133 lines · cpp
1//===-- DWARFBaseDIE.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 "DWARFBaseDIE.h"10 11#include "DWARFUnit.h"12#include "DWARFDebugInfoEntry.h"13#include "SymbolFileDWARF.h"14 15#include "lldb/Core/Module.h"16#include "lldb/Symbol/ObjectFile.h"17#include "lldb/Utility/Log.h"18#include <optional>19 20using namespace lldb_private;21using namespace lldb_private::plugin::dwarf;22 23std::optional<DIERef> DWARFBaseDIE::GetDIERef() const {24 if (!IsValid())25 return std::nullopt;26 27 return DIERef(m_cu->GetSymbolFileDWARF().GetFileIndex(),28 m_cu->GetDebugSection(), m_die->GetOffset());29}30 31dw_tag_t DWARFBaseDIE::Tag() const {32 if (m_die)33 return m_die->Tag();34 else35 return llvm::dwarf::DW_TAG_null;36}37 38const char *DWARFBaseDIE::GetAttributeValueAsString(const dw_attr_t attr,39 const char *fail_value) const {40 if (IsValid())41 return m_die->GetAttributeValueAsString(GetCU(), attr, fail_value);42 else43 return fail_value;44}45 46uint64_t DWARFBaseDIE::GetAttributeValueAsUnsigned(const dw_attr_t attr,47 uint64_t fail_value) const {48 if (IsValid())49 return m_die->GetAttributeValueAsUnsigned(GetCU(), attr, fail_value);50 else51 return fail_value;52}53 54std::optional<uint64_t>55DWARFBaseDIE::GetAttributeValueAsOptionalUnsigned(const dw_attr_t attr) const {56 if (IsValid())57 return m_die->GetAttributeValueAsOptionalUnsigned(GetCU(), attr);58 return std::nullopt;59}60 61uint64_t DWARFBaseDIE::GetAttributeValueAsAddress(const dw_attr_t attr,62 uint64_t fail_value) const {63 if (IsValid())64 return m_die->GetAttributeValueAsAddress(GetCU(), attr, fail_value);65 else66 return fail_value;67}68 69lldb::user_id_t DWARFBaseDIE::GetID() const {70 const std::optional<DIERef> &ref = this->GetDIERef();71 if (ref)72 return ref->get_id();73 74 return LLDB_INVALID_UID;75}76 77const char *DWARFBaseDIE::GetName() const {78 if (IsValid())79 return m_die->GetName(m_cu);80 else81 return nullptr;82}83 84lldb::ModuleSP DWARFBaseDIE::GetModule() const {85 SymbolFileDWARF *dwarf = GetDWARF();86 if (dwarf)87 return dwarf->GetObjectFile()->GetModule();88 else89 return lldb::ModuleSP();90}91 92dw_offset_t DWARFBaseDIE::GetOffset() const {93 if (IsValid())94 return m_die->GetOffset();95 else96 return DW_INVALID_OFFSET;97}98 99SymbolFileDWARF *DWARFBaseDIE::GetDWARF() const {100 if (m_cu)101 return &m_cu->GetSymbolFileDWARF();102 else103 return nullptr;104}105 106bool DWARFBaseDIE::HasChildren() const {107 return m_die && m_die->HasChildren();108}109 110DWARFAttributes DWARFBaseDIE::GetAttributes(Recurse recurse) const {111 if (IsValid())112 return m_die->GetAttributes(m_cu, recurse);113 return DWARFAttributes();114}115 116namespace lldb_private::plugin {117namespace dwarf {118bool operator==(const DWARFBaseDIE &lhs, const DWARFBaseDIE &rhs) {119 return lhs.GetDIE() == rhs.GetDIE() && lhs.GetCU() == rhs.GetCU();120}121 122bool operator!=(const DWARFBaseDIE &lhs, const DWARFBaseDIE &rhs) {123 return !(lhs == rhs);124}125} // namespace dwarf126} // namespace lldb_private::plugin127 128const DWARFDataExtractor &DWARFBaseDIE::GetData() const {129 // Clients must check if this DIE is valid before calling this function.130 assert(IsValid());131 return m_cu->GetData();132}133