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Diffstat (limited to 'source/DataFormatters/LibStdcpp.cpp')
| -rw-r--r-- | source/DataFormatters/LibStdcpp.cpp | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/source/DataFormatters/LibStdcpp.cpp b/source/DataFormatters/LibStdcpp.cpp new file mode 100644 index 0000000..e0f23cc --- /dev/null +++ b/source/DataFormatters/LibStdcpp.cpp @@ -0,0 +1,331 @@ +//===-- LibStdcpp.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/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::LibstdcppVectorBoolSyntheticFrontEnd::LibstdcppVectorBoolSyntheticFrontEnd (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::LibstdcppVectorBoolSyntheticFrontEnd::CalculateNumChildren () +{ + return m_count; +} + +lldb::ValueObjectSP +lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::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::vector<std::allocator<bool> >) vBool = { + (std::_Bvector_base<std::allocator<bool> >) std::_Bvector_base<std::allocator<bool> > = { + (std::_Bvector_base<std::allocator<bool> >::_Bvector_impl) _M_impl = { + (std::_Bit_iterator) _M_start = { + (std::_Bit_iterator_base) std::_Bit_iterator_base = { + (_Bit_type *) _M_p = 0x0016b160 + (unsigned int) _M_offset = 0 + } + } + (std::_Bit_iterator) _M_finish = { + (std::_Bit_iterator_base) std::_Bit_iterator_base = { + (_Bit_type *) _M_p = 0x0016b16c + (unsigned int) _M_offset = 16 + } + } + (_Bit_type *) _M_end_of_storage = 0x0016b170 + } + } + } + */ + +bool +lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::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 m_impl_sp(valobj_sp->GetChildMemberWithName(ConstString("_M_impl"), true)); + if (!m_impl_sp) + return false; + + ValueObjectSP m_start_sp(m_impl_sp->GetChildMemberWithName(ConstString("_M_start"), true)); + ValueObjectSP m_finish_sp(m_impl_sp->GetChildMemberWithName(ConstString("_M_finish"), true)); + + ValueObjectSP start_p_sp, finish_p_sp, finish_offset_sp; + + if (!m_start_sp || !m_finish_sp) + return false; + + start_p_sp = m_start_sp->GetChildMemberWithName(ConstString("_M_p"), true); + finish_p_sp = m_finish_sp->GetChildMemberWithName(ConstString("_M_p"), true); + finish_offset_sp = m_finish_sp->GetChildMemberWithName(ConstString("_M_offset"), true); + + if (!start_p_sp || !finish_offset_sp || !finish_p_sp) + return false; + + m_base_data_address = start_p_sp->GetValueAsUnsigned(0); + if (!m_base_data_address) + return false; + + lldb::addr_t end_data_address(finish_p_sp->GetValueAsUnsigned(0)); + if (!end_data_address) + return false; + + if (end_data_address < m_base_data_address) + return false; + else + m_count = finish_offset_sp->GetValueAsUnsigned(0) + (end_data_address-m_base_data_address)*8; + + return true; +} + +bool +lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::MightHaveChildren () +{ + return true; +} + +size_t +lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::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::LibstdcppVectorBoolSyntheticFrontEnd::~LibstdcppVectorBoolSyntheticFrontEnd () +{} + +SyntheticChildrenFrontEnd* +lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) +{ + if (!valobj_sp) + return NULL; + return (new LibstdcppVectorBoolSyntheticFrontEnd(valobj_sp)); +} + +/* + (std::_Rb_tree_iterator<std::pair<const int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >) ibeg = { + (_Base_ptr) _M_node = 0x0000000100103910 { + (std::_Rb_tree_color) _M_color = _S_black + (std::_Rb_tree_node_base::_Base_ptr) _M_parent = 0x00000001001038c0 + (std::_Rb_tree_node_base::_Base_ptr) _M_left = 0x0000000000000000 + (std::_Rb_tree_node_base::_Base_ptr) _M_right = 0x0000000000000000 + } + } + */ + +lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::LibstdcppMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : + SyntheticChildrenFrontEnd(*valobj_sp.get()), + m_exe_ctx_ref(), + m_pair_address(0), + m_pair_type(), + m_options(), + m_pair_sp() +{ + if (valobj_sp) + Update(); + m_options.SetCoerceToId(false) + .SetUnwindOnError(true) + .SetKeepInMemory(true) + .SetUseDynamic(lldb::eDynamicCanRunTarget); +} + +bool +lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::Update() +{ + ValueObjectSP valobj_sp = m_backend.GetSP(); + if (!valobj_sp) + return false; + + TargetSP target_sp(valobj_sp->GetTargetSP()); + + if (!target_sp) + return false; + + bool is_64bit = (target_sp->GetArchitecture().GetAddressByteSize() == 8); + + if (!valobj_sp) + return false; + m_exe_ctx_ref = valobj_sp->GetExecutionContextRef(); + + ValueObjectSP _M_node_sp(valobj_sp->GetChildMemberWithName(ConstString("_M_node"), true)); + if (!_M_node_sp) + return false; + + m_pair_address = _M_node_sp->GetValueAsUnsigned(0); + if (m_pair_address == 0) + return false; + + m_pair_address += (is_64bit ? 32 : 16); + + ClangASTType my_type(valobj_sp->GetClangType()); + if (my_type.GetNumTemplateArguments() >= 1) + { + TemplateArgumentKind kind; + ClangASTType pair_type = my_type.GetTemplateArgument(0, kind); + if (kind != eTemplateArgumentKindType && kind != eTemplateArgumentKindTemplate && kind != eTemplateArgumentKindTemplateExpansion) + return false; + m_pair_type = pair_type; + } + else + return false; + + return true; +} + +size_t +lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::CalculateNumChildren () +{ + return 2; +} + +lldb::ValueObjectSP +lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::GetChildAtIndex (size_t idx) +{ + if (m_pair_address != 0 && m_pair_type) + { + if (!m_pair_sp) + m_pair_sp = ValueObject::CreateValueObjectFromAddress("pair", m_pair_address, m_exe_ctx_ref, m_pair_type); + if (m_pair_sp) + return m_pair_sp->GetChildAtIndex(idx, true); + } + return lldb::ValueObjectSP(); +} + +bool +lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::MightHaveChildren () +{ + return true; +} + +size_t +lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) +{ + if (name == ConstString("first")) + return 0; + if (name == ConstString("second")) + return 1; + return UINT32_MAX; +} + +lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::~LibstdcppMapIteratorSyntheticFrontEnd () +{} + +SyntheticChildrenFrontEnd* +lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) +{ + if (!valobj_sp) + return NULL; + return (new LibstdcppMapIteratorSyntheticFrontEnd(valobj_sp)); +} + +/* + (lldb) fr var ibeg --ptr-depth 1 + (__gnu_cxx::__normal_iterator<int *, std::vector<int, std::allocator<int> > >) ibeg = { + _M_current = 0x00000001001037a0 { + *_M_current = 1 + } + } + */ + +SyntheticChildrenFrontEnd* +lldb_private::formatters::LibStdcppVectorIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) +{ + static ConstString g_item_name; + if (!g_item_name) + g_item_name.SetCString("_M_current"); + if (!valobj_sp) + return NULL; + return (new VectorIteratorSyntheticFrontEnd(valobj_sp,g_item_name)); +} |
