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  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 2002/05/30 08:32:18 dfr Exp $
  27. */
  28. #ifndef _SYS_ELF64_H_
  29. #define _SYS_ELF64_H_ 1
  30. #include <sys/elf_common.h>
  31. /*
  32. * ELF definitions common to all 64-bit architectures.
  33. */
  34. typedef uint64_t Elf64_Addr;
  35. typedef uint16_t Elf64_Half;
  36. typedef uint32_t Elf64_Word;
  37. typedef int32_t Elf64_Sword;
  38. typedef uint64_t Elf64_Xword;
  39. typedef int64_t Elf64_Sxword;
  40. typedef uint64_t Elf64_Off;
  41. typedef uint16_t Elf64_Section;
  42. typedef Elf64_Half Elf64_Versym;
  43. typedef uint16_t Elf64_Quarter;
  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. #ifdef __alpha__
  51. typedef Elf64_Off Elf64_Hashelt;
  52. #else
  53. typedef Elf64_Half Elf64_Hashelt;
  54. #endif
  55. /*
  56. * ELF header.
  57. */
  58. typedef struct {
  59. unsigned char e_ident[EI_NIDENT]; /* File identification. */
  60. Elf64_Half e_type; /* File type. */
  61. Elf64_Half e_machine; /* Machine architecture. */
  62. Elf64_Word e_version; /* ELF format version. */
  63. Elf64_Addr e_entry; /* Entry point. */
  64. Elf64_Off e_phoff; /* Program header file offset. */
  65. Elf64_Off e_shoff; /* Section header file offset. */
  66. Elf64_Word e_flags; /* Architecture-specific flags. */
  67. Elf64_Half e_ehsize; /* Size of ELF header in bytes. */
  68. Elf64_Half e_phentsize; /* Size of program header entry. */
  69. Elf64_Half e_phnum; /* Number of program header entries. */
  70. Elf64_Half e_shentsize; /* Size of section header entry. */
  71. Elf64_Half e_shnum; /* Number of section header entries. */
  72. Elf64_Half e_shstrndx; /* Section name strings section. */
  73. } Elf64_Ehdr;
  74. /*
  75. * Section header.
  76. */
  77. typedef struct {
  78. Elf64_Word sh_name; /* Section name (index into the
  79. section header string table). */
  80. Elf64_Word sh_type; /* Section type. */
  81. Elf64_Xword sh_flags; /* Section flags. */
  82. Elf64_Addr sh_addr; /* Address in memory image. */
  83. Elf64_Off sh_offset; /* Offset in file. */
  84. Elf64_Xword sh_size; /* Size in bytes. */
  85. Elf64_Word sh_link; /* Index of a related section. */
  86. Elf64_Word sh_info; /* Depends on section type. */
  87. Elf64_Xword sh_addralign; /* Alignment in bytes. */
  88. Elf64_Xword sh_entsize; /* Size of each entry in section. */
  89. } Elf64_Shdr;
  90. /*
  91. * Program header.
  92. */
  93. typedef struct {
  94. Elf64_Word p_type; /* Entry type. */
  95. Elf64_Word p_flags; /* Access permission flags. */
  96. Elf64_Off p_offset; /* File offset of contents. */
  97. Elf64_Addr p_vaddr; /* Virtual address in memory image. */
  98. Elf64_Addr p_paddr; /* Physical address (not used). */
  99. Elf64_Xword p_filesz; /* Size of contents in file. */
  100. Elf64_Xword p_memsz; /* Size of contents in memory. */
  101. Elf64_Xword p_align; /* Alignment in memory and file. */
  102. } Elf64_Phdr;
  103. /*
  104. * Dynamic structure. The ".dynamic" section contains an array of them.
  105. */
  106. typedef struct {
  107. Elf64_Sxword d_tag; /* Entry type. */
  108. union {
  109. Elf64_Xword d_val; /* Integer value. */
  110. Elf64_Addr d_ptr; /* Address value. */
  111. } d_un;
  112. } Elf64_Dyn;
  113. /*
  114. * Relocation entries.
  115. */
  116. /* Relocations that don't need an addend field. */
  117. typedef struct {
  118. Elf64_Addr r_offset; /* Location to be relocated. */
  119. Elf64_Xword r_info; /* Relocation type and symbol index. */
  120. } Elf64_Rel;
  121. /* Relocations that need an addend field. */
  122. typedef struct {
  123. Elf64_Addr r_offset; /* Location to be relocated. */
  124. Elf64_Xword r_info; /* Relocation type and symbol index. */
  125. Elf64_Sxword r_addend; /* Addend. */
  126. } Elf64_Rela;
  127. /* Macros for accessing the fields of r_info. */
  128. #define ELF64_R_SYM(info) ((info) >> 32)
  129. #define ELF64_R_TYPE(info) ((unsigned char)(info))
  130. /* Macro for constructing r_info from field values. */
  131. #define ELF64_R_INFO(sym, type) (((sym) << 32) + (unsigned char)(type))
  132. /*
  133. * Symbol table entries.
  134. */
  135. typedef struct {
  136. Elf64_Word st_name; /* String table index of name. */
  137. unsigned char st_info; /* Type and binding information. */
  138. unsigned char st_other; /* Reserved (not used). */
  139. Elf64_Section st_shndx; /* Section index of symbol. */
  140. Elf64_Addr st_value; /* Symbol value. */
  141. Elf64_Xword st_size; /* Size of associated object. */
  142. } Elf64_Sym;
  143. /* Macros for accessing the fields of st_info. */
  144. #define ELF64_ST_BIND(info) ((info) >> 4)
  145. #define ELF64_ST_TYPE(info) ((info) & 0xf)
  146. /* Macro for constructing st_info from field values. */
  147. #define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
  148. #endif /* !_SYS_ELF64_H_ */