/// <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)
{
// 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 fieldMapHashTable = new VertexHashtable();
Section hashTableSection = writer.NewSection();
hashTableSection.Place(fieldMapHashTable);
foreach (var fieldMapping in factory.MetadataManager.GetFieldMapping(factory))
{
FieldDesc field = fieldMapping.Entity;
if (field.IsLiteral || field.HasRva)
{
continue;
}
FieldTableFlags flags;
if (field.IsThreadStatic)
{
flags = FieldTableFlags.ThreadStatic;
}
else if (field.IsStatic)
{
flags = FieldTableFlags.Static;
if (field.HasGCStaticBase)
{
flags |= FieldTableFlags.IsGcSection;
}
if (field.OwningType.HasInstantiation)
{
flags |= FieldTableFlags.FieldOffsetEncodedDirectly;
}
}
else
{
flags = FieldTableFlags.Instance | FieldTableFlags.FieldOffsetEncodedDirectly;
}
if (fieldMapping.MetadataHandle != 0)
{
flags |= FieldTableFlags.HasMetadataHandle;
}
if (field.OwningType.IsCanonicalSubtype(CanonicalFormKind.Universal))
{
flags |= FieldTableFlags.IsUniversalCanonicalEntry;
}
// Grammar of a hash table entry:
// Flags + DeclaringType + MdHandle or Name + Cookie or Ordinal or Offset
Vertex vertex = writer.GetUnsignedConstant((uint)flags);
uint declaringTypeId = _externalReferences.GetIndex(factory.NecessaryTypeSymbol(field.OwningType));
vertex = writer.GetTuple(vertex,
writer.GetUnsignedConstant(declaringTypeId));
if ((flags & FieldTableFlags.HasMetadataHandle) != 0)
{
// Only store the offset portion of the metadata handle to get better integer compression
vertex = writer.GetTuple(vertex,
writer.GetUnsignedConstant((uint)(fieldMapping.MetadataHandle & MetadataManager.MetadataOffsetMask)));
}
else
{
// No metadata handle means we need to store name
vertex = writer.GetTuple(vertex,
writer.GetStringConstant(field.Name));
}
if ((flags & FieldTableFlags.IsUniversalCanonicalEntry) != 0)
{
// TODO: USG
continue;
}
else
{
switch (flags & FieldTableFlags.StorageClass)
{
case FieldTableFlags.ThreadStatic:
// TODO: thread statics
continue;
case FieldTableFlags.Static:
{
if (field.OwningType.HasInstantiation)
{
vertex = writer.GetTuple(vertex, writer.GetUnsignedConstant((uint)(field.Offset.AsInt)));
}
else
{
MetadataType metadataType = (MetadataType)field.OwningType;
ISymbolNode staticsNode = field.HasGCStaticBase ?
factory.TypeGCStaticsSymbol(metadataType) :
factory.TypeNonGCStaticsSymbol(metadataType);
if (!field.HasGCStaticBase || factory.Target.Abi == TargetAbi.ProjectN)
{
uint index = _externalReferences.GetIndex(staticsNode, field.Offset.AsInt);
vertex = writer.GetTuple(vertex, writer.GetUnsignedConstant(index));
}
else
{
Debug.Assert(field.HasGCStaticBase && factory.Target.Abi == TargetAbi.CoreRT);
uint index = _externalReferences.GetIndex(staticsNode);
vertex = writer.GetTuple(vertex, writer.GetUnsignedConstant(index));
vertex = writer.GetTuple(vertex, writer.GetUnsignedConstant((uint)(field.Offset.AsInt)));
}
}
}
break;
case FieldTableFlags.Instance:
vertex = writer.GetTuple(vertex, writer.GetUnsignedConstant((uint)field.Offset.AsInt));
break;
}
}
int hashCode = field.OwningType.ConvertToCanonForm(CanonicalFormKind.Specific).GetHashCode();
fieldMapHashTable.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 structEntry in ((CompilerGeneratedInteropStubManager)factory.InteropStubManager).GetStructMarshallingTypes())
{
// the order of data written is as follows:
// 0. managed struct type
// 1. struct marshalling thunk
// 2. struct unmarshalling thunk
// 3. struct cleanup thunk
// 4. size
// 5. NumFields<< 1 | HasInvalidLayout
// 6 for each field
// a. name
// b. offset
var structType = structEntry.StructType;
var nativeType = structEntry.NativeStructType;
Vertex thunks = writer.GetTuple(
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.MethodEntrypoint(structEntry.MarshallingThunk))),
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.MethodEntrypoint(structEntry.UnmarshallingThunk))),
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.MethodEntrypoint(structEntry.CleanupThunk))));
uint size = (uint)nativeType.InstanceByteCount.AsInt;
uint mask = (uint)(nativeType.Fields.Length << 1) | (uint)(nativeType.HasInvalidLayout ? 1 : 0);
Vertex data = writer.GetTuple(
thunks,
writer.GetUnsignedConstant(size),
writer.GetUnsignedConstant(mask)
);
for (int i = 0; i < nativeType.Fields.Length; i++)
{
data = writer.GetTuple(
data,
writer.GetStringConstant(nativeType.Fields[i].Name),
writer.GetUnsignedConstant((uint)nativeType.Fields[i].Offset.AsInt)
);
}
Vertex vertex = writer.GetTuple(
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.NecessaryTypeSymbol(structType))),
data
);
int hashCode = structType.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 structType in factory.MetadataManager.GetTypesWithStructMarshalling())
{
// the order of data written is as follows:
// managed struct type
// NumFields<< 2 | (HasInvalidLayout ? (2:0)) | (MarshallingRequired ? (1:0))
// If MarshallingRequired:
// size
// struct marshalling thunk
// struct unmarshalling thunk
// struct cleanup thunk
// For each field field:
// name
// offset
var nativeType = _interopStateManager.GetStructMarshallingNativeType(structType);
Vertex marshallingData = null;
if (MarshalHelpers.IsStructMarshallingRequired(structType))
{
Vertex thunks = writer.GetTuple(
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.MethodEntrypoint(_interopStateManager.GetStructMarshallingManagedToNativeThunk(structType)))),
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.MethodEntrypoint(_interopStateManager.GetStructMarshallingNativeToManagedThunk(structType)))),
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.MethodEntrypoint(_interopStateManager.GetStructMarshallingCleanupThunk(structType)))));
uint size = (uint)nativeType.InstanceFieldSize.AsInt;
marshallingData = writer.GetTuple(writer.GetUnsignedConstant(size), thunks);
}
Vertex fieldOffsetData = null;
for (int i = 0; i < nativeType.Fields.Length; i++)
{
var row = writer.GetTuple(
writer.GetStringConstant(nativeType.Fields[i].Name),
writer.GetUnsignedConstant((uint)nativeType.Fields[i].Offset.AsInt)
);
fieldOffsetData = (fieldOffsetData != null) ? writer.GetTuple(fieldOffsetData, row) : row;
}
uint mask = (uint)((marshallingData != null) ? InteropDataConstants.HasMarshallers : 0) |
(uint)(nativeType.HasInvalidLayout ? InteropDataConstants.HasInvalidLayout : 0) |
(uint)(nativeType.Fields.Length << InteropDataConstants.FieldCountShift);
Vertex data = writer.GetUnsignedConstant(mask);
if (marshallingData != null)
{
data = writer.GetTuple(data, marshallingData);
}
if (fieldOffsetData != null)
{
data = writer.GetTuple(data, fieldOffsetData);
}
Vertex vertex = writer.GetTuple(
writer.GetUnsignedConstant(_externalReferences.GetIndex(factory.NecessaryTypeSymbol(structType))),
data
);
int hashCode = structType.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 }));
}