1 //===-- LibStdcpp.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/lldb-python.h" 11 12 #include "lldb/DataFormatters/CXXFormatterFunctions.h" 13 14 #include "lldb/Core/DataBufferHeap.h" 15 #include "lldb/Core/Error.h" 16 #include "lldb/Core/Stream.h" 17 #include "lldb/Core/ValueObject.h" 18 #include "lldb/Core/ValueObjectConstResult.h" 19 #include "lldb/Host/Endian.h" 20 #include "lldb/Symbol/ClangASTContext.h" 21 #include "lldb/Target/ObjCLanguageRuntime.h" 22 #include "lldb/Target/Target.h" 23 24 using namespace lldb; 25 using namespace lldb_private; 26 using namespace lldb_private::formatters; 27 28 lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::LibstdcppVectorBoolSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : 29 SyntheticChildrenFrontEnd(*valobj_sp.get()), 30 m_exe_ctx_ref(), 31 m_count(0), 32 m_base_data_address(0), 33 m_options() 34 { 35 if (valobj_sp) 36 Update(); 37 m_options.SetCoerceToId(false) 38 .SetUnwindOnError(true) 39 .SetKeepInMemory(true) 40 .SetUseDynamic(lldb::eDynamicCanRunTarget); 41 } 42 43 size_t 44 lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::CalculateNumChildren () 45 { 46 return m_count; 47 } 48 49 lldb::ValueObjectSP 50 lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::GetChildAtIndex (size_t idx) 51 { 52 if (idx >= m_count) 53 return ValueObjectSP(); 54 if (m_base_data_address == 0 || m_count == 0) 55 return ValueObjectSP(); 56 size_t byte_idx = (idx >> 3); // divide by 8 to get byte index 57 size_t bit_index = (idx & 7); // efficient idx % 8 for bit index 58 lldb::addr_t byte_location = m_base_data_address + byte_idx; 59 ProcessSP process_sp(m_exe_ctx_ref.GetProcessSP()); 60 if (!process_sp) 61 return ValueObjectSP(); 62 uint8_t byte = 0; 63 uint8_t mask = 0; 64 Error err; 65 size_t bytes_read = process_sp->ReadMemory(byte_location, &byte, 1, err); 66 if (err.Fail() || bytes_read == 0) 67 return ValueObjectSP(); 68 switch (bit_index) 69 { 70 case 0: 71 mask = 1; break; 72 case 1: 73 mask = 2; break; 74 case 2: 75 mask = 4; break; 76 case 3: 77 mask = 8; break; 78 case 4: 79 mask = 16; break; 80 case 5: 81 mask = 32; break; 82 case 6: 83 mask = 64; break; 84 case 7: 85 mask = 128; break; 86 default: 87 return ValueObjectSP(); 88 } 89 bool bit_set = ((byte & mask) != 0); 90 Target& target(process_sp->GetTarget()); 91 ValueObjectSP retval_sp; 92 if (bit_set) 93 target.EvaluateExpression("(bool)true", NULL, retval_sp); 94 else 95 target.EvaluateExpression("(bool)false", NULL, retval_sp); 96 StreamString name; name.Printf("[%zu]",idx); 97 if (retval_sp) 98 retval_sp->SetName(ConstString(name.GetData())); 99 return retval_sp; 100 } 101 102 /*((std::vector<std::allocator<bool> >) vBool = { 103 (std::_Bvector_base<std::allocator<bool> >) std::_Bvector_base<std::allocator<bool> > = { 104 (std::_Bvector_base<std::allocator<bool> >::_Bvector_impl) _M_impl = { 105 (std::_Bit_iterator) _M_start = { 106 (std::_Bit_iterator_base) std::_Bit_iterator_base = { 107 (_Bit_type *) _M_p = 0x0016b160 108 (unsigned int) _M_offset = 0 109 } 110 } 111 (std::_Bit_iterator) _M_finish = { 112 (std::_Bit_iterator_base) std::_Bit_iterator_base = { 113 (_Bit_type *) _M_p = 0x0016b16c 114 (unsigned int) _M_offset = 16 115 } 116 } 117 (_Bit_type *) _M_end_of_storage = 0x0016b170 118 } 119 } 120 } 121 */ 122 123 bool 124 lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::Update() 125 { 126 ValueObjectSP valobj_sp = m_backend.GetSP(); 127 if (!valobj_sp) 128 return false; 129 if (!valobj_sp) 130 return false; 131 m_exe_ctx_ref = valobj_sp->GetExecutionContextRef(); 132 133 ValueObjectSP m_impl_sp(valobj_sp->GetChildMemberWithName(ConstString("_M_impl"), true)); 134 if (!m_impl_sp) 135 return false; 136 137 ValueObjectSP m_start_sp(m_impl_sp->GetChildMemberWithName(ConstString("_M_start"), true)); 138 ValueObjectSP m_finish_sp(m_impl_sp->GetChildMemberWithName(ConstString("_M_finish"), true)); 139 140 ValueObjectSP start_p_sp, finish_p_sp, finish_offset_sp; 141 142 if (!m_start_sp || !m_finish_sp) 143 return false; 144 145 start_p_sp = m_start_sp->GetChildMemberWithName(ConstString("_M_p"), true); 146 finish_p_sp = m_finish_sp->GetChildMemberWithName(ConstString("_M_p"), true); 147 finish_offset_sp = m_finish_sp->GetChildMemberWithName(ConstString("_M_offset"), true); 148 149 if (!start_p_sp || !finish_offset_sp || !finish_p_sp) 150 return false; 151 152 m_base_data_address = start_p_sp->GetValueAsUnsigned(0); 153 if (!m_base_data_address) 154 return false; 155 156 lldb::addr_t end_data_address(finish_p_sp->GetValueAsUnsigned(0)); 157 if (!end_data_address) 158 return false; 159 160 if (end_data_address < m_base_data_address) 161 return false; 162 else 163 m_count = finish_offset_sp->GetValueAsUnsigned(0) + (end_data_address-m_base_data_address)*8; 164 165 return true; 166 } 167 168 bool 169 lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::MightHaveChildren () 170 { 171 return true; 172 } 173 174 size_t 175 lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) 176 { 177 if (!m_count || !m_base_data_address) 178 return UINT32_MAX; 179 const char* item_name = name.GetCString(); 180 uint32_t idx = ExtractIndexFromString(item_name); 181 if (idx < UINT32_MAX && idx >= CalculateNumChildren()) 182 return UINT32_MAX; 183 return idx; 184 } 185 186 lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEnd::~LibstdcppVectorBoolSyntheticFrontEnd () 187 {} 188 189 SyntheticChildrenFrontEnd* 190 lldb_private::formatters::LibstdcppVectorBoolSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) 191 { 192 if (!valobj_sp) 193 return NULL; 194 return (new LibstdcppVectorBoolSyntheticFrontEnd(valobj_sp)); 195 } 196 197 /* 198 (std::_Rb_tree_iterator<std::pair<const int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >) ibeg = { 199 (_Base_ptr) _M_node = 0x0000000100103910 { 200 (std::_Rb_tree_color) _M_color = _S_black 201 (std::_Rb_tree_node_base::_Base_ptr) _M_parent = 0x00000001001038c0 202 (std::_Rb_tree_node_base::_Base_ptr) _M_left = 0x0000000000000000 203 (std::_Rb_tree_node_base::_Base_ptr) _M_right = 0x0000000000000000 204 } 205 } 206 */ 207 208 lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::LibstdcppMapIteratorSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) : 209 SyntheticChildrenFrontEnd(*valobj_sp.get()), 210 m_exe_ctx_ref(), 211 m_pair_address(0), 212 m_pair_type(), 213 m_options(), 214 m_pair_sp() 215 { 216 if (valobj_sp) 217 Update(); 218 m_options.SetCoerceToId(false) 219 .SetUnwindOnError(true) 220 .SetKeepInMemory(true) 221 .SetUseDynamic(lldb::eDynamicCanRunTarget); 222 } 223 224 bool 225 lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::Update() 226 { 227 ValueObjectSP valobj_sp = m_backend.GetSP(); 228 if (!valobj_sp) 229 return false; 230 231 TargetSP target_sp(valobj_sp->GetTargetSP()); 232 233 if (!target_sp) 234 return false; 235 236 bool is_64bit = (target_sp->GetArchitecture().GetAddressByteSize() == 8); 237 238 if (!valobj_sp) 239 return false; 240 m_exe_ctx_ref = valobj_sp->GetExecutionContextRef(); 241 242 ValueObjectSP _M_node_sp(valobj_sp->GetChildMemberWithName(ConstString("_M_node"), true)); 243 if (!_M_node_sp) 244 return false; 245 246 m_pair_address = _M_node_sp->GetValueAsUnsigned(0); 247 if (m_pair_address == 0) 248 return false; 249 250 m_pair_address += (is_64bit ? 32 : 16); 251 252 ClangASTType my_type(valobj_sp->GetClangType()); 253 if (my_type.GetNumTemplateArguments() >= 1) 254 { 255 TemplateArgumentKind kind; 256 ClangASTType pair_type = my_type.GetTemplateArgument(0, kind); 257 if (kind != eTemplateArgumentKindType && kind != eTemplateArgumentKindTemplate && kind != eTemplateArgumentKindTemplateExpansion) 258 return false; 259 m_pair_type = pair_type; 260 } 261 else 262 return false; 263 264 return true; 265 } 266 267 size_t 268 lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::CalculateNumChildren () 269 { 270 return 2; 271 } 272 273 lldb::ValueObjectSP 274 lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::GetChildAtIndex (size_t idx) 275 { 276 if (m_pair_address != 0 && m_pair_type) 277 { 278 if (!m_pair_sp) 279 m_pair_sp = ValueObject::CreateValueObjectFromAddress("pair", m_pair_address, m_exe_ctx_ref, m_pair_type); 280 if (m_pair_sp) 281 return m_pair_sp->GetChildAtIndex(idx, true); 282 } 283 return lldb::ValueObjectSP(); 284 } 285 286 bool 287 lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::MightHaveChildren () 288 { 289 return true; 290 } 291 292 size_t 293 lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name) 294 { 295 if (name == ConstString("first")) 296 return 0; 297 if (name == ConstString("second")) 298 return 1; 299 return UINT32_MAX; 300 } 301 302 lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEnd::~LibstdcppMapIteratorSyntheticFrontEnd () 303 {} 304 305 SyntheticChildrenFrontEnd* 306 lldb_private::formatters::LibstdcppMapIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) 307 { 308 if (!valobj_sp) 309 return NULL; 310 return (new LibstdcppMapIteratorSyntheticFrontEnd(valobj_sp)); 311 } 312 313 /* 314 (lldb) fr var ibeg --ptr-depth 1 315 (__gnu_cxx::__normal_iterator<int *, std::vector<int, std::allocator<int> > >) ibeg = { 316 _M_current = 0x00000001001037a0 { 317 *_M_current = 1 318 } 319 } 320 */ 321 322 SyntheticChildrenFrontEnd* 323 lldb_private::formatters::LibStdcppVectorIteratorSyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp) 324 { 325 static ConstString g_item_name; 326 if (!g_item_name) 327 g_item_name.SetCString("_M_current"); 328 if (!valobj_sp) 329 return NULL; 330 return (new VectorIteratorSyntheticFrontEnd(valobj_sp,g_item_name)); 331 } 332
