xref: /freebsd/sys/sys/link_elf.h (revision 6780ab54325a71e7e70112b11657973edde8655e)
1 /*
2  * Copyright (c) 1993 Paul Kranenburg
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *      This product includes software developed by Paul Kranenburg.
16  * 4. The name of the author may not be used to endorse or promote products
17  *    derived from this software without specific prior written permission
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  *
30  * $FreeBSD$
31  */
32 
33 /*
34  * RRS section definitions.
35  *
36  * The layout of some data structures defined in this header file is
37  * such that we can provide compatibility with the SunOS 4.x shared
38  * library scheme.
39  */
40 
41 #ifndef _SYS_LINK_ELF_H_
42 #define _SYS_LINK_ELF_H_
43 
44 #include <sys/types.h>
45 
46 struct link_map {
47 	caddr_t		l_addr;			/* Base Address of library */
48 #ifdef __mips__
49 	caddr_t		l_offs;			/* Load Offset of library */
50 #endif
51 	const char	*l_name;		/* Absolute Path to Library */
52 	const void	*l_ld;			/* Pointer to .dynamic in memory */
53 	struct link_map	*l_next, *l_prev;	/* linked list of of mapped libs */
54 };
55 
56 struct r_debug {
57 	int		r_version;		/* not used */
58 	struct link_map *r_map;			/* list of loaded images */
59 	void		(*r_brk)(struct r_debug *, struct link_map *);
60 						/* pointer to break point */
61 	enum {
62 	    RT_CONSISTENT,			/* things are stable */
63 	    RT_ADD,				/* adding a shared library */
64 	    RT_DELETE				/* removing a shared library */
65 	}		r_state;
66 };
67 
68 #endif /* _SYS_LINK_ELF_H_ */
69