Utilities/cmelf/elf64.h

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   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  * $FreeBSD$
  29  */
  30
  31 #ifndef _SYS_ELF64_H_
  32 #define _SYS_ELF64_H_ 1
  33
  34 #include "elf_common.h"
  35
  36 /*
  37  * ELF definitions common to all 64-bit architectures.
  38  */
  39
  40 typedef uint64_t        Elf64_Addr;
  41 typedef uint16_t        Elf64_Half;
  42 typedef uint64_t        Elf64_Off;
  43 typedef int32_t         Elf64_Sword;
  44 typedef int64_t         Elf64_Sxword;
  45 typedef uint32_t        Elf64_Word;
  46 typedef uint64_t        Elf64_Lword;
  47 typedef uint64_t        Elf64_Xword;
  48
  49 /*
  50  * Types of dynamic symbol hash table bucket and chain elements.
  51  *
  52  * This is inconsistent among 64 bit architectures, so a machine dependent
  53  * typedef is required.
  54  */
  55
  56 typedef Elf64_Word      Elf64_Hashelt;
  57
  58 /* Non-standard class-dependent datatype used for abstraction. */
  59 typedef Elf64_Xword     Elf64_Size;
  60 typedef Elf64_Sxword    Elf64_Ssize;
  61
  62 /*
  63  * ELF header.
  64  */
  65
  66 typedef struct {
  67         unsigned char   e_ident[EI_NIDENT];     /* File identification. */
  68         Elf64_Half      e_type;         /* File type. */
  69         Elf64_Half      e_machine;      /* Machine architecture. */
  70         Elf64_Word      e_version;      /* ELF format version. */
  71         Elf64_Addr      e_entry;        /* Entry point. */
  72         Elf64_Off       e_phoff;        /* Program header file offset. */
  73         Elf64_Off       e_shoff;        /* Section header file offset. */
  74         Elf64_Word      e_flags;        /* Architecture-specific flags. */
  75         Elf64_Half      e_ehsize;       /* Size of ELF header in bytes. */
  76         Elf64_Half      e_phentsize;    /* Size of program header entry. */
  77         Elf64_Half      e_phnum;        /* Number of program header entries. */
  78         Elf64_Half      e_shentsize;    /* Size of section header entry. */
  79         Elf64_Half      e_shnum;        /* Number of section header entries. */
  80         Elf64_Half      e_shstrndx;     /* Section name strings section. */
  81 } Elf64_Ehdr;
  82
  83 /*
  84  * Shared object information, found in SHT_MIPS_LIBLIST.
  85  */
  86
  87 typedef struct {
  88         Elf64_Word l_name;              /* The name of a shared object. */
  89         Elf64_Word l_time_stamp;        /* 64-bit timestamp. */
  90         Elf64_Word l_checksum;          /* Checksum of visible symbols, sizes. */
  91         Elf64_Word l_version;           /* Interface version string index. */
  92         Elf64_Word l_flags;             /* Flags (LL_*). */
  93 } Elf64_Lib;
  94
  95 /*
  96  * Section header.
  97  */
  98
  99 typedef struct {
 100         Elf64_Word      sh_name;        /* Section name (index into the
 101                                            section header string table). */
 102         Elf64_Word      sh_type;        /* Section type. */
 103         Elf64_Xword     sh_flags;       /* Section flags. */
 104         Elf64_Addr      sh_addr;        /* Address in memory image. */
 105         Elf64_Off       sh_offset;      /* Offset in file. */
 106         Elf64_Xword     sh_size;        /* Size in bytes. */
 107         Elf64_Word      sh_link;        /* Index of a related section. */
 108         Elf64_Word      sh_info;        /* Depends on section type. */
 109         Elf64_Xword     sh_addralign;   /* Alignment in bytes. */
 110         Elf64_Xword     sh_entsize;     /* Size of each entry in section. */
 111 } Elf64_Shdr;
 112
 113 /*
 114  * Program header.
 115  */
 116
 117 typedef struct {
 118         Elf64_Word      p_type;         /* Entry type. */
 119         Elf64_Word      p_flags;        /* Access permission flags. */
 120         Elf64_Off       p_offset;       /* File offset of contents. */
 121         Elf64_Addr      p_vaddr;        /* Virtual address in memory image. */
 122         Elf64_Addr      p_paddr;        /* Physical address (not used). */
 123         Elf64_Xword     p_filesz;       /* Size of contents in file. */
 124         Elf64_Xword     p_memsz;        /* Size of contents in memory. */
 125         Elf64_Xword     p_align;        /* Alignment in memory and file. */
 126 } Elf64_Phdr;
 127
 128 /*
 129  * Dynamic structure.  The ".dynamic" section contains an array of them.
 130  */
 131
 132 typedef struct {
 133         Elf64_Sxword    d_tag;          /* Entry type. */
 134         union {
 135                 Elf64_Xword     d_val;  /* Integer value. */
 136                 Elf64_Addr      d_ptr;  /* Address value. */
 137         } d_un;
 138 } Elf64_Dyn;
 139
 140 /*
 141  * Relocation entries.
 142  */
 143
 144 /* Relocations that don't need an addend field. */
 145 typedef struct {
 146         Elf64_Addr      r_offset;       /* Location to be relocated. */
 147         Elf64_Xword     r_info;         /* Relocation type and symbol index. */
 148 } Elf64_Rel;
 149
 150 /* Relocations that need an addend field. */
 151 typedef struct {
 152         Elf64_Addr      r_offset;       /* Location to be relocated. */
 153         Elf64_Xword     r_info;         /* Relocation type and symbol index. */
 154         Elf64_Sxword    r_addend;       /* Addend. */
 155 } Elf64_Rela;
 156
 157 /* Macros for accessing the fields of r_info. */
 158 #define ELF64_R_SYM(info)       ((info) >> 32)
 159 #define ELF64_R_TYPE(info)      ((info) & 0xffffffffL)
 160
 161 /* Macro for constructing r_info from field values. */
 162 #define ELF64_R_INFO(sym, type) (((sym) << 32) + ((type) & 0xffffffffL))
 163
 164 #define ELF64_R_TYPE_DATA(info) (((Elf64_Xword)(info)<<32)>>40)
 165 #define ELF64_R_TYPE_ID(info)   (((Elf64_Xword)(info)<<56)>>56)
 166 #define ELF64_R_TYPE_INFO(data, type)   \
 167                                 (((Elf64_Xword)(data)<<8)+(Elf64_Xword)(type))
 168
 169 /*
 170  *      Note entry header
 171  */
 172 typedef Elf_Note Elf64_Nhdr;
 173
 174 /*
 175  *      Move entry
 176  */
 177 typedef 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  */
 192 typedef 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
 204 typedef 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. */
 224 typedef 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
 234 typedef struct {
 235         Elf64_Word      vda_name;
 236         Elf64_Word      vda_next;
 237 } Elf64_Verdaux;
 238
 239 typedef 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
 247 typedef 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
 255 typedef Elf64_Half Elf64_Versym;
 256
 257 typedef struct {
 258         Elf64_Half      si_boundto;     /* direct bindings - symbol bound to */
 259         Elf64_Half      si_flags;       /* per symbol flags */
 260 } Elf64_Syminfo;
 261
 262 typedef 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_ */