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_ELF64_H_
30#define _SYS_ELF64_H_ 1
31
32#include <sys/elf_common.h>
33
34/*
35 * ELF definitions common to all 64-bit architectures.
36 */
37
38typedef uint64_t Elf64_Addr;
39typedef uint16_t Elf64_Half;
40typedef uint64_t Elf64_Off;
41typedef int32_t Elf64_Sword;
42typedef int64_t Elf64_Sxword;
43typedef uint32_t Elf64_Word;
44typedef uint64_t Elf64_Lword;
45typedef uint64_t Elf64_Xword;
46
47/*
48 * Types of dynamic symbol hash table bucket and chain elements.
49 *
50 * This is inconsistent among 64 bit architectures, so a machine dependent
51 * typedef is required.
52 */
53
54typedef Elf64_Word Elf64_Hashelt;
55
56/* Non-standard class-dependent datatype used for abstraction. */
57typedef Elf64_Xword Elf64_Size;
58typedef Elf64_Sxword Elf64_Ssize;
59
60/*
61 * ELF header.
62 */
63
64typedef struct {
65 unsigned char e_ident[EI_NIDENT]; /* File identification. */
66 Elf64_Half e_type; /* File type. */
67 Elf64_Half e_machine; /* Machine architecture. */
68 Elf64_Word e_version; /* ELF format version. */
69 Elf64_Addr e_entry; /* Entry point. */
70 Elf64_Off e_phoff; /* Program header file offset. */
71 Elf64_Off e_shoff; /* Section header file offset. */
72 Elf64_Word e_flags; /* Architecture-specific flags. */
73 Elf64_Half e_ehsize; /* Size of ELF header in bytes. */
74 Elf64_Half e_phentsize; /* Size of program header entry. */
75 Elf64_Half e_phnum; /* Number of program header entries. */
76 Elf64_Half e_shentsize; /* Size of section header entry. */
77 Elf64_Half e_shnum; /* Number of section header entries. */
78 Elf64_Half e_shstrndx; /* Section name strings section. */
79} Elf64_Ehdr;
80
81/*
82 * Shared object information, found in SHT_MIPS_LIBLIST.
83 */
84
85typedef struct {
86 Elf64_Word l_name; /* The name of a shared object. */
87 Elf64_Word l_time_stamp; /* 64-bit timestamp. */
88 Elf64_Word l_checksum; /* Checksum of visible symbols, sizes. */
89 Elf64_Word l_version; /* Interface version string index. */
90 Elf64_Word l_flags; /* Flags (LL_*). */
91} Elf64_Lib;
92
93/*
94 * Section header.
95 */
96
97typedef struct {
98 Elf64_Word sh_name; /* Section name (index into the
99 section header string table). */
100 Elf64_Word sh_type; /* Section type. */
101 Elf64_Xword sh_flags; /* Section flags. */
102 Elf64_Addr sh_addr; /* Address in memory image. */
103 Elf64_Off sh_offset; /* Offset in file. */
104 Elf64_Xword sh_size; /* Size in bytes. */
105 Elf64_Word sh_link; /* Index of a related section. */
106 Elf64_Word sh_info; /* Depends on section type. */
107 Elf64_Xword sh_addralign; /* Alignment in bytes. */
108 Elf64_Xword sh_entsize; /* Size of each entry in section. */
109} Elf64_Shdr;
110
111/*
112 * Program header.
113 */
114
115typedef struct {
116 Elf64_Word p_type; /* Entry type. */
117 Elf64_Word p_flags; /* Access permission flags. */
118 Elf64_Off p_offset; /* File offset of contents. */
119 Elf64_Addr p_vaddr; /* Virtual address in memory image. */
120 Elf64_Addr p_paddr; /* Physical address (not used). */
121 Elf64_Xword p_filesz; /* Size of contents in file. */
122 Elf64_Xword p_memsz; /* Size of contents in memory. */
123 Elf64_Xword p_align; /* Alignment in memory and file. */
124} Elf64_Phdr;
125
126/*
127 * Dynamic structure. The ".dynamic" section contains an array of them.
128 */
129
130typedef struct {
131 Elf64_Sxword d_tag; /* Entry type. */
132 union {
133 Elf64_Xword d_val; /* Integer value. */
134 Elf64_Addr d_ptr; /* Address value. */
135 } d_un;
136} Elf64_Dyn;
137
138/*
139 * Relocation entries.
140 */
141
142/* Relocations that don't need an addend field. */
143typedef struct {
144 Elf64_Addr r_offset; /* Location to be relocated. */
145 Elf64_Xword r_info; /* Relocation type and symbol index. */
146} Elf64_Rel;
147
148/* Relocations that need an addend field. */
149typedef struct {
150 Elf64_Addr r_offset; /* Location to be relocated. */
151 Elf64_Xword r_info; /* Relocation type and symbol index. */
152 Elf64_Sxword r_addend; /* Addend. */
153} Elf64_Rela;
154
155/* Macros for accessing the fields of r_info. */
156#define ELF64_R_SYM(info) ((info) >> 32)
157#define ELF64_R_TYPE(info) ((info) & 0xffffffffL)
158
159/* Macro for constructing r_info from field values. */
160#define ELF64_R_INFO(sym, type) (((sym) << 32) + ((type) & 0xffffffffL))
161
162#define ELF64_R_TYPE_DATA(info) (((Elf64_Xword)(info)<<32)>>40)
163#define ELF64_R_TYPE_ID(info) (((Elf64_Xword)(info)<<56)>>56)
164#define ELF64_R_TYPE_INFO(data, type) \
165 (((Elf64_Xword)(data)<<8)+(Elf64_Xword)(type))
166
167typedef Elf64_Xword Elf64_Relr;
168
169/*
170 * Note entry header
171 */
172typedef Elf_Note Elf64_Nhdr;
173
174/*
175 * Move entry
176 */
177typedef struct {
178 Elf64_Lword m_value; /* symbol value */
179 Elf64_Xword m_info; /* size + index */
180 Elf64_Xword m_poffset; /* symbol offset */
181 Elf64_Half m_repeat; /* repeat count */
182 Elf64_Half m_stride; /* stride info */
183} Elf64_Move;
184
185#define ELF64_M_SYM(info) ((info)>>8)
186#define ELF64_M_SIZE(info) ((unsigned char)(info))
187#define ELF64_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size))
188
189/*
190 * Hardware/Software capabilities entry
191 */
192typedef struct {
193 Elf64_Xword c_tag; /* how to interpret value */
194 union {
195 Elf64_Xword c_val;
196 Elf64_Addr c_ptr;
197 } c_un;
198} Elf64_Cap;
199
200/*
201 * Symbol table entries.
202 */
203
204typedef struct {
205 Elf64_Word st_name; /* String table index of name. */
206 unsigned char st_info; /* Type and binding information. */
207 unsigned char st_other; /* Reserved (not used). */
208 Elf64_Half st_shndx; /* Section index of symbol. */
209 Elf64_Addr st_value; /* Symbol value. */
210 Elf64_Xword st_size; /* Size of associated object. */
211} Elf64_Sym;
212
213/* Macros for accessing the fields of st_info. */
214#define ELF64_ST_BIND(info) ((info) >> 4)
215#define ELF64_ST_TYPE(info) ((info) & 0xf)
216
217/* Macro for constructing st_info from field values. */
218#define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
219
220/* Macro for accessing the fields of st_other. */
221#define ELF64_ST_VISIBILITY(oth) ((oth) & 0x3)
222
223/* Structures used by Sun & GNU-style symbol versioning. */
224typedef struct {
225 Elf64_Half vd_version;
226 Elf64_Half vd_flags;
227 Elf64_Half vd_ndx;
228 Elf64_Half vd_cnt;
229 Elf64_Word vd_hash;
230 Elf64_Word vd_aux;
231 Elf64_Word vd_next;
232} Elf64_Verdef;
233
234typedef struct {
235 Elf64_Word vda_name;
236 Elf64_Word vda_next;
237} Elf64_Verdaux;
238
239typedef struct {
240 Elf64_Half vn_version;
241 Elf64_Half vn_cnt;
242 Elf64_Word vn_file;
243 Elf64_Word vn_aux;
244 Elf64_Word vn_next;
245} Elf64_Verneed;
246
247typedef struct {
248 Elf64_Word vna_hash;
249 Elf64_Half vna_flags;
250 Elf64_Half vna_other;
251 Elf64_Word vna_name;
252 Elf64_Word vna_next;
253} Elf64_Vernaux;
254
255typedef Elf64_Half Elf64_Versym;
256
257typedef struct {
258 Elf64_Half si_boundto; /* direct bindings - symbol bound to */
259 Elf64_Half si_flags; /* per symbol flags */
260} Elf64_Syminfo;
261
262typedef struct {
263 Elf64_Word ch_type;
264 Elf64_Word ch_reserved;
265 Elf64_Xword ch_size;
266 Elf64_Xword ch_addralign;
267} Elf64_Chdr;
268
269#endif /* !_SYS_ELF64_H_ */