bool lldb_private::formatters::CXXFunctionPointerSummaryProvider(
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
std::string destination;
StreamString sstr;
AddressType func_ptr_address_type = eAddressTypeInvalid;
addr_t func_ptr_address = valobj.GetPointerValue(&func_ptr_address_type);
if (func_ptr_address != 0 && func_ptr_address != LLDB_INVALID_ADDRESS) {
switch (func_ptr_address_type) {
case eAddressTypeInvalid:
case eAddressTypeFile:
case eAddressTypeHost:
break;
case eAddressTypeLoad: {
ExecutionContext exe_ctx(valobj.GetExecutionContextRef());
Address so_addr;
Target *target = exe_ctx.GetTargetPtr();
if (target && target->GetSectionLoadList().IsEmpty() == false) {
if (target->GetSectionLoadList().ResolveLoadAddress(func_ptr_address,
so_addr)) {
so_addr.Dump(&sstr, exe_ctx.GetBestExecutionContextScope(),
Address::DumpStyleResolvedDescription,
Address::DumpStyleSectionNameOffset);
}
}
} break;
}
}
if (sstr.GetSize() > 0) {
stream.Printf("(%s)", sstr.GetData());
return true;
} else
return false;
}
bool
lldb_private::formatters::ExtractSummaryFromObjCExpression (ValueObject &valobj,
const char* target_type,
const char* selector,
Stream &stream)
{
if (!target_type || !*target_type)
return false;
if (!selector || !*selector)
return false;
StreamString expr;
expr.Printf("(%s)[(id)0x%" PRIx64 " %s]",target_type,valobj.GetPointerValue(),selector);
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
lldb::ValueObjectSP result_sp;
Target* target = exe_ctx.GetTargetPtr();
StackFrame* stack_frame = GetViableFrame(exe_ctx);
if (!target || !stack_frame)
return false;
EvaluateExpressionOptions options;
options.SetCoerceToId(false);
options.SetUnwindOnError(true);
options.SetKeepInMemory(true);
options.SetUseDynamic(lldb::eDynamicCanRunTarget);
target->EvaluateExpression(expr.GetData(),
stack_frame,
result_sp,
options);
if (!result_sp)
return false;
stream.Printf("%s",result_sp->GetSummaryAsCString());
return true;
}
bool
lldb_private::formatters::ExtractValueFromObjCExpression (ValueObject &valobj,
const char* target_type,
const char* selector,
uint64_t &value)
{
if (!target_type || !*target_type)
return false;
if (!selector || !*selector)
return false;
StreamString expr;
expr.Printf("(%s)[(id)0x%" PRIx64 " %s]",target_type,valobj.GetPointerValue(),selector);
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
lldb::ValueObjectSP result_sp;
Target* target = exe_ctx.GetTargetPtr();
StackFrame* stack_frame = exe_ctx.GetFramePtr();
if (!target || !stack_frame)
return false;
EvaluateExpressionOptions options;
options.SetCoerceToId(false)
.SetUnwindOnError(true)
.SetKeepInMemory(true);
target->EvaluateExpression(expr.GetData(),
stack_frame,
result_sp,
options);
if (!result_sp)
return false;
value = result_sp->GetValueAsUnsigned(0);
return true;
}
// 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;
}
// for V1 runtime we just try to return a class name as that is the minimum level of support
// required for the data formatters to work
bool
AppleObjCRuntimeV1::GetDynamicTypeAndAddress (ValueObject &in_value,
lldb::DynamicValueType use_dynamic,
TypeAndOrName &class_type_or_name,
Address &address)
{
class_type_or_name.Clear();
if (CouldHaveDynamicValue(in_value))
{
auto class_descriptor(GetClassDescriptor(in_value));
if (class_descriptor && class_descriptor->IsValid() && class_descriptor->GetClassName())
{
const addr_t object_ptr = in_value.GetPointerValue();
address.SetRawAddress(object_ptr);
class_type_or_name.SetName(class_descriptor->GetClassName());
}
}
return class_type_or_name.IsEmpty() == false;
}
ObjCLanguageRuntime::ClassDescriptorSP
ObjCLanguageRuntime::GetClassDescriptor(ValueObject &valobj) {
ClassDescriptorSP objc_class_sp;
// 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.GetCompilerType().IsValid()) {
addr_t isa_pointer = valobj.GetPointerValue();
if (isa_pointer != LLDB_INVALID_ADDRESS) {
ExecutionContext exe_ctx(valobj.GetExecutionContextRef());
Process *process = exe_ctx.GetProcessPtr();
if (process) {
Error error;
ObjCISA isa = process->ReadPointerFromMemory(isa_pointer, error);
if (isa != LLDB_INVALID_ADDRESS)
objc_class_sp = GetClassDescriptorFromISA(isa);
}
}
}
return objc_class_sp;
}
bool
lldb_private::formatters::CFBagSummaryProvider (ValueObject& valobj, Stream& stream)
{
ProcessSP process_sp = valobj.GetProcessSP();
if (!process_sp)
return false;
ObjCLanguageRuntime* runtime = (ObjCLanguageRuntime*)process_sp->GetLanguageRuntime(lldb::eLanguageTypeObjC);
if (!runtime)
return false;
ObjCLanguageRuntime::ClassDescriptorSP descriptor(runtime->GetClassDescriptor(valobj));
if (!descriptor.get() || !descriptor->IsValid())
return false;
uint32_t ptr_size = process_sp->GetAddressByteSize();
lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
if (!valobj_addr)
return false;
uint32_t count = 0;
bool is_type_ok = false; // check to see if this is a CFBag we know about
if (descriptor->IsCFType())
{
ConstString type_name(valobj.GetTypeName());
if (type_name == ConstString("__CFBag") || type_name == ConstString("const struct __CFBag"))
{
if (valobj.IsPointerType())
is_type_ok = true;
}
}
if (is_type_ok == false)
{
StackFrameSP frame_sp(valobj.GetFrameSP());
if (!frame_sp)
return false;
ValueObjectSP count_sp;
StreamString expr;
expr.Printf("(int)CFBagGetCount((void*)0x%" PRIx64 ")",valobj.GetPointerValue());
if (process_sp->GetTarget().EvaluateExpression(expr.GetData(), frame_sp.get(), count_sp) != eExecutionCompleted)
return false;
if (!count_sp)
return false;
count = count_sp->GetValueAsUnsigned(0);
}
else
{
uint32_t offset = 2*ptr_size+4 + valobj_addr;
Error error;
count = process_sp->ReadUnsignedIntegerFromMemory(offset, 4, 0, error);
if (error.Fail())
return false;
}
stream.Printf("@\"%u value%s\"",
count,(count == 1 ? "" : "s"));
return true;
}
bool ItaniumABILanguageRuntime::GetDynamicTypeAndAddress(
ValueObject &in_value, lldb::DynamicValueType use_dynamic,
TypeAndOrName &class_type_or_name, Address &dynamic_address,
Value::ValueType &value_type) {
// For Itanium, if the type has a vtable pointer in the object, it will be at
// offset 0
// in the object. That will point to the "address point" within the vtable
// (not the beginning of the
// vtable.) We can then look up the symbol containing this "address point"
// and that symbol's name
// demangled will contain the full class name.
// The second pointer above the "address point" is the "offset_to_top". We'll
// use that to get the
// start of the value object which holds the dynamic type.
//
class_type_or_name.Clear();
value_type = Value::ValueType::eValueTypeScalar;
// Only a pointer or reference type can have a different dynamic and static
// type:
if (CouldHaveDynamicValue(in_value)) {
// First job, pull out the address at 0 offset from the object.
AddressType address_type;
lldb::addr_t original_ptr = in_value.GetPointerValue(&address_type);
if (original_ptr == LLDB_INVALID_ADDRESS)
return false;
ExecutionContext exe_ctx(in_value.GetExecutionContextRef());
Process *process = exe_ctx.GetProcessPtr();
if (process == nullptr)
return false;
Error error;
const lldb::addr_t vtable_address_point =
process->ReadPointerFromMemory(original_ptr, error);
if (!error.Success() || vtable_address_point == LLDB_INVALID_ADDRESS) {
return false;
}
class_type_or_name = GetTypeInfoFromVTableAddress(in_value, original_ptr,
vtable_address_point);
if (class_type_or_name) {
TypeSP type_sp = class_type_or_name.GetTypeSP();
// There can only be one type with a given name,
// so we've just found duplicate definitions, and this
// one will do as well as any other.
// We don't consider something to have a dynamic type if
// it is the same as the static type. So compare against
// the value we were handed.
if (type_sp) {
if (ClangASTContext::AreTypesSame(in_value.GetCompilerType(),
type_sp->GetForwardCompilerType())) {
// The dynamic type we found was the same type,
// so we don't have a dynamic type here...
return false;
}
// The offset_to_top is two pointers above the vtable pointer.
const uint32_t addr_byte_size = process->GetAddressByteSize();
const lldb::addr_t offset_to_top_location =
vtable_address_point - 2 * addr_byte_size;
// Watch for underflow, offset_to_top_location should be less than
// vtable_address_point
if (offset_to_top_location >= vtable_address_point)
return false;
const int64_t offset_to_top = process->ReadSignedIntegerFromMemory(
offset_to_top_location, addr_byte_size, INT64_MIN, error);
if (offset_to_top == INT64_MIN)
return false;
// So the dynamic type is a value that starts at offset_to_top
// above the original address.
lldb::addr_t dynamic_addr = original_ptr + offset_to_top;
if (!process->GetTarget().GetSectionLoadList().ResolveLoadAddress(
dynamic_addr, dynamic_address)) {
dynamic_address.SetRawAddress(dynamic_addr);
}
return true;
}
}
}
return class_type_or_name.IsEmpty() == false;
}
bool
ItaniumABILanguageRuntime::GetDynamicTypeAndAddress (ValueObject &in_value,
lldb::DynamicValueType use_dynamic,
TypeAndOrName &class_type_or_name,
Address &dynamic_address)
{
// For Itanium, if the type has a vtable pointer in the object, it will be at offset 0
// in the object. That will point to the "address point" within the vtable (not the beginning of the
// vtable.) We can then look up the symbol containing this "address point" and that symbol's name
// demangled will contain the full class name.
// The second pointer above the "address point" is the "offset_to_top". We'll use that to get the
// start of the value object which holds the dynamic type.
//
class_type_or_name.Clear();
// Only a pointer or reference type can have a different dynamic and static type:
if (CouldHaveDynamicValue (in_value))
{
// First job, pull out the address at 0 offset from the object.
AddressType address_type;
lldb::addr_t original_ptr = in_value.GetPointerValue(&address_type);
if (original_ptr == LLDB_INVALID_ADDRESS)
return false;
ExecutionContext exe_ctx (in_value.GetExecutionContextRef());
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
char memory_buffer[16];
DataExtractor data(memory_buffer, sizeof(memory_buffer),
process->GetByteOrder(),
process->GetAddressByteSize());
size_t address_byte_size = process->GetAddressByteSize();
Error error;
size_t bytes_read = process->ReadMemory (original_ptr,
memory_buffer,
address_byte_size,
error);
if (!error.Success() || (bytes_read != address_byte_size))
{
return false;
}
lldb::offset_t offset = 0;
lldb::addr_t vtable_address_point = data.GetAddress (&offset);
if (offset == 0)
return false;
// Now find the symbol that contains this address:
SymbolContext sc;
Address address_point_address;
if (target && !target->GetSectionLoadList().IsEmpty())
{
if (target->GetSectionLoadList().ResolveLoadAddress (vtable_address_point, address_point_address))
{
target->GetImages().ResolveSymbolContextForAddress (address_point_address, eSymbolContextSymbol, sc);
Symbol *symbol = sc.symbol;
if (symbol != NULL)
{
const char *name = symbol->GetMangled().GetDemangledName().AsCString();
if (strstr(name, vtable_demangled_prefix) == name)
{
Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT));
if (log)
log->Printf ("0x%16.16" PRIx64 ": static-type = '%s' has vtable symbol '%s'\n",
original_ptr,
in_value.GetTypeName().GetCString(),
name);
// We are a C++ class, that's good. Get the class name and look it up:
const char *class_name = name + strlen(vtable_demangled_prefix);
class_type_or_name.SetName (class_name);
const bool exact_match = true;
TypeList class_types;
uint32_t num_matches = 0;
// First look in the module that the vtable symbol came from
// and look for a single exact match.
if (sc.module_sp)
{
num_matches = sc.module_sp->FindTypes (sc,
ConstString(class_name),
exact_match,
1,
class_types);
}
// If we didn't find a symbol, then move on to the entire
// module list in the target and get as many unique matches
// as possible
if (num_matches == 0)
{
num_matches = target->GetImages().FindTypes (sc,
ConstString(class_name),
exact_match,
UINT32_MAX,
class_types);
}
lldb::TypeSP type_sp;
if (num_matches == 0)
{
if (log)
log->Printf("0x%16.16" PRIx64 ": is not dynamic\n", original_ptr);
return false;
}
if (num_matches == 1)
{
type_sp = class_types.GetTypeAtIndex(0);
if (log)
log->Printf ("0x%16.16" PRIx64 ": static-type = '%s' has dynamic type: uid={0x%" PRIx64 "}, type-name='%s'\n",
original_ptr,
in_value.GetTypeName().AsCString(),
type_sp->GetID(),
type_sp->GetName().GetCString());
class_type_or_name.SetTypeSP(class_types.GetTypeAtIndex(0));
}
else if (num_matches > 1)
{
size_t i;
if (log)
{
for (i = 0; i < num_matches; i++)
{
type_sp = class_types.GetTypeAtIndex(i);
if (type_sp)
{
if (log)
log->Printf ("0x%16.16" PRIx64 ": static-type = '%s' has multiple matching dynamic types: uid={0x%" PRIx64 "}, type-name='%s'\n",
original_ptr,
in_value.GetTypeName().AsCString(),
type_sp->GetID(),
type_sp->GetName().GetCString());
}
}
}
for (i = 0; i < num_matches; i++)
{
type_sp = class_types.GetTypeAtIndex(i);
if (type_sp)
{
if (type_sp->GetClangFullType().IsCXXClassType())
{
if (log)
log->Printf ("0x%16.16" PRIx64 ": static-type = '%s' has multiple matching dynamic types, picking this one: uid={0x%" PRIx64 "}, type-name='%s'\n",
original_ptr,
in_value.GetTypeName().AsCString(),
type_sp->GetID(),
type_sp->GetName().GetCString());
class_type_or_name.SetTypeSP(type_sp);
break;
}
}
}
if (i == num_matches)
{
if (log)
log->Printf ("0x%16.16" PRIx64 ": static-type = '%s' has multiple matching dynamic types, didn't find a C++ match\n",
original_ptr,
in_value.GetTypeName().AsCString());
return false;
}
}
// There can only be one type with a given name,
// so we've just found duplicate definitions, and this
// one will do as well as any other.
// We don't consider something to have a dynamic type if
// it is the same as the static type. So compare against
// the value we were handed.
if (type_sp)
{
if (ClangASTContext::AreTypesSame (in_value.GetClangType(),
type_sp->GetClangFullType()))
{
// The dynamic type we found was the same type,
// so we don't have a dynamic type here...
return false;
}
// The offset_to_top is two pointers above the address.
Address offset_to_top_address = address_point_address;
int64_t slide = -2 * ((int64_t) target->GetArchitecture().GetAddressByteSize());
offset_to_top_address.Slide (slide);
Error error;
lldb::addr_t offset_to_top_location = offset_to_top_address.GetLoadAddress(target);
size_t bytes_read = process->ReadMemory (offset_to_top_location,
memory_buffer,
address_byte_size,
error);
if (!error.Success() || (bytes_read != address_byte_size))
{
return false;
}
offset = 0;
int64_t offset_to_top = data.GetMaxS64(&offset, process->GetAddressByteSize());
// So the dynamic type is a value that starts at offset_to_top
// above the original address.
lldb::addr_t dynamic_addr = original_ptr + offset_to_top;
if (!target->GetSectionLoadList().ResolveLoadAddress (dynamic_addr, dynamic_address))
{
dynamic_address.SetRawAddress(dynamic_addr);
}
return true;
}
}
}
}
}
}
return class_type_or_name.IsEmpty() == false;
}
std::unique_ptr<SwiftHashedContainerBufferHandler>
SwiftHashedContainerBufferHandler::CreateBufferHandler (ValueObject& valobj,
NativeCreatorFunction Native,
SyntheticCreatorFunction Synthetic,
ConstString mangled,
ConstString demangled)
{
static ConstString g__variantStorage("_variantStorage");
static ConstString g_Native("native");
static ConstString g_Cocoa("cocoa");
static ConstString g_nativeStorage("nativeStorage");
static ConstString g_buffer("buffer");
static ConstString g_storage("storage");
static ConstString g__storage("_storage");
static ConstString g_Some("some");
Error error;
ProcessSP process_sp(valobj.GetProcessSP());
if (!process_sp)
return nullptr;
ConstString type_name_cs(valobj.GetTypeName());
if (type_name_cs)
{
llvm::StringRef type_name_strref(type_name_cs.GetStringRef());
if (type_name_strref.startswith(mangled.GetCString()) ||
type_name_strref.startswith(demangled.GetCString()))
{
return CreateBufferHandlerForNativeStorageOwner(valobj, valobj.GetPointerValue(), false, Native);
}
}
ValueObjectSP valobj_sp = valobj.GetSP()->GetQualifiedRepresentationIfAvailable(lldb::eDynamicCanRunTarget, false);
ValueObjectSP _variantStorageSP(valobj_sp->GetChildMemberWithName(g__variantStorage, true));
if (!_variantStorageSP)
return nullptr;
ConstString storage_kind(_variantStorageSP->GetValueAsCString());
if (!storage_kind)
return nullptr;
if (g_Cocoa == storage_kind)
{
ValueObjectSP child_sp(_variantStorageSP->GetChildMemberWithName(g_Native, true));
if (!child_sp)
return nullptr;
// it's an NSDictionary in disguise
uint64_t cocoa_storage_ptr = child_sp->GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
if (cocoa_storage_ptr == LLDB_INVALID_ADDRESS || error.Fail())
return nullptr;
cocoa_storage_ptr &= 0x00FFFFFFFFFFFFFF; // for some reason I need to zero out the MSB; figure out why later
CompilerType id = process_sp->GetTarget().GetScratchClangASTContext()->GetBasicType(lldb::eBasicTypeObjCID);
InferiorSizedWord isw(cocoa_storage_ptr, *process_sp);
ValueObjectSP cocoarr_sp = ValueObject::CreateValueObjectFromData("cocoarr", isw.GetAsData(process_sp->GetByteOrder()), valobj.GetExecutionContextRef(), id);
if (!cocoarr_sp)
return nullptr;
auto objc_runtime = process_sp->GetObjCLanguageRuntime();
auto descriptor_sp = objc_runtime->GetClassDescriptor(*cocoarr_sp);
if (!descriptor_sp)
return nullptr;
ConstString classname(descriptor_sp->GetClassName());
if (classname && classname.GetStringRef().startswith(mangled.GetCString()))
{
return CreateBufferHandlerForNativeStorageOwner(*_variantStorageSP, cocoa_storage_ptr, true, Native);
}
else
{
auto handler = std::unique_ptr<SwiftHashedContainerBufferHandler>(Synthetic(cocoarr_sp));
if (handler && handler->IsValid())
return handler;
return nullptr;
}
}
if (g_Native == storage_kind)
{
ValueObjectSP native_sp(_variantStorageSP->GetChildAtNamePath({ g_Native }));
ValueObjectSP nativeStorage_sp(_variantStorageSP->GetChildAtNamePath( { g_Native, g_nativeStorage } ));
if (!native_sp || !nativeStorage_sp)
return nullptr;
CompilerType child_type(valobj.GetCompilerType());
lldb::TemplateArgumentKind kind;
CompilerType key_type(child_type.GetTemplateArgument(0, kind));
CompilerType value_type(child_type.GetTemplateArgument(1, kind));
auto handler = std::unique_ptr<SwiftHashedContainerBufferHandler>(Native(nativeStorage_sp, key_type, value_type));
if (handler && handler->IsValid())
return handler;
return nullptr;
}
return nullptr;
}
bool
ItaniumABILanguageRuntime::GetDynamicTypeAndAddress (ValueObject &in_value,
lldb::DynamicValueType use_dynamic,
TypeAndOrName &class_type_or_name,
Address &dynamic_address)
{
// For Itanium, if the type has a vtable pointer in the object, it will be at offset 0
// in the object. That will point to the "address point" within the vtable (not the beginning of the
// vtable.) We can then look up the symbol containing this "address point" and that symbol's name
// demangled will contain the full class name.
// The second pointer above the "address point" is the "offset_to_top". We'll use that to get the
// start of the value object which holds the dynamic type.
//
// Only a pointer or reference type can have a different dynamic and static type:
if (CouldHaveDynamicValue (in_value))
{
// FIXME: Can we get the Clang Type and ask it if the thing is really virtual? That would avoid false positives,
// at the cost of not looking for the dynamic type of objects if DWARF->Clang gets it wrong.
// First job, pull out the address at 0 offset from the object.
AddressType address_type;
lldb::addr_t original_ptr = in_value.GetPointerValue(&address_type);
if (original_ptr == LLDB_INVALID_ADDRESS)
return false;
Target *target = in_value.GetUpdatePoint().GetTargetSP().get();
Process *process = in_value.GetUpdatePoint().GetProcessSP().get();
char memory_buffer[16];
DataExtractor data(memory_buffer, sizeof(memory_buffer),
process->GetByteOrder(),
process->GetAddressByteSize());
size_t address_byte_size = process->GetAddressByteSize();
Error error;
size_t bytes_read = process->ReadMemory (original_ptr,
memory_buffer,
address_byte_size,
error);
if (!error.Success() || (bytes_read != address_byte_size))
{
return false;
}
uint32_t offset_ptr = 0;
lldb::addr_t vtable_address_point = data.GetAddress (&offset_ptr);
if (offset_ptr == 0)
return false;
// Now find the symbol that contains this address:
SymbolContext sc;
Address address_point_address;
if (target && !target->GetSectionLoadList().IsEmpty())
{
if (target->GetSectionLoadList().ResolveLoadAddress (vtable_address_point, address_point_address))
{
target->GetImages().ResolveSymbolContextForAddress (address_point_address, eSymbolContextSymbol, sc);
Symbol *symbol = sc.symbol;
if (symbol != NULL)
{
const char *name = symbol->GetMangled().GetDemangledName().AsCString();
if (strstr(name, vtable_demangled_prefix) == name)
{
// We are a C++ class, that's good. Get the class name and look it up:
const char *class_name = name + strlen(vtable_demangled_prefix);
class_type_or_name.SetName (class_name);
TypeList class_types;
uint32_t num_matches = target->GetImages().FindTypes (sc,
ConstString(class_name),
true,
UINT32_MAX,
class_types);
if (num_matches == 1)
{
class_type_or_name.SetTypeSP(class_types.GetTypeAtIndex(0));
}
else if (num_matches > 1)
{
for (size_t i = 0; i < num_matches; i++)
{
lldb::TypeSP this_type(class_types.GetTypeAtIndex(i));
if (this_type)
{
if (ClangASTContext::IsCXXClassType(this_type->GetClangFullType()))
{
// There can only be one type with a given name,
// so we've just found duplicate definitions, and this
// one will do as well as any other.
// We don't consider something to have a dynamic type if
// it is the same as the static type. So compare against
// the value we were handed:
clang::ASTContext *in_ast_ctx = in_value.GetClangAST ();
clang::ASTContext *this_ast_ctx = this_type->GetClangAST ();
if (in_ast_ctx != this_ast_ctx
|| !ClangASTContext::AreTypesSame (in_ast_ctx,
in_value.GetClangType(),
this_type->GetClangFullType()))
{
class_type_or_name.SetTypeSP (this_type);
return true;
}
return false;
}
}
}
}
else
return false;
// The offset_to_top is two pointers above the address.
Address offset_to_top_address = address_point_address;
int64_t slide = -2 * ((int64_t) target->GetArchitecture().GetAddressByteSize());
offset_to_top_address.Slide (slide);
Error error;
lldb::addr_t offset_to_top_location = offset_to_top_address.GetLoadAddress(target);
size_t bytes_read = process->ReadMemory (offset_to_top_location,
memory_buffer,
address_byte_size,
error);
if (!error.Success() || (bytes_read != address_byte_size))
{
return false;
}
offset_ptr = 0;
int64_t offset_to_top = data.GetMaxS64(&offset_ptr, process->GetAddressByteSize());
// So the dynamic type is a value that starts at offset_to_top
// above the original address.
lldb::addr_t dynamic_addr = original_ptr + offset_to_top;
if (!target->GetSectionLoadList().ResolveLoadAddress (dynamic_addr, dynamic_address))
{
dynamic_address.SetOffset(dynamic_addr);
dynamic_address.SetSection(NULL);
}
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();
}
bool
lldb_private::formatters::CFBinaryHeapSummaryProvider (ValueObject& valobj, Stream& stream, const TypeSummaryOptions& options)
{
static ConstString g_TypeHint("CFBinaryHeap");
ProcessSP process_sp = valobj.GetProcessSP();
if (!process_sp)
return false;
ObjCLanguageRuntime* runtime = (ObjCLanguageRuntime*)process_sp->GetLanguageRuntime(lldb::eLanguageTypeObjC);
if (!runtime)
return false;
ObjCLanguageRuntime::ClassDescriptorSP descriptor(runtime->GetClassDescriptor(valobj));
if (!descriptor.get() || !descriptor->IsValid())
return false;
uint32_t ptr_size = process_sp->GetAddressByteSize();
lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
if (!valobj_addr)
return false;
uint32_t count = 0;
bool is_type_ok = false; // check to see if this is a CFBinaryHeap we know about
if (descriptor->IsCFType())
{
ConstString type_name(valobj.GetTypeName());
if (type_name == ConstString("__CFBinaryHeap") || type_name == ConstString("const struct __CFBinaryHeap"))
{
if (valobj.IsPointerType())
is_type_ok = true;
}
}
if (is_type_ok == false)
{
StackFrameSP frame_sp(valobj.GetFrameSP());
if (!frame_sp)
return false;
ValueObjectSP count_sp;
StreamString expr;
expr.Printf("(int)CFBinaryHeapGetCount((void*)0x%" PRIx64 ")",valobj.GetPointerValue());
EvaluateExpressionOptions options;
options.SetResultIsInternal(true);
if (process_sp->GetTarget().EvaluateExpression(expr.GetData(), frame_sp.get(), count_sp, options) != eExpressionCompleted)
return false;
if (!count_sp)
return false;
count = count_sp->GetValueAsUnsigned(0);
}
else
{
uint32_t offset = 2*ptr_size;
Error error;
count = process_sp->ReadUnsignedIntegerFromMemory(offset, 4, 0, error);
if (error.Fail())
return false;
}
std::string prefix,suffix;
if (Language* language = Language::FindPlugin(options.GetLanguage()))
{
if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix, suffix))
{
prefix.clear();
suffix.clear();
}
}
stream.Printf("%s\"%u item%s\"%s",
prefix.c_str(),
count,(count == 1 ? "" : "s"),
suffix.c_str());
return true;
}
