| //===-- ValueObjectMemory.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/Core/ValueObjectMemory.h" |
| |
| // C Includes |
| // C++ Includes |
| // Other libraries and framework includes |
| // Project includes |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/ValueObjectList.h" |
| #include "lldb/Core/Value.h" |
| #include "lldb/Core/ValueObject.h" |
| |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Symbol/SymbolContext.h" |
| #include "lldb/Symbol/Type.h" |
| #include "lldb/Symbol/Variable.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; |
| |
| ValueObjectSP |
| ValueObjectMemory::Create (ExecutionContextScope *exe_scope, |
| const char *name, |
| const Address &address, |
| lldb::TypeSP &type_sp) |
| { |
| return (new ValueObjectMemory (exe_scope, name, address, type_sp))->GetSP(); |
| } |
| |
| ValueObjectSP |
| ValueObjectMemory::Create (ExecutionContextScope *exe_scope, |
| const char *name, |
| const Address &address, |
| const ClangASTType &ast_type) |
| { |
| return (new ValueObjectMemory (exe_scope, name, address, ast_type))->GetSP(); |
| } |
| |
| ValueObjectMemory::ValueObjectMemory (ExecutionContextScope *exe_scope, |
| const char *name, |
| const Address &address, |
| lldb::TypeSP &type_sp) : |
| ValueObject(exe_scope), |
| m_address (address), |
| m_type_sp(type_sp), |
| m_clang_type() |
| { |
| // Do not attempt to construct one of these objects with no variable! |
| assert (m_type_sp.get() != NULL); |
| SetName (ConstString(name)); |
| m_value.SetContext(Value::eContextTypeLLDBType, m_type_sp.get()); |
| TargetSP target_sp (GetTargetSP()); |
| lldb::addr_t load_address = m_address.GetLoadAddress(target_sp.get()); |
| if (load_address != LLDB_INVALID_ADDRESS) |
| { |
| m_value.SetValueType(Value::eValueTypeLoadAddress); |
| m_value.GetScalar() = load_address; |
| } |
| else |
| { |
| lldb::addr_t file_address = m_address.GetFileAddress(); |
| if (file_address != LLDB_INVALID_ADDRESS) |
| { |
| m_value.SetValueType(Value::eValueTypeFileAddress); |
| m_value.GetScalar() = file_address; |
| } |
| else |
| { |
| m_value.GetScalar() = m_address.GetOffset(); |
| m_value.SetValueType (Value::eValueTypeScalar); |
| } |
| } |
| } |
| |
| ValueObjectMemory::ValueObjectMemory (ExecutionContextScope *exe_scope, |
| const char *name, |
| const Address &address, |
| const ClangASTType &ast_type) : |
| ValueObject(exe_scope), |
| m_address (address), |
| m_type_sp(), |
| m_clang_type(ast_type) |
| { |
| // Do not attempt to construct one of these objects with no variable! |
| assert (m_clang_type.GetASTContext()); |
| assert (m_clang_type.GetOpaqueQualType()); |
| |
| TargetSP target_sp (GetTargetSP()); |
| |
| SetName (ConstString(name)); |
| m_value.SetContext(Value::eContextTypeClangType, m_clang_type.GetOpaqueQualType()); |
| lldb::addr_t load_address = m_address.GetLoadAddress (target_sp.get()); |
| if (load_address != LLDB_INVALID_ADDRESS) |
| { |
| m_value.SetValueType(Value::eValueTypeLoadAddress); |
| m_value.GetScalar() = load_address; |
| } |
| else |
| { |
| lldb::addr_t file_address = m_address.GetFileAddress(); |
| if (file_address != LLDB_INVALID_ADDRESS) |
| { |
| m_value.SetValueType(Value::eValueTypeFileAddress); |
| m_value.GetScalar() = file_address; |
| } |
| else |
| { |
| m_value.GetScalar() = m_address.GetOffset(); |
| m_value.SetValueType (Value::eValueTypeScalar); |
| } |
| } |
| } |
| |
| ValueObjectMemory::~ValueObjectMemory() |
| { |
| } |
| |
| lldb::clang_type_t |
| ValueObjectMemory::GetClangTypeImpl () |
| { |
| if (m_type_sp) |
| return m_type_sp->GetClangForwardType(); |
| return m_clang_type.GetOpaqueQualType(); |
| } |
| |
| ConstString |
| ValueObjectMemory::GetTypeName() |
| { |
| if (m_type_sp) |
| return m_type_sp->GetName(); |
| return ClangASTType::GetConstTypeName (m_clang_type.GetOpaqueQualType()); |
| } |
| |
| uint32_t |
| ValueObjectMemory::CalculateNumChildren() |
| { |
| if (m_type_sp) |
| return m_type_sp->GetNumChildren(true); |
| const bool omit_empty_base_classes = true; |
| return ClangASTContext::GetNumChildren (m_clang_type.GetASTContext(), |
| m_clang_type.GetOpaqueQualType(), |
| omit_empty_base_classes); |
| } |
| |
| clang::ASTContext * |
| ValueObjectMemory::GetClangASTImpl () |
| { |
| if (m_type_sp) |
| return m_type_sp->GetClangAST(); |
| return m_clang_type.GetASTContext(); |
| } |
| |
| size_t |
| ValueObjectMemory::GetByteSize() |
| { |
| if (m_type_sp) |
| return m_type_sp->GetByteSize(); |
| return (m_clang_type.GetClangTypeBitWidth () + 7) / 8; |
| } |
| |
| lldb::ValueType |
| ValueObjectMemory::GetValueType() const |
| { |
| // RETHINK: Should this be inherited from somewhere? |
| return lldb::eValueTypeVariableGlobal; |
| } |
| |
| bool |
| ValueObjectMemory::UpdateValue () |
| { |
| SetValueIsValid (false); |
| m_error.Clear(); |
| |
| ExecutionContext exe_ctx (GetExecutionContextRef()); |
| |
| Target *target = exe_ctx.GetTargetPtr(); |
| if (target) |
| { |
| m_data.SetByteOrder(target->GetArchitecture().GetByteOrder()); |
| m_data.SetAddressByteSize(target->GetArchitecture().GetAddressByteSize()); |
| } |
| |
| Value old_value(m_value); |
| if (m_address.IsValid()) |
| { |
| Value::ValueType value_type = m_value.GetValueType(); |
| |
| switch (value_type) |
| { |
| default: |
| assert(!"Unhandled expression result value kind..."); |
| break; |
| |
| case Value::eValueTypeScalar: |
| // The variable value is in the Scalar value inside the m_value. |
| // We can point our m_data right to it. |
| m_error = m_value.GetValueAsData (&exe_ctx, GetClangAST(), m_data, 0, GetModule()); |
| break; |
| |
| case Value::eValueTypeFileAddress: |
| case Value::eValueTypeLoadAddress: |
| case Value::eValueTypeHostAddress: |
| // The DWARF expression result was an address in the inferior |
| // process. If this variable is an aggregate type, we just need |
| // the address as the main value as all child variable objects |
| // will rely upon this location and add an offset and then read |
| // their own values as needed. If this variable is a simple |
| // type, we read all data for it into m_data. |
| // Make sure this type has a value before we try and read it |
| |
| // If we have a file address, convert it to a load address if we can. |
| if (value_type == Value::eValueTypeFileAddress && exe_ctx.GetProcessPtr()) |
| { |
| lldb::addr_t load_addr = m_address.GetLoadAddress(target); |
| if (load_addr != LLDB_INVALID_ADDRESS) |
| { |
| m_value.SetValueType(Value::eValueTypeLoadAddress); |
| m_value.GetScalar() = load_addr; |
| } |
| } |
| |
| if (ClangASTContext::IsAggregateType (GetClangType())) |
| { |
| // this value object represents an aggregate type whose |
| // children have values, but this object does not. So we |
| // say we are changed if our location has changed. |
| SetValueDidChange (value_type != old_value.GetValueType() || m_value.GetScalar() != old_value.GetScalar()); |
| } |
| else |
| { |
| // Copy the Value and set the context to use our Variable |
| // so it can extract read its value into m_data appropriately |
| Value value(m_value); |
| if (m_type_sp) |
| value.SetContext(Value::eContextTypeLLDBType, m_type_sp.get()); |
| else |
| value.SetContext(Value::eContextTypeClangType, m_clang_type.GetOpaqueQualType()); |
| |
| m_error = value.GetValueAsData(&exe_ctx, GetClangAST(), m_data, 0, GetModule()); |
| } |
| break; |
| } |
| |
| SetValueIsValid (m_error.Success()); |
| } |
| return m_error.Success(); |
| } |
| |
| |
| |
| bool |
| ValueObjectMemory::IsInScope () |
| { |
| // FIXME: Maybe try to read the memory address, and if that works, then |
| // we are in scope? |
| return true; |
| } |
| |
| |
| Module * |
| ValueObjectMemory::GetModule() |
| { |
| return m_address.GetModulePtr(); |
| } |
| |
| |