Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1 | //===-- ObjectFileELF.cpp ------------------------------------- -*- C++ -*-===// |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #include "ObjectFileELF.h" |
| 11 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 12 | #include <cassert> |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 13 | #include <algorithm> |
| 14 | |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 15 | #include "lldb/Core/ArchSpec.h" |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 16 | #include "lldb/Core/DataBuffer.h" |
| 17 | #include "lldb/Core/Error.h" |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 18 | #include "lldb/Core/FileSpecList.h" |
Jim Ingham | 2877594 | 2011-03-07 23:44:08 +0000 | [diff] [blame] | 19 | #include "lldb/Core/Module.h" |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 20 | #include "lldb/Core/PluginManager.h" |
| 21 | #include "lldb/Core/Section.h" |
| 22 | #include "lldb/Core/Stream.h" |
Jim Ingham | 2877594 | 2011-03-07 23:44:08 +0000 | [diff] [blame] | 23 | #include "lldb/Symbol/SymbolContext.h" |
Greg Clayton | 940b103 | 2011-02-23 00:35:02 +0000 | [diff] [blame] | 24 | #include "lldb/Host/Host.h" |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 25 | |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 26 | #include "llvm/ADT/PointerUnion.h" |
| 27 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 28 | #define CASE_AND_STREAM(s, def, width) \ |
| 29 | case def: s->Printf("%-*s", width, #def); break; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 30 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 31 | using namespace lldb; |
| 32 | using namespace lldb_private; |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 33 | using namespace elf; |
| 34 | using namespace llvm::ELF; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 35 | |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 36 | namespace { |
| 37 | //===----------------------------------------------------------------------===// |
| 38 | /// @class ELFRelocation |
| 39 | /// @brief Generic wrapper for ELFRel and ELFRela. |
| 40 | /// |
| 41 | /// This helper class allows us to parse both ELFRel and ELFRela relocation |
| 42 | /// entries in a generic manner. |
| 43 | class ELFRelocation |
| 44 | { |
| 45 | public: |
| 46 | |
| 47 | /// Constructs an ELFRelocation entry with a personality as given by @p |
| 48 | /// type. |
| 49 | /// |
| 50 | /// @param type Either DT_REL or DT_RELA. Any other value is invalid. |
| 51 | ELFRelocation(unsigned type); |
| 52 | |
| 53 | ~ELFRelocation(); |
| 54 | |
| 55 | bool |
| 56 | Parse(const lldb_private::DataExtractor &data, uint32_t *offset); |
| 57 | |
| 58 | static unsigned |
| 59 | RelocType32(const ELFRelocation &rel); |
| 60 | |
| 61 | static unsigned |
| 62 | RelocType64(const ELFRelocation &rel); |
| 63 | |
| 64 | static unsigned |
| 65 | RelocSymbol32(const ELFRelocation &rel); |
| 66 | |
| 67 | static unsigned |
| 68 | RelocSymbol64(const ELFRelocation &rel); |
| 69 | |
| 70 | private: |
| 71 | typedef llvm::PointerUnion<ELFRel*, ELFRela*> RelocUnion; |
| 72 | |
| 73 | RelocUnion reloc; |
| 74 | }; |
| 75 | |
| 76 | ELFRelocation::ELFRelocation(unsigned type) |
| 77 | { |
| 78 | if (type == DT_REL) |
| 79 | reloc = new ELFRel(); |
| 80 | else if (type == DT_RELA) |
| 81 | reloc = new ELFRela(); |
| 82 | else { |
| 83 | assert(false && "unexpected relocation type"); |
| 84 | reloc = static_cast<ELFRel*>(NULL); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | ELFRelocation::~ELFRelocation() |
| 89 | { |
| 90 | if (reloc.is<ELFRel*>()) |
| 91 | delete reloc.get<ELFRel*>(); |
| 92 | else |
| 93 | delete reloc.get<ELFRela*>(); |
| 94 | } |
| 95 | |
| 96 | bool |
| 97 | ELFRelocation::Parse(const lldb_private::DataExtractor &data, uint32_t *offset) |
| 98 | { |
| 99 | if (reloc.is<ELFRel*>()) |
| 100 | return reloc.get<ELFRel*>()->Parse(data, offset); |
| 101 | else |
| 102 | return reloc.get<ELFRela*>()->Parse(data, offset); |
| 103 | } |
| 104 | |
| 105 | unsigned |
| 106 | ELFRelocation::RelocType32(const ELFRelocation &rel) |
| 107 | { |
| 108 | if (rel.reloc.is<ELFRel*>()) |
| 109 | return ELFRel::RelocType32(*rel.reloc.get<ELFRel*>()); |
| 110 | else |
| 111 | return ELFRela::RelocType32(*rel.reloc.get<ELFRela*>()); |
| 112 | } |
| 113 | |
| 114 | unsigned |
| 115 | ELFRelocation::RelocType64(const ELFRelocation &rel) |
| 116 | { |
| 117 | if (rel.reloc.is<ELFRel*>()) |
| 118 | return ELFRel::RelocType64(*rel.reloc.get<ELFRel*>()); |
| 119 | else |
| 120 | return ELFRela::RelocType64(*rel.reloc.get<ELFRela*>()); |
| 121 | } |
| 122 | |
| 123 | unsigned |
| 124 | ELFRelocation::RelocSymbol32(const ELFRelocation &rel) |
| 125 | { |
| 126 | if (rel.reloc.is<ELFRel*>()) |
| 127 | return ELFRel::RelocSymbol32(*rel.reloc.get<ELFRel*>()); |
| 128 | else |
| 129 | return ELFRela::RelocSymbol32(*rel.reloc.get<ELFRela*>()); |
| 130 | } |
| 131 | |
| 132 | unsigned |
| 133 | ELFRelocation::RelocSymbol64(const ELFRelocation &rel) |
| 134 | { |
| 135 | if (rel.reloc.is<ELFRel*>()) |
| 136 | return ELFRel::RelocSymbol64(*rel.reloc.get<ELFRel*>()); |
| 137 | else |
| 138 | return ELFRela::RelocSymbol64(*rel.reloc.get<ELFRela*>()); |
| 139 | } |
| 140 | |
| 141 | } // end anonymous namespace |
| 142 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 143 | //------------------------------------------------------------------ |
| 144 | // Static methods. |
| 145 | //------------------------------------------------------------------ |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 146 | void |
| 147 | ObjectFileELF::Initialize() |
| 148 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 149 | PluginManager::RegisterPlugin(GetPluginNameStatic(), |
| 150 | GetPluginDescriptionStatic(), |
Greg Clayton | b5a8f14 | 2012-02-05 02:38:54 +0000 | [diff] [blame^] | 151 | CreateInstance, |
| 152 | CreateMemoryInstance); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | void |
| 156 | ObjectFileELF::Terminate() |
| 157 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 158 | PluginManager::UnregisterPlugin(CreateInstance); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 159 | } |
| 160 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 161 | const char * |
| 162 | ObjectFileELF::GetPluginNameStatic() |
| 163 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 164 | return "object-file.elf"; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 165 | } |
| 166 | |
| 167 | const char * |
| 168 | ObjectFileELF::GetPluginDescriptionStatic() |
| 169 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 170 | return "ELF object file reader."; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 171 | } |
| 172 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 173 | ObjectFile * |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 174 | ObjectFileELF::CreateInstance(Module *module, |
| 175 | DataBufferSP &data_sp, |
| 176 | const FileSpec *file, addr_t offset, |
| 177 | addr_t length) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 178 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 179 | if (data_sp && data_sp->GetByteSize() > (llvm::ELF::EI_NIDENT + offset)) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 180 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 181 | const uint8_t *magic = data_sp->GetBytes() + offset; |
| 182 | if (ELFHeader::MagicBytesMatch(magic)) |
| 183 | { |
| 184 | unsigned address_size = ELFHeader::AddressSizeInBytes(magic); |
| 185 | if (address_size == 4 || address_size == 8) |
| 186 | { |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 187 | std::auto_ptr<ObjectFileELF> objfile_ap( |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 188 | new ObjectFileELF(module, data_sp, file, offset, length)); |
Stephen Wilson | f7cc64d | 2011-02-24 19:16:15 +0000 | [diff] [blame] | 189 | ArchSpec spec; |
| 190 | if (objfile_ap->GetArchitecture(spec) && |
| 191 | objfile_ap->SetModulesArchitecture(spec)) |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 192 | return objfile_ap.release(); |
| 193 | } |
| 194 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 195 | } |
| 196 | return NULL; |
| 197 | } |
| 198 | |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 199 | |
Greg Clayton | b5a8f14 | 2012-02-05 02:38:54 +0000 | [diff] [blame^] | 200 | ObjectFile* |
| 201 | ObjectFileELF::CreateMemoryInstance(Module* module, DataBufferSP& data_sp, const lldb::ProcessSP &process_sp, lldb::addr_t header_addr) |
| 202 | { |
| 203 | return NULL; |
| 204 | } |
| 205 | |
| 206 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 207 | //------------------------------------------------------------------ |
| 208 | // PluginInterface protocol |
| 209 | //------------------------------------------------------------------ |
| 210 | const char * |
| 211 | ObjectFileELF::GetPluginName() |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 212 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 213 | return "ObjectFileELF"; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 214 | } |
| 215 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 216 | const char * |
| 217 | ObjectFileELF::GetShortPluginName() |
| 218 | { |
| 219 | return GetPluginNameStatic(); |
| 220 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 221 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 222 | uint32_t |
| 223 | ObjectFileELF::GetPluginVersion() |
| 224 | { |
| 225 | return m_plugin_version; |
| 226 | } |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 227 | //------------------------------------------------------------------ |
| 228 | // ObjectFile protocol |
| 229 | //------------------------------------------------------------------ |
| 230 | |
| 231 | ObjectFileELF::ObjectFileELF(Module* module, DataBufferSP& dataSP, |
| 232 | const FileSpec* file, addr_t offset, |
| 233 | addr_t length) |
| 234 | : ObjectFile(module, file, offset, length, dataSP), |
| 235 | m_header(), |
| 236 | m_program_headers(), |
| 237 | m_section_headers(), |
| 238 | m_sections_ap(), |
| 239 | m_symtab_ap(), |
| 240 | m_filespec_ap(), |
| 241 | m_shstr_data() |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 242 | { |
| 243 | if (file) |
| 244 | m_file = *file; |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 245 | ::memset(&m_header, 0, sizeof(m_header)); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 246 | } |
| 247 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 248 | ObjectFileELF::~ObjectFileELF() |
| 249 | { |
| 250 | } |
| 251 | |
Jim Ingham | 7508e73 | 2010-08-09 23:31:02 +0000 | [diff] [blame] | 252 | bool |
| 253 | ObjectFileELF::IsExecutable() const |
| 254 | { |
Stephen Wilson | 9098739 | 2011-01-15 00:09:50 +0000 | [diff] [blame] | 255 | return m_header.e_entry != 0; |
Jim Ingham | 7508e73 | 2010-08-09 23:31:02 +0000 | [diff] [blame] | 256 | } |
| 257 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 258 | ByteOrder |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 259 | ObjectFileELF::GetByteOrder() const |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 260 | { |
| 261 | if (m_header.e_ident[EI_DATA] == ELFDATA2MSB) |
| 262 | return eByteOrderBig; |
| 263 | if (m_header.e_ident[EI_DATA] == ELFDATA2LSB) |
| 264 | return eByteOrderLittle; |
| 265 | return eByteOrderInvalid; |
| 266 | } |
| 267 | |
| 268 | size_t |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 269 | ObjectFileELF::GetAddressByteSize() const |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 270 | { |
| 271 | return m_data.GetAddressByteSize(); |
| 272 | } |
| 273 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 274 | unsigned |
| 275 | ObjectFileELF::SectionIndex(const SectionHeaderCollIter &I) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 276 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 277 | return std::distance(m_section_headers.begin(), I) + 1; |
| 278 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 279 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 280 | unsigned |
| 281 | ObjectFileELF::SectionIndex(const SectionHeaderCollConstIter &I) const |
| 282 | { |
| 283 | return std::distance(m_section_headers.begin(), I) + 1; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | bool |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 287 | ObjectFileELF::ParseHeader() |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 288 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 289 | uint32_t offset = GetOffset(); |
| 290 | return m_header.Parse(m_data, &offset); |
| 291 | } |
| 292 | |
| 293 | bool |
Greg Clayton | 0467c78 | 2011-02-04 18:53:10 +0000 | [diff] [blame] | 294 | ObjectFileELF::GetUUID(lldb_private::UUID* uuid) |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 295 | { |
| 296 | // FIXME: Return MD5 sum here. See comment in ObjectFile.h. |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 297 | return false; |
| 298 | } |
| 299 | |
| 300 | uint32_t |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 301 | ObjectFileELF::GetDependentModules(FileSpecList &files) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 302 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 303 | size_t num_modules = ParseDependentModules(); |
| 304 | uint32_t num_specs = 0; |
| 305 | |
| 306 | for (unsigned i = 0; i < num_modules; ++i) |
| 307 | { |
| 308 | if (files.AppendIfUnique(m_filespec_ap->GetFileSpecAtIndex(i))) |
| 309 | num_specs++; |
| 310 | } |
| 311 | |
| 312 | return num_specs; |
| 313 | } |
| 314 | |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 315 | user_id_t |
| 316 | ObjectFileELF::GetSectionIndexByType(unsigned type) |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 317 | { |
| 318 | if (!ParseSectionHeaders()) |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 319 | return 0; |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 320 | |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 321 | for (SectionHeaderCollIter sh_pos = m_section_headers.begin(); |
| 322 | sh_pos != m_section_headers.end(); ++sh_pos) |
| 323 | { |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 324 | if (sh_pos->sh_type == type) |
| 325 | return SectionIndex(sh_pos); |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 326 | } |
| 327 | |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 328 | return 0; |
| 329 | } |
| 330 | |
| 331 | Address |
| 332 | ObjectFileELF::GetImageInfoAddress() |
| 333 | { |
| 334 | if (!ParseDynamicSymbols()) |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 335 | return Address(); |
| 336 | |
| 337 | SectionList *section_list = GetSectionList(); |
| 338 | if (!section_list) |
| 339 | return Address(); |
| 340 | |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 341 | user_id_t dynsym_id = GetSectionIndexByType(SHT_DYNAMIC); |
| 342 | if (!dynsym_id) |
| 343 | return Address(); |
| 344 | |
| 345 | const ELFSectionHeader *dynsym_hdr = GetSectionHeaderByIndex(dynsym_id); |
| 346 | if (!dynsym_hdr) |
| 347 | return Address(); |
| 348 | |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 349 | Section *dynsym = section_list->FindSectionByID(dynsym_id).get(); |
| 350 | if (!dynsym) |
| 351 | return Address(); |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 352 | |
| 353 | for (size_t i = 0; i < m_dynamic_symbols.size(); ++i) |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 354 | { |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 355 | ELFDynamic &symbol = m_dynamic_symbols[i]; |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 356 | |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 357 | if (symbol.d_tag == DT_DEBUG) |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 358 | { |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 359 | // Compute the offset as the number of previous entries plus the |
| 360 | // size of d_tag. |
| 361 | addr_t offset = i * dynsym_hdr->sh_entsize + GetAddressByteSize(); |
| 362 | return Address(dynsym, offset); |
Stephen Wilson | f2ad325 | 2011-01-15 00:08:44 +0000 | [diff] [blame] | 363 | } |
| 364 | } |
| 365 | |
| 366 | return Address(); |
| 367 | } |
| 368 | |
Jim Ingham | 2877594 | 2011-03-07 23:44:08 +0000 | [diff] [blame] | 369 | lldb_private::Address |
| 370 | ObjectFileELF::GetEntryPointAddress () |
| 371 | { |
Stephen Wilson | 791af3b | 2011-03-08 04:12:15 +0000 | [diff] [blame] | 372 | SectionList *sections; |
| 373 | addr_t offset; |
Jim Ingham | 2877594 | 2011-03-07 23:44:08 +0000 | [diff] [blame] | 374 | |
Stephen Wilson | 791af3b | 2011-03-08 04:12:15 +0000 | [diff] [blame] | 375 | if (m_entry_point_address.IsValid()) |
| 376 | return m_entry_point_address; |
| 377 | |
| 378 | if (!ParseHeader() || !IsExecutable()) |
| 379 | return m_entry_point_address; |
| 380 | |
| 381 | sections = GetSectionList(); |
| 382 | offset = m_header.e_entry; |
| 383 | |
| 384 | if (!sections) |
| 385 | { |
| 386 | m_entry_point_address.SetOffset(offset); |
| 387 | return m_entry_point_address; |
| 388 | } |
| 389 | |
| 390 | m_entry_point_address.ResolveAddressUsingFileSections(offset, sections); |
| 391 | |
| 392 | return m_entry_point_address; |
Jim Ingham | 2877594 | 2011-03-07 23:44:08 +0000 | [diff] [blame] | 393 | } |
| 394 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 395 | //---------------------------------------------------------------------- |
| 396 | // ParseDependentModules |
| 397 | //---------------------------------------------------------------------- |
| 398 | size_t |
| 399 | ObjectFileELF::ParseDependentModules() |
| 400 | { |
| 401 | if (m_filespec_ap.get()) |
| 402 | return m_filespec_ap->GetSize(); |
| 403 | |
| 404 | m_filespec_ap.reset(new FileSpecList()); |
| 405 | |
| 406 | if (!(ParseSectionHeaders() && GetSectionHeaderStringTable())) |
| 407 | return 0; |
| 408 | |
| 409 | // Locate the dynamic table. |
| 410 | user_id_t dynsym_id = 0; |
| 411 | user_id_t dynstr_id = 0; |
Greg Clayton | ad60bf4 | 2010-10-12 02:24:53 +0000 | [diff] [blame] | 412 | for (SectionHeaderCollIter sh_pos = m_section_headers.begin(); |
| 413 | sh_pos != m_section_headers.end(); ++sh_pos) |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 414 | { |
Greg Clayton | ad60bf4 | 2010-10-12 02:24:53 +0000 | [diff] [blame] | 415 | if (sh_pos->sh_type == SHT_DYNAMIC) |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 416 | { |
Greg Clayton | ad60bf4 | 2010-10-12 02:24:53 +0000 | [diff] [blame] | 417 | dynsym_id = SectionIndex(sh_pos); |
| 418 | dynstr_id = sh_pos->sh_link + 1; // Section ID's are 1 based. |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 419 | break; |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | if (!(dynsym_id && dynstr_id)) |
| 424 | return 0; |
| 425 | |
| 426 | SectionList *section_list = GetSectionList(); |
| 427 | if (!section_list) |
| 428 | return 0; |
| 429 | |
| 430 | // Resolve and load the dynamic table entries and corresponding string |
| 431 | // table. |
| 432 | Section *dynsym = section_list->FindSectionByID(dynsym_id).get(); |
| 433 | Section *dynstr = section_list->FindSectionByID(dynstr_id).get(); |
| 434 | if (!(dynsym && dynstr)) |
| 435 | return 0; |
| 436 | |
| 437 | DataExtractor dynsym_data; |
| 438 | DataExtractor dynstr_data; |
Greg Clayton | b5a8f14 | 2012-02-05 02:38:54 +0000 | [diff] [blame^] | 439 | if (ReadSectionData(dynsym, dynsym_data) && |
| 440 | ReadSectionData(dynstr, dynstr_data)) |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 441 | { |
| 442 | ELFDynamic symbol; |
| 443 | const unsigned section_size = dynsym_data.GetByteSize(); |
| 444 | unsigned offset = 0; |
| 445 | |
| 446 | // The only type of entries we are concerned with are tagged DT_NEEDED, |
| 447 | // yielding the name of a required library. |
| 448 | while (offset < section_size) |
| 449 | { |
| 450 | if (!symbol.Parse(dynsym_data, &offset)) |
| 451 | break; |
| 452 | |
| 453 | if (symbol.d_tag != DT_NEEDED) |
| 454 | continue; |
| 455 | |
| 456 | uint32_t str_index = static_cast<uint32_t>(symbol.d_val); |
| 457 | const char *lib_name = dynstr_data.PeekCStr(str_index); |
Greg Clayton | 537a7a8 | 2010-10-20 20:54:39 +0000 | [diff] [blame] | 458 | m_filespec_ap->Append(FileSpec(lib_name, true)); |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 459 | } |
| 460 | } |
| 461 | |
| 462 | return m_filespec_ap->GetSize(); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 463 | } |
| 464 | |
| 465 | //---------------------------------------------------------------------- |
| 466 | // ParseProgramHeaders |
| 467 | //---------------------------------------------------------------------- |
| 468 | size_t |
| 469 | ObjectFileELF::ParseProgramHeaders() |
| 470 | { |
| 471 | // We have already parsed the program headers |
| 472 | if (!m_program_headers.empty()) |
| 473 | return m_program_headers.size(); |
| 474 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 475 | // If there are no program headers to read we are done. |
| 476 | if (m_header.e_phnum == 0) |
| 477 | return 0; |
| 478 | |
| 479 | m_program_headers.resize(m_header.e_phnum); |
| 480 | if (m_program_headers.size() != m_header.e_phnum) |
| 481 | return 0; |
| 482 | |
| 483 | const size_t ph_size = m_header.e_phnum * m_header.e_phentsize; |
Greg Clayton | db2dc2b | 2012-01-12 05:25:17 +0000 | [diff] [blame] | 484 | const elf_off ph_offset = m_header.e_phoff; |
| 485 | DataExtractor data; |
| 486 | if (GetData (ph_offset, ph_size, data) != ph_size) |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 487 | return 0; |
| 488 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 489 | uint32_t idx; |
| 490 | uint32_t offset; |
| 491 | for (idx = 0, offset = 0; idx < m_header.e_phnum; ++idx) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 492 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 493 | if (m_program_headers[idx].Parse(data, &offset) == false) |
| 494 | break; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 495 | } |
| 496 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 497 | if (idx < m_program_headers.size()) |
| 498 | m_program_headers.resize(idx); |
| 499 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 500 | return m_program_headers.size(); |
| 501 | } |
| 502 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 503 | //---------------------------------------------------------------------- |
| 504 | // ParseSectionHeaders |
| 505 | //---------------------------------------------------------------------- |
| 506 | size_t |
| 507 | ObjectFileELF::ParseSectionHeaders() |
| 508 | { |
| 509 | // We have already parsed the section headers |
| 510 | if (!m_section_headers.empty()) |
| 511 | return m_section_headers.size(); |
| 512 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 513 | // If there are no section headers we are done. |
| 514 | if (m_header.e_shnum == 0) |
| 515 | return 0; |
| 516 | |
| 517 | m_section_headers.resize(m_header.e_shnum); |
| 518 | if (m_section_headers.size() != m_header.e_shnum) |
| 519 | return 0; |
| 520 | |
| 521 | const size_t sh_size = m_header.e_shnum * m_header.e_shentsize; |
Greg Clayton | db2dc2b | 2012-01-12 05:25:17 +0000 | [diff] [blame] | 522 | const elf_off sh_offset = m_header.e_shoff; |
| 523 | DataExtractor data; |
| 524 | if (GetData (sh_offset, sh_size, data) != sh_size) |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 525 | return 0; |
| 526 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 527 | uint32_t idx; |
| 528 | uint32_t offset; |
| 529 | for (idx = 0, offset = 0; idx < m_header.e_shnum; ++idx) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 530 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 531 | if (m_section_headers[idx].Parse(data, &offset) == false) |
| 532 | break; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 533 | } |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 534 | if (idx < m_section_headers.size()) |
| 535 | m_section_headers.resize(idx); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 536 | |
| 537 | return m_section_headers.size(); |
| 538 | } |
| 539 | |
| 540 | size_t |
| 541 | ObjectFileELF::GetSectionHeaderStringTable() |
| 542 | { |
| 543 | if (m_shstr_data.GetByteSize() == 0) |
| 544 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 545 | const unsigned strtab_idx = m_header.e_shstrndx; |
| 546 | |
| 547 | if (strtab_idx && strtab_idx < m_section_headers.size()) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 548 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 549 | const ELFSectionHeader &sheader = m_section_headers[strtab_idx]; |
| 550 | const size_t byte_size = sheader.sh_size; |
Greg Clayton | db2dc2b | 2012-01-12 05:25:17 +0000 | [diff] [blame] | 551 | const Elf64_Off offset = sheader.sh_offset; |
| 552 | m_shstr_data.SetData (m_data, offset, byte_size); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 553 | |
Greg Clayton | db2dc2b | 2012-01-12 05:25:17 +0000 | [diff] [blame] | 554 | if (m_shstr_data.GetByteSize() != byte_size) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 555 | return 0; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 556 | } |
| 557 | } |
| 558 | return m_shstr_data.GetByteSize(); |
| 559 | } |
| 560 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 561 | lldb::user_id_t |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 562 | ObjectFileELF::GetSectionIndexByName(const char *name) |
| 563 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 564 | if (!(ParseSectionHeaders() && GetSectionHeaderStringTable())) |
| 565 | return 0; |
| 566 | |
| 567 | // Search the collection of section headers for one with a matching name. |
| 568 | for (SectionHeaderCollIter I = m_section_headers.begin(); |
| 569 | I != m_section_headers.end(); ++I) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 570 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 571 | const char *sectionName = m_shstr_data.PeekCStr(I->sh_name); |
| 572 | |
| 573 | if (!sectionName) |
| 574 | return 0; |
| 575 | |
| 576 | if (strcmp(name, sectionName) != 0) |
| 577 | continue; |
| 578 | |
| 579 | return SectionIndex(I); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 580 | } |
| 581 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 582 | return 0; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 583 | } |
| 584 | |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 585 | const elf::ELFSectionHeader * |
| 586 | ObjectFileELF::GetSectionHeaderByIndex(lldb::user_id_t id) |
| 587 | { |
| 588 | if (!ParseSectionHeaders() || !id) |
| 589 | return NULL; |
| 590 | |
| 591 | if (--id < m_section_headers.size()) |
| 592 | return &m_section_headers[id]; |
| 593 | |
| 594 | return NULL; |
| 595 | } |
| 596 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 597 | SectionList * |
| 598 | ObjectFileELF::GetSectionList() |
| 599 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 600 | if (m_sections_ap.get()) |
| 601 | return m_sections_ap.get(); |
| 602 | |
| 603 | if (ParseSectionHeaders() && GetSectionHeaderStringTable()) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 604 | { |
| 605 | m_sections_ap.reset(new SectionList()); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 606 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 607 | for (SectionHeaderCollIter I = m_section_headers.begin(); |
| 608 | I != m_section_headers.end(); ++I) |
| 609 | { |
| 610 | const ELFSectionHeader &header = *I; |
| 611 | |
| 612 | ConstString name(m_shstr_data.PeekCStr(header.sh_name)); |
| 613 | uint64_t size = header.sh_type == SHT_NOBITS ? 0 : header.sh_size; |
| 614 | |
Greg Clayton | 32a8c7e | 2010-07-21 22:54:26 +0000 | [diff] [blame] | 615 | static ConstString g_sect_name_text (".text"); |
| 616 | static ConstString g_sect_name_data (".data"); |
| 617 | static ConstString g_sect_name_bss (".bss"); |
| 618 | static ConstString g_sect_name_dwarf_debug_abbrev (".debug_abbrev"); |
| 619 | static ConstString g_sect_name_dwarf_debug_aranges (".debug_aranges"); |
| 620 | static ConstString g_sect_name_dwarf_debug_frame (".debug_frame"); |
| 621 | static ConstString g_sect_name_dwarf_debug_info (".debug_info"); |
| 622 | static ConstString g_sect_name_dwarf_debug_line (".debug_line"); |
| 623 | static ConstString g_sect_name_dwarf_debug_loc (".debug_loc"); |
| 624 | static ConstString g_sect_name_dwarf_debug_macinfo (".debug_macinfo"); |
| 625 | static ConstString g_sect_name_dwarf_debug_pubnames (".debug_pubnames"); |
| 626 | static ConstString g_sect_name_dwarf_debug_pubtypes (".debug_pubtypes"); |
| 627 | static ConstString g_sect_name_dwarf_debug_ranges (".debug_ranges"); |
| 628 | static ConstString g_sect_name_dwarf_debug_str (".debug_str"); |
| 629 | static ConstString g_sect_name_eh_frame (".eh_frame"); |
| 630 | |
| 631 | SectionType sect_type = eSectionTypeOther; |
| 632 | |
| 633 | if (name == g_sect_name_text) sect_type = eSectionTypeCode; |
| 634 | else if (name == g_sect_name_data) sect_type = eSectionTypeData; |
| 635 | else if (name == g_sect_name_bss) sect_type = eSectionTypeZeroFill; |
| 636 | else if (name == g_sect_name_dwarf_debug_abbrev) sect_type = eSectionTypeDWARFDebugAbbrev; |
| 637 | else if (name == g_sect_name_dwarf_debug_aranges) sect_type = eSectionTypeDWARFDebugAranges; |
| 638 | else if (name == g_sect_name_dwarf_debug_frame) sect_type = eSectionTypeDWARFDebugFrame; |
| 639 | else if (name == g_sect_name_dwarf_debug_info) sect_type = eSectionTypeDWARFDebugInfo; |
| 640 | else if (name == g_sect_name_dwarf_debug_line) sect_type = eSectionTypeDWARFDebugLine; |
| 641 | else if (name == g_sect_name_dwarf_debug_loc) sect_type = eSectionTypeDWARFDebugLoc; |
| 642 | else if (name == g_sect_name_dwarf_debug_macinfo) sect_type = eSectionTypeDWARFDebugMacInfo; |
| 643 | else if (name == g_sect_name_dwarf_debug_pubnames) sect_type = eSectionTypeDWARFDebugPubNames; |
| 644 | else if (name == g_sect_name_dwarf_debug_pubtypes) sect_type = eSectionTypeDWARFDebugPubTypes; |
| 645 | else if (name == g_sect_name_dwarf_debug_ranges) sect_type = eSectionTypeDWARFDebugRanges; |
| 646 | else if (name == g_sect_name_dwarf_debug_str) sect_type = eSectionTypeDWARFDebugStr; |
| 647 | else if (name == g_sect_name_eh_frame) sect_type = eSectionTypeEHFrame; |
| 648 | |
| 649 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 650 | SectionSP section(new Section( |
Greg Clayton | 32a8c7e | 2010-07-21 22:54:26 +0000 | [diff] [blame] | 651 | 0, // Parent section. |
| 652 | GetModule(), // Module to which this section belongs. |
| 653 | SectionIndex(I), // Section ID. |
| 654 | name, // Section name. |
| 655 | sect_type, // Section type. |
| 656 | header.sh_addr, // VM address. |
| 657 | header.sh_size, // VM size in bytes of this section. |
| 658 | header.sh_offset, // Offset of this section in the file. |
| 659 | size, // Size of the section as found in the file. |
| 660 | header.sh_flags)); // Flags for this section. |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 661 | |
| 662 | m_sections_ap->AddSection(section); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 663 | } |
| 664 | } |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 665 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 666 | return m_sections_ap.get(); |
| 667 | } |
| 668 | |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 669 | static unsigned |
| 670 | ParseSymbols(Symtab *symtab, |
| 671 | user_id_t start_id, |
| 672 | SectionList *section_list, |
| 673 | const ELFSectionHeader *symtab_shdr, |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 674 | const DataExtractor &symtab_data, |
| 675 | const DataExtractor &strtab_data) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 676 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 677 | ELFSymbol symbol; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 678 | uint32_t offset = 0; |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 679 | const unsigned num_symbols = |
| 680 | symtab_data.GetByteSize() / symtab_shdr->sh_entsize; |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 681 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 682 | static ConstString text_section_name(".text"); |
| 683 | static ConstString init_section_name(".init"); |
| 684 | static ConstString fini_section_name(".fini"); |
| 685 | static ConstString ctors_section_name(".ctors"); |
| 686 | static ConstString dtors_section_name(".dtors"); |
| 687 | |
| 688 | static ConstString data_section_name(".data"); |
| 689 | static ConstString rodata_section_name(".rodata"); |
| 690 | static ConstString rodata1_section_name(".rodata1"); |
| 691 | static ConstString data2_section_name(".data1"); |
| 692 | static ConstString bss_section_name(".bss"); |
| 693 | |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 694 | unsigned i; |
| 695 | for (i = 0; i < num_symbols; ++i) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 696 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 697 | if (symbol.Parse(symtab_data, &offset) == false) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 698 | break; |
| 699 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 700 | Section *symbol_section = NULL; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 701 | SymbolType symbol_type = eSymbolTypeInvalid; |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 702 | Elf64_Half symbol_idx = symbol.st_shndx; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 703 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 704 | switch (symbol_idx) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 705 | { |
| 706 | case SHN_ABS: |
| 707 | symbol_type = eSymbolTypeAbsolute; |
| 708 | break; |
| 709 | case SHN_UNDEF: |
| 710 | symbol_type = eSymbolTypeUndefined; |
| 711 | break; |
| 712 | default: |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 713 | symbol_section = section_list->GetSectionAtIndex(symbol_idx).get(); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 714 | break; |
| 715 | } |
| 716 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 717 | switch (symbol.getType()) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 718 | { |
| 719 | default: |
| 720 | case STT_NOTYPE: |
| 721 | // The symbol's type is not specified. |
| 722 | break; |
| 723 | |
| 724 | case STT_OBJECT: |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 725 | // The symbol is associated with a data object, such as a variable, |
| 726 | // an array, etc. |
| 727 | symbol_type = eSymbolTypeData; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 728 | break; |
| 729 | |
| 730 | case STT_FUNC: |
| 731 | // The symbol is associated with a function or other executable code. |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 732 | symbol_type = eSymbolTypeCode; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 733 | break; |
| 734 | |
| 735 | case STT_SECTION: |
| 736 | // The symbol is associated with a section. Symbol table entries of |
| 737 | // this type exist primarily for relocation and normally have |
| 738 | // STB_LOCAL binding. |
| 739 | break; |
| 740 | |
| 741 | case STT_FILE: |
| 742 | // Conventionally, the symbol's name gives the name of the source |
| 743 | // file associated with the object file. A file symbol has STB_LOCAL |
| 744 | // binding, its section index is SHN_ABS, and it precedes the other |
| 745 | // STB_LOCAL symbols for the file, if it is present. |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 746 | symbol_type = eSymbolTypeObjectFile; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 747 | break; |
| 748 | } |
| 749 | |
| 750 | if (symbol_type == eSymbolTypeInvalid) |
| 751 | { |
| 752 | if (symbol_section) |
| 753 | { |
| 754 | const ConstString §_name = symbol_section->GetName(); |
| 755 | if (sect_name == text_section_name || |
| 756 | sect_name == init_section_name || |
| 757 | sect_name == fini_section_name || |
| 758 | sect_name == ctors_section_name || |
| 759 | sect_name == dtors_section_name) |
| 760 | { |
| 761 | symbol_type = eSymbolTypeCode; |
| 762 | } |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 763 | else if (sect_name == data_section_name || |
| 764 | sect_name == data2_section_name || |
| 765 | sect_name == rodata_section_name || |
| 766 | sect_name == rodata1_section_name || |
| 767 | sect_name == bss_section_name) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 768 | { |
| 769 | symbol_type = eSymbolTypeData; |
| 770 | } |
| 771 | } |
| 772 | } |
| 773 | |
| 774 | uint64_t symbol_value = symbol.st_value; |
| 775 | if (symbol_section != NULL) |
| 776 | symbol_value -= symbol_section->GetFileAddress(); |
| 777 | const char *symbol_name = strtab_data.PeekCStr(symbol.st_name); |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 778 | bool is_global = symbol.getBinding() == STB_GLOBAL; |
| 779 | uint32_t flags = symbol.st_other << 8 | symbol.st_info; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 780 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 781 | Symbol dc_symbol( |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 782 | i + start_id, // ID is the original symbol table index. |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 783 | symbol_name, // Symbol name. |
| 784 | false, // Is the symbol name mangled? |
| 785 | symbol_type, // Type of this symbol |
| 786 | is_global, // Is this globally visible? |
| 787 | false, // Is this symbol debug info? |
| 788 | false, // Is this symbol a trampoline? |
| 789 | false, // Is this symbol artificial? |
| 790 | symbol_section, // Section in which this symbol is defined or null. |
| 791 | symbol_value, // Offset in section or symbol value. |
| 792 | symbol.st_size, // Size in bytes of this symbol. |
| 793 | flags); // Symbol flags. |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 794 | symtab->AddSymbol(dc_symbol); |
| 795 | } |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 796 | |
| 797 | return i; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 798 | } |
| 799 | |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 800 | unsigned |
| 801 | ObjectFileELF::ParseSymbolTable(Symtab *symbol_table, user_id_t start_id, |
| 802 | const ELFSectionHeader *symtab_hdr, |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 803 | user_id_t symtab_id) |
| 804 | { |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 805 | assert(symtab_hdr->sh_type == SHT_SYMTAB || |
| 806 | symtab_hdr->sh_type == SHT_DYNSYM); |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 807 | |
| 808 | // Parse in the section list if needed. |
| 809 | SectionList *section_list = GetSectionList(); |
| 810 | if (!section_list) |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 811 | return 0; |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 812 | |
| 813 | // Section ID's are ones based. |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 814 | user_id_t strtab_id = symtab_hdr->sh_link + 1; |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 815 | |
| 816 | Section *symtab = section_list->FindSectionByID(symtab_id).get(); |
| 817 | Section *strtab = section_list->FindSectionByID(strtab_id).get(); |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 818 | unsigned num_symbols = 0; |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 819 | if (symtab && strtab) |
| 820 | { |
| 821 | DataExtractor symtab_data; |
| 822 | DataExtractor strtab_data; |
Greg Clayton | b5a8f14 | 2012-02-05 02:38:54 +0000 | [diff] [blame^] | 823 | if (ReadSectionData(symtab, symtab_data) && |
| 824 | ReadSectionData(strtab, strtab_data)) |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 825 | { |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 826 | num_symbols = ParseSymbols(symbol_table, start_id, |
| 827 | section_list, symtab_hdr, |
| 828 | symtab_data, strtab_data); |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 829 | } |
| 830 | } |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 831 | |
| 832 | return num_symbols; |
| 833 | } |
| 834 | |
| 835 | size_t |
| 836 | ObjectFileELF::ParseDynamicSymbols() |
| 837 | { |
| 838 | if (m_dynamic_symbols.size()) |
| 839 | return m_dynamic_symbols.size(); |
| 840 | |
| 841 | user_id_t dyn_id = GetSectionIndexByType(SHT_DYNAMIC); |
| 842 | if (!dyn_id) |
| 843 | return NULL; |
| 844 | |
| 845 | SectionList *section_list = GetSectionList(); |
| 846 | if (!section_list) |
| 847 | return NULL; |
| 848 | |
| 849 | Section *dynsym = section_list->FindSectionByID(dyn_id).get(); |
| 850 | if (!dynsym) |
| 851 | return NULL; |
| 852 | |
| 853 | ELFDynamic symbol; |
| 854 | DataExtractor dynsym_data; |
Greg Clayton | b5a8f14 | 2012-02-05 02:38:54 +0000 | [diff] [blame^] | 855 | if (ReadSectionData(dynsym, dynsym_data)) |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 856 | { |
| 857 | |
| 858 | const unsigned section_size = dynsym_data.GetByteSize(); |
| 859 | unsigned offset = 0; |
| 860 | unsigned cursor = 0; |
| 861 | |
| 862 | while (cursor < section_size) |
| 863 | { |
| 864 | offset = cursor; |
| 865 | if (!symbol.Parse(dynsym_data, &cursor)) |
| 866 | break; |
| 867 | |
| 868 | m_dynamic_symbols.push_back(symbol); |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | return m_dynamic_symbols.size(); |
| 873 | } |
| 874 | |
| 875 | const ELFDynamic * |
| 876 | ObjectFileELF::FindDynamicSymbol(unsigned tag) |
| 877 | { |
| 878 | if (!ParseDynamicSymbols()) |
| 879 | return NULL; |
| 880 | |
| 881 | SectionList *section_list = GetSectionList(); |
| 882 | if (!section_list) |
| 883 | return 0; |
| 884 | |
| 885 | DynamicSymbolCollIter I = m_dynamic_symbols.begin(); |
| 886 | DynamicSymbolCollIter E = m_dynamic_symbols.end(); |
| 887 | for ( ; I != E; ++I) |
| 888 | { |
| 889 | ELFDynamic *symbol = &*I; |
| 890 | |
| 891 | if (symbol->d_tag == tag) |
| 892 | return symbol; |
| 893 | } |
| 894 | |
| 895 | return NULL; |
| 896 | } |
| 897 | |
| 898 | Section * |
| 899 | ObjectFileELF::PLTSection() |
| 900 | { |
| 901 | const ELFDynamic *symbol = FindDynamicSymbol(DT_JMPREL); |
| 902 | SectionList *section_list = GetSectionList(); |
| 903 | |
| 904 | if (symbol && section_list) |
| 905 | { |
| 906 | addr_t addr = symbol->d_ptr; |
| 907 | return section_list->FindSectionContainingFileAddress(addr).get(); |
| 908 | } |
| 909 | |
| 910 | return NULL; |
| 911 | } |
| 912 | |
| 913 | unsigned |
| 914 | ObjectFileELF::PLTRelocationType() |
| 915 | { |
| 916 | const ELFDynamic *symbol = FindDynamicSymbol(DT_PLTREL); |
| 917 | |
| 918 | if (symbol) |
| 919 | return symbol->d_val; |
| 920 | |
| 921 | return 0; |
| 922 | } |
| 923 | |
| 924 | static unsigned |
| 925 | ParsePLTRelocations(Symtab *symbol_table, |
| 926 | user_id_t start_id, |
| 927 | unsigned rel_type, |
| 928 | const ELFHeader *hdr, |
| 929 | const ELFSectionHeader *rel_hdr, |
| 930 | const ELFSectionHeader *plt_hdr, |
| 931 | const ELFSectionHeader *sym_hdr, |
| 932 | Section *plt_section, |
| 933 | DataExtractor &rel_data, |
| 934 | DataExtractor &symtab_data, |
| 935 | DataExtractor &strtab_data) |
| 936 | { |
| 937 | ELFRelocation rel(rel_type); |
| 938 | ELFSymbol symbol; |
| 939 | uint32_t offset = 0; |
| 940 | const unsigned plt_entsize = plt_hdr->sh_entsize; |
| 941 | const unsigned num_relocations = rel_hdr->sh_size / rel_hdr->sh_entsize; |
| 942 | |
| 943 | typedef unsigned (*reloc_info_fn)(const ELFRelocation &rel); |
| 944 | reloc_info_fn reloc_type; |
| 945 | reloc_info_fn reloc_symbol; |
| 946 | |
| 947 | if (hdr->Is32Bit() == 4) |
| 948 | { |
| 949 | reloc_type = ELFRelocation::RelocType32; |
| 950 | reloc_symbol = ELFRelocation::RelocSymbol32; |
| 951 | } |
| 952 | else |
| 953 | { |
| 954 | reloc_type = ELFRelocation::RelocType64; |
| 955 | reloc_symbol = ELFRelocation::RelocSymbol64; |
| 956 | } |
| 957 | |
| 958 | unsigned slot_type = hdr->GetRelocationJumpSlotType(); |
| 959 | unsigned i; |
| 960 | for (i = 0; i < num_relocations; ++i) |
| 961 | { |
| 962 | if (rel.Parse(rel_data, &offset) == false) |
| 963 | break; |
| 964 | |
| 965 | if (reloc_type(rel) != slot_type) |
| 966 | continue; |
| 967 | |
| 968 | unsigned symbol_offset = reloc_symbol(rel) * sym_hdr->sh_entsize; |
| 969 | uint64_t plt_index = (i + 1) * plt_entsize; |
| 970 | |
| 971 | if (!symbol.Parse(symtab_data, &symbol_offset)) |
| 972 | break; |
| 973 | |
| 974 | const char *symbol_name = strtab_data.PeekCStr(symbol.st_name); |
| 975 | |
| 976 | Symbol jump_symbol( |
| 977 | i + start_id, // Symbol table index |
| 978 | symbol_name, // symbol name. |
| 979 | false, // is the symbol name mangled? |
| 980 | eSymbolTypeTrampoline, // Type of this symbol |
| 981 | false, // Is this globally visible? |
| 982 | false, // Is this symbol debug info? |
| 983 | true, // Is this symbol a trampoline? |
| 984 | true, // Is this symbol artificial? |
| 985 | plt_section, // Section in which this symbol is defined or null. |
| 986 | plt_index, // Offset in section or symbol value. |
| 987 | plt_entsize, // Size in bytes of this symbol. |
| 988 | 0); // Symbol flags. |
| 989 | |
| 990 | symbol_table->AddSymbol(jump_symbol); |
| 991 | } |
| 992 | |
| 993 | return i; |
| 994 | } |
| 995 | |
| 996 | unsigned |
| 997 | ObjectFileELF::ParseTrampolineSymbols(Symtab *symbol_table, |
| 998 | user_id_t start_id, |
| 999 | const ELFSectionHeader *rel_hdr, |
| 1000 | user_id_t rel_id) |
| 1001 | { |
| 1002 | assert(rel_hdr->sh_type == SHT_RELA || rel_hdr->sh_type == SHT_REL); |
| 1003 | |
| 1004 | // The link field points to the asscoiated symbol table. The info field |
| 1005 | // points to the section holding the plt. |
| 1006 | user_id_t symtab_id = rel_hdr->sh_link; |
| 1007 | user_id_t plt_id = rel_hdr->sh_info; |
| 1008 | |
| 1009 | if (!symtab_id || !plt_id) |
| 1010 | return 0; |
| 1011 | |
| 1012 | // Section ID's are ones based; |
| 1013 | symtab_id++; |
| 1014 | plt_id++; |
| 1015 | |
| 1016 | const ELFSectionHeader *plt_hdr = GetSectionHeaderByIndex(plt_id); |
| 1017 | if (!plt_hdr) |
| 1018 | return 0; |
| 1019 | |
| 1020 | const ELFSectionHeader *sym_hdr = GetSectionHeaderByIndex(symtab_id); |
| 1021 | if (!sym_hdr) |
| 1022 | return 0; |
| 1023 | |
| 1024 | SectionList *section_list = GetSectionList(); |
| 1025 | if (!section_list) |
| 1026 | return 0; |
| 1027 | |
| 1028 | Section *rel_section = section_list->FindSectionByID(rel_id).get(); |
| 1029 | if (!rel_section) |
| 1030 | return 0; |
| 1031 | |
| 1032 | Section *plt_section = section_list->FindSectionByID(plt_id).get(); |
| 1033 | if (!plt_section) |
| 1034 | return 0; |
| 1035 | |
| 1036 | Section *symtab = section_list->FindSectionByID(symtab_id).get(); |
| 1037 | if (!symtab) |
| 1038 | return 0; |
| 1039 | |
| 1040 | Section *strtab = section_list->FindSectionByID(sym_hdr->sh_link + 1).get(); |
| 1041 | if (!strtab) |
| 1042 | return 0; |
| 1043 | |
| 1044 | DataExtractor rel_data; |
Greg Clayton | b5a8f14 | 2012-02-05 02:38:54 +0000 | [diff] [blame^] | 1045 | if (!ReadSectionData(rel_section, rel_data)) |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 1046 | return 0; |
| 1047 | |
| 1048 | DataExtractor symtab_data; |
Greg Clayton | b5a8f14 | 2012-02-05 02:38:54 +0000 | [diff] [blame^] | 1049 | if (!ReadSectionData(symtab, symtab_data)) |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 1050 | return 0; |
| 1051 | |
| 1052 | DataExtractor strtab_data; |
Greg Clayton | b5a8f14 | 2012-02-05 02:38:54 +0000 | [diff] [blame^] | 1053 | if (!ReadSectionData(strtab, strtab_data)) |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 1054 | return 0; |
| 1055 | |
| 1056 | unsigned rel_type = PLTRelocationType(); |
| 1057 | if (!rel_type) |
| 1058 | return 0; |
| 1059 | |
| 1060 | return ParsePLTRelocations(symbol_table, start_id, rel_type, |
| 1061 | &m_header, rel_hdr, plt_hdr, sym_hdr, |
| 1062 | plt_section, |
| 1063 | rel_data, symtab_data, strtab_data); |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1064 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1065 | |
| 1066 | Symtab * |
| 1067 | ObjectFileELF::GetSymtab() |
| 1068 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1069 | if (m_symtab_ap.get()) |
| 1070 | return m_symtab_ap.get(); |
| 1071 | |
| 1072 | Symtab *symbol_table = new Symtab(this); |
| 1073 | m_symtab_ap.reset(symbol_table); |
| 1074 | |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 1075 | Mutex::Locker locker(symbol_table->GetMutex()); |
Greg Clayton | 8d3802d | 2010-10-08 04:20:14 +0000 | [diff] [blame] | 1076 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1077 | if (!(ParseSectionHeaders() && GetSectionHeaderStringTable())) |
| 1078 | return symbol_table; |
| 1079 | |
| 1080 | // Locate and parse all linker symbol tables. |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 1081 | uint64_t symbol_id = 0; |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1082 | for (SectionHeaderCollIter I = m_section_headers.begin(); |
| 1083 | I != m_section_headers.end(); ++I) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1084 | { |
Peter Collingbourne | 182c286 | 2011-06-03 20:39:58 +0000 | [diff] [blame] | 1085 | if (I->sh_type == SHT_SYMTAB || I->sh_type == SHT_DYNSYM) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1086 | { |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 1087 | const ELFSectionHeader &symtab_header = *I; |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1088 | user_id_t section_id = SectionIndex(I); |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 1089 | symbol_id += ParseSymbolTable(symbol_table, symbol_id, |
| 1090 | &symtab_header, section_id); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1091 | } |
| 1092 | } |
Stephen Wilson | ce47732 | 2011-03-30 16:07:05 +0000 | [diff] [blame] | 1093 | |
| 1094 | // Synthesize trampoline symbols to help navigate the PLT. |
| 1095 | Section *reloc_section = PLTSection(); |
| 1096 | if (reloc_section) |
| 1097 | { |
| 1098 | user_id_t reloc_id = reloc_section->GetID(); |
| 1099 | const ELFSectionHeader *reloc_header = GetSectionHeaderByIndex(reloc_id); |
| 1100 | assert(reloc_header); |
| 1101 | |
| 1102 | ParseTrampolineSymbols(symbol_table, symbol_id, reloc_header, reloc_id); |
| 1103 | } |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1104 | |
| 1105 | return symbol_table; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1106 | } |
| 1107 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1108 | //===----------------------------------------------------------------------===// |
| 1109 | // Dump |
| 1110 | // |
| 1111 | // Dump the specifics of the runtime file container (such as any headers |
| 1112 | // segments, sections, etc). |
| 1113 | //---------------------------------------------------------------------- |
| 1114 | void |
| 1115 | ObjectFileELF::Dump(Stream *s) |
| 1116 | { |
| 1117 | DumpELFHeader(s, m_header); |
| 1118 | s->EOL(); |
| 1119 | DumpELFProgramHeaders(s); |
| 1120 | s->EOL(); |
| 1121 | DumpELFSectionHeaders(s); |
| 1122 | s->EOL(); |
| 1123 | SectionList *section_list = GetSectionList(); |
| 1124 | if (section_list) |
Greg Clayton | 58e844b | 2010-12-08 05:08:21 +0000 | [diff] [blame] | 1125 | section_list->Dump(s, NULL, true, UINT32_MAX); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1126 | Symtab *symtab = GetSymtab(); |
| 1127 | if (symtab) |
Greg Clayton | b344843 | 2011-03-24 21:19:54 +0000 | [diff] [blame] | 1128 | symtab->Dump(s, NULL, eSortOrderNone); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1129 | s->EOL(); |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1130 | DumpDependentModules(s); |
| 1131 | s->EOL(); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1132 | } |
| 1133 | |
| 1134 | //---------------------------------------------------------------------- |
| 1135 | // DumpELFHeader |
| 1136 | // |
| 1137 | // Dump the ELF header to the specified output stream |
| 1138 | //---------------------------------------------------------------------- |
| 1139 | void |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1140 | ObjectFileELF::DumpELFHeader(Stream *s, const ELFHeader &header) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1141 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1142 | s->PutCString("ELF Header\n"); |
| 1143 | s->Printf("e_ident[EI_MAG0 ] = 0x%2.2x\n", header.e_ident[EI_MAG0]); |
| 1144 | s->Printf("e_ident[EI_MAG1 ] = 0x%2.2x '%c'\n", |
| 1145 | header.e_ident[EI_MAG1], header.e_ident[EI_MAG1]); |
| 1146 | s->Printf("e_ident[EI_MAG2 ] = 0x%2.2x '%c'\n", |
| 1147 | header.e_ident[EI_MAG2], header.e_ident[EI_MAG2]); |
| 1148 | s->Printf("e_ident[EI_MAG3 ] = 0x%2.2x '%c'\n", |
| 1149 | header.e_ident[EI_MAG3], header.e_ident[EI_MAG3]); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1150 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1151 | s->Printf("e_ident[EI_CLASS ] = 0x%2.2x\n", header.e_ident[EI_CLASS]); |
| 1152 | s->Printf("e_ident[EI_DATA ] = 0x%2.2x ", header.e_ident[EI_DATA]); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1153 | DumpELFHeader_e_ident_EI_DATA(s, header.e_ident[EI_DATA]); |
| 1154 | s->Printf ("\ne_ident[EI_VERSION] = 0x%2.2x\n", header.e_ident[EI_VERSION]); |
| 1155 | s->Printf ("e_ident[EI_PAD ] = 0x%2.2x\n", header.e_ident[EI_PAD]); |
| 1156 | |
| 1157 | s->Printf("e_type = 0x%4.4x ", header.e_type); |
| 1158 | DumpELFHeader_e_type(s, header.e_type); |
| 1159 | s->Printf("\ne_machine = 0x%4.4x\n", header.e_machine); |
| 1160 | s->Printf("e_version = 0x%8.8x\n", header.e_version); |
Jason Molenda | 7e5fa7f | 2011-09-20 21:44:10 +0000 | [diff] [blame] | 1161 | s->Printf("e_entry = 0x%8.8llx\n", header.e_entry); |
| 1162 | s->Printf("e_phoff = 0x%8.8llx\n", header.e_phoff); |
| 1163 | s->Printf("e_shoff = 0x%8.8llx\n", header.e_shoff); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1164 | s->Printf("e_flags = 0x%8.8x\n", header.e_flags); |
| 1165 | s->Printf("e_ehsize = 0x%4.4x\n", header.e_ehsize); |
| 1166 | s->Printf("e_phentsize = 0x%4.4x\n", header.e_phentsize); |
| 1167 | s->Printf("e_phnum = 0x%4.4x\n", header.e_phnum); |
| 1168 | s->Printf("e_shentsize = 0x%4.4x\n", header.e_shentsize); |
| 1169 | s->Printf("e_shnum = 0x%4.4x\n", header.e_shnum); |
| 1170 | s->Printf("e_shstrndx = 0x%4.4x\n", header.e_shstrndx); |
| 1171 | } |
| 1172 | |
| 1173 | //---------------------------------------------------------------------- |
| 1174 | // DumpELFHeader_e_type |
| 1175 | // |
| 1176 | // Dump an token value for the ELF header member e_type |
| 1177 | //---------------------------------------------------------------------- |
| 1178 | void |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1179 | ObjectFileELF::DumpELFHeader_e_type(Stream *s, elf_half e_type) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1180 | { |
| 1181 | switch (e_type) |
| 1182 | { |
| 1183 | case ET_NONE: *s << "ET_NONE"; break; |
| 1184 | case ET_REL: *s << "ET_REL"; break; |
| 1185 | case ET_EXEC: *s << "ET_EXEC"; break; |
| 1186 | case ET_DYN: *s << "ET_DYN"; break; |
| 1187 | case ET_CORE: *s << "ET_CORE"; break; |
| 1188 | default: |
| 1189 | break; |
| 1190 | } |
| 1191 | } |
| 1192 | |
| 1193 | //---------------------------------------------------------------------- |
| 1194 | // DumpELFHeader_e_ident_EI_DATA |
| 1195 | // |
| 1196 | // Dump an token value for the ELF header member e_ident[EI_DATA] |
| 1197 | //---------------------------------------------------------------------- |
| 1198 | void |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1199 | ObjectFileELF::DumpELFHeader_e_ident_EI_DATA(Stream *s, unsigned char ei_data) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1200 | { |
| 1201 | switch (ei_data) |
| 1202 | { |
| 1203 | case ELFDATANONE: *s << "ELFDATANONE"; break; |
| 1204 | case ELFDATA2LSB: *s << "ELFDATA2LSB - Little Endian"; break; |
| 1205 | case ELFDATA2MSB: *s << "ELFDATA2MSB - Big Endian"; break; |
| 1206 | default: |
| 1207 | break; |
| 1208 | } |
| 1209 | } |
| 1210 | |
| 1211 | |
| 1212 | //---------------------------------------------------------------------- |
| 1213 | // DumpELFProgramHeader |
| 1214 | // |
| 1215 | // Dump a single ELF program header to the specified output stream |
| 1216 | //---------------------------------------------------------------------- |
| 1217 | void |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1218 | ObjectFileELF::DumpELFProgramHeader(Stream *s, const ELFProgramHeader &ph) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1219 | { |
| 1220 | DumpELFProgramHeader_p_type(s, ph.p_type); |
Jason Molenda | 7e5fa7f | 2011-09-20 21:44:10 +0000 | [diff] [blame] | 1221 | s->Printf(" %8.8llx %8.8llx %8.8llx", ph.p_offset, ph.p_vaddr, ph.p_paddr); |
| 1222 | s->Printf(" %8.8llx %8.8llx %8.8x (", ph.p_filesz, ph.p_memsz, ph.p_flags); |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1223 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1224 | DumpELFProgramHeader_p_flags(s, ph.p_flags); |
Jason Molenda | 7e5fa7f | 2011-09-20 21:44:10 +0000 | [diff] [blame] | 1225 | s->Printf(") %8.8llx", ph.p_align); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1226 | } |
| 1227 | |
| 1228 | //---------------------------------------------------------------------- |
| 1229 | // DumpELFProgramHeader_p_type |
| 1230 | // |
| 1231 | // Dump an token value for the ELF program header member p_type which |
| 1232 | // describes the type of the program header |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1233 | // ---------------------------------------------------------------------- |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1234 | void |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1235 | ObjectFileELF::DumpELFProgramHeader_p_type(Stream *s, elf_word p_type) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1236 | { |
| 1237 | const int kStrWidth = 10; |
| 1238 | switch (p_type) |
| 1239 | { |
| 1240 | CASE_AND_STREAM(s, PT_NULL , kStrWidth); |
| 1241 | CASE_AND_STREAM(s, PT_LOAD , kStrWidth); |
| 1242 | CASE_AND_STREAM(s, PT_DYNAMIC , kStrWidth); |
| 1243 | CASE_AND_STREAM(s, PT_INTERP , kStrWidth); |
| 1244 | CASE_AND_STREAM(s, PT_NOTE , kStrWidth); |
| 1245 | CASE_AND_STREAM(s, PT_SHLIB , kStrWidth); |
| 1246 | CASE_AND_STREAM(s, PT_PHDR , kStrWidth); |
| 1247 | default: |
| 1248 | s->Printf("0x%8.8x%*s", p_type, kStrWidth - 10, ""); |
| 1249 | break; |
| 1250 | } |
| 1251 | } |
| 1252 | |
| 1253 | |
| 1254 | //---------------------------------------------------------------------- |
| 1255 | // DumpELFProgramHeader_p_flags |
| 1256 | // |
| 1257 | // Dump an token value for the ELF program header member p_flags |
| 1258 | //---------------------------------------------------------------------- |
| 1259 | void |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1260 | ObjectFileELF::DumpELFProgramHeader_p_flags(Stream *s, elf_word p_flags) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1261 | { |
| 1262 | *s << ((p_flags & PF_X) ? "PF_X" : " ") |
| 1263 | << (((p_flags & PF_X) && (p_flags & PF_W)) ? '+' : ' ') |
| 1264 | << ((p_flags & PF_W) ? "PF_W" : " ") |
| 1265 | << (((p_flags & PF_W) && (p_flags & PF_R)) ? '+' : ' ') |
| 1266 | << ((p_flags & PF_R) ? "PF_R" : " "); |
| 1267 | } |
| 1268 | |
| 1269 | //---------------------------------------------------------------------- |
| 1270 | // DumpELFProgramHeaders |
| 1271 | // |
| 1272 | // Dump all of the ELF program header to the specified output stream |
| 1273 | //---------------------------------------------------------------------- |
| 1274 | void |
| 1275 | ObjectFileELF::DumpELFProgramHeaders(Stream *s) |
| 1276 | { |
| 1277 | if (ParseProgramHeaders()) |
| 1278 | { |
| 1279 | s->PutCString("Program Headers\n"); |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1280 | s->PutCString("IDX p_type p_offset p_vaddr p_paddr " |
| 1281 | "p_filesz p_memsz p_flags p_align\n"); |
| 1282 | s->PutCString("==== ---------- -------- -------- -------- " |
| 1283 | "-------- -------- ------------------------- --------\n"); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1284 | |
| 1285 | uint32_t idx = 0; |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1286 | for (ProgramHeaderCollConstIter I = m_program_headers.begin(); |
| 1287 | I != m_program_headers.end(); ++I, ++idx) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1288 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1289 | s->Printf("[%2u] ", idx); |
| 1290 | ObjectFileELF::DumpELFProgramHeader(s, *I); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1291 | s->EOL(); |
| 1292 | } |
| 1293 | } |
| 1294 | } |
| 1295 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1296 | //---------------------------------------------------------------------- |
| 1297 | // DumpELFSectionHeader |
| 1298 | // |
| 1299 | // Dump a single ELF section header to the specified output stream |
| 1300 | //---------------------------------------------------------------------- |
| 1301 | void |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1302 | ObjectFileELF::DumpELFSectionHeader(Stream *s, const ELFSectionHeader &sh) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1303 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1304 | s->Printf("%8.8x ", sh.sh_name); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1305 | DumpELFSectionHeader_sh_type(s, sh.sh_type); |
Jason Molenda | 7e5fa7f | 2011-09-20 21:44:10 +0000 | [diff] [blame] | 1306 | s->Printf(" %8.8llx (", sh.sh_flags); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1307 | DumpELFSectionHeader_sh_flags(s, sh.sh_flags); |
Jason Molenda | 7e5fa7f | 2011-09-20 21:44:10 +0000 | [diff] [blame] | 1308 | s->Printf(") %8.8llx %8.8llx %8.8llx", sh.sh_addr, sh.sh_offset, sh.sh_size); |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1309 | s->Printf(" %8.8x %8.8x", sh.sh_link, sh.sh_info); |
Jason Molenda | 7e5fa7f | 2011-09-20 21:44:10 +0000 | [diff] [blame] | 1310 | s->Printf(" %8.8llx %8.8llx", sh.sh_addralign, sh.sh_entsize); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1311 | } |
| 1312 | |
| 1313 | //---------------------------------------------------------------------- |
| 1314 | // DumpELFSectionHeader_sh_type |
| 1315 | // |
| 1316 | // Dump an token value for the ELF section header member sh_type which |
| 1317 | // describes the type of the section |
| 1318 | //---------------------------------------------------------------------- |
| 1319 | void |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1320 | ObjectFileELF::DumpELFSectionHeader_sh_type(Stream *s, elf_word sh_type) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1321 | { |
| 1322 | const int kStrWidth = 12; |
| 1323 | switch (sh_type) |
| 1324 | { |
| 1325 | CASE_AND_STREAM(s, SHT_NULL , kStrWidth); |
| 1326 | CASE_AND_STREAM(s, SHT_PROGBITS , kStrWidth); |
| 1327 | CASE_AND_STREAM(s, SHT_SYMTAB , kStrWidth); |
| 1328 | CASE_AND_STREAM(s, SHT_STRTAB , kStrWidth); |
| 1329 | CASE_AND_STREAM(s, SHT_RELA , kStrWidth); |
| 1330 | CASE_AND_STREAM(s, SHT_HASH , kStrWidth); |
| 1331 | CASE_AND_STREAM(s, SHT_DYNAMIC , kStrWidth); |
| 1332 | CASE_AND_STREAM(s, SHT_NOTE , kStrWidth); |
| 1333 | CASE_AND_STREAM(s, SHT_NOBITS , kStrWidth); |
| 1334 | CASE_AND_STREAM(s, SHT_REL , kStrWidth); |
| 1335 | CASE_AND_STREAM(s, SHT_SHLIB , kStrWidth); |
| 1336 | CASE_AND_STREAM(s, SHT_DYNSYM , kStrWidth); |
| 1337 | CASE_AND_STREAM(s, SHT_LOPROC , kStrWidth); |
| 1338 | CASE_AND_STREAM(s, SHT_HIPROC , kStrWidth); |
| 1339 | CASE_AND_STREAM(s, SHT_LOUSER , kStrWidth); |
| 1340 | CASE_AND_STREAM(s, SHT_HIUSER , kStrWidth); |
| 1341 | default: |
| 1342 | s->Printf("0x%8.8x%*s", sh_type, kStrWidth - 10, ""); |
| 1343 | break; |
| 1344 | } |
| 1345 | } |
| 1346 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1347 | //---------------------------------------------------------------------- |
| 1348 | // DumpELFSectionHeader_sh_flags |
| 1349 | // |
| 1350 | // Dump an token value for the ELF section header member sh_flags |
| 1351 | //---------------------------------------------------------------------- |
| 1352 | void |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1353 | ObjectFileELF::DumpELFSectionHeader_sh_flags(Stream *s, elf_word sh_flags) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1354 | { |
| 1355 | *s << ((sh_flags & SHF_WRITE) ? "WRITE" : " ") |
| 1356 | << (((sh_flags & SHF_WRITE) && (sh_flags & SHF_ALLOC)) ? '+' : ' ') |
| 1357 | << ((sh_flags & SHF_ALLOC) ? "ALLOC" : " ") |
| 1358 | << (((sh_flags & SHF_ALLOC) && (sh_flags & SHF_EXECINSTR)) ? '+' : ' ') |
| 1359 | << ((sh_flags & SHF_EXECINSTR) ? "EXECINSTR" : " "); |
| 1360 | } |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1361 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1362 | //---------------------------------------------------------------------- |
| 1363 | // DumpELFSectionHeaders |
| 1364 | // |
| 1365 | // Dump all of the ELF section header to the specified output stream |
| 1366 | //---------------------------------------------------------------------- |
| 1367 | void |
| 1368 | ObjectFileELF::DumpELFSectionHeaders(Stream *s) |
| 1369 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1370 | if (!(ParseSectionHeaders() && GetSectionHeaderStringTable())) |
| 1371 | return; |
| 1372 | |
| 1373 | s->PutCString("Section Headers\n"); |
| 1374 | s->PutCString("IDX name type flags " |
| 1375 | "addr offset size link info addralgn " |
| 1376 | "entsize Name\n"); |
| 1377 | s->PutCString("==== -------- ------------ -------------------------------- " |
| 1378 | "-------- -------- -------- -------- -------- -------- " |
| 1379 | "-------- ====================\n"); |
| 1380 | |
| 1381 | uint32_t idx = 0; |
| 1382 | for (SectionHeaderCollConstIter I = m_section_headers.begin(); |
| 1383 | I != m_section_headers.end(); ++I, ++idx) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1384 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1385 | s->Printf("[%2u] ", idx); |
| 1386 | ObjectFileELF::DumpELFSectionHeader(s, *I); |
| 1387 | const char* section_name = m_shstr_data.PeekCStr(I->sh_name); |
| 1388 | if (section_name) |
| 1389 | *s << ' ' << section_name << "\n"; |
| 1390 | } |
| 1391 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1392 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1393 | void |
| 1394 | ObjectFileELF::DumpDependentModules(lldb_private::Stream *s) |
| 1395 | { |
| 1396 | size_t num_modules = ParseDependentModules(); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1397 | |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1398 | if (num_modules > 0) |
| 1399 | { |
| 1400 | s->PutCString("Dependent Modules:\n"); |
| 1401 | for (unsigned i = 0; i < num_modules; ++i) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1402 | { |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1403 | const FileSpec &spec = m_filespec_ap->GetFileSpecAtIndex(i); |
| 1404 | s->Printf(" %s\n", spec.GetFilename().GetCString()); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1405 | } |
| 1406 | } |
| 1407 | } |
| 1408 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1409 | bool |
Greg Clayton | 395fc33 | 2011-02-15 21:59:32 +0000 | [diff] [blame] | 1410 | ObjectFileELF::GetArchitecture (ArchSpec &arch) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1411 | { |
Stephen Wilson | f7cc64d | 2011-02-24 19:16:15 +0000 | [diff] [blame] | 1412 | if (!ParseHeader()) |
| 1413 | return false; |
| 1414 | |
Greg Clayton | b344843 | 2011-03-24 21:19:54 +0000 | [diff] [blame] | 1415 | arch.SetArchitecture (eArchTypeELF, m_header.e_machine, LLDB_INVALID_CPUTYPE); |
Greg Clayton | 940b103 | 2011-02-23 00:35:02 +0000 | [diff] [blame] | 1416 | arch.GetTriple().setOSName (Host::GetOSString().GetCString()); |
| 1417 | arch.GetTriple().setVendorName(Host::GetVendorString().GetCString()); |
Stephen Wilson | ddd2962 | 2010-07-13 23:07:23 +0000 | [diff] [blame] | 1418 | return true; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1419 | } |
| 1420 | |
Greg Clayton | ca31997 | 2011-07-09 00:41:34 +0000 | [diff] [blame] | 1421 | ObjectFile::Type |
| 1422 | ObjectFileELF::CalculateType() |
| 1423 | { |
| 1424 | switch (m_header.e_type) |
| 1425 | { |
| 1426 | case llvm::ELF::ET_NONE: |
| 1427 | // 0 - No file type |
| 1428 | return eTypeUnknown; |
| 1429 | |
| 1430 | case llvm::ELF::ET_REL: |
| 1431 | // 1 - Relocatable file |
| 1432 | return eTypeObjectFile; |
| 1433 | |
| 1434 | case llvm::ELF::ET_EXEC: |
| 1435 | // 2 - Executable file |
| 1436 | return eTypeExecutable; |
| 1437 | |
| 1438 | case llvm::ELF::ET_DYN: |
| 1439 | // 3 - Shared object file |
| 1440 | return eTypeSharedLibrary; |
| 1441 | |
| 1442 | case ET_CORE: |
| 1443 | // 4 - Core file |
| 1444 | return eTypeCoreFile; |
| 1445 | |
| 1446 | default: |
| 1447 | break; |
| 1448 | } |
| 1449 | return eTypeUnknown; |
| 1450 | } |
| 1451 | |
| 1452 | ObjectFile::Strata |
| 1453 | ObjectFileELF::CalculateStrata() |
| 1454 | { |
| 1455 | switch (m_header.e_type) |
| 1456 | { |
| 1457 | case llvm::ELF::ET_NONE: |
| 1458 | // 0 - No file type |
| 1459 | return eStrataUnknown; |
| 1460 | |
| 1461 | case llvm::ELF::ET_REL: |
| 1462 | // 1 - Relocatable file |
| 1463 | return eStrataUnknown; |
| 1464 | |
| 1465 | case llvm::ELF::ET_EXEC: |
| 1466 | // 2 - Executable file |
| 1467 | // TODO: is there any way to detect that an executable is a kernel |
| 1468 | // related executable by inspecting the program headers, section |
| 1469 | // headers, symbols, or any other flag bits??? |
| 1470 | return eStrataUser; |
| 1471 | |
| 1472 | case llvm::ELF::ET_DYN: |
| 1473 | // 3 - Shared object file |
| 1474 | // TODO: is there any way to detect that an shared library is a kernel |
| 1475 | // related executable by inspecting the program headers, section |
| 1476 | // headers, symbols, or any other flag bits??? |
| 1477 | return eStrataUnknown; |
| 1478 | |
| 1479 | case ET_CORE: |
| 1480 | // 4 - Core file |
| 1481 | // TODO: is there any way to detect that an core file is a kernel |
| 1482 | // related executable by inspecting the program headers, section |
| 1483 | // headers, symbols, or any other flag bits??? |
| 1484 | return eStrataUnknown; |
| 1485 | |
| 1486 | default: |
| 1487 | break; |
| 1488 | } |
| 1489 | return eStrataUnknown; |
| 1490 | } |
| 1491 | |