynamic, 0, &prog.dyn);	71	dynamic_parse(__pcb->dynamic, 0, &prog.dyn);
68	prog.bias = 0;	72	prog.bias = 0;
69	prog.dyn.soname = "[program]";	73	prog.dyn.soname = "[program]";
70		74
71	/* Initialize list of loaded modules */	75	/* Initialize list of loaded modules */
72	list_initialize(&runtime_env.modules_head);	76	list_initialize(&runtime_env->modules_head);
73	list_append(&prog.modules_link, &runtime_env.modules_head);	77	list_append(&prog.modules_link, &runtime_env->modules_head);
74		78
75	/* Pointer to program module. Used as root of the module graph. */	79	/* Pointer to program module. Used as root of the module graph. */
76	runtime_env.program = &prog;	80	runtime_env->program = &prog;
77		81
78	/*	82	/*
79	* Now we can continue with loading all other modules.	83	* Now we can continue with loading all other modules.
80	*/	84	*/
81		85
82	DPRINTF("Load all program dependencies\n");	86	DPRINTF("Load all program dependencies\n");
83	module_load_deps(&prog);	87	module_load_deps(&prog);
84		88
85	/*	89	/*
86	* Now relocate/link all modules together.	90	* Now relocate/link all modules together.
87	*/	91	*/
88		92
89	/* Process relocations in all modules */	93	/* Process relocations in all modules */
90	DPRINTF("Relocate all modules\n");	94	DPRINTF("Relocate all modules\n");
91	modules_process_relocs();	95	modules_process_relocs();
92		96
-		97	/* Pass runtime evironment pointer through PCB. */
-		98	__pcb->rtld_runtime = (void *) runtime_env;
-		99
93	/*	100	/*
94	* Finally, run the main program.	101	* Finally, run the main program.
95	*/	102	*/
96	DPRINTF("Run program.. (at 0x%lx)\n", (uintptr_t)__pcb->entry);	103	DPRINTF("Run program.. (at 0x%lx)\n", (uintptr_t)__pcb->entry);
97		104
98	#ifndef RTLD_DEBUG	105	#ifndef RTLD_DEBUG
99	close_console();	106	close_console();
100	#endif	107	#endif
101	program_run(__pcb->entry, __pcb);	108	program_run(__pcb->entry, __pcb);
102		109
103	/* not reached */	110	/* not reached */
104	return 0;	111	return 0;
105	}	112	}
106		113
107	/** @}	114	/** @}
108	*/	115	*/
109		116

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(root)/branches/dynload/uspace/app/dload/dload.c – Rev 3681 → 3686