| 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 |
|
|---|
| 27 | #ifndef ___internal_ldrELF32_h
|
|---|
| 28 | #define ___internal_ldrELF32_h
|
|---|
| 29 |
|
|---|
| 30 | #include "ldrELFCommon.h"
|
|---|
| 31 |
|
|---|
| 32 | /*
|
|---|
| 33 | * ELF definitions common to all 32-bit architectures.
|
|---|
| 34 | */
|
|---|
| 35 |
|
|---|
| 36 | typedef uint32_t Elf32_Addr;
|
|---|
| 37 | typedef uint16_t Elf32_Half;
|
|---|
| 38 | typedef uint32_t Elf32_Off;
|
|---|
| 39 | typedef int32_t Elf32_Sword;
|
|---|
| 40 | typedef uint32_t Elf32_Word;
|
|---|
| 41 | typedef uint32_t Elf32_Size;
|
|---|
| 42 | typedef Elf32_Off Elf32_Hashelt;
|
|---|
| 43 |
|
|---|
| 44 | /*
|
|---|
| 45 | * ELF header.
|
|---|
| 46 | */
|
|---|
| 47 |
|
|---|
| 48 | typedef struct Elf32_Ehdr {
|
|---|
| 49 | unsigned char e_ident[EI_NIDENT]; /* File identification. */
|
|---|
| 50 | Elf32_Half e_type; /* File type. */
|
|---|
| 51 | Elf32_Half e_machine; /* Machine architecture. */
|
|---|
| 52 | Elf32_Word e_version; /* ELF format version. */
|
|---|
| 53 | Elf32_Addr e_entry; /* Entry point. */
|
|---|
| 54 | Elf32_Off e_phoff; /* Program header file offset. */
|
|---|
| 55 | Elf32_Off e_shoff; /* Section header file offset. */
|
|---|
| 56 | Elf32_Word e_flags; /* Architecture-specific flags. */
|
|---|
| 57 | Elf32_Half e_ehsize; /* Size of ELF header in bytes. */
|
|---|
| 58 | Elf32_Half e_phentsize; /* Size of program header entry. */
|
|---|
| 59 | Elf32_Half e_phnum; /* Number of program header entries. */
|
|---|
| 60 | Elf32_Half e_shentsize; /* Size of section header entry. */
|
|---|
| 61 | Elf32_Half e_shnum; /* Number of section header entries. */
|
|---|
| 62 | Elf32_Half e_shstrndx; /* Section name strings section. */
|
|---|
| 63 | } Elf32_Ehdr;
|
|---|
| 64 |
|
|---|
| 65 | /*
|
|---|
| 66 | * Section header.
|
|---|
| 67 | */
|
|---|
| 68 |
|
|---|
| 69 | typedef struct {
|
|---|
| 70 | Elf32_Word sh_name; /* Section name (index into the
|
|---|
| 71 | section header string table). */
|
|---|
| 72 | Elf32_Word sh_type; /* Section type. */
|
|---|
| 73 | Elf32_Word sh_flags; /* Section flags. */
|
|---|
| 74 | Elf32_Addr sh_addr; /* Address in memory image. */
|
|---|
| 75 | Elf32_Off sh_offset; /* Offset in file. */
|
|---|
| 76 | Elf32_Size sh_size; /* Size in bytes. */
|
|---|
| 77 | Elf32_Word sh_link; /* Index of a related section. */
|
|---|
| 78 | Elf32_Word sh_info; /* Depends on section type. */
|
|---|
| 79 | Elf32_Size sh_addralign; /* Alignment in bytes. */
|
|---|
| 80 | Elf32_Size sh_entsize; /* Size of each entry in section. */
|
|---|
| 81 | } Elf32_Shdr;
|
|---|
| 82 |
|
|---|
| 83 | /*
|
|---|
| 84 | * Program header.
|
|---|
| 85 | */
|
|---|
| 86 |
|
|---|
| 87 | typedef struct {
|
|---|
| 88 | Elf32_Word p_type; /* Entry type. */
|
|---|
| 89 | Elf32_Off p_offset; /* File offset of contents. */
|
|---|
| 90 | Elf32_Addr p_vaddr; /* Virtual address in memory image. */
|
|---|
| 91 | Elf32_Addr p_paddr; /* Physical address (not used). */
|
|---|
| 92 | Elf32_Size p_filesz; /* Size of contents in file. */
|
|---|
| 93 | Elf32_Size p_memsz; /* Size of contents in memory. */
|
|---|
| 94 | Elf32_Word p_flags; /* Access permission flags. */
|
|---|
| 95 | Elf32_Size p_align; /* Alignment in memory and file. */
|
|---|
| 96 | } Elf32_Phdr;
|
|---|
| 97 |
|
|---|
| 98 | /*
|
|---|
| 99 | * Note header. (added by Ramshankar)
|
|---|
| 100 | */
|
|---|
| 101 |
|
|---|
| 102 | typedef struct {
|
|---|
| 103 | Elf32_Word n_namesz; /* length of note's name */
|
|---|
| 104 | Elf32_Word n_descsz; /* length of note's desc */
|
|---|
| 105 | Elf32_Word n_type; /* type of note */
|
|---|
| 106 | } Elf32_Nhdr;
|
|---|
| 107 |
|
|---|
| 108 | /*
|
|---|
| 109 | * Dynamic structure. The ".dynamic" section contains an array of them.
|
|---|
| 110 | */
|
|---|
| 111 |
|
|---|
| 112 | typedef struct {
|
|---|
| 113 | Elf32_Sword d_tag; /* Entry type. */
|
|---|
| 114 | union {
|
|---|
| 115 | Elf32_Size d_val; /* Integer value. */
|
|---|
| 116 | Elf32_Addr d_ptr; /* Address value. */
|
|---|
| 117 | } d_un;
|
|---|
| 118 | } Elf32_Dyn;
|
|---|
| 119 |
|
|---|
| 120 | /*
|
|---|
| 121 | * Relocation entries.
|
|---|
| 122 | */
|
|---|
| 123 |
|
|---|
| 124 | /* Relocations that don't need an addend field. */
|
|---|
| 125 | typedef struct {
|
|---|
| 126 | Elf32_Addr r_offset; /* Location to be relocated. */
|
|---|
| 127 | Elf32_Word r_info; /* Relocation type and symbol index. */
|
|---|
| 128 | } Elf32_Rel;
|
|---|
| 129 |
|
|---|
| 130 | /* Relocations that need an addend field. */
|
|---|
| 131 | typedef struct {
|
|---|
| 132 | Elf32_Addr r_offset; /* Location to be relocated. */
|
|---|
| 133 | Elf32_Word r_info; /* Relocation type and symbol index. */
|
|---|
| 134 | Elf32_Sword r_addend; /* Addend. */
|
|---|
| 135 | } Elf32_Rela;
|
|---|
| 136 |
|
|---|
| 137 | /* Macros for accessing the fields of r_info. */
|
|---|
| 138 | #define ELF32_R_SYM(info) ((info) >> 8)
|
|---|
| 139 | #define ELF32_R_TYPE(info) ((unsigned char)(info))
|
|---|
| 140 |
|
|---|
| 141 | /* Macro for constructing r_info from field values. */
|
|---|
| 142 | #define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))
|
|---|
| 143 |
|
|---|
| 144 | /*
|
|---|
| 145 | * Symbol table entries.
|
|---|
| 146 | */
|
|---|
| 147 |
|
|---|
| 148 | typedef struct {
|
|---|
| 149 | Elf32_Word st_name; /* String table index of name. */
|
|---|
| 150 | Elf32_Addr st_value; /* Symbol value. */
|
|---|
| 151 | Elf32_Size st_size; /* Size of associated object. */
|
|---|
| 152 | unsigned char st_info; /* Type and binding information. */
|
|---|
| 153 | unsigned char st_other; /* Reserved (not used). */
|
|---|
| 154 | Elf32_Half st_shndx; /* Section index of symbol. */
|
|---|
| 155 | } Elf32_Sym;
|
|---|
| 156 |
|
|---|
| 157 | /* Macros for accessing the fields of st_info. */
|
|---|
| 158 | #define ELF32_ST_BIND(info) ((info) >> 4)
|
|---|
| 159 | #define ELF32_ST_TYPE(info) ((info) & 0xf)
|
|---|
| 160 |
|
|---|
| 161 | /* Macro for constructing st_info from field values. */
|
|---|
| 162 | #define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
|
|---|
| 163 |
|
|---|
| 164 | #endif
|
|---|
| 165 |
|
|---|
