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 <arch.h>
 
runtime_env_t runtime_env;
 
void _rtld_main(void)
{
    pcb_t *pcb;
    elf_info_t lib_info;
    static module_t prog;
    static module_t lib;
    int rc;
 
    printf("Hello, world! (from rtld)\n");
    getchar();
 
    printf("Parse .dynamic section\n");
    pcb = (pcb_t *)PCB_ADDRESS;
    dynamic_parse(pcb->dynamic, 0, &prog.dyn);
    prog.bias = 0;
    prog.dyn.soname = "[program]";
 
    printf("Program requested library '%s'\n", prog.dyn.needed);
   
    rc = elf_load_file("/libtest.so.0", 0x20000, &lib_info);
    if (rc < 0) {
        printf("failed to load library\n");
        return;
    }
 
    dynamic_parse(lib_info.dynamic, 0x20000, &lib.dyn);
    lib.bias = 0x20000;
    printf("lib.bias=0x%x\n", lib.bias);
 
    runtime_env.program = &prog;
    runtime_env.libc = &lib;
    runtime_env.rtld = NULL;
 
    /* Parse program's relocation tables */
    rel_table_process(&prog, prog.dyn.rel, prog.dyn.rel_sz);
    rel_table_process(&prog, prog.dyn.jmp_rel, prog.dyn.plt_rel_sz);
 
    printf("lib.bias=0x%x\n", lib.bias);
 
    printf("Run program..\n");
    pcb->entry();
}
 
/** @}
 */
 

Rev 2978	Rev 2980
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 <arch.h>	45	#include <arch.h>
46		46
-		47	runtime_env_t runtime_env;
-		48
47	void _rtld_main(void)	49	void _rtld_main(void)
48	{	50	{
49	pcb_t *pcb;	51	pcb_t *pcb;
50	elf_info_t lib_info;	52	elf_info_t lib_info;
51	static module_t prog;	53	static module_t prog;
52	static module_t lib;	54	static module_t lib;
53	int rc;	55	int rc;
54		56
55	printf("Hello, world! (from rtld)\n");	57	printf("Hello, world! (from rtld)\n");
56	getchar();	58	getchar();
57		59
58	printf("Parse .dynamic section\n");	60	printf("Parse .dynamic section\n");
59	pcb = (pcb_t *)PCB_ADDRESS;	61	pcb = (pcb_t *)PCB_ADDRESS;
60	dynamic_parse(pcb->dynamic, 0, &prog.dyn);	62	dynamic_parse(pcb->dynamic, 0, &prog.dyn);
61	prog.bias = 0;	63	prog.bias = 0;
-		64	prog.dyn.soname = "[program]";
62		65
63	printf("Program requested library '%s'\n", prog.dyn.needed);	66	printf("Program requested library '%s'\n", prog.dyn.needed);
64		67
65	rc = elf_load_file("/libtest.so.0", 0x20000, &lib_info);	68	rc = elf_load_file("/libtest.so.0", 0x20000, &lib_info);
66	if (rc < 0) {	69	if (rc < 0) {
67	printf("failed to load library\n");	70	printf("failed to load library\n");
68	return;	71	return;
69	}	72	}
70		73
71	dynamic_parse(lib_info.dynamic, 0x20000, &lib.dyn);	74	dynamic_parse(lib_info.dynamic, 0x20000, &lib.dyn);
72	lib.bias = 0x20000;	75	lib.bias = 0x20000;
-		76	printf("lib.bias=0x%x\n", lib.bias);
-		77
-		78	runtime_env.program = &prog;
-		79	runtime_env.libc = &lib;
-		80	runtime_env.rtld = NULL;
73		81
74	/* Parse program's relocation tables */	82	/* Parse program's relocation tables */
75	rel_table_process(&prog, prog.dyn.rel, prog.dyn.rel_sz, &lib);	83	rel_table_process(&prog, prog.dyn.rel, prog.dyn.rel_sz);
76	rel_table_process(&prog, prog.dyn.jmp_rel, prog.dyn.plt_rel_sz, &lib);	84	rel_table_process(&prog, prog.dyn.jmp_rel, prog.dyn.plt_rel_sz);
-		85
-		86	printf("lib.bias=0x%x\n", lib.bias);
77		87
78	printf("Run program..\n");	88	printf("Run program..\n");
79	pcb->entry();	89	pcb->entry();
80	}	90	}
81		91
82	/** @}	92	/** @}
83	*/	93	*/
84		94

Subversion Repositories HelenOS

(root)/branches/dynload/uspace/lib/rtld/rtld.c @ 3869 – Rev 2978 → 2980