1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/* $OpenBSD: link.h,v 1.1 2002/04/08 04:51:48 fgsch Exp $ */
/*
* Copyright (c) 1996 Per Fogelstrom
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed under OpenBSD by
* Per Fogelstrom.
* 4. 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.
*
*/
#ifndef _SPARC64_LINK_H
#define _SPARC64_LINK_H
#include <elf_abi.h>
#include <machine/elf_abi.h>
/*
* Debug rendezvous struct. Pointer to this is set up in the
* target code pointed by the DT_MIPS_RLD_MAP tag. If it is
* defined.
*/
struct r_debug {
int r_version; /* Protocol version. */
struct link_map *r_map; /* Head of list of loaded objects. */
/* This is the address of a function internal to the run-time linker,
that will always be called when the linker begins to map in a
library or unmap it, and again when the mapping change is complete.
The debugger can set a breakpoint at this address if it wants to
notice shared object mapping changes. */
Elf32_Addr r_brk;
enum {
/* This state value describes the mapping change taking place when
the `r_brk' address is called. */
RT_CONSISTENT, /* Mapping change is complete. */
RT_ADD, /* Adding a new object. */
RT_DELETE, /* Removing an object mapping. */
} r_state;
Elf32_Addr r_ldbase; /* Base address the linker is loaded at. */
};
/* This symbol refers to the "dynamic structure" in the `.dynamic' section
of whatever module refers to `_DYNAMIC'. So, to find its own
`struct r_debug', a program could do:
for (dyn = _DYNAMIC; dyn->d_tag != DT_NULL)
if (dyn->d_tag == DT_MIPS_RLD_MAP) r_debug = (struct r_debug) dyn->d_un.d_ptr;
*/
extern Elf32_Dyn _DYNAMIC[];
/* Structure describing a loaded shared object. The `l_next' and `l_prev'
members form a chain of all the shared objects loaded at startup.
These data structures exist in space used by the run-time dynamic linker;
modifying them may have disastrous results. */
struct link_map
{
/* These first few members are part of the protocol with the debugger.
This is the same format used in SVR4. */
Elf32_Addr l_addr; /* Base address shared object is loaded at. */
Elf32_Addr l_offs; /* Offset */
char *l_name; /* Absolute file name object was found in. */
Elf32_Dyn *l_ld; /* Dynamic section of the shared object. */
struct link_map *l_next, *l_prev; /* Chain of loaded objects. */
/* All following members are internal to the dynamic linker.
They may change without notice. */
const char *l_libname; /* Name requested (before search). */
/* Indexed pointers to dynamic section. */
Elf32_Dyn *l_info[DT_NUM + DT_PROCNUM];
const Elf32_Phdr *l_phdr; /* Pointer to program header table in core. */
Elf32_Word l_phnum; /* Number of program header entries. */
Elf32_Addr l_entry; /* Entry point location. */
/* Symbol hash table. */
Elf32_Word l_nbuckets;
const Elf32_Word *l_buckets, *l_chain;
unsigned int l_opencount; /* Reference count for dlopen/dlclose. */
enum /* Where this object came from. */
{
lt_executable, /* The main executable program. */
lt_interpreter, /* The interpreter: the dynamic linker. */
lt_library, /* Library needed by main executable. */
lt_loaded, /* Extra run-time loaded shared object. */
} l_type:2;
unsigned int l_deps_loaded:1; /* Nonzero if DT_NEEDED items loaded. */
unsigned int l_relocated:1; /* Nonzero if object's relocations done. */
unsigned int l_init_called:1; /* Nonzero if DT_INIT function called. */
unsigned int l_init_running:1; /* Nonzero while DT_INIT function runs. */
};
/* SOD information used by ldconfig and ld.so */
/*
* Maximum number of recognized shared object version numbers.
*/
#define MAXDEWEY 8
/*
* Header of the hints file.
*/
struct hints_header {
long hh_magic;
#define HH_MAGIC 011421044151
long hh_version; /* Interface version number */
#define LD_HINTS_VERSION_1 1
#define LD_HINTS_VERSION_2 2
long hh_hashtab; /* Location of hash table */
long hh_nbucket; /* Number of buckets in hashtab */
long hh_strtab; /* Location of strings */
long hh_strtab_sz; /* Size of strings */
long hh_ehints; /* End of hints (max offset in file) */
long hh_dirlist; /* Colon-separated list of srch dirs */
};
#define HH_BADMAG(hdr) ((hdr).hh_magic != HH_MAGIC)
/*
* Hash table element in hints file.
*/
struct hints_bucket {
/* namex and pathx are indices into the string table */
int hi_namex; /* Library name */
int hi_pathx; /* Full path */
int hi_dewey[MAXDEWEY]; /* The versions */
int hi_ndewey; /* Number of version numbers */
#define hi_major hi_dewey[0]
#define hi_minor hi_dewey[1]
int hi_next; /* Next in this bucket */
};
#define _PATH_LD_HINTS "/var/run/ld.so.hints"
/*
* A `Shared Object Descriptor' describes a shared object that is needed
* to complete the link edit process of the object containing it.
* A list of such objects (chained through `sod_next') is pointed at
* by `sdt_sods' in the section_dispatch_table structure.
*/
struct sod { /* Shared Object Descriptor */
long sod_name; /* name (relative to load address) */
u_int sod_library : 1, /* Searched for by library rules */
sod_reserved : 31;
short sod_major; /* major version number */
short sod_minor; /* minor version number */
long sod_next; /* next sod */
};
#endif /* _SPARC64_LINK_H */
|
