| //===-- SymbolVendorELF.cpp ----------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "SymbolVendorELF.h" |
| |
| #include <string.h> |
| |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/ModuleSpec.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Core/Section.h" |
| #include "lldb/Host/Host.h" |
| #include "lldb/Host/Symbols.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Utility/StreamString.h" |
| #include "lldb/Utility/Timer.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| //---------------------------------------------------------------------- |
| // SymbolVendorELF constructor |
| //---------------------------------------------------------------------- |
| SymbolVendorELF::SymbolVendorELF(const lldb::ModuleSP &module_sp) |
| : SymbolVendor(module_sp) {} |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| SymbolVendorELF::~SymbolVendorELF() {} |
| |
| void SymbolVendorELF::Initialize() { |
| PluginManager::RegisterPlugin(GetPluginNameStatic(), |
| GetPluginDescriptionStatic(), CreateInstance); |
| } |
| |
| void SymbolVendorELF::Terminate() { |
| PluginManager::UnregisterPlugin(CreateInstance); |
| } |
| |
| lldb_private::ConstString SymbolVendorELF::GetPluginNameStatic() { |
| static ConstString g_name("ELF"); |
| return g_name; |
| } |
| |
| const char *SymbolVendorELF::GetPluginDescriptionStatic() { |
| return "Symbol vendor for ELF that looks for dSYM files that match " |
| "executables."; |
| } |
| |
| //---------------------------------------------------------------------- |
| // CreateInstance |
| // |
| // Platforms can register a callback to use when creating symbol vendors to |
| // allow for complex debug information file setups, and to also allow for |
| // finding separate debug information files. |
| //---------------------------------------------------------------------- |
| SymbolVendor * |
| SymbolVendorELF::CreateInstance(const lldb::ModuleSP &module_sp, |
| lldb_private::Stream *feedback_strm) { |
| if (!module_sp) |
| return NULL; |
| |
| ObjectFile *obj_file = module_sp->GetObjectFile(); |
| if (!obj_file) |
| return NULL; |
| |
| static ConstString obj_file_elf("elf"); |
| ConstString obj_name = obj_file->GetPluginName(); |
| if (obj_name != obj_file_elf) |
| return NULL; |
| |
| lldb_private::UUID uuid; |
| if (!obj_file->GetUUID(&uuid)) |
| return NULL; |
| |
| // Get the .gnu_debuglink file (if specified). |
| FileSpecList file_spec_list = obj_file->GetDebugSymbolFilePaths(); |
| |
| // If the module specified a filespec, use it first. |
| FileSpec debug_symbol_fspec(module_sp->GetSymbolFileFileSpec()); |
| if (debug_symbol_fspec) |
| file_spec_list.Insert(0, debug_symbol_fspec); |
| |
| // If we have no debug symbol files, then nothing to do. |
| if (file_spec_list.IsEmpty()) |
| return NULL; |
| |
| static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); |
| Timer scoped_timer(func_cat, "SymbolVendorELF::CreateInstance (module = %s)", |
| module_sp->GetFileSpec().GetPath().c_str()); |
| |
| for (size_t idx = 0; idx < file_spec_list.GetSize(); ++idx) { |
| ModuleSpec module_spec; |
| const FileSpec fspec = file_spec_list.GetFileSpecAtIndex(idx); |
| |
| module_spec.GetFileSpec() = obj_file->GetFileSpec(); |
| module_spec.GetFileSpec().ResolvePath(); |
| module_spec.GetSymbolFileSpec() = fspec; |
| module_spec.GetUUID() = uuid; |
| FileSpec dsym_fspec = Symbols::LocateExecutableSymbolFile(module_spec); |
| if (dsym_fspec) { |
| DataBufferSP dsym_file_data_sp; |
| lldb::offset_t dsym_file_data_offset = 0; |
| ObjectFileSP dsym_objfile_sp = ObjectFile::FindPlugin( |
| module_sp, &dsym_fspec, 0, dsym_fspec.GetByteSize(), |
| dsym_file_data_sp, dsym_file_data_offset); |
| if (dsym_objfile_sp) { |
| // This objfile is for debugging purposes. Sadly, ObjectFileELF won't |
| // be able to figure this out consistently as the symbol file may not |
| // have stripped the code sections, etc. |
| dsym_objfile_sp->SetType(ObjectFile::eTypeDebugInfo); |
| |
| SymbolVendorELF *symbol_vendor = new SymbolVendorELF(module_sp); |
| if (symbol_vendor) { |
| // Get the module unified section list and add our debug sections to |
| // that. |
| SectionList *module_section_list = module_sp->GetSectionList(); |
| SectionList *objfile_section_list = dsym_objfile_sp->GetSectionList(); |
| |
| static const SectionType g_sections[] = { |
| eSectionTypeDWARFDebugAbbrev, eSectionTypeDWARFDebugAddr, |
| eSectionTypeDWARFDebugAranges, eSectionTypeDWARFDebugCuIndex, |
| eSectionTypeDWARFDebugFrame, eSectionTypeDWARFDebugInfo, |
| eSectionTypeDWARFDebugLine, eSectionTypeDWARFDebugLoc, |
| eSectionTypeDWARFDebugMacInfo, eSectionTypeDWARFDebugPubNames, |
| eSectionTypeDWARFDebugPubTypes, eSectionTypeDWARFDebugRanges, |
| eSectionTypeDWARFDebugStr, eSectionTypeDWARFDebugStrOffsets, |
| eSectionTypeELFSymbolTable, eSectionTypeDWARFGNUDebugAltLink, |
| }; |
| for (size_t idx = 0; idx < sizeof(g_sections) / sizeof(g_sections[0]); |
| ++idx) { |
| SectionType section_type = g_sections[idx]; |
| SectionSP section_sp( |
| objfile_section_list->FindSectionByType(section_type, true)); |
| if (section_sp) { |
| SectionSP module_section_sp( |
| module_section_list->FindSectionByType(section_type, true)); |
| if (module_section_sp) |
| module_section_list->ReplaceSection(module_section_sp->GetID(), |
| section_sp); |
| else |
| module_section_list->AddSection(section_sp); |
| } |
| } |
| |
| symbol_vendor->AddSymbolFileRepresentation(dsym_objfile_sp); |
| return symbol_vendor; |
| } |
| } |
| } |
| } |
| return NULL; |
| } |
| |
| //------------------------------------------------------------------ |
| // PluginInterface protocol |
| //------------------------------------------------------------------ |
| ConstString SymbolVendorELF::GetPluginName() { return GetPluginNameStatic(); } |
| |
| uint32_t SymbolVendorELF::GetPluginVersion() { return 1; } |