1 //===-- ValueObjectConstResultImpl.cpp ---------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "lldb/Core/ValueObjectConstResultImpl.h" 11 12 #include "lldb/Core/ValueObjectChild.h" 13 #include "lldb/Core/ValueObjectConstResult.h" 14 #include "lldb/Core/ValueObjectConstResultCast.h" 15 #include "lldb/Core/ValueObjectConstResultChild.h" 16 #include "lldb/Core/ValueObjectMemory.h" 17 #include "lldb/Core/DataExtractor.h" 18 #include "lldb/Core/Module.h" 19 #include "lldb/Core/ValueObjectList.h" 20 21 #include "lldb/Symbol/CompilerType.h" 22 #include "lldb/Symbol/ObjectFile.h" 23 #include "lldb/Symbol/SymbolContext.h" 24 #include "lldb/Symbol/Type.h" 25 #include "lldb/Symbol/Variable.h" 26 27 #include "lldb/Target/ExecutionContext.h" 28 #include "lldb/Target/Process.h" 29 #include "lldb/Target/Target.h" 30 31 using namespace lldb; 32 using namespace lldb_private; 33 34 ValueObjectConstResultImpl::ValueObjectConstResultImpl (ValueObject* valobj, 35 lldb::addr_t live_address) : 36 m_impl_backend(valobj), 37 m_live_address(live_address), 38 m_live_address_type(eAddressTypeLoad), 39 m_load_addr_backend(), 40 m_address_of_backend() 41 { 42 } 43 44 lldb::ValueObjectSP 45 ValueObjectConstResultImpl::Dereference (Error &error) 46 { 47 if (m_impl_backend == NULL) 48 return lldb::ValueObjectSP(); 49 50 return m_impl_backend->ValueObject::Dereference(error); 51 } 52 53 ValueObject * 54 ValueObjectConstResultImpl::CreateChildAtIndex (size_t idx, bool synthetic_array_member, int32_t synthetic_index) 55 { 56 if (m_impl_backend == NULL) 57 return NULL; 58 59 m_impl_backend->UpdateValueIfNeeded(false); 60 61 ValueObjectConstResultChild *valobj = NULL; 62 63 bool omit_empty_base_classes = true; 64 bool ignore_array_bounds = synthetic_array_member; 65 std::string child_name_str; 66 uint32_t child_byte_size = 0; 67 int32_t child_byte_offset = 0; 68 uint32_t child_bitfield_bit_size = 0; 69 uint32_t child_bitfield_bit_offset = 0; 70 bool child_is_base_class = false; 71 bool child_is_deref_of_parent = false; 72 73 const bool transparent_pointers = synthetic_array_member == false; 74 CompilerType compiler_type = m_impl_backend->GetCompilerType(); 75 CompilerType child_compiler_type; 76 77 ExecutionContext exe_ctx (m_impl_backend->GetExecutionContextRef()); 78 79 child_compiler_type = compiler_type.GetChildCompilerTypeAtIndex (&exe_ctx, 80 idx, 81 transparent_pointers, 82 omit_empty_base_classes, 83 ignore_array_bounds, 84 child_name_str, 85 child_byte_size, 86 child_byte_offset, 87 child_bitfield_bit_size, 88 child_bitfield_bit_offset, 89 child_is_base_class, 90 child_is_deref_of_parent, 91 m_impl_backend); 92 if (child_compiler_type && child_byte_size) 93 { 94 if (synthetic_index) 95 child_byte_offset += child_byte_size * synthetic_index; 96 97 ConstString child_name; 98 if (!child_name_str.empty()) 99 child_name.SetCString (child_name_str.c_str()); 100 101 valobj = new ValueObjectConstResultChild (*m_impl_backend, 102 child_compiler_type, 103 child_name, 104 child_byte_size, 105 child_byte_offset, 106 child_bitfield_bit_size, 107 child_bitfield_bit_offset, 108 child_is_base_class, 109 child_is_deref_of_parent, 110 m_live_address == LLDB_INVALID_ADDRESS ? m_live_address : m_live_address+child_byte_offset); 111 } 112 113 return valobj; 114 } 115 116 lldb::ValueObjectSP 117 ValueObjectConstResultImpl::GetSyntheticChildAtOffset (uint32_t offset, const CompilerType& type, bool can_create) 118 { 119 if (m_impl_backend == NULL) 120 return lldb::ValueObjectSP(); 121 122 return m_impl_backend->ValueObject::GetSyntheticChildAtOffset(offset, type, can_create); 123 } 124 125 lldb::ValueObjectSP 126 ValueObjectConstResultImpl::AddressOf (Error &error) 127 { 128 if (m_address_of_backend.get() != NULL) 129 return m_address_of_backend; 130 131 if (m_impl_backend == NULL) 132 return lldb::ValueObjectSP(); 133 if (m_live_address != LLDB_INVALID_ADDRESS) 134 { 135 CompilerType compiler_type(m_impl_backend->GetCompilerType()); 136 137 lldb::DataBufferSP buffer(new lldb_private::DataBufferHeap(&m_live_address,sizeof(lldb::addr_t))); 138 139 std::string new_name("&"); 140 new_name.append(m_impl_backend->GetName().AsCString("")); 141 ExecutionContext exe_ctx (m_impl_backend->GetExecutionContextRef()); 142 m_address_of_backend = ValueObjectConstResult::Create (exe_ctx.GetBestExecutionContextScope(), 143 compiler_type.GetPointerType(), 144 ConstString(new_name.c_str()), 145 buffer, 146 lldb::endian::InlHostByteOrder(), 147 exe_ctx.GetAddressByteSize()); 148 149 m_address_of_backend->GetValue().SetValueType(Value::eValueTypeScalar); 150 m_address_of_backend->GetValue().GetScalar() = m_live_address; 151 152 return m_address_of_backend; 153 } 154 else 155 return m_impl_backend->ValueObject::AddressOf(error); 156 } 157 158 lldb::ValueObjectSP 159 ValueObjectConstResultImpl::Cast (const CompilerType &compiler_type) 160 { 161 if (m_impl_backend == NULL) 162 return lldb::ValueObjectSP(); 163 164 ValueObjectConstResultCast *result_cast = new ValueObjectConstResultCast( 165 *m_impl_backend, m_impl_backend->GetName(), compiler_type, m_live_address); 166 return result_cast->GetSP(); 167 } 168 169 lldb::addr_t 170 ValueObjectConstResultImpl::GetAddressOf (bool scalar_is_load_address, 171 AddressType *address_type) 172 { 173 174 if (m_impl_backend == NULL) 175 return 0; 176 177 if (m_live_address == LLDB_INVALID_ADDRESS) 178 { 179 return m_impl_backend->ValueObject::GetAddressOf (scalar_is_load_address, 180 address_type); 181 } 182 183 if (address_type) 184 *address_type = m_live_address_type; 185 186 return m_live_address; 187 } 188 189 size_t 190 ValueObjectConstResultImpl::GetPointeeData (DataExtractor& data, 191 uint32_t item_idx, 192 uint32_t item_count) 193 { 194 if (m_impl_backend == NULL) 195 return 0; 196 return m_impl_backend->ValueObject::GetPointeeData(data, item_idx, item_count); 197 } 198