| //===-- LibCxx.cpp ----------------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "lldb/lldb-python.h" |
| |
| #include "lldb/DataFormatters/CXXFormatterFunctions.h" |
| |
| #include "lldb/Core/DataBufferHeap.h" |
| #include "lldb/Core/Debugger.h" |
| #include "lldb/Core/Error.h" |
| #include "lldb/Core/Stream.h" |
| #include "lldb/Core/ValueObject.h" |
| #include "lldb/Core/ValueObjectConstResult.h" |
| #include "lldb/Host/Endian.h" |
| #include "lldb/Symbol/ClangASTContext.h" |
| #include "lldb/Target/ObjCLanguageRuntime.h" |
| #include "lldb/Target/Target.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| using namespace lldb_private::formatters; |
| |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::LibcxxVectorBoolSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : |
| SyntheticChildrenFrontEnd(*valobj_sp.get()), |
| m_exe_ctx_ref(), |
| m_count(0), |
| m_base_data_address(0), |
| m_options() |
| { |
| if (valobj_sp) |
| Update(); |
| m_options.SetCoerceToId(false) |
| .SetUnwindOnError(true) |
| .SetKeepInMemory(true) |
| .SetUseDynamic(lldb::eDynamicCanRunTarget); |
| } |
| |
| size_t |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::CalculateNumChildren () |
| { |
| return m_count; |
| } |
| |
| lldb::ValueObjectSP |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::GetChildAtIndex (size_t idx) |
| { |
| if (idx >= m_count) |
| return ValueObjectSP(); |
| if (m_base_data_address == 0 || m_count == 0) |
| 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); |
| Target& target(process_sp->GetTarget()); |
| ValueObjectSP retval_sp; |
| if (bit_set) |
| target.EvaluateExpression("(bool)true", NULL, retval_sp); |
| else |
| target.EvaluateExpression("(bool)false", NULL, retval_sp); |
| StreamString name; name.Printf("[%zu]",idx); |
| if (retval_sp) |
| retval_sp->SetName(ConstString(name.GetData())); |
| 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> > = { |
| __first_ = 1 |
| } |
| } |
| }*/ |
| |
| bool |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEnd::Update() |
| { |
| ValueObjectSP valobj_sp = m_backend.GetSP(); |
| if (!valobj_sp) |
| return false; |
| 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; |
| } |
| |
| 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 () |
| {} |
| |
| SyntheticChildrenFrontEnd* |
| lldb_private::formatters::LibcxxVectorBoolSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) |
| { |
| if (!valobj_sp) |
| return NULL; |
| return (new LibcxxVectorBoolSyntheticFrontEnd(valobj_sp)); |
| } |
| |
| /* |
| (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 = { |
| __i_ = { |
| __ptr_ = 0x0000000100103870 { |
| std::__1::__tree_node_base<void *> = { |
| std::__1::__tree_end_node<std::__1::__tree_node_base<void *> *> = { |
| __left_ = 0x0000000000000000 |
| } |
| __right_ = 0x0000000000000000 |
| __parent_ = 0x00000001001038b0 |
| __is_black_ = true |
| } |
| __value_ = { |
| first = 0 |
| second = { std::string } |
| */ |
| |
| lldb_private::formatters::LibCxxMapIteratorSyntheticFrontEnd::LibCxxMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : |
| SyntheticChildrenFrontEnd(*valobj_sp.get()), |
| m_pair_ptr() |
| { |
| 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; |
| |
| if (!valobj_sp) |
| return false; |
| |
| // 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_", |
| NULL, |
| NULL, |
| NULL, |
| ValueObject::GetValueForExpressionPathOptions().DontCheckDotVsArrowSyntax().DontAllowSyntheticChildren(), |
| NULL).get(); |
| |
| return false; |
| } |
| |
| 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(); |
| return m_pair_ptr->GetChildAtIndex(idx, 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; |
| } |
| |
| 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) |
| { |
| if (!valobj_sp) |
| return NULL; |
| return (new LibCxxMapIteratorSyntheticFrontEnd(valobj_sp)); |
| } |
| |
| /* |
| (lldb) fr var ibeg --raw --ptr-depth 1 -T |
| (std::__1::__wrap_iter<int *>) ibeg = { |
| (std::__1::__wrap_iter<int *>::iterator_type) __i = 0x00000001001037a0 { |
| (int) *__i = 1 |
| } |
| } |
| */ |
| |
| SyntheticChildrenFrontEnd* |
| lldb_private::formatters::LibCxxVectorIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) |
| { |
| static ConstString g_item_name; |
| if (!g_item_name) |
| g_item_name.SetCString("__i"); |
| if (!valobj_sp) |
| return NULL; |
| return (new VectorIteratorSyntheticFrontEnd(valobj_sp,g_item_name)); |
| } |
| |
| lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::LibcxxSharedPtrSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : |
| SyntheticChildrenFrontEnd(*valobj_sp.get()), |
| m_cntrl(NULL), |
| 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); |
| } |
| |
| 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) |
| 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 = ValueObject::CreateValueObjectFromData("count", data, valobj_sp->GetExecutionContextRef(), shared_owners_sp->GetClangType()); |
| } |
| 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 = ValueObject::CreateValueObjectFromData("count", data, valobj_sp->GetExecutionContextRef(), shared_weak_owners_sp->GetClangType()); |
| } |
| return m_weak_count_sp; |
| } |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEnd::Update() |
| { |
| m_count_sp.reset(); |
| m_weak_count_sp.reset(); |
| m_cntrl = NULL; |
| |
| 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; |
| } |
| |
| 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 () |
| {} |
| |
| SyntheticChildrenFrontEnd* |
| lldb_private::formatters::LibcxxSharedPtrSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) |
| { |
| if (!valobj_sp) |
| return NULL; |
| return (new LibcxxSharedPtrSyntheticFrontEnd(valobj_sp)); |
| } |
| |
| lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::LibcxxStdVectorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : |
| SyntheticChildrenFrontEnd(*valobj_sp.get()), |
| m_start(NULL), |
| m_finish(NULL), |
| m_element_type(), |
| m_element_size(0), |
| m_children() |
| { |
| if (valobj_sp) |
| Update(); |
| } |
| |
| size_t |
| lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::CalculateNumChildren () |
| { |
| if (!m_start || !m_finish) |
| return 0; |
| uint64_t start_val = m_start->GetValueAsUnsigned(0); |
| uint64_t finish_val = m_finish->GetValueAsUnsigned(0); |
| |
| if (start_val == 0 || finish_val == 0) |
| return 0; |
| |
| if (start_val >= finish_val) |
| return 0; |
| |
| size_t num_children = (finish_val - start_val); |
| if (num_children % m_element_size) |
| return 0; |
| return num_children/m_element_size; |
| } |
| |
| lldb::ValueObjectSP |
| lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::GetChildAtIndex (size_t idx) |
| { |
| if (!m_start || !m_finish) |
| return lldb::ValueObjectSP(); |
| |
| auto cached = m_children.find(idx); |
| if (cached != m_children.end()) |
| return cached->second; |
| |
| uint64_t offset = idx * m_element_size; |
| offset = offset + m_start->GetValueAsUnsigned(0); |
| StreamString name; |
| name.Printf("[%zu]",idx); |
| ValueObjectSP child_sp = ValueObject::CreateValueObjectFromAddress(name.GetData(), offset, m_backend.GetExecutionContextRef(), m_element_type); |
| m_children[idx] = child_sp; |
| return child_sp; |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::Update() |
| { |
| m_start = m_finish = NULL; |
| m_children.clear(); |
| ValueObjectSP data_type_finder_sp(m_backend.GetChildMemberWithName(ConstString("__end_cap_"),true)); |
| if (!data_type_finder_sp) |
| return false; |
| data_type_finder_sp = data_type_finder_sp->GetChildMemberWithName(ConstString("__first_"),true); |
| if (!data_type_finder_sp) |
| return false; |
| m_element_type = data_type_finder_sp->GetClangType().GetPointeeType(); |
| m_element_size = m_element_type.GetByteSize(); |
| |
| if (m_element_size > 0) |
| { |
| // store raw pointers or end up with a circular dependency |
| m_start = m_backend.GetChildMemberWithName(ConstString("__begin_"),true).get(); |
| m_finish = m_backend.GetChildMemberWithName(ConstString("__end_"),true).get(); |
| } |
| return false; |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::MightHaveChildren () |
| { |
| return true; |
| } |
| |
| size_t |
| lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) |
| { |
| if (!m_start || !m_finish) |
| return UINT32_MAX; |
| return ExtractIndexFromString(name.GetCString()); |
| } |
| |
| lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::~LibcxxStdVectorSyntheticFrontEnd () |
| { |
| // these need to stay around because they are child objects who will follow their parent's life cycle |
| // delete m_start; |
| // delete m_finish; |
| } |
| |
| SyntheticChildrenFrontEnd* |
| lldb_private::formatters::LibcxxStdVectorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) |
| { |
| if (!valobj_sp) |
| return NULL; |
| return (new LibcxxStdVectorSyntheticFrontEnd(valobj_sp)); |
| } |
| |
| bool |
| lldb_private::formatters::LibcxxContainerSummaryProvider (ValueObject& valobj, Stream& stream) |
| { |
| if (valobj.IsPointerType()) |
| { |
| uint64_t value = valobj.GetValueAsUnsigned(0); |
| if (!value) |
| return false; |
| stream.Printf("0x%016" PRIx64 " ", value); |
| } |
| return Debugger::FormatPrompt("size=${svar%#}", NULL, NULL, NULL, stream, &valobj); |
| } |