1254721Semaste//===-- SymbolVendorELF.cpp ----------------------------------*- C++ -*-===// 2254721Semaste// 3254721Semaste// The LLVM Compiler Infrastructure 4254721Semaste// 5254721Semaste// This file is distributed under the University of Illinois Open Source 6254721Semaste// License. See LICENSE.TXT for details. 7254721Semaste// 8254721Semaste//===----------------------------------------------------------------------===// 9254721Semaste 10254721Semaste#include "SymbolVendorELF.h" 11254721Semaste 12254721Semaste#include <string.h> 13254721Semaste 14254721Semaste#include "lldb/Core/Module.h" 15254721Semaste#include "lldb/Core/ModuleSpec.h" 16254721Semaste#include "lldb/Core/PluginManager.h" 17254721Semaste#include "lldb/Core/Section.h" 18254721Semaste#include "lldb/Core/StreamString.h" 19254721Semaste#include "lldb/Core/Timer.h" 20254721Semaste#include "lldb/Host/Host.h" 21254721Semaste#include "lldb/Host/Symbols.h" 22254721Semaste#include "lldb/Symbol/ObjectFile.h" 23254721Semaste 24254721Semasteusing namespace lldb; 25254721Semasteusing namespace lldb_private; 26254721Semaste 27254721Semaste//---------------------------------------------------------------------- 28254721Semaste// SymbolVendorELF constructor 29254721Semaste//---------------------------------------------------------------------- 30254721SemasteSymbolVendorELF::SymbolVendorELF(const lldb::ModuleSP &module_sp) : 31254721Semaste SymbolVendor (module_sp) 32254721Semaste{ 33254721Semaste} 34254721Semaste 35254721Semaste//---------------------------------------------------------------------- 36254721Semaste// Destructor 37254721Semaste//---------------------------------------------------------------------- 38254721SemasteSymbolVendorELF::~SymbolVendorELF() 39254721Semaste{ 40254721Semaste} 41254721Semaste 42254721Semastevoid 43254721SemasteSymbolVendorELF::Initialize() 44254721Semaste{ 45254721Semaste PluginManager::RegisterPlugin (GetPluginNameStatic(), 46254721Semaste GetPluginDescriptionStatic(), 47254721Semaste CreateInstance); 48254721Semaste} 49254721Semaste 50254721Semastevoid 51254721SemasteSymbolVendorELF::Terminate() 52254721Semaste{ 53254721Semaste PluginManager::UnregisterPlugin (CreateInstance); 54254721Semaste} 55254721Semaste 56254721Semaste 57254721Semastelldb_private::ConstString 58254721SemasteSymbolVendorELF::GetPluginNameStatic() 59254721Semaste{ 60254721Semaste static ConstString g_name("ELF"); 61254721Semaste return g_name; 62254721Semaste} 63254721Semaste 64254721Semasteconst char * 65254721SemasteSymbolVendorELF::GetPluginDescriptionStatic() 66254721Semaste{ 67254721Semaste return "Symbol vendor for ELF that looks for dSYM files that match executables."; 68254721Semaste} 69254721Semaste 70254721Semaste 71254721Semaste 72254721Semaste//---------------------------------------------------------------------- 73254721Semaste// CreateInstance 74254721Semaste// 75254721Semaste// Platforms can register a callback to use when creating symbol 76254721Semaste// vendors to allow for complex debug information file setups, and to 77254721Semaste// also allow for finding separate debug information files. 78254721Semaste//---------------------------------------------------------------------- 79254721SemasteSymbolVendor* 80254721SemasteSymbolVendorELF::CreateInstance (const lldb::ModuleSP &module_sp, lldb_private::Stream *feedback_strm) 81254721Semaste{ 82254721Semaste if (!module_sp) 83254721Semaste return NULL; 84254721Semaste 85254721Semaste ObjectFile *obj_file = module_sp->GetObjectFile(); 86254721Semaste if (!obj_file) 87254721Semaste return NULL; 88254721Semaste 89254721Semaste static ConstString obj_file_elf("elf"); 90254721Semaste ConstString obj_name = obj_file->GetPluginName(); 91254721Semaste if (obj_name != obj_file_elf) 92254721Semaste return NULL; 93254721Semaste 94254721Semaste lldb_private::UUID uuid; 95254721Semaste if (!obj_file->GetUUID (&uuid)) 96254721Semaste return NULL; 97254721Semaste 98254721Semaste // Get the .gnu_debuglink file (if specified). 99254721Semaste FileSpecList file_spec_list = obj_file->GetDebugSymbolFilePaths(); 100254721Semaste 101254721Semaste // If the module specified a filespec, use it first. 102254721Semaste FileSpec debug_symbol_fspec (module_sp->GetSymbolFileFileSpec()); 103254721Semaste if (debug_symbol_fspec) 104254721Semaste file_spec_list.Insert (0, debug_symbol_fspec); 105254721Semaste 106254721Semaste // If we have no debug symbol files, then nothing to do. 107254721Semaste if (file_spec_list.IsEmpty()) 108254721Semaste return NULL; 109254721Semaste 110254721Semaste Timer scoped_timer (__PRETTY_FUNCTION__, 111254721Semaste "SymbolVendorELF::CreateInstance (module = %s)", 112254721Semaste module_sp->GetFileSpec().GetPath().c_str()); 113254721Semaste 114254721Semaste for (size_t idx = 0; idx < file_spec_list.GetSize(); ++idx) 115254721Semaste { 116254721Semaste ModuleSpec module_spec; 117254721Semaste const FileSpec fspec = file_spec_list.GetFileSpecAtIndex (idx); 118254721Semaste 119254721Semaste module_spec.GetFileSpec() = obj_file->GetFileSpec(); 120254721Semaste module_spec.GetFileSpec().ResolvePath(); 121254721Semaste module_spec.GetSymbolFileSpec() = fspec; 122254721Semaste module_spec.GetUUID() = uuid; 123254721Semaste FileSpec dsym_fspec = Symbols::LocateExecutableSymbolFile (module_spec); 124254721Semaste if (dsym_fspec) 125254721Semaste { 126254721Semaste DataBufferSP dsym_file_data_sp; 127254721Semaste lldb::offset_t dsym_file_data_offset = 0; 128254721Semaste ObjectFileSP dsym_objfile_sp = ObjectFile::FindPlugin(module_sp, &dsym_fspec, 0, dsym_fspec.GetByteSize(), dsym_file_data_sp, dsym_file_data_offset); 129254721Semaste if (dsym_objfile_sp) 130254721Semaste { 131254721Semaste // This objfile is for debugging purposes. Sadly, ObjectFileELF won't be able 132254721Semaste // to figure this out consistently as the symbol file may not have stripped the 133254721Semaste // code sections, etc. 134254721Semaste dsym_objfile_sp->SetType (ObjectFile::eTypeDebugInfo); 135254721Semaste 136254721Semaste SymbolVendorELF* symbol_vendor = new SymbolVendorELF(module_sp); 137254721Semaste if (symbol_vendor) 138254721Semaste { 139254721Semaste // Get the module unified section list and add our debug sections to that. 140254721Semaste SectionList *module_section_list = module_sp->GetSectionList(); 141254721Semaste SectionList *objfile_section_list = dsym_objfile_sp->GetSectionList(); 142254721Semaste 143254721Semaste static const SectionType g_sections[] = 144254721Semaste { 145254721Semaste eSectionTypeDWARFDebugAranges, 146254721Semaste eSectionTypeDWARFDebugInfo, 147254721Semaste eSectionTypeDWARFDebugAbbrev, 148254721Semaste eSectionTypeDWARFDebugFrame, 149254721Semaste eSectionTypeDWARFDebugLine, 150254721Semaste eSectionTypeDWARFDebugStr, 151254721Semaste eSectionTypeDWARFDebugLoc, 152254721Semaste eSectionTypeDWARFDebugMacInfo, 153254721Semaste eSectionTypeDWARFDebugPubNames, 154254721Semaste eSectionTypeDWARFDebugPubTypes, 155254721Semaste eSectionTypeDWARFDebugRanges, 156254721Semaste eSectionTypeELFSymbolTable, 157254721Semaste }; 158254721Semaste for (size_t idx = 0; idx < sizeof(g_sections) / sizeof(g_sections[0]); ++idx) 159254721Semaste { 160254721Semaste SectionType section_type = g_sections[idx]; 161254721Semaste SectionSP section_sp (objfile_section_list->FindSectionByType (section_type, true)); 162254721Semaste if (section_sp) 163254721Semaste { 164254721Semaste SectionSP module_section_sp (module_section_list->FindSectionByType (section_type, true)); 165254721Semaste if (module_section_sp) 166254721Semaste module_section_list->ReplaceSection (module_section_sp->GetID(), section_sp); 167254721Semaste else 168254721Semaste module_section_list->AddSection (section_sp); 169254721Semaste } 170254721Semaste } 171254721Semaste 172254721Semaste symbol_vendor->AddSymbolFileRepresentation (dsym_objfile_sp); 173254721Semaste return symbol_vendor; 174254721Semaste } 175254721Semaste } 176254721Semaste } 177254721Semaste } 178254721Semaste return NULL; 179254721Semaste} 180254721Semaste 181254721Semaste//------------------------------------------------------------------ 182254721Semaste// PluginInterface protocol 183254721Semaste//------------------------------------------------------------------ 184254721SemasteConstString 185254721SemasteSymbolVendorELF::GetPluginName() 186254721Semaste{ 187254721Semaste return GetPluginNameStatic(); 188254721Semaste} 189254721Semaste 190254721Semasteuint32_t 191254721SemasteSymbolVendorELF::GetPluginVersion() 192254721Semaste{ 193254721Semaste return 1; 194254721Semaste} 195254721Semaste 196