diff options
Diffstat (limited to 'source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDwo.cpp')
| -rw-r--r-- | source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDwo.cpp | 135 |
1 files changed, 59 insertions, 76 deletions
diff --git a/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDwo.cpp b/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDwo.cpp index 7881448535b8..c5b54b65ea29 100644 --- a/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDwo.cpp +++ b/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDwo.cpp @@ -1,9 +1,8 @@ //===-- SymbolFileDWARFDwo.cpp ----------------------------------*- C++ -*-===// // -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. +// 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 // //===----------------------------------------------------------------------===// @@ -13,18 +12,21 @@ #include "lldb/Expression/DWARFExpression.h" #include "lldb/Symbol/ObjectFile.h" #include "lldb/Utility/LLDBAssert.h" +#include "llvm/Support/Casting.h" -#include "DWARFUnit.h" +#include "DWARFCompileUnit.h" #include "DWARFDebugInfo.h" +#include "DWARFUnit.h" using namespace lldb; using namespace lldb_private; SymbolFileDWARFDwo::SymbolFileDWARFDwo(ObjectFileSP objfile, - DWARFUnit *dwarf_cu) - : SymbolFileDWARF(objfile.get()), m_obj_file_sp(objfile), - m_base_dwarf_cu(dwarf_cu) { - SetID(((lldb::user_id_t)dwarf_cu->GetOffset()) << 32); + DWARFCompileUnit &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, @@ -34,12 +36,6 @@ void SymbolFileDWARFDwo::LoadSectionData(lldb::SectionType sect_type, if (section_list) { SectionSP section_sp(section_list->FindSectionByType(sect_type, true)); if (section_sp) { - // See if we memory mapped the DWARF segment? - if (m_dwarf_data.GetByteSize()) { - data.SetData(m_dwarf_data, section_sp->GetOffset(), - section_sp->GetFileSize()); - return; - } if (m_obj_file->ReadSectionData(section_sp.get(), data) != 0) return; @@ -52,20 +48,41 @@ void SymbolFileDWARFDwo::LoadSectionData(lldb::SectionType sect_type, } 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); +SymbolFileDWARFDwo::ParseCompileUnit(DWARFCompileUnit &dwarf_cu) { + assert(GetCompileUnit() == &dwarf_cu && + "SymbolFileDWARFDwo::ParseCompileUnit called with incompatible " + "compile unit"); + return GetBaseSymbolFile().ParseCompileUnit(m_base_dwarf_cu); +} + +DWARFCompileUnit *SymbolFileDWARFDwo::GetCompileUnit() { + if (!m_cu) + m_cu = ComputeCompileUnit(); + return m_cu; } -DWARFUnit *SymbolFileDWARFDwo::GetCompileUnit() { - // Only dwo files with 1 compile unit is supported - if (GetNumCompileUnits() == 1) - return DebugInfo()->GetCompileUnitAtIndex(0); - else +DWARFCompileUnit *SymbolFileDWARFDwo::ComputeCompileUnit() { + DWARFDebugInfo *debug_info = DebugInfo(); + if (!debug_info) return nullptr; + + // Right now we only support dwo files with one compile unit. If we don't have + // type units, we can just check for the unit count. + if (!debug_info->ContainsTypeUnits() && debug_info->GetNumUnits() == 1) + return llvm::cast<DWARFCompileUnit>(debug_info->GetUnitAtIndex(0)); + + // Otherwise, we have to run through all units, and find the compile unit that + // way. + DWARFCompileUnit *cu = nullptr; + for (size_t i = 0; i < debug_info->GetNumUnits(); ++i) { + if (auto *candidate = + llvm::dyn_cast<DWARFCompileUnit>(debug_info->GetUnitAtIndex(i))) { + if (cu) + return nullptr; // More that one CU found. + cu = candidate; + } + } + return cu; } DWARFUnit * @@ -74,83 +91,48 @@ SymbolFileDWARFDwo::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit) { } SymbolFileDWARF::DIEToTypePtr &SymbolFileDWARFDwo::GetDIEToType() { - return GetBaseSymbolFile()->GetDIEToType(); + return GetBaseSymbolFile().GetDIEToType(); } SymbolFileDWARF::DIEToVariableSP &SymbolFileDWARFDwo::GetDIEToVariable() { - return GetBaseSymbolFile()->GetDIEToVariable(); + return GetBaseSymbolFile().GetDIEToVariable(); } SymbolFileDWARF::DIEToClangType & SymbolFileDWARFDwo::GetForwardDeclDieToClangType() { - return GetBaseSymbolFile()->GetForwardDeclDieToClangType(); + return GetBaseSymbolFile().GetForwardDeclDieToClangType(); } SymbolFileDWARF::ClangTypeToDIE & SymbolFileDWARFDwo::GetForwardDeclClangTypeToDie() { - return GetBaseSymbolFile()->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); + return GetBaseSymbolFile().GetObjCMethodDIEOffsets(class_name, + method_die_offsets); } UniqueDWARFASTTypeMap &SymbolFileDWARFDwo::GetUniqueDWARFASTTypeMap() { - return GetBaseSymbolFile()->GetUniqueDWARFASTTypeMap(); + return GetBaseSymbolFile().GetUniqueDWARFASTTypeMap(); } lldb::TypeSP SymbolFileDWARFDwo::FindDefinitionTypeForDWARFDeclContext( const DWARFDeclContext &die_decl_ctx) { - return GetBaseSymbolFile()->FindDefinitionTypeForDWARFDeclContext( + return GetBaseSymbolFile().FindDefinitionTypeForDWARFDeclContext( die_decl_ctx); } lldb::TypeSP SymbolFileDWARFDwo::FindCompleteObjCDefinitionTypeForDIE( - const DWARFDIE &die, const lldb_private::ConstString &type_name, + const DWARFDIE &die, lldb_private::ConstString type_name, bool must_be_implementation) { - return GetBaseSymbolFile()->FindCompleteObjCDefinitionTypeForDIE( + return GetBaseSymbolFile().FindCompleteObjCDefinitionTypeForDIE( die, type_name, must_be_implementation); } -DWARFUnit *SymbolFileDWARFDwo::GetBaseCompileUnit() { - return m_base_dwarf_cu; -} - -const DWARFDataExtractor &SymbolFileDWARFDwo::get_debug_abbrev_data() { - return GetCachedSectionData(eSectionTypeDWARFDebugAbbrevDwo, - m_data_debug_abbrev); -} - -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; -} - -const DWARFDataExtractor &SymbolFileDWARFDwo::get_debug_info_data() { - return GetCachedSectionData(eSectionTypeDWARFDebugInfoDwo, m_data_debug_info); -} - -const DWARFDataExtractor &SymbolFileDWARFDwo::get_debug_str_data() { - return GetCachedSectionData(eSectionTypeDWARFDebugStrDwo, m_data_debug_str); -} - -const DWARFDataExtractor &SymbolFileDWARFDwo::get_debug_str_offsets_data() { - return GetCachedSectionData(eSectionTypeDWARFDebugStrOffsetsDwo, - m_data_debug_str_offsets); -} - -SymbolFileDWARF *SymbolFileDWARFDwo::GetBaseSymbolFile() { - return m_base_dwarf_cu->GetSymbolFileDWARF(); +SymbolFileDWARF &SymbolFileDWARFDwo::GetBaseSymbolFile() { + return m_base_dwarf_cu.GetSymbolFileDWARF(); } DWARFExpression::LocationListFormat @@ -160,11 +142,12 @@ SymbolFileDWARFDwo::GetLocationListFormat() const { TypeSystem * SymbolFileDWARFDwo::GetTypeSystemForLanguage(LanguageType language) { - return GetBaseSymbolFile()->GetTypeSystemForLanguage(language); + return GetBaseSymbolFile().GetTypeSystemForLanguage(language); } DWARFDIE SymbolFileDWARFDwo::GetDIE(const DIERef &die_ref) { - lldbassert(m_base_dwarf_cu->GetOffset() == die_ref.cu_offset); - return DebugInfo()->GetDIEForDIEOffset(die_ref.die_offset); + if (*die_ref.dwo_num() == GetDwoNum()) + return DebugInfo()->GetDIE(die_ref); + return GetBaseSymbolFile().GetDIE(die_ref); } |