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 <loader/pcb.h>
 
#include <rtld.h>
#include <dynamic.h>
#include <elf_load.h>
#include <module.h>
#include <rtld_arch.h>
 
runtime_env_t runtime_env;
 
void program_run(void *entry, pcb_t *pcb);
 
static void rtld_main(void)
{
    static module_t prog;
//  module_t *rtld;
 
    DPRINTF("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;
//  DPRINTF("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic);
//  dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn);
 
    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 dependency 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();
 
    /*
     * 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);
}
 
/** Fake main to satisfy dependency from libc */
int main(int argc, char *argv[])
{
    rtld_main();
    return 0;
}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/** @}
 */
 

Rev 3562	Rev 3673
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	#include <rtld.h>	42	#include <rtld.h>
43	#include <dynamic.h>	43	#include <dynamic.h>
44	#include <elf_load.h>	44	#include <elf_load.h>
45	#include <module.h>	45	#include <module.h>
46	#include <rtld_arch.h>	46	#include <rtld_arch.h>
47		47
48	runtime_env_t runtime_env;	48	runtime_env_t runtime_env;
49		49
50	void program_run(void entry, pcb_t pcb);	50	void program_run(void entry, pcb_t pcb);
51		51
52	void _rtld_main(void)	52	static void rtld_main(void)
53	{	53	{
54	static module_t prog;	54	static module_t prog;
55	// module_t *rtld;	55	// module_t *rtld;
56		56
57	DPRINTF("Hello, world! (from rtld)\n");	57	DPRINTF("Hello, world! (from rtld)\n");
58		58
59	/*	59	/*
60	* First we need to process dynamic sections of the two modules	60	* First we need to process dynamic sections of the two modules
61	* that have been already loaded, that is, of ourselves and of	61	* that have been already loaded, that is, of ourselves and of
62	* the executable program.	62	* the executable program.
63	*/	63	*/
64		64
65	/* rtld_dynamic and rtld->bias were filled out by the bootstrap code */	65	/* rtld_dynamic and rtld->bias were filled out by the bootstrap code */
66	// rtld = &runtime_env.rtld;	66	// rtld = &runtime_env.rtld;
67	// DPRINTF("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic);	67	// DPRINTF("Parse rtld .dynamic section at 0x%x\n", runtime_env.rtld_dynamic);
68	// dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn);	68	// dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn);
69		69
70	DPRINTF("Parse program .dynamic section at 0x%x\n", __pcb->dynamic);	70	DPRINTF("Parse program .dynamic section at 0x%x\n", __pcb->dynamic);
71	dynamic_parse(__pcb->dynamic, 0, &prog.dyn);	71	dynamic_parse(__pcb->dynamic, 0, &prog.dyn);
72	prog.bias = 0;	72	prog.bias = 0;
73	prog.dyn.soname = "[program]";	73	prog.dyn.soname = "[program]";
74		74
75	/* Initialize list of loaded modules */	75	/* Initialize list of loaded modules */
76	list_initialize(&runtime_env.modules_head);	76	list_initialize(&runtime_env.modules_head);
77	list_append(&prog.modules_link, &runtime_env.modules_head);	77	list_append(&prog.modules_link, &runtime_env.modules_head);
78	// list_append(&rtld->modules_link, &runtime_env.modules_head);	-
79		78
80	/* Pointer to program module. Used as root of the dependency graph */	79	/* Pointer to program module. Used as root of the dependency graph */
81	runtime_env.program = &prog;	80	runtime_env.program = &prog;
82		81
83	/*	82	/*
84	* Now we can continue with loading all other modules.	83	* Now we can continue with loading all other modules.
85	*/	84	*/
86		85
87	DPRINTF("Load all program dependencies\n");	86	DPRINTF("Load all program dependencies\n");
88	module_load_deps(&prog);	87	module_load_deps(&prog);
89		88
90	/*	89	/*
91	* Now relocate/link all modules together.	90	* Now relocate/link all modules together.
92	*/	91	*/
93		92
94	/* Process relocations in all modules */	93	/* Process relocations in all modules */
95	DPRINTF("Relocate all modules\n");	94	DPRINTF("Relocate all modules\n");
96	modules_process_relocs();	95	modules_process_relocs();
97		96
98	/*	97	/*
99	* Finally, run the main program.	98	* Finally, run the main program.
100	*/	99	*/
101	DPRINTF("Run program.. (at 0x%x)\n", (uintptr_t)__pcb->entry);	100	DPRINTF("Run program.. (at 0x%lx)\n", (uintptr_t)__pcb->entry);
102		101
103	#ifndef RTLD_DEBUG	102	#ifndef RTLD_DEBUG
104	close_console();	103	close_console();
105	#endif	104	#endif
106	//__pcb->entry();	-
107	program_run(__pcb->entry, __pcb);	105	program_run(__pcb->entry, __pcb);
108	}	106	}
109		107
110	/** Fake main to satisfy dependency from libc */	108	/** Fake main to satisfy dependency from libc */
111	int main(int argc, char *argv[])	109	int main(int argc, char *argv[])
112	{	110	{
-		111	rtld_main();
113	return 0;	112	return 0;
114	}	113	}
115	/*	-
116	typedef void (ep2)(void );	-
117		-
118	void program_run(void entry, pcb_t pcb)	-
119	{	-
120	asm (	-
121	// "xorl %%ebx, %%ebx\n"	-
122	// "movl 0(%%ebx), %%ecx\n"	-
123	"mov %%eax, %%ebx\n"	-
124	"jmp *%0\n"	-
125	:: "m" (entry), "a" (pcb)	-
126	);	-
127	}*/	-
128		114
129	/** @}	115	/** @}
130	*/	116	*/
131		117

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(root)/branches/dynload/uspace/lib/rtld/rtld.c – Rev 3562 → 3673