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Diffstat (limited to 'source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp')
| -rw-r--r-- | source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp | 755 |
1 files changed, 755 insertions, 0 deletions
diff --git a/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp b/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp new file mode 100644 index 0000000000000..f44b2bb97b2b0 --- /dev/null +++ b/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp @@ -0,0 +1,755 @@ +//===-- DWARFUnit.cpp -------------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "DWARFUnit.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/LLDBAssert.h" +#include "lldb/Utility/StreamString.h" +#include "lldb/Utility/Timer.h" + +#include "DWARFDIECollection.h" +#include "DWARFDebugAranges.h" +#include "DWARFDebugInfo.h" +#include "LogChannelDWARF.h" +#include "SymbolFileDWARFDebugMap.h" +#include "SymbolFileDWARFDwo.h" + +using namespace lldb; +using namespace lldb_private; +using namespace std; + +extern int g_verbose; + +DWARFUnit::DWARFUnit(SymbolFileDWARF *dwarf) + : m_dwarf(dwarf), m_cancel_scopes(false) {} + +DWARFUnit::~DWARFUnit() {} + +//---------------------------------------------------------------------- +// Parses first DIE of a compile unit. +//---------------------------------------------------------------------- +void DWARFUnit::ExtractUnitDIEIfNeeded() { + { + llvm::sys::ScopedReader lock(m_first_die_mutex); + if (m_first_die) + return; // Already parsed + } + llvm::sys::ScopedWriter lock(m_first_die_mutex); + if (m_first_die) + return; // Already parsed + + static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); + Timer scoped_timer( + func_cat, "%8.8x: DWARFUnit::ExtractUnitDIEIfNeeded()", m_offset); + + // Set the offset to that of the first DIE and calculate the start of the + // next compilation unit header. + lldb::offset_t offset = GetFirstDIEOffset(); + + // We are in our compile unit, parse starting at the offset we were told to + // parse + const DWARFDataExtractor &data = GetData(); + DWARFFormValue::FixedFormSizes fixed_form_sizes = + DWARFFormValue::GetFixedFormSizesForAddressSize(GetAddressByteSize(), + IsDWARF64()); + if (offset < GetNextCompileUnitOffset() && + m_first_die.FastExtract(data, this, fixed_form_sizes, &offset)) { + AddUnitDIE(m_first_die); + return; + } + + ExtractDIEsEndCheck(offset); +} + +//---------------------------------------------------------------------- +// Parses a compile unit and indexes its DIEs if it hasn't already been done. +// It will leave this compile unit extracted forever. +//---------------------------------------------------------------------- +void DWARFUnit::ExtractDIEsIfNeeded() { + m_cancel_scopes = true; + + { + llvm::sys::ScopedReader lock(m_die_array_mutex); + if (!m_die_array.empty()) + return; // Already parsed + } + llvm::sys::ScopedWriter lock(m_die_array_mutex); + if (!m_die_array.empty()) + return; // Already parsed + + ExtractDIEsRWLocked(); +} + +//---------------------------------------------------------------------- +// Parses a compile unit and indexes its DIEs if it hasn't already been done. +// It will clear this compile unit after returned instance gets out of scope, +// no other ScopedExtractDIEs instance is running for this compile unit +// and no ExtractDIEsIfNeeded() has been executed during this ScopedExtractDIEs +// lifetime. +//---------------------------------------------------------------------- +DWARFUnit::ScopedExtractDIEs DWARFUnit::ExtractDIEsScoped() { + ScopedExtractDIEs scoped(this); + + { + llvm::sys::ScopedReader lock(m_die_array_mutex); + if (!m_die_array.empty()) + return scoped; // Already parsed + } + llvm::sys::ScopedWriter lock(m_die_array_mutex); + if (!m_die_array.empty()) + return scoped; // Already parsed + + // Otherwise m_die_array would be already populated. + lldbassert(!m_cancel_scopes); + + ExtractDIEsRWLocked(); + scoped.m_clear_dies = true; + return scoped; +} + +DWARFUnit::ScopedExtractDIEs::ScopedExtractDIEs(DWARFUnit *cu) : m_cu(cu) { + lldbassert(m_cu); + m_cu->m_die_array_scoped_mutex.lock_shared(); +} + +DWARFUnit::ScopedExtractDIEs::~ScopedExtractDIEs() { + if (!m_cu) + return; + m_cu->m_die_array_scoped_mutex.unlock_shared(); + if (!m_clear_dies || m_cu->m_cancel_scopes) + return; + // Be sure no other ScopedExtractDIEs is running anymore. + llvm::sys::ScopedWriter lock_scoped(m_cu->m_die_array_scoped_mutex); + llvm::sys::ScopedWriter lock(m_cu->m_die_array_mutex); + if (m_cu->m_cancel_scopes) + return; + m_cu->ClearDIEsRWLocked(); +} + +DWARFUnit::ScopedExtractDIEs::ScopedExtractDIEs(ScopedExtractDIEs &&rhs) + : m_cu(rhs.m_cu), m_clear_dies(rhs.m_clear_dies) { + rhs.m_cu = nullptr; +} + +DWARFUnit::ScopedExtractDIEs &DWARFUnit::ScopedExtractDIEs::operator=( + DWARFUnit::ScopedExtractDIEs &&rhs) { + m_cu = rhs.m_cu; + rhs.m_cu = nullptr; + m_clear_dies = rhs.m_clear_dies; + return *this; +} + +//---------------------------------------------------------------------- +// Parses a compile unit and indexes its DIEs, m_die_array_mutex must be +// held R/W and m_die_array must be empty. +//---------------------------------------------------------------------- +void DWARFUnit::ExtractDIEsRWLocked() { + llvm::sys::ScopedWriter first_die_lock(m_first_die_mutex); + + static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); + Timer scoped_timer( + func_cat, "%8.8x: DWARFUnit::ExtractDIEsIfNeeded()", m_offset); + + // 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 + Log *log( + LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_LOOKUPS)); + if (log) { + m_dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace( + log, + "DWARFUnit::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 &data = GetData(); + 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(), + IsDWARF64()); + while (offset < next_cu_offset && + die.FastExtract(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) { + assert(m_die_array.empty() && "Compile unit DIE already added"); + + // The average bytes per DIE entry has been seen to be around 14-20 so + // lets pre-reserve half of that since we are now stripping the NULL + // tags. + + // Only reserve the memory if we are adding children of the main + // compile unit DIE. The compile unit DIE is always the first entry, so + // if our size is 1, then we are adding the first compile unit child + // DIE and should reserve the memory. + m_die_array.reserve(GetDebugInfoSize() / 24); + m_die_array.push_back(die); + + if (!m_first_die) + AddUnitDIE(m_die_array.front()); + } 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; + } + } + + if (!m_die_array.empty()) { + lldbassert(!m_first_die || m_first_die == m_die_array.front()); + m_first_die = m_die_array.front(); + } + + m_die_array.shrink_to_fit(); + + ExtractDIEsEndCheck(offset); + + if (m_dwo_symbol_file) { + DWARFUnit *dwo_cu = m_dwo_symbol_file->GetCompileUnit(); + dwo_cu->ExtractDIEsIfNeeded(); + } +} + +//-------------------------------------------------------------------------- +// Final checks for both ExtractUnitDIEIfNeeded() and ExtractDIEsIfNeeded(). +//-------------------------------------------------------------------------- +void DWARFUnit::ExtractDIEsEndCheck(lldb::offset_t offset) const { + // 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 > GetNextCompileUnitOffset()) { + m_dwarf->GetObjectFile()->GetModule()->ReportWarning( + "DWARF compile unit extends beyond its bounds cu 0x%8.8x at " + "0x%8.8" PRIx64 "\n", + GetOffset(), offset); + } + + 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_dwarf, this, strm, UINT32_MAX); + log->PutString(strm.GetString()); + } +} + +// m_die_array_mutex must be already held as read/write. +void DWARFUnit::AddUnitDIE(const DWARFDebugInfoEntry &cu_die) { + uint64_t base_addr = cu_die.GetAttributeValueAsAddress( + m_dwarf, this, DW_AT_low_pc, LLDB_INVALID_ADDRESS); + if (base_addr == LLDB_INVALID_ADDRESS) + base_addr = cu_die.GetAttributeValueAsAddress( + m_dwarf, this, DW_AT_entry_pc, 0); + SetBaseAddress(base_addr); + + std::unique_ptr<SymbolFileDWARFDwo> dwo_symbol_file = + m_dwarf->GetDwoSymbolFileForCompileUnit(*this, cu_die); + if (!dwo_symbol_file) + return; + + DWARFUnit *dwo_cu = dwo_symbol_file->GetCompileUnit(); + if (!dwo_cu) + return; // Can't fetch the compile unit from the dwo file. + + DWARFBaseDIE dwo_cu_die = dwo_cu->GetUnitDIEOnly(); + 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_dwarf, 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_dwarf, this, DW_AT_GNU_addr_base, 0); + dw_addr_t ranges_base = cu_die.GetAttributeValueAsUnsigned( + m_dwarf, this, DW_AT_GNU_ranges_base, 0); + dwo_cu->SetAddrBase(addr_base, ranges_base, m_offset); +} + +DWARFDIE DWARFUnit::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(); +} + +size_t DWARFUnit::AppendDIEsWithTag(const dw_tag_t tag, + DWARFDIECollection &dies, + uint32_t depth) const { + size_t old_size = dies.Size(); + { + llvm::sys::ScopedReader lock(m_die_array_mutex); + 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; +} + + +lldb::user_id_t DWARFUnit::GetID() const { + dw_offset_t local_id = + m_base_obj_offset != DW_INVALID_OFFSET ? m_base_obj_offset : m_offset; + if (m_dwarf) + return DIERef(local_id, local_id).GetUID(m_dwarf); + else + return local_id; +} + +dw_offset_t DWARFUnit::GetNextCompileUnitOffset() const { + return m_offset + GetLengthByteSize() + GetLength(); +} + +size_t DWARFUnit::GetDebugInfoSize() const { + return GetLengthByteSize() + GetLength() - GetHeaderByteSize(); +} + +const DWARFAbbreviationDeclarationSet *DWARFUnit::GetAbbreviations() const { + return m_abbrevs; +} + +dw_offset_t DWARFUnit::GetAbbrevOffset() const { + return m_abbrevs ? m_abbrevs->GetOffset() : DW_INVALID_OFFSET; +} + +void DWARFUnit::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; +} + +// It may be called only with m_die_array_mutex held R/W. +void DWARFUnit::ClearDIEsRWLocked() { + m_die_array.clear(); + m_die_array.shrink_to_fit(); + + if (m_dwo_symbol_file) + m_dwo_symbol_file->GetCompileUnit()->ClearDIEsRWLocked(); +} + +void DWARFUnit::BuildAddressRangeTable(SymbolFileDWARF *dwarf, + 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 = GetUnitDIEPtrOnly(); + + const dw_offset_t cu_offset = GetOffset(); + if (die) { + DWARFRangeList ranges; + const size_t num_ranges = + die->GetAttributeAddressRanges(dwarf, 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. + ScopedExtractDIEs clear_dies(ExtractDIEsScoped()); + + die = DIEPtr(); + if (die) + die->BuildAddressRangeTable(dwarf, 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 = dwarf->GetCompUnitForDWARFCompUnit(this); + if (sc.comp_unit) { + SymbolFileDWARFDebugMap *debug_map_sym_file = + m_dwarf->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(dwarf, 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 = dwarf->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()); + } + } + } + } +} + +lldb::ByteOrder DWARFUnit::GetByteOrder() const { + return m_dwarf->GetObjectFile()->GetByteOrder(); +} + +TypeSystem *DWARFUnit::GetTypeSystem() { + if (m_dwarf) + return m_dwarf->GetTypeSystemForLanguage(GetLanguageType()); + else + return nullptr; +} + +DWARFFormValue::FixedFormSizes DWARFUnit::GetFixedFormSizes() { + return DWARFFormValue::GetFixedFormSizesForAddressSize(GetAddressByteSize(), + IsDWARF64()); +} + +void DWARFUnit::SetBaseAddress(dw_addr_t base_addr) { m_base_addr = base_addr; } + +//---------------------------------------------------------------------- +// 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 +DWARFUnit::GetDIE(dw_offset_t die_offset) { + if (die_offset != DW_INVALID_OFFSET) { + if (GetDwoSymbolFile()) + return GetDwoSymbolFile()->GetCompileUnit()->GetDIE(die_offset); + + if (ContainsDIEOffset(die_offset)) { + ExtractDIEsIfNeeded(); + DWARFDebugInfoEntry::const_iterator end = m_die_array.cend(); + DWARFDebugInfoEntry::const_iterator pos = + lower_bound(m_die_array.cbegin(), 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_dwarf->DebugInfo()->GetDIEForDIEOffset(die_offset); + } + } + return DWARFDIE(); // Not found +} + +uint8_t DWARFUnit::GetAddressByteSize(const DWARFUnit *cu) { + if (cu) + return cu->GetAddressByteSize(); + return DWARFUnit::GetDefaultAddressSize(); +} + +bool DWARFUnit::IsDWARF64(const DWARFUnit *cu) { + if (cu) + return cu->IsDWARF64(); + return false; +} + +uint8_t DWARFUnit::GetDefaultAddressSize() { return 4; } + +void *DWARFUnit::GetUserData() const { return m_user_data; } + +void DWARFUnit::SetUserData(void *d) { + m_user_data = d; + if (m_dwo_symbol_file) + m_dwo_symbol_file->GetCompileUnit()->SetUserData(d); +} + +bool DWARFUnit::Supports_DW_AT_APPLE_objc_complete_type() { + if (GetProducer() == eProducerLLVMGCC) + return false; + return true; +} + +bool DWARFUnit::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; +} + +bool DWARFUnit::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 +} + +SymbolFileDWARF *DWARFUnit::GetSymbolFileDWARF() const { return m_dwarf; } + +void DWARFUnit::ParseProducerInfo() { + m_producer_version_major = UINT32_MAX; + m_producer_version_minor = UINT32_MAX; + m_producer_version_update = UINT32_MAX; + + const DWARFDebugInfoEntry *die = GetUnitDIEPtrOnly(); + if (die) { + + const char *producer_cstr = + die->GetAttributeValueAsString(m_dwarf, 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; +} + +DWARFProducer DWARFUnit::GetProducer() { + if (m_producer == eProducerInvalid) + ParseProducerInfo(); + return m_producer; +} + +uint32_t DWARFUnit::GetProducerVersionMajor() { + if (m_producer_version_major == 0) + ParseProducerInfo(); + return m_producer_version_major; +} + +uint32_t DWARFUnit::GetProducerVersionMinor() { + if (m_producer_version_minor == 0) + ParseProducerInfo(); + return m_producer_version_minor; +} + +uint32_t DWARFUnit::GetProducerVersionUpdate() { + if (m_producer_version_update == 0) + ParseProducerInfo(); + return m_producer_version_update; +} +LanguageType DWARFUnit::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 DWARFUnit::GetLanguageType() { + if (m_language_type != eLanguageTypeUnknown) + return m_language_type; + + const DWARFDebugInfoEntry *die = GetUnitDIEPtrOnly(); + if (die) + m_language_type = LanguageTypeFromDWARF( + die->GetAttributeValueAsUnsigned(m_dwarf, this, DW_AT_language, 0)); + return m_language_type; +} + +bool DWARFUnit::GetIsOptimized() { + if (m_is_optimized == eLazyBoolCalculate) { + const DWARFDebugInfoEntry *die = GetUnitDIEPtrOnly(); + if (die) { + m_is_optimized = eLazyBoolNo; + if (die->GetAttributeValueAsUnsigned(m_dwarf, this, DW_AT_APPLE_optimized, + 0) == 1) { + m_is_optimized = eLazyBoolYes; + } + } + } + return m_is_optimized == eLazyBoolYes; +} + +SymbolFileDWARFDwo *DWARFUnit::GetDwoSymbolFile() const { + return m_dwo_symbol_file.get(); +} + +dw_offset_t DWARFUnit::GetBaseObjOffset() const { return m_base_obj_offset; } + +const DWARFDebugAranges &DWARFUnit::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_dwarf->GetObjectFile()->GetModule()->LogMessage( + log, + "DWARFUnit::GetFunctionAranges() for compile unit at " + ".debug_info[0x%8.8x]", + GetOffset()); + } + const DWARFDebugInfoEntry *die = DIEPtr(); + if (die) + die->BuildFunctionAddressRangeTable(m_dwarf, this, + m_func_aranges_ap.get()); + + if (m_dwo_symbol_file) { + DWARFUnit *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(); +} + |