diff options
Diffstat (limited to 'source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp')
| -rw-r--r-- | source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp | 1058 |
1 files changed, 9 insertions, 1049 deletions
diff --git a/source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp b/source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp index 5d7b12067263..8541f1cfe1f6 100644 --- a/source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp +++ b/source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp @@ -9,48 +9,22 @@ #include "DWARFCompileUnit.h" -#include "Plugins/Language/ObjC/ObjCLanguage.h" -#include "lldb/Core/DumpDataExtractor.h" -#include "lldb/Core/Mangled.h" -#include "lldb/Core/Module.h" -#include "lldb/Host/StringConvert.h" -#include "lldb/Symbol/CompileUnit.h" -#include "lldb/Symbol/LineTable.h" -#include "lldb/Symbol/ObjectFile.h" -#include "lldb/Utility/Stream.h" -#include "lldb/Utility/StreamString.h" -#include "lldb/Utility/Timer.h" - -#include "DWARFDIECollection.h" -#include "DWARFDebugAbbrev.h" -#include "DWARFDebugAranges.h" -#include "DWARFDebugInfo.h" -#include "DWARFFormValue.h" -#include "LogChannelDWARF.h" -#include "NameToDIE.h" #include "SymbolFileDWARF.h" -#include "SymbolFileDWARFDebugMap.h" -#include "SymbolFileDWARFDwo.h" +#include "lldb/Utility/Stream.h" using namespace lldb; using namespace lldb_private; -using namespace std; extern int g_verbose; DWARFCompileUnit::DWARFCompileUnit(SymbolFileDWARF *dwarf2Data) - : m_dwarf2Data(dwarf2Data) {} + : DWARFUnit(dwarf2Data) {} -DWARFCompileUnit::~DWARFCompileUnit() {} - -DWARFCompileUnitSP DWARFCompileUnit::Extract(SymbolFileDWARF *dwarf2Data, - lldb::offset_t *offset_ptr) { - DWARFCompileUnitSP cu_sp(new DWARFCompileUnit(dwarf2Data)); - // Out of memory? - if (cu_sp.get() == NULL) - return nullptr; - - const DWARFDataExtractor &debug_info = dwarf2Data->get_debug_info_data(); +DWARFUnitSP DWARFCompileUnit::Extract(SymbolFileDWARF *dwarf2Data, + const DWARFDataExtractor &debug_info, + lldb::offset_t *offset_ptr) { + // std::make_shared would require the ctor to be public. + std::shared_ptr<DWARFCompileUnit> cu_sp(new DWARFCompileUnit(dwarf2Data)); cu_sp->m_offset = *offset_ptr; @@ -83,259 +57,6 @@ DWARFCompileUnitSP DWARFCompileUnit::Extract(SymbolFileDWARF *dwarf2Data, return nullptr; } -void DWARFCompileUnit::ClearDIEs(bool keep_compile_unit_die) { - if (m_die_array.size() > 1) { - // std::vectors never get any smaller when resized to a smaller size, - // or when clear() or erase() are called, the size will report that it - // is smaller, but the memory allocated remains intact (call capacity() - // to see this). So we need to create a temporary vector and swap the - // contents which will cause just the internal pointers to be swapped - // so that when "tmp_array" goes out of scope, it will destroy the - // contents. - - // Save at least the compile unit DIE - DWARFDebugInfoEntry::collection tmp_array; - m_die_array.swap(tmp_array); - if (keep_compile_unit_die) - m_die_array.push_back(tmp_array.front()); - } - - if (m_dwo_symbol_file) - m_dwo_symbol_file->GetCompileUnit()->ClearDIEs(keep_compile_unit_die); -} - -//---------------------------------------------------------------------- -// ParseCompileUnitDIEsIfNeeded -// -// Parses a compile unit and indexes its DIEs if it hasn't already been -// done. -//---------------------------------------------------------------------- -size_t DWARFCompileUnit::ExtractDIEsIfNeeded(bool cu_die_only) { - const size_t initial_die_array_size = m_die_array.size(); - if ((cu_die_only && initial_die_array_size > 0) || initial_die_array_size > 1) - return 0; // Already parsed - - static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); - Timer scoped_timer( - func_cat, - "%8.8x: DWARFCompileUnit::ExtractDIEsIfNeeded( cu_die_only = %i )", - m_offset, cu_die_only); - - // Set the offset to that of the first DIE and calculate the start of the - // next compilation unit header. - lldb::offset_t offset = GetFirstDIEOffset(); - lldb::offset_t next_cu_offset = GetNextCompileUnitOffset(); - - DWARFDebugInfoEntry die; - // Keep a flat array of the DIE for binary lookup by DIE offset - if (!cu_die_only) { - Log *log( - LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_LOOKUPS)); - if (log) { - m_dwarf2Data->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace( - log, "DWARFCompileUnit::ExtractDIEsIfNeeded () for compile unit at " - ".debug_info[0x%8.8x]", - GetOffset()); - } - } - - uint32_t depth = 0; - // We are in our compile unit, parse starting at the offset - // we were told to parse - const DWARFDataExtractor &debug_info_data = - m_dwarf2Data->get_debug_info_data(); - std::vector<uint32_t> die_index_stack; - die_index_stack.reserve(32); - die_index_stack.push_back(0); - bool prev_die_had_children = false; - DWARFFormValue::FixedFormSizes fixed_form_sizes = - DWARFFormValue::GetFixedFormSizesForAddressSize(GetAddressByteSize(), - m_is_dwarf64); - while (offset < next_cu_offset && - die.FastExtract(debug_info_data, this, fixed_form_sizes, &offset)) { - // if (log) - // log->Printf("0x%8.8x: %*.*s%s%s", - // die.GetOffset(), - // depth * 2, depth * 2, "", - // DW_TAG_value_to_name (die.Tag()), - // die.HasChildren() ? " *" : ""); - - const bool null_die = die.IsNULL(); - if (depth == 0) { - if (initial_die_array_size == 0) - AddCompileUnitDIE(die); - uint64_t base_addr = die.GetAttributeValueAsAddress( - m_dwarf2Data, this, DW_AT_low_pc, LLDB_INVALID_ADDRESS); - if (base_addr == LLDB_INVALID_ADDRESS) - base_addr = die.GetAttributeValueAsAddress(m_dwarf2Data, this, - DW_AT_entry_pc, 0); - SetBaseAddress(base_addr); - if (cu_die_only) - return 1; - } else { - if (null_die) { - if (prev_die_had_children) { - // This will only happen if a DIE says is has children - // but all it contains is a NULL tag. Since we are removing - // the NULL DIEs from the list (saves up to 25% in C++ code), - // we need a way to let the DIE know that it actually doesn't - // have children. - if (!m_die_array.empty()) - m_die_array.back().SetEmptyChildren(true); - } - } else { - die.SetParentIndex(m_die_array.size() - die_index_stack[depth - 1]); - - if (die_index_stack.back()) - m_die_array[die_index_stack.back()].SetSiblingIndex( - m_die_array.size() - die_index_stack.back()); - - // Only push the DIE if it isn't a NULL DIE - m_die_array.push_back(die); - } - } - - if (null_die) { - // NULL DIE. - if (!die_index_stack.empty()) - die_index_stack.pop_back(); - - if (depth > 0) - --depth; - if (depth == 0) - break; // We are done with this compile unit! - - prev_die_had_children = false; - } else { - die_index_stack.back() = m_die_array.size() - 1; - // Normal DIE - const bool die_has_children = die.HasChildren(); - if (die_has_children) { - die_index_stack.push_back(0); - ++depth; - } - prev_die_had_children = die_has_children; - } - } - - // Give a little bit of info if we encounter corrupt DWARF (our offset - // should always terminate at or before the start of the next compilation - // unit header). - if (offset > next_cu_offset) { - m_dwarf2Data->GetObjectFile()->GetModule()->ReportWarning( - "DWARF compile unit extends beyond its bounds cu 0x%8.8x at " - "0x%8.8" PRIx64 "\n", - GetOffset(), offset); - } - - // Since std::vector objects will double their size, we really need to - // make a new array with the perfect size so we don't end up wasting - // space. So here we copy and swap to make sure we don't have any extra - // memory taken up. - - if (m_die_array.size() < m_die_array.capacity()) { - DWARFDebugInfoEntry::collection exact_size_die_array(m_die_array.begin(), - m_die_array.end()); - exact_size_die_array.swap(m_die_array); - } - Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); - if (log && log->GetVerbose()) { - StreamString strm; - Dump(&strm); - if (m_die_array.empty()) - strm.Printf("error: no DIE for compile unit"); - else - m_die_array[0].Dump(m_dwarf2Data, this, strm, UINT32_MAX); - log->PutString(strm.GetString()); - } - - if (!m_dwo_symbol_file) - return m_die_array.size(); - - DWARFCompileUnit *dwo_cu = m_dwo_symbol_file->GetCompileUnit(); - size_t dwo_die_count = dwo_cu->ExtractDIEsIfNeeded(cu_die_only); - return m_die_array.size() + dwo_die_count - - 1; // We have 2 CU die, but we want to count it only as one -} - -void DWARFCompileUnit::AddCompileUnitDIE(DWARFDebugInfoEntry &die) { - assert(m_die_array.empty() && "Compile unit DIE already added"); - AddDIE(die); - - const DWARFDebugInfoEntry &cu_die = m_die_array.front(); - std::unique_ptr<SymbolFileDWARFDwo> dwo_symbol_file = - m_dwarf2Data->GetDwoSymbolFileForCompileUnit(*this, cu_die); - if (!dwo_symbol_file) - return; - - DWARFCompileUnit *dwo_cu = dwo_symbol_file->GetCompileUnit(); - if (!dwo_cu) - return; // Can't fetch the compile unit from the dwo file. - - DWARFDIE dwo_cu_die = dwo_cu->GetCompileUnitDIEOnly(); - if (!dwo_cu_die.IsValid()) - return; // Can't fetch the compile unit DIE from the dwo file. - - uint64_t main_dwo_id = cu_die.GetAttributeValueAsUnsigned( - m_dwarf2Data, this, DW_AT_GNU_dwo_id, 0); - uint64_t sub_dwo_id = - dwo_cu_die.GetAttributeValueAsUnsigned(DW_AT_GNU_dwo_id, 0); - if (main_dwo_id != sub_dwo_id) - return; // The 2 dwo ID isn't match. Don't use the dwo file as it belongs to - // a differectn compilation. - - m_dwo_symbol_file = std::move(dwo_symbol_file); - - dw_addr_t addr_base = cu_die.GetAttributeValueAsUnsigned( - m_dwarf2Data, this, DW_AT_GNU_addr_base, 0); - dw_addr_t ranges_base = cu_die.GetAttributeValueAsUnsigned( - m_dwarf2Data, this, DW_AT_GNU_ranges_base, 0); - dwo_cu->SetAddrBase(addr_base, ranges_base, m_offset); -} - -dw_offset_t DWARFCompileUnit::GetAbbrevOffset() const { - return m_abbrevs ? m_abbrevs->GetOffset() : DW_INVALID_OFFSET; -} - -bool DWARFCompileUnit::Verify(Stream *s) const { - const DWARFDataExtractor &debug_info = m_dwarf2Data->get_debug_info_data(); - bool valid_offset = debug_info.ValidOffset(m_offset); - bool length_OK = debug_info.ValidOffset(GetNextCompileUnitOffset() - 1); - bool version_OK = SymbolFileDWARF::SupportedVersion(m_version); - bool abbr_offset_OK = - m_dwarf2Data->get_debug_abbrev_data().ValidOffset(GetAbbrevOffset()); - bool addr_size_OK = ((m_addr_size == 4) || (m_addr_size == 8)); - if (valid_offset && length_OK && version_OK && addr_size_OK && - abbr_offset_OK) { - return true; - } else { - s->Printf(" 0x%8.8x: ", m_offset); - DumpDataExtractor(m_dwarf2Data->get_debug_info_data(), s, m_offset, - lldb::eFormatHex, 1, Size(), 32, LLDB_INVALID_ADDRESS, 0, - 0); - s->EOL(); - if (valid_offset) { - if (!length_OK) - s->Printf(" The length (0x%8.8x) for this compile unit is too " - "large for the .debug_info provided.\n", - m_length); - if (!version_OK) - s->Printf(" The 16 bit compile unit header version is not " - "supported.\n"); - if (!abbr_offset_OK) - s->Printf(" The offset into the .debug_abbrev section (0x%8.8x) " - "is not valid.\n", - GetAbbrevOffset()); - if (!addr_size_OK) - s->Printf(" The address size is unsupported: 0x%2.2x\n", - m_addr_size); - } else - s->Printf(" The start offset of the compile unit header in the " - ".debug_info is invalid.\n"); - } - return false; -} - void DWARFCompileUnit::Dump(Stream *s) const { s->Printf("0x%8.8x: Compile Unit: length = 0x%8.8x, version = 0x%4.4x, " "abbr_offset = 0x%8.8x, addr_size = 0x%2.2x (next CU at " @@ -344,768 +65,7 @@ void DWARFCompileUnit::Dump(Stream *s) const { GetNextCompileUnitOffset()); } -static uint8_t g_default_addr_size = 4; - -uint8_t DWARFCompileUnit::GetAddressByteSize(const DWARFCompileUnit *cu) { - if (cu) - return cu->GetAddressByteSize(); - return DWARFCompileUnit::GetDefaultAddressSize(); -} - -bool DWARFCompileUnit::IsDWARF64(const DWARFCompileUnit *cu) { - if (cu) - return cu->IsDWARF64(); - return false; -} - -uint8_t DWARFCompileUnit::GetDefaultAddressSize() { - return g_default_addr_size; -} - -void DWARFCompileUnit::SetDefaultAddressSize(uint8_t addr_size) { - g_default_addr_size = addr_size; -} - -lldb::user_id_t DWARFCompileUnit::GetID() const { - dw_offset_t local_id = - m_base_obj_offset != DW_INVALID_OFFSET ? m_base_obj_offset : m_offset; - if (m_dwarf2Data) - return DIERef(local_id, local_id).GetUID(m_dwarf2Data); - else - return local_id; -} - -void DWARFCompileUnit::BuildAddressRangeTable( - SymbolFileDWARF *dwarf2Data, DWARFDebugAranges *debug_aranges) { - // This function is usually called if there in no .debug_aranges section - // in order to produce a compile unit level set of address ranges that - // is accurate. - - size_t num_debug_aranges = debug_aranges->GetNumRanges(); - - // First get the compile unit DIE only and check if it has a DW_AT_ranges - const DWARFDebugInfoEntry *die = GetCompileUnitDIEPtrOnly(); - - const dw_offset_t cu_offset = GetOffset(); - if (die) { - DWARFRangeList ranges; - const size_t num_ranges = - die->GetAttributeAddressRanges(dwarf2Data, this, ranges, false); - if (num_ranges > 0) { - // This compile unit has DW_AT_ranges, assume this is correct if it - // is present since clang no longer makes .debug_aranges by default - // and it emits DW_AT_ranges for DW_TAG_compile_units. GCC also does - // this with recent GCC builds. - for (size_t i = 0; i < num_ranges; ++i) { - const DWARFRangeList::Entry &range = ranges.GetEntryRef(i); - debug_aranges->AppendRange(cu_offset, range.GetRangeBase(), - range.GetRangeEnd()); - } - - return; // We got all of our ranges from the DW_AT_ranges attribute - } - } - // We don't have a DW_AT_ranges attribute, so we need to parse the DWARF - - // If the DIEs weren't parsed, then we don't want all dies for all compile - // units - // to stay loaded when they weren't needed. So we can end up parsing the DWARF - // and then throwing them all away to keep memory usage down. - const bool clear_dies = ExtractDIEsIfNeeded(false) > 1; - - die = DIEPtr(); - if (die) - die->BuildAddressRangeTable(dwarf2Data, this, debug_aranges); - - if (debug_aranges->GetNumRanges() == num_debug_aranges) { - // We got nothing from the functions, maybe we have a line tables only - // situation. Check the line tables and build the arange table from this. - SymbolContext sc; - sc.comp_unit = dwarf2Data->GetCompUnitForDWARFCompUnit(this); - if (sc.comp_unit) { - SymbolFileDWARFDebugMap *debug_map_sym_file = - m_dwarf2Data->GetDebugMapSymfile(); - if (debug_map_sym_file == NULL) { - LineTable *line_table = sc.comp_unit->GetLineTable(); - - if (line_table) { - LineTable::FileAddressRanges file_ranges; - const bool append = true; - const size_t num_ranges = - line_table->GetContiguousFileAddressRanges(file_ranges, append); - for (uint32_t idx = 0; idx < num_ranges; ++idx) { - const LineTable::FileAddressRanges::Entry &range = - file_ranges.GetEntryRef(idx); - debug_aranges->AppendRange(cu_offset, range.GetRangeBase(), - range.GetRangeEnd()); - } - } - } else - debug_map_sym_file->AddOSOARanges(dwarf2Data, debug_aranges); - } - } - - if (debug_aranges->GetNumRanges() == num_debug_aranges) { - // We got nothing from the functions, maybe we have a line tables only - // situation. Check the line tables and build the arange table from this. - SymbolContext sc; - sc.comp_unit = dwarf2Data->GetCompUnitForDWARFCompUnit(this); - if (sc.comp_unit) { - LineTable *line_table = sc.comp_unit->GetLineTable(); - - if (line_table) { - LineTable::FileAddressRanges file_ranges; - const bool append = true; - const size_t num_ranges = - line_table->GetContiguousFileAddressRanges(file_ranges, append); - for (uint32_t idx = 0; idx < num_ranges; ++idx) { - const LineTable::FileAddressRanges::Entry &range = - file_ranges.GetEntryRef(idx); - debug_aranges->AppendRange(GetOffset(), range.GetRangeBase(), - range.GetRangeEnd()); - } - } - } - } - - // Keep memory down by clearing DIEs if this generate function - // caused them to be parsed - if (clear_dies) - ClearDIEs(true); -} - -const DWARFDebugAranges &DWARFCompileUnit::GetFunctionAranges() { - if (m_func_aranges_ap.get() == NULL) { - m_func_aranges_ap.reset(new DWARFDebugAranges()); - Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_ARANGES)); - - if (log) { - m_dwarf2Data->GetObjectFile()->GetModule()->LogMessage( - log, "DWARFCompileUnit::GetFunctionAranges() for compile unit at " - ".debug_info[0x%8.8x]", - GetOffset()); - } - const DWARFDebugInfoEntry *die = DIEPtr(); - if (die) - die->BuildFunctionAddressRangeTable(m_dwarf2Data, this, - m_func_aranges_ap.get()); - - if (m_dwo_symbol_file) { - DWARFCompileUnit *dwo_cu = m_dwo_symbol_file->GetCompileUnit(); - const DWARFDebugInfoEntry *dwo_die = dwo_cu->DIEPtr(); - if (dwo_die) - dwo_die->BuildFunctionAddressRangeTable(m_dwo_symbol_file.get(), dwo_cu, - m_func_aranges_ap.get()); - } - - const bool minimize = false; - m_func_aranges_ap->Sort(minimize); - } - return *m_func_aranges_ap.get(); -} - -DWARFDIE -DWARFCompileUnit::LookupAddress(const dw_addr_t address) { - if (DIE()) { - const DWARFDebugAranges &func_aranges = GetFunctionAranges(); - - // Re-check the aranges auto pointer contents in case it was created above - if (!func_aranges.IsEmpty()) - return GetDIE(func_aranges.FindAddress(address)); - } - return DWARFDIE(); -} - -//---------------------------------------------------------------------- -// Compare function DWARFDebugAranges::Range structures -//---------------------------------------------------------------------- -static bool CompareDIEOffset(const DWARFDebugInfoEntry &die, - const dw_offset_t die_offset) { - return die.GetOffset() < die_offset; -} - -//---------------------------------------------------------------------- -// GetDIE() -// -// Get the DIE (Debug Information Entry) with the specified offset by -// first checking if the DIE is contained within this compile unit and -// grabbing the DIE from this compile unit. Otherwise we grab the DIE -// from the DWARF file. -//---------------------------------------------------------------------- -DWARFDIE -DWARFCompileUnit::GetDIE(dw_offset_t die_offset) { - if (die_offset != DW_INVALID_OFFSET) { - if (m_dwo_symbol_file) - return m_dwo_symbol_file->GetCompileUnit()->GetDIE(die_offset); - - if (ContainsDIEOffset(die_offset)) { - ExtractDIEsIfNeeded(false); - DWARFDebugInfoEntry::iterator end = m_die_array.end(); - DWARFDebugInfoEntry::iterator pos = - lower_bound(m_die_array.begin(), end, die_offset, CompareDIEOffset); - if (pos != end) { - if (die_offset == (*pos).GetOffset()) - return DWARFDIE(this, &(*pos)); - } - } else { - // Don't specify the compile unit offset as we don't know it because the - // DIE belongs to - // a different compile unit in the same symbol file. - return m_dwarf2Data->DebugInfo()->GetDIEForDIEOffset(die_offset); - } - } - return DWARFDIE(); // Not found -} - -size_t DWARFCompileUnit::AppendDIEsWithTag(const dw_tag_t tag, - DWARFDIECollection &dies, - uint32_t depth) const { - size_t old_size = dies.Size(); - DWARFDebugInfoEntry::const_iterator pos; - DWARFDebugInfoEntry::const_iterator end = m_die_array.end(); - for (pos = m_die_array.begin(); pos != end; ++pos) { - if (pos->Tag() == tag) - dies.Append(DWARFDIE(this, &(*pos))); - } - - // Return the number of DIEs added to the collection - return dies.Size() - old_size; -} - -// void -// DWARFCompileUnit::AddGlobalDIEByIndex (uint32_t die_idx) -//{ -// m_global_die_indexes.push_back (die_idx); -//} -// -// -// void -// DWARFCompileUnit::AddGlobal (const DWARFDebugInfoEntry* die) -//{ -// // Indexes to all file level global and static variables -// m_global_die_indexes; -// -// if (m_die_array.empty()) -// return; -// -// const DWARFDebugInfoEntry* first_die = &m_die_array[0]; -// const DWARFDebugInfoEntry* end = first_die + m_die_array.size(); -// if (first_die <= die && die < end) -// m_global_die_indexes.push_back (die - first_die); -//} - -void DWARFCompileUnit::Index(NameToDIE &func_basenames, - NameToDIE &func_fullnames, NameToDIE &func_methods, - NameToDIE &func_selectors, - NameToDIE &objc_class_selectors, - NameToDIE &globals, NameToDIE &types, - NameToDIE &namespaces) { - assert(!m_dwarf2Data->GetBaseCompileUnit() && - "DWARFCompileUnit associated with .dwo or .dwp " - "should not be indexed directly"); - - Log *log(LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); - - if (log) { - m_dwarf2Data->GetObjectFile()->GetModule()->LogMessage( - log, - "DWARFCompileUnit::Index() for compile unit at .debug_info[0x%8.8x]", - GetOffset()); - } - - const LanguageType cu_language = GetLanguageType(); - DWARFFormValue::FixedFormSizes fixed_form_sizes = - DWARFFormValue::GetFixedFormSizesForAddressSize(GetAddressByteSize(), - m_is_dwarf64); - - IndexPrivate(this, cu_language, fixed_form_sizes, GetOffset(), func_basenames, - func_fullnames, func_methods, func_selectors, - objc_class_selectors, globals, types, namespaces); - - SymbolFileDWARFDwo *dwo_symbol_file = GetDwoSymbolFile(); - if (dwo_symbol_file) { - IndexPrivate(dwo_symbol_file->GetCompileUnit(), cu_language, - fixed_form_sizes, GetOffset(), func_basenames, func_fullnames, - func_methods, func_selectors, objc_class_selectors, globals, - types, namespaces); - } -} - -void DWARFCompileUnit::IndexPrivate( - DWARFCompileUnit *dwarf_cu, const LanguageType cu_language, - const DWARFFormValue::FixedFormSizes &fixed_form_sizes, - const dw_offset_t cu_offset, NameToDIE &func_basenames, - NameToDIE &func_fullnames, NameToDIE &func_methods, - NameToDIE &func_selectors, NameToDIE &objc_class_selectors, - NameToDIE &globals, NameToDIE &types, NameToDIE &namespaces) { - DWARFDebugInfoEntry::const_iterator pos; - DWARFDebugInfoEntry::const_iterator begin = dwarf_cu->m_die_array.begin(); - DWARFDebugInfoEntry::const_iterator end = dwarf_cu->m_die_array.end(); - for (pos = begin; pos != end; ++pos) { - const DWARFDebugInfoEntry &die = *pos; - - const dw_tag_t tag = die.Tag(); - - switch (tag) { - case DW_TAG_array_type: - case DW_TAG_base_type: - case DW_TAG_class_type: - case DW_TAG_constant: - case DW_TAG_enumeration_type: - case DW_TAG_inlined_subroutine: - case DW_TAG_namespace: - case DW_TAG_string_type: - case DW_TAG_structure_type: - case DW_TAG_subprogram: - case DW_TAG_subroutine_type: - case DW_TAG_typedef: - case DW_TAG_union_type: - case DW_TAG_unspecified_type: - case DW_TAG_variable: - break; - - default: - continue; - } - - DWARFAttributes attributes; - const char *name = NULL; - const char *mangled_cstr = NULL; - bool is_declaration = false; - // bool is_artificial = false; - bool has_address = false; - bool has_location_or_const_value = false; - bool is_global_or_static_variable = false; - - DWARFFormValue specification_die_form; - const size_t num_attributes = - die.GetAttributes(dwarf_cu, fixed_form_sizes, attributes); - if (num_attributes > 0) { - for (uint32_t i = 0; i < num_attributes; ++i) { - dw_attr_t attr = attributes.AttributeAtIndex(i); - DWARFFormValue form_value; - switch (attr) { - case DW_AT_name: - if (attributes.ExtractFormValueAtIndex(i, form_value)) - name = form_value.AsCString(); - break; - - case DW_AT_declaration: - if (attributes.ExtractFormValueAtIndex(i, form_value)) - is_declaration = form_value.Unsigned() != 0; - break; - - // case DW_AT_artificial: - // if (attributes.ExtractFormValueAtIndex(i, - // form_value)) - // is_artificial = form_value.Unsigned() != 0; - // break; - - case DW_AT_MIPS_linkage_name: - case DW_AT_linkage_name: - if (attributes.ExtractFormValueAtIndex(i, form_value)) - mangled_cstr = form_value.AsCString(); - break; - - case DW_AT_low_pc: - case DW_AT_high_pc: - case DW_AT_ranges: - has_address = true; - break; - - case DW_AT_entry_pc: - has_address = true; - break; - - case DW_AT_location: - case DW_AT_const_value: - has_location_or_const_value = true; - if (tag == DW_TAG_variable) { - const DWARFDebugInfoEntry *parent_die = die.GetParent(); - while (parent_die != NULL) { - switch (parent_die->Tag()) { - case DW_TAG_subprogram: - case DW_TAG_lexical_block: - case DW_TAG_inlined_subroutine: - // Even if this is a function level static, we don't add it. We - // could theoretically - // add these if we wanted to by introspecting into the - // DW_AT_location and seeing - // if the location describes a hard coded address, but we dont - // want the performance - // penalty of that right now. - is_global_or_static_variable = false; - // if - // (attributes.ExtractFormValueAtIndex(dwarf2Data, - // i, form_value)) - // { - // // If we have valid block - // data, then we have location - // expression bytes - // // that are fixed (not a - // location list). - // const uint8_t *block_data = - // form_value.BlockData(); - // if (block_data) - // { - // uint32_t block_length = - // form_value.Unsigned(); - // if (block_length == 1 + - // attributes.CompileUnitAtIndex(i)->GetAddressByteSize()) - // { - // if (block_data[0] == - // DW_OP_addr) - // add_die = true; - // } - // } - // } - parent_die = NULL; // Terminate the while loop. - break; - - case DW_TAG_compile_unit: - is_global_or_static_variable = true; - parent_die = NULL; // Terminate the while loop. - break; - - default: - parent_die = - parent_die->GetParent(); // Keep going in the while loop. - break; - } - } - } - break; - - case DW_AT_specification: - if (attributes.ExtractFormValueAtIndex(i, form_value)) - specification_die_form = form_value; - break; - } - } - } - - switch (tag) { - case DW_TAG_subprogram: - if (has_address) { - if (name) { - ObjCLanguage::MethodName objc_method(name, true); - if (objc_method.IsValid(true)) { - ConstString objc_class_name_with_category( - objc_method.GetClassNameWithCategory()); - ConstString objc_selector_name(objc_method.GetSelector()); - ConstString objc_fullname_no_category_name( - objc_method.GetFullNameWithoutCategory(true)); - ConstString objc_class_name_no_category(objc_method.GetClassName()); - func_fullnames.Insert(ConstString(name), - DIERef(cu_offset, die.GetOffset())); - if (objc_class_name_with_category) - objc_class_selectors.Insert(objc_class_name_with_category, - DIERef(cu_offset, die.GetOffset())); - if (objc_class_name_no_category && - objc_class_name_no_category != objc_class_name_with_category) - objc_class_selectors.Insert(objc_class_name_no_category, - DIERef(cu_offset, die.GetOffset())); - if (objc_selector_name) - func_selectors.Insert(objc_selector_name, - DIERef(cu_offset, die.GetOffset())); - if (objc_fullname_no_category_name) - func_fullnames.Insert(objc_fullname_no_category_name, - DIERef(cu_offset, die.GetOffset())); - } - // If we have a mangled name, then the DW_AT_name attribute - // is usually the method name without the class or any parameters - const DWARFDebugInfoEntry *parent = die.GetParent(); - bool is_method = false; - if (parent) { - dw_tag_t parent_tag = parent->Tag(); - if (parent_tag == DW_TAG_class_type || - parent_tag == DW_TAG_structure_type) { - is_method = true; - } else { - if (specification_die_form.IsValid()) { - DWARFDIE specification_die = - dwarf_cu->GetSymbolFileDWARF()->DebugInfo()->GetDIE( - DIERef(specification_die_form)); - if (specification_die.GetParent().IsStructOrClass()) - is_method = true; - } - } - } - - if (is_method) - func_methods.Insert(ConstString(name), - DIERef(cu_offset, die.GetOffset())); - else - func_basenames.Insert(ConstString(name), - DIERef(cu_offset, die.GetOffset())); - - if (!is_method && !mangled_cstr && !objc_method.IsValid(true)) - func_fullnames.Insert(ConstString(name), - DIERef(cu_offset, die.GetOffset())); - } - if (mangled_cstr) { - // Make sure our mangled name isn't the same string table entry - // as our name. If it starts with '_', then it is ok, else compare - // the string to make sure it isn't the same and we don't end up - // with duplicate entries - if (name && name != mangled_cstr && - ((mangled_cstr[0] == '_') || - (::strcmp(name, mangled_cstr) != 0))) { - Mangled mangled(ConstString(mangled_cstr), true); - func_fullnames.Insert(mangled.GetMangledName(), - DIERef(cu_offset, die.GetOffset())); - ConstString demangled = mangled.GetDemangledName(cu_language); - if (demangled) - func_fullnames.Insert(demangled, - DIERef(cu_offset, die.GetOffset())); - } - } - } - break; - - case DW_TAG_inlined_subroutine: - if (has_address) { - if (name) - func_basenames.Insert(ConstString(name), - DIERef(cu_offset, die.GetOffset())); - if (mangled_cstr) { - // Make sure our mangled name isn't the same string table entry - // as our name. If it starts with '_', then it is ok, else compare - // the string to make sure it isn't the same and we don't end up - // with duplicate entries - if (name && name != mangled_cstr && - ((mangled_cstr[0] == '_') || - (::strcmp(name, mangled_cstr) != 0))) { - Mangled mangled(ConstString(mangled_cstr), true); - func_fullnames.Insert(mangled.GetMangledName(), - DIERef(cu_offset, die.GetOffset())); - ConstString demangled = mangled.GetDemangledName(cu_language); - if (demangled) - func_fullnames.Insert(demangled, - DIERef(cu_offset, die.GetOffset())); - } - } else - func_fullnames.Insert(ConstString(name), - DIERef(cu_offset, die.GetOffset())); - } - break; - - case DW_TAG_array_type: - case DW_TAG_base_type: - case DW_TAG_class_type: - case DW_TAG_constant: - case DW_TAG_enumeration_type: - case DW_TAG_string_type: - case DW_TAG_structure_type: - case DW_TAG_subroutine_type: - case DW_TAG_typedef: - case DW_TAG_union_type: - case DW_TAG_unspecified_type: - if (name && !is_declaration) - types.Insert(ConstString(name), DIERef(cu_offset, die.GetOffset())); - if (mangled_cstr && !is_declaration) - types.Insert(ConstString(mangled_cstr), - DIERef(cu_offset, die.GetOffset())); - break; - - case DW_TAG_namespace: - if (name) - namespaces.Insert(ConstString(name), - DIERef(cu_offset, die.GetOffset())); - break; - - case DW_TAG_variable: - if (name && has_location_or_const_value && is_global_or_static_variable) { - globals.Insert(ConstString(name), DIERef(cu_offset, die.GetOffset())); - // Be sure to include variables by their mangled and demangled - // names if they have any since a variable can have a basename - // "i", a mangled named "_ZN12_GLOBAL__N_11iE" and a demangled - // mangled name "(anonymous namespace)::i"... - - // Make sure our mangled name isn't the same string table entry - // as our name. If it starts with '_', then it is ok, else compare - // the string to make sure it isn't the same and we don't end up - // with duplicate entries - if (mangled_cstr && name != mangled_cstr && - ((mangled_cstr[0] == '_') || (::strcmp(name, mangled_cstr) != 0))) { - Mangled mangled(ConstString(mangled_cstr), true); - globals.Insert(mangled.GetMangledName(), - DIERef(cu_offset, die.GetOffset())); - ConstString demangled = mangled.GetDemangledName(cu_language); - if (demangled) - globals.Insert(demangled, DIERef(cu_offset, die.GetOffset())); - } - } - break; - - default: - continue; - } - } -} - -bool DWARFCompileUnit::Supports_unnamed_objc_bitfields() { - if (GetProducer() == eProducerClang) { - const uint32_t major_version = GetProducerVersionMajor(); - if (major_version > 425 || - (major_version == 425 && GetProducerVersionUpdate() >= 13)) - return true; - else - return false; - } - return true; // Assume all other compilers didn't have incorrect ObjC bitfield - // info -} - -bool DWARFCompileUnit::Supports_DW_AT_APPLE_objc_complete_type() { - if (GetProducer() == eProducerLLVMGCC) - return false; - return true; -} - -bool DWARFCompileUnit::DW_AT_decl_file_attributes_are_invalid() { - // llvm-gcc makes completely invalid decl file attributes and won't ever - // be fixed, so we need to know to ignore these. - return GetProducer() == eProducerLLVMGCC; -} - -void DWARFCompileUnit::ParseProducerInfo() { - m_producer_version_major = UINT32_MAX; - m_producer_version_minor = UINT32_MAX; - m_producer_version_update = UINT32_MAX; - - const DWARFDebugInfoEntry *die = GetCompileUnitDIEPtrOnly(); - if (die) { - - const char *producer_cstr = die->GetAttributeValueAsString( - m_dwarf2Data, this, DW_AT_producer, NULL); - if (producer_cstr) { - RegularExpression llvm_gcc_regex( - llvm::StringRef("^4\\.[012]\\.[01] \\(Based on Apple " - "Inc\\. build [0-9]+\\) \\(LLVM build " - "[\\.0-9]+\\)$")); - if (llvm_gcc_regex.Execute(llvm::StringRef(producer_cstr))) { - m_producer = eProducerLLVMGCC; - } else if (strstr(producer_cstr, "clang")) { - static RegularExpression g_clang_version_regex( - llvm::StringRef("clang-([0-9]+)\\.([0-9]+)\\.([0-9]+)")); - RegularExpression::Match regex_match(3); - if (g_clang_version_regex.Execute(llvm::StringRef(producer_cstr), - ®ex_match)) { - std::string str; - if (regex_match.GetMatchAtIndex(producer_cstr, 1, str)) - m_producer_version_major = - StringConvert::ToUInt32(str.c_str(), UINT32_MAX, 10); - if (regex_match.GetMatchAtIndex(producer_cstr, 2, str)) - m_producer_version_minor = - StringConvert::ToUInt32(str.c_str(), UINT32_MAX, 10); - if (regex_match.GetMatchAtIndex(producer_cstr, 3, str)) - m_producer_version_update = - StringConvert::ToUInt32(str.c_str(), UINT32_MAX, 10); - } - m_producer = eProducerClang; - } else if (strstr(producer_cstr, "GNU")) - m_producer = eProducerGCC; - } - } - if (m_producer == eProducerInvalid) - m_producer = eProcucerOther; -} - -DWARFCompileUnit::Producer DWARFCompileUnit::GetProducer() { - if (m_producer == eProducerInvalid) - ParseProducerInfo(); - return m_producer; -} - -uint32_t DWARFCompileUnit::GetProducerVersionMajor() { - if (m_producer_version_major == 0) - ParseProducerInfo(); - return m_producer_version_major; -} - -uint32_t DWARFCompileUnit::GetProducerVersionMinor() { - if (m_producer_version_minor == 0) - ParseProducerInfo(); - return m_producer_version_minor; -} - -uint32_t DWARFCompileUnit::GetProducerVersionUpdate() { - if (m_producer_version_update == 0) - ParseProducerInfo(); - return m_producer_version_update; -} - -LanguageType DWARFCompileUnit::LanguageTypeFromDWARF(uint64_t val) { - // Note: user languages between lo_user and hi_user - // must be handled explicitly here. - switch (val) { - case DW_LANG_Mips_Assembler: - return eLanguageTypeMipsAssembler; - case DW_LANG_GOOGLE_RenderScript: - return eLanguageTypeExtRenderScript; - default: - return static_cast<LanguageType>(val); - } -} - -LanguageType DWARFCompileUnit::GetLanguageType() { - if (m_language_type != eLanguageTypeUnknown) - return m_language_type; - - const DWARFDebugInfoEntry *die = GetCompileUnitDIEPtrOnly(); - if (die) - m_language_type = LanguageTypeFromDWARF(die->GetAttributeValueAsUnsigned( - m_dwarf2Data, this, DW_AT_language, 0)); - return m_language_type; -} - -bool DWARFCompileUnit::IsDWARF64() const { return m_is_dwarf64; } - -bool DWARFCompileUnit::GetIsOptimized() { - if (m_is_optimized == eLazyBoolCalculate) { - const DWARFDebugInfoEntry *die = GetCompileUnitDIEPtrOnly(); - if (die) { - m_is_optimized = eLazyBoolNo; - if (die->GetAttributeValueAsUnsigned(m_dwarf2Data, this, - DW_AT_APPLE_optimized, 0) == 1) { - m_is_optimized = eLazyBoolYes; - } - } - } - if (m_is_optimized == eLazyBoolYes) { - return true; - } else { - return false; - } -} - -DWARFFormValue::FixedFormSizes DWARFCompileUnit::GetFixedFormSizes() { - return DWARFFormValue::GetFixedFormSizesForAddressSize(GetAddressByteSize(), - IsDWARF64()); -} - -TypeSystem *DWARFCompileUnit::GetTypeSystem() { - if (m_dwarf2Data) - return m_dwarf2Data->GetTypeSystemForLanguage(GetLanguageType()); - else - return nullptr; -} - -void DWARFCompileUnit::SetUserData(void *d) { - m_user_data = d; - if (m_dwo_symbol_file) - m_dwo_symbol_file->GetCompileUnit()->SetUserData(d); -} - -void DWARFCompileUnit::SetAddrBase(dw_addr_t addr_base, - dw_addr_t ranges_base, - dw_offset_t base_obj_offset) { - m_addr_base = addr_base; - m_ranges_base = ranges_base; - m_base_obj_offset = base_obj_offset; -} -lldb::ByteOrder DWARFCompileUnit::GetByteOrder() const { - return m_dwarf2Data->GetObjectFile()->GetByteOrder(); +const lldb_private::DWARFDataExtractor &DWARFCompileUnit::GetData() const { + return m_dwarf->get_debug_info_data(); } |