public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolNode[] { this }));
}
NativeWriter nativeWriter = new NativeWriter();
VertexHashtable hashtable = new VertexHashtable();
Section nativeSection = nativeWriter.NewSection();
nativeSection.Place(hashtable);
foreach (var type in factory.MetadataManager.GetTypesWithEETypes())
{
// If this is an instantiated non-canonical generic type, add it to the generic instantiations hashtable
if (!type.HasInstantiation || type.IsGenericDefinition || type.IsCanonicalSubtype(CanonicalFormKind.Any))
{
continue;
}
var typeSymbol = factory.NecessaryTypeSymbol(type);
uint instantiationId = _externalReferences.GetIndex(typeSymbol);
Vertex hashtableEntry = nativeWriter.GetUnsignedConstant(instantiationId);
hashtable.Append((uint)type.GetHashCode(), nativeSection.Place(hashtableEntry));
}
byte[] streamBytes = nativeWriter.Save();
_endSymbol.SetSymbolOffset(streamBytes.Length);
return(new ObjectData(streamBytes, Array.Empty <Relocation>(), 1, new ISymbolNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolNode[] { this }));
}
// Zero out the dictionary so that we AV if someone tries to insert after we're done.
_insertedSymbolsDictionary = null;
var builder = new ObjectDataBuilder(factory);
foreach (ISymbolNode symbol in _insertedSymbols)
{
// TODO: set low bit if the linkage of the symbol is IAT_PVALUE.
builder.EmitPointerReloc(symbol);
}
_endSymbol.SetSymbolOffset(builder.CountBytes);
builder.DefinedSymbols.Add(this);
builder.DefinedSymbols.Add(_endSymbol);
return(builder.ToObjectData());
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// The dependency tracking of this node currently does nothing because the data emission relies
// the set of compiled methods which has an incomplete state during dependency tracking.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
ObjectDataBuilder objData = new ObjectDataBuilder(factory, relocsOnly);
objData.RequireInitialPointerAlignment();
objData.AddSymbol(this);
objData.AddSymbol(_endSymbol);
RelocType reloc = factory.Target.Abi == TargetAbi.CoreRT ?
RelocType.IMAGE_REL_BASED_RELPTR32 : RelocType.IMAGE_REL_BASED_ADDR32NB;
foreach (var mappingEntry in factory.MetadataManager.GetStackTraceMapping(factory))
{
objData.EmitReloc(factory.MethodEntrypoint(mappingEntry.Entity), reloc);
objData.EmitInt(mappingEntry.MetadataHandle);
}
_endSymbol.SetSymbolOffset(objData.CountBytes);
return(objData.ToObjectData());
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolNode[] { this }));
}
var writer = new NativeWriter();
var typeMapHashTable = new VertexHashtable();
Section hashTableSection = writer.NewSection();
hashTableSection.Place(typeMapHashTable);
foreach (var delegateEntry in factory.MetadataManager.DelegateMarshalingThunks)
{
Internal.TypeSystem.TypeDesc delegateType = delegateEntry.Value.DelegateType;
Vertex vertex = writer.GetTuple(
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.NecessaryTypeSymbol(delegateType))),
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.MethodEntrypoint(delegateEntry.Value)))
);
int hashCode = delegateType.GetHashCode();
typeMapHashTable.Append((uint)hashCode, hashTableSection.Place(vertex));
}
byte[] hashTableBytes = writer.Save();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly)
{
ObjectDataBuilder builder = new ObjectDataBuilder(factory);
builder.Alignment = factory.Target.PointerSize;
if (_sorter != null)
{
_nestedNodesList.Sort(_sorter);
}
builder.DefinedSymbols.Add(_startSymbol);
foreach (EmbeddedObjectNode node in _nestedNodesList)
{
if (!relocsOnly)
{
node.Offset = builder.CountBytes;
}
node.EncodeData(ref builder, factory, relocsOnly);
if (node is ISymbolNode)
{
builder.DefinedSymbols.Add((ISymbolNode)node);
}
}
_endSymbol.SetSymbolOffset(builder.CountBytes);
builder.DefinedSymbols.Add(_endSymbol);
ObjectData objData = builder.ToObjectData();
return(objData);
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolNode[] { this }));
}
ObjectDataBuilder builder = new ObjectDataBuilder(factory);
foreach (var mappingEntry in factory.MetadataManager.GetTypeDefinitionMapping())
{
var node = (EETypeNode)factory.ConstructedTypeSymbol(mappingEntry.Entity);
if (node.Marked)
{
// TODO: this format got very inefficient due to not being able to use RVAs
// replace with a hash table
builder.EmitPointerReloc(node);
builder.EmitInt(mappingEntry.MetadataHandle);
if (factory.Target.PointerSize == 8)
{
builder.EmitInt(0); // Pad
}
}
}
_endSymbol.SetSymbolOffset(builder.CountBytes);
builder.DefinedSymbols.Add(this);
builder.DefinedSymbols.Add(_endSymbol);
return(builder.ToObjectData());
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
NativeWriter writer = new NativeWriter();
VertexHashtable hashtable = new VertexHashtable();
Section section = writer.NewSection();
section.Place(hashtable);
foreach (var type in factory.MetadataManager.GetTypesWithConstructedEETypes())
{
if (!type.HasInstantiation || type.IsCanonicalSubtype(CanonicalFormKind.Any) || type.IsGenericDefinition)
{
continue;
}
MetadataType metadataType = type as MetadataType;
if (metadataType == null)
{
continue;
}
VertexBag bag = new VertexBag();
if (metadataType.GCStaticFieldSize.AsInt > 0)
{
ISymbolNode gcStaticIndirection = factory.Indirection(factory.TypeGCStaticsSymbol(metadataType));
bag.AppendUnsigned(BagElementKind.GcStaticData, _nativeStaticsReferences.GetIndex(gcStaticIndirection));
}
if (metadataType.NonGCStaticFieldSize.AsInt > 0 || factory.PreinitializationManager.HasLazyStaticConstructor(type))
{
ISymbolNode nonGCStaticIndirection = factory.Indirection(factory.TypeNonGCStaticsSymbol(metadataType));
bag.AppendUnsigned(BagElementKind.NonGcStaticData, _nativeStaticsReferences.GetIndex(nonGCStaticIndirection));
}
if (metadataType.ThreadGcStaticFieldSize.AsInt > 0)
{
ISymbolNode threadStaticsIndirection = factory.Indirection(factory.TypeThreadStaticIndex(metadataType));
bag.AppendUnsigned(BagElementKind.ThreadStaticIndex, _nativeStaticsReferences.GetIndex(threadStaticsIndirection));
}
if (bag.ElementsCount > 0)
{
uint typeId = _externalReferences.GetIndex(factory.NecessaryTypeSymbol(type));
Vertex staticsInfo = writer.GetTuple(writer.GetUnsignedConstant(typeId), bag);
hashtable.Append((uint)type.GetHashCode(), section.Place(staticsInfo));
}
}
byte[] hashTableBytes = writer.Save();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// Dependencies for this node are tracked by the method code nodes
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
// Ensure the native layout data has been saved, in order to get valid Vertex offsets for the signature Vertices
factory.MetadataManager.NativeLayoutInfo.SaveNativeLayoutInfoWriter(factory);
NativeWriter nativeWriter = new NativeWriter();
VertexHashtable hashtable = new VertexHashtable();
Section nativeSection = nativeWriter.NewSection();
nativeSection.Place(hashtable);
foreach (TypeDesc type in factory.MetadataManager.GetTypesWithConstructedEETypes())
{
if (!IsEligibleToHaveATemplate(type))
{
continue;
}
if (factory.Target.Abi == TargetAbi.ProjectN)
{
// If the type does not have fully constructed type, don't emit it.
// TODO: Remove the workaround once we stop using the STS dependency analysis.
if (!factory.ConstructedTypeSymbol(type).Marked)
{
continue;
}
}
// Type's native layout info
NativeLayoutTemplateTypeLayoutVertexNode templateNode = factory.NativeLayout.TemplateTypeLayout(type);
// If this template isn't considered necessary, don't emit it.
if (!templateNode.Marked)
{
continue;
}
Vertex nativeLayout = templateNode.SavedVertex;
// Hashtable Entry
Vertex entry = nativeWriter.GetTuple(
nativeWriter.GetUnsignedConstant(_externalReferences.GetIndex(factory.NecessaryTypeSymbol(type))),
nativeWriter.GetUnsignedConstant((uint)nativeLayout.VertexOffset));
// Add to the hash table, hashed by the containing type's hashcode
uint hashCode = (uint)type.GetHashCode();
hashtable.Append(hashCode, nativeSection.Place(entry));
}
byte[] streamBytes = nativeWriter.Save();
_endSymbol.SetSymbolOffset(streamBytes.Length);
return(new ObjectData(streamBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
/// <summary>
/// Builds a native hashtable containing data about each manifest resource
/// </summary>
/// <returns></returns>
private byte[] GenerateIndexBlob(NodeFactory factory)
{
NativeWriter nativeWriter = new NativeWriter();
Section indexHashtableSection = nativeWriter.NewSection();
VertexHashtable indexHashtable = new VertexHashtable();
indexHashtableSection.Place(indexHashtable);
// Build a table with a tuple of Assembly Full Name, Resource Name, Offset within the resource data blob, Length
// for each resource.
// This generates a hashtable for the convenience of managed code since there's
// a reader for VertexHashtable, but not for VertexSequence.
foreach (ResourceIndexData indexData in _resourceDataNode.GetOrCreateIndexData(factory))
{
Vertex asmName = nativeWriter.GetStringConstant(indexData.AssemblyName);
Vertex resourceName = nativeWriter.GetStringConstant(indexData.ResourceName);
Vertex offsetVertex = nativeWriter.GetUnsignedConstant((uint)indexData.NativeOffset);
Vertex lengthVertex = nativeWriter.GetUnsignedConstant((uint)indexData.Length);
Vertex indexVertex = nativeWriter.GetTuple(asmName, resourceName);
indexVertex = nativeWriter.GetTuple(indexVertex, offsetVertex);
indexVertex = nativeWriter.GetTuple(indexVertex, lengthVertex);
int hashCode = TypeHashingAlgorithms.ComputeNameHashCode(indexData.AssemblyName);
indexHashtable.Append((uint)hashCode, indexHashtableSection.Place(indexVertex));
}
byte[] blob = nativeWriter.Save();
_endSymbol.SetSymbolOffset(blob.Length);
return(blob);
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
Debug.Assert(_dynamicInvokeMethodContainerType != null);
// Ensure the native layout blob has been saved
factory.MetadataManager.NativeLayoutInfo.SaveNativeLayoutInfoWriter(factory);
ObjectDataBuilder objData = new ObjectDataBuilder(factory, relocsOnly);
objData.RequireInitialPointerAlignment();
objData.AddSymbol(this);
if (factory.Target.SupportsRelativePointers)
{
objData.EmitReloc(factory.NecessaryTypeSymbol(_dynamicInvokeMethodContainerType), RelocType.IMAGE_REL_BASED_RELPTR32);
}
else
{
objData.EmitPointerReloc(factory.NecessaryTypeSymbol(_dynamicInvokeMethodContainerType));
}
List <KeyValuePair <MethodDesc, int> > sortedList = new List <KeyValuePair <MethodDesc, int> >(_methodToTemplateIndex);
sortedList.Sort((firstEntry, secondEntry) => firstEntry.Value.CompareTo(secondEntry.Value));
for (int i = 0; i < sortedList.Count; i++)
{
var nameAndSig = factory.NativeLayout.PlacedSignatureVertex(factory.NativeLayout.MethodNameAndSignatureVertex(sortedList[i].Key));
if (factory.Target.SupportsRelativePointers)
{
objData.EmitInt(nameAndSig.SavedVertex.VertexOffset);
objData.EmitReloc(factory.MethodEntrypoint(sortedList[i].Key), RelocType.IMAGE_REL_BASED_RELPTR32);
}
else
{
objData.EmitNaturalInt(nameAndSig.SavedVertex.VertexOffset);
objData.EmitPointerReloc(factory.MethodEntrypoint(sortedList[i].Key));
}
}
_endSymbol.SetSymbolOffset(objData.CountBytes);
objData.AddSymbol(_endSymbol);
// Prevent further adds now we're done writing
#if DEBUG
if (!relocsOnly)
{
_dataEmitted = true;
}
#endif
return(objData.ToObjectData());
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolNode[] { this }));
}
var writer = new NativeWriter();
var typeMapHashTable = new VertexHashtable();
Section hashTableSection = writer.NewSection();
hashTableSection.Place(typeMapHashTable);
foreach (var mappingEntry in factory.MetadataManager.GetTypeDefinitionMapping())
{
if (!factory.CompilationModuleGroup.ContainsType(mappingEntry.Entity))
{
continue;
}
// We are looking for any EEType - constructed or not, it has to be in the mapping
// table so that we can map it to metadata.
EETypeNode node = null;
if (!mappingEntry.Entity.IsGenericDefinition)
{
node = factory.ConstructedTypeSymbol(mappingEntry.Entity) as EETypeNode;
}
if (node == null || !node.Marked)
{
// This might have been a typeof() expression.
node = factory.NecessaryTypeSymbol(mappingEntry.Entity) as EETypeNode;
}
if (node.Marked)
{
Vertex vertex = writer.GetTuple(
writer.GetUnsignedConstant(_externalReferences.GetIndex(node)),
writer.GetUnsignedConstant((uint)mappingEntry.MetadataHandle)
);
int hashCode = node.Type.GetHashCode();
typeMapHashTable.Append((uint)hashCode, hashTableSection.Place(vertex));
}
}
MemoryStream ms = new MemoryStream();
writer.Save(ms);
byte[] hashTableBytes = ms.ToArray();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolNode[] { this }));
}
var writer = new NativeWriter();
var reflectionBlockTypeMapHashTable = new VertexHashtable();
Section hashTableSection = writer.NewSection();
hashTableSection.Place(reflectionBlockTypeMapHashTable);
foreach (var type in factory.MetadataManager.GetTypesWithEETypes())
{
if (!type.IsTypeDefinition)
{
continue;
}
var mdType = type as MetadataType;
if (mdType == null)
{
continue;
}
if (!factory.MetadataManager.IsReflectionBlocked(mdType))
{
continue;
}
if (!factory.CompilationModuleGroup.ContainsType(mdType))
{
continue;
}
// Go with a necessary type symbol. It will be upgraded to a constructed one if a constructed was emitted.
IEETypeNode typeSymbol = factory.NecessaryTypeSymbol(type);
Vertex vertex = writer.GetUnsignedConstant(_externalReferences.GetIndex(typeSymbol));
int hashCode = typeSymbol.Type.GetHashCode();
reflectionBlockTypeMapHashTable.Append((uint)hashCode, hashTableSection.Place(vertex));
}
MemoryStream ms = new MemoryStream();
writer.Save(ms);
byte[] hashTableBytes = ms.ToArray();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// Dependencies for this node are tracked by the method code nodes
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
// Ensure the native layout data has been saved, in order to get valid Vertex offsets for the signature Vertices
factory.MetadataManager.NativeLayoutInfo.SaveNativeLayoutInfoWriter(factory);
NativeWriter nativeWriter = new NativeWriter();
VertexHashtable hashtable = new VertexHashtable();
Section nativeSection = nativeWriter.NewSection();
nativeSection.Place(hashtable);
foreach (MethodDesc method in factory.MetadataManager.GetCompiledMethods())
{
if (!IsEligibleToBeATemplate(method))
{
continue;
}
var methodEntryNode = factory.NativeLayout.TemplateMethodEntry(method);
if (!methodEntryNode.Marked)
{
continue;
}
// Method entry
Vertex methodEntry = methodEntryNode.SavedVertex;
// Method's native layout info
Vertex nativeLayout = factory.NativeLayout.TemplateMethodLayout(method).SavedVertex;
// Hashtable Entry
Vertex entry = nativeWriter.GetTuple(
nativeWriter.GetUnsignedConstant((uint)methodEntry.VertexOffset),
nativeWriter.GetUnsignedConstant((uint)nativeLayout.VertexOffset));
// Add to the hash table, hashed by the containing type's hashcode
uint hashCode = (uint)method.GetHashCode();
hashtable.Append(hashCode, nativeSection.Place(entry));
}
byte[] streamBytes = nativeWriter.Save();
_endSymbol.SetSymbolOffset(streamBytes.Length);
return(new ObjectData(streamBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolNode[] { this }));
}
ObjectDataBuilder builder = new ObjectDataBuilder(factory);
foreach (var mappingEntry in factory.MetadataManager.GetTypeDefinitionMapping())
{
if (!factory.CompilationModuleGroup.ContainsType(mappingEntry.Entity))
{
continue;
}
// We are looking for any EEType - constructed or not, it has to be in the mapping
// table so that we can map it to metadata.
EETypeNode node = null;
if (!mappingEntry.Entity.IsGenericDefinition)
{
node = factory.ConstructedTypeSymbol(mappingEntry.Entity) as EETypeNode;
}
if (node == null || !node.Marked)
{
// This might have been a typeof() expression.
node = factory.NecessaryTypeSymbol(mappingEntry.Entity) as EETypeNode;
}
if (node.Marked)
{
// TODO: this format got very inefficient due to not being able to use RVAs
// replace with a hash table
builder.EmitPointerReloc(node);
builder.EmitInt(mappingEntry.MetadataHandle);
if (factory.Target.PointerSize == 8)
{
builder.EmitInt(0); // Pad
}
}
}
_endSymbol.SetSymbolOffset(builder.CountBytes);
builder.DefinedSymbols.Add(this);
builder.DefinedSymbols.Add(_endSymbol);
return(builder.ToObjectData());
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolNode[] { this }));
}
var writer = new NativeWriter();
var typeMapHashTable = new VertexHashtable();
Section hashTableSection = writer.NewSection();
hashTableSection.Place(typeMapHashTable);
foreach (var node in factory.MetadataManager.GetCctorContextMapping())
{
MetadataType type = node.Type;
Debug.Assert(factory.TypeSystemContext.HasLazyStaticConstructor(type));
// If this type doesn't generate an EEType in the current compilation, don't report it in the table.
// If nobody can get to the EEType, they can't ask to run the cctor. We don't need to force generate it.
if (!factory.MetadataManager.TypeGeneratesEEType(type))
{
continue;
}
// Hash table is hashed by the hashcode of the owning type.
// Each entry has: the EEType of the type, followed by the non-GC static base.
// The non-GC static base is prefixed by the class constructor context.
// Unfortunately we need to adjust for the cctor context just so that we can subtract it again at runtime...
int delta = NonGCStaticsNode.GetClassConstructorContextStorageSize(factory.TypeSystemContext.Target, type);
Vertex vertex = writer.GetTuple(
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.NecessaryTypeSymbol(type))),
writer.GetUnsignedConstant(_externalReferences.GetIndex(node, delta))
);
int hashCode = type.GetHashCode();
typeMapHashTable.Append((uint)hashCode, hashTableSection.Place(vertex));
}
MemoryStream ms = new MemoryStream();
writer.Save(ms);
byte[] hashTableBytes = ms.ToArray();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
var writer = new NativeWriter();
var defaultConstructorHashtable = new VertexHashtable();
Section defaultConstructorHashtableSection = writer.NewSection();
defaultConstructorHashtableSection.Place(defaultConstructorHashtable);
foreach (var type in factory.MetadataManager.GetTypesWithConstructedEETypes())
{
MethodDesc defaultCtor = type.GetDefaultConstructor();
if (defaultCtor == null)
{
continue;
}
// We only place default constructors of reflection-blocked types in this table.
// At runtime, the type loader will search both this table and the invoke map
// for default constructor info. If the ctor is reflectable, we would have
// expected dataflow analysis to ensure there's a reflectable method for it.
// If we don't find a reflectable method for the ctor of a non-blocked type
// there would have to be a dataflow analysis warning.
if (!factory.MetadataManager.IsReflectionBlocked(defaultCtor))
{
continue;
}
defaultCtor = defaultCtor.GetCanonMethodTarget(CanonicalFormKind.Specific);
ISymbolNode typeNode = factory.NecessaryTypeSymbol(type);
ISymbolNode defaultCtorNode = factory.MethodEntrypoint(defaultCtor, false);
Vertex vertex = writer.GetTuple(
writer.GetUnsignedConstant(_externalReferences.GetIndex(typeNode)),
writer.GetUnsignedConstant(_externalReferences.GetIndex(defaultCtorNode)));
int hashCode = type.GetHashCode();
defaultConstructorHashtable.Append((uint)hashCode, defaultConstructorHashtableSection.Place(vertex));
}
byte[] hashTableBytes = writer.Save();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolNode[] { this }));
}
var writer = new NativeWriter();
var typeMapHashTable = new VertexHashtable();
Section hashTableSection = writer.NewSection();
hashTableSection.Place(typeMapHashTable);
foreach (var mappingEntry in factory.MetadataManager.GetTypeDefinitionMapping())
{
if (!factory.CompilationModuleGroup.ContainsType(mappingEntry.Entity))
{
continue;
}
// Types that don't have EETypes don't need mapping table entries because there's no risk of them
// not unifying to the same System.Type at runtime.
if (!factory.MetadataManager.TypeGeneratesEEType(mappingEntry.Entity))
{
continue;
}
// Go with a necessary type symbol. It will be upgraded to a constructed one if a constructed was emitted.
IEETypeNode typeSymbol = factory.NecessaryTypeSymbol(mappingEntry.Entity);
Vertex vertex = writer.GetTuple(
writer.GetUnsignedConstant(_externalReferences.GetIndex(typeSymbol)),
writer.GetUnsignedConstant((uint)mappingEntry.MetadataHandle)
);
int hashCode = typeSymbol.Type.GetHashCode();
typeMapHashTable.Append((uint)hashCode, hashTableSection.Place(vertex));
}
MemoryStream ms = new MemoryStream();
writer.Save(ms);
byte[] hashTableBytes = ms.ToArray();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// Dependencies of the NativeLayoutInfo node are tracked by the callers that emit data into the native layout writer
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
SaveNativeLayoutInfoWriter(factory);
_endSymbol.SetSymbolOffset(_writerSavedBytes.Length);
return(new ObjectData(_writerSavedBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
var writer = new NativeWriter();
var typeMapHashTable = new VertexHashtable();
Section hashTableSection = writer.NewSection();
hashTableSection.Place(typeMapHashTable);
foreach (var type in factory.MetadataManager.GetTypesWithConstructedEETypes())
{
if (!type.IsSzArray)
{
continue;
}
var arrayType = (ArrayType)type;
// This optimization is not compatible with canInlineTypeCheck on JIT/EE interface returning
// CORINFO_INLINE_TYPECHECK_PASS unconditionally.
//
// If we're generating a template for this type, we can skip generating the hashtable entry
// since the type loader can just create this type at runtime if something needs it. It's
// okay to have multiple EETypes for the same array type.
// var canonArrayType = arrayType.ConvertToCanonForm(CanonicalFormKind.Specific);
// if (arrayType != canonArrayType && factory.NativeLayout.TemplateTypeLayout(canonArrayType).Marked)
// continue;
// Look at the constructed type symbol. If a constructed type wasn't emitted, then the array map entry isn't valid for use
IEETypeNode arrayTypeSymbol = factory.ConstructedTypeSymbol(arrayType);
Vertex vertex = writer.GetUnsignedConstant(_externalReferences.GetIndex(arrayTypeSymbol));
int hashCode = arrayType.GetHashCode();
typeMapHashTable.Append((uint)hashCode, hashTableSection.Place(vertex));
}
byte[] hashTableBytes = writer.Save();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
var writer = new NativeWriter();
var typeMapHashTable = new VertexHashtable();
Section hashTableSection = writer.NewSection();
hashTableSection.Place(typeMapHashTable);
foreach (var arrayType in factory.MetadataManager.GetArrayTypeMapping())
{
if (!arrayType.IsSzArray)
{
continue;
}
if (!factory.MetadataManager.TypeGeneratesEEType(arrayType))
{
continue;
}
if (!arrayType.ElementType.IsValueType)
{
continue;
}
// Go with a necessary type symbol. It will be upgraded to a constructed one if a constructed was emitted.
IEETypeNode arrayTypeSymbol = factory.NecessaryTypeSymbol(arrayType);
Vertex vertex = writer.GetUnsignedConstant(_externalReferences.GetIndex(arrayTypeSymbol));
int hashCode = arrayType.GetHashCode();
typeMapHashTable.Append((uint)hashCode, hashTableSection.Place(vertex));
}
byte[] hashTableBytes = writer.Save();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
var writer = new NativeWriter();
var typeMapHashTable = new VertexHashtable();
Section hashTableSection = writer.NewSection();
hashTableSection.Place(typeMapHashTable);
foreach (var node in factory.MetadataManager.GetCctorContextMapping())
{
MetadataType type = node.Type;
Debug.Assert(factory.PreinitializationManager.HasLazyStaticConstructor(type));
// If this type doesn't generate an MethodTable in the current compilation, don't report it in the table.
// If nobody can get to the MethodTable, they can't ask to run the cctor. We don't need to force generate it.
if (!factory.MetadataManager.TypeGeneratesEEType(type))
{
continue;
}
// Hash table is hashed by the hashcode of the owning type.
// Each entry has: the MethodTable of the type, followed by the non-GC static base.
// The non-GC static base is prefixed by the class constructor context.
Vertex vertex = writer.GetTuple(
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.NecessaryTypeSymbol(type))),
writer.GetUnsignedConstant(_externalReferences.GetIndex(node))
);
int hashCode = type.GetHashCode();
typeMapHashTable.Append((uint)hashCode, hashTableSection.Place(vertex));
}
byte[] hashTableBytes = writer.Save();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
var writer = new NativeWriter();
var typeMapHashTable = new VertexHashtable();
Section hashTableSection = writer.NewSection();
hashTableSection.Place(typeMapHashTable);
foreach (var type in factory.MetadataManager.GetTypesWithConstructedEETypes())
{
if (!type.IsSzArray)
{
continue;
}
var arrayType = (ArrayType)type;
if (!arrayType.ElementType.IsValueType)
{
continue;
}
// Look at the constructed type symbol. If a constructed type wasn't emitted, then the array map entry isn't valid for use
IEETypeNode arrayTypeSymbol = factory.ConstructedTypeSymbol(arrayType);
Vertex vertex = writer.GetUnsignedConstant(_externalReferences.GetIndex(arrayTypeSymbol));
int hashCode = arrayType.GetHashCode();
typeMapHashTable.Append((uint)hashCode, hashTableSection.Place(vertex));
}
byte[] hashTableBytes = writer.Save();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
var writer = new NativeWriter();
var defaultConstructorHashtable = new VertexHashtable();
Section defaultConstructorHashtableSection = writer.NewSection();
defaultConstructorHashtableSection.Place(defaultConstructorHashtable);
foreach (var type in factory.MetadataManager.GetTypesWithConstructedEETypes())
{
MethodDesc defaultCtor = type.GetDefaultConstructor();
if (defaultCtor == null)
{
continue;
}
defaultCtor = defaultCtor.GetCanonMethodTarget(CanonicalFormKind.Specific);
ISymbolNode typeNode = factory.NecessaryTypeSymbol(type);
ISymbolNode defaultCtorNode = factory.MethodEntrypoint(defaultCtor, false);
Vertex vertex = writer.GetTuple(
writer.GetUnsignedConstant(_externalReferences.GetIndex(typeNode)),
writer.GetUnsignedConstant(_externalReferences.GetIndex(defaultCtorNode)));
int hashCode = type.GetHashCode();
defaultConstructorHashtable.Append((uint)hashCode, defaultConstructorHashtableSection.Place(vertex));
}
byte[] hashTableBytes = writer.Save();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
NativeWriter nativeWriter = new NativeWriter();
VertexHashtable hashtable = new VertexHashtable();
Section nativeSection = nativeWriter.NewSection();
nativeSection.Place(hashtable);
// We go over constructed EETypes only. The places that need to consult this hashtable at runtime
// all need constructed EETypes. Placing unconstructed EETypes into this hashtable could make us
// accidentally satisfy e.g. MakeGenericType for something that was only used in a cast. Those
// should throw MissingRuntimeArtifact instead.
//
// We already make sure "necessary" EETypes that could potentially be loaded at runtime through
// the dynamic type loader get upgraded to constructed EETypes at AOT compile time.
foreach (var type in factory.MetadataManager.GetTypesWithConstructedEETypes())
{
// If this is an instantiated non-canonical generic type, add it to the generic instantiations hashtable
if (!type.HasInstantiation || type.IsGenericDefinition || type.IsCanonicalSubtype(CanonicalFormKind.Any))
{
continue;
}
var typeSymbol = factory.NecessaryTypeSymbol(type);
uint instantiationId = _externalReferences.GetIndex(typeSymbol);
Vertex hashtableEntry = nativeWriter.GetUnsignedConstant(instantiationId);
hashtable.Append((uint)type.GetHashCode(), nativeSection.Place(hashtableEntry));
}
byte[] streamBytes = nativeWriter.Save();
_endSymbol.SetSymbolOffset(streamBytes.Length);
return(new ObjectData(streamBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node has no relocations.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
byte[] blob = ((PrecomputedMetadataManager)factory.MetadataManager).GetStackTraceBlob(factory);
_endSymbol.SetSymbolOffset(blob.Length);
return(new ObjectData(
blob,
Array.Empty <Relocation>(),
1,
new ISymbolDefinitionNode[]
{
this,
EndSymbol
}));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node has no relocations.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolNode[] { this }));
}
byte[] blob = factory.MetadataManager.GetMetadataBlob();
_endSymbol.SetSymbolOffset(blob.Length);
return(new ObjectData(
blob,
Array.Empty <Relocation>(),
1,
new ISymbolNode[]
{
this,
_endSymbol
}));
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly)
{
ObjectDataBuilder builder = new ObjectDataBuilder(factory, relocsOnly);
builder.RequireInitialPointerAlignment();
if (_sorter != null)
{
_nestedNodesList.Sort(_sorter);
}
builder.AddSymbol(_startSymbol);
GetElementDataForNodes(ref builder, factory, relocsOnly);
_endSymbol.SetSymbolOffset(builder.CountBytes);
builder.AddSymbol(_endSymbol);
ObjectData objData = builder.ToObjectData();
return(objData);
}
/// <summary>
/// Extracts resources from all modules being compiled into a single blob and saves
/// the information needed to create an index into that blob.
/// </summary>
private byte[] GenerateResourceBlob(NodeFactory factory)
{
GetOrCreateIndexData(factory);
// Read resources into the blob
byte[] resourceBlob = new byte[_totalLength];
int currentPos = 0;
foreach (ResourceIndexData indexData in _indexData)
{
EcmaModule module = indexData.EcmaModule;
PEMemoryBlock resourceDirectory = module.PEReader.GetSectionData(module.PEReader.PEHeaders.CorHeader.ResourcesDirectory.RelativeVirtualAddress);
Debug.Assert(currentPos == indexData.NativeOffset);
BlobReader reader = resourceDirectory.GetReader(indexData.EcmaOffset, indexData.Length);
byte[] resourceData = reader.ReadBytes(indexData.Length);
Buffer.BlockCopy(resourceData, 0, resourceBlob, currentPos, resourceData.Length);
currentPos += resourceData.Length;
}
_endSymbol.SetSymbolOffset(resourceBlob.Length);
return(resourceBlob);
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
// Ensure the native layout blob has been saved
factory.MetadataManager.NativeLayoutInfo.SaveNativeLayoutInfoWriter(factory);
ObjectDataBuilder objData = new ObjectDataBuilder(factory, relocsOnly);
objData.RequireInitialPointerAlignment();
objData.AddSymbol(this);
if (_methodToTemplateIndex == null)
{
BuildMethodToIdMap(factory);
}
TypeDesc containerType = null;
foreach (var method in _methodToTemplateIndex.Keys)
{
Debug.Assert(containerType == null || containerType == method.OwningType);
containerType = method.OwningType;
#if !DEBUG
break;
#endif
}
if (factory.Target.SupportsRelativePointers)
{
objData.EmitReloc(factory.NecessaryTypeSymbol(containerType), RelocType.IMAGE_REL_BASED_RELPTR32);
}
else
{
objData.EmitPointerReloc(factory.NecessaryTypeSymbol(containerType));
}
List <KeyValuePair <MethodDesc, int> > sortedList = new List <KeyValuePair <MethodDesc, int> >(_methodToTemplateIndex);
sortedList.Sort((firstEntry, secondEntry) => firstEntry.Value.CompareTo(secondEntry.Value));
for (int i = 0; i < sortedList.Count; i++)
{
var nameAndSig = factory.NativeLayout.PlacedSignatureVertex(factory.NativeLayout.MethodNameAndSignatureVertex(sortedList[i].Key));
if (factory.Target.SupportsRelativePointers)
{
objData.EmitInt(nameAndSig.SavedVertex.VertexOffset);
objData.EmitReloc(factory.MethodEntrypoint(sortedList[i].Key), RelocType.IMAGE_REL_BASED_RELPTR32);
}
else
{
objData.EmitNaturalInt(nameAndSig.SavedVertex.VertexOffset);
objData.EmitPointerReloc(factory.MethodEntrypoint(sortedList[i].Key));
}
}
_endSymbol.SetSymbolOffset(objData.CountBytes);
objData.AddSymbol(_endSymbol);
return(objData.ToObjectData());
}
public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// This node does not trigger generation of other nodes.
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
// Ensure the native layout blob has been saved
factory.MetadataManager.NativeLayoutInfo.SaveNativeLayoutInfoWriter(factory);
var writer = new NativeWriter();
var typeMapHashTable = new VertexHashtable();
Section hashTableSection = writer.NewSection();
hashTableSection.Place(typeMapHashTable);
// Get a list of all methods that have a method body and metadata from the metadata manager.
foreach (var mappingEntry in factory.MetadataManager.GetMethodMapping(factory))
{
MethodDesc method = mappingEntry.Entity;
// The current format requires us to have an EEType for the owning type. We might want to lift this.
if (!factory.MetadataManager.TypeGeneratesEEType(method.OwningType))
{
continue;
}
// We have a method body, we have a metadata token, but we can't get an invoke stub. Bail.
if (!factory.MetadataManager.IsReflectionInvokable(method))
{
continue;
}
InvokeTableFlags flags = 0;
if (method.HasInstantiation)
{
flags |= InvokeTableFlags.IsGenericMethod;
}
if (method.GetCanonMethodTarget(CanonicalFormKind.Specific).RequiresInstArg())
{
flags |= InvokeTableFlags.RequiresInstArg;
}
if (method.IsDefaultConstructor)
{
flags |= InvokeTableFlags.IsDefaultConstructor;
}
if (ReflectionVirtualInvokeMapNode.NeedsVirtualInvokeInfo(method))
{
flags |= InvokeTableFlags.HasVirtualInvoke;
}
if (!method.IsAbstract)
{
flags |= InvokeTableFlags.HasEntrypoint;
}
if (mappingEntry.MetadataHandle != 0)
{
flags |= InvokeTableFlags.HasMetadataHandle;
}
if (!factory.MetadataManager.HasReflectionInvokeStubForInvokableMethod(method))
{
flags |= InvokeTableFlags.NeedsParameterInterpretation;
}
if (method.IsCanonicalMethod(CanonicalFormKind.Universal))
{
flags |= InvokeTableFlags.IsUniversalCanonicalEntry;
}
// TODO: native signature for P/Invokes and NativeCallable methods
if (method.IsRawPInvoke() || method.IsNativeCallable)
{
continue;
}
// Grammar of an entry in the hash table:
// Flags + DeclaringType + MetadataHandle/NameAndSig + Entrypoint + DynamicInvokeMethod + [NumGenericArgs + GenericArgs]
Vertex vertex = writer.GetUnsignedConstant((uint)flags);
if ((flags & InvokeTableFlags.HasMetadataHandle) != 0)
{
// Only store the offset portion of the metadata handle to get better integer compression
vertex = writer.GetTuple(vertex,
writer.GetUnsignedConstant((uint)(mappingEntry.MetadataHandle & MetadataManager.MetadataOffsetMask)));
}
else
{
var nameAndSig = factory.NativeLayout.PlacedSignatureVertex(factory.NativeLayout.MethodNameAndSignatureVertex(method.GetTypicalMethodDefinition()));
vertex = writer.GetTuple(vertex, writer.GetUnsignedConstant((uint)nameAndSig.SavedVertex.VertexOffset));
}
// Go with a necessary type symbol. It will be upgraded to a constructed one if a constructed was emitted.
IEETypeNode owningTypeSymbol = factory.NecessaryTypeSymbol(method.OwningType);
vertex = writer.GetTuple(vertex,
writer.GetUnsignedConstant(_externalReferences.GetIndex(owningTypeSymbol)));
if ((flags & InvokeTableFlags.HasEntrypoint) != 0)
{
bool useUnboxingStub = method.OwningType.IsValueType && !method.Signature.IsStatic;
vertex = writer.GetTuple(vertex,
writer.GetUnsignedConstant(_externalReferences.GetIndex(
factory.MethodEntrypoint(method.GetCanonMethodTarget(CanonicalFormKind.Specific), useUnboxingStub))));
}
if ((flags & InvokeTableFlags.NeedsParameterInterpretation) == 0)
{
MethodDesc canonInvokeStubMethod = factory.MetadataManager.GetCanonicalReflectionInvokeStub(method);
if (canonInvokeStubMethod.IsSharedByGenericInstantiations)
{
vertex = writer.GetTuple(vertex,
writer.GetUnsignedConstant(((uint)factory.MetadataManager.DynamicInvokeTemplateData.GetIdForMethod(canonInvokeStubMethod) << 1) | 1));
}
else
{
vertex = writer.GetTuple(vertex,
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.MethodEntrypoint(canonInvokeStubMethod)) << 1));
}
}
if ((flags & InvokeTableFlags.IsGenericMethod) != 0)
{
if ((flags & InvokeTableFlags.IsUniversalCanonicalEntry) != 0)
{
var nameAndSigGenericMethod = factory.NativeLayout.PlacedSignatureVertex(factory.NativeLayout.MethodNameAndSignatureVertex(method));
vertex = writer.GetTuple(vertex, writer.GetUnsignedConstant((uint)nameAndSigGenericMethod.SavedVertex.VertexOffset));
}
else if ((flags & InvokeTableFlags.RequiresInstArg) == 0 || (flags & InvokeTableFlags.HasEntrypoint) == 0)
{
VertexSequence args = new VertexSequence();
for (int i = 0; i < method.Instantiation.Length; i++)
{
uint argId = _externalReferences.GetIndex(factory.NecessaryTypeSymbol(method.Instantiation[i]));
args.Append(writer.GetUnsignedConstant(argId));
}
vertex = writer.GetTuple(vertex, args);
}
else
{
uint dictionaryId = _externalReferences.GetIndex(factory.MethodGenericDictionary(method));
vertex = writer.GetTuple(vertex, writer.GetUnsignedConstant(dictionaryId));
}
}
int hashCode = method.GetCanonMethodTarget(CanonicalFormKind.Specific).OwningType.GetHashCode();
typeMapHashTable.Append((uint)hashCode, hashTableSection.Place(vertex));
}
byte[] hashTableBytes = writer.Save();
_endSymbol.SetSymbolOffset(hashTableBytes.Length);
return(new ObjectData(hashTableBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}