diff options
Diffstat (limited to 'contrib/llvm/tools/lldb/source/Plugins/Language/CPlusPlus/LibCxx.cpp')
| -rw-r--r-- | contrib/llvm/tools/lldb/source/Plugins/Language/CPlusPlus/LibCxx.cpp | 1083 |
1 files changed, 586 insertions, 497 deletions
diff --git a/contrib/llvm/tools/lldb/source/Plugins/Language/CPlusPlus/LibCxx.cpp b/contrib/llvm/tools/lldb/source/Plugins/Language/CPlusPlus/LibCxx.cpp index beb89b8..82441a6 100644 --- a/contrib/llvm/tools/lldb/source/Plugins/Language/CPlusPlus/LibCxx.cpp +++ b/contrib/llvm/tools/lldb/source/Plugins/Language/CPlusPlus/LibCxx.cpp @@ -27,202 +27,211 @@ #include "lldb/Host/Endian.h" #include "lldb/Symbol/ClangASTContext.h" #include "lldb/Target/Target.h" +#include "lldb/Utility/ProcessStructReader.h" using namespace lldb; using namespace lldb_private; using namespace lldb_private::formatters; -bool -lldb_private::formatters::LibcxxSmartPointerSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options) -{ - ValueObjectSP valobj_sp(valobj.GetNonSyntheticValue()); - if (!valobj_sp) - return false; - ValueObjectSP ptr_sp(valobj_sp->GetChildMemberWithName(ConstString("__ptr_"), true)); - ValueObjectSP count_sp(valobj_sp->GetChildAtNamePath( {ConstString("__cntrl_"),ConstString("__shared_owners_")} )); - ValueObjectSP weakcount_sp(valobj_sp->GetChildAtNamePath( {ConstString("__cntrl_"),ConstString("__shared_weak_owners_")} )); - - if (!ptr_sp) - return false; - - if (ptr_sp->GetValueAsUnsigned(0) == 0) - { - stream.Printf("nullptr"); - return true; - } - else - { - bool print_pointee = false; - Error error; - ValueObjectSP pointee_sp = ptr_sp->Dereference(error); - if (pointee_sp && error.Success()) - { - if (pointee_sp->DumpPrintableRepresentation(stream, - ValueObject::eValueObjectRepresentationStyleSummary, - lldb::eFormatInvalid, - ValueObject::ePrintableRepresentationSpecialCasesDisable, - false)) - print_pointee = true; - } - if (!print_pointee) - stream.Printf("ptr = 0x%" PRIx64, ptr_sp->GetValueAsUnsigned(0)); - } - - if (count_sp) - stream.Printf(" strong=%" PRIu64, 1+count_sp->GetValueAsUnsigned(0)); +bool lldb_private::formatters::LibcxxSmartPointerSummaryProvider( + ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) { + ValueObjectSP valobj_sp(valobj.GetNonSyntheticValue()); + if (!valobj_sp) + return false; + ValueObjectSP ptr_sp( + valobj_sp->GetChildMemberWithName(ConstString("__ptr_"), true)); + ValueObjectSP count_sp(valobj_sp->GetChildAtNamePath( + {ConstString("__cntrl_"), ConstString("__shared_owners_")})); + ValueObjectSP weakcount_sp(valobj_sp->GetChildAtNamePath( + {ConstString("__cntrl_"), ConstString("__shared_weak_owners_")})); + + if (!ptr_sp) + return false; - if (weakcount_sp) - stream.Printf(" weak=%" PRIu64, 1+weakcount_sp->GetValueAsUnsigned(0)); - + if (ptr_sp->GetValueAsUnsigned(0) == 0) { + stream.Printf("nullptr"); return true; + } else { + bool print_pointee = false; + Error error; + ValueObjectSP pointee_sp = ptr_sp->Dereference(error); + if (pointee_sp && error.Success()) { + if (pointee_sp->DumpPrintableRepresentation( + stream, ValueObject::eValueObjectRepresentationStyleSummary, + lldb::eFormatInvalid, + ValueObject::PrintableRepresentationSpecialCases::eDisable, + false)) + print_pointee = true; + } + if (!print_pointee) + stream.Printf("ptr = 0x%" PRIx64, ptr_sp->GetValueAsUnsigned(0)); + } + + if (count_sp) + stream.Printf(" strong=%" PRIu64, 1 + count_sp->GetValueAsUnsigned(0)); + + if (weakcount_sp) + stream.Printf(" weak=%" PRIu64, 1 + weakcount_sp->GetValueAsUnsigned(0)); + + return true; } -lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::LibcxxVectorBoolSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : - SyntheticChildrenFrontEnd(*valobj_sp), - m_bool_type(), - m_exe_ctx_ref(), - m_count(0), - m_base_data_address(0), - m_children() -{ - if (valobj_sp) - { - Update(); - m_bool_type = valobj_sp->GetCompilerType().GetBasicTypeFromAST(lldb::eBasicTypeBool); - } +lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd:: + LibcxxVectorBoolSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp) + : SyntheticChildrenFrontEnd(*valobj_sp), m_bool_type(), m_exe_ctx_ref(), + m_count(0), m_base_data_address(0), m_children() { + if (valobj_sp) { + Update(); + m_bool_type = + valobj_sp->GetCompilerType().GetBasicTypeFromAST(lldb::eBasicTypeBool); + } } -size_t -lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::CalculateNumChildren () -{ - return m_count; +size_t lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd:: + CalculateNumChildren() { + return m_count; } lldb::ValueObjectSP -lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::GetChildAtIndex (size_t idx) -{ - auto iter = m_children.find(idx), - end = m_children.end(); - if (iter != end) - return iter->second; - if (idx >= m_count) - return ValueObjectSP(); - if (m_base_data_address == 0 || m_count == 0) - return ValueObjectSP(); - if (!m_bool_type) - return ValueObjectSP(); - size_t byte_idx = (idx >> 3); // divide by 8 to get byte index - size_t bit_index = (idx & 7); // efficient idx % 8 for bit index - lldb::addr_t byte_location = m_base_data_address + byte_idx; - ProcessSP process_sp(m_exe_ctx_ref.GetProcessSP()); - if (!process_sp) - return ValueObjectSP(); - uint8_t byte = 0; - uint8_t mask = 0; - Error err; - size_t bytes_read = process_sp->ReadMemory(byte_location, &byte, 1, err); - if (err.Fail() || bytes_read == 0) - return ValueObjectSP(); - switch (bit_index) - { - case 0: - mask = 1; break; - case 1: - mask = 2; break; - case 2: - mask = 4; break; - case 3: - mask = 8; break; - case 4: - mask = 16; break; - case 5: - mask = 32; break; - case 6: - mask = 64; break; - case 7: - mask = 128; break; - default: - return ValueObjectSP(); - } - bool bit_set = ((byte & mask) != 0); - DataBufferSP buffer_sp(new DataBufferHeap(m_bool_type.GetByteSize(nullptr), 0)); - if (bit_set && buffer_sp && buffer_sp->GetBytes()) - *(buffer_sp->GetBytes()) = 1; // regardless of endianness, anything non-zero is true - StreamString name; name.Printf("[%" PRIu64 "]", (uint64_t)idx); - ValueObjectSP retval_sp(CreateValueObjectFromData(name.GetData(), DataExtractor(buffer_sp, process_sp->GetByteOrder(), process_sp->GetAddressByteSize()), m_exe_ctx_ref, m_bool_type)); - if (retval_sp) - m_children[idx] = retval_sp; - return retval_sp; +lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::GetChildAtIndex( + size_t idx) { + auto iter = m_children.find(idx), end = m_children.end(); + if (iter != end) + return iter->second; + if (idx >= m_count) + return ValueObjectSP(); + if (m_base_data_address == 0 || m_count == 0) + return ValueObjectSP(); + if (!m_bool_type) + return ValueObjectSP(); + size_t byte_idx = (idx >> 3); // divide by 8 to get byte index + size_t bit_index = (idx & 7); // efficient idx % 8 for bit index + lldb::addr_t byte_location = m_base_data_address + byte_idx; + ProcessSP process_sp(m_exe_ctx_ref.GetProcessSP()); + if (!process_sp) + return ValueObjectSP(); + uint8_t byte = 0; + uint8_t mask = 0; + Error err; + size_t bytes_read = process_sp->ReadMemory(byte_location, &byte, 1, err); + if (err.Fail() || bytes_read == 0) + return ValueObjectSP(); + switch (bit_index) { + case 0: + mask = 1; + break; + case 1: + mask = 2; + break; + case 2: + mask = 4; + break; + case 3: + mask = 8; + break; + case 4: + mask = 16; + break; + case 5: + mask = 32; + break; + case 6: + mask = 64; + break; + case 7: + mask = 128; + break; + default: + return ValueObjectSP(); + } + bool bit_set = ((byte & mask) != 0); + DataBufferSP buffer_sp( + new DataBufferHeap(m_bool_type.GetByteSize(nullptr), 0)); + if (bit_set && buffer_sp && buffer_sp->GetBytes()) + *(buffer_sp->GetBytes()) = + 1; // regardless of endianness, anything non-zero is true + StreamString name; + name.Printf("[%" PRIu64 "]", (uint64_t)idx); + ValueObjectSP retval_sp(CreateValueObjectFromData( + name.GetString(), DataExtractor(buffer_sp, process_sp->GetByteOrder(), + process_sp->GetAddressByteSize()), + m_exe_ctx_ref, m_bool_type)); + if (retval_sp) + m_children[idx] = retval_sp; + return retval_sp; } /*(std::__1::vector<std::__1::allocator<bool> >) vBool = { __begin_ = 0x00000001001000e0 __size_ = 56 __cap_alloc_ = { - std::__1::__libcpp_compressed_pair_imp<unsigned long, std::__1::allocator<unsigned long> > = { + std::__1::__libcpp_compressed_pair_imp<unsigned long, + std::__1::allocator<unsigned long> > = { __first_ = 1 } } }*/ -bool -lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::Update() -{ - m_children.clear(); - ValueObjectSP valobj_sp = m_backend.GetSP(); - if (!valobj_sp) - return false; - m_exe_ctx_ref = valobj_sp->GetExecutionContextRef(); - ValueObjectSP size_sp(valobj_sp->GetChildMemberWithName(ConstString("__size_"), true)); - if (!size_sp) - return false; - m_count = size_sp->GetValueAsUnsigned(0); - if (!m_count) - return true; - ValueObjectSP begin_sp(valobj_sp->GetChildMemberWithName(ConstString("__begin_"), true)); - if (!begin_sp) - { - m_count = 0; - return false; - } - m_base_data_address = begin_sp->GetValueAsUnsigned(0); - if (!m_base_data_address) - { - m_count = 0; - return false; - } +bool lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::Update() { + m_children.clear(); + ValueObjectSP valobj_sp = m_backend.GetSP(); + if (!valobj_sp) return false; + m_exe_ctx_ref = valobj_sp->GetExecutionContextRef(); + ValueObjectSP size_sp( + valobj_sp->GetChildMemberWithName(ConstString("__size_"), true)); + if (!size_sp) + return false; + m_count = size_sp->GetValueAsUnsigned(0); + if (!m_count) + return true; + ValueObjectSP begin_sp( + valobj_sp->GetChildMemberWithName(ConstString("__begin_"), true)); + if (!begin_sp) { + m_count = 0; + return false; + } + m_base_data_address = begin_sp->GetValueAsUnsigned(0); + if (!m_base_data_address) { + m_count = 0; + return false; + } + return false; } -bool -lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::MightHaveChildren () -{ - return true; +bool lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd:: + MightHaveChildren() { + return true; } -size_t -lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) -{ - if (!m_count || !m_base_data_address) - return UINT32_MAX; - const char* item_name = name.GetCString(); - uint32_t idx = ExtractIndexFromString(item_name); - if (idx < UINT32_MAX && idx >= CalculateNumChildren()) - return UINT32_MAX; - return idx; +size_t lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd:: + GetIndexOfChildWithName(const ConstString &name) { + if (!m_count || !m_base_data_address) + return UINT32_MAX; + const char *item_name = name.GetCString(); + uint32_t idx = ExtractIndexFromString(item_name); + if (idx < UINT32_MAX && idx >= CalculateNumChildren()) + return UINT32_MAX; + return idx; } -lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::~LibcxxVectorBoolSyntheticFrontEnd() = default; +lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd:: + ~LibcxxVectorBoolSyntheticFrontEnd() = default; -SyntheticChildrenFrontEnd* -lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) -{ - return (valobj_sp ? new LibcxxVectorBoolSyntheticFrontEnd(valobj_sp) : nullptr); +SyntheticChildrenFrontEnd * +lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEndCreator( + CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { + return (valobj_sp ? new LibcxxVectorBoolSyntheticFrontEnd(valobj_sp) + : nullptr); } /* (lldb) fr var ibeg --raw --ptr-depth 1 - (std::__1::__map_iterator<std::__1::__tree_iterator<std::__1::pair<int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, std::__1::__tree_node<std::__1::pair<int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, void *> *, long> >) ibeg = { + (std::__1::__map_iterator<std::__1::__tree_iterator<std::__1::pair<int, + std::__1::basic_string<char, std::__1::char_traits<char>, + std::__1::allocator<char> > >, std::__1::__tree_node<std::__1::pair<int, + std::__1::basic_string<char, std::__1::char_traits<char>, + std::__1::allocator<char> > >, void *> *, long> >) ibeg = { __i_ = { __ptr_ = 0x0000000100103870 { std::__1::__tree_node_base<void *> = { @@ -238,82 +247,144 @@ lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEndCreator (CXXSynthetic second = { std::string } */ -lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::LibCxxMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : - SyntheticChildrenFrontEnd(*valobj_sp), - m_pair_ptr() -{ - if (valobj_sp) - Update(); +lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd:: + LibCxxMapIteratorSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp) + : SyntheticChildrenFrontEnd(*valobj_sp), m_pair_ptr(), m_pair_sp() { + if (valobj_sp) + Update(); } -bool -lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::Update() -{ - ValueObjectSP valobj_sp = m_backend.GetSP(); - if (!valobj_sp) - return false; - - TargetSP target_sp(valobj_sp->GetTargetSP()); - - if (!target_sp) - return false; +bool lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::Update() { + m_pair_sp.reset(); + m_pair_ptr = nullptr; - if (!valobj_sp) - return false; + ValueObjectSP valobj_sp = m_backend.GetSP(); + if (!valobj_sp) + return false; + + TargetSP target_sp(valobj_sp->GetTargetSP()); - // this must be a ValueObject* because it is a child of the ValueObject we are producing children for - // it if were a ValueObjectSP, we would end up with a loop (iterator -> synthetic -> child -> parent == iterator) - // and that would in turn leak memory by never allowing the ValueObjects to die and free their memory - m_pair_ptr = valobj_sp->GetValueForExpressionPath(".__i_.__ptr_->__value_", - nullptr, - nullptr, - nullptr, - ValueObject::GetValueForExpressionPathOptions().DontCheckDotVsArrowSyntax().SetSyntheticChildrenTraversal(ValueObject::GetValueForExpressionPathOptions::SyntheticChildrenTraversal::None), - nullptr).get(); - + if (!target_sp) return false; + + if (!valobj_sp) + return false; + + static ConstString g___i_("__i_"); + + // this must be a ValueObject* because it is a child of the ValueObject we are + // producing children for + // it if were a ValueObjectSP, we would end up with a loop (iterator -> + // synthetic -> child -> parent == iterator) + // and that would in turn leak memory by never allowing the ValueObjects to + // die and free their memory + m_pair_ptr = valobj_sp + ->GetValueForExpressionPath( + ".__i_.__ptr_->__value_", nullptr, nullptr, + ValueObject::GetValueForExpressionPathOptions() + .DontCheckDotVsArrowSyntax() + .SetSyntheticChildrenTraversal( + ValueObject::GetValueForExpressionPathOptions:: + SyntheticChildrenTraversal::None), + nullptr) + .get(); + + if (!m_pair_ptr) { + m_pair_ptr = valobj_sp + ->GetValueForExpressionPath( + ".__i_.__ptr_", nullptr, nullptr, + ValueObject::GetValueForExpressionPathOptions() + .DontCheckDotVsArrowSyntax() + .SetSyntheticChildrenTraversal( + ValueObject::GetValueForExpressionPathOptions:: + SyntheticChildrenTraversal::None), + nullptr) + .get(); + if (m_pair_ptr) { + auto __i_(valobj_sp->GetChildMemberWithName(g___i_, true)); + lldb::TemplateArgumentKind kind; + if (!__i_) { + m_pair_ptr = nullptr; + return false; + } + CompilerType pair_type(__i_->GetCompilerType().GetTemplateArgument(0, kind)); + std::string name; uint64_t bit_offset_ptr; uint32_t bitfield_bit_size_ptr; bool is_bitfield_ptr; + pair_type = pair_type.GetFieldAtIndex(0, name, &bit_offset_ptr, &bitfield_bit_size_ptr, &is_bitfield_ptr); + if (!pair_type) { + m_pair_ptr = nullptr; + return false; + } + + auto addr(m_pair_ptr->GetValueAsUnsigned(LLDB_INVALID_ADDRESS)); + m_pair_ptr = nullptr; + if (addr && addr!=LLDB_INVALID_ADDRESS) { + ClangASTContext *ast_ctx = llvm::dyn_cast_or_null<ClangASTContext>(pair_type.GetTypeSystem()); + if (!ast_ctx) + return false; + CompilerType tree_node_type = ast_ctx->CreateStructForIdentifier(ConstString(), { + {"ptr0",ast_ctx->GetBasicType(lldb::eBasicTypeVoid).GetPointerType()}, + {"ptr1",ast_ctx->GetBasicType(lldb::eBasicTypeVoid).GetPointerType()}, + {"ptr2",ast_ctx->GetBasicType(lldb::eBasicTypeVoid).GetPointerType()}, + {"cw",ast_ctx->GetBasicType(lldb::eBasicTypeBool)}, + {"payload",pair_type} + }); + DataBufferSP buffer_sp(new DataBufferHeap(tree_node_type.GetByteSize(nullptr),0)); + ProcessSP process_sp(target_sp->GetProcessSP()); + Error error; + process_sp->ReadMemory(addr, buffer_sp->GetBytes(), buffer_sp->GetByteSize(), error); + if (error.Fail()) + return false; + DataExtractor extractor(buffer_sp, process_sp->GetByteOrder(), process_sp->GetAddressByteSize()); + auto pair_sp = CreateValueObjectFromData("pair", extractor, valobj_sp->GetExecutionContextRef(), tree_node_type); + if (pair_sp) + m_pair_sp = pair_sp->GetChildAtIndex(4,true); + } + } + } + + return false; } -size_t -lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::CalculateNumChildren () -{ - return 2; +size_t lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd:: + CalculateNumChildren() { + return 2; } lldb::ValueObjectSP -lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::GetChildAtIndex (size_t idx) -{ - if (!m_pair_ptr) - return lldb::ValueObjectSP(); +lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::GetChildAtIndex( + size_t idx) { + if (m_pair_ptr) return m_pair_ptr->GetChildAtIndex(idx, true); + if (m_pair_sp) + return m_pair_sp->GetChildAtIndex(idx, true); + return lldb::ValueObjectSP(); } -bool -lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::MightHaveChildren () -{ - return true; +bool lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd:: + MightHaveChildren() { + return true; } -size_t -lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) -{ - if (name == ConstString("first")) - return 0; - if (name == ConstString("second")) - return 1; - return UINT32_MAX; +size_t lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd:: + GetIndexOfChildWithName(const ConstString &name) { + if (name == ConstString("first")) + return 0; + if (name == ConstString("second")) + return 1; + return UINT32_MAX; } -lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::~LibCxxMapIteratorSyntheticFrontEnd () -{ - // this will be deleted when its parent dies (since it's a child object) - //delete m_pair_ptr; +lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd:: + ~LibCxxMapIteratorSyntheticFrontEnd() { + // this will be deleted when its parent dies (since it's a child object) + // delete m_pair_ptr; } -SyntheticChildrenFrontEnd* -lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) -{ - return (valobj_sp ? new LibCxxMapIteratorSyntheticFrontEnd(valobj_sp) : nullptr); +SyntheticChildrenFrontEnd * +lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEndCreator( + CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { + return (valobj_sp ? new LibCxxMapIteratorSyntheticFrontEnd(valobj_sp) + : nullptr); } /* @@ -325,323 +396,341 @@ lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEndCreator (CXXSyntheti } */ -SyntheticChildrenFrontEnd* -lldb_private::formatters::LibCxxVectorIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) -{ - static ConstString g_item_name; - if (!g_item_name) - g_item_name.SetCString("__i"); - return (valobj_sp ? new VectorIteratorSyntheticFrontEnd(valobj_sp, g_item_name) : nullptr); +SyntheticChildrenFrontEnd * +lldb_private::formatters::LibCxxVectorIteratorSyntheticFrontEndCreator( + CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { + static ConstString g_item_name; + if (!g_item_name) + g_item_name.SetCString("__i"); + return (valobj_sp + ? new VectorIteratorSyntheticFrontEnd(valobj_sp, g_item_name) + : nullptr); } -lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::LibcxxSharedPtrSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : - SyntheticChildrenFrontEnd(*valobj_sp), - m_cntrl(nullptr), - m_count_sp(), - m_weak_count_sp(), - m_ptr_size(0), - m_byte_order(lldb::eByteOrderInvalid) -{ - if (valobj_sp) - Update(); +lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd:: + LibcxxSharedPtrSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp) + : SyntheticChildrenFrontEnd(*valobj_sp), m_cntrl(nullptr), m_count_sp(), + m_weak_count_sp(), m_ptr_size(0), m_byte_order(lldb::eByteOrderInvalid) { + if (valobj_sp) + Update(); } -size_t -lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::CalculateNumChildren () -{ - return (m_cntrl ? 1 : 0); +size_t lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd:: + CalculateNumChildren() { + return (m_cntrl ? 1 : 0); } lldb::ValueObjectSP -lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::GetChildAtIndex (size_t idx) -{ - if (!m_cntrl) - return lldb::ValueObjectSP(); - - ValueObjectSP valobj_sp = m_backend.GetSP(); - if (!valobj_sp) +lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::GetChildAtIndex( + size_t idx) { + if (!m_cntrl) + return lldb::ValueObjectSP(); + + ValueObjectSP valobj_sp = m_backend.GetSP(); + if (!valobj_sp) + return lldb::ValueObjectSP(); + + if (idx == 0) + return valobj_sp->GetChildMemberWithName(ConstString("__ptr_"), true); + + if (idx > 2) + return lldb::ValueObjectSP(); + + if (idx == 1) { + if (!m_count_sp) { + ValueObjectSP shared_owners_sp(m_cntrl->GetChildMemberWithName( + ConstString("__shared_owners_"), true)); + if (!shared_owners_sp) return lldb::ValueObjectSP(); - - if (idx == 0) - return valobj_sp->GetChildMemberWithName(ConstString("__ptr_"), true); - - if (idx > 2) - return lldb::ValueObjectSP(); - - if (idx == 1) - { - if (!m_count_sp) - { - ValueObjectSP shared_owners_sp(m_cntrl->GetChildMemberWithName(ConstString("__shared_owners_"),true)); - if (!shared_owners_sp) - return lldb::ValueObjectSP(); - uint64_t count = 1 + shared_owners_sp->GetValueAsUnsigned(0); - DataExtractor data(&count, 8, m_byte_order, m_ptr_size); - m_count_sp = CreateValueObjectFromData("count", data, valobj_sp->GetExecutionContextRef(), shared_owners_sp->GetCompilerType()); - } - return m_count_sp; + uint64_t count = 1 + shared_owners_sp->GetValueAsUnsigned(0); + DataExtractor data(&count, 8, m_byte_order, m_ptr_size); + m_count_sp = CreateValueObjectFromData( + "count", data, valobj_sp->GetExecutionContextRef(), + shared_owners_sp->GetCompilerType()); } - else /* if (idx == 2) */ - { - if (!m_weak_count_sp) - { - ValueObjectSP shared_weak_owners_sp(m_cntrl->GetChildMemberWithName(ConstString("__shared_weak_owners_"),true)); - if (!shared_weak_owners_sp) - return lldb::ValueObjectSP(); - uint64_t count = 1 + shared_weak_owners_sp->GetValueAsUnsigned(0); - DataExtractor data(&count, 8, m_byte_order, m_ptr_size); - m_weak_count_sp = CreateValueObjectFromData("count", data, valobj_sp->GetExecutionContextRef(), shared_weak_owners_sp->GetCompilerType()); - } - return m_weak_count_sp; + return m_count_sp; + } else /* if (idx == 2) */ + { + if (!m_weak_count_sp) { + ValueObjectSP shared_weak_owners_sp(m_cntrl->GetChildMemberWithName( + ConstString("__shared_weak_owners_"), true)); + if (!shared_weak_owners_sp) + return lldb::ValueObjectSP(); + uint64_t count = 1 + shared_weak_owners_sp->GetValueAsUnsigned(0); + DataExtractor data(&count, 8, m_byte_order, m_ptr_size); + m_weak_count_sp = CreateValueObjectFromData( + "count", data, valobj_sp->GetExecutionContextRef(), + shared_weak_owners_sp->GetCompilerType()); } + return m_weak_count_sp; + } } -bool -lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::Update() -{ - m_count_sp.reset(); - m_weak_count_sp.reset(); - m_cntrl = nullptr; - - ValueObjectSP valobj_sp = m_backend.GetSP(); - if (!valobj_sp) - return false; - - TargetSP target_sp(valobj_sp->GetTargetSP()); - if (!target_sp) - return false; - - m_byte_order = target_sp->GetArchitecture().GetByteOrder(); - m_ptr_size = target_sp->GetArchitecture().GetAddressByteSize(); - - lldb::ValueObjectSP cntrl_sp(valobj_sp->GetChildMemberWithName(ConstString("__cntrl_"),true)); - - m_cntrl = cntrl_sp.get(); // need to store the raw pointer to avoid a circular dependency +bool lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::Update() { + m_count_sp.reset(); + m_weak_count_sp.reset(); + m_cntrl = nullptr; + + ValueObjectSP valobj_sp = m_backend.GetSP(); + if (!valobj_sp) + return false; + + TargetSP target_sp(valobj_sp->GetTargetSP()); + if (!target_sp) return false; + + m_byte_order = target_sp->GetArchitecture().GetByteOrder(); + m_ptr_size = target_sp->GetArchitecture().GetAddressByteSize(); + + lldb::ValueObjectSP cntrl_sp( + valobj_sp->GetChildMemberWithName(ConstString("__cntrl_"), true)); + + m_cntrl = cntrl_sp.get(); // need to store the raw pointer to avoid a circular + // dependency + return false; } -bool -lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::MightHaveChildren () -{ - return true; +bool lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd:: + MightHaveChildren() { + return true; } -size_t -lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) -{ - if (name == ConstString("__ptr_")) - return 0; - if (name == ConstString("count")) - return 1; - if (name == ConstString("weak_count")) - return 2; - return UINT32_MAX; +size_t lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd:: + GetIndexOfChildWithName(const ConstString &name) { + if (name == ConstString("__ptr_")) + return 0; + if (name == ConstString("count")) + return 1; + if (name == ConstString("weak_count")) + return 2; + return UINT32_MAX; } -lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::~LibcxxSharedPtrSyntheticFrontEnd() = default; +lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd:: + ~LibcxxSharedPtrSyntheticFrontEnd() = default; -SyntheticChildrenFrontEnd* -lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) -{ - return (valobj_sp ? new LibcxxSharedPtrSyntheticFrontEnd(valobj_sp) : nullptr); +SyntheticChildrenFrontEnd * +lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEndCreator( + CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { + return (valobj_sp ? new LibcxxSharedPtrSyntheticFrontEnd(valobj_sp) + : nullptr); } -bool -lldb_private::formatters::LibcxxContainerSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options) -{ - if (valobj.IsPointerType()) - { - uint64_t value = valobj.GetValueAsUnsigned(0); - if (!value) - return false; - stream.Printf("0x%016" PRIx64 " ", value); - } - return FormatEntity::FormatStringRef("size=${svar%#}", stream, nullptr, nullptr, nullptr, &valobj, false, false); +bool lldb_private::formatters::LibcxxContainerSummaryProvider( + ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) { + if (valobj.IsPointerType()) { + uint64_t value = valobj.GetValueAsUnsigned(0); + if (!value) + return false; + stream.Printf("0x%016" PRIx64 " ", value); + } + return FormatEntity::FormatStringRef("size=${svar%#}", stream, nullptr, + nullptr, nullptr, &valobj, false, false); } // the field layout in a libc++ string (cap, side, data or data, size, cap) -enum LibcxxStringLayoutMode -{ - eLibcxxStringLayoutModeCSD = 0, - eLibcxxStringLayoutModeDSC = 1, - eLibcxxStringLayoutModeInvalid = 0xffff +enum LibcxxStringLayoutMode { + eLibcxxStringLayoutModeCSD = 0, + eLibcxxStringLayoutModeDSC = 1, + eLibcxxStringLayoutModeInvalid = 0xffff }; // this function abstracts away the layout and mode details of a libc++ string // and returns the address of the data and the size ready for callers to consume -static bool -ExtractLibcxxStringInfo (ValueObject& valobj, - ValueObjectSP &location_sp, - uint64_t& size) -{ - ValueObjectSP D(valobj.GetChildAtIndexPath({0,0,0,0})); - if (!D) - return false; - - ValueObjectSP layout_decider(D->GetChildAtIndexPath({0,0})); - - // this child should exist - if (!layout_decider) +static bool ExtractLibcxxStringInfo(ValueObject &valobj, + ValueObjectSP &location_sp, + uint64_t &size) { + ValueObjectSP D(valobj.GetChildAtIndexPath({0, 0, 0, 0})); + if (!D) + return false; + + ValueObjectSP layout_decider(D->GetChildAtIndexPath({0, 0})); + + // this child should exist + if (!layout_decider) + return false; + + ConstString g_data_name("__data_"); + ConstString g_size_name("__size_"); + bool short_mode = false; // this means the string is in short-mode and the + // data is stored inline + LibcxxStringLayoutMode layout = (layout_decider->GetName() == g_data_name) + ? eLibcxxStringLayoutModeDSC + : eLibcxxStringLayoutModeCSD; + uint64_t size_mode_value = 0; + + if (layout == eLibcxxStringLayoutModeDSC) { + ValueObjectSP size_mode(D->GetChildAtIndexPath({1, 1, 0})); + if (!size_mode) + return false; + + if (size_mode->GetName() != g_size_name) { + // we are hitting the padding structure, move along + size_mode = D->GetChildAtIndexPath({1, 1, 1}); + if (!size_mode) return false; - - ConstString g_data_name("__data_"); - ConstString g_size_name("__size_"); - bool short_mode = false; // this means the string is in short-mode and the data is stored inline - LibcxxStringLayoutMode layout = (layout_decider->GetName() == g_data_name) ? eLibcxxStringLayoutModeDSC : eLibcxxStringLayoutModeCSD; - uint64_t size_mode_value = 0; - - if (layout == eLibcxxStringLayoutModeDSC) - { - ValueObjectSP size_mode(D->GetChildAtIndexPath({1,1,0})); - if (!size_mode) - return false; - - if (size_mode->GetName() != g_size_name) - { - // we are hitting the padding structure, move along - size_mode = D->GetChildAtIndexPath({1,1,1}); - if (!size_mode) - return false; - } - - size_mode_value = (size_mode->GetValueAsUnsigned(0)); - short_mode = ((size_mode_value & 0x80) == 0); - } - else - { - ValueObjectSP size_mode(D->GetChildAtIndexPath({1,0,0})); - if (!size_mode) - return false; - - size_mode_value = (size_mode->GetValueAsUnsigned(0)); - short_mode = ((size_mode_value & 1) == 0); - } - - if (short_mode) - { - ValueObjectSP s(D->GetChildAtIndex(1, true)); - if (!s) - return false; - location_sp = s->GetChildAtIndex((layout == eLibcxxStringLayoutModeDSC) ? 0 : 1, true); - size = (layout == eLibcxxStringLayoutModeDSC) ? size_mode_value : ((size_mode_value >> 1) % 256); - return (location_sp.get() != nullptr); - } - else - { - ValueObjectSP l(D->GetChildAtIndex(0, true)); - if (!l) - return false; - // we can use the layout_decider object as the data pointer - location_sp = (layout == eLibcxxStringLayoutModeDSC) ? layout_decider : l->GetChildAtIndex(2, true); - ValueObjectSP size_vo(l->GetChildAtIndex(1, true)); - if (!size_vo || !location_sp) - return false; - size = size_vo->GetValueAsUnsigned(0); - return true; } + + size_mode_value = (size_mode->GetValueAsUnsigned(0)); + short_mode = ((size_mode_value & 0x80) == 0); + } else { + ValueObjectSP size_mode(D->GetChildAtIndexPath({1, 0, 0})); + if (!size_mode) + return false; + + size_mode_value = (size_mode->GetValueAsUnsigned(0)); + short_mode = ((size_mode_value & 1) == 0); + } + + if (short_mode) { + ValueObjectSP s(D->GetChildAtIndex(1, true)); + if (!s) + return false; + location_sp = s->GetChildAtIndex( + (layout == eLibcxxStringLayoutModeDSC) ? 0 : 1, true); + size = (layout == eLibcxxStringLayoutModeDSC) + ? size_mode_value + : ((size_mode_value >> 1) % 256); + return (location_sp.get() != nullptr); + } else { + ValueObjectSP l(D->GetChildAtIndex(0, true)); + if (!l) + return false; + // we can use the layout_decider object as the data pointer + location_sp = (layout == eLibcxxStringLayoutModeDSC) + ? layout_decider + : l->GetChildAtIndex(2, true); + ValueObjectSP size_vo(l->GetChildAtIndex(1, true)); + if (!size_vo || !location_sp) + return false; + size = size_vo->GetValueAsUnsigned(0); + return true; + } } -bool -lldb_private::formatters::LibcxxWStringSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& summary_options) -{ - uint64_t size = 0; - ValueObjectSP location_sp; - if (!ExtractLibcxxStringInfo(valobj, location_sp, size)) - return false; - if (size == 0) - { - stream.Printf("L\"\""); - return true; - } - if (!location_sp) - return false; - - DataExtractor extractor; - - StringPrinter::ReadBufferAndDumpToStreamOptions options(valobj); - - if (summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryCapped) - { - const auto max_size = valobj.GetTargetSP()->GetMaximumSizeOfStringSummary(); - if (size > max_size) - { - size = max_size; - options.SetIsTruncated(true); - } - } - location_sp->GetPointeeData(extractor, 0, size); - - // std::wstring::size() is measured in 'characters', not bytes - auto wchar_t_size = valobj.GetTargetSP()->GetScratchClangASTContext()->GetBasicType(lldb::eBasicTypeWChar).GetByteSize(nullptr); - - options.SetData(extractor); - options.SetStream(&stream); - options.SetPrefixToken("L"); - options.SetQuote('"'); - options.SetSourceSize(size); - options.SetBinaryZeroIsTerminator(false); - - switch (wchar_t_size) - { - case 1: - StringPrinter::ReadBufferAndDumpToStream<lldb_private::formatters::StringPrinter::StringElementType::UTF8>(options); - break; - - case 2: - lldb_private::formatters::StringPrinter::ReadBufferAndDumpToStream<lldb_private::formatters::StringPrinter::StringElementType::UTF16>(options); - break; - - case 4: - lldb_private::formatters::StringPrinter::ReadBufferAndDumpToStream<lldb_private::formatters::StringPrinter::StringElementType::UTF32>(options); - break; - - default: - stream.Printf("size for wchar_t is not valid"); - return true; +bool lldb_private::formatters::LibcxxWStringSummaryProvider( + ValueObject &valobj, Stream &stream, + const TypeSummaryOptions &summary_options) { + uint64_t size = 0; + ValueObjectSP location_sp; + if (!ExtractLibcxxStringInfo(valobj, location_sp, size)) + return false; + if (size == 0) { + stream.Printf("L\"\""); + return true; + } + if (!location_sp) + return false; + + DataExtractor extractor; + + StringPrinter::ReadBufferAndDumpToStreamOptions options(valobj); + + if (summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryCapped) { + const auto max_size = valobj.GetTargetSP()->GetMaximumSizeOfStringSummary(); + if (size > max_size) { + size = max_size; + options.SetIsTruncated(true); } - + } + location_sp->GetPointeeData(extractor, 0, size); + + // std::wstring::size() is measured in 'characters', not bytes + auto wchar_t_size = valobj.GetTargetSP() + ->GetScratchClangASTContext() + ->GetBasicType(lldb::eBasicTypeWChar) + .GetByteSize(nullptr); + + options.SetData(extractor); + options.SetStream(&stream); + options.SetPrefixToken("L"); + options.SetQuote('"'); + options.SetSourceSize(size); + options.SetBinaryZeroIsTerminator(false); + + switch (wchar_t_size) { + case 1: + StringPrinter::ReadBufferAndDumpToStream< + lldb_private::formatters::StringPrinter::StringElementType::UTF8>( + options); + break; + + case 2: + lldb_private::formatters::StringPrinter::ReadBufferAndDumpToStream< + lldb_private::formatters::StringPrinter::StringElementType::UTF16>( + options); + break; + + case 4: + lldb_private::formatters::StringPrinter::ReadBufferAndDumpToStream< + lldb_private::formatters::StringPrinter::StringElementType::UTF32>( + options); + break; + + default: + stream.Printf("size for wchar_t is not valid"); return true; + } + + return true; } -bool -lldb_private::formatters::LibcxxStringSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& summary_options) -{ - uint64_t size = 0; - ValueObjectSP location_sp; - - if (!ExtractLibcxxStringInfo(valobj, location_sp, size)) - return false; - - if (size == 0) - { - stream.Printf("\"\""); - return true; - } - - if (!location_sp) - return false; - - StringPrinter::ReadBufferAndDumpToStreamOptions options(valobj); - - DataExtractor extractor; - if (summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryCapped) - { - const auto max_size = valobj.GetTargetSP()->GetMaximumSizeOfStringSummary(); - if (size > max_size) - { - size = max_size; - options.SetIsTruncated(true); - } - } - location_sp->GetPointeeData(extractor, 0, size); - - options.SetData(extractor); - options.SetStream(&stream); - options.SetPrefixToken(nullptr); - options.SetQuote('"'); - options.SetSourceSize(size); - options.SetBinaryZeroIsTerminator(false); - StringPrinter::ReadBufferAndDumpToStream<StringPrinter::StringElementType::ASCII>(options); - +bool lldb_private::formatters::LibcxxStringSummaryProvider( + ValueObject &valobj, Stream &stream, + const TypeSummaryOptions &summary_options) { + uint64_t size = 0; + ValueObjectSP location_sp; + + if (!ExtractLibcxxStringInfo(valobj, location_sp, size)) + return false; + + if (size == 0) { + stream.Printf("\"\""); return true; + } + + if (!location_sp) + return false; + + StringPrinter::ReadBufferAndDumpToStreamOptions options(valobj); + + DataExtractor extractor; + if (summary_options.GetCapping() == TypeSummaryCapping::eTypeSummaryCapped) { + const auto max_size = valobj.GetTargetSP()->GetMaximumSizeOfStringSummary(); + if (size > max_size) { + size = max_size; + options.SetIsTruncated(true); + } + } + location_sp->GetPointeeData(extractor, 0, size); + + options.SetData(extractor); + options.SetStream(&stream); + options.SetPrefixToken(nullptr); + options.SetQuote('"'); + options.SetSourceSize(size); + options.SetBinaryZeroIsTerminator(false); + StringPrinter::ReadBufferAndDumpToStream< + StringPrinter::StringElementType::ASCII>(options); + + return true; +} + +class LibcxxFunctionFrontEnd : public SyntheticValueProviderFrontEnd { +public: + LibcxxFunctionFrontEnd(ValueObject &backend) + : SyntheticValueProviderFrontEnd(backend) {} + + lldb::ValueObjectSP GetSyntheticValue() override { + static ConstString g___f_("__f_"); + return m_backend.GetChildMemberWithName(g___f_, true); + } +}; + +SyntheticChildrenFrontEnd * +lldb_private::formatters::LibcxxFunctionFrontEndCreator( + CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { + if (valobj_sp) + return new LibcxxFunctionFrontEnd(*valobj_sp); + return nullptr; } |
