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;
    module_t *rtld;
    int rc;
 
    printf("Hello, world! (from rtld)\n");
    getchar();
 
    /* rtld_dynamic and rtld->bias were filled out by the bootstrap code */
    rtld = &runtime_env.rtld;
    dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn);
 
    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("/libc.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;
 
    /* Parse program's relocation tables */
    printf("Resolve references in program\n");
    rel_table_process(&prog, prog.dyn.rel, prog.dyn.rel_sz);
    rel_table_process(&prog, prog.dyn.jmp_rel, prog.dyn.plt_rel_sz);
 
    /* Parse lib's relocation tables */
    printf("Resolve references in library\n");
    rel_table_process(&lib, lib.dyn.rel, lib.dyn.rel_sz);
    rel_table_process(&lib, lib.dyn.jmp_rel, lib.dyn.plt_rel_sz);
 
    printf("lib.bias=0x%x\n", lib.bias);
 
    printf("Run program..\n");
    pcb->entry();
}
 
/** @}
 */
 

Rev 2981	Rev 2982
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;	47	runtime_env_t runtime_env;
48		48
49	void _rtld_main(void)	49	void _rtld_main(void)
50	{	50	{
51	pcb_t *pcb;	51	pcb_t *pcb;
52	elf_info_t lib_info;	52	elf_info_t lib_info;
53	static module_t prog;	53	static module_t prog;
54	static module_t lib;	54	static module_t lib;
55	module_t *rtld;	55	module_t *rtld;
56	int rc;	56	int rc;
57		57
58	printf("Hello, world! (from rtld)\n");	58	printf("Hello, world! (from rtld)\n");
59	getchar();	59	getchar();
60		60
61	/* rtld_dynamic and rtld->bias were filled out by the bootstrap code */	61	/* rtld_dynamic and rtld->bias were filled out by the bootstrap code */
62	rtld = &runtime_env.rtld;	62	rtld = &runtime_env.rtld;
63	dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn);	63	dynamic_parse(runtime_env.rtld_dynamic, rtld->bias, &rtld->dyn);
64		64
65	printf("Parse .dynamic section\n");	65	printf("Parse .dynamic section\n");
66	pcb = (pcb_t *)PCB_ADDRESS;	66	pcb = (pcb_t *)PCB_ADDRESS;
67	dynamic_parse(pcb->dynamic, 0, &prog.dyn);	67	dynamic_parse(pcb->dynamic, 0, &prog.dyn);
68	prog.bias = 0;	68	prog.bias = 0;
69	prog.dyn.soname = "[program]";	69	prog.dyn.soname = "[program]";
70		70
71	printf("Program requested library '%s'\n", prog.dyn.needed);	71	printf("Program requested library '%s'\n", prog.dyn.needed);
72		72
73	rc = elf_load_file("/libtest.so.0", 0x20000, &lib_info);	73	rc = elf_load_file("/libc.so.0", 0x20000, &lib_info);
74	if (rc < 0) {	74	if (rc < 0) {
75	printf("failed to load library\n");	75	printf("failed to load library\n");
76	return;	76	return;
77	}	77	}
78		78
79	dynamic_parse(lib_info.dynamic, 0x20000, &lib.dyn);	79	dynamic_parse(lib_info.dynamic, 0x20000, &lib.dyn);
80	lib.bias = 0x20000;	80	lib.bias = 0x20000;
81	printf("lib.bias=0x%x\n", lib.bias);	81	printf("lib.bias=0x%x\n", lib.bias);
82		82
83	runtime_env.program = &prog;	83	runtime_env.program = &prog;
84	runtime_env.libc = &lib;	84	runtime_env.libc = &lib;
85		85
86	/* Parse program's relocation tables */	86	/* Parse program's relocation tables */
87	printf("Resolve references in program\n");	87	printf("Resolve references in program\n");
88	rel_table_process(&prog, prog.dyn.rel, prog.dyn.rel_sz);	88	rel_table_process(&prog, prog.dyn.rel, prog.dyn.rel_sz);
89	rel_table_process(&prog, prog.dyn.jmp_rel, prog.dyn.plt_rel_sz);	89	rel_table_process(&prog, prog.dyn.jmp_rel, prog.dyn.plt_rel_sz);
90		90
91	/* Parse lib's relocation tables */	91	/* Parse lib's relocation tables */
92	printf("Resolve references in library\n");	92	printf("Resolve references in library\n");
93	rel_table_process(&lib, lib.dyn.rel, lib.dyn.rel_sz);	93	rel_table_process(&lib, lib.dyn.rel, lib.dyn.rel_sz);
94	rel_table_process(&lib, lib.dyn.jmp_rel, lib.dyn.plt_rel_sz);	94	rel_table_process(&lib, lib.dyn.jmp_rel, lib.dyn.plt_rel_sz);
95		95
96	printf("lib.bias=0x%x\n", lib.bias);	96	printf("lib.bias=0x%x\n", lib.bias);
97		97
98	printf("Run program..\n");	98	printf("Run program..\n");
99	pcb->entry();	99	pcb->entry();
100	}	100	}
101		101
102	/** @}	102	/** @}
103	*/	103	*/
104		104

Subversion Repositories HelenOS

(root)/branches/dynload/uspace/lib/rtld/rtld.c – Rev 2981 → 2982