elf64.h 7.3 KB

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  1. /* SPDX-License-Identifier: BSD-2-Clause */
  2. /*-
  3. * Copyright (c) 1996-1998 John D. Polstra.
  4. * All rights reserved.
  5. *
  6. * Redistribution and use in source and binary forms, with or without
  7. * modification, are permitted provided that the following conditions
  8. * are met:
  9. * 1. Redistributions of source code must retain the above copyright
  10. * notice, this list of conditions and the following disclaimer.
  11. * 2. Redistributions in binary form must reproduce the above copyright
  12. * notice, this list of conditions and the following disclaimer in the
  13. * documentation and/or other materials provided with the distribution.
  14. *
  15. * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18. * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25. * SUCH DAMAGE.
  26. *
  27. * $FreeBSD$
  28. */
  29. #ifndef _SYS_ELF64_H_
  30. #define _SYS_ELF64_H_ 1
  31. #include <elf_common.h>
  32. #include <stdint.h>
  33. /*
  34. * ELF definitions common to all 64-bit architectures.
  35. */
  36. typedef uint64_t Elf64_Addr;
  37. typedef uint16_t Elf64_Half;
  38. typedef uint64_t Elf64_Off;
  39. typedef int32_t Elf64_Sword;
  40. typedef int64_t Elf64_Sxword;
  41. typedef uint32_t Elf64_Word;
  42. typedef uint64_t Elf64_Lword;
  43. typedef uint64_t Elf64_Xword;
  44. /*
  45. * Types of dynamic symbol hash table bucket and chain elements.
  46. *
  47. * This is inconsistent among 64 bit architectures, so a machine dependent
  48. * typedef is required.
  49. */
  50. typedef Elf64_Word Elf64_Hashelt;
  51. /* Non-standard class-dependent datatype used for abstraction. */
  52. typedef Elf64_Xword Elf64_Size;
  53. typedef Elf64_Sxword Elf64_Ssize;
  54. /*
  55. * ELF header.
  56. */
  57. typedef struct {
  58. unsigned char e_ident[EI_NIDENT]; /* File identification. */
  59. Elf64_Half e_type; /* File type. */
  60. Elf64_Half e_machine; /* Machine architecture. */
  61. Elf64_Word e_version; /* ELF format version. */
  62. Elf64_Addr e_entry; /* Entry point. */
  63. Elf64_Off e_phoff; /* Program header file offset. */
  64. Elf64_Off e_shoff; /* Section header file offset. */
  65. Elf64_Word e_flags; /* Architecture-specific flags. */
  66. Elf64_Half e_ehsize; /* Size of ELF header in bytes. */
  67. Elf64_Half e_phentsize; /* Size of program header entry. */
  68. Elf64_Half e_phnum; /* Number of program header entries. */
  69. Elf64_Half e_shentsize; /* Size of section header entry. */
  70. Elf64_Half e_shnum; /* Number of section header entries. */
  71. Elf64_Half e_shstrndx; /* Section name strings section. */
  72. } Elf64_Ehdr;
  73. /*
  74. * Section header.
  75. */
  76. typedef struct {
  77. Elf64_Word sh_name; /* Section name (index into the
  78. section header string table). */
  79. Elf64_Word sh_type; /* Section type. */
  80. Elf64_Xword sh_flags; /* Section flags. */
  81. Elf64_Addr sh_addr; /* Address in memory image. */
  82. Elf64_Off sh_offset; /* Offset in file. */
  83. Elf64_Xword sh_size; /* Size in bytes. */
  84. Elf64_Word sh_link; /* Index of a related section. */
  85. Elf64_Word sh_info; /* Depends on section type. */
  86. Elf64_Xword sh_addralign; /* Alignment in bytes. */
  87. Elf64_Xword sh_entsize; /* Size of each entry in section. */
  88. } Elf64_Shdr;
  89. /*
  90. * Program header.
  91. */
  92. typedef struct {
  93. Elf64_Word p_type; /* Entry type. */
  94. Elf64_Word p_flags; /* Access permission flags. */
  95. Elf64_Off p_offset; /* File offset of contents. */
  96. Elf64_Addr p_vaddr; /* Virtual address in memory image. */
  97. Elf64_Addr p_paddr; /* Physical address (not used). */
  98. Elf64_Xword p_filesz; /* Size of contents in file. */
  99. Elf64_Xword p_memsz; /* Size of contents in memory. */
  100. Elf64_Xword p_align; /* Alignment in memory and file. */
  101. } Elf64_Phdr;
  102. /*
  103. * Dynamic structure. The ".dynamic" section contains an array of them.
  104. */
  105. typedef struct {
  106. Elf64_Sxword d_tag; /* Entry type. */
  107. union {
  108. Elf64_Xword d_val; /* Integer value. */
  109. Elf64_Addr d_ptr; /* Address value. */
  110. } d_un;
  111. } Elf64_Dyn;
  112. /*
  113. * Relocation entries.
  114. */
  115. /* Relocations that don't need an addend field. */
  116. typedef struct {
  117. Elf64_Addr r_offset; /* Location to be relocated. */
  118. Elf64_Xword r_info; /* Relocation type and symbol index. */
  119. } Elf64_Rel;
  120. /* Relocations that need an addend field. */
  121. typedef struct {
  122. Elf64_Addr r_offset; /* Location to be relocated. */
  123. Elf64_Xword r_info; /* Relocation type and symbol index. */
  124. Elf64_Sxword r_addend; /* Addend. */
  125. } Elf64_Rela;
  126. /* Macros for accessing the fields of r_info. */
  127. #define ELF64_R_SYM(info) ((info) >> 32)
  128. #define ELF64_R_TYPE(info) ((info) & 0xffffffffL)
  129. /* Macro for constructing r_info from field values. */
  130. #define ELF64_R_INFO(sym, type) (((sym) << 32) + ((type) & 0xffffffffL))
  131. #define ELF64_R_TYPE_DATA(info) (((Elf64_Xword)(info)<<32)>>40)
  132. #define ELF64_R_TYPE_ID(info) (((Elf64_Xword)(info)<<56)>>56)
  133. #define ELF64_R_TYPE_INFO(data, type) \
  134. (((Elf64_Xword)(data)<<8)+(Elf64_Xword)(type))
  135. /*
  136. * Note entry header
  137. */
  138. typedef Elf_Note Elf64_Nhdr;
  139. /*
  140. * Move entry
  141. */
  142. typedef struct {
  143. Elf64_Lword m_value; /* symbol value */
  144. Elf64_Xword m_info; /* size + index */
  145. Elf64_Xword m_poffset; /* symbol offset */
  146. Elf64_Half m_repeat; /* repeat count */
  147. Elf64_Half m_stride; /* stride info */
  148. } Elf64_Move;
  149. #define ELF64_M_SYM(info) ((info)>>8)
  150. #define ELF64_M_SIZE(info) ((unsigned char)(info))
  151. #define ELF64_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size))
  152. /*
  153. * Hardware/Software capabilities entry
  154. */
  155. typedef struct {
  156. Elf64_Xword c_tag; /* how to interpret value */
  157. union {
  158. Elf64_Xword c_val;
  159. Elf64_Addr c_ptr;
  160. } c_un;
  161. } Elf64_Cap;
  162. /*
  163. * Symbol table entries.
  164. */
  165. typedef struct {
  166. Elf64_Word st_name; /* String table index of name. */
  167. unsigned char st_info; /* Type and binding information. */
  168. unsigned char st_other; /* Reserved (not used). */
  169. Elf64_Half st_shndx; /* Section index of symbol. */
  170. Elf64_Addr st_value; /* Symbol value. */
  171. Elf64_Xword st_size; /* Size of associated object. */
  172. } Elf64_Sym;
  173. /* Macros for accessing the fields of st_info. */
  174. #define ELF64_ST_BIND(info) ((info) >> 4)
  175. #define ELF64_ST_TYPE(info) ((info) & 0xf)
  176. /* Macro for constructing st_info from field values. */
  177. #define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
  178. /* Macro for accessing the fields of st_other. */
  179. #define ELF64_ST_VISIBILITY(oth) ((oth) & 0x3)
  180. /* Structures used by Sun & GNU-style symbol versioning. */
  181. typedef struct {
  182. Elf64_Half vd_version;
  183. Elf64_Half vd_flags;
  184. Elf64_Half vd_ndx;
  185. Elf64_Half vd_cnt;
  186. Elf64_Word vd_hash;
  187. Elf64_Word vd_aux;
  188. Elf64_Word vd_next;
  189. } Elf64_Verdef;
  190. typedef struct {
  191. Elf64_Word vda_name;
  192. Elf64_Word vda_next;
  193. } Elf64_Verdaux;
  194. typedef struct {
  195. Elf64_Half vn_version;
  196. Elf64_Half vn_cnt;
  197. Elf64_Word vn_file;
  198. Elf64_Word vn_aux;
  199. Elf64_Word vn_next;
  200. } Elf64_Verneed;
  201. typedef struct {
  202. Elf64_Word vna_hash;
  203. Elf64_Half vna_flags;
  204. Elf64_Half vna_other;
  205. Elf64_Word vna_name;
  206. Elf64_Word vna_next;
  207. } Elf64_Vernaux;
  208. typedef Elf64_Half Elf64_Versym;
  209. typedef struct {
  210. Elf64_Half si_boundto; /* direct bindings - symbol bound to */
  211. Elf64_Half si_flags; /* per symbol flags */
  212. } Elf64_Syminfo;
  213. #endif /* !_SYS_ELF64_H_ */