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30fdf114 LG |
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 1.8.14.2 2007/12/03 21:30:36 marius Exp $ | |
27 | */ | |
28 | ||
29 | #ifndef _SYS_ELF32_H_ | |
30 | #define _SYS_ELF32_H_ 1 | |
31 | ||
32 | ||
33 | /* | |
34 | * ELF definitions common to all 32-bit architectures. | |
35 | */ | |
36 | ||
37 | typedef UINT32 Elf32_Addr; | |
38 | typedef UINT16 Elf32_Half; | |
39 | typedef UINT32 Elf32_Off; | |
40 | typedef INT32 Elf32_Sword; | |
41 | typedef UINT32 Elf32_Word; | |
42 | typedef UINT64 Elf32_Lword; | |
43 | ||
44 | typedef Elf32_Word Elf32_Hashelt; | |
45 | ||
46 | /* Non-standard class-dependent datatype used for abstraction. */ | |
47 | typedef Elf32_Word Elf32_Size; | |
48 | typedef Elf32_Sword Elf32_Ssize; | |
49 | ||
50 | /* | |
51 | * ELF header. | |
52 | */ | |
53 | ||
54 | typedef struct { | |
55 | unsigned char e_ident[EI_NIDENT]; /* File identification. */ | |
56 | Elf32_Half e_type; /* File type. */ | |
57 | Elf32_Half e_machine; /* Machine architecture. */ | |
58 | Elf32_Word e_version; /* ELF format version. */ | |
59 | Elf32_Addr e_entry; /* Entry point. */ | |
60 | Elf32_Off e_phoff; /* Program header file offset. */ | |
61 | Elf32_Off e_shoff; /* Section header file offset. */ | |
62 | Elf32_Word e_flags; /* Architecture-specific flags. */ | |
63 | Elf32_Half e_ehsize; /* Size of ELF header in bytes. */ | |
64 | Elf32_Half e_phentsize; /* Size of program header entry. */ | |
65 | Elf32_Half e_phnum; /* Number of program header entries. */ | |
66 | Elf32_Half e_shentsize; /* Size of section header entry. */ | |
67 | Elf32_Half e_shnum; /* Number of section header entries. */ | |
68 | Elf32_Half e_shstrndx; /* Section name strings section. */ | |
69 | } Elf32_Ehdr; | |
70 | ||
71 | /* | |
72 | * Section header. | |
73 | */ | |
74 | ||
75 | typedef struct { | |
76 | Elf32_Word sh_name; /* Section name (index into the | |
77 | section header string table). */ | |
78 | Elf32_Word sh_type; /* Section type. */ | |
79 | Elf32_Word sh_flags; /* Section flags. */ | |
80 | Elf32_Addr sh_addr; /* Address in memory image. */ | |
81 | Elf32_Off sh_offset; /* Offset in file. */ | |
82 | Elf32_Word sh_size; /* Size in bytes. */ | |
83 | Elf32_Word sh_link; /* Index of a related section. */ | |
84 | Elf32_Word sh_info; /* Depends on section type. */ | |
85 | Elf32_Word sh_addralign; /* Alignment in bytes. */ | |
86 | Elf32_Word sh_entsize; /* Size of each entry in section. */ | |
87 | } Elf32_Shdr; | |
88 | ||
89 | /* | |
90 | * Program header. | |
91 | */ | |
92 | ||
93 | typedef struct { | |
94 | Elf32_Word p_type; /* Entry type. */ | |
95 | Elf32_Off p_offset; /* File offset of contents. */ | |
96 | Elf32_Addr p_vaddr; /* Virtual address in memory image. */ | |
97 | Elf32_Addr p_paddr; /* Physical address (not used). */ | |
98 | Elf32_Word p_filesz; /* Size of contents in file. */ | |
99 | Elf32_Word p_memsz; /* Size of contents in memory. */ | |
100 | Elf32_Word p_flags; /* Access permission flags. */ | |
101 | Elf32_Word p_align; /* Alignment in memory and file. */ | |
102 | } Elf32_Phdr; | |
103 | ||
104 | /* | |
105 | * Dynamic structure. The ".dynamic" section contains an array of them. | |
106 | */ | |
107 | ||
108 | typedef struct { | |
109 | Elf32_Sword d_tag; /* Entry type. */ | |
110 | union { | |
111 | Elf32_Word d_val; /* Integer value. */ | |
112 | Elf32_Addr d_ptr; /* Address value. */ | |
113 | } d_un; | |
114 | } Elf32_Dyn; | |
115 | ||
116 | /* | |
117 | * Relocation entries. | |
118 | */ | |
119 | ||
120 | /* Relocations that don't need an addend field. */ | |
121 | typedef struct { | |
122 | Elf32_Addr r_offset; /* Location to be relocated. */ | |
123 | Elf32_Word r_info; /* Relocation type and symbol index. */ | |
124 | } Elf32_Rel; | |
125 | ||
126 | /* Relocations that need an addend field. */ | |
127 | typedef struct { | |
128 | Elf32_Addr r_offset; /* Location to be relocated. */ | |
129 | Elf32_Word r_info; /* Relocation type and symbol index. */ | |
130 | Elf32_Sword r_addend; /* Addend. */ | |
131 | } Elf32_Rela; | |
132 | ||
133 | /* Macros for accessing the fields of r_info. */ | |
134 | #define ELF32_R_SYM(info) ((info) >> 8) | |
135 | #define ELF32_R_TYPE(info) ((unsigned char)(info)) | |
136 | ||
137 | /* Macro for constructing r_info from field values. */ | |
138 | #define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type)) | |
139 | ||
140 | /* | |
141 | * Note entry header | |
142 | */ | |
143 | typedef Elf_Note Elf32_Nhdr; | |
144 | ||
145 | /* | |
146 | * Move entry | |
147 | */ | |
148 | typedef struct { | |
149 | Elf32_Lword m_value; /* symbol value */ | |
150 | Elf32_Word m_info; /* size + index */ | |
151 | Elf32_Word m_poffset; /* symbol offset */ | |
152 | Elf32_Half m_repeat; /* repeat count */ | |
153 | Elf32_Half m_stride; /* stride info */ | |
154 | } Elf32_Move; | |
155 | ||
156 | /* | |
157 | * The macros compose and decompose values for Move.r_info | |
158 | * | |
159 | * sym = ELF32_M_SYM(M.m_info) | |
160 | * size = ELF32_M_SIZE(M.m_info) | |
161 | * M.m_info = ELF32_M_INFO(sym, size) | |
162 | */ | |
163 | #define ELF32_M_SYM(info) ((info)>>8) | |
164 | #define ELF32_M_SIZE(info) ((unsigned char)(info)) | |
165 | #define ELF32_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size)) | |
166 | ||
167 | /* | |
168 | * Hardware/Software capabilities entry | |
169 | */ | |
170 | typedef struct { | |
171 | Elf32_Word c_tag; /* how to interpret value */ | |
172 | union { | |
173 | Elf32_Word c_val; | |
174 | Elf32_Addr c_ptr; | |
175 | } c_un; | |
176 | } Elf32_Cap; | |
177 | ||
178 | /* | |
179 | * Symbol table entries. | |
180 | */ | |
181 | ||
182 | typedef struct { | |
183 | Elf32_Word st_name; /* String table index of name. */ | |
184 | Elf32_Addr st_value; /* Symbol value. */ | |
185 | Elf32_Word st_size; /* Size of associated object. */ | |
186 | unsigned char st_info; /* Type and binding information. */ | |
187 | unsigned char st_other; /* Reserved (not used). */ | |
188 | Elf32_Half st_shndx; /* Section index of symbol. */ | |
189 | } Elf32_Sym; | |
190 | ||
191 | /* Macros for accessing the fields of st_info. */ | |
192 | #define ELF32_ST_BIND(info) ((info) >> 4) | |
193 | #define ELF32_ST_TYPE(info) ((info) & 0xf) | |
194 | ||
195 | /* Macro for constructing st_info from field values. */ | |
196 | #define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) | |
197 | ||
198 | /* Macro for accessing the fields of st_other. */ | |
199 | #define ELF32_ST_VISIBILITY(oth) ((oth) & 0x3) | |
200 | ||
201 | /* Structures used by Sun & GNU symbol versioning. */ | |
202 | typedef struct | |
203 | { | |
204 | Elf32_Half vd_version; | |
205 | Elf32_Half vd_flags; | |
206 | Elf32_Half vd_ndx; | |
207 | Elf32_Half vd_cnt; | |
208 | Elf32_Word vd_hash; | |
209 | Elf32_Word vd_aux; | |
210 | Elf32_Word vd_next; | |
211 | } Elf32_Verdef; | |
212 | ||
213 | typedef struct | |
214 | { | |
215 | Elf32_Word vda_name; | |
216 | Elf32_Word vda_next; | |
217 | } Elf32_Verdaux; | |
218 | ||
219 | typedef struct | |
220 | { | |
221 | Elf32_Half vn_version; | |
222 | Elf32_Half vn_cnt; | |
223 | Elf32_Word vn_file; | |
224 | Elf32_Word vn_aux; | |
225 | Elf32_Word vn_next; | |
226 | } Elf32_Verneed; | |
227 | ||
228 | typedef struct | |
229 | { | |
230 | Elf32_Word vna_hash; | |
231 | Elf32_Half vna_flags; | |
232 | Elf32_Half vna_other; | |
233 | Elf32_Word vna_name; | |
234 | Elf32_Word vna_next; | |
235 | } Elf32_Vernaux; | |
236 | ||
237 | typedef Elf32_Half Elf32_Versym; | |
238 | ||
239 | typedef struct { | |
240 | Elf32_Half si_boundto; /* direct bindings - symbol bound to */ | |
241 | Elf32_Half si_flags; /* per symbol flags */ | |
242 | } Elf32_Syminfo; | |
243 | ||
244 | #endif /* !_SYS_ELF32_H_ */ |