| //===-- StackFrame.cpp ------------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "lldb/Target/StackFrame.h" |
| |
| // C Includes |
| // C++ Includes |
| // Other libraries and framework includes |
| // Project includes |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/Debugger.h" |
| #include "lldb/Core/Disassembler.h" |
| #include "lldb/Core/Value.h" |
| #include "lldb/Core/ValueObjectVariable.h" |
| #include "lldb/Core/ValueObjectConstResult.h" |
| #include "lldb/Symbol/Function.h" |
| #include "lldb/Symbol/VariableList.h" |
| #include "lldb/Target/ExecutionContext.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/RegisterContext.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/Thread.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| // The first bits in the flags are reserved for the SymbolContext::Scope bits |
| // so we know if we have tried to look up information in our internal symbol |
| // context (m_sc) already. |
| #define RESOLVED_FRAME_CODE_ADDR (uint32_t(eSymbolContextEverything + 1)) |
| #define RESOLVED_FRAME_ID_SYMBOL_SCOPE (RESOLVED_FRAME_CODE_ADDR << 1) |
| #define GOT_FRAME_BASE (RESOLVED_FRAME_ID_SYMBOL_SCOPE << 1) |
| #define RESOLVED_VARIABLES (GOT_FRAME_BASE << 1) |
| #define RESOLVED_GLOBAL_VARIABLES (RESOLVED_VARIABLES << 1) |
| |
| StackFrame::StackFrame |
| ( |
| lldb::user_id_t frame_idx, |
| lldb::user_id_t unwind_frame_index, |
| Thread &thread, |
| lldb::addr_t cfa, |
| lldb::addr_t pc, |
| const SymbolContext *sc_ptr |
| ) : |
| m_thread (thread), |
| m_frame_index (frame_idx), |
| m_concrete_frame_index (unwind_frame_index), |
| m_reg_context_sp (), |
| m_id (pc, cfa, NULL), |
| m_frame_code_addr (NULL, pc), |
| m_sc (), |
| m_flags (), |
| m_frame_base (), |
| m_frame_base_error (), |
| m_variable_list_sp (), |
| m_variable_list_value_objects (), |
| m_disassembly () |
| { |
| if (sc_ptr != NULL) |
| { |
| m_sc = *sc_ptr; |
| m_flags.Set(m_sc.GetResolvedMask ()); |
| } |
| } |
| |
| StackFrame::StackFrame |
| ( |
| lldb::user_id_t frame_idx, |
| lldb::user_id_t unwind_frame_index, |
| Thread &thread, |
| const RegisterContextSP ®_context_sp, |
| lldb::addr_t cfa, |
| lldb::addr_t pc, |
| const SymbolContext *sc_ptr |
| ) : |
| m_thread (thread), |
| m_frame_index (frame_idx), |
| m_concrete_frame_index (unwind_frame_index), |
| m_reg_context_sp (reg_context_sp), |
| m_id (pc, cfa, NULL), |
| m_frame_code_addr (NULL, pc), |
| m_sc (), |
| m_flags (), |
| m_frame_base (), |
| m_frame_base_error (), |
| m_variable_list_sp (), |
| m_variable_list_value_objects (), |
| m_disassembly () |
| { |
| if (sc_ptr != NULL) |
| { |
| m_sc = *sc_ptr; |
| m_flags.Set(m_sc.GetResolvedMask ()); |
| } |
| |
| if (reg_context_sp && !m_sc.target_sp) |
| { |
| m_sc.target_sp = reg_context_sp->GetThread().GetProcess().GetTarget().GetSP(); |
| m_flags.Set (eSymbolContextTarget); |
| } |
| } |
| |
| StackFrame::StackFrame |
| ( |
| lldb::user_id_t frame_idx, |
| lldb::user_id_t unwind_frame_index, |
| Thread &thread, |
| const RegisterContextSP ®_context_sp, |
| lldb::addr_t cfa, |
| const Address& pc_addr, |
| const SymbolContext *sc_ptr |
| ) : |
| m_thread (thread), |
| m_frame_index (frame_idx), |
| m_concrete_frame_index (unwind_frame_index), |
| m_reg_context_sp (reg_context_sp), |
| m_id (pc_addr.GetLoadAddress (&thread.GetProcess().GetTarget()), cfa, NULL), |
| m_frame_code_addr (pc_addr), |
| m_sc (), |
| m_flags (), |
| m_frame_base (), |
| m_frame_base_error (), |
| m_variable_list_sp (), |
| m_variable_list_value_objects (), |
| m_disassembly () |
| { |
| if (sc_ptr != NULL) |
| { |
| m_sc = *sc_ptr; |
| m_flags.Set(m_sc.GetResolvedMask ()); |
| } |
| |
| if (m_sc.target_sp.get() == NULL && reg_context_sp) |
| { |
| m_sc.target_sp = reg_context_sp->GetThread().GetProcess().GetTarget().GetSP(); |
| m_flags.Set (eSymbolContextTarget); |
| } |
| |
| Module *pc_module = pc_addr.GetModule(); |
| if (m_sc.module_sp.get() == NULL || m_sc.module_sp.get() != pc_module) |
| { |
| if (pc_module) |
| { |
| m_sc.module_sp = pc_module->GetSP(); |
| m_flags.Set (eSymbolContextModule); |
| } |
| else |
| { |
| m_sc.module_sp.reset(); |
| } |
| |
| } |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| StackFrame::~StackFrame() |
| { |
| } |
| |
| StackID& |
| StackFrame::GetStackID() |
| { |
| // Make sure we have resolved the StackID object's symbol context scope if |
| // we already haven't looked it up. |
| |
| if (m_flags.IsClear (RESOLVED_FRAME_ID_SYMBOL_SCOPE)) |
| { |
| if (m_id.GetSymbolContextScope ()) |
| { |
| // We already have a symbol context scope, we just don't have our |
| // flag bit set. |
| m_flags.Set (RESOLVED_FRAME_ID_SYMBOL_SCOPE); |
| } |
| else |
| { |
| // Calculate the frame block and use this for the stack ID symbol |
| // context scope if we have one. |
| SymbolContextScope *scope = GetFrameBlock (); |
| if (scope == NULL) |
| { |
| // We don't have a block, so use the symbol |
| if (m_flags.IsClear (eSymbolContextSymbol)) |
| GetSymbolContext (eSymbolContextSymbol); |
| |
| // It is ok if m_sc.symbol is NULL here |
| scope = m_sc.symbol; |
| } |
| // Set the symbol context scope (the accessor will set the |
| // RESOLVED_FRAME_ID_SYMBOL_SCOPE bit in m_flags). |
| SetSymbolContextScope (scope); |
| } |
| } |
| return m_id; |
| } |
| |
| void |
| StackFrame::SetSymbolContextScope (SymbolContextScope *symbol_scope) |
| { |
| m_flags.Set (RESOLVED_FRAME_ID_SYMBOL_SCOPE); |
| m_id.SetSymbolContextScope (symbol_scope); |
| } |
| |
| Address& |
| StackFrame::GetFrameCodeAddress() |
| { |
| if (m_flags.IsClear(RESOLVED_FRAME_CODE_ADDR) && !m_frame_code_addr.IsSectionOffset()) |
| { |
| m_flags.Set (RESOLVED_FRAME_CODE_ADDR); |
| |
| // Resolve the PC into a temporary address because if ResolveLoadAddress |
| // fails to resolve the address, it will clear the address object... |
| Address resolved_pc; |
| if (m_thread.GetProcess().GetTarget().GetSectionLoadList().ResolveLoadAddress(m_frame_code_addr.GetOffset(), resolved_pc)) |
| { |
| m_frame_code_addr = resolved_pc; |
| const Section *section = m_frame_code_addr.GetSection(); |
| if (section) |
| { |
| Module *module = section->GetModule(); |
| if (module) |
| { |
| m_sc.module_sp = module->GetSP(); |
| if (m_sc.module_sp) |
| m_flags.Set(eSymbolContextModule); |
| } |
| } |
| } |
| } |
| return m_frame_code_addr; |
| } |
| |
| void |
| StackFrame::ChangePC (addr_t pc) |
| { |
| m_frame_code_addr.SetOffset(pc); |
| m_frame_code_addr.SetSection(NULL); |
| m_sc.Clear(); |
| m_flags.Reset(0); |
| m_thread.ClearStackFrames (); |
| } |
| |
| const char * |
| StackFrame::Disassemble () |
| { |
| if (m_disassembly.GetSize() == 0) |
| { |
| ExecutionContext exe_ctx; |
| CalculateExecutionContext(exe_ctx); |
| Target &target = m_thread.GetProcess().GetTarget(); |
| Disassembler::Disassemble (target.GetDebugger(), |
| target.GetArchitecture(), |
| exe_ctx, |
| 0, |
| false, |
| m_disassembly); |
| if (m_disassembly.GetSize() == 0) |
| return NULL; |
| } |
| return m_disassembly.GetData(); |
| } |
| |
| Block * |
| StackFrame::GetFrameBlock () |
| { |
| if (m_sc.block == NULL && m_flags.IsClear (eSymbolContextBlock)) |
| GetSymbolContext (eSymbolContextBlock); |
| |
| if (m_sc.block) |
| { |
| Block *inline_block = m_sc.block->GetContainingInlinedBlock(); |
| if (inline_block) |
| { |
| // Use the block with the inlined function info |
| // as the frame block we want this frame to have only the variables |
| // for the inlined function and its non-inlined block child blocks. |
| return inline_block; |
| } |
| else |
| { |
| // This block is not contained withing any inlined function blocks |
| // with so we want to use the top most function block. |
| return &m_sc.function->GetBlock (false); |
| } |
| } |
| return NULL; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Get the symbol context if we already haven't done so by resolving the |
| // PC address as much as possible. This way when we pass around a |
| // StackFrame object, everyone will have as much information as |
| // possible and no one will ever have to look things up manually. |
| //---------------------------------------------------------------------- |
| const SymbolContext& |
| StackFrame::GetSymbolContext (uint32_t resolve_scope) |
| { |
| // Copy our internal symbol context into "sc". |
| if ((m_flags.Get() & resolve_scope) != resolve_scope) |
| { |
| // Resolve our PC to section offset if we haven't alreday done so |
| // and if we don't have a module. The resolved address section will |
| // contain the module to which it belongs |
| if (!m_sc.module_sp && m_flags.IsClear(RESOLVED_FRAME_CODE_ADDR)) |
| GetFrameCodeAddress(); |
| |
| // If this is not frame zero, then we need to subtract 1 from the PC |
| // value when doing address lookups since the PC will be on the |
| // instruction following the function call instruction... |
| |
| Address lookup_addr(GetFrameCodeAddress()); |
| if (m_frame_index > 0 && lookup_addr.IsValid()) |
| { |
| addr_t offset = lookup_addr.GetOffset(); |
| if (offset > 0) |
| lookup_addr.SetOffset(offset - 1); |
| } |
| |
| |
| uint32_t resolved = 0; |
| if (m_sc.module_sp) |
| { |
| // We have something in our stack frame symbol context, lets check |
| // if we haven't already tried to lookup one of those things. If we |
| // haven't then we will do the query. |
| |
| uint32_t actual_resolve_scope = 0; |
| |
| if (resolve_scope & eSymbolContextCompUnit) |
| { |
| if (m_flags.IsClear (eSymbolContextCompUnit)) |
| { |
| if (m_sc.comp_unit) |
| resolved |= eSymbolContextCompUnit; |
| else |
| actual_resolve_scope |= eSymbolContextCompUnit; |
| } |
| } |
| |
| if (resolve_scope & eSymbolContextFunction) |
| { |
| if (m_flags.IsClear (eSymbolContextFunction)) |
| { |
| if (m_sc.function) |
| resolved |= eSymbolContextFunction; |
| else |
| actual_resolve_scope |= eSymbolContextFunction; |
| } |
| } |
| |
| if (resolve_scope & eSymbolContextBlock) |
| { |
| if (m_flags.IsClear (eSymbolContextBlock)) |
| { |
| if (m_sc.block) |
| resolved |= eSymbolContextBlock; |
| else |
| actual_resolve_scope |= eSymbolContextBlock; |
| } |
| } |
| |
| if (resolve_scope & eSymbolContextSymbol) |
| { |
| if (m_flags.IsClear (eSymbolContextSymbol)) |
| { |
| if (m_sc.symbol) |
| resolved |= eSymbolContextSymbol; |
| else |
| actual_resolve_scope |= eSymbolContextSymbol; |
| } |
| } |
| |
| if (resolve_scope & eSymbolContextLineEntry) |
| { |
| if (m_flags.IsClear (eSymbolContextLineEntry)) |
| { |
| if (m_sc.line_entry.IsValid()) |
| resolved |= eSymbolContextLineEntry; |
| else |
| actual_resolve_scope |= eSymbolContextLineEntry; |
| } |
| } |
| |
| if (actual_resolve_scope) |
| { |
| // We might be resolving less information than what is already |
| // in our current symbol context so resolve into a temporary |
| // symbol context "sc" so we don't clear out data we have |
| // already found in "m_sc" |
| SymbolContext sc; |
| // Set flags that indicate what we have tried to resolve |
| resolved |= m_sc.module_sp->ResolveSymbolContextForAddress (lookup_addr, actual_resolve_scope, sc); |
| // Only replace what we didn't already have as we may have |
| // information for an inlined function scope that won't match |
| // what a standard lookup by address would match |
| if ((resolved & eSymbolContextCompUnit) && m_sc.comp_unit == NULL) |
| m_sc.comp_unit = sc.comp_unit; |
| if ((resolved & eSymbolContextFunction) && m_sc.function == NULL) |
| m_sc.function = sc.function; |
| if ((resolved & eSymbolContextBlock) && m_sc.block == NULL) |
| m_sc.block = sc.block; |
| if ((resolved & eSymbolContextSymbol) && m_sc.symbol == NULL) |
| m_sc.symbol = sc.symbol; |
| if ((resolved & eSymbolContextLineEntry) && !m_sc.line_entry.IsValid()) |
| m_sc.line_entry = sc.line_entry; |
| |
| } |
| } |
| else |
| { |
| // If we don't have a module, then we can't have the compile unit, |
| // function, block, line entry or symbol, so we can safely call |
| // ResolveSymbolContextForAddress with our symbol context member m_sc. |
| resolved |= m_thread.GetProcess().GetTarget().GetImages().ResolveSymbolContextForAddress (lookup_addr, resolve_scope, m_sc); |
| } |
| |
| // If the target was requested add that: |
| if (m_sc.target_sp.get() == NULL) |
| { |
| m_sc.target_sp = CalculateProcess()->GetTarget().GetSP(); |
| if (m_sc.target_sp) |
| resolved |= eSymbolContextTarget; |
| } |
| |
| // Update our internal flags so we remember what we have tried to locate so |
| // we don't have to keep trying when more calls to this function are made. |
| // We might have dug up more information that was requested (for example |
| // if we were asked to only get the block, we will have gotten the |
| // compile unit, and function) so set any additional bits that we resolved |
| m_flags.Set (resolve_scope | resolved); |
| } |
| |
| // Return the symbol context with everything that was possible to resolve |
| // resolved. |
| return m_sc; |
| } |
| |
| |
| VariableList * |
| StackFrame::GetVariableList (bool get_file_globals) |
| { |
| if (m_flags.IsClear(RESOLVED_VARIABLES)) |
| { |
| m_flags.Set(RESOLVED_VARIABLES); |
| |
| Block *frame_block = GetFrameBlock(); |
| |
| if (frame_block) |
| { |
| const bool get_child_variables = true; |
| const bool can_create = true; |
| m_variable_list_sp = frame_block->GetVariableList (get_child_variables, can_create); |
| } |
| } |
| |
| if (m_flags.IsClear(RESOLVED_GLOBAL_VARIABLES) && |
| get_file_globals) |
| { |
| m_flags.Set(RESOLVED_GLOBAL_VARIABLES); |
| |
| if (m_flags.IsClear (eSymbolContextCompUnit)) |
| GetSymbolContext (eSymbolContextCompUnit); |
| |
| if (m_sc.comp_unit) |
| { |
| VariableListSP global_variable_list_sp (m_sc.comp_unit->GetVariableList(true)); |
| if (m_variable_list_sp) |
| m_variable_list_sp->AddVariables (global_variable_list_sp.get()); |
| else |
| m_variable_list_sp = global_variable_list_sp; |
| } |
| } |
| |
| return m_variable_list_sp.get(); |
| } |
| |
| ValueObjectSP |
| StackFrame::GetValueForVariableExpressionPath (const char *var_expr_cstr, uint32_t options, Error &error) |
| { |
| |
| if (var_expr_cstr && var_expr_cstr[0]) |
| { |
| const bool check_ptr_vs_member = (options & eExpressionPathOptionCheckPtrVsMember) != 0; |
| const bool no_fragile_ivar = (options & eExpressionPathOptionsNoFragileObjcIvar) != 0; |
| error.Clear(); |
| bool deref = false; |
| bool address_of = false; |
| ValueObjectSP valobj_sp; |
| const bool get_file_globals = true; |
| VariableList *variable_list = GetVariableList (get_file_globals); |
| |
| if (variable_list) |
| { |
| // If first character is a '*', then show pointer contents |
| const char *var_expr = var_expr_cstr; |
| if (var_expr[0] == '*') |
| { |
| deref = true; |
| var_expr++; // Skip the '*' |
| } |
| else if (var_expr[0] == '&') |
| { |
| address_of = true; |
| var_expr++; // Skip the '&' |
| } |
| |
| std::string var_path (var_expr); |
| size_t separator_idx = var_path.find_first_of(".-[=+~|&^%#@!/?,<>{}"); |
| StreamString var_expr_path_strm; |
| |
| ConstString name_const_string; |
| if (separator_idx == std::string::npos) |
| name_const_string.SetCString (var_path.c_str()); |
| else |
| name_const_string.SetCStringWithLength (var_path.c_str(), separator_idx); |
| |
| VariableSP var_sp (variable_list->FindVariable(name_const_string)); |
| if (var_sp) |
| { |
| valobj_sp = GetValueObjectForFrameVariable (var_sp); |
| |
| var_path.erase (0, name_const_string.GetLength ()); |
| // We are dumping at least one child |
| while (separator_idx != std::string::npos) |
| { |
| // Calculate the next separator index ahead of time |
| ValueObjectSP child_valobj_sp; |
| const char separator_type = var_path[0]; |
| switch (separator_type) |
| { |
| |
| case '-': |
| if (var_path.size() >= 2 && var_path[1] != '>') |
| return ValueObjectSP(); |
| |
| if (no_fragile_ivar) |
| { |
| // Make sure we aren't trying to deref an objective |
| // C ivar if this is not allowed |
| const uint32_t pointer_type_flags = ClangASTContext::GetTypeInfo (valobj_sp->GetClangType(), NULL, NULL); |
| if ((pointer_type_flags & ClangASTContext::eTypeIsObjC) && |
| (pointer_type_flags & ClangASTContext::eTypeIsPointer)) |
| { |
| // This was an objective C object pointer and |
| // it was requested we skip any fragile ivars |
| // so return nothing here |
| return ValueObjectSP(); |
| } |
| } |
| var_path.erase (0, 1); // Remove the '-' |
| // Fall through |
| case '.': |
| { |
| const bool expr_is_ptr = var_path[0] == '>'; |
| |
| var_path.erase (0, 1); // Remove the '.' or '>' |
| separator_idx = var_path.find_first_of(".-["); |
| ConstString child_name; |
| if (separator_idx == std::string::npos) |
| child_name.SetCString (var_path.c_str()); |
| else |
| child_name.SetCStringWithLength(var_path.c_str(), separator_idx); |
| |
| if (check_ptr_vs_member) |
| { |
| // We either have a pointer type and need to verify |
| // valobj_sp is a pointer, or we have a member of a |
| // class/union/struct being accessed with the . syntax |
| // and need to verify we don't have a pointer. |
| const bool actual_is_ptr = valobj_sp->IsPointerType (); |
| |
| if (actual_is_ptr != expr_is_ptr) |
| { |
| // Incorrect use of "." with a pointer, or "->" with |
| // a class/union/struct instance or reference. |
| valobj_sp->GetExpressionPath (var_expr_path_strm, false); |
| if (actual_is_ptr) |
| error.SetErrorStringWithFormat ("\"%s\" is a pointer and . was used to attempt to access \"%s\". Did you mean \"%s->%s\"?", |
| var_expr_path_strm.GetString().c_str(), |
| child_name.GetCString(), |
| var_expr_path_strm.GetString().c_str(), |
| var_path.c_str()); |
| else |
| error.SetErrorStringWithFormat ("\"%s\" is not a pointer and -> was used to attempt to access \"%s\". Did you mean \"%s.%s\"?", |
| var_expr_path_strm.GetString().c_str(), |
| child_name.GetCString(), |
| var_expr_path_strm.GetString().c_str(), |
| var_path.c_str()); |
| return ValueObjectSP(); |
| } |
| } |
| |
| child_valobj_sp = valobj_sp->GetChildMemberWithName (child_name, true); |
| if (!child_valobj_sp) |
| { |
| // No child member with name "child_name" |
| valobj_sp->GetExpressionPath (var_expr_path_strm, false); |
| if (child_name) |
| { |
| error.SetErrorStringWithFormat ("\"%s\" is not a member of \"(%s) %s\"", |
| child_name.GetCString(), |
| valobj_sp->GetTypeName().AsCString("<invalid type>"), |
| var_expr_path_strm.GetString().c_str()); |
| } |
| else |
| { |
| error.SetErrorStringWithFormat ("incomplete expression path after \"%s\" in \"%s\"", |
| var_expr_path_strm.GetString().c_str(), |
| var_expr_cstr); |
| } |
| |
| return ValueObjectSP(); |
| } |
| // Remove the child name from the path |
| var_path.erase(0, child_name.GetLength()); |
| } |
| break; |
| |
| case '[': |
| // Array member access, or treating pointer as an array |
| if (var_path.size() > 2) // Need at least two brackets and a number |
| { |
| char *end = NULL; |
| long child_index = ::strtol (&var_path[1], &end, 0); |
| if (end && *end == ']') |
| { |
| |
| if (valobj_sp->IsPointerType ()) |
| { |
| child_valobj_sp = valobj_sp->GetSyntheticArrayMemberFromPointer (child_index, true); |
| if (!child_valobj_sp) |
| { |
| valobj_sp->GetExpressionPath (var_expr_path_strm, false); |
| error.SetErrorStringWithFormat ("failed to use pointer as array for index %i for \"(%s) %s\"", |
| child_index, |
| valobj_sp->GetTypeName().AsCString("<invalid type>"), |
| var_expr_path_strm.GetString().c_str()); |
| } |
| } |
| else if (ClangASTContext::IsArrayType (valobj_sp->GetClangType(), NULL, NULL)) |
| { |
| child_valobj_sp = valobj_sp->GetChildAtIndex (child_index, true); |
| if (!child_valobj_sp) |
| { |
| valobj_sp->GetExpressionPath (var_expr_path_strm, false); |
| error.SetErrorStringWithFormat ("array index %i is not valid for \"(%s) %s\"", |
| child_index, |
| valobj_sp->GetTypeName().AsCString("<invalid type>"), |
| var_expr_path_strm.GetString().c_str()); |
| } |
| } |
| else |
| { |
| valobj_sp->GetExpressionPath (var_expr_path_strm, false); |
| error.SetErrorStringWithFormat ("\"(%s) %s\" is not an array type", |
| valobj_sp->GetTypeName().AsCString("<invalid type>"), |
| var_expr_path_strm.GetString().c_str()); |
| } |
| |
| if (!child_valobj_sp) |
| { |
| // Invalid array index... |
| return ValueObjectSP(); |
| } |
| |
| // Erase the array member specification '[%i]' where |
| // %i is the array index |
| var_path.erase(0, (end - var_path.c_str()) + 1); |
| separator_idx = var_path.find_first_of(".-["); |
| |
| // Break out early from the switch since we were |
| // able to find the child member |
| break; |
| } |
| } |
| return ValueObjectSP(); |
| |
| default: |
| // Failure... |
| { |
| valobj_sp->GetExpressionPath (var_expr_path_strm, false); |
| error.SetErrorStringWithFormat ("unexpected char '%c' encountered after \"%s\" in \"%s\"", |
| separator_type, |
| var_expr_path_strm.GetString().c_str(), |
| var_path.c_str()); |
| |
| return ValueObjectSP(); |
| } |
| } |
| |
| if (child_valobj_sp) |
| valobj_sp = child_valobj_sp; |
| |
| if (var_path.empty()) |
| break; |
| |
| } |
| if (valobj_sp) |
| { |
| if (deref) |
| { |
| ValueObjectSP deref_valobj_sp (valobj_sp->Dereference(error)); |
| valobj_sp = deref_valobj_sp; |
| } |
| else if (address_of) |
| { |
| ValueObjectSP address_of_valobj_sp (valobj_sp->AddressOf(error)); |
| valobj_sp = address_of_valobj_sp; |
| } |
| } |
| return valobj_sp; |
| } |
| else |
| { |
| error.SetErrorStringWithFormat("no variable named '%s' found in this frame", name_const_string.GetCString()); |
| } |
| } |
| } |
| else |
| { |
| error.SetErrorStringWithFormat("invalid variable path '%s'", var_expr_cstr); |
| } |
| return ValueObjectSP(); |
| } |
| |
| bool |
| StackFrame::GetFrameBaseValue (Scalar &frame_base, Error *error_ptr) |
| { |
| if (m_flags.IsClear(GOT_FRAME_BASE)) |
| { |
| if (m_sc.function) |
| { |
| m_frame_base.Clear(); |
| m_frame_base_error.Clear(); |
| |
| m_flags.Set(GOT_FRAME_BASE); |
| ExecutionContext exe_ctx (&m_thread.GetProcess(), &m_thread, this); |
| Value expr_value; |
| addr_t loclist_base_addr = LLDB_INVALID_ADDRESS; |
| if (m_sc.function->GetFrameBaseExpression().IsLocationList()) |
| loclist_base_addr = m_sc.function->GetAddressRange().GetBaseAddress().GetLoadAddress (&m_thread.GetProcess().GetTarget()); |
| |
| if (m_sc.function->GetFrameBaseExpression().Evaluate(&exe_ctx, NULL, NULL, NULL, NULL, loclist_base_addr, NULL, expr_value, &m_frame_base_error) == false) |
| { |
| // We should really have an error if evaluate returns, but in case |
| // we don't, lets set the error to something at least. |
| if (m_frame_base_error.Success()) |
| m_frame_base_error.SetErrorString("Evaluation of the frame base expression failed."); |
| } |
| else |
| { |
| m_frame_base = expr_value.ResolveValue(&exe_ctx, NULL); |
| } |
| } |
| else |
| { |
| m_frame_base_error.SetErrorString ("No function in symbol context."); |
| } |
| } |
| |
| if (m_frame_base_error.Success()) |
| frame_base = m_frame_base; |
| |
| if (error_ptr) |
| *error_ptr = m_frame_base_error; |
| return m_frame_base_error.Success(); |
| } |
| |
| RegisterContextSP |
| StackFrame::GetRegisterContext () |
| { |
| if (!m_reg_context_sp) |
| m_reg_context_sp = m_thread.CreateRegisterContextForFrame (this); |
| return m_reg_context_sp; |
| } |
| |
| bool |
| StackFrame::HasDebugInformation () |
| { |
| GetSymbolContext (eSymbolContextLineEntry); |
| return m_sc.line_entry.IsValid(); |
| } |
| |
| |
| ValueObjectSP |
| StackFrame::GetValueObjectForFrameVariable (const VariableSP &variable_sp) |
| { |
| ValueObjectSP valobj_sp; |
| VariableList *var_list = GetVariableList (true); |
| if (var_list) |
| { |
| // Make sure the variable is a frame variable |
| const uint32_t var_idx = var_list->FindIndexForVariable (variable_sp.get()); |
| const uint32_t num_variables = var_list->GetSize(); |
| if (var_idx < num_variables) |
| { |
| valobj_sp = m_variable_list_value_objects.GetValueObjectAtIndex (var_idx); |
| if (valobj_sp.get() == NULL) |
| { |
| if (m_variable_list_value_objects.GetSize() < num_variables) |
| m_variable_list_value_objects.Resize(num_variables); |
| valobj_sp.reset (new ValueObjectVariable (variable_sp)); |
| m_variable_list_value_objects.SetValueObjectAtIndex (var_idx, valobj_sp); |
| } |
| } |
| } |
| return valobj_sp; |
| } |
| |
| ValueObjectSP |
| StackFrame::TrackGlobalVariable (const VariableSP &variable_sp) |
| { |
| // Check to make sure we aren't already tracking this variable? |
| ValueObjectSP valobj_sp (GetValueObjectForFrameVariable (variable_sp)); |
| if (!valobj_sp) |
| { |
| // We aren't already tracking this global |
| VariableList *var_list = GetVariableList (true); |
| // If this frame has no variables, create a new list |
| if (var_list == NULL) |
| m_variable_list_sp.reset (new VariableList()); |
| |
| // Add the global/static variable to this frame |
| m_variable_list_sp->AddVariable (variable_sp); |
| |
| // Now make a value object for it so we can track its changes |
| valobj_sp = GetValueObjectForFrameVariable (variable_sp); |
| } |
| return valobj_sp; |
| } |
| |
| bool |
| StackFrame::IsInlined () |
| { |
| if (m_sc.block == NULL) |
| GetSymbolContext (eSymbolContextBlock); |
| if (m_sc.block) |
| return m_sc.block->GetContainingInlinedBlock() != NULL; |
| return false; |
| } |
| |
| Target * |
| StackFrame::CalculateTarget () |
| { |
| return m_thread.CalculateTarget(); |
| } |
| |
| Process * |
| StackFrame::CalculateProcess () |
| { |
| return m_thread.CalculateProcess(); |
| } |
| |
| Thread * |
| StackFrame::CalculateThread () |
| { |
| return &m_thread; |
| } |
| |
| StackFrame * |
| StackFrame::CalculateStackFrame () |
| { |
| return this; |
| } |
| |
| |
| void |
| StackFrame::CalculateExecutionContext (ExecutionContext &exe_ctx) |
| { |
| m_thread.CalculateExecutionContext (exe_ctx); |
| exe_ctx.frame = this; |
| } |
| |
| void |
| StackFrame::DumpUsingSettingsFormat (Stream *strm) |
| { |
| if (strm == NULL) |
| return; |
| |
| GetSymbolContext(eSymbolContextEverything); |
| ExecutionContext exe_ctx; |
| CalculateExecutionContext(exe_ctx); |
| const char *end = NULL; |
| StreamString s; |
| const char *frame_format = m_thread.GetProcess().GetTarget().GetDebugger().GetFrameFormat(); |
| if (frame_format && Debugger::FormatPrompt (frame_format, &m_sc, &exe_ctx, NULL, s, &end)) |
| { |
| strm->Write(s.GetData(), s.GetSize()); |
| } |
| else |
| { |
| Dump (strm, true, false); |
| strm->EOL(); |
| } |
| } |
| |
| void |
| StackFrame::Dump (Stream *strm, bool show_frame_index, bool show_fullpaths) |
| { |
| if (strm == NULL) |
| return; |
| |
| if (show_frame_index) |
| strm->Printf("frame #%u: ", m_frame_index); |
| strm->Printf("0x%0*llx ", m_thread.GetProcess().GetTarget().GetArchitecture().GetAddressByteSize() * 2, GetFrameCodeAddress().GetLoadAddress(&m_thread.GetProcess().GetTarget())); |
| GetSymbolContext(eSymbolContextEverything); |
| const bool show_module = true; |
| const bool show_inline = true; |
| m_sc.DumpStopContext(strm, &m_thread.GetProcess(), GetFrameCodeAddress(), show_fullpaths, show_module, show_inline); |
| } |
| |
| void |
| StackFrame::UpdateCurrentFrameFromPreviousFrame (StackFrame &prev_frame) |
| { |
| assert (GetStackID() == prev_frame.GetStackID()); // TODO: remove this after some testing |
| m_variable_list_sp = prev_frame.m_variable_list_sp; |
| m_variable_list_value_objects.Swap (prev_frame.m_variable_list_value_objects); |
| if (!m_disassembly.GetString().empty()) |
| m_disassembly.GetString().swap (m_disassembly.GetString()); |
| } |
| |
| |
| void |
| StackFrame::UpdatePreviousFrameFromCurrentFrame (StackFrame &curr_frame) |
| { |
| assert (GetStackID() == curr_frame.GetStackID()); // TODO: remove this after some testing |
| m_id.SetPC (curr_frame.m_id.GetPC()); // Update the Stack ID PC value |
| assert (&m_thread == &curr_frame.m_thread); |
| m_frame_index = curr_frame.m_frame_index; |
| m_concrete_frame_index = curr_frame.m_concrete_frame_index; |
| m_reg_context_sp = curr_frame.m_reg_context_sp; |
| m_frame_code_addr = curr_frame.m_frame_code_addr; |
| 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()); |
| 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()); |
| assert (m_sc.comp_unit == NULL || curr_frame.m_sc.comp_unit == NULL || m_sc.comp_unit == curr_frame.m_sc.comp_unit); |
| assert (m_sc.function == NULL || curr_frame.m_sc.function == NULL || m_sc.function == curr_frame.m_sc.function); |
| m_sc = curr_frame.m_sc; |
| m_flags.Clear(GOT_FRAME_BASE | eSymbolContextEverything); |
| m_flags.Set (m_sc.GetResolvedMask()); |
| m_frame_base.Clear(); |
| m_frame_base_error.Clear(); |
| } |
| |
| |
| bool |
| StackFrame::HasCachedData () const |
| { |
| if (m_variable_list_sp.get()) |
| return true; |
| if (m_variable_list_value_objects.GetSize() > 0) |
| return true; |
| if (!m_disassembly.GetString().empty()) |
| return true; |
| return false; |
| } |
| |
| lldb::StackFrameSP |
| StackFrame::GetSP () |
| { |
| return m_thread.GetStackFrameSPForStackFramePtr (this); |
| } |
