// this code relies on the assumption that an Objective-C object always starts
// with an ISA at offset 0.
ObjCLanguageRuntime::ObjCISA
AppleObjCRuntimeV1::GetISA(ValueObject& valobj)
{
if (ClangASTType::GetMinimumLanguage(valobj.GetClangAST(),valobj.GetClangType()) != eLanguageTypeObjC)
return 0;
// if we get an invalid VO (which might still happen when playing around
// with pointers returned by the expression parser, don't consider this
// a valid ObjC object)
if (valobj.GetValue().GetContextType() == Value::eContextTypeInvalid)
return 0;
addr_t isa_pointer = valobj.GetPointerValue();
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
Process *process = exe_ctx.GetProcessPtr();
if (process)
{
uint8_t pointer_size = process->GetAddressByteSize();
Error error;
return process->ReadUnsignedIntegerFromMemory (isa_pointer,
pointer_size,
0,
error);
}
return 0;
}
bool
JavaLanguageRuntime::GetDynamicTypeAndAddress(ValueObject &in_value, lldb::DynamicValueType use_dynamic,
TypeAndOrName &class_type_or_name, Address &dynamic_address,
Value::ValueType &value_type)
{
class_type_or_name.Clear();
// null references don't have a dynamic type
if (in_value.IsNilReference())
return false;
ExecutionContext exe_ctx(in_value.GetExecutionContextRef());
Target *target = exe_ctx.GetTargetPtr();
if (!target)
return false;
ConstString linkage_name;
CompilerType in_type = in_value.GetCompilerType();
if (in_type.IsPossibleDynamicType(nullptr, false, false))
linkage_name = GetDynamicTypeId(&exe_ctx, target, in_value);
else
linkage_name = JavaASTContext::GetLinkageName(in_type);
if (!linkage_name)
return false;
class_type_or_name.SetName(in_type.GetNonReferenceType().GetTypeName());
SymbolContext sc;
TypeList class_types;
llvm::DenseSet<SymbolFile *> searched_symbol_files;
size_t num_matches = target->GetImages().FindTypes(sc, linkage_name,
true, // name_is_fully_qualified
UINT32_MAX, searched_symbol_files, class_types);
for (size_t i = 0; i < num_matches; ++i)
{
TypeSP type_sp = class_types.GetTypeAtIndex(i);
CompilerType compiler_type = type_sp->GetFullCompilerType();
if (compiler_type.GetMinimumLanguage() != eLanguageTypeJava)
continue;
if (compiler_type.GetCompleteType() && compiler_type.IsCompleteType())
{
class_type_or_name.SetTypeSP(type_sp);
Value &value = in_value.GetValue();
value_type = value.GetValueType();
dynamic_address.SetRawAddress(value.GetScalar().ULongLong(0));
return true;
}
}
return false;
}
bool
ValueObjectChild::UpdateValue ()
{
m_error.Clear();
SetValueIsValid (false);
ValueObject* parent = m_parent;
if (parent)
{
if (parent->UpdateValueIfNeeded(false))
{
m_value.SetClangType(GetClangType());
// Copy the parent scalar value and the scalar value type
m_value.GetScalar() = parent->GetValue().GetScalar();
Value::ValueType value_type = parent->GetValue().GetValueType();
m_value.SetValueType (value_type);
if (parent->GetClangType().IsPointerOrReferenceType ())
{
lldb::addr_t addr = parent->GetPointerValue ();
m_value.GetScalar() = addr;
if (addr == LLDB_INVALID_ADDRESS)
{
m_error.SetErrorString ("parent address is invalid.");
}
else if (addr == 0)
{
m_error.SetErrorString ("parent is NULL");
}
else
{
m_value.GetScalar() += m_byte_offset;
AddressType addr_type = parent->GetAddressTypeOfChildren();
switch (addr_type)
{
case eAddressTypeFile:
{
lldb::ProcessSP process_sp (GetProcessSP());
if (process_sp && process_sp->IsAlive() == true)
m_value.SetValueType (Value::eValueTypeLoadAddress);
else
m_value.SetValueType(Value::eValueTypeFileAddress);
}
break;
case eAddressTypeLoad:
m_value.SetValueType (Value::eValueTypeLoadAddress);
break;
case eAddressTypeHost:
m_value.SetValueType(Value::eValueTypeHostAddress);
break;
case eAddressTypeInvalid:
// TODO: does this make sense?
m_value.SetValueType(Value::eValueTypeScalar);
break;
}
}
}
else
{
switch (value_type)
{
case Value::eValueTypeLoadAddress:
case Value::eValueTypeFileAddress:
case Value::eValueTypeHostAddress:
{
lldb::addr_t addr = m_value.GetScalar().ULongLong(LLDB_INVALID_ADDRESS);
if (addr == LLDB_INVALID_ADDRESS)
{
m_error.SetErrorString ("parent address is invalid.");
}
else if (addr == 0)
{
m_error.SetErrorString ("parent is NULL");
}
else
{
// Set this object's scalar value to the address of its
// value by adding its byte offset to the parent address
m_value.GetScalar() += GetByteOffset();
}
}
break;
case Value::eValueTypeScalar:
// TODO: What if this is a register value? Do we try and
// extract the child value from within the parent data?
// Probably...
default:
m_error.SetErrorString ("parent has invalid value.");
break;
}
}
if (m_error.Success())
{
ExecutionContext exe_ctx (GetExecutionContextRef().Lock());
m_error = m_value.GetValueAsData (&exe_ctx, m_data, 0, GetModule().get());
}
}
else
{
m_error.SetErrorStringWithFormat("parent failed to evaluate: %s", parent->GetError().AsCString());
}
}
else
{
m_error.SetErrorString("ValueObjectChild has a NULL parent ValueObject.");
}
return m_error.Success();
}
