mono/utils/freebsd-elf64.h

   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/elf64.h,v 1.10.14.2.2.1 2008/10/02 02:57:24 kensmith Exp $
  27  */
  28
  29 #ifndef _SYS_ELF64_H_
  30 #define _SYS_ELF64_H_ 1
  31
  32 #include "freebsd-elf_common.h"
  33
  34 /*
  35  * ELF definitions common to all 64-bit architectures.
  36  */
  37
  38 typedef uint64_t        Elf64_Addr;
  39 typedef uint16_t        Elf64_Half;
  40 typedef uint64_t        Elf64_Off;
  41 typedef int32_t         Elf64_Sword;
  42 typedef int64_t         Elf64_Sxword;
  43 typedef uint32_t        Elf64_Word;
  44 typedef uint64_t        Elf64_Lword;
  45 typedef uint64_t        Elf64_Xword;
  46
  47 /*
  48  * Types of dynamic symbol hash table bucket and chain elements.
  49  *
  50  * This is inconsistent among 64 bit architectures, so a machine dependent
  51  * typedef is required.
  52  */
  53
  54 #ifdef __alpha__
  55 typedef Elf64_Off       Elf64_Hashelt;
  56 #else
  57 typedef Elf64_Word      Elf64_Hashelt;
  58 #endif
  59
  60 /* Non-standard class-dependent datatype used for abstraction. */
  61 typedef Elf64_Xword     Elf64_Size;
  62 typedef Elf64_Sxword    Elf64_Ssize;
  63
  64 /*
  65  * ELF header.
  66  */
  67
  68 typedef struct {
  69         unsigned char   e_ident[EI_NIDENT];     /* File identification. */
  70         Elf64_Half      e_type;         /* File type. */
  71         Elf64_Half      e_machine;      /* Machine architecture. */
  72         Elf64_Word      e_version;      /* ELF format version. */
  73         Elf64_Addr      e_entry;        /* Entry point. */
  74         Elf64_Off       e_phoff;        /* Program header file offset. */
  75         Elf64_Off       e_shoff;        /* Section header file offset. */
  76         Elf64_Word      e_flags;        /* Architecture-specific flags. */
  77         Elf64_Half      e_ehsize;       /* Size of ELF header in bytes. */
  78         Elf64_Half      e_phentsize;    /* Size of program header entry. */
  79         Elf64_Half      e_phnum;        /* Number of program header entries. */
  80         Elf64_Half      e_shentsize;    /* Size of section header entry. */
  81         Elf64_Half      e_shnum;        /* Number of section header entries. */
  82         Elf64_Half      e_shstrndx;     /* Section name strings section. */
  83 } Elf64_Ehdr;
  84
  85 /*
  86  * Section header.
  87  */
  88
  89 typedef struct {
  90         Elf64_Word      sh_name;        /* Section name (index into the
  91                                            section header string table). */
  92         Elf64_Word      sh_type;        /* Section type. */
  93         Elf64_Xword     sh_flags;       /* Section flags. */
  94         Elf64_Addr      sh_addr;        /* Address in memory image. */
  95         Elf64_Off       sh_offset;      /* Offset in file. */
  96         Elf64_Xword     sh_size;        /* Size in bytes. */
  97         Elf64_Word      sh_link;        /* Index of a related section. */
  98         Elf64_Word      sh_info;        /* Depends on section type. */
  99         Elf64_Xword     sh_addralign;   /* Alignment in bytes. */
 100         Elf64_Xword     sh_entsize;     /* Size of each entry in section. */
 101 } Elf64_Shdr;
 102
 103 /*
 104  * Program header.
 105  */
 106
 107 typedef struct {
 108         Elf64_Word      p_type;         /* Entry type. */
 109         Elf64_Word      p_flags;        /* Access permission flags. */
 110         Elf64_Off       p_offset;       /* File offset of contents. */
 111         Elf64_Addr      p_vaddr;        /* Virtual address in memory image. */
 112         Elf64_Addr      p_paddr;        /* Physical address (not used). */
 113         Elf64_Xword     p_filesz;       /* Size of contents in file. */
 114         Elf64_Xword     p_memsz;        /* Size of contents in memory. */
 115         Elf64_Xword     p_align;        /* Alignment in memory and file. */
 116 } Elf64_Phdr;
 117
 118 /*
 119  * Dynamic structure.  The ".dynamic" section contains an array of them.
 120  */
 121
 122 typedef struct {
 123         Elf64_Sxword    d_tag;          /* Entry type. */
 124         union {
 125                 Elf64_Xword     d_val;  /* Integer value. */
 126                 Elf64_Addr      d_ptr;  /* Address value. */
 127         } d_un;
 128 } Elf64_Dyn;
 129
 130 /*
 131  * Relocation entries.
 132  */
 133
 134 /* Relocations that don't need an addend field. */
 135 typedef struct {
 136         Elf64_Addr      r_offset;       /* Location to be relocated. */
 137         Elf64_Xword     r_info;         /* Relocation type and symbol index. */
 138 } Elf64_Rel;
 139
 140 /* Relocations that need an addend field. */
 141 typedef struct {
 142         Elf64_Addr      r_offset;       /* Location to be relocated. */
 143         Elf64_Xword     r_info;         /* Relocation type and symbol index. */
 144         Elf64_Sxword    r_addend;       /* Addend. */
 145 } Elf64_Rela;
 146
 147 /* Macros for accessing the fields of r_info. */
 148 #define ELF64_R_SYM(info)       ((info) >> 32)
 149 #define ELF64_R_TYPE(info)      ((info) & 0xffffffffL)
 150
 151 /* Macro for constructing r_info from field values. */
 152 #define ELF64_R_INFO(sym, type) (((sym) << 32) + ((type) & 0xffffffffL))
 153
 154 #define ELF64_R_TYPE_DATA(info) (((Elf64_Xword)(info)<<32)>>40)
 155 #define ELF64_R_TYPE_ID(info)   (((Elf64_Xword)(info)<<56)>>56)
 156 #define ELF64_R_TYPE_INFO(data, type)   \
 157                 (((Elf64_Xword)(data)<<8)+(Elf64_Xword)(type))
 158
 159 /*
 160  *      Note entry header
 161  */
 162 typedef Elf_Note Elf64_Nhdr;
 163
 164 /*
 165  *      Move entry
 166  */
 167 typedef struct {
 168         Elf64_Lword     m_value;        /* symbol value */
 169         Elf64_Xword     m_info;         /* size + index */
 170         Elf64_Xword     m_poffset;      /* symbol offset */
 171         Elf64_Half      m_repeat;       /* repeat count */
 172         Elf64_Half      m_stride;       /* stride info */
 173 } Elf64_Move;
 174
 175 #define ELF64_M_SYM(info)       ((info)>>8)
 176 #define ELF64_M_SIZE(info)      ((unsigned char)(info))
 177 #define ELF64_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size))
 178
 179 /*
 180  *      Hardware/Software capabilities entry
 181  */
 182 typedef struct {
 183         Elf64_Xword     c_tag;          /* how to interpret value */
 184         union {
 185                 Elf64_Xword     c_val;
 186                 Elf64_Addr      c_ptr;
 187         } c_un;
 188 } Elf64_Cap;
 189
 190 /*
 191  * Symbol table entries.
 192  */
 193
 194 typedef struct {
 195         Elf64_Word      st_name;        /* String table index of name. */
 196         unsigned char   st_info;        /* Type and binding information. */
 197         unsigned char   st_other;       /* Reserved (not used). */
 198         Elf64_Half      st_shndx;       /* Section index of symbol. */
 199         Elf64_Addr      st_value;       /* Symbol value. */
 200         Elf64_Xword     st_size;        /* Size of associated object. */
 201 } Elf64_Sym;
 202
 203 /* Macros for accessing the fields of st_info. */
 204 #define ELF64_ST_BIND(info)             ((info) >> 4)
 205 #define ELF64_ST_TYPE(info)             ((info) & 0xf)
 206
 207 /* Macro for constructing st_info from field values. */
 208 #define ELF64_ST_INFO(bind, type)       (((bind) << 4) + ((type) & 0xf))
 209
 210 /* Macro for accessing the fields of st_other. */
 211 #define ELF64_ST_VISIBILITY(oth)        ((oth) & 0x3)
 212
 213 /* Structures used by Sun & GNU-style symbol versioning. */
 214 typedef struct {
 215         Elf64_Half      vd_version;
 216         Elf64_Half      vd_flags;
 217         Elf64_Half      vd_ndx;
 218         Elf64_Half      vd_cnt;
 219         Elf64_Word      vd_hash;
 220         Elf64_Word      vd_aux;
 221         Elf64_Word      vd_next;
 222 } Elf64_Verdef;
 223
 224 typedef struct {
 225         Elf64_Word      vda_name;
 226         Elf64_Word      vda_next;
 227 } Elf64_Verdaux;
 228
 229 typedef struct {
 230         Elf64_Half      vn_version;
 231         Elf64_Half      vn_cnt;
 232         Elf64_Word      vn_file;
 233         Elf64_Word      vn_aux;
 234         Elf64_Word      vn_next;
 235 } Elf64_Verneed;
 236
 237 typedef struct {
 238         Elf64_Word      vna_hash;
 239         Elf64_Half      vna_flags;
 240         Elf64_Half      vna_other;
 241         Elf64_Word      vna_name;
 242         Elf64_Word      vna_next;
 243 } Elf64_Vernaux;
 244
 245 typedef Elf64_Half Elf64_Versym;
 246
 247 typedef struct {
 248         Elf64_Half      si_boundto;     /* direct bindings - symbol bound to */
 249         Elf64_Half      si_flags;       /* per symbol flags */
 250 } Elf64_Syminfo;
 251
 252 #endif /* !_SYS_ELF64_H_ */