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//===-- 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, eSectionTypeDWARFDebugFrame,
eSectionTypeDWARFDebugInfo, eSectionTypeDWARFDebugLine,
eSectionTypeDWARFDebugLoc, eSectionTypeDWARFDebugMacInfo,
eSectionTypeDWARFDebugPubNames, eSectionTypeDWARFDebugPubTypes,
eSectionTypeDWARFDebugRanges, eSectionTypeDWARFDebugStr,
eSectionTypeDWARFDebugStrOffsets, eSectionTypeELFSymbolTable,
};
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; }
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