745e8bfd1a
This completes the conversion of LocateSymbolFile into a SymbolLocator plugin. The only remaining function is DownloadSymbolFileAsync which doesn't really fit into the plugin model, and therefore moves into the SymbolLocator class, while still relying on the plugins to do the underlying work.
136 lines
4.8 KiB
C++
136 lines
4.8 KiB
C++
//===-- SymbolVendorPECOFF.cpp --------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "SymbolVendorPECOFF.h"
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#include <cstring>
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#include "Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/ModuleSpec.h"
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#include "lldb/Core/PluginManager.h"
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#include "lldb/Core/Section.h"
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#include "lldb/Host/Host.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Utility/StreamString.h"
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#include "lldb/Utility/Timer.h"
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using namespace lldb;
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using namespace lldb_private;
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LLDB_PLUGIN_DEFINE(SymbolVendorPECOFF)
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// SymbolVendorPECOFF constructor
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SymbolVendorPECOFF::SymbolVendorPECOFF(const lldb::ModuleSP &module_sp)
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: SymbolVendor(module_sp) {}
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void SymbolVendorPECOFF::Initialize() {
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PluginManager::RegisterPlugin(GetPluginNameStatic(),
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GetPluginDescriptionStatic(), CreateInstance);
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}
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void SymbolVendorPECOFF::Terminate() {
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PluginManager::UnregisterPlugin(CreateInstance);
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}
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llvm::StringRef SymbolVendorPECOFF::GetPluginDescriptionStatic() {
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return "Symbol vendor for PE/COFF that looks for dSYM files that match "
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"executables.";
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}
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// CreateInstance
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//
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// Platforms can register a callback to use when creating symbol vendors to
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// allow for complex debug information file setups, and to also allow for
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// finding separate debug information files.
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SymbolVendor *
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SymbolVendorPECOFF::CreateInstance(const lldb::ModuleSP &module_sp,
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lldb_private::Stream *feedback_strm) {
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if (!module_sp)
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return nullptr;
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ObjectFilePECOFF *obj_file =
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llvm::dyn_cast_or_null<ObjectFilePECOFF>(module_sp->GetObjectFile());
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if (!obj_file)
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return nullptr;
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lldb_private::UUID uuid = obj_file->GetUUID();
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if (!uuid)
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return nullptr;
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// If the main object file already contains debug info, then we are done.
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if (obj_file->GetSectionList()->FindSectionByType(
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lldb::eSectionTypeDWARFDebugInfo, true))
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return nullptr;
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// If the module specified a filespec, use that.
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FileSpec fspec = module_sp->GetSymbolFileFileSpec();
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// Otherwise, try gnu_debuglink, if one exists.
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if (!fspec)
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fspec = obj_file->GetDebugLink().value_or(FileSpec());
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LLDB_SCOPED_TIMERF("SymbolVendorPECOFF::CreateInstance (module = %s)",
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module_sp->GetFileSpec().GetPath().c_str());
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ModuleSpec module_spec;
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module_spec.GetFileSpec() = obj_file->GetFileSpec();
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FileSystem::Instance().Resolve(module_spec.GetFileSpec());
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module_spec.GetSymbolFileSpec() = fspec;
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module_spec.GetUUID() = uuid;
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FileSpecList search_paths = Target::GetDefaultDebugFileSearchPaths();
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FileSpec dsym_fspec =
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PluginManager::LocateExecutableSymbolFile(module_spec, search_paths);
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if (!dsym_fspec)
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return nullptr;
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DataBufferSP dsym_file_data_sp;
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lldb::offset_t dsym_file_data_offset = 0;
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ObjectFileSP dsym_objfile_sp = ObjectFile::FindPlugin(
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module_sp, &dsym_fspec, 0, FileSystem::Instance().GetByteSize(dsym_fspec),
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dsym_file_data_sp, dsym_file_data_offset);
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if (!dsym_objfile_sp)
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return nullptr;
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// This objfile is for debugging purposes.
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dsym_objfile_sp->SetType(ObjectFile::eTypeDebugInfo);
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// Get the module unified section list and add our debug sections to
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// that.
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SectionList *module_section_list = module_sp->GetSectionList();
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SectionList *objfile_section_list = dsym_objfile_sp->GetSectionList();
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if (!objfile_section_list || !module_section_list)
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return nullptr;
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static const SectionType g_sections[] = {
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eSectionTypeDWARFDebugAbbrev, eSectionTypeDWARFDebugAranges,
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eSectionTypeDWARFDebugFrame, eSectionTypeDWARFDebugInfo,
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eSectionTypeDWARFDebugLine, eSectionTypeDWARFDebugLoc,
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eSectionTypeDWARFDebugLocLists, eSectionTypeDWARFDebugMacInfo,
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eSectionTypeDWARFDebugNames, eSectionTypeDWARFDebugPubNames,
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eSectionTypeDWARFDebugPubTypes, eSectionTypeDWARFDebugRanges,
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eSectionTypeDWARFDebugStr, eSectionTypeDWARFDebugTypes,
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};
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for (SectionType section_type : g_sections) {
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if (SectionSP section_sp =
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objfile_section_list->FindSectionByType(section_type, true)) {
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if (SectionSP module_section_sp =
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module_section_list->FindSectionByType(section_type, true))
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module_section_list->ReplaceSection(module_section_sp->GetID(),
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section_sp);
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else
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module_section_list->AddSection(section_sp);
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}
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}
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SymbolVendorPECOFF *symbol_vendor = new SymbolVendorPECOFF(module_sp);
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symbol_vendor->AddSymbolFileRepresentation(dsym_objfile_sp);
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return symbol_vendor;
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}
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