source: trunk/emx/include/sys/elf32.h

Last change on this file was 3659, checked in by bird, 15 years ago

emx: Added elf headers and fixed some properties.
  • Property svn:eol-style set to native
File size: 7.0 KB
RevLine 
[3659]1/*-
2 * Copyright (c) 1996-1998 John D. Polstra.
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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/sys/elf32.h,v 1.13 2006/10/17 05:43:30 jkoshy Exp $
27 */
28
29#ifndef _SYS_ELF32_H_
30#define _SYS_ELF32_H_ 1
31
32#include <sys/elf_common.h>
33
34/*
35 * ELF definitions common to all 32-bit architectures.
36 */
37
38typedef uint32_t Elf32_Addr;
39typedef uint16_t Elf32_Half;
40typedef uint32_t Elf32_Off;
41typedef int32_t Elf32_Sword;
42typedef uint32_t Elf32_Word;
43typedef uint64_t Elf32_Lword;
44
45typedef Elf32_Word Elf32_Hashelt;
46
47/* Non-standard class-dependent datatype used for abstraction. */
48typedef Elf32_Word Elf32_Size;
49typedef Elf32_Sword Elf32_Ssize;
50
51/*
52 * ELF header.
53 */
54
55typedef struct {
56 unsigned char e_ident[EI_NIDENT]; /* File identification. */
57 Elf32_Half e_type; /* File type. */
58 Elf32_Half e_machine; /* Machine architecture. */
59 Elf32_Word e_version; /* ELF format version. */
60 Elf32_Addr e_entry; /* Entry point. */
61 Elf32_Off e_phoff; /* Program header file offset. */
62 Elf32_Off e_shoff; /* Section header file offset. */
63 Elf32_Word e_flags; /* Architecture-specific flags. */
64 Elf32_Half e_ehsize; /* Size of ELF header in bytes. */
65 Elf32_Half e_phentsize; /* Size of program header entry. */
66 Elf32_Half e_phnum; /* Number of program header entries. */
67 Elf32_Half e_shentsize; /* Size of section header entry. */
68 Elf32_Half e_shnum; /* Number of section header entries. */
69 Elf32_Half e_shstrndx; /* Section name strings section. */
70} Elf32_Ehdr;
71
72/*
73 * Section header.
74 */
75
76typedef struct {
77 Elf32_Word sh_name; /* Section name (index into the
78 section header string table). */
79 Elf32_Word sh_type; /* Section type. */
80 Elf32_Word sh_flags; /* Section flags. */
81 Elf32_Addr sh_addr; /* Address in memory image. */
82 Elf32_Off sh_offset; /* Offset in file. */
83 Elf32_Word sh_size; /* Size in bytes. */
84 Elf32_Word sh_link; /* Index of a related section. */
85 Elf32_Word sh_info; /* Depends on section type. */
86 Elf32_Word sh_addralign; /* Alignment in bytes. */
87 Elf32_Word sh_entsize; /* Size of each entry in section. */
88} Elf32_Shdr;
89
90/*
91 * Program header.
92 */
93
94typedef struct {
95 Elf32_Word p_type; /* Entry type. */
96 Elf32_Off p_offset; /* File offset of contents. */
97 Elf32_Addr p_vaddr; /* Virtual address in memory image. */
98 Elf32_Addr p_paddr; /* Physical address (not used). */
99 Elf32_Word p_filesz; /* Size of contents in file. */
100 Elf32_Word p_memsz; /* Size of contents in memory. */
101 Elf32_Word p_flags; /* Access permission flags. */
102 Elf32_Word p_align; /* Alignment in memory and file. */
103} Elf32_Phdr;
104
105/*
106 * Dynamic structure. The ".dynamic" section contains an array of them.
107 */
108
109typedef struct {
110 Elf32_Sword d_tag; /* Entry type. */
111 union {
112 Elf32_Word d_val; /* Integer value. */
113 Elf32_Addr d_ptr; /* Address value. */
114 } d_un;
115} Elf32_Dyn;
116
117/*
118 * Relocation entries.
119 */
120
121/* Relocations that don't need an addend field. */
122typedef struct {
123 Elf32_Addr r_offset; /* Location to be relocated. */
124 Elf32_Word r_info; /* Relocation type and symbol index. */
125} Elf32_Rel;
126
127/* Relocations that need an addend field. */
128typedef struct {
129 Elf32_Addr r_offset; /* Location to be relocated. */
130 Elf32_Word r_info; /* Relocation type and symbol index. */
131 Elf32_Sword r_addend; /* Addend. */
132} Elf32_Rela;
133
134/* Macros for accessing the fields of r_info. */
135#define ELF32_R_SYM(info) ((info) >> 8)
136#define ELF32_R_TYPE(info) ((unsigned char)(info))
137
138/* Macro for constructing r_info from field values. */
139#define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))
140
141/*
142 * Note entry header
143 */
144typedef Elf_Note Elf32_Nhdr;
145
146/*
147 * Move entry
148 */
149typedef struct {
150 Elf32_Lword m_value; /* symbol value */
151 Elf32_Word m_info; /* size + index */
152 Elf32_Word m_poffset; /* symbol offset */
153 Elf32_Half m_repeat; /* repeat count */
154 Elf32_Half m_stride; /* stride info */
155} Elf32_Move;
156
157/*
158 * The macros compose and decompose values for Move.r_info
159 *
160 * sym = ELF32_M_SYM(M.m_info)
161 * size = ELF32_M_SIZE(M.m_info)
162 * M.m_info = ELF32_M_INFO(sym, size)
163 */
164#define ELF32_M_SYM(info) ((info)>>8)
165#define ELF32_M_SIZE(info) ((unsigned char)(info))
166#define ELF32_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size))
167
168/*
169 * Hardware/Software capabilities entry
170 */
171typedef struct {
172 Elf32_Word c_tag; /* how to interpret value */
173 union {
174 Elf32_Word c_val;
175 Elf32_Addr c_ptr;
176 } c_un;
177} Elf32_Cap;
178
179/*
180 * Symbol table entries.
181 */
182
183typedef struct {
184 Elf32_Word st_name; /* String table index of name. */
185 Elf32_Addr st_value; /* Symbol value. */
186 Elf32_Word st_size; /* Size of associated object. */
187 unsigned char st_info; /* Type and binding information. */
188 unsigned char st_other; /* Reserved (not used). */
189 Elf32_Half st_shndx; /* Section index of symbol. */
190} Elf32_Sym;
191
192/* Macros for accessing the fields of st_info. */
193#define ELF32_ST_BIND(info) ((info) >> 4)
194#define ELF32_ST_TYPE(info) ((info) & 0xf)
195
196/* Macro for constructing st_info from field values. */
197#define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
198
199/* Macro for accessing the fields of st_other. */
200#define ELF32_ST_VISIBILITY(oth) ((oth) & 0x3)
201
202/* Structures used by Sun & GNU symbol versioning. */
203typedef struct
204{
205 Elf32_Half vd_version;
206 Elf32_Half vd_flags;
207 Elf32_Half vd_ndx;
208 Elf32_Half vd_cnt;
209 Elf32_Word vd_hash;
210 Elf32_Word vd_aux;
211 Elf32_Word vd_next;
212} Elf32_Verdef;
213
214typedef struct
215{
216 Elf32_Word vda_name;
217 Elf32_Word vda_next;
218} Elf32_Verdaux;
219
220typedef struct
221{
222 Elf32_Half vn_version;
223 Elf32_Half vn_cnt;
224 Elf32_Word vn_file;
225 Elf32_Word vn_aux;
226 Elf32_Word vn_next;
227} Elf32_Verneed;
228
229typedef struct
230{
231 Elf32_Word vna_hash;
232 Elf32_Half vna_flags;
233 Elf32_Half vna_other;
234 Elf32_Word vna_name;
235 Elf32_Word vna_next;
236} Elf32_Vernaux;
237
238typedef Elf32_Half Elf32_Versym;
239
240typedef struct {
241 Elf32_Half si_boundto; /* direct bindings - symbol bound to */
242 Elf32_Half si_flags; /* per symbol flags */
243} Elf32_Syminfo;
244
245#endif /* !_SYS_ELF32_H_ */
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