WebSVN – HelenOS – Diff – /branches/dynload/uspace/lib/rtld/rtld.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 <rtld.h>
#include <dynamic.h>
#include <pcb.h>
#include <elf_load.h>
#include <module.h>
#include <arch.h>
 
runtime_env_t runtime_env;
 
void _rtld_main(void)
{
    pcb_t *pcb;
 
    static module_t prog;
 
    module_t *rtld;
 
 
    printf("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;
    printf("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic);
    dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn);
 
    pcb = __pcb_get();
    printf("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);
    list_append(&rtld->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.
     */
 
    printf("Load all program dependencies\n");
    module_load_deps(&prog);
 
    /*
     * Now relocate/link all modules together.
     */
 
    /* Process relocations in all modules */
    printf("Relocate all modules\n");
    modules_process_relocs();
 
    /*
     * Finally, run the main program.
     */
    printf("Run program.. (at 0x%x)\n", (uintptr_t)pcb->entry);
    pcb->entry();
}
 
/** @}
 */
 

Rev 2999	Rev 3000
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		40
41	#include <rtld.h>	41	#include <rtld.h>
42	#include <dynamic.h>	42	#include <dynamic.h>
43	#include <pcb.h>	43	#include <pcb.h>
44	#include <elf_load.h>	44	#include <elf_load.h>
45	#include <module.h>	45	#include <module.h>
46	#include <arch.h>	46	#include <arch.h>
47		47
48	runtime_env_t runtime_env;	48	runtime_env_t runtime_env;
49		49
50	void _rtld_main(void)	50	void _rtld_main(void)
51	{	51	{
52	pcb_t *pcb;	52	pcb_t *pcb;
53	elf_info_t lib_info;	-
54	static module_t prog;	53	static module_t prog;
55	static module_t lib;	-
56	module_t *rtld;	54	module_t *rtld;
57	int rc;	-
58		55
59	printf("Hello, world! (from rtld)\n");	56	printf("Hello, world! (from rtld)\n");
60		57
61	/*	58	/*
62	* First we need to process dynamic sections of the two modules	59	* First we need to process dynamic sections of the two modules
63	* that have been already loaded, that is, of ourselves and of	60	* that have been already loaded, that is, of ourselves and of
64	* the executable program.	61	* the executable program.
65	*/	62	*/
66		63
67	/* rtld_dynamic and rtld->bias were filled out by the bootstrap code */	64	/* rtld_dynamic and rtld->bias were filled out by the bootstrap code */
68	rtld = &runtime_env.rtld;	65	rtld = &runtime_env.rtld;
69	printf("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic);	66	printf("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic);
70	dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn);	67	dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn);
71		68
72	pcb = __pcb_get();	69	pcb = __pcb_get();
73	printf("Parse program .dynamic section at 0x%x\n", pcb->dynamic);	70	printf("Parse program .dynamic section at 0x%x\n", pcb->dynamic);
74	dynamic_parse(pcb->dynamic, 0, &prog.dyn);	71	dynamic_parse(pcb->dynamic, 0, &prog.dyn);
75	prog.bias = 0;	72	prog.bias = 0;
76	prog.dyn.soname = "[program]";	73	prog.dyn.soname = "[program]";
77		74
78	/* Initialize list of loaded modules */	75	/* Initialize list of loaded modules */
79	list_initialize(&runtime_env.modules_head);	76	list_initialize(&runtime_env.modules_head);
80	list_append(&prog.modules_link, &runtime_env.modules_head);	77	list_append(&prog.modules_link, &runtime_env.modules_head);
81	list_append(&rtld->modules_link, &runtime_env.modules_head);	78	list_append(&rtld->modules_link, &runtime_env.modules_head);
82		79
83	/* Pointer to program module. Used as root of the dependency graph */	80	/* Pointer to program module. Used as root of the dependency graph */
84	runtime_env.program = &prog;	81	runtime_env.program = &prog;
85		82
86	/*	83	/*
87	* Now we can continue with loading all other modules.	84	* Now we can continue with loading all other modules.
88	*/	85	*/
89		86
90	printf("Load all program dependencies\n");	87	printf("Load all program dependencies\n");
91	module_load_deps(&prog);	88	module_load_deps(&prog);
92		89
93	/*	90	/*
94	* Now relocate/link all modules together.	91	* Now relocate/link all modules together.
95	*/	92	*/
96		93
97	/* Process relocations in all modules */	94	/* Process relocations in all modules */
98	printf("Relocate all modules\n");	95	printf("Relocate all modules\n");
99	modules_process_relocs();	96	modules_process_relocs();
100		97
101	/*	98	/*
102	* Finally, run the main program.	99	* Finally, run the main program.
103	*/	100	*/
104	printf("Run program.. (at 0x%x)\n", (uintptr_t)pcb->entry);	101	printf("Run program.. (at 0x%x)\n", (uintptr_t)pcb->entry);
105	pcb->entry();	102	pcb->entry();
106	}	103	}
107		104
108	/** @}	105	/** @}
109	*/	106	*/
110		107

Subversion Repositories HelenOS

(root)/branches/dynload/uspace/lib/rtld/rtld.c – Rev 2999 → 3000