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//===-- SymbolFileDWARFDwo.cpp ----------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "SymbolFileDWARFDwo.h"
#include "lldb/Core/Section.h"
#include "lldb/Expression/DWARFExpression.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Utility/LLDBAssert.h"
#include "DWARFUnit.h"
#include "DWARFDebugInfo.h"
using namespace lldb;
using namespace lldb_private;
SymbolFileDWARFDwo::SymbolFileDWARFDwo(ObjectFileSP objfile,
DWARFUnit *dwarf_cu)
: SymbolFileDWARF(objfile.get(), objfile->GetSectionList(
/*update_module_section_list*/ false)),
m_obj_file_sp(objfile), m_base_dwarf_cu(dwarf_cu) {
SetID(((lldb::user_id_t)dwarf_cu->GetID()) << 32);
}
void SymbolFileDWARFDwo::LoadSectionData(lldb::SectionType sect_type,
DWARFDataExtractor &data) {
const SectionList *section_list =
m_obj_file->GetSectionList(false /* update_module_section_list */);
if (section_list) {
SectionSP section_sp(section_list->FindSectionByType(sect_type, true));
if (section_sp) {
if (m_obj_file->ReadSectionData(section_sp.get(), data) != 0)
return;
data.Clear();
}
}
SymbolFileDWARF::LoadSectionData(sect_type, data);
}
lldb::CompUnitSP
SymbolFileDWARFDwo::ParseCompileUnit(DWARFUnit *dwarf_cu,
uint32_t cu_idx) {
assert(GetCompileUnit() == dwarf_cu && "SymbolFileDWARFDwo::ParseCompileUnit "
"called with incompatible compile "
"unit");
return GetBaseSymbolFile()->ParseCompileUnit(m_base_dwarf_cu, UINT32_MAX);
}
DWARFUnit *SymbolFileDWARFDwo::GetCompileUnit() {
// Only dwo files with 1 compile unit is supported
if (GetNumCompileUnits() == 1)
return DebugInfo()->GetUnitAtIndex(0);
else
return nullptr;
}
DWARFUnit *
SymbolFileDWARFDwo::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit) {
return GetCompileUnit();
}
SymbolFileDWARF::DIEToTypePtr &SymbolFileDWARFDwo::GetDIEToType() {
return GetBaseSymbolFile()->GetDIEToType();
}
SymbolFileDWARF::DIEToVariableSP &SymbolFileDWARFDwo::GetDIEToVariable() {
return GetBaseSymbolFile()->GetDIEToVariable();
}
SymbolFileDWARF::DIEToClangType &
SymbolFileDWARFDwo::GetForwardDeclDieToClangType() {
return GetBaseSymbolFile()->GetForwardDeclDieToClangType();
}
SymbolFileDWARF::ClangTypeToDIE &
SymbolFileDWARFDwo::GetForwardDeclClangTypeToDie() {
return GetBaseSymbolFile()->GetForwardDeclClangTypeToDie();
}
size_t SymbolFileDWARFDwo::GetObjCMethodDIEOffsets(
lldb_private::ConstString class_name, DIEArray &method_die_offsets) {
return GetBaseSymbolFile()->GetObjCMethodDIEOffsets(
class_name, method_die_offsets);
}
UniqueDWARFASTTypeMap &SymbolFileDWARFDwo::GetUniqueDWARFASTTypeMap() {
return GetBaseSymbolFile()->GetUniqueDWARFASTTypeMap();
}
lldb::TypeSP SymbolFileDWARFDwo::FindDefinitionTypeForDWARFDeclContext(
const DWARFDeclContext &die_decl_ctx) {
return GetBaseSymbolFile()->FindDefinitionTypeForDWARFDeclContext(
die_decl_ctx);
}
lldb::TypeSP SymbolFileDWARFDwo::FindCompleteObjCDefinitionTypeForDIE(
const DWARFDIE &die, lldb_private::ConstString type_name,
bool must_be_implementation) {
return GetBaseSymbolFile()->FindCompleteObjCDefinitionTypeForDIE(
die, type_name, must_be_implementation);
}
DWARFUnit *SymbolFileDWARFDwo::GetBaseCompileUnit() {
return m_base_dwarf_cu;
}
const DWARFDataExtractor &SymbolFileDWARFDwo::get_debug_addr_data() {
// For single file split dwarf case (when we have .dwo sections in a .o),
// we do not want to use the .debug_addr section from .o file,
// but want to get one from the final executable.
// For regular split debug case, .dwo file does not contain the
// .debug_addr, so we would always fall back to such lookup anyways.
llvm::call_once(m_data_debug_addr.m_flag, [this] {
SymbolFileDWARF::LoadSectionData(eSectionTypeDWARFDebugAddr,
std::ref(m_data_debug_addr.m_data));
});
return m_data_debug_addr.m_data;
}
SymbolFileDWARF *SymbolFileDWARFDwo::GetBaseSymbolFile() {
return m_base_dwarf_cu->GetSymbolFileDWARF();
}
DWARFExpression::LocationListFormat
SymbolFileDWARFDwo::GetLocationListFormat() const {
return DWARFExpression::SplitDwarfLocationList;
}
TypeSystem *
SymbolFileDWARFDwo::GetTypeSystemForLanguage(LanguageType language) {
return GetBaseSymbolFile()->GetTypeSystemForLanguage(language);
}
DWARFDIE
SymbolFileDWARFDwo::GetDIE(const DIERef &die_ref) {
lldbassert(die_ref.cu_offset == m_base_dwarf_cu->GetOffset() ||
die_ref.cu_offset == DW_INVALID_OFFSET);
return DebugInfo()->GetDIEForDIEOffset(die_ref.section, die_ref.die_offset);
}
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