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1 #ifndef _LINUX_ELF_H |
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2 #define _LINUX_ELF_H |
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3 |
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4 #include <linux/types.h> |
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5 #include <linux/elf-em.h> |
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6 #ifdef __KERNEL__ |
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7 #include <asm/elf.h> |
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8 #endif |
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9 |
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10 struct file; |
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11 |
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12 #ifndef elf_read_implies_exec |
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13 /* Executables for which elf_read_implies_exec() returns TRUE will |
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14 have the READ_IMPLIES_EXEC personality flag set automatically. |
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15 Override in asm/elf.h as needed. */ |
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16 # define elf_read_implies_exec(ex, have_pt_gnu_stack) 0 |
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17 #endif |
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18 |
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19 /* 32-bit ELF base types. */ |
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20 typedef __u32 Elf32_Addr; |
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21 typedef __u16 Elf32_Half; |
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22 typedef __u32 Elf32_Off; |
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23 typedef __s32 Elf32_Sword; |
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24 typedef __u32 Elf32_Word; |
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25 |
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26 /* 64-bit ELF base types. */ |
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27 typedef __u64 Elf64_Addr; |
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28 typedef __u16 Elf64_Half; |
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29 typedef __s16 Elf64_SHalf; |
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30 typedef __u64 Elf64_Off; |
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31 typedef __s32 Elf64_Sword; |
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32 typedef __u32 Elf64_Word; |
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33 typedef __u64 Elf64_Xword; |
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34 typedef __s64 Elf64_Sxword; |
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35 |
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36 /* These constants are for the segment types stored in the image headers */ |
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37 #define PT_NULL 0 |
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38 #define PT_LOAD 1 |
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39 #define PT_DYNAMIC 2 |
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40 #define PT_INTERP 3 |
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41 #define PT_NOTE 4 |
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42 #define PT_SHLIB 5 |
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43 #define PT_PHDR 6 |
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44 #define PT_TLS 7 /* Thread local storage segment */ |
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45 #define PT_LOOS 0x60000000 /* OS-specific */ |
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46 #define PT_HIOS 0x6fffffff /* OS-specific */ |
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47 #define PT_LOPROC 0x70000000 |
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48 #define PT_HIPROC 0x7fffffff |
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49 #define PT_GNU_EH_FRAME 0x6474e550 |
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50 |
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51 #define PT_GNU_STACK (PT_LOOS + 0x474e551) |
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52 |
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53 /* These constants define the different elf file types */ |
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54 #define ET_NONE 0 |
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55 #define ET_REL 1 |
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56 #define ET_EXEC 2 |
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57 #define ET_DYN 3 |
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58 #define ET_CORE 4 |
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59 #define ET_LOPROC 0xff00 |
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60 #define ET_HIPROC 0xffff |
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61 |
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62 /* This is the info that is needed to parse the dynamic section of the file */ |
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63 #define DT_NULL 0 |
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64 #define DT_NEEDED 1 |
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65 #define DT_PLTRELSZ 2 |
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66 #define DT_PLTGOT 3 |
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67 #define DT_HASH 4 |
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68 #define DT_STRTAB 5 |
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69 #define DT_SYMTAB 6 |
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70 #define DT_RELA 7 |
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71 #define DT_RELASZ 8 |
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72 #define DT_RELAENT 9 |
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73 #define DT_STRSZ 10 |
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74 #define DT_SYMENT 11 |
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75 #define DT_INIT 12 |
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76 #define DT_FINI 13 |
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77 #define DT_SONAME 14 |
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78 #define DT_RPATH 15 |
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79 #define DT_SYMBOLIC 16 |
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80 #define DT_REL 17 |
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81 #define DT_RELSZ 18 |
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82 #define DT_RELENT 19 |
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83 #define DT_PLTREL 20 |
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84 #define DT_DEBUG 21 |
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85 #define DT_TEXTREL 22 |
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86 #define DT_JMPREL 23 |
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87 #define DT_ENCODING 32 |
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88 #define OLD_DT_LOOS 0x60000000 |
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89 #define DT_LOOS 0x6000000d |
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90 #define DT_HIOS 0x6ffff000 |
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91 #define DT_VALRNGLO 0x6ffffd00 |
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92 #define DT_VALRNGHI 0x6ffffdff |
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93 #define DT_ADDRRNGLO 0x6ffffe00 |
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94 #define DT_ADDRRNGHI 0x6ffffeff |
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95 #define DT_VERSYM 0x6ffffff0 |
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96 #define DT_RELACOUNT 0x6ffffff9 |
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97 #define DT_RELCOUNT 0x6ffffffa |
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98 #define DT_FLAGS_1 0x6ffffffb |
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99 #define DT_VERDEF 0x6ffffffc |
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100 #define DT_VERDEFNUM 0x6ffffffd |
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101 #define DT_VERNEED 0x6ffffffe |
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102 #define DT_VERNEEDNUM 0x6fffffff |
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103 #define OLD_DT_HIOS 0x6fffffff |
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104 #define DT_LOPROC 0x70000000 |
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105 #define DT_HIPROC 0x7fffffff |
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106 |
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107 /* This info is needed when parsing the symbol table */ |
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108 #define STB_LOCAL 0 |
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109 #define STB_GLOBAL 1 |
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110 #define STB_WEAK 2 |
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111 |
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112 #define STT_NOTYPE 0 |
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113 #define STT_OBJECT 1 |
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114 #define STT_FUNC 2 |
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115 #define STT_SECTION 3 |
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116 #define STT_FILE 4 |
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117 #define STT_COMMON 5 |
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118 #define STT_TLS 6 |
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119 |
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120 #define ELF_ST_BIND(x) ((x) >> 4) |
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121 #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) |
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122 #define ELF32_ST_BIND(x) ELF_ST_BIND(x) |
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123 #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) |
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124 #define ELF64_ST_BIND(x) ELF_ST_BIND(x) |
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125 #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) |
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126 |
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127 typedef struct dynamic{ |
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128 Elf32_Sword d_tag; |
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129 union{ |
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130 Elf32_Sword d_val; |
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131 Elf32_Addr d_ptr; |
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132 } d_un; |
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133 } Elf32_Dyn; |
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134 |
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135 typedef struct { |
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136 Elf64_Sxword d_tag; /* entry tag value */ |
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137 union { |
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138 Elf64_Xword d_val; |
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139 Elf64_Addr d_ptr; |
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140 } d_un; |
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141 } Elf64_Dyn; |
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142 |
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143 /* The following are used with relocations */ |
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144 #define ELF32_R_SYM(x) ((x) >> 8) |
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145 #define ELF32_R_TYPE(x) ((x) & 0xff) |
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146 |
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147 #define ELF64_R_SYM(i) ((i) >> 32) |
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148 #define ELF64_R_TYPE(i) ((i) & 0xffffffff) |
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149 |
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150 typedef struct elf32_rel { |
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151 Elf32_Addr r_offset; |
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152 Elf32_Word r_info; |
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153 } Elf32_Rel; |
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154 |
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155 typedef struct elf64_rel { |
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156 Elf64_Addr r_offset; /* Location at which to apply the action */ |
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157 Elf64_Xword r_info; /* index and type of relocation */ |
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158 } Elf64_Rel; |
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159 |
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160 typedef struct elf32_rela{ |
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161 Elf32_Addr r_offset; |
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162 Elf32_Word r_info; |
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163 Elf32_Sword r_addend; |
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164 } Elf32_Rela; |
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165 |
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166 typedef struct elf64_rela { |
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167 Elf64_Addr r_offset; /* Location at which to apply the action */ |
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168 Elf64_Xword r_info; /* index and type of relocation */ |
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169 Elf64_Sxword r_addend; /* Constant addend used to compute value */ |
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170 } Elf64_Rela; |
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171 |
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172 typedef struct elf32_sym{ |
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173 Elf32_Word st_name; |
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174 Elf32_Addr st_value; |
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175 Elf32_Word st_size; |
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176 unsigned char st_info; |
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177 unsigned char st_other; |
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178 Elf32_Half st_shndx; |
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179 } Elf32_Sym; |
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180 |
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181 typedef struct elf64_sym { |
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182 Elf64_Word st_name; /* Symbol name, index in string tbl */ |
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183 unsigned char st_info; /* Type and binding attributes */ |
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184 unsigned char st_other; /* No defined meaning, 0 */ |
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185 Elf64_Half st_shndx; /* Associated section index */ |
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186 Elf64_Addr st_value; /* Value of the symbol */ |
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187 Elf64_Xword st_size; /* Associated symbol size */ |
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188 } Elf64_Sym; |
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189 |
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190 |
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191 #define EI_NIDENT 16 |
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192 |
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193 typedef struct elf32_hdr{ |
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194 unsigned char e_ident[EI_NIDENT]; |
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195 Elf32_Half e_type; |
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196 Elf32_Half e_machine; |
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197 Elf32_Word e_version; |
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198 Elf32_Addr e_entry; /* Entry point */ |
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199 Elf32_Off e_phoff; |
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200 Elf32_Off e_shoff; |
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201 Elf32_Word e_flags; |
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202 Elf32_Half e_ehsize; |
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203 Elf32_Half e_phentsize; |
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204 Elf32_Half e_phnum; |
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205 Elf32_Half e_shentsize; |
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206 Elf32_Half e_shnum; |
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207 Elf32_Half e_shstrndx; |
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208 } Elf32_Ehdr; |
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209 |
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210 typedef struct elf64_hdr { |
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211 unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ |
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212 Elf64_Half e_type; |
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213 Elf64_Half e_machine; |
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214 Elf64_Word e_version; |
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215 Elf64_Addr e_entry; /* Entry point virtual address */ |
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216 Elf64_Off e_phoff; /* Program header table file offset */ |
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217 Elf64_Off e_shoff; /* Section header table file offset */ |
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218 Elf64_Word e_flags; |
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219 Elf64_Half e_ehsize; |
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220 Elf64_Half e_phentsize; |
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221 Elf64_Half e_phnum; |
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222 Elf64_Half e_shentsize; |
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223 Elf64_Half e_shnum; |
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224 Elf64_Half e_shstrndx; |
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225 } Elf64_Ehdr; |
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226 |
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227 /* These constants define the permissions on sections in the program |
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228 header, p_flags. */ |
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229 #define PF_R 0x4 |
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230 #define PF_W 0x2 |
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231 #define PF_X 0x1 |
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232 |
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233 typedef struct elf32_phdr{ |
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234 Elf32_Word p_type; |
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235 Elf32_Off p_offset; |
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236 Elf32_Addr p_vaddr; |
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237 Elf32_Addr p_paddr; |
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238 Elf32_Word p_filesz; |
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239 Elf32_Word p_memsz; |
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240 Elf32_Word p_flags; |
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241 Elf32_Word p_align; |
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242 } Elf32_Phdr; |
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243 |
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244 typedef struct elf64_phdr { |
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245 Elf64_Word p_type; |
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246 Elf64_Word p_flags; |
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247 Elf64_Off p_offset; /* Segment file offset */ |
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248 Elf64_Addr p_vaddr; /* Segment virtual address */ |
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249 Elf64_Addr p_paddr; /* Segment physical address */ |
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250 Elf64_Xword p_filesz; /* Segment size in file */ |
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251 Elf64_Xword p_memsz; /* Segment size in memory */ |
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252 Elf64_Xword p_align; /* Segment alignment, file & memory */ |
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253 } Elf64_Phdr; |
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254 |
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255 /* sh_type */ |
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256 #define SHT_NULL 0 |
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257 #define SHT_PROGBITS 1 |
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258 #define SHT_SYMTAB 2 |
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259 #define SHT_STRTAB 3 |
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260 #define SHT_RELA 4 |
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261 #define SHT_HASH 5 |
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262 #define SHT_DYNAMIC 6 |
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263 #define SHT_NOTE 7 |
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264 #define SHT_NOBITS 8 |
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265 #define SHT_REL 9 |
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266 #define SHT_SHLIB 10 |
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267 #define SHT_DYNSYM 11 |
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268 #define SHT_NUM 12 |
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269 #define SHT_LOPROC 0x70000000 |
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270 #define SHT_HIPROC 0x7fffffff |
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271 #define SHT_LOUSER 0x80000000 |
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272 #define SHT_HIUSER 0xffffffff |
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273 |
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274 /* sh_flags */ |
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275 #define SHF_WRITE 0x1 |
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276 #define SHF_ALLOC 0x2 |
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277 #define SHF_EXECINSTR 0x4 |
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278 #define SHF_MASKPROC 0xf0000000 |
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279 |
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280 /* special section indexes */ |
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281 #define SHN_UNDEF 0 |
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282 #define SHN_LORESERVE 0xff00 |
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283 #define SHN_LOPROC 0xff00 |
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284 #define SHN_HIPROC 0xff1f |
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285 #define SHN_ABS 0xfff1 |
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286 #define SHN_COMMON 0xfff2 |
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287 #define SHN_HIRESERVE 0xffff |
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288 |
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289 typedef struct { |
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290 Elf32_Word sh_name; |
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291 Elf32_Word sh_type; |
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292 Elf32_Word sh_flags; |
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293 Elf32_Addr sh_addr; |
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294 Elf32_Off sh_offset; |
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295 Elf32_Word sh_size; |
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296 Elf32_Word sh_link; |
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297 Elf32_Word sh_info; |
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298 Elf32_Word sh_addralign; |
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299 Elf32_Word sh_entsize; |
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300 } Elf32_Shdr; |
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301 |
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302 typedef struct elf64_shdr { |
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303 Elf64_Word sh_name; /* Section name, index in string tbl */ |
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304 Elf64_Word sh_type; /* Type of section */ |
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305 Elf64_Xword sh_flags; /* Miscellaneous section attributes */ |
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306 Elf64_Addr sh_addr; /* Section virtual addr at execution */ |
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307 Elf64_Off sh_offset; /* Section file offset */ |
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308 Elf64_Xword sh_size; /* Size of section in bytes */ |
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309 Elf64_Word sh_link; /* Index of another section */ |
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310 Elf64_Word sh_info; /* Additional section information */ |
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311 Elf64_Xword sh_addralign; /* Section alignment */ |
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312 Elf64_Xword sh_entsize; /* Entry size if section holds table */ |
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313 } Elf64_Shdr; |
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314 |
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315 #define EI_MAG0 0 /* e_ident[] indexes */ |
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316 #define EI_MAG1 1 |
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317 #define EI_MAG2 2 |
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318 #define EI_MAG3 3 |
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319 #define EI_CLASS 4 |
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320 #define EI_DATA 5 |
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321 #define EI_VERSION 6 |
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322 #define EI_OSABI 7 |
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323 #define EI_PAD 8 |
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324 |
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325 #define ELFMAG0 0x7f /* EI_MAG */ |
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326 #define ELFMAG1 'E' |
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327 #define ELFMAG2 'L' |
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328 #define ELFMAG3 'F' |
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329 #define ELFMAG "\177ELF" |
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330 #define SELFMAG 4 |
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331 |
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332 #define ELFCLASSNONE 0 /* EI_CLASS */ |
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333 #define ELFCLASS32 1 |
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334 #define ELFCLASS64 2 |
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335 #define ELFCLASSNUM 3 |
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336 |
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337 #define ELFDATANONE 0 /* e_ident[EI_DATA] */ |
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338 #define ELFDATA2LSB 1 |
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339 #define ELFDATA2MSB 2 |
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340 |
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341 #define EV_NONE 0 /* e_version, EI_VERSION */ |
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342 #define EV_CURRENT 1 |
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343 #define EV_NUM 2 |
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344 |
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345 #define ELFOSABI_NONE 0 |
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346 #define ELFOSABI_LINUX 3 |
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347 |
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348 #ifndef ELF_OSABI |
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349 #define ELF_OSABI ELFOSABI_NONE |
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350 #endif |
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351 |
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352 /* Notes used in ET_CORE */ |
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353 #define NT_PRSTATUS 1 |
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354 #define NT_PRFPREG 2 |
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355 #define NT_PRPSINFO 3 |
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356 #define NT_TASKSTRUCT 4 |
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357 #define NT_AUXV 6 |
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358 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ |
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359 #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ |
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360 #define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */ |
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361 #define NT_PPC_VSX 0x102 /* PowerPC VSX registers */ |
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362 #define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ |
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363 #define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */ |
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364 |
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365 |
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366 /* Note header in a PT_NOTE section */ |
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367 typedef struct elf32_note { |
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368 Elf32_Word n_namesz; /* Name size */ |
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369 Elf32_Word n_descsz; /* Content size */ |
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370 Elf32_Word n_type; /* Content type */ |
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371 } Elf32_Nhdr; |
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372 |
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373 /* Note header in a PT_NOTE section */ |
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374 typedef struct elf64_note { |
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375 Elf64_Word n_namesz; /* Name size */ |
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376 Elf64_Word n_descsz; /* Content size */ |
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377 Elf64_Word n_type; /* Content type */ |
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378 } Elf64_Nhdr; |
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379 |
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380 #if ELF_CLASS == ELFCLASS32 |
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381 |
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382 extern Elf32_Dyn _DYNAMIC []; |
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383 #define elfhdr elf32_hdr |
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384 #define elf_phdr elf32_phdr |
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385 #define elf_note elf32_note |
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386 #define elf_addr_t Elf32_Off |
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387 |
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388 #else |
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389 |
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390 extern Elf64_Dyn _DYNAMIC []; |
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391 #define elfhdr elf64_hdr |
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392 #define elf_phdr elf64_phdr |
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393 #define elf_note elf64_note |
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394 #define elf_addr_t Elf64_Off |
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395 |
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396 #endif |
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397 |
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398 /* Optional callbacks to write extra ELF notes. */ |
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399 #ifndef ARCH_HAVE_EXTRA_ELF_NOTES |
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400 static inline int elf_coredump_extra_notes_size(void) { return 0; } |
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401 static inline int elf_coredump_extra_notes_write(struct file *file, |
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402 loff_t *foffset) { return 0; } |
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403 #else |
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404 extern int elf_coredump_extra_notes_size(void); |
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405 extern int elf_coredump_extra_notes_write(struct file *file, loff_t *foffset); |
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406 #endif |
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407 |
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408 #endif /* _LINUX_ELF_H */ |