1 //===-- StackFrame.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/Target/StackFrame.h" 11 12 // C Includes 13 // C++ Includes 14 // Other libraries and framework includes 15 // Project includes 16 #include "lldb/Core/Module.h" 17 #include "lldb/Core/Debugger.h" 18 #include "lldb/Core/Disassembler.h" 19 #include "lldb/Core/Value.h" 20 #include "lldb/Core/ValueObjectVariable.h" 21 #include "lldb/Core/ValueObjectConstResult.h" 22 #include "lldb/Symbol/Function.h" 23 #include "lldb/Symbol/VariableList.h" 24 #include "lldb/Target/ExecutionContext.h" 25 #include "lldb/Target/Process.h" 26 #include "lldb/Target/RegisterContext.h" 27 #include "lldb/Target/Target.h" 28 #include "lldb/Target/Thread.h" 29 30 using namespace lldb; 31 using namespace lldb_private; 32 33 // The first bits in the flags are reserved for the SymbolContext::Scope bits 34 // so we know if we have tried to look up information in our internal symbol 35 // context (m_sc) already. 36 #define RESOLVED_FRAME_CODE_ADDR (uint32_t(eSymbolContextEverything + 1)) 37 #define RESOLVED_FRAME_ID_SYMBOL_SCOPE (RESOLVED_FRAME_CODE_ADDR << 1) 38 #define GOT_FRAME_BASE (RESOLVED_FRAME_ID_SYMBOL_SCOPE << 1) 39 #define RESOLVED_VARIABLES (GOT_FRAME_BASE << 1) 40 #define RESOLVED_GLOBAL_VARIABLES (RESOLVED_VARIABLES << 1) 41 42 StackFrame::StackFrame (const ThreadSP &thread_sp, 43 user_id_t frame_idx, 44 user_id_t unwind_frame_index, 45 addr_t cfa, 46 addr_t pc, 47 const SymbolContext *sc_ptr) : 48 m_thread_wp (thread_sp), 49 m_frame_index (frame_idx), 50 m_concrete_frame_index (unwind_frame_index), 51 m_reg_context_sp (), 52 m_id (pc, cfa, NULL), 53 m_frame_code_addr (pc), 54 m_sc (), 55 m_flags (), 56 m_frame_base (), 57 m_frame_base_error (), 58 m_variable_list_sp (), 59 m_variable_list_value_objects (), 60 m_disassembly () 61 { 62 if (sc_ptr != NULL) 63 { 64 m_sc = *sc_ptr; 65 m_flags.Set(m_sc.GetResolvedMask ()); 66 } 67 } 68 69 StackFrame::StackFrame (const ThreadSP &thread_sp, 70 user_id_t frame_idx, 71 user_id_t unwind_frame_index, 72 const RegisterContextSP ®_context_sp, 73 addr_t cfa, 74 addr_t pc, 75 const SymbolContext *sc_ptr) : 76 m_thread_wp (thread_sp), 77 m_frame_index (frame_idx), 78 m_concrete_frame_index (unwind_frame_index), 79 m_reg_context_sp (reg_context_sp), 80 m_id (pc, cfa, NULL), 81 m_frame_code_addr (pc), 82 m_sc (), 83 m_flags (), 84 m_frame_base (), 85 m_frame_base_error (), 86 m_variable_list_sp (), 87 m_variable_list_value_objects (), 88 m_disassembly () 89 { 90 if (sc_ptr != NULL) 91 { 92 m_sc = *sc_ptr; 93 m_flags.Set(m_sc.GetResolvedMask ()); 94 } 95 96 if (reg_context_sp && !m_sc.target_sp) 97 { 98 m_sc.target_sp = reg_context_sp->CalculateTarget(); 99 if (m_sc.target_sp) 100 m_flags.Set (eSymbolContextTarget); 101 } 102 } 103 104 StackFrame::StackFrame (const ThreadSP &thread_sp, 105 user_id_t frame_idx, 106 user_id_t unwind_frame_index, 107 const RegisterContextSP ®_context_sp, 108 addr_t cfa, 109 const Address& pc_addr, 110 const SymbolContext *sc_ptr) : 111 m_thread_wp (thread_sp), 112 m_frame_index (frame_idx), 113 m_concrete_frame_index (unwind_frame_index), 114 m_reg_context_sp (reg_context_sp), 115 m_id (pc_addr.GetLoadAddress (thread_sp->CalculateTarget().get()), cfa, NULL), 116 m_frame_code_addr (pc_addr), 117 m_sc (), 118 m_flags (), 119 m_frame_base (), 120 m_frame_base_error (), 121 m_variable_list_sp (), 122 m_variable_list_value_objects (), 123 m_disassembly () 124 { 125 if (sc_ptr != NULL) 126 { 127 m_sc = *sc_ptr; 128 m_flags.Set(m_sc.GetResolvedMask ()); 129 } 130 131 if (m_sc.target_sp.get() == NULL && reg_context_sp) 132 { 133 m_sc.target_sp = reg_context_sp->CalculateTarget(); 134 if (m_sc.target_sp) 135 m_flags.Set (eSymbolContextTarget); 136 } 137 138 ModuleSP pc_module_sp (pc_addr.GetModule()); 139 if (!m_sc.module_sp || m_sc.module_sp != pc_module_sp) 140 { 141 if (pc_module_sp) 142 { 143 m_sc.module_sp = pc_module_sp; 144 m_flags.Set (eSymbolContextModule); 145 } 146 else 147 { 148 m_sc.module_sp.reset(); 149 } 150 } 151 } 152 153 154 //---------------------------------------------------------------------- 155 // Destructor 156 //---------------------------------------------------------------------- 157 StackFrame::~StackFrame() 158 { 159 } 160 161 StackID& 162 StackFrame::GetStackID() 163 { 164 // Make sure we have resolved the StackID object's symbol context scope if 165 // we already haven't looked it up. 166 167 if (m_flags.IsClear (RESOLVED_FRAME_ID_SYMBOL_SCOPE)) 168 { 169 if (m_id.GetSymbolContextScope ()) 170 { 171 // We already have a symbol context scope, we just don't have our 172 // flag bit set. 173 m_flags.Set (RESOLVED_FRAME_ID_SYMBOL_SCOPE); 174 } 175 else 176 { 177 // Calculate the frame block and use this for the stack ID symbol 178 // context scope if we have one. 179 SymbolContextScope *scope = GetFrameBlock (); 180 if (scope == NULL) 181 { 182 // We don't have a block, so use the symbol 183 if (m_flags.IsClear (eSymbolContextSymbol)) 184 GetSymbolContext (eSymbolContextSymbol); 185 186 // It is ok if m_sc.symbol is NULL here 187 scope = m_sc.symbol; 188 } 189 // Set the symbol context scope (the accessor will set the 190 // RESOLVED_FRAME_ID_SYMBOL_SCOPE bit in m_flags). 191 SetSymbolContextScope (scope); 192 } 193 } 194 return m_id; 195 } 196 197 void 198 StackFrame::SetSymbolContextScope (SymbolContextScope *symbol_scope) 199 { 200 m_flags.Set (RESOLVED_FRAME_ID_SYMBOL_SCOPE); 201 m_id.SetSymbolContextScope (symbol_scope); 202 } 203 204 const Address& 205 StackFrame::GetFrameCodeAddress() 206 { 207 if (m_flags.IsClear(RESOLVED_FRAME_CODE_ADDR) && !m_frame_code_addr.IsSectionOffset()) 208 { 209 m_flags.Set (RESOLVED_FRAME_CODE_ADDR); 210 211 // Resolve the PC into a temporary address because if ResolveLoadAddress 212 // fails to resolve the address, it will clear the address object... 213 ThreadSP thread_sp (GetThread()); 214 if (thread_sp) 215 { 216 TargetSP target_sp (thread_sp->CalculateTarget()); 217 if (target_sp) 218 { 219 if (m_frame_code_addr.SetOpcodeLoadAddress (m_frame_code_addr.GetOffset(), target_sp.get())) 220 { 221 ModuleSP module_sp (m_frame_code_addr.GetModule()); 222 if (module_sp) 223 { 224 m_sc.module_sp = module_sp; 225 m_flags.Set(eSymbolContextModule); 226 } 227 } 228 } 229 } 230 } 231 return m_frame_code_addr; 232 } 233 234 void 235 StackFrame::ChangePC (addr_t pc) 236 { 237 m_frame_code_addr.SetRawAddress(pc); 238 m_sc.Clear(); 239 m_flags.Reset(0); 240 ThreadSP thread_sp (GetThread()); 241 if (thread_sp) 242 thread_sp->ClearStackFrames (); 243 } 244 245 const char * 246 StackFrame::Disassemble () 247 { 248 if (m_disassembly.GetSize() == 0) 249 { 250 ExecutionContext exe_ctx (shared_from_this()); 251 Target *target = exe_ctx.GetTargetPtr(); 252 if (target) 253 { 254 Disassembler::Disassemble (target->GetDebugger(), 255 target->GetArchitecture(), 256 NULL, 257 exe_ctx, 258 0, 259 0, 260 0, 261 m_disassembly); 262 } 263 if (m_disassembly.GetSize() == 0) 264 return NULL; 265 } 266 return m_disassembly.GetData(); 267 } 268 269 Block * 270 StackFrame::GetFrameBlock () 271 { 272 if (m_sc.block == NULL && m_flags.IsClear (eSymbolContextBlock)) 273 GetSymbolContext (eSymbolContextBlock); 274 275 if (m_sc.block) 276 { 277 Block *inline_block = m_sc.block->GetContainingInlinedBlock(); 278 if (inline_block) 279 { 280 // Use the block with the inlined function info 281 // as the frame block we want this frame to have only the variables 282 // for the inlined function and its non-inlined block child blocks. 283 return inline_block; 284 } 285 else 286 { 287 // This block is not contained withing any inlined function blocks 288 // with so we want to use the top most function block. 289 return &m_sc.function->GetBlock (false); 290 } 291 } 292 return NULL; 293 } 294 295 //---------------------------------------------------------------------- 296 // Get the symbol context if we already haven't done so by resolving the 297 // PC address as much as possible. This way when we pass around a 298 // StackFrame object, everyone will have as much information as 299 // possible and no one will ever have to look things up manually. 300 //---------------------------------------------------------------------- 301 const SymbolContext& 302 StackFrame::GetSymbolContext (uint32_t resolve_scope) 303 { 304 // Copy our internal symbol context into "sc". 305 if ((m_flags.Get() & resolve_scope) != resolve_scope) 306 { 307 // Resolve our PC to section offset if we haven't alreday done so 308 // and if we don't have a module. The resolved address section will 309 // contain the module to which it belongs 310 if (!m_sc.module_sp && m_flags.IsClear(RESOLVED_FRAME_CODE_ADDR)) 311 GetFrameCodeAddress(); 312 313 // If this is not frame zero, then we need to subtract 1 from the PC 314 // value when doing address lookups since the PC will be on the 315 // instruction following the function call instruction... 316 317 Address lookup_addr(GetFrameCodeAddress()); 318 if (m_frame_index > 0 && lookup_addr.IsValid()) 319 { 320 addr_t offset = lookup_addr.GetOffset(); 321 if (offset > 0) 322 lookup_addr.SetOffset(offset - 1); 323 } 324 325 326 uint32_t resolved = 0; 327 if (m_sc.module_sp) 328 { 329 // We have something in our stack frame symbol context, lets check 330 // if we haven't already tried to lookup one of those things. If we 331 // haven't then we will do the query. 332 333 uint32_t actual_resolve_scope = 0; 334 335 if (resolve_scope & eSymbolContextCompUnit) 336 { 337 if (m_flags.IsClear (eSymbolContextCompUnit)) 338 { 339 if (m_sc.comp_unit) 340 resolved |= eSymbolContextCompUnit; 341 else 342 actual_resolve_scope |= eSymbolContextCompUnit; 343 } 344 } 345 346 if (resolve_scope & eSymbolContextFunction) 347 { 348 if (m_flags.IsClear (eSymbolContextFunction)) 349 { 350 if (m_sc.function) 351 resolved |= eSymbolContextFunction; 352 else 353 actual_resolve_scope |= eSymbolContextFunction; 354 } 355 } 356 357 if (resolve_scope & eSymbolContextBlock) 358 { 359 if (m_flags.IsClear (eSymbolContextBlock)) 360 { 361 if (m_sc.block) 362 resolved |= eSymbolContextBlock; 363 else 364 actual_resolve_scope |= eSymbolContextBlock; 365 } 366 } 367 368 if (resolve_scope & eSymbolContextSymbol) 369 { 370 if (m_flags.IsClear (eSymbolContextSymbol)) 371 { 372 if (m_sc.symbol) 373 resolved |= eSymbolContextSymbol; 374 else 375 actual_resolve_scope |= eSymbolContextSymbol; 376 } 377 } 378 379 if (resolve_scope & eSymbolContextLineEntry) 380 { 381 if (m_flags.IsClear (eSymbolContextLineEntry)) 382 { 383 if (m_sc.line_entry.IsValid()) 384 resolved |= eSymbolContextLineEntry; 385 else 386 actual_resolve_scope |= eSymbolContextLineEntry; 387 } 388 } 389 390 if (actual_resolve_scope) 391 { 392 // We might be resolving less information than what is already 393 // in our current symbol context so resolve into a temporary 394 // symbol context "sc" so we don't clear out data we have 395 // already found in "m_sc" 396 SymbolContext sc; 397 // Set flags that indicate what we have tried to resolve 398 resolved |= m_sc.module_sp->ResolveSymbolContextForAddress (lookup_addr, actual_resolve_scope, sc); 399 // Only replace what we didn't already have as we may have 400 // information for an inlined function scope that won't match 401 // what a standard lookup by address would match 402 if ((resolved & eSymbolContextCompUnit) && m_sc.comp_unit == NULL) 403 m_sc.comp_unit = sc.comp_unit; 404 if ((resolved & eSymbolContextFunction) && m_sc.function == NULL) 405 m_sc.function = sc.function; 406 if ((resolved & eSymbolContextBlock) && m_sc.block == NULL) 407 m_sc.block = sc.block; 408 if ((resolved & eSymbolContextSymbol) && m_sc.symbol == NULL) 409 m_sc.symbol = sc.symbol; 410 if ((resolved & eSymbolContextLineEntry) && !m_sc.line_entry.IsValid()) 411 m_sc.line_entry = sc.line_entry; 412 413 } 414 } 415 else 416 { 417 // If we don't have a module, then we can't have the compile unit, 418 // function, block, line entry or symbol, so we can safely call 419 // ResolveSymbolContextForAddress with our symbol context member m_sc. 420 TargetSP target_sp (CalculateTarget()); 421 if (target_sp) 422 resolved |= target_sp->GetImages().ResolveSymbolContextForAddress (lookup_addr, resolve_scope, m_sc); 423 } 424 425 // If the target was requested add that: 426 if (!m_sc.target_sp) 427 { 428 m_sc.target_sp = CalculateTarget(); 429 if (m_sc.target_sp) 430 resolved |= eSymbolContextTarget; 431 } 432 433 // Update our internal flags so we remember what we have tried to locate so 434 // we don't have to keep trying when more calls to this function are made. 435 // We might have dug up more information that was requested (for example 436 // if we were asked to only get the block, we will have gotten the 437 // compile unit, and function) so set any additional bits that we resolved 438 m_flags.Set (resolve_scope | resolved); 439 } 440 441 // Return the symbol context with everything that was possible to resolve 442 // resolved. 443 return m_sc; 444 } 445 446 447 VariableList * 448 StackFrame::GetVariableList (bool get_file_globals) 449 { 450 if (m_flags.IsClear(RESOLVED_VARIABLES)) 451 { 452 m_flags.Set(RESOLVED_VARIABLES); 453 454 Block *frame_block = GetFrameBlock(); 455 456 if (frame_block) 457 { 458 const bool get_child_variables = true; 459 const bool can_create = true; 460 const bool stop_if_child_block_is_inlined_function = true; 461 m_variable_list_sp.reset(new VariableList()); 462 frame_block->AppendBlockVariables(can_create, get_child_variables, stop_if_child_block_is_inlined_function, m_variable_list_sp.get()); 463 } 464 } 465 466 if (m_flags.IsClear(RESOLVED_GLOBAL_VARIABLES) && 467 get_file_globals) 468 { 469 m_flags.Set(RESOLVED_GLOBAL_VARIABLES); 470 471 if (m_flags.IsClear (eSymbolContextCompUnit)) 472 GetSymbolContext (eSymbolContextCompUnit); 473 474 if (m_sc.comp_unit) 475 { 476 VariableListSP global_variable_list_sp (m_sc.comp_unit->GetVariableList(true)); 477 if (m_variable_list_sp) 478 m_variable_list_sp->AddVariables (global_variable_list_sp.get()); 479 else 480 m_variable_list_sp = global_variable_list_sp; 481 } 482 } 483 484 return m_variable_list_sp.get(); 485 } 486 487 VariableListSP 488 StackFrame::GetInScopeVariableList (bool get_file_globals) 489 { 490 VariableListSP var_list_sp(new VariableList); 491 GetSymbolContext (eSymbolContextCompUnit | eSymbolContextBlock); 492 493 if (m_sc.block) 494 { 495 const bool can_create = true; 496 const bool get_parent_variables = true; 497 const bool stop_if_block_is_inlined_function = true; 498 m_sc.block->AppendVariables (can_create, 499 get_parent_variables, 500 stop_if_block_is_inlined_function, 501 var_list_sp.get()); 502 } 503 504 if (m_sc.comp_unit) 505 { 506 VariableListSP global_variable_list_sp (m_sc.comp_unit->GetVariableList(true)); 507 if (global_variable_list_sp) 508 var_list_sp->AddVariables (global_variable_list_sp.get()); 509 } 510 511 return var_list_sp; 512 } 513 514 515 ValueObjectSP 516 StackFrame::GetValueForVariableExpressionPath (const char *var_expr_cstr, 517 DynamicValueType use_dynamic, 518 uint32_t options, 519 VariableSP &var_sp, 520 Error &error) 521 { 522 523 if (var_expr_cstr && var_expr_cstr[0]) 524 { 525 const bool check_ptr_vs_member = (options & eExpressionPathOptionCheckPtrVsMember) != 0; 526 const bool no_fragile_ivar = (options & eExpressionPathOptionsNoFragileObjcIvar) != 0; 527 const bool no_synth_child = (options & eExpressionPathOptionsNoSyntheticChildren) != 0; 528 //const bool no_synth_array = (options & eExpressionPathOptionsNoSyntheticArrayRange) != 0; 529 error.Clear(); 530 bool deref = false; 531 bool address_of = false; 532 ValueObjectSP valobj_sp; 533 const bool get_file_globals = true; 534 // When looking up a variable for an expression, we need only consider the 535 // variables that are in scope. 536 VariableListSP var_list_sp (GetInScopeVariableList (get_file_globals)); 537 VariableList *variable_list = var_list_sp.get(); 538 539 if (variable_list) 540 { 541 // If first character is a '*', then show pointer contents 542 const char *var_expr = var_expr_cstr; 543 if (var_expr[0] == '*') 544 { 545 deref = true; 546 var_expr++; // Skip the '*' 547 } 548 else if (var_expr[0] == '&') 549 { 550 address_of = true; 551 var_expr++; // Skip the '&' 552 } 553 554 std::string var_path (var_expr); 555 size_t separator_idx = var_path.find_first_of(".-[=+~|&^%#@!/?,<>{}"); 556 StreamString var_expr_path_strm; 557 558 ConstString name_const_string; 559 if (separator_idx == std::string::npos) 560 name_const_string.SetCString (var_path.c_str()); 561 else 562 name_const_string.SetCStringWithLength (var_path.c_str(), separator_idx); 563 564 var_sp = variable_list->FindVariable(name_const_string); 565 if (var_sp) 566 { 567 valobj_sp = GetValueObjectForFrameVariable (var_sp, use_dynamic); 568 if (!valobj_sp) 569 return valobj_sp; 570 571 var_path.erase (0, name_const_string.GetLength ()); 572 // We are dumping at least one child 573 while (separator_idx != std::string::npos) 574 { 575 // Calculate the next separator index ahead of time 576 ValueObjectSP child_valobj_sp; 577 const char separator_type = var_path[0]; 578 switch (separator_type) 579 { 580 581 case '-': 582 if (var_path.size() >= 2 && var_path[1] != '>') 583 return ValueObjectSP(); 584 585 if (no_fragile_ivar) 586 { 587 // Make sure we aren't trying to deref an objective 588 // C ivar if this is not allowed 589 const uint32_t pointer_type_flags = ClangASTContext::GetTypeInfo (valobj_sp->GetClangType(), NULL, NULL); 590 if ((pointer_type_flags & ClangASTContext::eTypeIsObjC) && 591 (pointer_type_flags & ClangASTContext::eTypeIsPointer)) 592 { 593 // This was an objective C object pointer and 594 // it was requested we skip any fragile ivars 595 // so return nothing here 596 return ValueObjectSP(); 597 } 598 } 599 var_path.erase (0, 1); // Remove the '-' 600 // Fall through 601 case '.': 602 { 603 const bool expr_is_ptr = var_path[0] == '>'; 604 605 var_path.erase (0, 1); // Remove the '.' or '>' 606 separator_idx = var_path.find_first_of(".-["); 607 ConstString child_name; 608 if (separator_idx == std::string::npos) 609 child_name.SetCString (var_path.c_str()); 610 else 611 child_name.SetCStringWithLength(var_path.c_str(), separator_idx); 612 613 if (check_ptr_vs_member) 614 { 615 // We either have a pointer type and need to verify 616 // valobj_sp is a pointer, or we have a member of a 617 // class/union/struct being accessed with the . syntax 618 // and need to verify we don't have a pointer. 619 const bool actual_is_ptr = valobj_sp->IsPointerType (); 620 621 if (actual_is_ptr != expr_is_ptr) 622 { 623 // Incorrect use of "." with a pointer, or "->" with 624 // a class/union/struct instance or reference. 625 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 626 if (actual_is_ptr) 627 error.SetErrorStringWithFormat ("\"%s\" is a pointer and . was used to attempt to access \"%s\". Did you mean \"%s->%s\"?", 628 var_expr_path_strm.GetString().c_str(), 629 child_name.GetCString(), 630 var_expr_path_strm.GetString().c_str(), 631 var_path.c_str()); 632 else 633 error.SetErrorStringWithFormat ("\"%s\" is not a pointer and -> was used to attempt to access \"%s\". Did you mean \"%s.%s\"?", 634 var_expr_path_strm.GetString().c_str(), 635 child_name.GetCString(), 636 var_expr_path_strm.GetString().c_str(), 637 var_path.c_str()); 638 return ValueObjectSP(); 639 } 640 } 641 child_valobj_sp = valobj_sp->GetChildMemberWithName (child_name, true); 642 if (!child_valobj_sp) 643 { 644 if (no_synth_child == false) 645 child_valobj_sp = valobj_sp->GetSyntheticValue(eUseSyntheticFilter)->GetChildMemberWithName (child_name, true); 646 647 if (no_synth_child || !child_valobj_sp) 648 { 649 // No child member with name "child_name" 650 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 651 if (child_name) 652 { 653 error.SetErrorStringWithFormat ("\"%s\" is not a member of \"(%s) %s\"", 654 child_name.GetCString(), 655 valobj_sp->GetTypeName().AsCString("<invalid type>"), 656 var_expr_path_strm.GetString().c_str()); 657 } 658 else 659 { 660 error.SetErrorStringWithFormat ("incomplete expression path after \"%s\" in \"%s\"", 661 var_expr_path_strm.GetString().c_str(), 662 var_expr_cstr); 663 } 664 return ValueObjectSP(); 665 } 666 } 667 // Remove the child name from the path 668 var_path.erase(0, child_name.GetLength()); 669 if (use_dynamic != eNoDynamicValues) 670 { 671 ValueObjectSP dynamic_value_sp(child_valobj_sp->GetDynamicValue(use_dynamic)); 672 if (dynamic_value_sp) 673 child_valobj_sp = dynamic_value_sp; 674 } 675 } 676 break; 677 678 case '[': 679 // Array member access, or treating pointer as an array 680 if (var_path.size() > 2) // Need at least two brackets and a number 681 { 682 char *end = NULL; 683 long child_index = ::strtol (&var_path[1], &end, 0); 684 if (end && *end == ']' 685 && *(end-1) != '[') // this code forces an error in the case of arr[]. as bitfield[] is not a good syntax we're good to go 686 { 687 if (ClangASTContext::IsPointerToScalarType(valobj_sp->GetClangType()) && deref) 688 { 689 // what we have is *ptr[low]. the most similar C++ syntax is to deref ptr 690 // and extract bit low out of it. reading array item low 691 // would be done by saying ptr[low], without a deref * sign 692 Error error; 693 ValueObjectSP temp(valobj_sp->Dereference(error)); 694 if (error.Fail()) 695 { 696 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 697 error.SetErrorStringWithFormat ("could not dereference \"(%s) %s\"", 698 valobj_sp->GetTypeName().AsCString("<invalid type>"), 699 var_expr_path_strm.GetString().c_str()); 700 return ValueObjectSP(); 701 } 702 valobj_sp = temp; 703 deref = false; 704 } 705 else if (ClangASTContext::IsArrayOfScalarType(valobj_sp->GetClangType()) && deref) 706 { 707 // what we have is *arr[low]. the most similar C++ syntax is to get arr[0] 708 // (an operation that is equivalent to deref-ing arr) 709 // and extract bit low out of it. reading array item low 710 // would be done by saying arr[low], without a deref * sign 711 Error error; 712 ValueObjectSP temp(valobj_sp->GetChildAtIndex (0, true)); 713 if (error.Fail()) 714 { 715 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 716 error.SetErrorStringWithFormat ("could not get item 0 for \"(%s) %s\"", 717 valobj_sp->GetTypeName().AsCString("<invalid type>"), 718 var_expr_path_strm.GetString().c_str()); 719 return ValueObjectSP(); 720 } 721 valobj_sp = temp; 722 deref = false; 723 } 724 725 if (valobj_sp->IsPointerType ()) 726 { 727 bool is_objc_pointer = true; 728 729 if (ClangASTType::GetMinimumLanguage(valobj_sp->GetClangAST(), valobj_sp->GetClangType()) != eLanguageTypeObjC) 730 is_objc_pointer = false; 731 else if (!ClangASTContext::IsPointerType(valobj_sp->GetClangType())) 732 is_objc_pointer = false; 733 734 if (no_synth_child && is_objc_pointer) 735 { 736 error.SetErrorStringWithFormat("\"(%s) %s\" is an Objective-C pointer, and cannot be subscripted", 737 valobj_sp->GetTypeName().AsCString("<invalid type>"), 738 var_expr_path_strm.GetString().c_str()); 739 740 return ValueObjectSP(); 741 } 742 else if (is_objc_pointer) 743 { 744 // dereferencing ObjC variables is not valid.. so let's try and recur to synthetic children 745 ValueObjectSP synthetic = valobj_sp->GetSyntheticValue(eUseSyntheticFilter); 746 if (synthetic.get() == NULL /* no synthetic */ 747 || synthetic == valobj_sp) /* synthetic is the same as the original object */ 748 { 749 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 750 error.SetErrorStringWithFormat ("\"(%s) %s\" is not an array type", 751 valobj_sp->GetTypeName().AsCString("<invalid type>"), 752 var_expr_path_strm.GetString().c_str()); 753 } 754 else if (child_index >= synthetic->GetNumChildren() /* synthetic does not have that many values */) 755 { 756 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 757 error.SetErrorStringWithFormat ("array index %ld is not valid for \"(%s) %s\"", 758 child_index, 759 valobj_sp->GetTypeName().AsCString("<invalid type>"), 760 var_expr_path_strm.GetString().c_str()); 761 } 762 else 763 { 764 child_valobj_sp = synthetic->GetChildAtIndex(child_index, true); 765 if (!child_valobj_sp) 766 { 767 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 768 error.SetErrorStringWithFormat ("array index %ld is not valid for \"(%s) %s\"", 769 child_index, 770 valobj_sp->GetTypeName().AsCString("<invalid type>"), 771 var_expr_path_strm.GetString().c_str()); 772 } 773 } 774 } 775 else 776 { 777 child_valobj_sp = valobj_sp->GetSyntheticArrayMemberFromPointer (child_index, true); 778 if (!child_valobj_sp) 779 { 780 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 781 error.SetErrorStringWithFormat ("failed to use pointer as array for index %ld for \"(%s) %s\"", 782 child_index, 783 valobj_sp->GetTypeName().AsCString("<invalid type>"), 784 var_expr_path_strm.GetString().c_str()); 785 } 786 } 787 } 788 else if (ClangASTContext::IsArrayType (valobj_sp->GetClangType(), NULL, NULL)) 789 { 790 // Pass false to dynamic_value here so we can tell the difference between 791 // no dynamic value and no member of this type... 792 child_valobj_sp = valobj_sp->GetChildAtIndex (child_index, true); 793 if (!child_valobj_sp) 794 { 795 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 796 error.SetErrorStringWithFormat ("array index %ld is not valid for \"(%s) %s\"", 797 child_index, 798 valobj_sp->GetTypeName().AsCString("<invalid type>"), 799 var_expr_path_strm.GetString().c_str()); 800 } 801 } 802 else if (ClangASTContext::IsScalarType(valobj_sp->GetClangType())) 803 { 804 // this is a bitfield asking to display just one bit 805 child_valobj_sp = valobj_sp->GetSyntheticBitFieldChild(child_index, child_index, true); 806 if (!child_valobj_sp) 807 { 808 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 809 error.SetErrorStringWithFormat ("bitfield range %ld-%ld is not valid for \"(%s) %s\"", 810 child_index, child_index, 811 valobj_sp->GetTypeName().AsCString("<invalid type>"), 812 var_expr_path_strm.GetString().c_str()); 813 } 814 } 815 else 816 { 817 ValueObjectSP synthetic = valobj_sp->GetSyntheticValue(eUseSyntheticFilter); 818 if (no_synth_child /* synthetic is forbidden */ || 819 synthetic.get() == NULL /* no synthetic */ 820 || synthetic == valobj_sp) /* synthetic is the same as the original object */ 821 { 822 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 823 error.SetErrorStringWithFormat ("\"(%s) %s\" is not an array type", 824 valobj_sp->GetTypeName().AsCString("<invalid type>"), 825 var_expr_path_strm.GetString().c_str()); 826 } 827 else if (child_index >= synthetic->GetNumChildren() /* synthetic does not have that many values */) 828 { 829 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 830 error.SetErrorStringWithFormat ("array index %ld is not valid for \"(%s) %s\"", 831 child_index, 832 valobj_sp->GetTypeName().AsCString("<invalid type>"), 833 var_expr_path_strm.GetString().c_str()); 834 } 835 else 836 { 837 child_valobj_sp = synthetic->GetChildAtIndex(child_index, true); 838 if (!child_valobj_sp) 839 { 840 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 841 error.SetErrorStringWithFormat ("array index %ld is not valid for \"(%s) %s\"", 842 child_index, 843 valobj_sp->GetTypeName().AsCString("<invalid type>"), 844 var_expr_path_strm.GetString().c_str()); 845 } 846 } 847 } 848 849 if (!child_valobj_sp) 850 { 851 // Invalid array index... 852 return ValueObjectSP(); 853 } 854 855 // Erase the array member specification '[%i]' where 856 // %i is the array index 857 var_path.erase(0, (end - var_path.c_str()) + 1); 858 separator_idx = var_path.find_first_of(".-["); 859 if (use_dynamic != eNoDynamicValues) 860 { 861 ValueObjectSP dynamic_value_sp(child_valobj_sp->GetDynamicValue(use_dynamic)); 862 if (dynamic_value_sp) 863 child_valobj_sp = dynamic_value_sp; 864 } 865 // Break out early from the switch since we were 866 // able to find the child member 867 break; 868 } 869 else if (end && *end == '-') 870 { 871 // this is most probably a BitField, let's take a look 872 char *real_end = NULL; 873 long final_index = ::strtol (end+1, &real_end, 0); 874 bool expand_bitfield = true; 875 if (real_end && *real_end == ']') 876 { 877 // if the format given is [high-low], swap range 878 if (child_index > final_index) 879 { 880 long temp = child_index; 881 child_index = final_index; 882 final_index = temp; 883 } 884 885 if (ClangASTContext::IsPointerToScalarType(valobj_sp->GetClangType()) && deref) 886 { 887 // what we have is *ptr[low-high]. the most similar C++ syntax is to deref ptr 888 // and extract bits low thru high out of it. reading array items low thru high 889 // would be done by saying ptr[low-high], without a deref * sign 890 Error error; 891 ValueObjectSP temp(valobj_sp->Dereference(error)); 892 if (error.Fail()) 893 { 894 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 895 error.SetErrorStringWithFormat ("could not dereference \"(%s) %s\"", 896 valobj_sp->GetTypeName().AsCString("<invalid type>"), 897 var_expr_path_strm.GetString().c_str()); 898 return ValueObjectSP(); 899 } 900 valobj_sp = temp; 901 deref = false; 902 } 903 else if (ClangASTContext::IsArrayOfScalarType(valobj_sp->GetClangType()) && deref) 904 { 905 // what we have is *arr[low-high]. the most similar C++ syntax is to get arr[0] 906 // (an operation that is equivalent to deref-ing arr) 907 // and extract bits low thru high out of it. reading array items low thru high 908 // would be done by saying arr[low-high], without a deref * sign 909 Error error; 910 ValueObjectSP temp(valobj_sp->GetChildAtIndex (0, true)); 911 if (error.Fail()) 912 { 913 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 914 error.SetErrorStringWithFormat ("could not get item 0 for \"(%s) %s\"", 915 valobj_sp->GetTypeName().AsCString("<invalid type>"), 916 var_expr_path_strm.GetString().c_str()); 917 return ValueObjectSP(); 918 } 919 valobj_sp = temp; 920 deref = false; 921 } 922 /*else if (valobj_sp->IsArrayType() || valobj_sp->IsPointerType()) 923 { 924 child_valobj_sp = valobj_sp->GetSyntheticArrayRangeChild(child_index, final_index, true); 925 expand_bitfield = false; 926 if (!child_valobj_sp) 927 { 928 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 929 error.SetErrorStringWithFormat ("array range %i-%i is not valid for \"(%s) %s\"", 930 child_index, final_index, 931 valobj_sp->GetTypeName().AsCString("<invalid type>"), 932 var_expr_path_strm.GetString().c_str()); 933 } 934 }*/ 935 936 if (expand_bitfield) 937 { 938 child_valobj_sp = valobj_sp->GetSyntheticBitFieldChild(child_index, final_index, true); 939 if (!child_valobj_sp) 940 { 941 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 942 error.SetErrorStringWithFormat ("bitfield range %ld-%ld is not valid for \"(%s) %s\"", 943 child_index, final_index, 944 valobj_sp->GetTypeName().AsCString("<invalid type>"), 945 var_expr_path_strm.GetString().c_str()); 946 } 947 } 948 } 949 950 if (!child_valobj_sp) 951 { 952 // Invalid bitfield range... 953 return ValueObjectSP(); 954 } 955 956 // Erase the bitfield member specification '[%i-%i]' where 957 // %i is the index 958 var_path.erase(0, (real_end - var_path.c_str()) + 1); 959 separator_idx = var_path.find_first_of(".-["); 960 if (use_dynamic != eNoDynamicValues) 961 { 962 ValueObjectSP dynamic_value_sp(child_valobj_sp->GetDynamicValue(use_dynamic)); 963 if (dynamic_value_sp) 964 child_valobj_sp = dynamic_value_sp; 965 } 966 // Break out early from the switch since we were 967 // able to find the child member 968 break; 969 970 } 971 } 972 else 973 { 974 error.SetErrorStringWithFormat("invalid square bracket encountered after \"%s\" in \"%s\"", 975 var_expr_path_strm.GetString().c_str(), 976 var_path.c_str()); 977 } 978 return ValueObjectSP(); 979 980 default: 981 // Failure... 982 { 983 valobj_sp->GetExpressionPath (var_expr_path_strm, false); 984 error.SetErrorStringWithFormat ("unexpected char '%c' encountered after \"%s\" in \"%s\"", 985 separator_type, 986 var_expr_path_strm.GetString().c_str(), 987 var_path.c_str()); 988 989 return ValueObjectSP(); 990 } 991 } 992 993 if (child_valobj_sp) 994 valobj_sp = child_valobj_sp; 995 996 if (var_path.empty()) 997 break; 998 999 } 1000 if (valobj_sp) 1001 { 1002 if (deref) 1003 { 1004 ValueObjectSP deref_valobj_sp (valobj_sp->Dereference(error)); 1005 valobj_sp = deref_valobj_sp; 1006 } 1007 else if (address_of) 1008 { 1009 ValueObjectSP address_of_valobj_sp (valobj_sp->AddressOf(error)); 1010 valobj_sp = address_of_valobj_sp; 1011 } 1012 } 1013 return valobj_sp; 1014 } 1015 else 1016 { 1017 error.SetErrorStringWithFormat("no variable named '%s' found in this frame", 1018 name_const_string.GetCString()); 1019 } 1020 } 1021 } 1022 else 1023 { 1024 error.SetErrorStringWithFormat("invalid variable path '%s'", var_expr_cstr); 1025 } 1026 return ValueObjectSP(); 1027 } 1028 1029 bool 1030 StackFrame::GetFrameBaseValue (Scalar &frame_base, Error *error_ptr) 1031 { 1032 if (m_flags.IsClear(GOT_FRAME_BASE)) 1033 { 1034 if (m_sc.function) 1035 { 1036 m_frame_base.Clear(); 1037 m_frame_base_error.Clear(); 1038 1039 m_flags.Set(GOT_FRAME_BASE); 1040 ExecutionContext exe_ctx (shared_from_this()); 1041 Value expr_value; 1042 addr_t loclist_base_addr = LLDB_INVALID_ADDRESS; 1043 if (m_sc.function->GetFrameBaseExpression().IsLocationList()) 1044 loclist_base_addr = m_sc.function->GetAddressRange().GetBaseAddress().GetLoadAddress (exe_ctx.GetTargetPtr()); 1045 1046 if (m_sc.function->GetFrameBaseExpression().Evaluate(&exe_ctx, NULL, NULL, NULL, NULL, loclist_base_addr, NULL, expr_value, &m_frame_base_error) == false) 1047 { 1048 // We should really have an error if evaluate returns, but in case 1049 // we don't, lets set the error to something at least. 1050 if (m_frame_base_error.Success()) 1051 m_frame_base_error.SetErrorString("Evaluation of the frame base expression failed."); 1052 } 1053 else 1054 { 1055 m_frame_base = expr_value.ResolveValue(&exe_ctx, NULL); 1056 } 1057 } 1058 else 1059 { 1060 m_frame_base_error.SetErrorString ("No function in symbol context."); 1061 } 1062 } 1063 1064 if (m_frame_base_error.Success()) 1065 frame_base = m_frame_base; 1066 1067 if (error_ptr) 1068 *error_ptr = m_frame_base_error; 1069 return m_frame_base_error.Success(); 1070 } 1071 1072 RegisterContextSP 1073 StackFrame::GetRegisterContext () 1074 { 1075 if (!m_reg_context_sp) 1076 { 1077 ThreadSP thread_sp (GetThread()); 1078 if (thread_sp) 1079 m_reg_context_sp = thread_sp->CreateRegisterContextForFrame (this); 1080 } 1081 return m_reg_context_sp; 1082 } 1083 1084 bool 1085 StackFrame::HasDebugInformation () 1086 { 1087 GetSymbolContext (eSymbolContextLineEntry); 1088 return m_sc.line_entry.IsValid(); 1089 } 1090 1091 1092 ValueObjectSP 1093 StackFrame::GetValueObjectForFrameVariable (const VariableSP &variable_sp, DynamicValueType use_dynamic) 1094 { 1095 ValueObjectSP valobj_sp; 1096 VariableList *var_list = GetVariableList (true); 1097 if (var_list) 1098 { 1099 // Make sure the variable is a frame variable 1100 const uint32_t var_idx = var_list->FindIndexForVariable (variable_sp.get()); 1101 const uint32_t num_variables = var_list->GetSize(); 1102 if (var_idx < num_variables) 1103 { 1104 valobj_sp = m_variable_list_value_objects.GetValueObjectAtIndex (var_idx); 1105 if (valobj_sp.get() == NULL) 1106 { 1107 if (m_variable_list_value_objects.GetSize() < num_variables) 1108 m_variable_list_value_objects.Resize(num_variables); 1109 valobj_sp = ValueObjectVariable::Create (this, variable_sp); 1110 m_variable_list_value_objects.SetValueObjectAtIndex (var_idx, valobj_sp); 1111 } 1112 } 1113 } 1114 if (use_dynamic != eNoDynamicValues && valobj_sp) 1115 { 1116 ValueObjectSP dynamic_sp = valobj_sp->GetDynamicValue (use_dynamic); 1117 if (dynamic_sp) 1118 return dynamic_sp; 1119 } 1120 return valobj_sp; 1121 } 1122 1123 ValueObjectSP 1124 StackFrame::TrackGlobalVariable (const VariableSP &variable_sp, DynamicValueType use_dynamic) 1125 { 1126 // Check to make sure we aren't already tracking this variable? 1127 ValueObjectSP valobj_sp (GetValueObjectForFrameVariable (variable_sp, use_dynamic)); 1128 if (!valobj_sp) 1129 { 1130 // We aren't already tracking this global 1131 VariableList *var_list = GetVariableList (true); 1132 // If this frame has no variables, create a new list 1133 if (var_list == NULL) 1134 m_variable_list_sp.reset (new VariableList()); 1135 1136 // Add the global/static variable to this frame 1137 m_variable_list_sp->AddVariable (variable_sp); 1138 1139 // Now make a value object for it so we can track its changes 1140 valobj_sp = GetValueObjectForFrameVariable (variable_sp, use_dynamic); 1141 } 1142 return valobj_sp; 1143 } 1144 1145 bool 1146 StackFrame::IsInlined () 1147 { 1148 if (m_sc.block == NULL) 1149 GetSymbolContext (eSymbolContextBlock); 1150 if (m_sc.block) 1151 return m_sc.block->GetContainingInlinedBlock() != NULL; 1152 return false; 1153 } 1154 1155 TargetSP 1156 StackFrame::CalculateTarget () 1157 { 1158 TargetSP target_sp; 1159 ThreadSP thread_sp(GetThread()); 1160 if (thread_sp) 1161 { 1162 ProcessSP process_sp (thread_sp->CalculateProcess()); 1163 if (process_sp) 1164 target_sp = process_sp->CalculateTarget(); 1165 } 1166 return target_sp; 1167 } 1168 1169 ProcessSP 1170 StackFrame::CalculateProcess () 1171 { 1172 ProcessSP process_sp; 1173 ThreadSP thread_sp(GetThread()); 1174 if (thread_sp) 1175 process_sp = thread_sp->CalculateProcess(); 1176 return process_sp; 1177 } 1178 1179 ThreadSP 1180 StackFrame::CalculateThread () 1181 { 1182 return GetThread(); 1183 } 1184 1185 StackFrameSP 1186 StackFrame::CalculateStackFrame () 1187 { 1188 return shared_from_this(); 1189 } 1190 1191 1192 void 1193 StackFrame::CalculateExecutionContext (ExecutionContext &exe_ctx) 1194 { 1195 exe_ctx.SetContext (shared_from_this()); 1196 } 1197 1198 void 1199 StackFrame::DumpUsingSettingsFormat (Stream *strm) 1200 { 1201 if (strm == NULL) 1202 return; 1203 1204 GetSymbolContext(eSymbolContextEverything); 1205 ExecutionContext exe_ctx (shared_from_this()); 1206 const char *end = NULL; 1207 StreamString s; 1208 const char *frame_format = NULL; 1209 Target *target = exe_ctx.GetTargetPtr(); 1210 if (target) 1211 frame_format = target->GetDebugger().GetFrameFormat(); 1212 if (frame_format && Debugger::FormatPrompt (frame_format, &m_sc, &exe_ctx, NULL, s, &end)) 1213 { 1214 strm->Write(s.GetData(), s.GetSize()); 1215 } 1216 else 1217 { 1218 Dump (strm, true, false); 1219 strm->EOL(); 1220 } 1221 } 1222 1223 void 1224 StackFrame::Dump (Stream *strm, bool show_frame_index, bool show_fullpaths) 1225 { 1226 if (strm == NULL) 1227 return; 1228 1229 if (show_frame_index) 1230 strm->Printf("frame #%u: ", m_frame_index); 1231 ExecutionContext exe_ctx (shared_from_this()); 1232 Target *target = exe_ctx.GetTargetPtr(); 1233 strm->Printf("0x%0*llx ", 1234 target ? (target->GetArchitecture().GetAddressByteSize() * 2) : 16, 1235 GetFrameCodeAddress().GetLoadAddress(target)); 1236 GetSymbolContext(eSymbolContextEverything); 1237 const bool show_module = true; 1238 const bool show_inline = true; 1239 m_sc.DumpStopContext (strm, 1240 exe_ctx.GetBestExecutionContextScope(), 1241 GetFrameCodeAddress(), 1242 show_fullpaths, 1243 show_module, 1244 show_inline); 1245 } 1246 1247 void 1248 StackFrame::UpdateCurrentFrameFromPreviousFrame (StackFrame &prev_frame) 1249 { 1250 assert (GetStackID() == prev_frame.GetStackID()); // TODO: remove this after some testing 1251 m_variable_list_sp = prev_frame.m_variable_list_sp; 1252 m_variable_list_value_objects.Swap (prev_frame.m_variable_list_value_objects); 1253 if (!m_disassembly.GetString().empty()) 1254 m_disassembly.GetString().swap (m_disassembly.GetString()); 1255 } 1256 1257 1258 void 1259 StackFrame::UpdatePreviousFrameFromCurrentFrame (StackFrame &curr_frame) 1260 { 1261 assert (GetStackID() == curr_frame.GetStackID()); // TODO: remove this after some testing 1262 m_id.SetPC (curr_frame.m_id.GetPC()); // Update the Stack ID PC value 1263 assert (GetThread() == curr_frame.GetThread()); 1264 m_frame_index = curr_frame.m_frame_index; 1265 m_concrete_frame_index = curr_frame.m_concrete_frame_index; 1266 m_reg_context_sp = curr_frame.m_reg_context_sp; 1267 m_frame_code_addr = curr_frame.m_frame_code_addr; 1268 assert (m_sc.target_sp.get() == NULL || curr_frame.m_sc.target_sp.get() == NULL || m_sc.target_sp.get() == curr_frame.m_sc.target_sp.get()); 1269 assert (m_sc.module_sp.get() == NULL || curr_frame.m_sc.module_sp.get() == NULL || m_sc.module_sp.get() == curr_frame.m_sc.module_sp.get()); 1270 assert (m_sc.comp_unit == NULL || curr_frame.m_sc.comp_unit == NULL || m_sc.comp_unit == curr_frame.m_sc.comp_unit); 1271 assert (m_sc.function == NULL || curr_frame.m_sc.function == NULL || m_sc.function == curr_frame.m_sc.function); 1272 m_sc = curr_frame.m_sc; 1273 m_flags.Clear(GOT_FRAME_BASE | eSymbolContextEverything); 1274 m_flags.Set (m_sc.GetResolvedMask()); 1275 m_frame_base.Clear(); 1276 m_frame_base_error.Clear(); 1277 } 1278 1279 1280 bool 1281 StackFrame::HasCachedData () const 1282 { 1283 if (m_variable_list_sp.get()) 1284 return true; 1285 if (m_variable_list_value_objects.GetSize() > 0) 1286 return true; 1287 if (!m_disassembly.GetString().empty()) 1288 return true; 1289 return false; 1290 } 1291 1292 bool 1293 StackFrame::GetStatus (Stream& strm, 1294 bool show_frame_info, 1295 bool show_source, 1296 uint32_t source_lines_before, 1297 uint32_t source_lines_after) 1298 { 1299 if (show_frame_info) 1300 { 1301 strm.Indent(); 1302 DumpUsingSettingsFormat (&strm); 1303 } 1304 1305 if (show_source) 1306 { 1307 ExecutionContext exe_ctx (shared_from_this()); 1308 bool have_source = false; 1309 DebuggerInstanceSettings::StopDisassemblyType disasm_display = DebuggerInstanceSettings::eStopDisassemblyTypeNever; 1310 Target *target = exe_ctx.GetTargetPtr(); 1311 if (target && (source_lines_before || source_lines_after)) 1312 { 1313 GetSymbolContext(eSymbolContextCompUnit | eSymbolContextLineEntry); 1314 1315 if (m_sc.comp_unit && m_sc.line_entry.IsValid()) 1316 { 1317 if (target->GetSourceManager().DisplaySourceLinesWithLineNumbers (m_sc.line_entry.file, 1318 m_sc.line_entry.line, 1319 source_lines_before, 1320 source_lines_after, 1321 "->", 1322 &strm)) 1323 { 1324 have_source = true; 1325 } 1326 } 1327 disasm_display = target->GetDebugger().GetStopDisassemblyDisplay (); 1328 } 1329 1330 switch (disasm_display) 1331 { 1332 case DebuggerInstanceSettings::eStopDisassemblyTypeNever: 1333 break; 1334 1335 case DebuggerInstanceSettings::eStopDisassemblyTypeNoSource: 1336 if (have_source) 1337 break; 1338 // Fall through to next case 1339 case DebuggerInstanceSettings::eStopDisassemblyTypeAlways: 1340 if (target) 1341 { 1342 const uint32_t disasm_lines = target->GetDebugger().GetDisassemblyLineCount(); 1343 if (disasm_lines > 0) 1344 { 1345 const ArchSpec &target_arch = target->GetArchitecture(); 1346 AddressRange pc_range; 1347 pc_range.GetBaseAddress() = GetFrameCodeAddress(); 1348 pc_range.SetByteSize(disasm_lines * target_arch.GetMaximumOpcodeByteSize()); 1349 Disassembler::Disassemble (target->GetDebugger(), 1350 target_arch, 1351 NULL, 1352 exe_ctx, 1353 pc_range, 1354 disasm_lines, 1355 0, 1356 Disassembler::eOptionMarkPCAddress, 1357 strm); 1358 } 1359 } 1360 break; 1361 } 1362 } 1363 return true; 1364 } 1365 1366