WebSVN – HelenOS – Diff – /branches/dynload/uspace/lib/rtld/include/dynamic.h


/*
 * 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 generic
 * @{
 */
/** @file
 */
 
#ifndef DYNAMIC_H_
#define DYNAMIC_H_
 
#include <bool.h>
#include <elf_dyn.h>
#include <arch/dynamic.h>
 
/**
 * Holds the data extracted from an ELF Dynamic section.
 *
 * The data is already pre-processed: Pointers are adjusted
 * to their final run-time values by adding the load bias
 * and indices into the symbol table are converted to pointers.
 */
typedef struct dyn_info {
    /** Type of relocations used for the PLT, either DT_REL or DT_RELA */
    int plt_rel;
 
    /** Relocation table without explicit addends */
    void *rel;
    size_t rel_sz;
    size_t rel_ent;
 
    /** Relocation table with explicit addends */
    void *rela;
    size_t rela_sz;
    size_t rela_ent;
 
    /** PLT relocation table */
    void *jmp_rel;
    size_t plt_rel_sz;
 
    /** Pointer to PLT/GOT (processor-specific) */
    void *plt_got;
 
    /** Hash table */
    elf_word *hash;
 
    /** String table */
    char *str_tab;
    size_t str_sz;
 
    /** Symbol table */
    void *sym_tab;
    size_t sym_ent;
 
    void *init; /**< Module initialization code */
    void *fini; /**< Module cleanup code */
 
    char *soname;   /**< Library identifier */
    char *rpath;    /**< Library search path list */
 
    bool symbolic;
    bool text_rel;
    bool bind_now;
 
    /* Assume for now that there's at most one needed library */
    char *needed;
 
    /** Pointer to the module's dynamic section */
    elf_dyn_t *dynamic;
 
    /** Architecture-specific info. */
    dyn_info_arch_t arch;
} dyn_info_t;
 
void dynamic_parse(elf_dyn_t *dyn_ptr, size_t bias, dyn_info_t *info);
void dyn_parse_arch(elf_dyn_t *dp, size_t bias, dyn_info_t *info);
 
#endif
 
/** @}
 */
 

Rev 2999	Rev 3772
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 generic	29	/** @addtogroup generic
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#ifndef DYNAMIC_H_	35	#ifndef DYNAMIC_H_
36	#define DYNAMIC_H_	36	#define DYNAMIC_H_
37		37
38	#include <bool.h>	38	#include <bool.h>
39	#include <elf_dyn.h>	39	#include <elf_dyn.h>
-		40	#include <arch/dynamic.h>
40		41
41	/**	42	/**
42	* Holds the data extracted from an ELF Dynamic section.	43	* Holds the data extracted from an ELF Dynamic section.
43	*	44	*
44	* The data is already pre-processed: Pointers are adjusted	45	* The data is already pre-processed: Pointers are adjusted
45	* to their final run-time values by adding the load bias	46	* to their final run-time values by adding the load bias
46	* and indices into the symbol table are converted to pointers.	47	* and indices into the symbol table are converted to pointers.
47	*/	48	*/
48	typedef struct {	49	typedef struct dyn_info {
49	/** Type of relocations used for the PLT, either DT_REL or DT_RELA */	50	/** Type of relocations used for the PLT, either DT_REL or DT_RELA */
50	int plt_rel;	51	int plt_rel;
51		52
52	/** Relocation table without explicit addends */	53	/** Relocation table without explicit addends */
53	void *rel;	54	void *rel;
54	size_t rel_sz;	55	size_t rel_sz;
55	size_t rel_ent;	56	size_t rel_ent;
56		57
57	/** Relocation table with explicit addends */	58	/** Relocation table with explicit addends */
58	void *rela;	59	void *rela;
59	size_t rela_sz;	60	size_t rela_sz;
60	size_t rela_ent;	61	size_t rela_ent;
61		62
62	/** PLT relocation table */	63	/** PLT relocation table */
63	void *jmp_rel;	64	void *jmp_rel;
64	size_t plt_rel_sz;	65	size_t plt_rel_sz;
65		66
66	/** Pointer to PLT/GOT (processor-specific) */	67	/** Pointer to PLT/GOT (processor-specific) */
67	void *plt_got;	68	void *plt_got;
68		69
69	/** Hash table */	70	/** Hash table */
70	elf_word *hash;	71	elf_word *hash;
71		72
72	/** String table */	73	/** String table */
73	char *str_tab;	74	char *str_tab;
74	size_t str_sz;	75	size_t str_sz;
75		76
76	/** Symbol table */	77	/** Symbol table */
77	void *sym_tab;	78	void *sym_tab;
78	size_t sym_ent;	79	size_t sym_ent;
79		80
80	void init; /< Module initialization code /	81	void init; /< Module initialization code /
81	void fini; /< Module cleanup code /	82	void fini; /< Module cleanup code /
82		83
83	char soname; /< Library identifier /	84	char soname; /< Library identifier /
84	char rpath; /< Library search path list /	85	char rpath; /< Library search path list /
85		86
86	bool symbolic;	87	bool symbolic;
87	bool text_rel;	88	bool text_rel;
88	bool bind_now;	89	bool bind_now;
89		90
90	/* Assume for now that there's at most one needed library */	91	/* Assume for now that there's at most one needed library */
91	char *needed;	92	char *needed;
92		93
93	/** Pointer to the module's dynamic section */	94	/** Pointer to the module's dynamic section */
94	elf_dyn_t *dynamic;	95	elf_dyn_t *dynamic;
-		96
-		97	/** Architecture-specific info. */
-		98	dyn_info_arch_t arch;
95	} dyn_info_t;	99	} dyn_info_t;
96		100
97	void dynamic_parse(elf_dyn_t dyn_ptr, size_t bias, dyn_info_t info);	101	void dynamic_parse(elf_dyn_t dyn_ptr, size_t bias, dyn_info_t info);
-		102	void dyn_parse_arch(elf_dyn_t dp, size_t bias, dyn_info_t info);
98		103
99	#endif	104	#endif
100		105
101	/** @}	106	/** @}
102	*/	107	*/
103		108

Subversion Repositories HelenOS

(root)/branches/dynload/uspace/lib/rtld/include/dynamic.h – Rev 2999 → 3772