1 //===-- ObjectFile.cpp ------------------------------------------*- C++ -*-===// 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 "lldb/lldb-private.h" 11 #include "lldb/lldb-private-log.h" 12 #include "lldb/Core/Log.h" 13 #include "lldb/Core/Module.h" 14 #include "lldb/Core/PluginManager.h" 15 #include "lldb/Core/RegularExpression.h" 16 #include "lldb/Core/Timer.h" 17 #include "lldb/Symbol/ObjectFile.h" 18 #include "lldb/Symbol/ObjectContainer.h" 19 #include "lldb/Symbol/SymbolFile.h" 20 21 using namespace lldb; 22 using namespace lldb_private; 23 24 ObjectFileSP 25 ObjectFile::FindPlugin (Module* module, const FileSpec* file, addr_t file_offset, addr_t file_size) 26 { 27 Timer scoped_timer (__PRETTY_FUNCTION__, 28 "ObjectFile::FindPlugin (module = %s/%s, file = %p, file_offset = 0x%z8.8x, file_size = 0x%z8.8x)", 29 module->GetFileSpec().GetDirectory().AsCString(), 30 module->GetFileSpec().GetFilename().AsCString(), 31 file, file_offset, file_size); 32 ObjectFileSP object_file_sp; 33 34 if (module != NULL) 35 { 36 if (file) 37 { 38 if (file_size == 0) 39 file_size = file->GetByteSize(); 40 41 if (file_size == 0) 42 { 43 // Check for archive file with format "/path/to/archive.a(object.o)" 44 char path_with_object[PATH_MAX*2]; 45 module->GetFileSpec().GetPath(path_with_object, sizeof(path_with_object)); 46 47 RegularExpression g_object_regex("(.*)\\(([^\\)]+)\\)$"); 48 if (g_object_regex.Execute (path_with_object, 2)) 49 { 50 FileSpec archive_file; 51 std::string path; 52 std::string object; 53 if (g_object_regex.GetMatchAtIndex (path_with_object, 1, path) && 54 g_object_regex.GetMatchAtIndex (path_with_object, 2, object)) 55 { 56 archive_file.SetFile (path.c_str(), false); 57 file_size = archive_file.GetByteSize(); 58 if (file_size > 0) 59 module->SetFileSpecAndObjectName (archive_file, ConstString(object.c_str())); 60 } 61 } 62 } 63 64 // No need to delegate further if (file_offset, file_size) exceeds the total file size. 65 // This is the base case. 66 // if (file_offset + file_size > file->GetByteSize()) 67 // return NULL; 68 69 DataBufferSP file_header_data_sp(file->ReadFileContents(file_offset, 512)); 70 uint32_t idx; 71 72 // Check if this is a normal object file by iterating through 73 // all object file plugin instances. 74 ObjectFileCreateInstance create_object_file_callback; 75 for (idx = 0; (create_object_file_callback = PluginManager::GetObjectFileCreateCallbackAtIndex(idx)) != NULL; ++idx) 76 { 77 object_file_sp.reset (create_object_file_callback(module, file_header_data_sp, file, file_offset, file_size)); 78 if (object_file_sp.get()) 79 return object_file_sp; 80 } 81 82 // Check if this is a object container by iterating through 83 // all object container plugin instances and then trying to get 84 // an object file from the container. 85 ObjectContainerCreateInstance create_object_container_callback; 86 for (idx = 0; (create_object_container_callback = PluginManager::GetObjectContainerCreateCallbackAtIndex(idx)) != NULL; ++idx) 87 { 88 std::auto_ptr<ObjectContainer> object_container_ap(create_object_container_callback(module, file_header_data_sp, file, file_offset, file_size)); 89 90 if (object_container_ap.get()) 91 object_file_sp = object_container_ap->GetObjectFile(file); 92 93 if (object_file_sp.get()) 94 return object_file_sp; 95 } 96 } 97 } 98 // We didn't find it, so clear our shared pointer in case it 99 // contains anything and return an empty shared pointer 100 object_file_sp.reset(); 101 return object_file_sp; 102 } 103 104 ObjectFile::ObjectFile (Module* module, 105 const FileSpec *file_spec_ptr, 106 addr_t offset, 107 addr_t length, 108 DataBufferSP& headerDataSP) : 109 ModuleChild (module), 110 m_file (), // This file could be different from the original module's file 111 m_type (eTypeInvalid), 112 m_strata (eStrataInvalid), 113 m_offset (offset), 114 m_length (length), 115 m_data (headerDataSP, endian::InlHostByteOrder(), 4), 116 m_unwind_table (*this) 117 { 118 if (file_spec_ptr) 119 m_file = *file_spec_ptr; 120 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 121 if (log) 122 { 123 if (m_file) 124 { 125 log->Printf ("%p ObjectFile::ObjectFile () module = %s/%s, file = %s/%s, offset = 0x%8.8llx, size = %llu\n", 126 this, 127 m_module->GetFileSpec().GetDirectory().AsCString(), 128 m_module->GetFileSpec().GetFilename().AsCString(), 129 m_file.GetDirectory().AsCString(), 130 m_file.GetFilename().AsCString(), 131 m_offset, 132 m_length); 133 } 134 else 135 { 136 log->Printf ("%p ObjectFile::ObjectFile () module = %s/%s, file = <NULL>, offset = 0x%8.8llx, size = %llu\n", 137 this, 138 m_module->GetFileSpec().GetDirectory().AsCString(), 139 m_module->GetFileSpec().GetFilename().AsCString(), 140 m_offset, 141 m_length); 142 } 143 } 144 } 145 146 ObjectFile::~ObjectFile() 147 { 148 LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); 149 if (log) 150 { 151 if (m_file) 152 { 153 log->Printf ("%p ObjectFile::~ObjectFile () module = %s/%s, file = %s/%s, offset = 0x%8.8llx, size = %llu\n", 154 this, 155 m_module->GetFileSpec().GetDirectory().AsCString(), 156 m_module->GetFileSpec().GetFilename().AsCString(), 157 m_file.GetDirectory().AsCString(), 158 m_file.GetFilename().AsCString(), 159 m_offset, 160 m_length); 161 } 162 else 163 { 164 log->Printf ("%p ObjectFile::~ObjectFile () module = %s/%s, file = <NULL>, offset = 0x%8.8llx, size = %llu\n", 165 this, 166 m_module->GetFileSpec().GetDirectory().AsCString(), 167 m_module->GetFileSpec().GetFilename().AsCString(), 168 m_offset, 169 m_length); 170 } 171 } 172 } 173 174 bool 175 ObjectFile::SetModulesArchitecture (const ArchSpec &new_arch) 176 { 177 return m_module->SetArchitecture (new_arch); 178 } 179 180 AddressClass 181 ObjectFile::GetAddressClass (addr_t file_addr) 182 { 183 Symtab *symtab = GetSymtab(); 184 if (symtab) 185 { 186 Symbol *symbol = symtab->FindSymbolContainingFileAddress(file_addr); 187 if (symbol) 188 { 189 const AddressRange *range_ptr = symbol->GetAddressRangePtr(); 190 if (range_ptr) 191 { 192 const Section *section = range_ptr->GetBaseAddress().GetSection(); 193 if (section) 194 { 195 const SectionType section_type = section->GetType(); 196 switch (section_type) 197 { 198 case eSectionTypeInvalid: return eAddressClassUnknown; 199 case eSectionTypeCode: return eAddressClassCode; 200 case eSectionTypeContainer: return eAddressClassUnknown; 201 case eSectionTypeData: return eAddressClassData; 202 case eSectionTypeDataCString: return eAddressClassData; 203 case eSectionTypeDataCStringPointers: return eAddressClassData; 204 case eSectionTypeDataSymbolAddress: return eAddressClassData; 205 case eSectionTypeData4: return eAddressClassData; 206 case eSectionTypeData8: return eAddressClassData; 207 case eSectionTypeData16: return eAddressClassData; 208 case eSectionTypeDataPointers: return eAddressClassData; 209 case eSectionTypeZeroFill: return eAddressClassData; 210 case eSectionTypeDataObjCMessageRefs: return eAddressClassData; 211 case eSectionTypeDataObjCCFStrings: return eAddressClassData; 212 case eSectionTypeDebug: return eAddressClassDebug; 213 case eSectionTypeDWARFDebugAbbrev: return eAddressClassDebug; 214 case eSectionTypeDWARFDebugAranges: return eAddressClassDebug; 215 case eSectionTypeDWARFDebugFrame: return eAddressClassDebug; 216 case eSectionTypeDWARFDebugInfo: return eAddressClassDebug; 217 case eSectionTypeDWARFDebugLine: return eAddressClassDebug; 218 case eSectionTypeDWARFDebugLoc: return eAddressClassDebug; 219 case eSectionTypeDWARFDebugMacInfo: return eAddressClassDebug; 220 case eSectionTypeDWARFDebugPubNames: return eAddressClassDebug; 221 case eSectionTypeDWARFDebugPubTypes: return eAddressClassDebug; 222 case eSectionTypeDWARFDebugRanges: return eAddressClassDebug; 223 case eSectionTypeDWARFDebugStr: return eAddressClassDebug; 224 case eSectionTypeDWARFAppleNames: return eAddressClassDebug; 225 case eSectionTypeDWARFAppleTypes: return eAddressClassDebug; 226 case eSectionTypeDWARFAppleNamespaces: return eAddressClassDebug; 227 case eSectionTypeEHFrame: return eAddressClassRuntime; 228 case eSectionTypeOther: return eAddressClassUnknown; 229 } 230 } 231 } 232 233 const SymbolType symbol_type = symbol->GetType(); 234 switch (symbol_type) 235 { 236 case eSymbolTypeAny: return eAddressClassUnknown; 237 case eSymbolTypeAbsolute: return eAddressClassUnknown; 238 case eSymbolTypeExtern: return eAddressClassUnknown; 239 case eSymbolTypeCode: return eAddressClassCode; 240 case eSymbolTypeTrampoline: return eAddressClassCode; 241 case eSymbolTypeData: return eAddressClassData; 242 case eSymbolTypeRuntime: return eAddressClassRuntime; 243 case eSymbolTypeException: return eAddressClassRuntime; 244 case eSymbolTypeSourceFile: return eAddressClassDebug; 245 case eSymbolTypeHeaderFile: return eAddressClassDebug; 246 case eSymbolTypeObjectFile: return eAddressClassDebug; 247 case eSymbolTypeCommonBlock: return eAddressClassDebug; 248 case eSymbolTypeBlock: return eAddressClassDebug; 249 case eSymbolTypeLocal: return eAddressClassData; 250 case eSymbolTypeParam: return eAddressClassData; 251 case eSymbolTypeVariable: return eAddressClassData; 252 case eSymbolTypeVariableType: return eAddressClassDebug; 253 case eSymbolTypeLineEntry: return eAddressClassDebug; 254 case eSymbolTypeLineHeader: return eAddressClassDebug; 255 case eSymbolTypeScopeBegin: return eAddressClassDebug; 256 case eSymbolTypeScopeEnd: return eAddressClassDebug; 257 case eSymbolTypeAdditional: return eAddressClassUnknown; 258 case eSymbolTypeCompiler: return eAddressClassDebug; 259 case eSymbolTypeInstrumentation:return eAddressClassDebug; 260 case eSymbolTypeUndefined: return eAddressClassUnknown; 261 } 262 } 263 } 264 return eAddressClassUnknown; 265 } 266 267 ObjectFileSP 268 ObjectFile::GetSP () 269 { 270 // This object contains an instrusive ref count base class so we can 271 // easily make a shared pointer to this object 272 return ObjectFileSP (this); 273 } 274 275 276