1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1996-1998 John D. Polstra.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
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 * Shared object information, found in SHT_MIPS_LIBLIST.
74 */
75
76typedef struct {
77 Elf32_Word l_name; /* The name of a shared object. */
78 Elf32_Word l_time_stamp; /* 32-bit timestamp. */
79 Elf32_Word l_checksum; /* Checksum of visible symbols, sizes. */
80 Elf32_Word l_version; /* Interface version string index. */
81 Elf32_Word l_flags; /* Flags (LL_*). */
82} Elf32_Lib;
83
84/*
85 * Section header.
86 */
87
88typedef struct {
89 Elf32_Word sh_name; /* Section name (index into the
90 section header string table). */
91 Elf32_Word sh_type; /* Section type. */
92 Elf32_Word sh_flags; /* Section flags. */
93 Elf32_Addr sh_addr; /* Address in memory image. */
94 Elf32_Off sh_offset; /* Offset in file. */
95 Elf32_Word sh_size; /* Size in bytes. */
96 Elf32_Word sh_link; /* Index of a related section. */
97 Elf32_Word sh_info; /* Depends on section type. */
98 Elf32_Word sh_addralign; /* Alignment in bytes. */
99 Elf32_Word sh_entsize; /* Size of each entry in section. */
100} Elf32_Shdr;
101
102/*
103 * Program header.
104 */
105
106typedef struct {
107 Elf32_Word p_type; /* Entry type. */
108 Elf32_Off p_offset; /* File offset of contents. */
109 Elf32_Addr p_vaddr; /* Virtual address in memory image. */
110 Elf32_Addr p_paddr; /* Physical address (not used). */
111 Elf32_Word p_filesz; /* Size of contents in file. */
112 Elf32_Word p_memsz; /* Size of contents in memory. */
113 Elf32_Word p_flags; /* Access permission flags. */
114 Elf32_Word p_align; /* Alignment in memory and file. */
115} Elf32_Phdr;
116
117/*
118 * Dynamic structure. The ".dynamic" section contains an array of them.
119 */
120
121typedef struct {
122 Elf32_Sword d_tag; /* Entry type. */
123 union {
124 Elf32_Word d_val; /* Integer value. */
125 Elf32_Addr d_ptr; /* Address value. */
126 } d_un;
127} Elf32_Dyn;
128
129/*
130 * Relocation entries.
131 */
132
133/* Relocations that don't need an addend field. */
134typedef struct {
135 Elf32_Addr r_offset; /* Location to be relocated. */
136 Elf32_Word r_info; /* Relocation type and symbol index. */
137} Elf32_Rel;
138
139/* Relocations that need an addend field. */
140typedef struct {
141 Elf32_Addr r_offset; /* Location to be relocated. */
142 Elf32_Word r_info; /* Relocation type and symbol index. */
143 Elf32_Sword r_addend; /* Addend. */
144} Elf32_Rela;
145
146/* Macros for accessing the fields of r_info. */
147#define ELF32_R_SYM(info) ((info) >> 8)
148#define ELF32_R_TYPE(info) ((unsigned char)(info))
149
150/* Macro for constructing r_info from field values. */
151#define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))
152
153typedef Elf32_Word Elf32_Relr;
154
155/*
156 * Note entry header
157 */
158typedef Elf_Note Elf32_Nhdr;
159
160/*
161 * Move entry
162 */
163typedef struct {
164 Elf32_Lword m_value; /* symbol value */
165 Elf32_Word m_info; /* size + index */
166 Elf32_Word m_poffset; /* symbol offset */
167 Elf32_Half m_repeat; /* repeat count */
168 Elf32_Half m_stride; /* stride info */
169} Elf32_Move;
170
171/*
172 * The macros compose and decompose values for Move.r_info
173 *
174 * sym = ELF32_M_SYM(M.m_info)
175 * size = ELF32_M_SIZE(M.m_info)
176 * M.m_info = ELF32_M_INFO(sym, size)
177 */
178#define ELF32_M_SYM(info) ((info)>>8)
179#define ELF32_M_SIZE(info) ((unsigned char)(info))
180#define ELF32_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size))
181
182/*
183 * Hardware/Software capabilities entry
184 */
185typedef struct {
186 Elf32_Word c_tag; /* how to interpret value */
187 union {
188 Elf32_Word c_val;
189 Elf32_Addr c_ptr;
190 } c_un;
191} Elf32_Cap;
192
193/*
194 * Symbol table entries.
195 */
196
197typedef struct {
198 Elf32_Word st_name; /* String table index of name. */
199 Elf32_Addr st_value; /* Symbol value. */
200 Elf32_Word st_size; /* Size of associated object. */
201 unsigned char st_info; /* Type and binding information. */
202 unsigned char st_other; /* Reserved (not used). */
203 Elf32_Half st_shndx; /* Section index of symbol. */
204} Elf32_Sym;
205
206/* Macros for accessing the fields of st_info. */
207#define ELF32_ST_BIND(info) ((info) >> 4)
208#define ELF32_ST_TYPE(info) ((info) & 0xf)
209
210/* Macro for constructing st_info from field values. */
211#define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
212
213/* Macro for accessing the fields of st_other. */
214#define ELF32_ST_VISIBILITY(oth) ((oth) & 0x3)
215
216/* Structures used by Sun & GNU symbol versioning. */
217typedef struct
218{
219 Elf32_Half vd_version;
220 Elf32_Half vd_flags;
221 Elf32_Half vd_ndx;
222 Elf32_Half vd_cnt;
223 Elf32_Word vd_hash;
224 Elf32_Word vd_aux;
225 Elf32_Word vd_next;
226} Elf32_Verdef;
227
228typedef struct
229{
230 Elf32_Word vda_name;
231 Elf32_Word vda_next;
232} Elf32_Verdaux;
233
234typedef struct
235{
236 Elf32_Half vn_version;
237 Elf32_Half vn_cnt;
238 Elf32_Word vn_file;
239 Elf32_Word vn_aux;
240 Elf32_Word vn_next;
241} Elf32_Verneed;
242
243typedef struct
244{
245 Elf32_Word vna_hash;
246 Elf32_Half vna_flags;
247 Elf32_Half vna_other;
248 Elf32_Word vna_name;
249 Elf32_Word vna_next;
250} Elf32_Vernaux;
251
252typedef Elf32_Half Elf32_Versym;
253
254typedef struct {
255 Elf32_Half si_boundto; /* direct bindings - symbol bound to */
256 Elf32_Half si_flags; /* per symbol flags */
257} Elf32_Syminfo;
258
259typedef struct {
260 Elf32_Word ch_type;
261 Elf32_Word ch_size;
262 Elf32_Word ch_addralign;
263} Elf32_Chdr;
264
265#endif /* !_SYS_ELF32_H_ */