72 lines · cpp
1//===-- SymbolVendor.cpp --------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "lldb/Symbol/SymbolVendor.h"10 11#include "lldb/Core/Module.h"12#include "lldb/Core/PluginManager.h"13#include "lldb/Symbol/CompileUnit.h"14#include "lldb/Symbol/ObjectFile.h"15#include "lldb/Symbol/SymbolFile.h"16#include "lldb/Utility/Stream.h"17 18using namespace lldb;19using namespace lldb_private;20 21// FindPlugin22//23// Platforms can register a callback to use when creating symbol vendors to24// allow for complex debug information file setups, and to also allow for25// finding separate debug information files.26SymbolVendor *SymbolVendor::FindPlugin(const lldb::ModuleSP &module_sp,27 lldb_private::Stream *feedback_strm) {28 std::unique_ptr<SymbolVendor> instance_up;29 SymbolVendorCreateInstance create_callback;30 31 for (size_t idx = 0;32 (create_callback = PluginManager::GetSymbolVendorCreateCallbackAtIndex(33 idx)) != nullptr;34 ++idx) {35 instance_up.reset(create_callback(module_sp, feedback_strm));36 37 if (instance_up) {38 return instance_up.release();39 }40 }41 // The default implementation just tries to create debug information using42 // the file representation for the module.43 ObjectFileSP sym_objfile_sp;44 FileSpec sym_spec = module_sp->GetSymbolFileFileSpec();45 if (sym_spec && sym_spec != module_sp->GetObjectFile()->GetFileSpec()) {46 DataBufferSP data_sp;47 offset_t data_offset = 0;48 sym_objfile_sp = ObjectFile::FindPlugin(49 module_sp, &sym_spec, 0, FileSystem::Instance().GetByteSize(sym_spec),50 data_sp, data_offset);51 }52 if (!sym_objfile_sp)53 sym_objfile_sp = module_sp->GetObjectFile()->shared_from_this();54 instance_up = std::make_unique<SymbolVendor>(module_sp);55 instance_up->AddSymbolFileRepresentation(sym_objfile_sp);56 return instance_up.release();57}58 59// SymbolVendor constructor60SymbolVendor::SymbolVendor(const lldb::ModuleSP &module_sp)61 : ModuleChild(module_sp), m_sym_file_up() {}62 63// Add a representation given an object file.64void SymbolVendor::AddSymbolFileRepresentation(const ObjectFileSP &objfile_sp) {65 ModuleSP module_sp(GetModule());66 if (module_sp) {67 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());68 if (objfile_sp)69 m_sym_file_up.reset(SymbolFile::FindPlugin(objfile_sp));70 }71}72