fa3fa4d0d4
Changed contribution data structure to 64 bit. I added the 32bit and 64bit accessors to make it explicit where we use 32bit and where we use 64bit. Also to make sure sure we catch all the cases where this data structure is used. Reviewed By: dblaikie Differential Revision: https://reviews.llvm.org/D139379
144 lines
4.9 KiB
C++
144 lines
4.9 KiB
C++
//===-- SymbolFileDWARFDwo.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 "SymbolFileDWARFDwo.h"
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#include "lldb/Core/Section.h"
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#include "lldb/Expression/DWARFExpression.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Utility/LLDBAssert.h"
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#include "llvm/Support/Casting.h"
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#include "DWARFCompileUnit.h"
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#include "DWARFDebugInfo.h"
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#include "DWARFUnit.h"
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#include <optional>
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using namespace lldb;
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using namespace lldb_private;
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char SymbolFileDWARFDwo::ID;
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SymbolFileDWARFDwo::SymbolFileDWARFDwo(SymbolFileDWARF &base_symbol_file,
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ObjectFileSP objfile, uint32_t id)
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: SymbolFileDWARF(objfile, objfile->GetSectionList(
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/*update_module_section_list*/ false)),
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m_base_symbol_file(base_symbol_file) {
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SetID(user_id_t(id) << 32);
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// Parsing of the dwarf unit index is not thread-safe, so we need to prime it
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// to enable subsequent concurrent lookups.
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m_context.GetAsLLVM().getCUIndex();
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}
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DWARFCompileUnit *SymbolFileDWARFDwo::GetDWOCompileUnitForHash(uint64_t hash) {
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if (const llvm::DWARFUnitIndex &index = m_context.GetAsLLVM().getCUIndex()) {
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if (const llvm::DWARFUnitIndex::Entry *entry = index.getFromHash(hash)) {
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if (auto *unit_contrib = entry->getContribution())
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return llvm::dyn_cast_or_null<DWARFCompileUnit>(
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DebugInfo().GetUnitAtOffset(DIERef::Section::DebugInfo,
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unit_contrib->getOffset32()));
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}
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return nullptr;
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}
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DWARFCompileUnit *cu = FindSingleCompileUnit();
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if (!cu)
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return nullptr;
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std::optional<uint64_t> dwo_id = cu->GetDWOId();
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if (!dwo_id || hash != *dwo_id)
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return nullptr;
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return cu;
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}
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DWARFCompileUnit *SymbolFileDWARFDwo::FindSingleCompileUnit() {
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DWARFDebugInfo &debug_info = DebugInfo();
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// Right now we only support dwo files with one compile unit. If we don't have
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// type units, we can just check for the unit count.
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if (!debug_info.ContainsTypeUnits() && debug_info.GetNumUnits() == 1)
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return llvm::cast<DWARFCompileUnit>(debug_info.GetUnitAtIndex(0));
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// Otherwise, we have to run through all units, and find the compile unit that
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// way.
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DWARFCompileUnit *cu = nullptr;
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for (size_t i = 0; i < debug_info.GetNumUnits(); ++i) {
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if (auto *candidate =
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llvm::dyn_cast<DWARFCompileUnit>(debug_info.GetUnitAtIndex(i))) {
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if (cu)
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return nullptr; // More that one CU found.
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cu = candidate;
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}
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}
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return cu;
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}
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lldb::offset_t SymbolFileDWARFDwo::GetVendorDWARFOpcodeSize(
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const lldb_private::DataExtractor &data, const lldb::offset_t data_offset,
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const uint8_t op) const {
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return GetBaseSymbolFile().GetVendorDWARFOpcodeSize(data, data_offset, op);
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}
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bool SymbolFileDWARFDwo::ParseVendorDWARFOpcode(
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uint8_t op, const lldb_private::DataExtractor &opcodes,
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lldb::offset_t &offset, std::vector<lldb_private::Value> &stack) const {
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return GetBaseSymbolFile().ParseVendorDWARFOpcode(op, opcodes, offset, stack);
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}
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SymbolFileDWARF::DIEToTypePtr &SymbolFileDWARFDwo::GetDIEToType() {
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return GetBaseSymbolFile().GetDIEToType();
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}
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SymbolFileDWARF::DIEToVariableSP &SymbolFileDWARFDwo::GetDIEToVariable() {
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return GetBaseSymbolFile().GetDIEToVariable();
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}
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SymbolFileDWARF::DIEToClangType &
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SymbolFileDWARFDwo::GetForwardDeclDieToClangType() {
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return GetBaseSymbolFile().GetForwardDeclDieToClangType();
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}
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SymbolFileDWARF::ClangTypeToDIE &
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SymbolFileDWARFDwo::GetForwardDeclClangTypeToDie() {
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return GetBaseSymbolFile().GetForwardDeclClangTypeToDie();
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}
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void SymbolFileDWARFDwo::GetObjCMethods(
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lldb_private::ConstString class_name,
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llvm::function_ref<bool(DWARFDIE die)> callback) {
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GetBaseSymbolFile().GetObjCMethods(class_name, callback);
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}
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UniqueDWARFASTTypeMap &SymbolFileDWARFDwo::GetUniqueDWARFASTTypeMap() {
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return GetBaseSymbolFile().GetUniqueDWARFASTTypeMap();
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}
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lldb::TypeSP
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SymbolFileDWARFDwo::FindDefinitionTypeForDWARFDeclContext(const DWARFDIE &die) {
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return GetBaseSymbolFile().FindDefinitionTypeForDWARFDeclContext(die);
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}
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lldb::TypeSP SymbolFileDWARFDwo::FindCompleteObjCDefinitionTypeForDIE(
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const DWARFDIE &die, lldb_private::ConstString type_name,
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bool must_be_implementation) {
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return GetBaseSymbolFile().FindCompleteObjCDefinitionTypeForDIE(
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die, type_name, must_be_implementation);
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}
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llvm::Expected<lldb::TypeSystemSP>
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SymbolFileDWARFDwo::GetTypeSystemForLanguage(LanguageType language) {
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return GetBaseSymbolFile().GetTypeSystemForLanguage(language);
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}
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DWARFDIE
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SymbolFileDWARFDwo::GetDIE(const DIERef &die_ref) {
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if (die_ref.dwo_num() == GetDwoNum())
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return DebugInfo().GetDIE(die_ref);
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return GetBaseSymbolFile().GetDIE(die_ref);
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}
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