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5197 | serge | 1 | /* BFD back-end data structures for ELF files. |
6324 | serge | 2 | Copyright (C) 1992-2015 Free Software Foundation, Inc. |
5197 | serge | 3 | Written by Cygnus Support. |
4 | |||
5 | This file is part of BFD, the Binary File Descriptor library. |
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6 | |||
7 | This program is free software; you can redistribute it and/or modify |
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8 | it under the terms of the GNU General Public License as published by |
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9 | the Free Software Foundation; either version 3 of the License, or |
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10 | (at your option) any later version. |
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11 | |||
12 | This program is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | GNU General Public License for more details. |
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16 | |||
17 | You should have received a copy of the GNU General Public License |
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18 | along with this program; if not, write to the Free Software |
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19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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20 | MA 02110-1301, USA. */ |
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21 | |||
22 | #ifndef _LIBELF_H_ |
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23 | #define _LIBELF_H_ 1 |
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24 | |||
25 | #include "elf/common.h" |
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26 | #include "elf/external.h" |
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27 | #include "elf/internal.h" |
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28 | #include "bfdlink.h" |
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29 | |||
6324 | serge | 30 | #ifdef __cplusplus |
31 | extern "C" { |
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32 | #endif |
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33 | |||
5197 | serge | 34 | /* The number of entries in a section is its size divided by the size |
35 | of a single entry. This is normally only applicable to reloc and |
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36 | symbol table sections. |
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37 | PR 9934: It is possible to have relocations that do not refer to |
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38 | symbols, thus it is also possible to have a relocation section in |
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39 | an object file, but no symbol table. */ |
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40 | #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0) |
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41 | |||
42 | /* If size isn't specified as 64 or 32, NAME macro should fail. */ |
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43 | #ifndef NAME |
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44 | #if ARCH_SIZE == 64 |
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45 | #define NAME(x, y) x ## 64 ## _ ## y |
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46 | #endif |
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47 | #if ARCH_SIZE == 32 |
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48 | #define NAME(x, y) x ## 32 ## _ ## y |
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49 | #endif |
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50 | #endif |
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51 | |||
52 | #ifndef NAME |
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53 | #define NAME(x, y) x ## NOSIZE ## _ ## y |
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54 | #endif |
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55 | |||
56 | #define ElfNAME(X) NAME(Elf,X) |
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57 | #define elfNAME(X) NAME(elf,X) |
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58 | |||
59 | /* Information held for an ELF symbol. The first field is the |
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60 | corresponding asymbol. Every symbol is an ELF file is actually a |
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61 | pointer to this structure, although it is often handled as a |
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62 | pointer to an asymbol. */ |
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63 | |||
64 | typedef struct |
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65 | { |
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66 | /* The BFD symbol. */ |
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67 | asymbol symbol; |
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68 | /* ELF symbol information. */ |
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69 | Elf_Internal_Sym internal_elf_sym; |
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70 | /* Backend specific information. */ |
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71 | union |
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72 | { |
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73 | unsigned int hppa_arg_reloc; |
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74 | void *mips_extr; |
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75 | void *any; |
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76 | } |
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77 | tc_data; |
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78 | |||
79 | /* Version information. This is from an Elf_Internal_Versym |
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80 | structure in a SHT_GNU_versym section. It is zero if there is no |
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81 | version information. */ |
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82 | unsigned short version; |
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83 | |||
84 | } elf_symbol_type; |
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85 | |||
86 | struct elf_strtab_hash; |
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87 | struct got_entry; |
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88 | struct plt_entry; |
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89 | |||
90 | union gotplt_union |
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91 | { |
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92 | bfd_signed_vma refcount; |
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93 | bfd_vma offset; |
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94 | struct got_entry *glist; |
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95 | struct plt_entry *plist; |
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96 | }; |
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97 | |||
98 | struct elf_link_virtual_table_entry |
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99 | { |
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100 | /* Virtual table entry use information. This array is nominally of size |
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101 | size/sizeof(target_void_pointer), though we have to be able to assume |
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102 | and track a size while the symbol is still undefined. It is indexed |
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103 | via offset/sizeof(target_void_pointer). */ |
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104 | size_t size; |
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105 | bfd_boolean *used; |
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106 | |||
107 | /* Virtual table derivation info. */ |
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108 | struct elf_link_hash_entry *parent; |
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109 | }; |
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110 | |||
6324 | serge | 111 | /* ELF symbol version. */ |
112 | enum elf_symbol_version |
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113 | { |
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114 | unknown = 0, |
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115 | unversioned, |
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116 | versioned, |
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117 | versioned_hidden |
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118 | }; |
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119 | |||
5197 | serge | 120 | /* ELF linker hash table entries. */ |
121 | |||
122 | struct elf_link_hash_entry |
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123 | { |
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124 | struct bfd_link_hash_entry root; |
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125 | |||
126 | /* Symbol index in output file. This is initialized to -1. It is |
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127 | set to -2 if the symbol is used by a reloc. */ |
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128 | long indx; |
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129 | |||
130 | /* Symbol index as a dynamic symbol. Initialized to -1, and remains |
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131 | -1 if this is not a dynamic symbol. */ |
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132 | /* ??? Note that this is consistently used as a synonym for tests |
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133 | against whether we can perform various simplifying transformations |
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134 | to the code. (E.g. changing a pc-relative jump to a PLT entry |
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135 | into a pc-relative jump to the target function.) That test, which |
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136 | is often relatively complex, and someplaces wrong or incomplete, |
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137 | should really be replaced by a predicate in elflink.c. |
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138 | |||
139 | End result: this field -1 does not indicate that the symbol is |
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140 | not in the dynamic symbol table, but rather that the symbol is |
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141 | not visible outside this DSO. */ |
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142 | long dynindx; |
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143 | |||
144 | /* If this symbol requires an entry in the global offset table, the |
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145 | processor specific backend uses this field to track usage and |
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146 | final offset. Two schemes are supported: The first assumes that |
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147 | a symbol may only have one GOT entry, and uses REFCOUNT until |
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148 | size_dynamic_sections, at which point the contents of the .got is |
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149 | fixed. Afterward, if OFFSET is -1, then the symbol does not |
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150 | require a global offset table entry. The second scheme allows |
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151 | multiple GOT entries per symbol, managed via a linked list |
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152 | pointed to by GLIST. */ |
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153 | union gotplt_union got; |
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154 | |||
155 | /* Same, but tracks a procedure linkage table entry. */ |
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156 | union gotplt_union plt; |
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157 | |||
158 | /* Symbol size. */ |
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159 | bfd_size_type size; |
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160 | |||
161 | /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */ |
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162 | unsigned int type : 8; |
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163 | |||
164 | /* Symbol st_other value, symbol visibility. */ |
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165 | unsigned int other : 8; |
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166 | |||
167 | /* The symbol's st_target_internal value (see Elf_Internal_Sym). */ |
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168 | unsigned int target_internal : 8; |
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169 | |||
170 | /* Symbol is referenced by a non-shared object (other than the object |
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171 | in which it is defined). */ |
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172 | unsigned int ref_regular : 1; |
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173 | /* Symbol is defined by a non-shared object. */ |
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174 | unsigned int def_regular : 1; |
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175 | /* Symbol is referenced by a shared object. */ |
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176 | unsigned int ref_dynamic : 1; |
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177 | /* Symbol is defined by a shared object. */ |
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178 | unsigned int def_dynamic : 1; |
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179 | /* Symbol has a non-weak reference from a non-shared object (other than |
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180 | the object in which it is defined). */ |
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181 | unsigned int ref_regular_nonweak : 1; |
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182 | /* Dynamic symbol has been adjustd. */ |
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183 | unsigned int dynamic_adjusted : 1; |
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184 | /* Symbol needs a copy reloc. */ |
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185 | unsigned int needs_copy : 1; |
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186 | /* Symbol needs a procedure linkage table entry. */ |
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187 | unsigned int needs_plt : 1; |
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188 | /* Symbol appears in a non-ELF input file. */ |
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189 | unsigned int non_elf : 1; |
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6324 | serge | 190 | /* Symbol version information. */ |
191 | ENUM_BITFIELD (elf_symbol_version) versioned : 2; |
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5197 | serge | 192 | /* Symbol was forced to local scope due to a version script file. */ |
193 | unsigned int forced_local : 1; |
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194 | /* Symbol was forced to be dynamic due to a version script file. */ |
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195 | unsigned int dynamic : 1; |
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196 | /* Symbol was marked during garbage collection. */ |
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197 | unsigned int mark : 1; |
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198 | /* Symbol is referenced by a non-GOT/non-PLT relocation. This is |
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199 | not currently set by all the backends. */ |
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200 | unsigned int non_got_ref : 1; |
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201 | /* Symbol has a definition in a shared object. |
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202 | FIXME: There is no real need for this field if def_dynamic is never |
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203 | cleared and all places that test def_dynamic also test def_regular. */ |
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204 | unsigned int dynamic_def : 1; |
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205 | /* Symbol has a non-weak reference from a shared object. */ |
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206 | unsigned int ref_dynamic_nonweak : 1; |
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207 | /* Symbol is referenced with a relocation where C/C++ pointer equality |
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208 | matters. */ |
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209 | unsigned int pointer_equality_needed : 1; |
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210 | /* Symbol is a unique global symbol. */ |
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211 | unsigned int unique_global : 1; |
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6324 | serge | 212 | /* Symbol is defined by a shared library with non-default visibility |
213 | in a read/write section. */ |
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214 | unsigned int protected_def : 1; |
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5197 | serge | 215 | |
216 | /* String table index in .dynstr if this is a dynamic symbol. */ |
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217 | unsigned long dynstr_index; |
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218 | |||
219 | union |
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220 | { |
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221 | /* If this is a weak defined symbol from a dynamic object, this |
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222 | field points to a defined symbol with the same value, if there is |
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223 | one. Otherwise it is NULL. */ |
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224 | struct elf_link_hash_entry *weakdef; |
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225 | |||
226 | /* Hash value of the name computed using the ELF hash function. |
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227 | Used part way through size_dynamic_sections, after we've finished |
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228 | with weakdefs. */ |
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229 | unsigned long elf_hash_value; |
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230 | } u; |
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231 | |||
232 | /* Version information. */ |
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233 | union |
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234 | { |
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235 | /* This field is used for a symbol which is not defined in a |
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236 | regular object. It points to the version information read in |
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237 | from the dynamic object. */ |
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238 | Elf_Internal_Verdef *verdef; |
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239 | /* This field is used for a symbol which is defined in a regular |
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240 | object. It is set up in size_dynamic_sections. It points to |
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241 | the version information we should write out for this symbol. */ |
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242 | struct bfd_elf_version_tree *vertree; |
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243 | } verinfo; |
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244 | |||
245 | struct elf_link_virtual_table_entry *vtable; |
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246 | }; |
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247 | |||
248 | /* Will references to this symbol always reference the symbol |
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249 | in this object? */ |
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250 | #define SYMBOL_REFERENCES_LOCAL(INFO, H) \ |
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251 | _bfd_elf_symbol_refs_local_p (H, INFO, 0) |
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252 | |||
253 | /* Will _calls_ to this symbol always call the version in this object? */ |
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254 | #define SYMBOL_CALLS_LOCAL(INFO, H) \ |
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255 | _bfd_elf_symbol_refs_local_p (H, INFO, 1) |
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256 | |||
257 | /* Common symbols that are turned into definitions don't have the |
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6324 | serge | 258 | DEF_REGULAR flag set, so they might appear to be undefined. |
259 | Symbols defined in linker scripts also don't have DEF_REGULAR set. */ |
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5197 | serge | 260 | #define ELF_COMMON_DEF_P(H) \ |
261 | (!(H)->def_regular \ |
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262 | && !(H)->def_dynamic \ |
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263 | && (H)->root.type == bfd_link_hash_defined) |
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264 | |||
265 | /* Records local symbols to be emitted in the dynamic symbol table. */ |
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266 | |||
267 | struct elf_link_local_dynamic_entry |
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268 | { |
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269 | struct elf_link_local_dynamic_entry *next; |
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270 | |||
271 | /* The input bfd this symbol came from. */ |
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272 | bfd *input_bfd; |
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273 | |||
274 | /* The index of the local symbol being copied. */ |
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275 | long input_indx; |
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276 | |||
277 | /* The index in the outgoing dynamic symbol table. */ |
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278 | long dynindx; |
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279 | |||
280 | /* A copy of the input symbol. */ |
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281 | Elf_Internal_Sym isym; |
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282 | }; |
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283 | |||
284 | struct elf_link_loaded_list |
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285 | { |
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286 | struct elf_link_loaded_list *next; |
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287 | bfd *abfd; |
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288 | }; |
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289 | |||
290 | /* Structures used by the eh_frame optimization code. */ |
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291 | struct eh_cie_fde |
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292 | { |
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293 | union { |
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294 | struct { |
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295 | /* If REMOVED == 1, this is the CIE that the FDE originally used. |
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296 | The CIE belongs to the same .eh_frame input section as the FDE. |
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297 | |||
298 | If REMOVED == 0, this is the CIE that we have chosen to use for |
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299 | the output FDE. The CIE's REMOVED field is also 0, but the CIE |
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6324 | serge | 300 | might belong to a different .eh_frame input section from the FDE. |
301 | |||
302 | May be NULL to signify that the FDE should be discarded. */ |
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5197 | serge | 303 | struct eh_cie_fde *cie_inf; |
304 | struct eh_cie_fde *next_for_section; |
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305 | } fde; |
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306 | struct { |
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307 | /* CIEs have three states: |
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308 | |||
309 | - REMOVED && !MERGED: Slated for removal because we haven't yet |
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310 | proven that an FDE needs it. FULL_CIE, if nonnull, points to |
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311 | more detailed information about the CIE. |
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312 | |||
313 | - REMOVED && MERGED: We have merged this CIE with MERGED_WITH, |
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314 | which may not belong to the same input section. |
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315 | |||
316 | - !REMOVED: We have decided to keep this CIE. SEC is the |
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317 | .eh_frame input section that contains the CIE. */ |
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318 | union { |
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319 | struct cie *full_cie; |
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320 | struct eh_cie_fde *merged_with; |
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321 | asection *sec; |
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322 | } u; |
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323 | |||
324 | /* The offset of the personality data from the start of the CIE, |
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325 | or 0 if the CIE doesn't have any. */ |
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326 | unsigned int personality_offset : 8; |
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327 | |||
328 | /* True if we have marked relocations associated with this CIE. */ |
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329 | unsigned int gc_mark : 1; |
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330 | |||
331 | /* True if we have decided to turn an absolute LSDA encoding into |
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332 | a PC-relative one. */ |
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333 | unsigned int make_lsda_relative : 1; |
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334 | |||
335 | /* True if we have decided to turn an absolute personality |
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336 | encoding into a PC-relative one. */ |
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337 | unsigned int make_per_encoding_relative : 1; |
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338 | |||
339 | /* True if the CIE contains personality data and if that |
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340 | data uses a PC-relative encoding. Always true when |
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341 | make_per_encoding_relative is. */ |
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342 | unsigned int per_encoding_relative : 1; |
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343 | |||
344 | /* True if we need to add an 'R' (FDE encoding) entry to the |
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345 | CIE's augmentation data. */ |
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346 | unsigned int add_fde_encoding : 1; |
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347 | |||
348 | /* True if we have merged this CIE with another. */ |
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349 | unsigned int merged : 1; |
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350 | |||
351 | /* Unused bits. */ |
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352 | unsigned int pad1 : 18; |
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353 | } cie; |
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354 | } u; |
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355 | unsigned int reloc_index; |
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356 | unsigned int size; |
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357 | unsigned int offset; |
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358 | unsigned int new_offset; |
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359 | unsigned int fde_encoding : 8; |
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360 | unsigned int lsda_encoding : 8; |
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361 | unsigned int lsda_offset : 8; |
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362 | |||
363 | /* True if this entry represents a CIE, false if it represents an FDE. */ |
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364 | unsigned int cie : 1; |
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365 | |||
366 | /* True if this entry is currently marked for removal. */ |
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367 | unsigned int removed : 1; |
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368 | |||
369 | /* True if we need to add a 'z' (augmentation size) entry to the CIE's |
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370 | augmentation data, and an associated byte to each of the CIE's FDEs. */ |
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371 | unsigned int add_augmentation_size : 1; |
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372 | |||
373 | /* True if we have decided to convert absolute FDE relocations into |
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374 | relative ones. This applies to the first relocation in the FDE, |
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375 | which is against the code that the FDE describes. */ |
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376 | unsigned int make_relative : 1; |
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377 | |||
378 | /* Unused bits. */ |
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379 | unsigned int pad1 : 4; |
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380 | |||
381 | unsigned int *set_loc; |
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382 | }; |
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383 | |||
384 | struct eh_frame_sec_info |
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385 | { |
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386 | unsigned int count; |
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387 | struct cie *cies; |
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388 | struct eh_cie_fde entry[1]; |
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389 | }; |
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390 | |||
391 | struct eh_frame_array_ent |
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392 | { |
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393 | bfd_vma initial_loc; |
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6324 | serge | 394 | bfd_size_type range; |
5197 | serge | 395 | bfd_vma fde; |
396 | }; |
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397 | |||
398 | struct htab; |
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399 | |||
6324 | serge | 400 | #define DWARF2_EH_HDR 1 |
401 | #define COMPACT_EH_HDR 2 |
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402 | |||
403 | /* Endian-neutral code indicating that a function cannot be unwound. */ |
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404 | #define COMPACT_EH_CANT_UNWIND_OPCODE 0x015d5d01 |
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405 | |||
406 | struct dwarf_eh_frame_hdr_info |
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5197 | serge | 407 | { |
408 | struct htab *cies; |
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6324 | serge | 409 | unsigned int fde_count; |
5197 | serge | 410 | /* TRUE if .eh_frame_hdr should contain the sorted search table. |
411 | We build it if we successfully read all .eh_frame input sections |
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412 | and recognize them. */ |
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413 | bfd_boolean table; |
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6324 | serge | 414 | struct eh_frame_array_ent *array; |
5197 | serge | 415 | }; |
416 | |||
6324 | serge | 417 | struct compact_eh_frame_hdr_info |
418 | { |
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419 | unsigned int allocated_entries; |
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420 | /* eh_frame_entry fragments. */ |
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421 | asection **entries; |
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422 | }; |
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423 | |||
424 | struct eh_frame_hdr_info |
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425 | { |
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426 | asection *hdr_sec; |
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427 | unsigned int array_count; |
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428 | bfd_boolean frame_hdr_is_compact; |
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429 | union |
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430 | { |
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431 | struct dwarf_eh_frame_hdr_info dwarf; |
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432 | struct compact_eh_frame_hdr_info compact; |
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433 | } |
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434 | u; |
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435 | }; |
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436 | |||
5197 | serge | 437 | /* Enum used to identify target specific extensions to the elf_obj_tdata |
438 | and elf_link_hash_table structures. Note the enums deliberately start |
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439 | from 1 so that we can detect an uninitialized field. The generic value |
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440 | is last so that additions to this enum do not need to modify more than |
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441 | one line. */ |
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442 | enum elf_target_id |
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443 | { |
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444 | AARCH64_ELF_DATA = 1, |
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445 | ALPHA_ELF_DATA, |
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446 | ARM_ELF_DATA, |
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447 | AVR_ELF_DATA, |
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448 | BFIN_ELF_DATA, |
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449 | CRIS_ELF_DATA, |
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450 | FRV_ELF_DATA, |
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451 | HPPA32_ELF_DATA, |
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452 | HPPA64_ELF_DATA, |
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453 | I386_ELF_DATA, |
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454 | IA64_ELF_DATA, |
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455 | LM32_ELF_DATA, |
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456 | M32R_ELF_DATA, |
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457 | M68HC11_ELF_DATA, |
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458 | M68K_ELF_DATA, |
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459 | METAG_ELF_DATA, |
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460 | MICROBLAZE_ELF_DATA, |
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461 | MIPS_ELF_DATA, |
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462 | MN10300_ELF_DATA, |
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6324 | serge | 463 | NDS32_ELF_DATA, |
5197 | serge | 464 | NIOS2_ELF_DATA, |
6324 | serge | 465 | OR1K_ELF_DATA, |
5197 | serge | 466 | PPC32_ELF_DATA, |
467 | PPC64_ELF_DATA, |
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468 | S390_ELF_DATA, |
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469 | SH_ELF_DATA, |
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470 | SPARC_ELF_DATA, |
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471 | SPU_ELF_DATA, |
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472 | TIC6X_ELF_DATA, |
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473 | X86_64_ELF_DATA, |
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474 | XTENSA_ELF_DATA, |
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475 | XGATE_ELF_DATA, |
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476 | TILEGX_ELF_DATA, |
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477 | TILEPRO_ELF_DATA, |
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478 | GENERIC_ELF_DATA |
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479 | }; |
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480 | |||
6324 | serge | 481 | struct elf_sym_strtab |
482 | { |
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483 | Elf_Internal_Sym sym; |
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484 | unsigned long dest_index; |
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485 | unsigned long destshndx_index; |
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486 | }; |
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487 | |||
5197 | serge | 488 | /* ELF linker hash table. */ |
489 | |||
490 | struct elf_link_hash_table |
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491 | { |
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492 | struct bfd_link_hash_table root; |
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493 | |||
494 | /* An identifier used to distinguish different target |
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495 | specific extensions to this structure. */ |
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496 | enum elf_target_id hash_table_id; |
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497 | |||
498 | /* Whether we have created the special dynamic sections required |
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499 | when linking against or generating a shared object. */ |
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500 | bfd_boolean dynamic_sections_created; |
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501 | |||
502 | /* True if this target has relocatable executables, so needs dynamic |
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503 | section symbols. */ |
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504 | bfd_boolean is_relocatable_executable; |
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505 | |||
506 | /* The BFD used to hold special sections created by the linker. |
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507 | This will be the first BFD found which requires these sections to |
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508 | be created. */ |
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509 | bfd *dynobj; |
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510 | |||
511 | /* The value to use when initialising got.refcount/offset and |
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512 | plt.refcount/offset in an elf_link_hash_entry. Set to zero when |
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513 | the values are refcounts. Set to init_got_offset/init_plt_offset |
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514 | in size_dynamic_sections when the values may be offsets. */ |
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515 | union gotplt_union init_got_refcount; |
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516 | union gotplt_union init_plt_refcount; |
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517 | |||
518 | /* The value to use for got.refcount/offset and plt.refcount/offset |
||
519 | when the values may be offsets. Normally (bfd_vma) -1. */ |
||
520 | union gotplt_union init_got_offset; |
||
521 | union gotplt_union init_plt_offset; |
||
522 | |||
523 | /* The number of symbols found in the link which must be put into |
||
524 | the .dynsym section. */ |
||
525 | bfd_size_type dynsymcount; |
||
526 | |||
527 | /* The string table of dynamic symbols, which becomes the .dynstr |
||
528 | section. */ |
||
529 | struct elf_strtab_hash *dynstr; |
||
530 | |||
6324 | serge | 531 | /* The number of symbol strings found in the link which must be put |
532 | into the .strtab section. */ |
||
533 | bfd_size_type strtabcount; |
||
534 | |||
535 | /* The array size of the symbol string table, which becomes the |
||
536 | .strtab section. */ |
||
537 | bfd_size_type strtabsize; |
||
538 | |||
539 | /* The array of strings, which becomes the .strtab section. */ |
||
540 | struct elf_sym_strtab *strtab; |
||
541 | |||
5197 | serge | 542 | /* The number of buckets in the hash table in the .hash section. |
543 | This is based on the number of dynamic symbols. */ |
||
544 | bfd_size_type bucketcount; |
||
545 | |||
546 | /* A linked list of DT_NEEDED names found in dynamic objects |
||
547 | included in the link. */ |
||
548 | struct bfd_link_needed_list *needed; |
||
549 | |||
550 | /* Sections in the output bfd that provides a section symbol |
||
551 | to be used by relocations emitted against local symbols. |
||
552 | Most targets will not use data_index_section. */ |
||
553 | asection *text_index_section; |
||
554 | asection *data_index_section; |
||
555 | |||
556 | /* The _GLOBAL_OFFSET_TABLE_ symbol. */ |
||
557 | struct elf_link_hash_entry *hgot; |
||
558 | |||
559 | /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */ |
||
560 | struct elf_link_hash_entry *hplt; |
||
561 | |||
562 | /* The _DYNAMIC symbol. */ |
||
563 | struct elf_link_hash_entry *hdynamic; |
||
564 | |||
565 | /* A pointer to information used to merge SEC_MERGE sections. */ |
||
566 | void *merge_info; |
||
567 | |||
568 | /* Used to link stabs in sections. */ |
||
569 | struct stab_info stab_info; |
||
570 | |||
571 | /* Used by eh_frame code when editing .eh_frame. */ |
||
572 | struct eh_frame_hdr_info eh_info; |
||
573 | |||
574 | /* A linked list of local symbols to be added to .dynsym. */ |
||
575 | struct elf_link_local_dynamic_entry *dynlocal; |
||
576 | |||
577 | /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic |
||
578 | objects included in the link. */ |
||
579 | struct bfd_link_needed_list *runpath; |
||
580 | |||
581 | /* Cached first output tls section and size of PT_TLS segment. */ |
||
582 | asection *tls_sec; |
||
583 | bfd_size_type tls_size; |
||
584 | |||
585 | /* A linked list of BFD's loaded in the link. */ |
||
586 | struct elf_link_loaded_list *loaded; |
||
587 | |||
588 | /* Short-cuts to get to dynamic linker sections. */ |
||
589 | asection *sgot; |
||
590 | asection *sgotplt; |
||
591 | asection *srelgot; |
||
592 | asection *splt; |
||
593 | asection *srelplt; |
||
594 | asection *igotplt; |
||
595 | asection *iplt; |
||
596 | asection *irelplt; |
||
597 | asection *irelifunc; |
||
6324 | serge | 598 | asection *dynsym; |
5197 | serge | 599 | }; |
600 | |||
601 | /* Look up an entry in an ELF linker hash table. */ |
||
602 | |||
603 | #define elf_link_hash_lookup(table, string, create, copy, follow) \ |
||
604 | ((struct elf_link_hash_entry *) \ |
||
605 | bfd_link_hash_lookup (&(table)->root, (string), (create), \ |
||
606 | (copy), (follow))) |
||
607 | |||
608 | /* Traverse an ELF linker hash table. */ |
||
609 | |||
610 | #define elf_link_hash_traverse(table, func, info) \ |
||
611 | (bfd_link_hash_traverse \ |
||
612 | (&(table)->root, \ |
||
613 | (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \ |
||
614 | (info))) |
||
615 | |||
616 | /* Get the ELF linker hash table from a link_info structure. */ |
||
617 | |||
618 | #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash)) |
||
619 | |||
620 | #define elf_hash_table_id(table) ((table) -> hash_table_id) |
||
621 | |||
622 | /* Returns TRUE if the hash table is a struct elf_link_hash_table. */ |
||
623 | #define is_elf_hash_table(htab) \ |
||
624 | (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table) |
||
625 | |||
626 | /* Used by bfd_sym_from_r_symndx to cache a small number of local |
||
627 | symbols. */ |
||
628 | #define LOCAL_SYM_CACHE_SIZE 32 |
||
629 | struct sym_cache |
||
630 | { |
||
631 | bfd *abfd; |
||
632 | unsigned long indx[LOCAL_SYM_CACHE_SIZE]; |
||
633 | Elf_Internal_Sym sym[LOCAL_SYM_CACHE_SIZE]; |
||
634 | }; |
||
635 | |||
636 | /* Constant information held for an ELF backend. */ |
||
637 | |||
638 | struct elf_size_info { |
||
639 | unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr; |
||
640 | unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note; |
||
641 | |||
642 | /* The size of entries in the .hash section. */ |
||
643 | unsigned char sizeof_hash_entry; |
||
644 | |||
645 | /* The number of internal relocations to allocate per external |
||
646 | relocation entry. */ |
||
647 | unsigned char int_rels_per_ext_rel; |
||
648 | /* We use some fixed size arrays. This should be large enough to |
||
649 | handle all back-ends. */ |
||
650 | #define MAX_INT_RELS_PER_EXT_REL 3 |
||
651 | |||
652 | unsigned char arch_size, log_file_align; |
||
653 | unsigned char elfclass, ev_current; |
||
654 | int (*write_out_phdrs) |
||
655 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
||
656 | bfd_boolean |
||
657 | (*write_shdrs_and_ehdr) (bfd *); |
||
658 | bfd_boolean (*checksum_contents) |
||
659 | (bfd * , void (*) (const void *, size_t, void *), void *); |
||
660 | void (*write_relocs) |
||
661 | (bfd *, asection *, void *); |
||
662 | bfd_boolean (*swap_symbol_in) |
||
663 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
||
664 | void (*swap_symbol_out) |
||
665 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
||
666 | bfd_boolean (*slurp_reloc_table) |
||
667 | (bfd *, asection *, asymbol **, bfd_boolean); |
||
668 | long (*slurp_symbol_table) |
||
669 | (bfd *, asymbol **, bfd_boolean); |
||
670 | void (*swap_dyn_in) |
||
671 | (bfd *, const void *, Elf_Internal_Dyn *); |
||
672 | void (*swap_dyn_out) |
||
673 | (bfd *, const Elf_Internal_Dyn *, void *); |
||
674 | |||
675 | /* This function is called to swap in a REL relocation. If an |
||
676 | external relocation corresponds to more than one internal |
||
677 | relocation, then all relocations are swapped in at once. */ |
||
678 | void (*swap_reloc_in) |
||
679 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
||
680 | |||
681 | /* This function is called to swap out a REL relocation. */ |
||
682 | void (*swap_reloc_out) |
||
683 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
||
684 | |||
685 | /* This function is called to swap in a RELA relocation. If an |
||
686 | external relocation corresponds to more than one internal |
||
687 | relocation, then all relocations are swapped in at once. */ |
||
688 | void (*swap_reloca_in) |
||
689 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
||
690 | |||
691 | /* This function is called to swap out a RELA relocation. */ |
||
692 | void (*swap_reloca_out) |
||
693 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
||
694 | }; |
||
695 | |||
696 | #define elf_symbol_from(ABFD,S) \ |
||
697 | (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \ |
||
698 | && (S)->the_bfd->tdata.elf_obj_data != 0) \ |
||
699 | ? (elf_symbol_type *) (S) \ |
||
700 | : 0) |
||
701 | |||
702 | enum elf_reloc_type_class { |
||
703 | reloc_class_normal, |
||
704 | reloc_class_relative, |
||
705 | reloc_class_plt, |
||
706 | reloc_class_copy, |
||
707 | reloc_class_ifunc |
||
708 | }; |
||
709 | |||
710 | struct elf_reloc_cookie |
||
711 | { |
||
712 | Elf_Internal_Rela *rels, *rel, *relend; |
||
713 | Elf_Internal_Sym *locsyms; |
||
714 | bfd *abfd; |
||
715 | size_t locsymcount; |
||
716 | size_t extsymoff; |
||
717 | struct elf_link_hash_entry **sym_hashes; |
||
718 | int r_sym_shift; |
||
719 | bfd_boolean bad_symtab; |
||
720 | }; |
||
721 | |||
722 | /* The level of IRIX compatibility we're striving for. */ |
||
723 | |||
724 | typedef enum { |
||
725 | ict_none, |
||
726 | ict_irix5, |
||
727 | ict_irix6 |
||
728 | } irix_compat_t; |
||
729 | |||
730 | /* Mapping of ELF section names and types. */ |
||
731 | struct bfd_elf_special_section |
||
732 | { |
||
733 | const char *prefix; |
||
734 | int prefix_length; |
||
735 | /* 0 means name must match PREFIX exactly. |
||
736 | -1 means name must start with PREFIX followed by an arbitrary string. |
||
737 | -2 means name must match PREFIX exactly or consist of PREFIX followed |
||
738 | by a dot then anything. |
||
739 | > 0 means name must start with the first PREFIX_LENGTH chars of |
||
740 | PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */ |
||
741 | int suffix_length; |
||
742 | int type; |
||
743 | bfd_vma attr; |
||
744 | }; |
||
745 | |||
746 | enum action_discarded |
||
747 | { |
||
748 | COMPLAIN = 1, |
||
749 | PRETEND = 2 |
||
750 | }; |
||
751 | |||
752 | typedef asection * (*elf_gc_mark_hook_fn) |
||
753 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
||
754 | struct elf_link_hash_entry *, Elf_Internal_Sym *); |
||
755 | |||
756 | struct elf_backend_data |
||
757 | { |
||
758 | /* The architecture for this backend. */ |
||
759 | enum bfd_architecture arch; |
||
760 | |||
761 | /* An identifier used to distinguish different target specific |
||
762 | extensions to elf_obj_tdata and elf_link_hash_table structures. */ |
||
763 | enum elf_target_id target_id; |
||
764 | |||
765 | /* The ELF machine code (EM_xxxx) for this backend. */ |
||
766 | int elf_machine_code; |
||
767 | |||
768 | /* EI_OSABI. */ |
||
769 | int elf_osabi; |
||
770 | |||
771 | /* The maximum page size for this backend. */ |
||
772 | bfd_vma maxpagesize; |
||
773 | |||
774 | /* The minimum page size for this backend. An input object will not be |
||
775 | considered page aligned unless its sections are correctly aligned for |
||
776 | pages at least this large. May be smaller than maxpagesize. */ |
||
777 | bfd_vma minpagesize; |
||
778 | |||
779 | /* The common page size for this backend. */ |
||
780 | bfd_vma commonpagesize; |
||
781 | |||
782 | /* The BFD flags applied to sections created for dynamic linking. */ |
||
783 | flagword dynamic_sec_flags; |
||
784 | |||
785 | /* Architecture-specific data for this backend. |
||
786 | This is actually a pointer to some type like struct elf_ARCH_data. */ |
||
787 | const void *arch_data; |
||
788 | |||
789 | /* A function to translate an ELF RELA relocation to a BFD arelent |
||
790 | structure. */ |
||
791 | void (*elf_info_to_howto) |
||
792 | (bfd *, arelent *, Elf_Internal_Rela *); |
||
793 | |||
794 | /* A function to translate an ELF REL relocation to a BFD arelent |
||
795 | structure. */ |
||
796 | void (*elf_info_to_howto_rel) |
||
797 | (bfd *, arelent *, Elf_Internal_Rela *); |
||
798 | |||
799 | /* A function to determine whether a symbol is global when |
||
800 | partitioning the symbol table into local and global symbols. |
||
801 | This should be NULL for most targets, in which case the correct |
||
802 | thing will be done. MIPS ELF, at least on the Irix 5, has |
||
803 | special requirements. */ |
||
804 | bfd_boolean (*elf_backend_sym_is_global) |
||
805 | (bfd *, asymbol *); |
||
806 | |||
807 | /* The remaining functions are hooks which are called only if they |
||
808 | are not NULL. */ |
||
809 | |||
810 | /* A function to permit a backend specific check on whether a |
||
811 | particular BFD format is relevant for an object file, and to |
||
812 | permit the backend to set any global information it wishes. When |
||
813 | this is called elf_elfheader is set, but anything else should be |
||
814 | used with caution. If this returns FALSE, the check_format |
||
815 | routine will return a bfd_error_wrong_format error. */ |
||
816 | bfd_boolean (*elf_backend_object_p) |
||
817 | (bfd *); |
||
818 | |||
819 | /* A function to do additional symbol processing when reading the |
||
820 | ELF symbol table. This is where any processor-specific special |
||
821 | section indices are handled. */ |
||
822 | void (*elf_backend_symbol_processing) |
||
823 | (bfd *, asymbol *); |
||
824 | |||
825 | /* A function to do additional symbol processing after reading the |
||
826 | entire ELF symbol table. */ |
||
827 | bfd_boolean (*elf_backend_symbol_table_processing) |
||
828 | (bfd *, elf_symbol_type *, unsigned int); |
||
829 | |||
830 | /* A function to set the type of the info field. Processor-specific |
||
831 | types should be handled here. */ |
||
832 | int (*elf_backend_get_symbol_type) |
||
833 | (Elf_Internal_Sym *, int); |
||
834 | |||
835 | /* A function to return the linker hash table entry of a symbol that |
||
836 | might be satisfied by an archive symbol. */ |
||
837 | struct elf_link_hash_entry * (*elf_backend_archive_symbol_lookup) |
||
838 | (bfd *, struct bfd_link_info *, const char *); |
||
839 | |||
840 | /* Return true if local section symbols should have a non-null st_name. |
||
841 | NULL implies false. */ |
||
842 | bfd_boolean (*elf_backend_name_local_section_symbols) |
||
843 | (bfd *); |
||
844 | |||
845 | /* A function to do additional processing on the ELF section header |
||
846 | just before writing it out. This is used to set the flags and |
||
847 | type fields for some sections, or to actually write out data for |
||
848 | unusual sections. */ |
||
849 | bfd_boolean (*elf_backend_section_processing) |
||
850 | (bfd *, Elf_Internal_Shdr *); |
||
851 | |||
852 | /* A function to handle unusual section types when creating BFD |
||
853 | sections from ELF sections. */ |
||
854 | bfd_boolean (*elf_backend_section_from_shdr) |
||
855 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
||
856 | |||
857 | /* A function to convert machine dependent ELF section header flags to |
||
858 | BFD internal section header flags. */ |
||
859 | bfd_boolean (*elf_backend_section_flags) |
||
860 | (flagword *, const Elf_Internal_Shdr *); |
||
861 | |||
862 | /* A function that returns a struct containing ELF section flags and |
||
863 | type for the given BFD section. */ |
||
864 | const struct bfd_elf_special_section * (*get_sec_type_attr) |
||
865 | (bfd *, asection *); |
||
866 | |||
867 | /* A function to handle unusual program segment types when creating BFD |
||
868 | sections from ELF program segments. */ |
||
869 | bfd_boolean (*elf_backend_section_from_phdr) |
||
870 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
||
871 | |||
872 | /* A function to set up the ELF section header for a BFD section in |
||
873 | preparation for writing it out. This is where the flags and type |
||
874 | fields are set for unusual sections. */ |
||
875 | bfd_boolean (*elf_backend_fake_sections) |
||
876 | (bfd *, Elf_Internal_Shdr *, asection *); |
||
877 | |||
878 | /* A function to get the ELF section index for a BFD section. If |
||
879 | this returns TRUE, the section was found. If it is a normal ELF |
||
880 | section, *RETVAL should be left unchanged. If it is not a normal |
||
881 | ELF section *RETVAL should be set to the SHN_xxxx index. */ |
||
882 | bfd_boolean (*elf_backend_section_from_bfd_section) |
||
883 | (bfd *, asection *, int *retval); |
||
884 | |||
885 | /* If this field is not NULL, it is called by the add_symbols phase |
||
886 | of a link just before adding a symbol to the global linker hash |
||
887 | table. It may modify any of the fields as it wishes. If *NAME |
||
888 | is set to NULL, the symbol will be skipped rather than being |
||
889 | added to the hash table. This function is responsible for |
||
890 | handling all processor dependent symbol bindings and section |
||
891 | indices, and must set at least *FLAGS and *SEC for each processor |
||
892 | dependent case; failure to do so will cause a link error. */ |
||
893 | bfd_boolean (*elf_add_symbol_hook) |
||
894 | (bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *, |
||
895 | const char **name, flagword *flags, asection **sec, bfd_vma *value); |
||
896 | |||
897 | /* If this field is not NULL, it is called by the elf_link_output_sym |
||
898 | phase of a link for each symbol which will appear in the object file. |
||
899 | On error, this function returns 0. 1 is returned when the symbol |
||
900 | should be output, 2 is returned when the symbol should be discarded. */ |
||
901 | int (*elf_backend_link_output_symbol_hook) |
||
902 | (struct bfd_link_info *info, const char *, Elf_Internal_Sym *, |
||
903 | asection *, struct elf_link_hash_entry *); |
||
904 | |||
905 | /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend |
||
906 | linker the first time it encounters a dynamic object in the link. |
||
907 | This function must create any sections required for dynamic |
||
908 | linking. The ABFD argument is a dynamic object. The .interp, |
||
909 | .dynamic, .dynsym, .dynstr, and .hash functions have already been |
||
910 | created, and this function may modify the section flags if |
||
911 | desired. This function will normally create the .got and .plt |
||
912 | sections, but different backends have different requirements. */ |
||
913 | bfd_boolean (*elf_backend_create_dynamic_sections) |
||
914 | (bfd *abfd, struct bfd_link_info *info); |
||
915 | |||
916 | /* When creating a shared library, determine whether to omit the |
||
917 | dynamic symbol for the section. */ |
||
918 | bfd_boolean (*elf_backend_omit_section_dynsym) |
||
919 | (bfd *output_bfd, struct bfd_link_info *info, asection *osec); |
||
920 | |||
921 | /* Return TRUE if relocations of targets are compatible to the extent |
||
922 | that CHECK_RELOCS will properly process them. PR 4424. */ |
||
923 | bfd_boolean (*relocs_compatible) (const bfd_target *, const bfd_target *); |
||
924 | |||
925 | /* The CHECK_RELOCS function is called by the add_symbols phase of |
||
926 | the ELF backend linker. It is called once for each section with |
||
927 | relocs of an object file, just after the symbols for the object |
||
928 | file have been added to the global linker hash table. The |
||
929 | function must look through the relocs and do any special handling |
||
930 | required. This generally means allocating space in the global |
||
931 | offset table, and perhaps allocating space for a reloc. The |
||
932 | relocs are always passed as Rela structures; if the section |
||
933 | actually uses Rel structures, the r_addend field will always be |
||
934 | zero. */ |
||
935 | bfd_boolean (*check_relocs) |
||
936 | (bfd *abfd, struct bfd_link_info *info, asection *o, |
||
937 | const Elf_Internal_Rela *relocs); |
||
938 | |||
939 | /* The CHECK_DIRECTIVES function is called once per input file by |
||
940 | the add_symbols phase of the ELF backend linker. The function |
||
941 | must inspect the bfd and create any additional symbols according |
||
942 | to any custom directives in the bfd. */ |
||
943 | bfd_boolean (*check_directives) |
||
944 | (bfd *abfd, struct bfd_link_info *info); |
||
945 | |||
946 | /* The NOTICE_AS_NEEDED function is called as the linker is about to |
||
947 | handle an as-needed lib (ACT = notice_as_needed), and after the |
||
948 | linker has decided to keep the lib (ACT = notice_needed) or when |
||
949 | the lib is not needed (ACT = notice_not_needed). */ |
||
950 | bfd_boolean (*notice_as_needed) |
||
951 | (bfd *abfd, struct bfd_link_info *info, enum notice_asneeded_action act); |
||
952 | |||
953 | /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend |
||
954 | linker for every symbol which is defined by a dynamic object and |
||
955 | referenced by a regular object. This is called after all the |
||
956 | input files have been seen, but before the SIZE_DYNAMIC_SECTIONS |
||
957 | function has been called. The hash table entry should be |
||
958 | bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be |
||
959 | defined in a section from a dynamic object. Dynamic object |
||
960 | sections are not included in the final link, and this function is |
||
961 | responsible for changing the value to something which the rest of |
||
962 | the link can deal with. This will normally involve adding an |
||
963 | entry to the .plt or .got or some such section, and setting the |
||
964 | symbol to point to that. */ |
||
965 | bfd_boolean (*elf_backend_adjust_dynamic_symbol) |
||
966 | (struct bfd_link_info *info, struct elf_link_hash_entry *h); |
||
967 | |||
968 | /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker |
||
969 | after all the linker input files have been seen but before the |
||
970 | section sizes have been set. This is called after |
||
971 | ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */ |
||
972 | bfd_boolean (*elf_backend_always_size_sections) |
||
973 | (bfd *output_bfd, struct bfd_link_info *info); |
||
974 | |||
975 | /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend |
||
976 | linker after all the linker input files have been seen but before |
||
977 | the sections sizes have been set. This is called after |
||
978 | ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols. |
||
979 | It is only called when linking against a dynamic object. It must |
||
980 | set the sizes of the dynamic sections, and may fill in their |
||
981 | contents as well. The generic ELF linker can handle the .dynsym, |
||
982 | .dynstr and .hash sections. This function must handle the |
||
983 | .interp section and any sections created by the |
||
984 | CREATE_DYNAMIC_SECTIONS entry point. */ |
||
985 | bfd_boolean (*elf_backend_size_dynamic_sections) |
||
986 | (bfd *output_bfd, struct bfd_link_info *info); |
||
987 | |||
988 | /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections |
||
989 | we keep to use as a base for relocs and symbols. */ |
||
990 | void (*elf_backend_init_index_section) |
||
991 | (bfd *output_bfd, struct bfd_link_info *info); |
||
992 | |||
993 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
||
994 | to handle the relocations for a section. |
||
995 | |||
996 | The relocs are always passed as Rela structures; if the section |
||
997 | actually uses Rel structures, the r_addend field will always be |
||
998 | zero. |
||
999 | |||
1000 | This function is responsible for adjust the section contents as |
||
1001 | necessary, and (if using Rela relocs and generating a |
||
1002 | relocatable output file) adjusting the reloc addend as |
||
1003 | necessary. |
||
1004 | |||
1005 | This function does not have to worry about setting the reloc |
||
1006 | address or the reloc symbol index. |
||
1007 | |||
1008 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
||
1009 | |||
1010 | LOCAL_SECTIONS is an array giving the section in the input file |
||
1011 | corresponding to the st_shndx field of each local symbol. |
||
1012 | |||
1013 | The global hash table entry for the global symbols can be found |
||
1014 | via elf_sym_hashes (input_bfd). |
||
1015 | |||
1016 | When generating relocatable output, this function must handle |
||
1017 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
||
1018 | going to be the section symbol corresponding to the output |
||
1019 | section, which means that the addend must be adjusted |
||
1020 | accordingly. |
||
1021 | |||
1022 | Returns FALSE on error, TRUE on success, 2 if successful and |
||
1023 | relocations should be written for this section. */ |
||
1024 | int (*elf_backend_relocate_section) |
||
1025 | (bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd, |
||
1026 | asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs, |
||
1027 | Elf_Internal_Sym *local_syms, asection **local_sections); |
||
1028 | |||
1029 | /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend |
||
1030 | linker just before it writes a symbol out to the .dynsym section. |
||
1031 | The processor backend may make any required adjustment to the |
||
1032 | symbol. It may also take the opportunity to set contents of the |
||
1033 | dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on |
||
1034 | all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called |
||
1035 | on those symbols which are defined by a dynamic object. */ |
||
1036 | bfd_boolean (*elf_backend_finish_dynamic_symbol) |
||
1037 | (bfd *output_bfd, struct bfd_link_info *info, |
||
1038 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym); |
||
1039 | |||
1040 | /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend |
||
1041 | linker just before it writes all the dynamic sections out to the |
||
1042 | output file. The FINISH_DYNAMIC_SYMBOL will have been called on |
||
1043 | all dynamic symbols. */ |
||
1044 | bfd_boolean (*elf_backend_finish_dynamic_sections) |
||
1045 | (bfd *output_bfd, struct bfd_link_info *info); |
||
1046 | |||
1047 | /* A function to do any beginning processing needed for the ELF file |
||
1048 | before building the ELF headers and computing file positions. */ |
||
1049 | void (*elf_backend_begin_write_processing) |
||
1050 | (bfd *, struct bfd_link_info *); |
||
1051 | |||
1052 | /* A function to do any final processing needed for the ELF file |
||
1053 | before writing it out. The LINKER argument is TRUE if this BFD |
||
1054 | was created by the ELF backend linker. */ |
||
1055 | void (*elf_backend_final_write_processing) |
||
1056 | (bfd *, bfd_boolean linker); |
||
1057 | |||
1058 | /* This function is called by get_program_header_size. It should |
||
1059 | return the number of additional program segments which this BFD |
||
1060 | will need. It should return -1 on error. */ |
||
1061 | int (*elf_backend_additional_program_headers) |
||
1062 | (bfd *, struct bfd_link_info *); |
||
1063 | |||
1064 | /* This function is called to modify an existing segment map in a |
||
1065 | backend specific fashion. */ |
||
1066 | bfd_boolean (*elf_backend_modify_segment_map) |
||
1067 | (bfd *, struct bfd_link_info *); |
||
1068 | |||
1069 | /* This function is called to modify program headers just before |
||
1070 | they are written. */ |
||
1071 | bfd_boolean (*elf_backend_modify_program_headers) |
||
1072 | (bfd *, struct bfd_link_info *); |
||
1073 | |||
1074 | /* This function is called before section garbage collection to |
||
1075 | mark entry symbol sections. */ |
||
1076 | void (*gc_keep) |
||
1077 | (struct bfd_link_info *); |
||
1078 | |||
1079 | /* This function is called during section garbage collection to |
||
1080 | mark sections that define global symbols. */ |
||
1081 | bfd_boolean (*gc_mark_dynamic_ref) |
||
1082 | (struct elf_link_hash_entry *, void *); |
||
1083 | |||
1084 | /* This function is called during section gc to discover the section a |
||
1085 | particular relocation refers to. */ |
||
1086 | elf_gc_mark_hook_fn gc_mark_hook; |
||
1087 | |||
1088 | /* This function, if defined, is called after the first gc marking pass |
||
1089 | to allow the backend to mark additional sections. */ |
||
1090 | bfd_boolean (*gc_mark_extra_sections) |
||
1091 | (struct bfd_link_info *, elf_gc_mark_hook_fn); |
||
1092 | |||
1093 | /* This function, if defined, is called during the sweep phase of gc |
||
1094 | in order that a backend might update any data structures it might |
||
1095 | be maintaining. */ |
||
1096 | bfd_boolean (*gc_sweep_hook) |
||
1097 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); |
||
1098 | |||
1099 | /* This function, if defined, is called after the ELF headers have |
||
1100 | been created. This allows for things like the OS and ABI versions |
||
1101 | to be changed. */ |
||
1102 | void (*elf_backend_post_process_headers) |
||
1103 | (bfd *, struct bfd_link_info *); |
||
1104 | |||
1105 | /* This function, if defined, prints a symbol to file and returns the |
||
1106 | name of the symbol to be printed. It should return NULL to fall |
||
1107 | back to default symbol printing. */ |
||
1108 | const char *(*elf_backend_print_symbol_all) |
||
1109 | (bfd *, void *, asymbol *); |
||
1110 | |||
1111 | /* This function, if defined, is called after all local symbols and |
||
1112 | global symbols converted to locals are emitted into the symtab |
||
1113 | section. It allows the backend to emit special local symbols |
||
1114 | not handled in the hash table. */ |
||
1115 | bfd_boolean (*elf_backend_output_arch_local_syms) |
||
1116 | (bfd *, struct bfd_link_info *, void *, |
||
1117 | bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *, |
||
1118 | struct elf_link_hash_entry *)); |
||
1119 | |||
1120 | /* This function, if defined, is called after all symbols are emitted |
||
1121 | into the symtab section. It allows the backend to emit special |
||
1122 | global symbols not handled in the hash table. */ |
||
1123 | bfd_boolean (*elf_backend_output_arch_syms) |
||
1124 | (bfd *, struct bfd_link_info *, void *, |
||
1125 | bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *, |
||
1126 | struct elf_link_hash_entry *)); |
||
1127 | |||
1128 | /* Copy any information related to dynamic linking from a pre-existing |
||
1129 | symbol to a newly created symbol. Also called to copy flags and |
||
1130 | other back-end info to a weakdef, in which case the symbol is not |
||
1131 | newly created and plt/got refcounts and dynamic indices should not |
||
1132 | be copied. */ |
||
1133 | void (*elf_backend_copy_indirect_symbol) |
||
1134 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
||
1135 | struct elf_link_hash_entry *); |
||
1136 | |||
1137 | /* Modify any information related to dynamic linking such that the |
||
1138 | symbol is not exported. */ |
||
1139 | void (*elf_backend_hide_symbol) |
||
1140 | (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
||
1141 | |||
1142 | /* A function to do additional symbol fixup, called by |
||
1143 | _bfd_elf_fix_symbol_flags. */ |
||
1144 | bfd_boolean (*elf_backend_fixup_symbol) |
||
1145 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
||
1146 | |||
1147 | /* Merge the backend specific symbol attribute. */ |
||
1148 | void (*elf_backend_merge_symbol_attribute) |
||
1149 | (struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean, |
||
1150 | bfd_boolean); |
||
1151 | |||
1152 | /* This function, if defined, will return a string containing the |
||
1153 | name of a target-specific dynamic tag. */ |
||
1154 | char *(*elf_backend_get_target_dtag) |
||
1155 | (bfd_vma); |
||
1156 | |||
1157 | /* Decide whether an undefined symbol is special and can be ignored. |
||
1158 | This is the case for OPTIONAL symbols on IRIX. */ |
||
1159 | bfd_boolean (*elf_backend_ignore_undef_symbol) |
||
1160 | (struct elf_link_hash_entry *); |
||
1161 | |||
1162 | /* Emit relocations. Overrides default routine for emitting relocs, |
||
1163 | except during a relocatable link, or if all relocs are being emitted. */ |
||
1164 | bfd_boolean (*elf_backend_emit_relocs) |
||
1165 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
||
1166 | struct elf_link_hash_entry **); |
||
1167 | |||
1168 | /* Count relocations. Not called for relocatable links |
||
1169 | or if all relocs are being preserved in the output. */ |
||
1170 | unsigned int (*elf_backend_count_relocs) |
||
1171 | (struct bfd_link_info *, asection *); |
||
1172 | |||
6324 | serge | 1173 | /* Say whether to sort relocs output by ld -r and ld --emit-relocs, |
1174 | by r_offset. If NULL, default to true. */ |
||
1175 | bfd_boolean (*sort_relocs_p) |
||
1176 | (asection *); |
||
1177 | |||
5197 | serge | 1178 | /* This function, if defined, is called when an NT_PRSTATUS note is found |
1179 | in a core file. */ |
||
1180 | bfd_boolean (*elf_backend_grok_prstatus) |
||
1181 | (bfd *, Elf_Internal_Note *); |
||
1182 | |||
1183 | /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO |
||
1184 | note is found in a core file. */ |
||
1185 | bfd_boolean (*elf_backend_grok_psinfo) |
||
1186 | (bfd *, Elf_Internal_Note *); |
||
1187 | |||
1188 | /* This function, if defined, is called to write a note to a corefile. */ |
||
1189 | char *(*elf_backend_write_core_note) |
||
1190 | (bfd *abfd, char *buf, int *bufsiz, int note_type, ...); |
||
1191 | |||
1192 | /* This function, if defined, is called to convert target-specific |
||
1193 | section flag names into hex values. */ |
||
1194 | flagword (*elf_backend_lookup_section_flags_hook) |
||
1195 | (char *); |
||
1196 | |||
1197 | /* This function returns class of a reloc type. */ |
||
1198 | enum elf_reloc_type_class (*elf_backend_reloc_type_class) |
||
1199 | (const struct bfd_link_info *, const asection *, const Elf_Internal_Rela *); |
||
1200 | |||
1201 | /* This function, if defined, removes information about discarded functions |
||
1202 | from other sections which mention them. */ |
||
1203 | bfd_boolean (*elf_backend_discard_info) |
||
1204 | (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *); |
||
1205 | |||
1206 | /* This function, if defined, signals that the function above has removed |
||
1207 | the discarded relocations for this section. */ |
||
1208 | bfd_boolean (*elf_backend_ignore_discarded_relocs) |
||
1209 | (asection *); |
||
1210 | |||
1211 | /* What to do when ld finds relocations against symbols defined in |
||
1212 | discarded sections. */ |
||
1213 | unsigned int (*action_discarded) |
||
1214 | (asection *); |
||
1215 | |||
1216 | /* This function returns the width of FDE pointers in bytes, or 0 if |
||
1217 | that can't be determined for some reason. The default definition |
||
1218 | goes by the bfd's EI_CLASS. */ |
||
1219 | unsigned int (*elf_backend_eh_frame_address_size) |
||
1220 | (bfd *, asection *); |
||
1221 | |||
1222 | /* These functions tell elf-eh-frame whether to attempt to turn |
||
1223 | absolute or lsda encodings into pc-relative ones. The default |
||
1224 | definition enables these transformations. */ |
||
1225 | bfd_boolean (*elf_backend_can_make_relative_eh_frame) |
||
1226 | (bfd *, struct bfd_link_info *, asection *); |
||
1227 | bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame) |
||
1228 | (bfd *, struct bfd_link_info *, asection *); |
||
1229 | |||
1230 | /* This function returns an encoding after computing the encoded |
||
1231 | value (and storing it in ENCODED) for the given OFFSET into OSEC, |
||
1232 | to be stored in at LOC_OFFSET into the LOC_SEC input section. |
||
1233 | The default definition chooses a 32-bit PC-relative encoding. */ |
||
1234 | bfd_byte (*elf_backend_encode_eh_address) |
||
1235 | (bfd *abfd, struct bfd_link_info *info, |
||
1236 | asection *osec, bfd_vma offset, |
||
1237 | asection *loc_sec, bfd_vma loc_offset, |
||
1238 | bfd_vma *encoded); |
||
1239 | |||
1240 | /* This function, if defined, may write out the given section. |
||
1241 | Returns TRUE if it did so and FALSE if the caller should. */ |
||
1242 | bfd_boolean (*elf_backend_write_section) |
||
1243 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
||
1244 | |||
1245 | /* The level of IRIX compatibility we're striving for. |
||
1246 | MIPS ELF specific function. */ |
||
1247 | irix_compat_t (*elf_backend_mips_irix_compat) |
||
1248 | (bfd *); |
||
1249 | |||
1250 | reloc_howto_type *(*elf_backend_mips_rtype_to_howto) |
||
1251 | (unsigned int, bfd_boolean); |
||
1252 | |||
1253 | /* The swapping table to use when dealing with ECOFF information. |
||
1254 | Used for the MIPS ELF .mdebug section. */ |
||
1255 | const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap; |
||
1256 | |||
1257 | /* This function implements `bfd_elf_bfd_from_remote_memory'; |
||
1258 | see elf.c, elfcode.h. */ |
||
1259 | bfd *(*elf_backend_bfd_from_remote_memory) |
||
6324 | serge | 1260 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
5197 | serge | 1261 | int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr, |
1262 | bfd_size_type len)); |
||
1263 | |||
1264 | /* This function is used by `_bfd_elf_get_synthetic_symtab'; |
||
1265 | see elf.c. */ |
||
1266 | bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *); |
||
1267 | |||
1268 | /* Is symbol defined in common section? */ |
||
1269 | bfd_boolean (*common_definition) (Elf_Internal_Sym *); |
||
1270 | |||
1271 | /* Return a common section index for section. */ |
||
1272 | unsigned int (*common_section_index) (asection *); |
||
1273 | |||
1274 | /* Return a common section for section. */ |
||
1275 | asection *(*common_section) (asection *); |
||
1276 | |||
1277 | /* Return TRUE if we can merge 2 definitions. */ |
||
1278 | bfd_boolean (*merge_symbol) (struct elf_link_hash_entry *, |
||
1279 | const Elf_Internal_Sym *, asection **, |
||
1280 | bfd_boolean, bfd_boolean, |
||
1281 | bfd *, const asection *); |
||
1282 | |||
1283 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
||
1284 | bfd_boolean (*elf_hash_symbol) (struct elf_link_hash_entry *); |
||
1285 | |||
1286 | /* Return TRUE if type is a function symbol type. */ |
||
1287 | bfd_boolean (*is_function_type) (unsigned int type); |
||
1288 | |||
1289 | /* If the ELF symbol SYM might be a function in SEC, return the |
||
1290 | function size and set *CODE_OFF to the function's entry point, |
||
1291 | otherwise return zero. */ |
||
1292 | bfd_size_type (*maybe_function_sym) (const asymbol *sym, asection *sec, |
||
1293 | bfd_vma *code_off); |
||
1294 | |||
6324 | serge | 1295 | /* Return the section which RELOC_SEC applies to. */ |
1296 | asection *(*get_reloc_section) (asection *reloc_sec); |
||
1297 | |||
5197 | serge | 1298 | /* Used to handle bad SHF_LINK_ORDER input. */ |
1299 | bfd_error_handler_type link_order_error_handler; |
||
1300 | |||
1301 | /* Name of the PLT relocation section. */ |
||
1302 | const char *relplt_name; |
||
1303 | |||
1304 | /* Alternate EM_xxxx machine codes for this backend. */ |
||
1305 | int elf_machine_alt1; |
||
1306 | int elf_machine_alt2; |
||
1307 | |||
1308 | const struct elf_size_info *s; |
||
1309 | |||
1310 | /* An array of target specific special sections. */ |
||
1311 | const struct bfd_elf_special_section *special_sections; |
||
1312 | |||
1313 | /* The size in bytes of the header for the GOT. This includes the |
||
1314 | so-called reserved entries on some systems. */ |
||
1315 | bfd_vma got_header_size; |
||
1316 | |||
1317 | /* The size of the GOT entry for the symbol pointed to by H if non-NULL, |
||
1318 | otherwise by the local symbol with index SYMNDX in IBFD. */ |
||
1319 | bfd_vma (*got_elt_size) (bfd *, struct bfd_link_info *, |
||
1320 | struct elf_link_hash_entry *h, |
||
1321 | bfd *ibfd, unsigned long symndx); |
||
1322 | |||
1323 | /* The vendor name to use for a processor-standard attributes section. */ |
||
1324 | const char *obj_attrs_vendor; |
||
1325 | |||
1326 | /* The section name to use for a processor-standard attributes section. */ |
||
1327 | const char *obj_attrs_section; |
||
1328 | |||
1329 | /* Return 1, 2 or 3 to indicate what type of arguments a |
||
1330 | processor-specific tag takes. */ |
||
1331 | int (*obj_attrs_arg_type) (int); |
||
1332 | |||
1333 | /* The section type to use for an attributes section. */ |
||
1334 | unsigned int obj_attrs_section_type; |
||
1335 | |||
1336 | /* This function determines the order in which any attributes are |
||
1337 | written. It must be defined for input in the range |
||
1338 | LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range |
||
1339 | is used in order to make unity easy). The returned value is the |
||
1340 | actual tag number to place in the input position. */ |
||
1341 | int (*obj_attrs_order) (int); |
||
1342 | |||
1343 | /* Handle merging unknown attributes; either warn and return TRUE, |
||
1344 | or give an error and return FALSE. */ |
||
1345 | bfd_boolean (*obj_attrs_handle_unknown) (bfd *, int); |
||
1346 | |||
6324 | serge | 1347 | /* Encoding used for compact EH tables. */ |
1348 | int (*compact_eh_encoding) (struct bfd_link_info *); |
||
1349 | |||
1350 | /* Opcode representing no unwind. */ |
||
1351 | int (*cant_unwind_opcode) (struct bfd_link_info *); |
||
1352 | |||
5197 | serge | 1353 | /* This is non-zero if static TLS segments require a special alignment. */ |
1354 | unsigned static_tls_alignment; |
||
1355 | |||
1356 | /* Alignment for the PT_GNU_STACK segment. */ |
||
1357 | unsigned stack_align; |
||
1358 | |||
1359 | /* This is TRUE if the linker should act like collect and gather |
||
1360 | global constructors and destructors by name. This is TRUE for |
||
1361 | MIPS ELF because the Irix 5 tools can not handle the .init |
||
1362 | section. */ |
||
1363 | unsigned collect : 1; |
||
1364 | |||
1365 | /* This is TRUE if the linker should ignore changes to the type of a |
||
1366 | symbol. This is TRUE for MIPS ELF because some Irix 5 objects |
||
1367 | record undefined functions as STT_OBJECT although the definitions |
||
1368 | are STT_FUNC. */ |
||
1369 | unsigned type_change_ok : 1; |
||
1370 | |||
1371 | /* Whether the backend may use REL relocations. (Some backends use |
||
1372 | both REL and RELA relocations, and this flag is set for those |
||
1373 | backends.) */ |
||
1374 | unsigned may_use_rel_p : 1; |
||
1375 | |||
1376 | /* Whether the backend may use RELA relocations. (Some backends use |
||
1377 | both REL and RELA relocations, and this flag is set for those |
||
1378 | backends.) */ |
||
1379 | unsigned may_use_rela_p : 1; |
||
1380 | |||
1381 | /* Whether the default relocation type is RELA. If a backend with |
||
1382 | this flag set wants REL relocations for a particular section, |
||
1383 | it must note that explicitly. Similarly, if this flag is clear, |
||
1384 | and the backend wants RELA relocations for a particular |
||
1385 | section. */ |
||
1386 | unsigned default_use_rela_p : 1; |
||
1387 | |||
1388 | /* True if PLT and copy relocations should be RELA by default. */ |
||
1389 | unsigned rela_plts_and_copies_p : 1; |
||
1390 | |||
1391 | /* Set if RELA relocations for a relocatable link can be handled by |
||
1392 | generic code. Backends that set this flag need do nothing in the |
||
1393 | backend relocate_section routine for relocatable linking. */ |
||
1394 | unsigned rela_normal : 1; |
||
1395 | |||
1396 | /* TRUE if addresses "naturally" sign extend. This is used when |
||
1397 | swapping in from Elf32 when BFD64. */ |
||
1398 | unsigned sign_extend_vma : 1; |
||
1399 | |||
1400 | unsigned want_got_plt : 1; |
||
1401 | unsigned plt_readonly : 1; |
||
1402 | unsigned want_plt_sym : 1; |
||
1403 | unsigned plt_not_loaded : 1; |
||
1404 | unsigned plt_alignment : 4; |
||
1405 | unsigned can_gc_sections : 1; |
||
1406 | unsigned can_refcount : 1; |
||
1407 | unsigned want_got_sym : 1; |
||
1408 | unsigned want_dynbss : 1; |
||
1409 | |||
1410 | /* Targets which do not support physical addressing often require |
||
1411 | that the p_paddr field in the section header to be set to zero. |
||
1412 | This field indicates whether this behavior is required. */ |
||
1413 | unsigned want_p_paddr_set_to_zero : 1; |
||
1414 | |||
1415 | /* True if an object file lacking a .note.GNU-stack section |
||
1416 | should be assumed to be requesting exec stack. At least one |
||
1417 | other file in the link needs to have a .note.GNU-stack section |
||
1418 | for a PT_GNU_STACK segment to be created. */ |
||
1419 | unsigned default_execstack : 1; |
||
6324 | serge | 1420 | |
1421 | /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize |
||
1422 | in length rather than sec->size in length, if sec->rawsize is |
||
1423 | non-zero and smaller than sec->size. */ |
||
1424 | unsigned caches_rawsize : 1; |
||
1425 | |||
1426 | /* Address of protected data defined in the shared library may be |
||
1427 | external, i.e., due to copy relocation. */ |
||
1428 | unsigned extern_protected_data : 1; |
||
5197 | serge | 1429 | }; |
1430 | |||
1431 | /* Information about reloc sections associated with a bfd_elf_section_data |
||
1432 | structure. */ |
||
1433 | struct bfd_elf_section_reloc_data |
||
1434 | { |
||
1435 | /* The ELF header for the reloc section associated with this |
||
1436 | section, if any. */ |
||
1437 | Elf_Internal_Shdr *hdr; |
||
1438 | /* The number of relocations currently assigned to HDR. */ |
||
1439 | unsigned int count; |
||
1440 | /* The ELF section number of the reloc section. Only used for an |
||
1441 | output file. */ |
||
1442 | int idx; |
||
1443 | /* Used by the backend linker to store the symbol hash table entries |
||
1444 | associated with relocs against global symbols. */ |
||
1445 | struct elf_link_hash_entry **hashes; |
||
1446 | }; |
||
1447 | |||
1448 | /* Information stored for each BFD section in an ELF file. This |
||
1449 | structure is allocated by elf_new_section_hook. */ |
||
1450 | |||
1451 | struct bfd_elf_section_data |
||
1452 | { |
||
1453 | /* The ELF header for this section. */ |
||
1454 | Elf_Internal_Shdr this_hdr; |
||
1455 | |||
1456 | /* INPUT_SECTION_FLAGS if specified in the linker script. */ |
||
1457 | struct flag_info *section_flag_info; |
||
1458 | |||
1459 | /* Information about the REL and RELA reloc sections associated |
||
1460 | with this section, if any. */ |
||
1461 | struct bfd_elf_section_reloc_data rel, rela; |
||
1462 | |||
1463 | /* The ELF section number of this section. */ |
||
1464 | int this_idx; |
||
1465 | |||
1466 | /* Used by the backend linker when generating a shared library to |
||
1467 | record the dynamic symbol index for a section symbol |
||
1468 | corresponding to this section. A value of 0 means that there is |
||
1469 | no dynamic symbol for this section. */ |
||
1470 | int dynindx; |
||
1471 | |||
1472 | /* A pointer to the linked-to section for SHF_LINK_ORDER. */ |
||
1473 | asection *linked_to; |
||
1474 | |||
1475 | /* A pointer to the swapped relocs. If the section uses REL relocs, |
||
1476 | rather than RELA, all the r_addend fields will be zero. This |
||
1477 | pointer may be NULL. It is used by the backend linker. */ |
||
1478 | Elf_Internal_Rela *relocs; |
||
1479 | |||
1480 | /* A pointer to a linked list tracking dynamic relocs copied for |
||
1481 | local symbols. */ |
||
1482 | void *local_dynrel; |
||
1483 | |||
1484 | /* A pointer to the bfd section used for dynamic relocs. */ |
||
1485 | asection *sreloc; |
||
1486 | |||
1487 | union { |
||
1488 | /* Group name, if this section is a member of a group. */ |
||
1489 | const char *name; |
||
1490 | |||
1491 | /* Group signature sym, if this is the SHT_GROUP section. */ |
||
1492 | struct bfd_symbol *id; |
||
1493 | } group; |
||
1494 | |||
1495 | /* For a member of a group, points to the SHT_GROUP section. |
||
1496 | NULL for the SHT_GROUP section itself and non-group sections. */ |
||
1497 | asection *sec_group; |
||
1498 | |||
1499 | /* A linked list of member sections in the group. Circular when used by |
||
1500 | the linker. For the SHT_GROUP section, points at first member. */ |
||
1501 | asection *next_in_group; |
||
1502 | |||
1503 | /* The FDEs associated with this section. The u.fde.next_in_section |
||
1504 | field acts as a chain pointer. */ |
||
1505 | struct eh_cie_fde *fde_list; |
||
1506 | |||
6324 | serge | 1507 | /* Link from a text section to its .eh_frame_entry section. */ |
1508 | asection *eh_frame_entry; |
||
1509 | |||
5197 | serge | 1510 | /* A pointer used for various section optimizations. */ |
1511 | void *sec_info; |
||
1512 | }; |
||
1513 | |||
1514 | #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd) |
||
1515 | #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to) |
||
1516 | #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type) |
||
1517 | #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags) |
||
1518 | #define elf_group_name(sec) (elf_section_data(sec)->group.name) |
||
1519 | #define elf_group_id(sec) (elf_section_data(sec)->group.id) |
||
1520 | #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group) |
||
1521 | #define elf_fde_list(sec) (elf_section_data(sec)->fde_list) |
||
1522 | #define elf_sec_group(sec) (elf_section_data(sec)->sec_group) |
||
6324 | serge | 1523 | #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry) |
5197 | serge | 1524 | |
1525 | #define xvec_get_elf_backend_data(xvec) \ |
||
1526 | ((const struct elf_backend_data *) (xvec)->backend_data) |
||
1527 | |||
1528 | #define get_elf_backend_data(abfd) \ |
||
1529 | xvec_get_elf_backend_data ((abfd)->xvec) |
||
1530 | |||
1531 | /* The least object attributes (within an attributes subsection) known |
||
1532 | for any target. Some code assumes that the value 0 is not used and |
||
1533 | the field for that attribute can instead be used as a marker to |
||
1534 | indicate that attributes have been initialized. */ |
||
1535 | #define LEAST_KNOWN_OBJ_ATTRIBUTE 2 |
||
1536 | |||
1537 | /* The maximum number of known object attributes for any target. */ |
||
1538 | #define NUM_KNOWN_OBJ_ATTRIBUTES 71 |
||
1539 | |||
1540 | /* The value of an object attribute. The type indicates whether the attribute |
||
1541 | holds and integer, a string, or both. It can also indicate that there can |
||
1542 | be no default (i.e. all values must be written to file, even zero). */ |
||
1543 | |||
1544 | typedef struct obj_attribute |
||
1545 | { |
||
1546 | #define ATTR_TYPE_FLAG_INT_VAL (1 << 0) |
||
1547 | #define ATTR_TYPE_FLAG_STR_VAL (1 << 1) |
||
1548 | #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2) |
||
1549 | |||
1550 | #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL) |
||
1551 | #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL) |
||
1552 | #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT) |
||
1553 | |||
1554 | int type; |
||
1555 | unsigned int i; |
||
1556 | char *s; |
||
1557 | } obj_attribute; |
||
1558 | |||
1559 | typedef struct obj_attribute_list |
||
1560 | { |
||
1561 | struct obj_attribute_list *next; |
||
6324 | serge | 1562 | unsigned int tag; |
5197 | serge | 1563 | obj_attribute attr; |
1564 | } obj_attribute_list; |
||
1565 | |||
1566 | /* Object attributes may either be defined by the processor ABI, index |
||
1567 | OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific |
||
1568 | (and possibly also processor-specific), index OBJ_ATTR_GNU. */ |
||
1569 | #define OBJ_ATTR_PROC 0 |
||
1570 | #define OBJ_ATTR_GNU 1 |
||
1571 | #define OBJ_ATTR_FIRST OBJ_ATTR_PROC |
||
1572 | #define OBJ_ATTR_LAST OBJ_ATTR_GNU |
||
1573 | |||
1574 | /* The following object attribute tags are taken as generic, for all |
||
1575 | targets and for "gnu" where there is no target standard. */ |
||
1576 | enum |
||
1577 | { |
||
1578 | Tag_NULL = 0, |
||
1579 | Tag_File = 1, |
||
1580 | Tag_Section = 2, |
||
1581 | Tag_Symbol = 3, |
||
1582 | Tag_compatibility = 32 |
||
1583 | }; |
||
1584 | |||
1585 | /* The following struct stores information about every SystemTap section |
||
1586 | found in the object file. */ |
||
1587 | struct sdt_note |
||
1588 | { |
||
1589 | struct sdt_note *next; |
||
1590 | bfd_size_type size; |
||
1591 | bfd_byte data[1]; |
||
1592 | }; |
||
1593 | |||
1594 | /* tdata information grabbed from an elf core file. */ |
||
1595 | struct core_elf_obj_tdata |
||
1596 | { |
||
1597 | int signal; |
||
1598 | int pid; |
||
1599 | int lwpid; |
||
1600 | char* program; |
||
1601 | char* command; |
||
1602 | }; |
||
1603 | |||
1604 | /* Extra tdata information held for output ELF BFDs. */ |
||
1605 | struct output_elf_obj_tdata |
||
1606 | { |
||
1607 | struct elf_segment_map *seg_map; |
||
1608 | struct elf_strtab_hash *strtab_ptr; |
||
1609 | |||
1610 | /* STT_SECTION symbols for each section */ |
||
1611 | asymbol **section_syms; |
||
1612 | |||
1613 | /* Used to determine if PT_GNU_EH_FRAME segment header should be |
||
1614 | created. */ |
||
1615 | asection *eh_frame_hdr; |
||
1616 | |||
1617 | /* NT_GNU_BUILD_ID note type info. */ |
||
1618 | struct |
||
1619 | { |
||
1620 | bfd_boolean (*after_write_object_contents) (bfd *); |
||
1621 | const char *style; |
||
1622 | asection *sec; |
||
1623 | } build_id; |
||
1624 | |||
1625 | /* Records the result of `get_program_header_size'. */ |
||
1626 | bfd_size_type program_header_size; |
||
1627 | |||
1628 | /* Used when laying out sections. */ |
||
1629 | file_ptr next_file_pos; |
||
1630 | |||
1631 | int num_section_syms; |
||
1632 | unsigned int shstrtab_section, strtab_section; |
||
1633 | |||
1634 | /* Segment flags for the PT_GNU_STACK segment. */ |
||
1635 | unsigned int stack_flags; |
||
1636 | |||
1637 | /* This is set to TRUE if the object was created by the backend |
||
1638 | linker. */ |
||
1639 | bfd_boolean linker; |
||
1640 | |||
1641 | /* Used to determine if the e_flags field has been initialized */ |
||
1642 | bfd_boolean flags_init; |
||
1643 | }; |
||
1644 | |||
6324 | serge | 1645 | /* Indicate if the bfd contains symbols that have the STT_GNU_IFUNC |
1646 | symbol type or STB_GNU_UNIQUE binding. Used to set the osabi |
||
1647 | field in the ELF header structure. */ |
||
1648 | enum elf_gnu_symbols |
||
1649 | { |
||
1650 | elf_gnu_symbol_none = 0, |
||
1651 | elf_gnu_symbol_any = 1 << 0, |
||
1652 | elf_gnu_symbol_ifunc = (elf_gnu_symbol_any | 1 << 1), |
||
1653 | elf_gnu_symbol_unique = (elf_gnu_symbol_any | 1 << 2), |
||
1654 | elf_gnu_symbol_all = (elf_gnu_symbol_ifunc | elf_gnu_symbol_unique) |
||
1655 | }; |
||
1656 | |||
1657 | typedef struct elf_section_list |
||
1658 | { |
||
1659 | Elf_Internal_Shdr hdr; |
||
1660 | unsigned int ndx; |
||
1661 | struct elf_section_list * next; |
||
1662 | } elf_section_list; |
||
1663 | |||
1664 | |||
5197 | serge | 1665 | /* Some private data is stashed away for future use using the tdata pointer |
1666 | in the bfd structure. */ |
||
1667 | |||
1668 | struct elf_obj_tdata |
||
1669 | { |
||
1670 | Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */ |
||
1671 | Elf_Internal_Shdr **elf_sect_ptr; |
||
1672 | Elf_Internal_Phdr *phdr; |
||
1673 | Elf_Internal_Shdr symtab_hdr; |
||
1674 | Elf_Internal_Shdr shstrtab_hdr; |
||
1675 | Elf_Internal_Shdr strtab_hdr; |
||
1676 | Elf_Internal_Shdr dynsymtab_hdr; |
||
1677 | Elf_Internal_Shdr dynstrtab_hdr; |
||
1678 | Elf_Internal_Shdr dynversym_hdr; |
||
1679 | Elf_Internal_Shdr dynverref_hdr; |
||
1680 | Elf_Internal_Shdr dynverdef_hdr; |
||
6324 | serge | 1681 | elf_section_list * symtab_shndx_list; |
5197 | serge | 1682 | bfd_vma gp; /* The gp value */ |
1683 | unsigned int gp_size; /* The gp size */ |
||
1684 | unsigned int num_elf_sections; /* elf_sect_ptr size */ |
||
1685 | |||
1686 | /* A mapping from external symbols to entries in the linker hash |
||
1687 | table, used when linking. This is indexed by the symbol index |
||
1688 | minus the sh_info field of the symbol table header. */ |
||
1689 | struct elf_link_hash_entry **sym_hashes; |
||
1690 | |||
1691 | /* Track usage and final offsets of GOT entries for local symbols. |
||
1692 | This array is indexed by symbol index. Elements are used |
||
1693 | identically to "got" in struct elf_link_hash_entry. */ |
||
1694 | union |
||
1695 | { |
||
1696 | bfd_signed_vma *refcounts; |
||
1697 | bfd_vma *offsets; |
||
1698 | struct got_entry **ents; |
||
1699 | } local_got; |
||
1700 | |||
1701 | /* The linker ELF emulation code needs to let the backend ELF linker |
||
1702 | know what filename should be used for a dynamic object if the |
||
1703 | dynamic object is found using a search. The emulation code then |
||
1704 | sometimes needs to know what name was actually used. Until the |
||
1705 | file has been added to the linker symbol table, this field holds |
||
1706 | the name the linker wants. After it has been added, it holds the |
||
1707 | name actually used, which will be the DT_SONAME entry if there is |
||
1708 | one. */ |
||
1709 | const char *dt_name; |
||
1710 | |||
1711 | /* The linker emulation needs to know what audit libs |
||
1712 | are used by a dynamic object. */ |
||
1713 | const char *dt_audit; |
||
1714 | |||
1715 | /* Used by find_nearest_line entry point. */ |
||
1716 | void *line_info; |
||
1717 | |||
1718 | /* A place to stash dwarf1 info for this bfd. */ |
||
1719 | struct dwarf1_debug *dwarf1_find_line_info; |
||
1720 | |||
1721 | /* A place to stash dwarf2 info for this bfd. */ |
||
1722 | void *dwarf2_find_line_info; |
||
1723 | |||
1724 | /* Stash away info for yet another find line/function variant. */ |
||
1725 | void *elf_find_function_cache; |
||
1726 | |||
1727 | /* Number of symbol version definitions we are about to emit. */ |
||
1728 | unsigned int cverdefs; |
||
1729 | |||
1730 | /* Number of symbol version references we are about to emit. */ |
||
1731 | unsigned int cverrefs; |
||
1732 | |||
1733 | /* Symbol version definitions in external objects. */ |
||
1734 | Elf_Internal_Verdef *verdef; |
||
1735 | |||
1736 | /* Symbol version references to external objects. */ |
||
1737 | Elf_Internal_Verneed *verref; |
||
1738 | |||
1739 | /* A pointer to the .eh_frame section. */ |
||
1740 | asection *eh_frame_section; |
||
1741 | |||
1742 | /* Symbol buffer. */ |
||
1743 | void *symbuf; |
||
1744 | |||
1745 | obj_attribute known_obj_attributes[2][NUM_KNOWN_OBJ_ATTRIBUTES]; |
||
1746 | obj_attribute_list *other_obj_attributes[2]; |
||
1747 | |||
1748 | /* Linked-list containing information about every Systemtap section |
||
1749 | found in the object file. Each section corresponds to one entry |
||
1750 | in the list. */ |
||
1751 | struct sdt_note *sdt_note_head; |
||
1752 | |||
1753 | Elf_Internal_Shdr **group_sect_ptr; |
||
1754 | int num_group; |
||
1755 | |||
6324 | serge | 1756 | unsigned int symtab_section, dynsymtab_section; |
5197 | serge | 1757 | unsigned int dynversym_section, dynverdef_section, dynverref_section; |
1758 | |||
1759 | /* An identifier used to distinguish different target |
||
1760 | specific extensions to this structure. */ |
||
1761 | enum elf_target_id object_id; |
||
1762 | |||
1763 | /* Whether a dyanmic object was specified normally on the linker |
||
1764 | command line, or was specified when --as-needed was in effect, |
||
1765 | or was found via a DT_NEEDED entry. */ |
||
1766 | enum dynamic_lib_link_class dyn_lib_class; |
||
1767 | |||
1768 | /* Irix 5 often screws up the symbol table, sorting local symbols |
||
1769 | after global symbols. This flag is set if the symbol table in |
||
1770 | this BFD appears to be screwed up. If it is, we ignore the |
||
1771 | sh_info field in the symbol table header, and always read all the |
||
1772 | symbols. */ |
||
1773 | bfd_boolean bad_symtab; |
||
1774 | |||
6324 | serge | 1775 | enum elf_gnu_symbols has_gnu_symbols; |
5197 | serge | 1776 | |
1777 | /* Information grabbed from an elf core file. */ |
||
1778 | struct core_elf_obj_tdata *core; |
||
1779 | |||
1780 | /* More information held for output ELF BFDs. */ |
||
1781 | struct output_elf_obj_tdata *o; |
||
1782 | }; |
||
1783 | |||
1784 | #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) |
||
1785 | |||
1786 | #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id) |
||
1787 | #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size) |
||
1788 | #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header) |
||
1789 | #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr) |
||
1790 | #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections) |
||
1791 | #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map) |
||
1792 | #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos) |
||
1793 | #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr) |
||
1794 | #define elf_linker(bfd) (elf_tdata(bfd) -> o->linker) |
||
1795 | #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags) |
||
1796 | #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr) |
||
1797 | #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) |
||
6324 | serge | 1798 | #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list) |
5197 | serge | 1799 | #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section) |
1800 | #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section) |
||
1801 | #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr) |
||
1802 | #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section) |
||
1803 | #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section) |
||
1804 | #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section) |
||
1805 | #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section) |
||
1806 | #define elf_eh_frame_section(bfd) \ |
||
1807 | (elf_tdata(bfd) -> eh_frame_section) |
||
1808 | #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms) |
||
1809 | #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms) |
||
1810 | #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo) |
||
1811 | #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus) |
||
1812 | #define elf_gp(bfd) (elf_tdata(bfd) -> gp) |
||
1813 | #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size) |
||
1814 | #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes) |
||
1815 | #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts) |
||
1816 | #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets) |
||
1817 | #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents) |
||
1818 | #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name) |
||
1819 | #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit) |
||
1820 | #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class) |
||
1821 | #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab) |
||
1822 | #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init) |
||
1823 | #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes) |
||
1824 | #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes) |
||
1825 | #define elf_known_obj_attributes_proc(bfd) \ |
||
1826 | (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC]) |
||
1827 | #define elf_other_obj_attributes_proc(bfd) \ |
||
1828 | (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC]) |
||
1829 | |||
1830 | extern void _bfd_elf_swap_verdef_in |
||
1831 | (bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *); |
||
1832 | extern void _bfd_elf_swap_verdef_out |
||
1833 | (bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *); |
||
1834 | extern void _bfd_elf_swap_verdaux_in |
||
1835 | (bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *); |
||
1836 | extern void _bfd_elf_swap_verdaux_out |
||
1837 | (bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *); |
||
1838 | extern void _bfd_elf_swap_verneed_in |
||
1839 | (bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *); |
||
1840 | extern void _bfd_elf_swap_verneed_out |
||
1841 | (bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *); |
||
1842 | extern void _bfd_elf_swap_vernaux_in |
||
1843 | (bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *); |
||
1844 | extern void _bfd_elf_swap_vernaux_out |
||
1845 | (bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *); |
||
1846 | extern void _bfd_elf_swap_versym_in |
||
1847 | (bfd *, const Elf_External_Versym *, Elf_Internal_Versym *); |
||
1848 | extern void _bfd_elf_swap_versym_out |
||
1849 | (bfd *, const Elf_Internal_Versym *, Elf_External_Versym *); |
||
1850 | |||
1851 | extern unsigned int _bfd_elf_section_from_bfd_section |
||
1852 | (bfd *, asection *); |
||
1853 | extern char *bfd_elf_string_from_elf_section |
||
1854 | (bfd *, unsigned, unsigned); |
||
1855 | extern Elf_Internal_Sym *bfd_elf_get_elf_syms |
||
1856 | (bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *, |
||
1857 | Elf_External_Sym_Shndx *); |
||
1858 | extern const char *bfd_elf_sym_name |
||
1859 | (bfd *, Elf_Internal_Shdr *, Elf_Internal_Sym *, asection *); |
||
1860 | |||
1861 | extern bfd_boolean _bfd_elf_copy_private_bfd_data |
||
1862 | (bfd *, bfd *); |
||
1863 | extern bfd_boolean _bfd_elf_print_private_bfd_data |
||
1864 | (bfd *, void *); |
||
6324 | serge | 1865 | const char * _bfd_elf_get_symbol_version_string |
1866 | (bfd *, asymbol *, bfd_boolean *); |
||
5197 | serge | 1867 | extern void bfd_elf_print_symbol |
1868 | (bfd *, void *, asymbol *, bfd_print_symbol_type); |
||
1869 | |||
1870 | extern unsigned int _bfd_elf_eh_frame_address_size |
||
1871 | (bfd *, asection *); |
||
1872 | extern bfd_byte _bfd_elf_encode_eh_address |
||
1873 | (bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset, |
||
1874 | asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded); |
||
1875 | extern bfd_boolean _bfd_elf_can_make_relative |
||
1876 | (bfd *input_bfd, struct bfd_link_info *info, asection *eh_frame_section); |
||
1877 | |||
1878 | extern enum elf_reloc_type_class _bfd_elf_reloc_type_class |
||
1879 | (const struct bfd_link_info *, const asection *, |
||
1880 | const Elf_Internal_Rela *); |
||
1881 | extern bfd_vma _bfd_elf_rela_local_sym |
||
1882 | (bfd *, Elf_Internal_Sym *, asection **, Elf_Internal_Rela *); |
||
1883 | extern bfd_vma _bfd_elf_rel_local_sym |
||
1884 | (bfd *, Elf_Internal_Sym *, asection **, bfd_vma); |
||
1885 | extern bfd_vma _bfd_elf_section_offset |
||
1886 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
||
1887 | |||
1888 | extern unsigned long bfd_elf_hash |
||
1889 | (const char *); |
||
1890 | extern unsigned long bfd_elf_gnu_hash |
||
1891 | (const char *); |
||
1892 | |||
1893 | extern bfd_reloc_status_type bfd_elf_generic_reloc |
||
1894 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
||
1895 | extern bfd_boolean bfd_elf_allocate_object |
||
1896 | (bfd *, size_t, enum elf_target_id); |
||
1897 | extern bfd_boolean bfd_elf_make_object |
||
1898 | (bfd *); |
||
1899 | extern bfd_boolean bfd_elf_mkcorefile |
||
1900 | (bfd *); |
||
1901 | extern bfd_boolean _bfd_elf_make_section_from_shdr |
||
1902 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
||
1903 | extern bfd_boolean _bfd_elf_make_section_from_phdr |
||
1904 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
||
1905 | extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc |
||
1906 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
||
1907 | extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create |
||
1908 | (bfd *); |
||
1909 | extern void _bfd_elf_link_hash_table_free |
||
6324 | serge | 1910 | (bfd *); |
5197 | serge | 1911 | extern void _bfd_elf_link_hash_copy_indirect |
1912 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
||
1913 | struct elf_link_hash_entry *); |
||
1914 | extern void _bfd_elf_link_hash_hide_symbol |
||
1915 | (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
||
1916 | extern bfd_boolean _bfd_elf_link_hash_fixup_symbol |
||
1917 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
||
1918 | extern bfd_boolean _bfd_elf_link_hash_table_init |
||
1919 | (struct elf_link_hash_table *, bfd *, |
||
1920 | struct bfd_hash_entry *(*) |
||
1921 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *), |
||
1922 | unsigned int, enum elf_target_id); |
||
1923 | extern bfd_boolean _bfd_elf_slurp_version_tables |
||
1924 | (bfd *, bfd_boolean); |
||
1925 | extern bfd_boolean _bfd_elf_merge_sections |
||
1926 | (bfd *, struct bfd_link_info *); |
||
1927 | extern bfd_boolean _bfd_elf_match_sections_by_type |
||
1928 | (bfd *, const asection *, bfd *, const asection *); |
||
1929 | extern bfd_boolean bfd_elf_is_group_section |
||
1930 | (bfd *, const struct bfd_section *); |
||
1931 | extern bfd_boolean _bfd_elf_section_already_linked |
||
1932 | (bfd *, asection *, struct bfd_link_info *); |
||
1933 | extern void bfd_elf_set_group_contents |
||
1934 | (bfd *, asection *, void *); |
||
1935 | extern asection *_bfd_elf_check_kept_section |
||
1936 | (asection *, struct bfd_link_info *); |
||
1937 | #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms |
||
1938 | extern void _bfd_elf_copy_link_hash_symbol_type |
||
1939 | (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *); |
||
1940 | extern bfd_boolean _bfd_elf_size_group_sections |
||
1941 | (struct bfd_link_info *); |
||
1942 | extern bfd_boolean _bfd_elf_fixup_group_sections |
||
1943 | (bfd *, asection *); |
||
1944 | extern bfd_boolean _bfd_elf_copy_private_header_data |
||
1945 | (bfd *, bfd *); |
||
1946 | extern bfd_boolean _bfd_elf_copy_private_symbol_data |
||
1947 | (bfd *, asymbol *, bfd *, asymbol *); |
||
1948 | #define _bfd_generic_init_private_section_data \ |
||
1949 | _bfd_elf_init_private_section_data |
||
1950 | extern bfd_boolean _bfd_elf_init_private_section_data |
||
1951 | (bfd *, asection *, bfd *, asection *, struct bfd_link_info *); |
||
1952 | extern bfd_boolean _bfd_elf_copy_private_section_data |
||
1953 | (bfd *, asection *, bfd *, asection *); |
||
1954 | extern bfd_boolean _bfd_elf_write_object_contents |
||
1955 | (bfd *); |
||
1956 | extern bfd_boolean _bfd_elf_write_corefile_contents |
||
1957 | (bfd *); |
||
1958 | extern bfd_boolean _bfd_elf_set_section_contents |
||
1959 | (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type); |
||
1960 | extern long _bfd_elf_get_symtab_upper_bound |
||
1961 | (bfd *); |
||
1962 | extern long _bfd_elf_canonicalize_symtab |
||
1963 | (bfd *, asymbol **); |
||
1964 | extern long _bfd_elf_get_dynamic_symtab_upper_bound |
||
1965 | (bfd *); |
||
1966 | extern long _bfd_elf_canonicalize_dynamic_symtab |
||
1967 | (bfd *, asymbol **); |
||
1968 | extern long _bfd_elf_get_synthetic_symtab |
||
1969 | (bfd *, long, asymbol **, long, asymbol **, asymbol **); |
||
1970 | extern long _bfd_elf_get_reloc_upper_bound |
||
1971 | (bfd *, sec_ptr); |
||
1972 | extern long _bfd_elf_canonicalize_reloc |
||
1973 | (bfd *, sec_ptr, arelent **, asymbol **); |
||
1974 | extern asection * _bfd_elf_get_dynamic_reloc_section |
||
1975 | (bfd *, asection *, bfd_boolean); |
||
1976 | extern asection * _bfd_elf_make_dynamic_reloc_section |
||
1977 | (asection *, bfd *, unsigned int, bfd *, bfd_boolean); |
||
1978 | extern long _bfd_elf_get_dynamic_reloc_upper_bound |
||
1979 | (bfd *); |
||
1980 | extern long _bfd_elf_canonicalize_dynamic_reloc |
||
1981 | (bfd *, arelent **, asymbol **); |
||
1982 | extern asymbol *_bfd_elf_make_empty_symbol |
||
1983 | (bfd *); |
||
1984 | extern void _bfd_elf_get_symbol_info |
||
1985 | (bfd *, asymbol *, symbol_info *); |
||
1986 | extern bfd_boolean _bfd_elf_is_local_label_name |
||
1987 | (bfd *, const char *); |
||
1988 | extern alent *_bfd_elf_get_lineno |
||
1989 | (bfd *, asymbol *); |
||
1990 | extern bfd_boolean _bfd_elf_set_arch_mach |
||
1991 | (bfd *, enum bfd_architecture, unsigned long); |
||
1992 | extern bfd_boolean _bfd_elf_find_nearest_line |
||
6324 | serge | 1993 | (bfd *, asymbol **, asection *, bfd_vma, |
1994 | const char **, const char **, unsigned int *, unsigned int *); |
||
5197 | serge | 1995 | extern bfd_boolean _bfd_elf_find_line |
1996 | (bfd *, asymbol **, asymbol *, const char **, unsigned int *); |
||
1997 | extern bfd_boolean _bfd_elf_find_inliner_info |
||
1998 | (bfd *, const char **, const char **, unsigned int *); |
||
6324 | serge | 1999 | extern asymbol *_bfd_elf_find_function |
2000 | (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **); |
||
5197 | serge | 2001 | #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols |
2002 | #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
||
2003 | extern int _bfd_elf_sizeof_headers |
||
2004 | (bfd *, struct bfd_link_info *); |
||
2005 | extern bfd_boolean _bfd_elf_new_section_hook |
||
2006 | (bfd *, asection *); |
||
2007 | extern const struct bfd_elf_special_section *_bfd_elf_get_special_section |
||
2008 | (const char *, const struct bfd_elf_special_section *, unsigned int); |
||
2009 | extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr |
||
2010 | (bfd *, asection *); |
||
2011 | |||
2012 | /* If the target doesn't have reloc handling written yet: */ |
||
2013 | extern void _bfd_elf_no_info_to_howto |
||
2014 | (bfd *, arelent *, Elf_Internal_Rela *); |
||
2015 | |||
2016 | extern bfd_boolean bfd_section_from_shdr |
||
2017 | (bfd *, unsigned int shindex); |
||
2018 | extern bfd_boolean bfd_section_from_phdr |
||
2019 | (bfd *, Elf_Internal_Phdr *, int); |
||
2020 | |||
2021 | extern int _bfd_elf_symbol_from_bfd_symbol |
||
2022 | (bfd *, asymbol **); |
||
2023 | |||
2024 | extern Elf_Internal_Sym *bfd_sym_from_r_symndx |
||
2025 | (struct sym_cache *, bfd *, unsigned long); |
||
2026 | extern asection *bfd_section_from_elf_index |
||
2027 | (bfd *, unsigned int); |
||
2028 | |||
2029 | extern struct elf_strtab_hash * _bfd_elf_strtab_init |
||
2030 | (void); |
||
2031 | extern void _bfd_elf_strtab_free |
||
2032 | (struct elf_strtab_hash *); |
||
2033 | extern bfd_size_type _bfd_elf_strtab_add |
||
2034 | (struct elf_strtab_hash *, const char *, bfd_boolean); |
||
2035 | extern void _bfd_elf_strtab_addref |
||
2036 | (struct elf_strtab_hash *, bfd_size_type); |
||
2037 | extern void _bfd_elf_strtab_delref |
||
2038 | (struct elf_strtab_hash *, bfd_size_type); |
||
2039 | extern unsigned int _bfd_elf_strtab_refcount |
||
2040 | (struct elf_strtab_hash *, bfd_size_type); |
||
2041 | extern void _bfd_elf_strtab_clear_all_refs |
||
2042 | (struct elf_strtab_hash *tab); |
||
2043 | extern void _bfd_elf_strtab_restore_size |
||
2044 | (struct elf_strtab_hash *, bfd_size_type); |
||
2045 | extern bfd_size_type _bfd_elf_strtab_size |
||
2046 | (struct elf_strtab_hash *); |
||
2047 | extern bfd_size_type _bfd_elf_strtab_offset |
||
2048 | (struct elf_strtab_hash *, bfd_size_type); |
||
2049 | extern bfd_boolean _bfd_elf_strtab_emit |
||
2050 | (bfd *, struct elf_strtab_hash *); |
||
2051 | extern void _bfd_elf_strtab_finalize |
||
2052 | (struct elf_strtab_hash *); |
||
2053 | |||
6324 | serge | 2054 | extern bfd_boolean bfd_elf_parse_eh_frame_entries |
2055 | (bfd *, struct bfd_link_info *); |
||
2056 | extern bfd_boolean _bfd_elf_parse_eh_frame_entry |
||
2057 | (struct bfd_link_info *, asection *, struct elf_reloc_cookie *); |
||
5197 | serge | 2058 | extern void _bfd_elf_parse_eh_frame |
2059 | (bfd *, struct bfd_link_info *, asection *, struct elf_reloc_cookie *); |
||
6324 | serge | 2060 | extern bfd_boolean _bfd_elf_end_eh_frame_parsing |
5197 | serge | 2061 | (struct bfd_link_info *info); |
2062 | |||
2063 | extern bfd_boolean _bfd_elf_discard_section_eh_frame |
||
2064 | (bfd *, struct bfd_link_info *, asection *, |
||
2065 | bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *); |
||
2066 | extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr |
||
2067 | (bfd *, struct bfd_link_info *); |
||
2068 | extern bfd_vma _bfd_elf_eh_frame_section_offset |
||
2069 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
||
2070 | extern bfd_boolean _bfd_elf_write_section_eh_frame |
||
2071 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
||
6324 | serge | 2072 | bfd_boolean _bfd_elf_write_section_eh_frame_entry |
2073 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
||
2074 | extern bfd_boolean _bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info *); |
||
5197 | serge | 2075 | extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr |
2076 | (bfd *, struct bfd_link_info *); |
||
2077 | extern bfd_boolean _bfd_elf_eh_frame_present |
||
2078 | (struct bfd_link_info *); |
||
6324 | serge | 2079 | extern bfd_boolean _bfd_elf_eh_frame_entry_present |
2080 | (struct bfd_link_info *); |
||
5197 | serge | 2081 | extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr |
2082 | (struct bfd_link_info *); |
||
2083 | |||
2084 | extern bfd_boolean _bfd_elf_hash_symbol (struct elf_link_hash_entry *); |
||
2085 | |||
2086 | extern long _bfd_elf_link_lookup_local_dynindx |
||
2087 | (struct bfd_link_info *, bfd *, long); |
||
2088 | extern bfd_boolean _bfd_elf_compute_section_file_positions |
||
2089 | (bfd *, struct bfd_link_info *); |
||
2090 | extern file_ptr _bfd_elf_assign_file_position_for_section |
||
2091 | (Elf_Internal_Shdr *, file_ptr, bfd_boolean); |
||
2092 | |||
2093 | extern bfd_boolean _bfd_elf_validate_reloc |
||
2094 | (bfd *, arelent *); |
||
2095 | |||
2096 | extern bfd_boolean _bfd_elf_link_create_dynamic_sections |
||
2097 | (bfd *, struct bfd_link_info *); |
||
2098 | extern bfd_boolean _bfd_elf_link_omit_section_dynsym |
||
2099 | (bfd *, struct bfd_link_info *, asection *); |
||
2100 | extern bfd_boolean _bfd_elf_create_dynamic_sections |
||
2101 | (bfd *, struct bfd_link_info *); |
||
2102 | extern bfd_boolean _bfd_elf_create_got_section |
||
2103 | (bfd *, struct bfd_link_info *); |
||
6324 | serge | 2104 | extern asection *_bfd_elf_section_for_symbol |
2105 | (struct elf_reloc_cookie *, unsigned long, bfd_boolean); |
||
5197 | serge | 2106 | extern struct elf_link_hash_entry *_bfd_elf_define_linkage_sym |
2107 | (bfd *, struct bfd_link_info *, asection *, const char *); |
||
2108 | extern void _bfd_elf_init_1_index_section |
||
2109 | (bfd *, struct bfd_link_info *); |
||
2110 | extern void _bfd_elf_init_2_index_sections |
||
2111 | (bfd *, struct bfd_link_info *); |
||
2112 | |||
2113 | extern bfd_boolean _bfd_elfcore_make_pseudosection |
||
2114 | (bfd *, char *, size_t, ufile_ptr); |
||
2115 | extern char *_bfd_elfcore_strndup |
||
2116 | (bfd *, char *, size_t); |
||
2117 | |||
2118 | extern Elf_Internal_Rela *_bfd_elf_link_read_relocs |
||
2119 | (bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean); |
||
2120 | |||
2121 | extern bfd_boolean _bfd_elf_link_output_relocs |
||
2122 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
||
2123 | struct elf_link_hash_entry **); |
||
2124 | |||
2125 | extern bfd_boolean _bfd_elf_adjust_dynamic_copy |
||
6324 | serge | 2126 | (struct bfd_link_info *, struct elf_link_hash_entry *, asection *); |
5197 | serge | 2127 | |
2128 | extern bfd_boolean _bfd_elf_dynamic_symbol_p |
||
2129 | (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); |
||
2130 | |||
2131 | extern bfd_boolean _bfd_elf_symbol_refs_local_p |
||
2132 | (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); |
||
2133 | |||
2134 | extern bfd_reloc_status_type bfd_elf_perform_complex_relocation |
||
2135 | (bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma); |
||
2136 | |||
2137 | extern bfd_boolean _bfd_elf_setup_sections |
||
2138 | (bfd *); |
||
2139 | |||
6324 | serge | 2140 | extern void _bfd_elf_post_process_headers (bfd * , struct bfd_link_info *); |
5197 | serge | 2141 | |
2142 | extern const bfd_target *bfd_elf32_object_p |
||
2143 | (bfd *); |
||
2144 | extern const bfd_target *bfd_elf32_core_file_p |
||
2145 | (bfd *); |
||
2146 | extern char *bfd_elf32_core_file_failing_command |
||
2147 | (bfd *); |
||
2148 | extern int bfd_elf32_core_file_failing_signal |
||
2149 | (bfd *); |
||
2150 | extern bfd_boolean bfd_elf32_core_file_matches_executable_p |
||
2151 | (bfd *, bfd *); |
||
2152 | extern int bfd_elf32_core_file_pid |
||
2153 | (bfd *); |
||
2154 | |||
2155 | extern bfd_boolean bfd_elf32_swap_symbol_in |
||
2156 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
||
2157 | extern void bfd_elf32_swap_symbol_out |
||
2158 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
||
2159 | extern void bfd_elf32_swap_reloc_in |
||
2160 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
||
2161 | extern void bfd_elf32_swap_reloc_out |
||
2162 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
||
2163 | extern void bfd_elf32_swap_reloca_in |
||
2164 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
||
2165 | extern void bfd_elf32_swap_reloca_out |
||
2166 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
||
2167 | extern void bfd_elf32_swap_phdr_in |
||
2168 | (bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *); |
||
2169 | extern void bfd_elf32_swap_phdr_out |
||
2170 | (bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *); |
||
2171 | extern void bfd_elf32_swap_dyn_in |
||
2172 | (bfd *, const void *, Elf_Internal_Dyn *); |
||
2173 | extern void bfd_elf32_swap_dyn_out |
||
2174 | (bfd *, const Elf_Internal_Dyn *, void *); |
||
2175 | extern long bfd_elf32_slurp_symbol_table |
||
2176 | (bfd *, asymbol **, bfd_boolean); |
||
2177 | extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr |
||
2178 | (bfd *); |
||
2179 | extern int bfd_elf32_write_out_phdrs |
||
2180 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
||
2181 | extern bfd_boolean bfd_elf32_checksum_contents |
||
2182 | (bfd * , void (*) (const void *, size_t, void *), void *); |
||
2183 | extern void bfd_elf32_write_relocs |
||
2184 | (bfd *, asection *, void *); |
||
2185 | extern bfd_boolean bfd_elf32_slurp_reloc_table |
||
2186 | (bfd *, asection *, asymbol **, bfd_boolean); |
||
2187 | |||
2188 | extern const bfd_target *bfd_elf64_object_p |
||
2189 | (bfd *); |
||
2190 | extern const bfd_target *bfd_elf64_core_file_p |
||
2191 | (bfd *); |
||
2192 | extern char *bfd_elf64_core_file_failing_command |
||
2193 | (bfd *); |
||
2194 | extern int bfd_elf64_core_file_failing_signal |
||
2195 | (bfd *); |
||
2196 | extern bfd_boolean bfd_elf64_core_file_matches_executable_p |
||
2197 | (bfd *, bfd *); |
||
2198 | extern int bfd_elf64_core_file_pid |
||
2199 | (bfd *); |
||
2200 | |||
2201 | extern bfd_boolean bfd_elf64_swap_symbol_in |
||
2202 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
||
2203 | extern void bfd_elf64_swap_symbol_out |
||
2204 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
||
2205 | extern void bfd_elf64_swap_reloc_in |
||
2206 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
||
2207 | extern void bfd_elf64_swap_reloc_out |
||
2208 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
||
2209 | extern void bfd_elf64_swap_reloca_in |
||
2210 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
||
2211 | extern void bfd_elf64_swap_reloca_out |
||
2212 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
||
2213 | extern void bfd_elf64_swap_phdr_in |
||
2214 | (bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *); |
||
2215 | extern void bfd_elf64_swap_phdr_out |
||
2216 | (bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *); |
||
2217 | extern void bfd_elf64_swap_dyn_in |
||
2218 | (bfd *, const void *, Elf_Internal_Dyn *); |
||
2219 | extern void bfd_elf64_swap_dyn_out |
||
2220 | (bfd *, const Elf_Internal_Dyn *, void *); |
||
2221 | extern long bfd_elf64_slurp_symbol_table |
||
2222 | (bfd *, asymbol **, bfd_boolean); |
||
2223 | extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr |
||
2224 | (bfd *); |
||
2225 | extern int bfd_elf64_write_out_phdrs |
||
2226 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
||
2227 | extern bfd_boolean bfd_elf64_checksum_contents |
||
2228 | (bfd * , void (*) (const void *, size_t, void *), void *); |
||
2229 | extern void bfd_elf64_write_relocs |
||
2230 | (bfd *, asection *, void *); |
||
2231 | extern bfd_boolean bfd_elf64_slurp_reloc_table |
||
2232 | (bfd *, asection *, asymbol **, bfd_boolean); |
||
2233 | |||
2234 | extern bfd_boolean _bfd_elf_default_relocs_compatible |
||
2235 | (const bfd_target *, const bfd_target *); |
||
2236 | |||
2237 | extern bfd_boolean _bfd_elf_relocs_compatible |
||
2238 | (const bfd_target *, const bfd_target *); |
||
2239 | extern bfd_boolean _bfd_elf_notice_as_needed |
||
2240 | (bfd *, struct bfd_link_info *, enum notice_asneeded_action); |
||
2241 | |||
2242 | extern struct elf_link_hash_entry *_bfd_elf_archive_symbol_lookup |
||
2243 | (bfd *, struct bfd_link_info *, const char *); |
||
2244 | extern bfd_boolean bfd_elf_link_add_symbols |
||
2245 | (bfd *, struct bfd_link_info *); |
||
2246 | extern bfd_boolean _bfd_elf_add_dynamic_entry |
||
2247 | (struct bfd_link_info *, bfd_vma, bfd_vma); |
||
2248 | |||
2249 | extern bfd_boolean bfd_elf_link_record_dynamic_symbol |
||
2250 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
||
2251 | |||
2252 | extern int bfd_elf_link_record_local_dynamic_symbol |
||
2253 | (struct bfd_link_info *, bfd *, long); |
||
2254 | |||
2255 | extern bfd_boolean _bfd_elf_close_and_cleanup |
||
2256 | (bfd *); |
||
2257 | |||
2258 | extern bfd_boolean _bfd_elf_common_definition |
||
2259 | (Elf_Internal_Sym *); |
||
2260 | |||
2261 | extern unsigned int _bfd_elf_common_section_index |
||
2262 | (asection *); |
||
2263 | |||
2264 | extern asection *_bfd_elf_common_section |
||
2265 | (asection *); |
||
2266 | |||
2267 | extern bfd_vma _bfd_elf_default_got_elt_size |
||
2268 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, bfd *, |
||
2269 | unsigned long); |
||
2270 | |||
2271 | extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn |
||
2272 | (bfd *, arelent *, struct bfd_symbol *, void *, |
||
2273 | asection *, bfd *, char **); |
||
2274 | |||
2275 | extern bfd_boolean bfd_elf_final_link |
||
2276 | (bfd *, struct bfd_link_info *); |
||
2277 | |||
2278 | extern void _bfd_elf_gc_keep |
||
2279 | (struct bfd_link_info *info); |
||
2280 | |||
2281 | extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol |
||
2282 | (struct elf_link_hash_entry *h, void *inf); |
||
2283 | |||
2284 | extern bfd_boolean bfd_elf_gc_sections |
||
2285 | (bfd *, struct bfd_link_info *); |
||
2286 | |||
2287 | extern bfd_boolean bfd_elf_gc_record_vtinherit |
||
2288 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
||
2289 | |||
2290 | extern bfd_boolean bfd_elf_gc_record_vtentry |
||
2291 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
||
2292 | |||
2293 | extern asection *_bfd_elf_gc_mark_hook |
||
2294 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
||
2295 | struct elf_link_hash_entry *, Elf_Internal_Sym *); |
||
2296 | |||
2297 | extern asection *_bfd_elf_gc_mark_rsec |
||
2298 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, |
||
6324 | serge | 2299 | struct elf_reloc_cookie *, bfd_boolean *); |
5197 | serge | 2300 | |
2301 | extern bfd_boolean _bfd_elf_gc_mark_reloc |
||
2302 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, |
||
2303 | struct elf_reloc_cookie *); |
||
2304 | |||
2305 | extern bfd_boolean _bfd_elf_gc_mark_fdes |
||
2306 | (struct bfd_link_info *, asection *, asection *, elf_gc_mark_hook_fn, |
||
2307 | struct elf_reloc_cookie *); |
||
2308 | |||
2309 | extern bfd_boolean _bfd_elf_gc_mark |
||
2310 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn); |
||
2311 | |||
2312 | extern bfd_boolean _bfd_elf_gc_mark_extra_sections |
||
2313 | (struct bfd_link_info *, elf_gc_mark_hook_fn); |
||
2314 | |||
2315 | extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets |
||
2316 | (bfd *, struct bfd_link_info *); |
||
2317 | |||
2318 | extern bfd_boolean bfd_elf_gc_common_final_link |
||
2319 | (bfd *, struct bfd_link_info *); |
||
2320 | |||
2321 | extern bfd_boolean bfd_elf_reloc_symbol_deleted_p |
||
2322 | (bfd_vma, void *); |
||
2323 | |||
2324 | extern struct elf_segment_map * _bfd_elf_make_dynamic_segment |
||
2325 | (bfd *, asection *); |
||
2326 | |||
2327 | extern bfd_boolean _bfd_elf_map_sections_to_segments |
||
2328 | (bfd *, struct bfd_link_info *); |
||
2329 | |||
2330 | extern bfd_boolean _bfd_elf_is_function_type (unsigned int); |
||
2331 | |||
2332 | extern bfd_size_type _bfd_elf_maybe_function_sym (const asymbol *, asection *, |
||
2333 | bfd_vma *); |
||
2334 | |||
6324 | serge | 2335 | extern asection *_bfd_elf_get_reloc_section (asection *); |
2336 | |||
5197 | serge | 2337 | extern int bfd_elf_get_default_section_type (flagword); |
2338 | |||
2339 | extern bfd_boolean bfd_elf_lookup_section_flags |
||
2340 | (struct bfd_link_info *, struct flag_info *, asection *); |
||
2341 | |||
2342 | extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section |
||
2343 | (bfd * abfd, asection * section); |
||
2344 | |||
2345 | /* Exported interface for writing elf corefile notes. */ |
||
2346 | extern char *elfcore_write_note |
||
2347 | (bfd *, char *, int *, const char *, int, const void *, int); |
||
2348 | extern char *elfcore_write_prpsinfo |
||
2349 | (bfd *, char *, int *, const char *, const char *); |
||
2350 | extern char *elfcore_write_prstatus |
||
2351 | (bfd *, char *, int *, long, int, const void *); |
||
2352 | extern char * elfcore_write_pstatus |
||
2353 | (bfd *, char *, int *, long, int, const void *); |
||
2354 | extern char *elfcore_write_prfpreg |
||
2355 | (bfd *, char *, int *, const void *, int); |
||
2356 | extern char *elfcore_write_prxfpreg |
||
2357 | (bfd *, char *, int *, const void *, int); |
||
2358 | extern char *elfcore_write_xstatereg |
||
2359 | (bfd *, char *, int *, const void *, int); |
||
2360 | extern char *elfcore_write_ppc_vmx |
||
2361 | (bfd *, char *, int *, const void *, int); |
||
2362 | extern char *elfcore_write_ppc_vsx |
||
2363 | (bfd *, char *, int *, const void *, int); |
||
2364 | extern char *elfcore_write_s390_timer |
||
2365 | (bfd *, char *, int *, const void *, int); |
||
2366 | extern char *elfcore_write_s390_todcmp |
||
2367 | (bfd *, char *, int *, const void *, int); |
||
2368 | extern char *elfcore_write_s390_todpreg |
||
2369 | (bfd *, char *, int *, const void *, int); |
||
2370 | extern char *elfcore_write_s390_ctrs |
||
2371 | (bfd *, char *, int *, const void *, int); |
||
2372 | extern char *elfcore_write_s390_prefix |
||
2373 | (bfd *, char *, int *, const void *, int); |
||
2374 | extern char *elfcore_write_s390_last_break |
||
2375 | (bfd *, char *, int *, const void *, int); |
||
2376 | extern char *elfcore_write_s390_system_call |
||
2377 | (bfd *, char *, int *, const void *, int); |
||
2378 | extern char *elfcore_write_s390_tdb |
||
2379 | (bfd *, char *, int *, const void *, int); |
||
6324 | serge | 2380 | extern char *elfcore_write_s390_vxrs_low |
2381 | (bfd *, char *, int *, const void *, int); |
||
2382 | extern char *elfcore_write_s390_vxrs_high |
||
2383 | (bfd *, char *, int *, const void *, int); |
||
5197 | serge | 2384 | extern char *elfcore_write_arm_vfp |
2385 | (bfd *, char *, int *, const void *, int); |
||
2386 | extern char *elfcore_write_aarch_tls |
||
2387 | (bfd *, char *, int *, const void *, int); |
||
2388 | extern char *elfcore_write_aarch_hw_break |
||
2389 | (bfd *, char *, int *, const void *, int); |
||
2390 | extern char *elfcore_write_aarch_hw_watch |
||
2391 | (bfd *, char *, int *, const void *, int); |
||
2392 | extern char *elfcore_write_lwpstatus |
||
2393 | (bfd *, char *, int *, long, int, const void *); |
||
2394 | extern char *elfcore_write_register_note |
||
2395 | (bfd *, char *, int *, const char *, const void *, int); |
||
2396 | |||
2397 | /* Internal structure which holds information to be included in the |
||
2398 | PRPSINFO section of Linux core files. |
||
2399 | |||
2400 | This is an "internal" structure in the sense that it should be used |
||
2401 | to pass information to BFD (via the `elfcore_write_linux_prpsinfo' |
||
2402 | function), so things like endianess shouldn't be an issue. This |
||
2403 | structure will eventually be converted in one of the |
||
2404 | `elf_external_linux_*' structures and written out to an output bfd |
||
2405 | by one of the functions declared below. */ |
||
2406 | |||
2407 | struct elf_internal_linux_prpsinfo |
||
2408 | { |
||
2409 | char pr_state; /* Numeric process state. */ |
||
2410 | char pr_sname; /* Char for pr_state. */ |
||
2411 | char pr_zomb; /* Zombie. */ |
||
2412 | char pr_nice; /* Nice val. */ |
||
2413 | unsigned long pr_flag; /* Flags. */ |
||
2414 | unsigned int pr_uid; |
||
2415 | unsigned int pr_gid; |
||
2416 | int pr_pid, pr_ppid, pr_pgrp, pr_sid; |
||
2417 | char pr_fname[16 + 1]; /* Filename of executable. */ |
||
2418 | char pr_psargs[80 + 1]; /* Initial part of arg list. */ |
||
2419 | }; |
||
2420 | |||
2421 | /* Linux/most 32-bit archs. */ |
||
2422 | extern char *elfcore_write_linux_prpsinfo32 |
||
2423 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); |
||
2424 | |||
2425 | /* Linux/most 64-bit archs. */ |
||
2426 | extern char *elfcore_write_linux_prpsinfo64 |
||
2427 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); |
||
2428 | |||
2429 | /* Linux/PPC32 uses different layout compared to most archs. */ |
||
2430 | extern char *elfcore_write_ppc_linux_prpsinfo32 |
||
2431 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); |
||
2432 | |||
2433 | extern bfd *_bfd_elf32_bfd_from_remote_memory |
||
6324 | serge | 2434 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
5197 | serge | 2435 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)); |
2436 | extern bfd *_bfd_elf64_bfd_from_remote_memory |
||
6324 | serge | 2437 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
5197 | serge | 2438 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)); |
2439 | |||
2440 | extern bfd_vma bfd_elf_obj_attr_size (bfd *); |
||
2441 | extern void bfd_elf_set_obj_attr_contents (bfd *, bfd_byte *, bfd_vma); |
||
6324 | serge | 2442 | extern int bfd_elf_get_obj_attr_int (bfd *, int, unsigned int); |
2443 | extern void bfd_elf_add_obj_attr_int (bfd *, int, unsigned int, unsigned int); |
||
5197 | serge | 2444 | #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \ |
2445 | bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) |
||
6324 | serge | 2446 | extern void bfd_elf_add_obj_attr_string (bfd *, int, unsigned int, const char *); |
5197 | serge | 2447 | #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \ |
2448 | bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) |
||
6324 | serge | 2449 | extern void bfd_elf_add_obj_attr_int_string (bfd *, int, unsigned int, |
2450 | unsigned int, const char *); |
||
5197 | serge | 2451 | #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \ |
2452 | bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \ |
||
2453 | (INTVAL), (STRVAL)) |
||
2454 | |||
2455 | extern char *_bfd_elf_attr_strdup (bfd *, const char *); |
||
2456 | extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *); |
||
6324 | serge | 2457 | extern int _bfd_elf_obj_attrs_arg_type (bfd *, int, unsigned int); |
5197 | serge | 2458 | extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *); |
2459 | extern bfd_boolean _bfd_elf_merge_object_attributes (bfd *, bfd *); |
||
2460 | extern bfd_boolean _bfd_elf_merge_unknown_attribute_low (bfd *, bfd *, int); |
||
2461 | extern bfd_boolean _bfd_elf_merge_unknown_attribute_list (bfd *, bfd *); |
||
2462 | extern Elf_Internal_Shdr *_bfd_elf_single_rel_hdr (asection *sec); |
||
2463 | |||
2464 | /* The linker may need to keep track of the number of relocs that it |
||
2465 | decides to copy as dynamic relocs in check_relocs for each symbol. |
||
2466 | This is so that it can later discard them if they are found to be |
||
2467 | unnecessary. We can store the information in a field extending the |
||
2468 | regular ELF linker hash table. */ |
||
2469 | |||
2470 | struct elf_dyn_relocs |
||
2471 | { |
||
2472 | struct elf_dyn_relocs *next; |
||
2473 | |||
2474 | /* The input section of the reloc. */ |
||
2475 | asection *sec; |
||
2476 | |||
2477 | /* Total number of relocs copied for the input section. */ |
||
2478 | bfd_size_type count; |
||
2479 | |||
2480 | /* Number of pc-relative relocs copied for the input section. */ |
||
2481 | bfd_size_type pc_count; |
||
2482 | }; |
||
2483 | |||
2484 | extern bfd_boolean _bfd_elf_create_ifunc_sections |
||
2485 | (bfd *, struct bfd_link_info *); |
||
2486 | extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs |
||
2487 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
||
2488 | struct elf_dyn_relocs **, unsigned int, unsigned int, unsigned int); |
||
6324 | serge | 2489 | extern long _bfd_elf_ifunc_get_synthetic_symtab |
2490 | (bfd *, long, asymbol **, long, asymbol **, asymbol **, asection *, |
||
2491 | bfd_vma *(*) (bfd *, asymbol **, asection *, asection *)); |
||
5197 | serge | 2492 | |
2493 | extern void elf_append_rela (bfd *, asection *, Elf_Internal_Rela *); |
||
2494 | extern void elf_append_rel (bfd *, asection *, Elf_Internal_Rela *); |
||
2495 | |||
2496 | extern bfd_vma elf64_r_info (bfd_vma, bfd_vma); |
||
2497 | extern bfd_vma elf64_r_sym (bfd_vma); |
||
2498 | extern bfd_vma elf32_r_info (bfd_vma, bfd_vma); |
||
2499 | extern bfd_vma elf32_r_sym (bfd_vma); |
||
2500 | |||
2501 | /* Large common section. */ |
||
2502 | extern asection _bfd_elf_large_com_section; |
||
2503 | |||
2504 | /* Hash for local symbol with the first section id, ID, in the input |
||
2505 | file and the local symbol index, SYM. */ |
||
2506 | #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \ |
||
2507 | (((((ID) & 0xff) << 24) | (((ID) & 0xff00) << 8)) \ |
||
2508 | ^ (SYM) ^ ((ID) >> 16)) |
||
2509 | |||
2510 | /* This is the condition under which finish_dynamic_symbol will be called. |
||
2511 | If our finish_dynamic_symbol isn't called, we'll need to do something |
||
2512 | about initializing any .plt and .got entries in relocate_section. */ |
||
2513 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ |
||
2514 | ((DYN) \ |
||
2515 | && ((SHARED) || !(H)->forced_local) \ |
||
2516 | && ((H)->dynindx != -1 || (H)->forced_local)) |
||
2517 | |||
2518 | /* This macro is to avoid lots of duplicated code in the body |
||
2519 | of xxx_relocate_section() in the various elfxx-xxxx.c files. */ |
||
2520 | #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \ |
||
2521 | r_symndx, symtab_hdr, sym_hashes, \ |
||
2522 | h, sec, relocation, \ |
||
6324 | serge | 2523 | unresolved_reloc, warned, ignored) \ |
5197 | serge | 2524 | do \ |
2525 | { \ |
||
2526 | /* It seems this can happen with erroneous or unsupported \ |
||
2527 | input (mixing a.out and elf in an archive, for example.) */ \ |
||
2528 | if (sym_hashes == NULL) \ |
||
2529 | return FALSE; \ |
||
2530 | \ |
||
2531 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \ |
||
2532 | \ |
||
6324 | serge | 2533 | if (info->wrap_hash != NULL \ |
2534 | && (input_section->flags & SEC_DEBUGGING) != 0) \ |
||
2535 | h = ((struct elf_link_hash_entry *) \ |
||
2536 | unwrap_hash_lookup (info, input_bfd, &h->root)); \ |
||
2537 | \ |
||
5197 | serge | 2538 | while (h->root.type == bfd_link_hash_indirect \ |
2539 | || h->root.type == bfd_link_hash_warning) \ |
||
2540 | h = (struct elf_link_hash_entry *) h->root.u.i.link; \ |
||
2541 | \ |
||
2542 | warned = FALSE; \ |
||
6324 | serge | 2543 | ignored = FALSE; \ |
5197 | serge | 2544 | unresolved_reloc = FALSE; \ |
2545 | relocation = 0; \ |
||
2546 | if (h->root.type == bfd_link_hash_defined \ |
||
2547 | || h->root.type == bfd_link_hash_defweak) \ |
||
2548 | { \ |
||
2549 | sec = h->root.u.def.section; \ |
||
2550 | if (sec == NULL \ |
||
2551 | || sec->output_section == NULL) \ |
||
2552 | /* Set a flag that will be cleared later if we find a \ |
||
2553 | relocation value for this symbol. output_section \ |
||
2554 | is typically NULL for symbols satisfied by a shared \ |
||
2555 | library. */ \ |
||
2556 | unresolved_reloc = TRUE; \ |
||
2557 | else \ |
||
2558 | relocation = (h->root.u.def.value \ |
||
2559 | + sec->output_section->vma \ |
||
2560 | + sec->output_offset); \ |
||
2561 | } \ |
||
2562 | else if (h->root.type == bfd_link_hash_undefweak) \ |
||
2563 | ; \ |
||
2564 | else if (info->unresolved_syms_in_objects == RM_IGNORE \ |
||
2565 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \ |
||
6324 | serge | 2566 | ignored = TRUE; \ |
2567 | else if (!bfd_link_relocatable (info)) \ |
||
5197 | serge | 2568 | { \ |
2569 | bfd_boolean err; \ |
||
2570 | err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR \ |
||
2571 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \ |
||
2572 | if (!info->callbacks->undefined_symbol (info, \ |
||
2573 | h->root.root.string, \ |
||
2574 | input_bfd, \ |
||
2575 | input_section, \ |
||
2576 | rel->r_offset, err)) \ |
||
2577 | return FALSE; \ |
||
2578 | warned = TRUE; \ |
||
2579 | } \ |
||
2580 | (void) unresolved_reloc; \ |
||
2581 | (void) warned; \ |
||
6324 | serge | 2582 | (void) ignored; \ |
5197 | serge | 2583 | } \ |
2584 | while (0) |
||
2585 | |||
2586 | /* This macro is to avoid lots of duplicated code in the body of the |
||
2587 | loop over relocations in xxx_relocate_section() in the various |
||
2588 | elfxx-xxxx.c files. |
||
2589 | |||
2590 | Handle relocations against symbols from removed linkonce sections, |
||
2591 | or sections discarded by a linker script. When doing a relocatable |
||
2592 | link, we remove such relocations. Otherwise, we just want the |
||
2593 | section contents zeroed and avoid any special processing. */ |
||
2594 | #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \ |
||
2595 | rel, count, relend, \ |
||
2596 | howto, index, contents) \ |
||
2597 | { \ |
||
2598 | int i_; \ |
||
2599 | _bfd_clear_contents (howto, input_bfd, input_section, \ |
||
2600 | contents + rel[index].r_offset); \ |
||
2601 | \ |
||
6324 | serge | 2602 | if (bfd_link_relocatable (info) \ |
5197 | serge | 2603 | && (input_section->flags & SEC_DEBUGGING)) \ |
2604 | { \ |
||
2605 | /* Only remove relocations in debug sections since other \ |
||
2606 | sections may require relocations. */ \ |
||
2607 | Elf_Internal_Shdr *rel_hdr; \ |
||
2608 | \ |
||
2609 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \ |
||
2610 | \ |
||
2611 | /* Avoid empty output section. */ \ |
||
2612 | if (rel_hdr->sh_size > rel_hdr->sh_entsize) \ |
||
2613 | { \ |
||
2614 | rel_hdr->sh_size -= rel_hdr->sh_entsize; \ |
||
2615 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); \ |
||
2616 | rel_hdr->sh_size -= rel_hdr->sh_entsize; \ |
||
2617 | \ |
||
2618 | memmove (rel, rel + count, \ |
||
2619 | (relend - rel - count) * sizeof (*rel)); \ |
||
2620 | \ |
||
2621 | input_section->reloc_count--; \ |
||
2622 | relend -= count; \ |
||
2623 | rel--; \ |
||
2624 | continue; \ |
||
2625 | } \ |
||
2626 | } \ |
||
2627 | \ |
||
2628 | for (i_ = 0; i_ < count; i_++) \ |
||
2629 | { \ |
||
2630 | rel[i_].r_info = 0; \ |
||
2631 | rel[i_].r_addend = 0; \ |
||
2632 | } \ |
||
2633 | rel += count - 1; \ |
||
2634 | continue; \ |
||
2635 | } |
||
2636 | |||
2637 | /* Will a symbol be bound to the definition within the shared |
||
2638 | library, if any. A unique symbol can never be bound locally. */ |
||
2639 | #define SYMBOLIC_BIND(INFO, H) \ |
||
2640 | (!(H)->unique_global \ |
||
2641 | && ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic))) |
||
2642 | |||
6324 | serge | 2643 | #ifdef __cplusplus |
2644 | } |
||
2645 | #endif |
||
5197 | serge | 2646 | #endif /* _LIBELF_H_ */>><>><>><>><>><>><>><>><> |