(this)->shared_from_this()); } return load_base_addr; } bool Section::ResolveContainedAddress(addr_t offset, Address &so_addr, bool allow_section_end) const { const size_t num_children = m_children.GetSize(); for (size_t i = 0; i < num_children; i++) { Section *child_section = m_children.GetSectionAtIndex(i).get(); addr_t child_offset = child_section->GetOffset(); if (child_offset <= offset && offset - child_offset < child_section->GetByteSize() + (allow_section_end ? 1 : 0)) return child_section->ResolveContainedAddress(offset - child_offset, so_addr, allow_section_end); } so_addr.SetOffset(offset); so_addr.SetSection(const_cast

(this)->shared_from_this()); // Ensure that there are no orphaned (i.e., moduleless) sections. assert(GetModule().get()); return true; } bool Section::ContainsFileAddress(addr_t vm_addr) const { const addr_t file_addr = GetFileAddress(); if (file_addr != LLDB_INVALID_ADDRESS && !IsThreadSpecific()) { if (file_addr <= vm_addr) { const addr_t offset = (vm_addr - file_addr) * m_target_byte_size; return offset < GetByteSize(); } } return false; } void Section::Dump(llvm::raw_ostream &s, unsigned indent, Target *target, uint32_t depth) const { s.indent(indent); s << llvm::format("0x%16.16" PRIx64 " %-22s ", GetID(), GetTypeAsCString()); bool resolved = true; addr_t addr = LLDB_INVALID_ADDRESS; if (GetByteSize() == 0) s.indent(39); else { if (target) addr = GetLoadBaseAddress(target); if (addr == LLDB_INVALID_ADDRESS) { if (target) resolved = false; addr = GetFileAddress(); } VMRange range(addr, addr + m_byte_size); range.Dump(s, 0); } s << llvm::format("%c %c%c%c 0x%8.8" PRIx64 " 0x%8.8" PRIx64 " 0x%8.8x ", resolved ? ' ' : '*', m_readable ? 'r' : '-', m_writable ? 'w' : '-', m_executable ? 'x' : '-', m_file_offset, m_file_size, Get()); DumpName(s); s << "\n"; if (depth > 0) m_children.Dump(s, indent, target, false, depth - 1); } void Section::DumpName(llvm::raw_ostream &s) const { SectionSP parent_sp(GetParent()); if (parent_sp) { parent_sp->DumpName(s); s << '.'; } else { // The top most section prints the module basename const char *name = nullptr; ModuleSP module_sp(GetModule()); if (m_obj_file) { const FileSpec &file_spec = m_obj_file->GetFileSpec(); name = file_spec.GetFilename().AsCString(); } if ((!name || !name[0]) && module_sp) name = module_sp->GetFileSpec().GetFilename().AsCString(); if (name && name[0]) s << name << '.'; } s << m_name; } bool Section::IsDescendant(const Section *section) { if (this == section) return true; SectionSP parent_sp(GetParent()); if (parent_sp) return parent_sp->IsDescendant(section); return false; } bool Section::Slide(addr_t slide_amount, bool slide_children) { if (m_file_addr != LLDB_INVALID_ADDRESS) { if (slide_amount == 0) return true; m_file_addr += slide_amount; if (slide_children) m_children.Slide(slide_amount, slide_children); return true; } return false; } /// Get the permissions as OR'ed bits from lldb::Permissions uint32_t Section::GetPermissions() const { uint32_t permissions = 0; if (m_readable) permissions |= ePermissionsReadable; if (m_writable) permissions |= ePermissionsWritable; if (m_executable) permissions |= ePermissionsExecutable; return permissions; } /// Set the permissions using bits OR'ed from lldb::Permissions void Section::SetPermissions(uint32_t permissions) { m_readable = (permissions & ePermissionsReadable) != 0; m_writable = (permissions & ePermissionsWritable) != 0; m_executable = (permissions & ePermissionsExecutable) != 0; } lldb::offset_t Section::GetSectionData(void *dst, lldb::offset_t dst_len, lldb::offset_t offset) { if (m_obj_file) return m_obj_file->ReadSectionData(this, offset, dst, dst_len); return 0; } lldb::offset_t Section::GetSectionData(DataExtractor §ion_data) { if (m_obj_file) return m_obj_file->ReadSectionData(this, section_data); return 0; } bool Section::ContainsOnlyDebugInfo() const { switch (m_type) { case eSectionTypeInvalid: case eSectionTypeCode: case eSectionTypeContainer: case eSectionTypeData: case eSectionTypeDataCString: case eSectionTypeDataCStringPointers: case eSectionTypeDataSymbolAddress: case eSectionTypeData4: case eSectionTypeData8: case eSectionTypeData16: case eSectionTypeDataPointers: case eSectionTypeZeroFill: case eSectionTypeDataObjCMessageRefs: case eSectionTypeDataObjCCFStrings: case eSectionTypeELFSymbolTable: case eSectionTypeELFDynamicSymbols: case eSectionTypeELFRelocationEntries: case eSectionTypeELFDynamicLinkInfo: case eSectionTypeEHFrame: case eSectionTypeARMexidx: case eSectionTypeARMextab: case eSectionTypeCompactUnwind: case eSectionTypeGoSymtab: case eSectionTypeAbsoluteAddress: case eSectionTypeOther: // Used for "__dof_cache" in mach-o or ".debug" for COFF which isn't debug // information that we parse at all. This was causing system files with no // debug info to show debug info byte sizes in the "statistics dump" output // for each module. New "eSectionType" enums should be created for dedicated // debug info that has a predefined format if we wish for these sections to // show up as debug info. case eSectionTypeDebug: return false; case eSectionTypeDWARFDebugAbbrev: case eSectionTypeDWARFDebugAbbrevDwo: case eSectionTypeDWARFDebugAddr: case eSectionTypeDWARFDebugAranges: case eSectionTypeDWARFDebugCuIndex: case eSectionTypeDWARFDebugTuIndex: case eSectionTypeDWARFDebugFrame: case eSectionTypeDWARFDebugInfo: case eSectionTypeDWARFDebugInfoDwo: case eSectionTypeDWARFDebugLine: case eSectionTypeDWARFDebugLineStr: case eSectionTypeDWARFDebugLoc: case eSectionTypeDWARFDebugLocDwo: case eSectionTypeDWARFDebugLocLists: case eSectionTypeDWARFDebugLocListsDwo: case eSectionTypeDWARFDebugMacInfo: case eSectionTypeDWARFDebugMacro: case eSectionTypeDWARFDebugPubNames: case eSectionTypeDWARFDebugPubTypes: case eSectionTypeDWARFDebugRanges: case eSectionTypeDWARFDebugRngLists: case eSectionTypeDWARFDebugRngListsDwo: case eSectionTypeDWARFDebugStr: case eSectionTypeDWARFDebugStrDwo: case eSectionTypeDWARFDebugStrOffsets: case eSectionTypeDWARFDebugStrOffsetsDwo: case eSectionTypeDWARFDebugTypes: case eSectionTypeDWARFDebugTypesDwo: case eSectionTypeDWARFDebugNames: case eSectionTypeDWARFAppleNames: case eSectionTypeDWARFAppleTypes: case eSectionTypeDWARFAppleNamespaces: case eSectionTypeDWARFAppleObjC: case eSectionTypeDWARFGNUDebugAltLink: case eSectionTypeCTF: case eSectionTypeSwiftModules: return true; } return false; } #pragma mark SectionList SectionList &SectionList::operator=(const SectionList &rhs) { if (this != &rhs) m_sections = rhs.m_sections; return *this; } size_t SectionList::AddSection(const lldb::SectionSP §ion_sp) { if (section_sp) { size_t section_index = m_sections.size(); m_sections.push_back(section_sp); return section_index; } return std::numeric_limits::max(); } // Warning, this can be slow as it's removing items from a std::vector. bool SectionList::DeleteSection(size_t idx) { if (idx < m_sections.size()) { m_sections.erase(m_sections.begin() + idx); return true; } return false; } size_t SectionList::FindSectionIndex(const Section *sect) { iterator sect_iter; iterator begin = m_sections.begin(); iterator end = m_sections.end(); for (sect_iter = begin; sect_iter != end; ++sect_iter) { if (sect_iter->get() == sect) { // The secton was already in this section list return std::distance(begin, sect_iter); } } return UINT32_MAX; } size_t SectionList::AddUniqueSection(const lldb::SectionSP §_sp) { size_t sect_idx = FindSectionIndex(sect_sp.get()); if (sect_idx == UINT32_MAX) { sect_idx = AddSection(sect_sp); } return sect_idx; } bool SectionList::ReplaceSection(user_id_t sect_id, const lldb::SectionSP §_sp, uint32_t depth) { iterator sect_iter, end = m_sections.end(); for (sect_iter = m_sections.begin(); sect_iter != end; ++sect_iter) { if ((*sect_iter)->GetID() == sect_id) { *sect_iter = sect_sp; return true; } else if (depth > 0) { if ((*sect_iter) ->GetChildren() .ReplaceSection(sect_id, sect_sp, depth - 1)) return true; } } return false; } size_t SectionList::GetNumSections(uint32_t depth) const { size_t count = m_sections.size(); if (depth > 0) { const_iterator sect_iter, end = m_sections.end(); for (sect_iter = m_sections.begin(); sect_iter != end; ++sect_iter) { count += (*sect_iter)->GetChildren().GetNumSections(depth - 1); } } return count; } SectionSP SectionList::GetSectionAtIndex(size_t idx) const { SectionSP sect_sp; if (idx < m_sections.size()) sect_sp = m_sections[idx]; return sect_sp; } SectionSP SectionList::FindSectionByName(ConstString section_dstr) const { SectionSP sect_sp; // Check if we have a valid section string if (section_dstr && !m_sections.empty()) { const_iterator sect_iter; const_iterator end = m_sections.end(); for (sect_iter = m_sections.begin(); sect_iter != end && sect_sp.get() == nullptr; ++sect_iter) { Section *child_section = sect_iter->get(); if (child_section) { if (child_section->GetName() == section_dstr) { sect_sp = *sect_iter; } else { sect_sp = child_section->GetChildren().FindSectionByName(section_dstr); } } } } return sect_sp; } SectionSP SectionList::FindSectionByID(user_id_t sect_id) const { SectionSP sect_sp; if (sect_id) { const_iterator sect_iter; const_iterator end = m_sections.end(); for (sect_iter = m_sections.begin(); sect_iter != end && sect_sp.get() == nullptr; ++sect_iter) { if ((*sect_iter)->GetID() == sect_id) { sect_sp = *sect_iter; break; } else { sect_sp = (*sect_iter)->GetChildren().FindSectionByID(sect_id); } } } return sect_sp; } SectionSP SectionList::FindSectionByType(SectionType sect_type, bool check_children, size_t start_idx) const { SectionSP sect_sp; size_t num_sections = m_sections.size(); for (size_t idx = start_idx; idx < num_sections; ++idx) { if (m_sections[idx]->GetType() == sect_type) { sect_sp = m_sections[idx]; break; } else if (check_children) { sect_sp = m_sections[idx]->GetChildren().FindSectionByType( sect_type, check_children, 0); if (sect_sp) break; } } return sect_sp; } SectionSP SectionList::FindSectionContainingFileAddress(addr_t vm_addr, uint32_t depth) const { SectionSP sect_sp; const_iterator sect_iter; const_iterator end = m_sections.end(); for (sect_iter = m_sections.begin(); sect_iter != end && sect_sp.get() == nullptr; ++sect_iter) { Section *sect = sect_iter->get(); if (sect->ContainsFileAddress(vm_addr)) { // The file address is in this section. We need to make sure one of our // child sections doesn't contain this address as well as obeying the // depth limit that was passed in. if (depth > 0) sect_sp = sect->GetChildren().FindSectionContainingFileAddress( vm_addr, depth - 1); if (sect_sp.get() == nullptr && !sect->IsFake()) sect_sp = *sect_iter; } } return sect_sp; } bool SectionList::ContainsSection(user_id_t sect_id) const { return FindSectionByID(sect_id).get() != nullptr; } void SectionList::Dump(llvm::raw_ostream &s, unsigned indent, Target *target, bool show_header, uint32_t depth) const { bool target_has_loaded_sections = target && !target->GetSectionLoadList().IsEmpty(); if (show_header && !m_sections.empty()) { s.indent(indent); s << llvm::formatv( "SectID Type {0} Address " " Perm File Off. File Size Flags Section Name\n", target_has_loaded_sections ? "Load" : "File"); s.indent(indent); s << "------------------ ---------------------- " "--------------------------------------- ---- ---------- ---------- " "---------- ----------------------------\n"; } for (const auto §ion_sp : m_sections) section_sp->Dump(s, indent, target_has_loaded_sections ? target : nullptr, depth); } size_t SectionList::Slide(addr_t slide_amount, bool slide_children) { size_t count = 0; const_iterator pos, end = m_sections.end(); for (pos = m_sections.begin(); pos != end; ++pos) { if ((*pos)->Slide(slide_amount, slide_children)) ++count; } return count; } uint64_t SectionList::GetDebugInfoSize() const { uint64_t debug_info_size = 0; for (const auto §ion : m_sections) { const SectionList &sub_sections = section->GetChildren(); if (sub_sections.GetSize() > 0) debug_info_size += sub_sections.GetDebugInfoSize(); else if (section->ContainsOnlyDebugInfo()) debug_info_size += section->GetFileSize(); } return debug_info_size; } namespace llvm { namespace json { bool fromJSON(const llvm::json::Value &value, lldb_private::JSONSection §ion, llvm::json::Path path) { llvm::json::ObjectMapper o(value, path); return o && o.map("name", section.name) && o.map("type", section.type) && o.map("size", section.address) && o.map("size", section.size); } bool fromJSON(const llvm::json::Value &value, lldb::SectionType &type, llvm::json::Path path) { if (auto str = value.getAsString()) { type = llvm::StringSwitch(*str) .Case("code", eSectionTypeCode) .Case("container", eSectionTypeContainer) .Case("data", eSectionTypeData) .Case("debug", eSectionTypeDebug) .Default(eSectionTypeInvalid); if (type == eSectionTypeInvalid) { path.report("invalid section type"); return false; } return true; } path.report("expected string"); return false; } } // namespace json } // namespace llvm