xref: /onnv-gate/usr/src/cmd/sgs/libelf/common/member.h (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*	Copyright (c) 1988 AT&T	*/
23*0Sstevel@tonic-gate /*	  All Rights Reserved  	*/
24*0Sstevel@tonic-gate 
25*0Sstevel@tonic-gate 
26*0Sstevel@tonic-gate /*
27*0Sstevel@tonic-gate  * Copyright (c) 1995 by Sun Microsystems, Inc.
28*0Sstevel@tonic-gate  * All rights reserved.
29*0Sstevel@tonic-gate  */
30*0Sstevel@tonic-gate 
31*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI" 	/* SVr4.0 1.2	*/
32*0Sstevel@tonic-gate 
33*0Sstevel@tonic-gate 
34*0Sstevel@tonic-gate 
35*0Sstevel@tonic-gate /*
36*0Sstevel@tonic-gate  * Member handling
37*0Sstevel@tonic-gate  *	Archive members have an ASCII header.  A Member structure
38*0Sstevel@tonic-gate  *	holds internal information.  Because the ASCII file header
39*0Sstevel@tonic-gate  *	may be clobbered, Member holds a private, safe copy.
40*0Sstevel@tonic-gate  *	The ar_name member of m_hdr points at m_name except for string
41*0Sstevel@tonic-gate  *	table names.  Ar_rawname in m_hdr always points at m_raw.
42*0Sstevel@tonic-gate  *
43*0Sstevel@tonic-gate  *	m_raw	The original ar_name with null termination.
44*0Sstevel@tonic-gate  *		E.g., "name/           "
45*0Sstevel@tonic-gate  *
46*0Sstevel@tonic-gate  *	m_name	The processed name, with '/' terminator changed to '\0'.
47*0Sstevel@tonic-gate  *		Unused for string table names.  E.g., "name\0           "
48*0Sstevel@tonic-gate  *
49*0Sstevel@tonic-gate  *	To improve performance of member lookup we allocate lists which
50*0Sstevel@tonic-gate  * 	contain MEMIDENTNO members:
51*0Sstevel@tonic-gate  *
52*0Sstevel@tonic-gate  *	ed_memlist -->   ---------------------
53*0Sstevel@tonic-gate  *			|       m_next        |
54*0Sstevel@tonic-gate  *			|       m_end         |
55*0Sstevel@tonic-gate  *			|       m_free        |
56*0Sstevel@tonic-gate  *			|---------------------|
57*0Sstevel@tonic-gate  *			| m_offset | m_member |
58*0Sstevel@tonic-gate  *			| m_offset | m_member |
59*0Sstevel@tonic-gate  *			|     "    |    "     |
60*0Sstevel@tonic-gate  *			 ---------------------
61*0Sstevel@tonic-gate  */
62*0Sstevel@tonic-gate 
63*0Sstevel@tonic-gate 
64*0Sstevel@tonic-gate #define	ARSZ(m)		(sizeof ((struct ar_hdr *)0)->m)
65*0Sstevel@tonic-gate 
66*0Sstevel@tonic-gate #define	MEMIDENTNO	126
67*0Sstevel@tonic-gate 
68*0Sstevel@tonic-gate struct	Member
69*0Sstevel@tonic-gate {
70*0Sstevel@tonic-gate 	Elf_Arhdr	m_hdr;
71*0Sstevel@tonic-gate 	int		m_err;
72*0Sstevel@tonic-gate 	long		m_slide;
73*0Sstevel@tonic-gate 	char		m_raw[ARSZ(ar_name)+1];
74*0Sstevel@tonic-gate 	char		m_name[ARSZ(ar_name)+1];
75*0Sstevel@tonic-gate };
76*0Sstevel@tonic-gate 
77*0Sstevel@tonic-gate struct	Memident
78*0Sstevel@tonic-gate {
79*0Sstevel@tonic-gate 	char *		m_offset;
80*0Sstevel@tonic-gate 	struct Member *	m_member;
81*0Sstevel@tonic-gate };
82*0Sstevel@tonic-gate 
83*0Sstevel@tonic-gate struct	Memlist
84*0Sstevel@tonic-gate {
85*0Sstevel@tonic-gate 	struct Memlist *	m_next;
86*0Sstevel@tonic-gate 	struct Memident *	m_end;
87*0Sstevel@tonic-gate 	struct Memident *	m_free;
88*0Sstevel@tonic-gate };
89