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1/** @file\r
2Ported ELF include files from FreeBSD\r
3\r
4Copyright (c) 2009 - 2010, Apple Inc. All rights reserved.<BR>\r
2e351cbe 5SPDX-License-Identifier: BSD-2-Clause-Patent\r
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6\r
7\r
8**/\r
9/*-\r
10 * Copyright (c) 1996-1998 John D. Polstra.\r
11 * All rights reserved.\r
12 *\r
13 * Redistribution and use in source and binary forms, with or without\r
14 * modification, are permitted provided that the following conditions\r
15 * are met:\r
16 * 1. Redistributions of source code must retain the above copyright\r
17 * notice, this list of conditions and the following disclaimer.\r
18 * 2. Redistributions in binary form must reproduce the above copyright\r
19 * notice, this list of conditions and the following disclaimer in the\r
20 * documentation and/or other materials provided with the distribution.\r
21 *\r
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND\r
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE\r
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
32 * SUCH DAMAGE.\r
33 *\r
34 * $FreeBSD: src/sys/sys/elf32.h,v 1.8.14.2 2007/12/03 21:30:36 marius Exp $\r
35 */\r
36\r
37#ifndef _SYS_ELF32_H_\r
38#define _SYS_ELF32_H_ 1\r
39\r
40\r
41/*\r
42 * ELF definitions common to all 32-bit architectures.\r
43 */\r
44\r
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45typedef UINT32 Elf32_Addr;\r
46typedef UINT16 Elf32_Half;\r
47typedef UINT32 Elf32_Off;\r
48typedef INT32 Elf32_Sword;\r
49typedef UINT32 Elf32_Word;\r
50typedef UINT64 Elf32_Lword;\r
f51461c8 51\r
f7496d71 52typedef Elf32_Word Elf32_Hashelt;\r
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53\r
54/* Non-standard class-dependent datatype used for abstraction. */\r
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55typedef Elf32_Word Elf32_Size;\r
56typedef Elf32_Sword Elf32_Ssize;\r
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57\r
58/*\r
59 * ELF header.\r
60 */\r
61\r
62typedef struct {\r
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63 unsigned char e_ident[EI_NIDENT]; /* File identification. */\r
64 Elf32_Half e_type; /* File type. */\r
65 Elf32_Half e_machine; /* Machine architecture. */\r
66 Elf32_Word e_version; /* ELF format version. */\r
67 Elf32_Addr e_entry; /* Entry point. */\r
68 Elf32_Off e_phoff; /* Program header file offset. */\r
69 Elf32_Off e_shoff; /* Section header file offset. */\r
70 Elf32_Word e_flags; /* Architecture-specific flags. */\r
71 Elf32_Half e_ehsize; /* Size of ELF header in bytes. */\r
72 Elf32_Half e_phentsize; /* Size of program header entry. */\r
73 Elf32_Half e_phnum; /* Number of program header entries. */\r
74 Elf32_Half e_shentsize; /* Size of section header entry. */\r
75 Elf32_Half e_shnum; /* Number of section header entries. */\r
76 Elf32_Half e_shstrndx; /* Section name strings section. */\r
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77} Elf32_Ehdr;\r
78\r
79/*\r
80 * Section header.\r
81 */\r
82\r
83typedef struct {\r
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84 Elf32_Word sh_name; /* Section name (index into the\r
85 section header string table). */\r
86 Elf32_Word sh_type; /* Section type. */\r
87 Elf32_Word sh_flags; /* Section flags. */\r
88 Elf32_Addr sh_addr; /* Address in memory image. */\r
89 Elf32_Off sh_offset; /* Offset in file. */\r
90 Elf32_Word sh_size; /* Size in bytes. */\r
91 Elf32_Word sh_link; /* Index of a related section. */\r
92 Elf32_Word sh_info; /* Depends on section type. */\r
93 Elf32_Word sh_addralign; /* Alignment in bytes. */\r
94 Elf32_Word sh_entsize; /* Size of each entry in section. */\r
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95} Elf32_Shdr;\r
96\r
97/*\r
98 * Program header.\r
99 */\r
100\r
101typedef struct {\r
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102 Elf32_Word p_type; /* Entry type. */\r
103 Elf32_Off p_offset; /* File offset of contents. */\r
104 Elf32_Addr p_vaddr; /* Virtual address in memory image. */\r
105 Elf32_Addr p_paddr; /* Physical address (not used). */\r
106 Elf32_Word p_filesz; /* Size of contents in file. */\r
107 Elf32_Word p_memsz; /* Size of contents in memory. */\r
108 Elf32_Word p_flags; /* Access permission flags. */\r
109 Elf32_Word p_align; /* Alignment in memory and file. */\r
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110} Elf32_Phdr;\r
111\r
112/*\r
113 * Dynamic structure. The ".dynamic" section contains an array of them.\r
114 */\r
115\r
116typedef struct {\r
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117 Elf32_Sword d_tag; /* Entry type. */\r
118 union {\r
119 Elf32_Word d_val; /* Integer value. */\r
120 Elf32_Addr d_ptr; /* Address value. */\r
121 } d_un;\r
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122} Elf32_Dyn;\r
123\r
124/*\r
125 * Relocation entries.\r
126 */\r
127\r
128/* Relocations that don't need an addend field. */\r
129typedef struct {\r
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130 Elf32_Addr r_offset; /* Location to be relocated. */\r
131 Elf32_Word r_info; /* Relocation type and symbol index. */\r
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132} Elf32_Rel;\r
133\r
134/* Relocations that need an addend field. */\r
135typedef struct {\r
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136 Elf32_Addr r_offset; /* Location to be relocated. */\r
137 Elf32_Word r_info; /* Relocation type and symbol index. */\r
138 Elf32_Sword r_addend; /* Addend. */\r
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139} Elf32_Rela;\r
140\r
141/* Macros for accessing the fields of r_info. */\r
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142#define ELF32_R_SYM(info) ((info) >> 8)\r
143#define ELF32_R_TYPE(info) ((unsigned char)(info))\r
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144\r
145/* Macro for constructing r_info from field values. */\r
f7496d71 146#define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))\r
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147\r
148/*\r
f7496d71 149 * Note entry header\r
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150 */\r
151typedef Elf_Note Elf32_Nhdr;\r
152\r
153/*\r
f7496d71 154 * Move entry\r
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155 */\r
156typedef struct {\r
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157 Elf32_Lword m_value; /* symbol value */\r
158 Elf32_Word m_info; /* size + index */\r
159 Elf32_Word m_poffset; /* symbol offset */\r
160 Elf32_Half m_repeat; /* repeat count */\r
161 Elf32_Half m_stride; /* stride info */\r
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162} Elf32_Move;\r
163\r
164/*\r
f7496d71 165 * The macros compose and decompose values for Move.r_info\r
f51461c8 166 *\r
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167 * sym = ELF32_M_SYM(M.m_info)\r
168 * size = ELF32_M_SIZE(M.m_info)\r
169 * M.m_info = ELF32_M_INFO(sym, size)\r
f51461c8 170 */\r
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171#define ELF32_M_SYM(info) ((info)>>8)\r
172#define ELF32_M_SIZE(info) ((unsigned char)(info))\r
173#define ELF32_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size))\r
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174\r
175/*\r
f7496d71 176 * Hardware/Software capabilities entry\r
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177 */\r
178typedef struct {\r
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179 Elf32_Word c_tag; /* how to interpret value */\r
180 union {\r
181 Elf32_Word c_val;\r
182 Elf32_Addr c_ptr;\r
183 } c_un;\r
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184} Elf32_Cap;\r
185\r
186/*\r
187 * Symbol table entries.\r
188 */\r
189\r
190typedef struct {\r
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191 Elf32_Word st_name; /* String table index of name. */\r
192 Elf32_Addr st_value; /* Symbol value. */\r
193 Elf32_Word st_size; /* Size of associated object. */\r
194 unsigned char st_info; /* Type and binding information. */\r
195 unsigned char st_other; /* Reserved (not used). */\r
196 Elf32_Half st_shndx; /* Section index of symbol. */\r
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197} Elf32_Sym;\r
198\r
199/* Macros for accessing the fields of st_info. */\r
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200#define ELF32_ST_BIND(info) ((info) >> 4)\r
201#define ELF32_ST_TYPE(info) ((info) & 0xf)\r
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202\r
203/* Macro for constructing st_info from field values. */\r
f7496d71 204#define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))\r
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205\r
206/* Macro for accessing the fields of st_other. */\r
f7496d71 207#define ELF32_ST_VISIBILITY(oth) ((oth) & 0x3)\r
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208\r
209/* Structures used by Sun & GNU symbol versioning. */\r
210typedef struct\r
211{\r
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212 Elf32_Half vd_version;\r
213 Elf32_Half vd_flags;\r
214 Elf32_Half vd_ndx;\r
215 Elf32_Half vd_cnt;\r
216 Elf32_Word vd_hash;\r
217 Elf32_Word vd_aux;\r
218 Elf32_Word vd_next;\r
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219} Elf32_Verdef;\r
220\r
221typedef struct\r
222{\r
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223 Elf32_Word vda_name;\r
224 Elf32_Word vda_next;\r
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225} Elf32_Verdaux;\r
226\r
227typedef struct\r
228{\r
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229 Elf32_Half vn_version;\r
230 Elf32_Half vn_cnt;\r
231 Elf32_Word vn_file;\r
232 Elf32_Word vn_aux;\r
233 Elf32_Word vn_next;\r
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234} Elf32_Verneed;\r
235\r
236typedef struct\r
237{\r
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238 Elf32_Word vna_hash;\r
239 Elf32_Half vna_flags;\r
240 Elf32_Half vna_other;\r
241 Elf32_Word vna_name;\r
242 Elf32_Word vna_next;\r
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243} Elf32_Vernaux;\r
244\r
245typedef Elf32_Half Elf32_Versym;\r
246\r
247typedef struct {\r
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248 Elf32_Half si_boundto; /* direct bindings - symbol bound to */\r
249 Elf32_Half si_flags; /* per symbol flags */\r
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250} Elf32_Syminfo;\r
251\r
252#endif /* !_SYS_ELF32_H_ */\r