Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1 | //===-- Value.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/Value.h" |
| 11 | |
| 12 | // C Includes |
| 13 | // C++ Includes |
| 14 | // Other libraries and framework includes |
| 15 | // Project includes |
| 16 | #include "lldb/Core/DataExtractor.h" |
| 17 | #include "lldb/Core/DataBufferHeap.h" |
| 18 | #include "lldb/Core/Module.h" |
Johnny Chen | 3c49d4c | 2012-02-02 22:11:13 +0000 | [diff] [blame] | 19 | #include "lldb/Core/State.h" |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 20 | #include "lldb/Core/Stream.h" |
Greg Clayton | 1674b12 | 2010-07-21 22:12:05 +0000 | [diff] [blame] | 21 | #include "lldb/Symbol/ClangASTType.h" |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 22 | #include "lldb/Symbol/ClangASTContext.h" |
| 23 | #include "lldb/Symbol/ObjectFile.h" |
| 24 | #include "lldb/Symbol/SymbolContext.h" |
| 25 | #include "lldb/Symbol/Type.h" |
| 26 | #include "lldb/Symbol/Variable.h" |
| 27 | #include "lldb/Target/ExecutionContext.h" |
| 28 | #include "lldb/Target/Process.h" |
Greg Clayton | 395fc33 | 2011-02-15 21:59:32 +0000 | [diff] [blame] | 29 | #include "lldb/Target/Target.h" |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 30 | |
| 31 | using namespace lldb; |
| 32 | using namespace lldb_private; |
| 33 | |
| 34 | Value::Value() : |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 35 | m_value (), |
| 36 | m_value_type (eValueTypeScalar), |
| 37 | m_context (NULL), |
| 38 | m_context_type (eContextTypeInvalid), |
| 39 | m_data_buffer () |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 40 | { |
| 41 | } |
| 42 | |
| 43 | Value::Value(const Scalar& scalar) : |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 44 | m_value (scalar), |
| 45 | m_value_type (eValueTypeScalar), |
| 46 | m_context (NULL), |
| 47 | m_context_type (eContextTypeInvalid), |
| 48 | m_data_buffer () |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 49 | { |
| 50 | } |
| 51 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 52 | |
| 53 | Value::Value(const uint8_t *bytes, int len) : |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 54 | m_value (), |
| 55 | m_value_type (eValueTypeHostAddress), |
| 56 | m_context (NULL), |
| 57 | m_context_type (eContextTypeInvalid), |
| 58 | m_data_buffer () |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 59 | { |
| 60 | m_data_buffer.CopyData(bytes, len); |
| 61 | m_value = (uintptr_t)m_data_buffer.GetBytes(); |
| 62 | } |
| 63 | |
| 64 | Value::Value(const Value &v) : |
| 65 | m_value(v.m_value), |
| 66 | m_value_type(v.m_value_type), |
| 67 | m_context(v.m_context), |
| 68 | m_context_type(v.m_context_type) |
| 69 | { |
| 70 | if ((uintptr_t)v.m_value.ULongLong(LLDB_INVALID_ADDRESS) == (uintptr_t)v.m_data_buffer.GetBytes()) |
| 71 | { |
| 72 | m_data_buffer.CopyData(v.m_data_buffer.GetBytes(), |
| 73 | v.m_data_buffer.GetByteSize()); |
| 74 | |
| 75 | m_value = (uintptr_t)m_data_buffer.GetBytes(); |
| 76 | } |
| 77 | } |
| 78 | |
Greg Clayton | bdcb6ab | 2011-01-25 23:55:37 +0000 | [diff] [blame] | 79 | Value & |
| 80 | Value::operator=(const Value &rhs) |
| 81 | { |
| 82 | if (this != &rhs) |
| 83 | { |
| 84 | m_value = rhs.m_value; |
| 85 | m_value_type = rhs.m_value_type; |
| 86 | m_context = rhs.m_context; |
| 87 | m_context_type = rhs.m_context_type; |
| 88 | if ((uintptr_t)rhs.m_value.ULongLong(LLDB_INVALID_ADDRESS) == (uintptr_t)rhs.m_data_buffer.GetBytes()) |
| 89 | { |
| 90 | m_data_buffer.CopyData(rhs.m_data_buffer.GetBytes(), |
| 91 | rhs.m_data_buffer.GetByteSize()); |
| 92 | |
| 93 | m_value = (uintptr_t)m_data_buffer.GetBytes(); |
| 94 | } |
| 95 | } |
| 96 | return *this; |
| 97 | } |
| 98 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 99 | void |
| 100 | Value::Dump (Stream* strm) |
| 101 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 102 | m_value.GetValue (strm, true); |
| 103 | strm->Printf(", value_type = %s, context = %p, context_type = %s", |
| 104 | Value::GetValueTypeAsCString(m_value_type), |
| 105 | m_context, |
| 106 | Value::GetContextTypeAsCString(m_context_type)); |
| 107 | } |
| 108 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 109 | Value::ValueType |
| 110 | Value::GetValueType() const |
| 111 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 112 | return m_value_type; |
| 113 | } |
| 114 | |
Greg Clayton | b344843 | 2011-03-24 21:19:54 +0000 | [diff] [blame] | 115 | AddressType |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 116 | Value::GetValueAddressType () const |
| 117 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 118 | switch (m_value_type) |
| 119 | { |
| 120 | default: |
| 121 | case eValueTypeScalar: |
| 122 | break; |
| 123 | case eValueTypeLoadAddress: return eAddressTypeLoad; |
| 124 | case eValueTypeFileAddress: return eAddressTypeFile; |
| 125 | case eValueTypeHostAddress: return eAddressTypeHost; |
| 126 | } |
| 127 | return eAddressTypeInvalid; |
| 128 | } |
| 129 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 130 | RegisterInfo * |
| 131 | Value::GetRegisterInfo() |
| 132 | { |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 133 | if (m_context_type == eContextTypeRegisterInfo) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 134 | return static_cast<RegisterInfo *> (m_context); |
| 135 | return NULL; |
| 136 | } |
| 137 | |
| 138 | Type * |
| 139 | Value::GetType() |
| 140 | { |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 141 | if (m_context_type == eContextTypeLLDBType) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 142 | return static_cast<Type *> (m_context); |
| 143 | return NULL; |
| 144 | } |
| 145 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 146 | void |
| 147 | Value::ResizeData(int len) |
| 148 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 149 | m_value_type = eValueTypeHostAddress; |
| 150 | m_data_buffer.SetByteSize(len); |
| 151 | m_value = (uintptr_t)m_data_buffer.GetBytes(); |
| 152 | } |
| 153 | |
| 154 | bool |
| 155 | Value::ValueOf(ExecutionContext *exe_ctx, clang::ASTContext *ast_context) |
| 156 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 157 | switch (m_context_type) |
| 158 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 159 | case eContextTypeInvalid: |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 160 | case eContextTypeClangType: // clang::Type * |
| 161 | case eContextTypeRegisterInfo: // RegisterInfo * |
| 162 | case eContextTypeLLDBType: // Type * |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 163 | break; |
| 164 | |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 165 | case eContextTypeVariable: // Variable * |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 166 | ResolveValue(exe_ctx, ast_context); |
| 167 | return true; |
| 168 | } |
| 169 | return false; |
| 170 | } |
| 171 | |
| 172 | size_t |
| 173 | Value::GetValueByteSize (clang::ASTContext *ast_context, Error *error_ptr) |
| 174 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 175 | size_t byte_size = 0; |
| 176 | |
| 177 | switch (m_context_type) |
| 178 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 179 | case eContextTypeInvalid: |
| 180 | // If we have no context, there is no way to know how much memory to read |
| 181 | if (error_ptr) |
| 182 | error_ptr->SetErrorString ("Invalid context type, there is no way to know how much memory to read."); |
| 183 | break; |
| 184 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 185 | case eContextTypeClangType: |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 186 | if (ast_context == NULL) |
| 187 | { |
| 188 | if (error_ptr) |
| 189 | error_ptr->SetErrorString ("Can't determine size of opaque clang type with NULL ASTContext *."); |
| 190 | } |
| 191 | else |
| 192 | { |
Greg Clayton | 960d6a4 | 2010-08-03 00:35:52 +0000 | [diff] [blame] | 193 | uint64_t bit_width = ClangASTType::GetClangTypeBitWidth (ast_context, m_context); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 194 | byte_size = (bit_width + 7 ) / 8; |
| 195 | } |
| 196 | break; |
| 197 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 198 | case eContextTypeRegisterInfo: // RegisterInfo * |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 199 | if (GetRegisterInfo()) |
| 200 | byte_size = GetRegisterInfo()->byte_size; |
| 201 | else if (error_ptr) |
Greg Clayton | b912457 | 2012-12-06 02:33:54 +0000 | [diff] [blame] | 202 | error_ptr->SetErrorString ("Can't determine byte size with NULL RegisterInfo *."); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 203 | break; |
| 204 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 205 | case eContextTypeLLDBType: // Type * |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 206 | if (GetType()) |
| 207 | byte_size = GetType()->GetByteSize(); |
| 208 | else if (error_ptr) |
| 209 | error_ptr->SetErrorString ("Can't determine byte size with NULL Type *."); |
| 210 | break; |
| 211 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 212 | case eContextTypeVariable: // Variable * |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 213 | if (GetVariable()) |
Jim Ingham | b399653 | 2011-12-22 17:03:37 +0000 | [diff] [blame] | 214 | { |
| 215 | if (GetVariable()->GetType()) |
| 216 | byte_size = GetVariable()->GetType()->GetByteSize(); |
| 217 | else if (error_ptr) |
| 218 | error_ptr->SetErrorString ("Can't determine byte size with NULL Type *."); |
| 219 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 220 | else if (error_ptr) |
| 221 | error_ptr->SetErrorString ("Can't determine byte size with NULL Variable *."); |
| 222 | break; |
| 223 | } |
| 224 | |
| 225 | if (error_ptr) |
| 226 | { |
| 227 | if (byte_size == 0) |
| 228 | { |
| 229 | if (error_ptr->Success()) |
| 230 | error_ptr->SetErrorString("Unable to determine byte size."); |
| 231 | } |
| 232 | else |
| 233 | { |
| 234 | error_ptr->Clear(); |
| 235 | } |
| 236 | } |
| 237 | return byte_size; |
| 238 | } |
| 239 | |
Greg Clayton | 04c9c7b | 2011-02-16 23:00:21 +0000 | [diff] [blame] | 240 | clang_type_t |
Greg Clayton | 462d414 | 2010-09-29 01:12:09 +0000 | [diff] [blame] | 241 | Value::GetClangType () |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 242 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 243 | switch (m_context_type) |
| 244 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 245 | case eContextTypeInvalid: |
| 246 | break; |
| 247 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 248 | case eContextTypeClangType: |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 249 | return m_context; |
| 250 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 251 | case eContextTypeRegisterInfo: |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 252 | break; // TODO: Eventually convert into a clang type? |
| 253 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 254 | case eContextTypeLLDBType: |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 255 | if (GetType()) |
Greg Clayton | 04c9c7b | 2011-02-16 23:00:21 +0000 | [diff] [blame] | 256 | return GetType()->GetClangForwardType(); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 257 | break; |
| 258 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 259 | case eContextTypeVariable: |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 260 | if (GetVariable()) |
Greg Clayton | 04c9c7b | 2011-02-16 23:00:21 +0000 | [diff] [blame] | 261 | return GetVariable()->GetType()->GetClangForwardType(); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 262 | break; |
| 263 | } |
| 264 | |
| 265 | return NULL; |
| 266 | } |
| 267 | |
| 268 | lldb::Format |
| 269 | Value::GetValueDefaultFormat () |
| 270 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 271 | switch (m_context_type) |
| 272 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 273 | case eContextTypeInvalid: |
| 274 | break; |
| 275 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 276 | case eContextTypeClangType: |
Greg Clayton | 1674b12 | 2010-07-21 22:12:05 +0000 | [diff] [blame] | 277 | return ClangASTType::GetFormat (m_context); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 278 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 279 | case eContextTypeRegisterInfo: |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 280 | if (GetRegisterInfo()) |
| 281 | return GetRegisterInfo()->format; |
| 282 | break; |
| 283 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 284 | case eContextTypeLLDBType: |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 285 | if (GetType()) |
| 286 | return GetType()->GetFormat(); |
| 287 | break; |
| 288 | |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 289 | case eContextTypeVariable: |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 290 | if (GetVariable()) |
| 291 | return GetVariable()->GetType()->GetFormat(); |
| 292 | break; |
| 293 | |
| 294 | } |
| 295 | |
| 296 | // Return a good default in case we can't figure anything out |
| 297 | return eFormatHex; |
| 298 | } |
| 299 | |
Greg Clayton | 427f290 | 2010-12-14 02:59:59 +0000 | [diff] [blame] | 300 | bool |
| 301 | Value::GetData (DataExtractor &data) |
| 302 | { |
| 303 | switch (m_value_type) |
| 304 | { |
| 305 | default: |
| 306 | break; |
| 307 | |
| 308 | case eValueTypeScalar: |
| 309 | if (m_value.GetData (data)) |
| 310 | return true; |
| 311 | break; |
| 312 | |
| 313 | case eValueTypeLoadAddress: |
| 314 | case eValueTypeFileAddress: |
| 315 | case eValueTypeHostAddress: |
| 316 | if (m_data_buffer.GetByteSize()) |
| 317 | { |
| 318 | data.SetData(m_data_buffer.GetBytes(), m_data_buffer.GetByteSize(), data.GetByteOrder()); |
| 319 | return true; |
| 320 | } |
| 321 | break; |
| 322 | } |
| 323 | |
| 324 | return false; |
| 325 | |
| 326 | } |
| 327 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 328 | Error |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 329 | Value::GetValueAsData (ExecutionContext *exe_ctx, |
| 330 | clang::ASTContext *ast_context, |
| 331 | DataExtractor &data, |
| 332 | uint32_t data_offset, |
| 333 | Module *module) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 334 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 335 | data.Clear(); |
| 336 | |
| 337 | Error error; |
| 338 | lldb::addr_t address = LLDB_INVALID_ADDRESS; |
Greg Clayton | b344843 | 2011-03-24 21:19:54 +0000 | [diff] [blame] | 339 | AddressType address_type = eAddressTypeFile; |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 340 | Address file_so_addr; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 341 | switch (m_value_type) |
| 342 | { |
| 343 | default: |
Greg Clayton | a564ec6 | 2010-11-02 01:50:16 +0000 | [diff] [blame] | 344 | error.SetErrorStringWithFormat("invalid value type %i", m_value_type); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 345 | break; |
| 346 | |
| 347 | case eValueTypeScalar: |
Greg Clayton | cd54803 | 2011-02-01 01:31:41 +0000 | [diff] [blame] | 348 | data.SetByteOrder (lldb::endian::InlHostByteOrder()); |
Jim Ingham | b14b00c | 2011-02-24 21:23:14 +0000 | [diff] [blame] | 349 | if (m_context_type == eContextTypeClangType && ast_context) |
| 350 | { |
| 351 | uint32_t ptr_bit_width = ClangASTType::GetClangTypeBitWidth (ast_context, |
| 352 | ClangASTContext::GetVoidPtrType(ast_context, false)); |
| 353 | uint32_t ptr_byte_size = (ptr_bit_width + 7) / 8; |
| 354 | data.SetAddressByteSize (ptr_byte_size); |
| 355 | } |
| 356 | else |
| 357 | data.SetAddressByteSize(sizeof(void *)); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 358 | if (m_value.GetData (data)) |
| 359 | return error; // Success; |
Greg Clayton | a564ec6 | 2010-11-02 01:50:16 +0000 | [diff] [blame] | 360 | error.SetErrorStringWithFormat("extracting data from value failed"); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 361 | break; |
| 362 | |
| 363 | case eValueTypeLoadAddress: |
| 364 | if (exe_ctx == NULL) |
| 365 | { |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 366 | error.SetErrorString ("can't read load address (no execution context)"); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 367 | } |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 368 | else |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 369 | { |
Greg Clayton | 567e7f3 | 2011-09-22 04:58:26 +0000 | [diff] [blame] | 370 | Process *process = exe_ctx->GetProcessPtr(); |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 371 | if (process == NULL) |
| 372 | { |
| 373 | error.SetErrorString ("can't read load address (invalid process)"); |
| 374 | } |
| 375 | else |
| 376 | { |
| 377 | address = m_value.ULongLong(LLDB_INVALID_ADDRESS); |
| 378 | address_type = eAddressTypeLoad; |
| 379 | data.SetByteOrder(process->GetTarget().GetArchitecture().GetByteOrder()); |
| 380 | data.SetAddressByteSize(process->GetTarget().GetArchitecture().GetAddressByteSize()); |
| 381 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 382 | } |
| 383 | break; |
| 384 | |
| 385 | case eValueTypeFileAddress: |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 386 | if (exe_ctx == NULL) |
| 387 | { |
| 388 | error.SetErrorString ("can't read file address (no execution context)"); |
| 389 | } |
Greg Clayton | 567e7f3 | 2011-09-22 04:58:26 +0000 | [diff] [blame] | 390 | else if (exe_ctx->GetTargetPtr() == NULL) |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 391 | { |
| 392 | error.SetErrorString ("can't read file address (invalid target)"); |
| 393 | } |
| 394 | else |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 395 | { |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 396 | address = m_value.ULongLong(LLDB_INVALID_ADDRESS); |
| 397 | if (address == LLDB_INVALID_ADDRESS) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 398 | { |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 399 | error.SetErrorString ("invalid file address"); |
| 400 | } |
| 401 | else |
| 402 | { |
| 403 | if (module == NULL) |
| 404 | { |
| 405 | // The only thing we can currently lock down to a module so that |
| 406 | // we can resolve a file address, is a variable. |
| 407 | Variable *variable = GetVariable(); |
| 408 | if (variable) |
| 409 | { |
| 410 | SymbolContext var_sc; |
| 411 | variable->CalculateSymbolContext(&var_sc); |
| 412 | module = var_sc.module_sp.get(); |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | if (module) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 417 | { |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 418 | bool resolved = false; |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 419 | ObjectFile *objfile = module->GetObjectFile(); |
| 420 | if (objfile) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 421 | { |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 422 | Address so_addr(address, objfile->GetSectionList()); |
Greg Clayton | 567e7f3 | 2011-09-22 04:58:26 +0000 | [diff] [blame] | 423 | addr_t load_address = so_addr.GetLoadAddress (exe_ctx->GetTargetPtr()); |
Johnny Chen | 3c49d4c | 2012-02-02 22:11:13 +0000 | [diff] [blame] | 424 | bool process_launched_and_stopped = exe_ctx->GetProcessPtr() |
| 425 | ? StateIsStoppedState(exe_ctx->GetProcessPtr()->GetState(), true /* must_exist */) |
| 426 | : false; |
Johnny Chen | 6c49bf4 | 2012-02-02 19:55:18 +0000 | [diff] [blame] | 427 | // Don't use the load address if the process has exited. |
| 428 | if (load_address != LLDB_INVALID_ADDRESS && process_launched_and_stopped) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 429 | { |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 430 | resolved = true; |
| 431 | address = load_address; |
| 432 | address_type = eAddressTypeLoad; |
Greg Clayton | 567e7f3 | 2011-09-22 04:58:26 +0000 | [diff] [blame] | 433 | data.SetByteOrder(exe_ctx->GetTargetRef().GetArchitecture().GetByteOrder()); |
| 434 | data.SetAddressByteSize(exe_ctx->GetTargetRef().GetArchitecture().GetAddressByteSize()); |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 435 | } |
| 436 | else |
| 437 | { |
| 438 | if (so_addr.IsSectionOffset()) |
Greg Clayton | fe9864c | 2010-08-18 18:28:52 +0000 | [diff] [blame] | 439 | { |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 440 | resolved = true; |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 441 | file_so_addr = so_addr; |
| 442 | data.SetByteOrder(objfile->GetByteOrder()); |
| 443 | data.SetAddressByteSize(objfile->GetAddressByteSize()); |
Greg Clayton | fe9864c | 2010-08-18 18:28:52 +0000 | [diff] [blame] | 444 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 445 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 446 | } |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 447 | if (!resolved) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 448 | { |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 449 | Variable *variable = GetVariable(); |
| 450 | |
| 451 | if (module) |
| 452 | { |
| 453 | if (variable) |
Daniel Malea | 5f35a4b | 2012-11-29 21:49:15 +0000 | [diff] [blame] | 454 | error.SetErrorStringWithFormat ("unable to resolve the module for file address 0x%" PRIx64 " for variable '%s' in %s%s%s", |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 455 | address, |
| 456 | variable->GetName().AsCString(""), |
| 457 | module->GetFileSpec().GetDirectory().GetCString(), |
| 458 | module->GetFileSpec().GetDirectory() ? "/" : "", |
| 459 | module->GetFileSpec().GetFilename().GetCString()); |
| 460 | else |
Daniel Malea | 5f35a4b | 2012-11-29 21:49:15 +0000 | [diff] [blame] | 461 | error.SetErrorStringWithFormat ("unable to resolve the module for file address 0x%" PRIx64 " in %s%s%s", |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 462 | address, |
| 463 | module->GetFileSpec().GetDirectory().GetCString(), |
| 464 | module->GetFileSpec().GetDirectory() ? "/" : "", |
| 465 | module->GetFileSpec().GetFilename().GetCString()); |
| 466 | } |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 467 | else |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 468 | { |
| 469 | if (variable) |
Daniel Malea | 5f35a4b | 2012-11-29 21:49:15 +0000 | [diff] [blame] | 470 | error.SetErrorStringWithFormat ("unable to resolve the module for file address 0x%" PRIx64 " for variable '%s'", |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 471 | address, |
| 472 | variable->GetName().AsCString("")); |
| 473 | else |
Daniel Malea | 5f35a4b | 2012-11-29 21:49:15 +0000 | [diff] [blame] | 474 | error.SetErrorStringWithFormat ("unable to resolve the module for file address 0x%" PRIx64, address); |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 475 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 476 | } |
| 477 | } |
| 478 | else |
| 479 | { |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 480 | // Can't convert a file address to anything valid without more |
| 481 | // context (which Module it came from) |
| 482 | error.SetErrorString ("can't read memory from file address without more context"); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 483 | } |
| 484 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 485 | } |
| 486 | break; |
| 487 | |
| 488 | case eValueTypeHostAddress: |
| 489 | address = m_value.ULongLong(LLDB_INVALID_ADDRESS); |
Enrico Granata | 2d34a50 | 2012-04-24 01:23:23 +0000 | [diff] [blame] | 490 | address_type = eAddressTypeHost; |
| 491 | if (exe_ctx) |
| 492 | { |
| 493 | Target *target = exe_ctx->GetTargetPtr(); |
| 494 | if (target) |
| 495 | { |
| 496 | data.SetByteOrder(target->GetArchitecture().GetByteOrder()); |
| 497 | data.SetAddressByteSize(target->GetArchitecture().GetAddressByteSize()); |
| 498 | break; |
| 499 | } |
| 500 | } |
| 501 | // fallback to host settings |
Greg Clayton | cd54803 | 2011-02-01 01:31:41 +0000 | [diff] [blame] | 502 | data.SetByteOrder(lldb::endian::InlHostByteOrder()); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 503 | data.SetAddressByteSize(sizeof(void *)); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 504 | break; |
| 505 | } |
| 506 | |
| 507 | // Bail if we encountered any errors |
| 508 | if (error.Fail()) |
| 509 | return error; |
| 510 | |
| 511 | if (address == LLDB_INVALID_ADDRESS) |
| 512 | { |
Greg Clayton | a564ec6 | 2010-11-02 01:50:16 +0000 | [diff] [blame] | 513 | error.SetErrorStringWithFormat ("invalid %s address", address_type == eAddressTypeHost ? "host" : "load"); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 514 | return error; |
| 515 | } |
| 516 | |
| 517 | // If we got here, we need to read the value from memory |
| 518 | uint32_t byte_size = GetValueByteSize (ast_context, &error); |
| 519 | |
| 520 | // Bail if we encountered any errors getting the byte size |
| 521 | if (error.Fail()) |
| 522 | return error; |
| 523 | |
| 524 | // Make sure we have enough room within "data", and if we don't make |
| 525 | // something large enough that does |
| 526 | if (!data.ValidOffsetForDataOfSize (data_offset, byte_size)) |
| 527 | { |
| 528 | DataBufferSP data_sp(new DataBufferHeap (data_offset + byte_size, '\0')); |
| 529 | data.SetData(data_sp); |
| 530 | } |
| 531 | |
Greg Clayton | 54e7afa | 2010-07-09 20:39:50 +0000 | [diff] [blame] | 532 | uint8_t* dst = const_cast<uint8_t*>(data.PeekData (data_offset, byte_size)); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 533 | if (dst != NULL) |
| 534 | { |
| 535 | if (address_type == eAddressTypeHost) |
| 536 | { |
| 537 | // The address is an address in this process, so just copy it |
| 538 | memcpy (dst, (uint8_t*)NULL + address, byte_size); |
| 539 | } |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 540 | else if ((address_type == eAddressTypeLoad) || (address_type == eAddressTypeFile)) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 541 | { |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 542 | if (file_so_addr.IsValid()) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 543 | { |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 544 | // We have a file address that we were able to translate into a |
| 545 | // section offset address so we might be able to read this from |
| 546 | // the object files if we don't have a live process. Lets always |
| 547 | // try and read from the process if we have one though since we |
| 548 | // want to read the actual value by setting "prefer_file_cache" |
| 549 | // to false. |
| 550 | const bool prefer_file_cache = false; |
Greg Clayton | 567e7f3 | 2011-09-22 04:58:26 +0000 | [diff] [blame] | 551 | if (exe_ctx->GetTargetRef().ReadMemory(file_so_addr, prefer_file_cache, dst, byte_size, error) != byte_size) |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 552 | { |
Daniel Malea | 5f35a4b | 2012-11-29 21:49:15 +0000 | [diff] [blame] | 553 | error.SetErrorStringWithFormat("read memory from 0x%" PRIx64 " failed", (uint64_t)address); |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 554 | } |
| 555 | } |
| 556 | else |
| 557 | { |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 558 | // The execution context might have a NULL process, but it |
| 559 | // might have a valid process in the exe_ctx->target, so use |
| 560 | // the ExecutionContext::GetProcess accessor to ensure we |
| 561 | // get the process if there is one. |
Greg Clayton | 567e7f3 | 2011-09-22 04:58:26 +0000 | [diff] [blame] | 562 | Process *process = exe_ctx->GetProcessPtr(); |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 563 | |
| 564 | if (process) |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 565 | { |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 566 | const size_t bytes_read = process->ReadMemory(address, dst, byte_size, error); |
| 567 | if (bytes_read != byte_size) |
Daniel Malea | 5f35a4b | 2012-11-29 21:49:15 +0000 | [diff] [blame] | 568 | error.SetErrorStringWithFormat("read memory from 0x%" PRIx64 " failed (%u of %u bytes read)", |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 569 | (uint64_t)address, |
| 570 | (uint32_t)bytes_read, |
| 571 | (uint32_t)byte_size); |
| 572 | } |
| 573 | else |
| 574 | { |
Daniel Malea | 5f35a4b | 2012-11-29 21:49:15 +0000 | [diff] [blame] | 575 | error.SetErrorStringWithFormat("read memory from 0x%" PRIx64 " failed (invalid process)", (uint64_t)address); |
Greg Clayton | 917c000 | 2011-06-29 22:09:02 +0000 | [diff] [blame] | 576 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 577 | } |
| 578 | } |
| 579 | else |
| 580 | { |
Greg Clayton | b344843 | 2011-03-24 21:19:54 +0000 | [diff] [blame] | 581 | error.SetErrorStringWithFormat ("unsupported AddressType value (%i)", address_type); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 582 | } |
| 583 | } |
| 584 | else |
| 585 | { |
Greg Clayton | a564ec6 | 2010-11-02 01:50:16 +0000 | [diff] [blame] | 586 | error.SetErrorStringWithFormat ("out of memory"); |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 587 | } |
| 588 | |
| 589 | return error; |
| 590 | } |
| 591 | |
| 592 | Scalar & |
| 593 | Value::ResolveValue(ExecutionContext *exe_ctx, clang::ASTContext *ast_context) |
| 594 | { |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 595 | void *opaque_clang_qual_type = GetClangType(); |
| 596 | if (opaque_clang_qual_type) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 597 | { |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 598 | switch (m_value_type) |
| 599 | { |
| 600 | case eValueTypeScalar: // raw scalar value |
| 601 | break; |
| 602 | |
| 603 | default: |
| 604 | case eValueTypeFileAddress: |
| 605 | m_value.Clear(); |
| 606 | break; |
| 607 | |
| 608 | case eValueTypeLoadAddress: // load address value |
| 609 | case eValueTypeHostAddress: // host address value (for memory in the process that is using liblldb) |
| 610 | { |
Greg Clayton | b344843 | 2011-03-24 21:19:54 +0000 | [diff] [blame] | 611 | AddressType address_type = m_value_type == eValueTypeLoadAddress ? eAddressTypeLoad : eAddressTypeHost; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 612 | lldb::addr_t addr = m_value.ULongLong(LLDB_INVALID_ADDRESS); |
| 613 | DataExtractor data; |
Greg Clayton | 1674b12 | 2010-07-21 22:12:05 +0000 | [diff] [blame] | 614 | if (ClangASTType::ReadFromMemory (ast_context, opaque_clang_qual_type, exe_ctx, addr, address_type, data)) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 615 | { |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 616 | Scalar scalar; |
Greg Clayton | 1674b12 | 2010-07-21 22:12:05 +0000 | [diff] [blame] | 617 | if (ClangASTType::GetValueAsScalar (ast_context, opaque_clang_qual_type, data, 0, data.GetByteSize(), scalar)) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 618 | { |
| 619 | m_value = scalar; |
| 620 | m_value_type = eValueTypeScalar; |
| 621 | } |
| 622 | else |
| 623 | { |
| 624 | if ((uintptr_t)addr != (uintptr_t)m_data_buffer.GetBytes()) |
| 625 | { |
| 626 | m_value.Clear(); |
| 627 | m_value_type = eValueTypeScalar; |
| 628 | } |
| 629 | } |
| 630 | } |
| 631 | else |
| 632 | { |
| 633 | if ((uintptr_t)addr != (uintptr_t)m_data_buffer.GetBytes()) |
| 634 | { |
| 635 | m_value.Clear(); |
| 636 | m_value_type = eValueTypeScalar; |
| 637 | } |
| 638 | } |
| 639 | } |
| 640 | break; |
| 641 | } |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 642 | } |
| 643 | return m_value; |
| 644 | } |
| 645 | |
| 646 | Variable * |
| 647 | Value::GetVariable() |
| 648 | { |
Greg Clayton | 6916e35 | 2010-11-13 03:52:47 +0000 | [diff] [blame] | 649 | if (m_context_type == eContextTypeVariable) |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 650 | return static_cast<Variable *> (m_context); |
| 651 | return NULL; |
| 652 | } |
| 653 | |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 654 | const char * |
| 655 | Value::GetValueTypeAsCString (ValueType value_type) |
| 656 | { |
| 657 | switch (value_type) |
| 658 | { |
| 659 | case eValueTypeScalar: return "scalar"; |
Greg Clayton | f0fab4f | 2012-10-30 23:56:14 +0000 | [diff] [blame] | 660 | case eValueTypeVector: return "vector"; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 661 | case eValueTypeFileAddress: return "file address"; |
| 662 | case eValueTypeLoadAddress: return "load address"; |
| 663 | case eValueTypeHostAddress: return "host address"; |
| 664 | }; |
| 665 | return "???"; |
| 666 | } |
| 667 | |
| 668 | const char * |
| 669 | Value::GetContextTypeAsCString (ContextType context_type) |
| 670 | { |
| 671 | switch (context_type) |
| 672 | { |
Greg Clayton | 801417e | 2011-07-07 01:59:51 +0000 | [diff] [blame] | 673 | case eContextTypeInvalid: return "invalid"; |
| 674 | case eContextTypeClangType: return "clang::Type *"; |
| 675 | case eContextTypeRegisterInfo: return "RegisterInfo *"; |
| 676 | case eContextTypeLLDBType: return "Type *"; |
| 677 | case eContextTypeVariable: return "Variable *"; |
Chris Lattner | 24943d2 | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 678 | }; |
| 679 | return "???"; |
| 680 | } |
| 681 | |
| 682 | ValueList::ValueList (const ValueList &rhs) |
| 683 | { |
| 684 | m_values = rhs.m_values; |
| 685 | } |
| 686 | |
| 687 | const ValueList & |
| 688 | ValueList::operator= (const ValueList &rhs) |
| 689 | { |
| 690 | m_values = rhs.m_values; |
| 691 | return *this; |
| 692 | } |
| 693 | |
| 694 | void |
| 695 | ValueList::PushValue (const Value &value) |
| 696 | { |
| 697 | m_values.push_back (value); |
| 698 | } |
| 699 | |
| 700 | size_t |
| 701 | ValueList::GetSize() |
| 702 | { |
| 703 | return m_values.size(); |
| 704 | } |
| 705 | |
| 706 | Value * |
| 707 | ValueList::GetValueAtIndex (size_t idx) |
| 708 | { |
| 709 | if (idx < GetSize()) |
| 710 | { |
| 711 | return &(m_values[idx]); |
| 712 | } |
| 713 | else |
| 714 | return NULL; |
| 715 | } |
| 716 | |
| 717 | void |
| 718 | ValueList::Clear () |
| 719 | { |
| 720 | m_values.clear(); |
| 721 | } |