2 * Copyright (c) 1996-1998 John D. Polstra.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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
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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
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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
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23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/sys/elf32.h,v 1.7 1999/08/28 00:51:41 peter Exp $
27 * $DragonFly: src/sys/sys/elf32.h,v 1.5 2006/10/23 21:50:33 dillon Exp $
34 #include <sys/types.h>
36 #ifndef _SYS_ELF_COMMON_H_
37 #include <sys/elf_common.h>
41 * ELF definitions common to all 32-bit architectures.
44 typedef u_int32_t Elf32_Addr;
45 typedef u_int16_t Elf32_Half;
46 typedef u_int32_t Elf32_Off;
47 typedef int32_t Elf32_Sword;
48 typedef u_int32_t Elf32_Word;
49 typedef u_int32_t Elf32_Size;
50 typedef Elf32_Off Elf32_Hashelt;
57 unsigned char e_ident[EI_NIDENT]; /* File identification. */
58 Elf32_Half e_type; /* File type. */
59 Elf32_Half e_machine; /* Machine architecture. */
60 Elf32_Word e_version; /* ELF format version. */
61 Elf32_Addr e_entry; /* Entry point. */
62 Elf32_Off e_phoff; /* Program header file offset. */
63 Elf32_Off e_shoff; /* Section header file offset. */
64 Elf32_Word e_flags; /* Architecture-specific flags. */
65 Elf32_Half e_ehsize; /* Size of ELF header in bytes. */
66 Elf32_Half e_phentsize; /* Size of program header entry. */
67 Elf32_Half e_phnum; /* Number of program header entries. */
68 Elf32_Half e_shentsize; /* Size of section header entry. */
69 Elf32_Half e_shnum; /* Number of section header entries. */
70 Elf32_Half e_shstrndx; /* Section name strings section. */
78 Elf32_Word sh_name; /* Section name (index into the
79 section header string table). */
80 Elf32_Word sh_type; /* Section type. */
81 Elf32_Word sh_flags; /* Section flags. */
82 Elf32_Addr sh_addr; /* Address in memory image. */
83 Elf32_Off sh_offset; /* Offset in file. */
84 Elf32_Size sh_size; /* Size in bytes. */
85 Elf32_Word sh_link; /* Index of a related section. */
86 Elf32_Word sh_info; /* Depends on section type. */
87 Elf32_Size sh_addralign; /* Alignment in bytes. */
88 Elf32_Size sh_entsize; /* Size of each entry in section. */
96 Elf32_Word p_type; /* Entry type. */
97 Elf32_Off p_offset; /* File offset of contents. */
98 Elf32_Addr p_vaddr; /* Virtual address in memory image. */
99 Elf32_Addr p_paddr; /* Physical address (not used). */
100 Elf32_Size p_filesz; /* Size of contents in file. */
101 Elf32_Size p_memsz; /* Size of contents in memory. */
102 Elf32_Word p_flags; /* Access permission flags. */
103 Elf32_Size p_align; /* Alignment in memory and file. */
107 * Dynamic structure. The ".dynamic" section contains an array of them.
111 Elf32_Sword d_tag; /* Entry type. */
113 Elf32_Size d_val; /* Integer value. */
114 Elf32_Addr d_ptr; /* Address value. */
119 * Relocation entries.
122 /* Relocations that don't need an addend field. */
124 Elf32_Addr r_offset; /* Location to be relocated. */
125 Elf32_Word r_info; /* Relocation type and symbol index. */
128 /* Relocations that need an addend field. */
130 Elf32_Addr r_offset; /* Location to be relocated. */
131 Elf32_Word r_info; /* Relocation type and symbol index. */
132 Elf32_Sword r_addend; /* Addend. */
135 /* Macros for accessing the fields of r_info. */
136 #define ELF32_R_SYM(info) ((info) >> 8)
137 #define ELF32_R_TYPE(info) ((unsigned char)(info))
139 /* Macro for constructing r_info from field values. */
140 #define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))
143 * Symbol table entries.
147 Elf32_Word st_name; /* String table index of name. */
148 Elf32_Addr st_value; /* Symbol value. */
149 Elf32_Size st_size; /* Size of associated object. */
150 unsigned char st_info; /* Type and binding information. */
151 unsigned char st_other; /* Reserved (not used). */
152 Elf32_Half st_shndx; /* Section index of symbol. */
155 /* Macros for accessing the fields of st_info. */
156 #define ELF32_ST_BIND(info) ((info) >> 4)
157 #define ELF32_ST_TYPE(info) ((info) & 0xf)
159 /* Macro for constructing st_info from field values. */
160 #define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
162 #endif /* !_SYS_ELF32_H_ */