/// <summary>
/// Try to look up field access info for given canon in metadata blobs for all available modules.
/// </summary>
/// <param name="metadataReader">Metadata reader for the declaring type</param>
/// <param name="declaringTypeHandle">Declaring type for the method</param>
/// <param name="fieldHandle">Field handle</param>
/// <param name="canonFormKind">Canonical form to use</param>
/// <param name="fieldAccessMetadata">Output - metadata information for field accessor construction</param>
/// <returns>true when found, false otherwise</returns>
private unsafe static bool TryGetFieldAccessMetadataFromFieldAccessMap(
MetadataReader metadataReader,
RuntimeTypeHandle declaringTypeHandle,
FieldHandle fieldHandle,
CanonicalFormKind canonFormKind,
ref FieldAccessMetadata fieldAccessMetadata)
{
CanonicallyEquivalentEntryLocator canonWrapper = new CanonicallyEquivalentEntryLocator(declaringTypeHandle, canonFormKind);
TypeManagerHandle fieldHandleModule = ModuleList.Instance.GetModuleForMetadataReader(metadataReader);
bool isDynamicType = RuntimeAugments.IsDynamicType(declaringTypeHandle);
string fieldName = null;
RuntimeTypeHandle declaringTypeHandleDefinition = Instance.GetTypeDefinition(declaringTypeHandle);
foreach (NativeFormatModuleInfo mappingTableModule in ModuleList.EnumerateModules(RuntimeAugments.GetModuleFromTypeHandle(declaringTypeHandle)))
{
NativeReader fieldMapReader;
if (!TryGetNativeReaderForBlob(mappingTableModule, ReflectionMapBlob.FieldAccessMap, out fieldMapReader))
{
continue;
}
NativeParser fieldMapParser = new NativeParser(fieldMapReader, 0);
NativeHashtable fieldHashtable = new NativeHashtable(fieldMapParser);
ExternalReferencesTable externalReferences = default(ExternalReferencesTable);
if (!externalReferences.InitializeCommonFixupsTable(mappingTableModule))
{
continue;
}
var lookup = fieldHashtable.Lookup(canonWrapper.LookupHashCode);
NativeParser entryParser;
while (!(entryParser = lookup.GetNext()).IsNull)
{
// Grammar of a hash table entry:
// Flags + DeclaringType + MdHandle or Name + Cookie or Ordinal or Offset
FieldTableFlags entryFlags = (FieldTableFlags)entryParser.GetUnsigned();
if ((canonFormKind == CanonicalFormKind.Universal) != ((entryFlags & FieldTableFlags.IsUniversalCanonicalEntry) != 0))
{
continue;
}
RuntimeTypeHandle entryDeclaringTypeHandle = externalReferences.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
if (!entryDeclaringTypeHandle.Equals(declaringTypeHandle) &&
!canonWrapper.IsCanonicallyEquivalent(entryDeclaringTypeHandle))
{
continue;
}
if ((entryFlags & FieldTableFlags.HasMetadataHandle) != 0)
{
Handle entryFieldHandle = (((int)HandleType.Field << 24) | (int)entryParser.GetUnsigned()).AsHandle();
if (!fieldHandle.Equals(entryFieldHandle))
{
continue;
}
}
else
{
if (fieldName == null)
{
QTypeDefinition qTypeDefinition;
bool success = Instance.TryGetMetadataForNamedType(
declaringTypeHandleDefinition,
out qTypeDefinition);
Debug.Assert(success);
MetadataReader nativeFormatMetadataReader = qTypeDefinition.NativeFormatReader;
fieldName = nativeFormatMetadataReader.GetString(fieldHandle.GetField(nativeFormatMetadataReader).Name);
}
string entryFieldName = entryParser.GetString();
if (fieldName != entryFieldName)
{
continue;
}
}
int fieldOffset = -1;
int threadStaticsStartOffset = -1;
IntPtr fieldAddressCookie = IntPtr.Zero;
if (canonFormKind == CanonicalFormKind.Universal)
{
if (!TypeLoaderEnvironment.Instance.TryGetFieldOffset(declaringTypeHandle, entryParser.GetUnsigned() /* field ordinal */, out fieldOffset))
{
Debug.Assert(false);
return(false);
}
}
else
{
if ((entryFlags & FieldTableFlags.StorageClass) == FieldTableFlags.ThreadStatic)
{
if ((entryFlags & FieldTableFlags.FieldOffsetEncodedDirectly) != 0)
{
if ((entryFlags & FieldTableFlags.IsAnyCanonicalEntry) == 0)
{
int rvaToThreadStaticFieldOffsets = (int)externalReferences.GetRvaFromIndex(entryParser.GetUnsigned());
fieldAddressCookie = RvaToNonGenericStaticFieldAddress(mappingTableModule.Handle, rvaToThreadStaticFieldOffsets);
threadStaticsStartOffset = *(int *)fieldAddressCookie.ToPointer();
}
fieldOffset = (int)entryParser.GetUnsigned();
}
else
{
int rvaToThreadStaticFieldOffsets = (int)externalReferences.GetRvaFromIndex(entryParser.GetUnsigned());
fieldAddressCookie = RvaToNonGenericStaticFieldAddress(mappingTableModule.Handle, rvaToThreadStaticFieldOffsets);
ThreadStaticFieldOffsets *pThreadStaticFieldOffsets = (ThreadStaticFieldOffsets *)fieldAddressCookie.ToPointer();
threadStaticsStartOffset = (int)pThreadStaticFieldOffsets->StartingOffsetInTlsBlock;
fieldOffset = (int)pThreadStaticFieldOffsets->FieldOffset;
}
}
else
{
if ((entryFlags & FieldTableFlags.FieldOffsetEncodedDirectly) != 0)
{
fieldOffset = (int)entryParser.GetUnsigned();
}
else
{
#if PROJECTN
fieldOffset = (int)externalReferences.GetRvaFromIndex(entryParser.GetUnsigned());
#else
fieldOffset = 0;
fieldAddressCookie = externalReferences.GetAddressFromIndex(entryParser.GetUnsigned());
if ((entryFlags & FieldTableFlags.IsGcSection) != 0)
{
fieldOffset = (int)entryParser.GetUnsigned();
}
#endif
}
}
}
if ((entryFlags & FieldTableFlags.StorageClass) == FieldTableFlags.ThreadStatic)
{
// TODO: CoreRT support
if (!entryDeclaringTypeHandle.Equals(declaringTypeHandle))
{
if (!TypeLoaderEnvironment.Instance.TryGetThreadStaticStartOffset(declaringTypeHandle, out threadStaticsStartOffset))
{
return(false);
}
}
fieldAddressCookie = new IntPtr(threadStaticsStartOffset);
}
fieldAccessMetadata.MappingTableModule = mappingTableModule.Handle;
fieldAccessMetadata.Cookie = fieldAddressCookie;
fieldAccessMetadata.Flags = entryFlags;
fieldAccessMetadata.Offset = fieldOffset;
return(true);
}
}
return(false);
}
private MethodNameAndSignature GetMethodNameAndSignatureFromNativeReader(NativeReader nativeLayoutReader, TypeManagerHandle moduleHandle, uint nativeLayoutOffset)
{
NativeParser parser = new NativeParser(nativeLayoutReader, nativeLayoutOffset);
string methodName = parser.GetString();
// Signatures are indirected to through a relative offset so that we don't have to parse them
// when not comparing signatures (parsing them requires resolving types and is tremendously
// expensive).
NativeParser sigParser = parser.GetParserFromRelativeOffset();
RuntimeSignature methodSig = RuntimeSignature.CreateFromNativeLayoutSignature(moduleHandle, sigParser.Offset);
return(new MethodNameAndSignature(methodName, methodSig));
}
/// <summary>
/// Try to look up field acccess info for given canon in metadata blobs for all available modules.
/// </summary>
/// <param name="metadataReader">Metadata reader for the declaring type</param>
/// <param name="declaringTypeHandle">Declaring type for the method</param>
/// <param name="fieldHandle">Field handle</param>
/// <param name="canonFormKind">Canonical form to use</param>
/// <param name="fieldAccessMetadata">Output - metadata information for field accessor construction</param>
/// <returns>true when found, false otherwise</returns>
private static bool TryGetFieldAccessMetadataFromFieldAccessMap(
MetadataReader metadataReader,
RuntimeTypeHandle declaringTypeHandle,
FieldHandle fieldHandle,
CanonicalFormKind canonFormKind,
ref FieldAccessMetadata fieldAccessMetadata)
{
CanonicallyEquivalentEntryLocator canonWrapper = new CanonicallyEquivalentEntryLocator(declaringTypeHandle, canonFormKind);
TypeManagerHandle fieldHandleModule = ModuleList.Instance.GetModuleForMetadataReader(metadataReader);
bool isDynamicType = RuntimeAugments.IsDynamicType(declaringTypeHandle);
string fieldName = null;
RuntimeTypeHandle declaringTypeHandleDefinition = Instance.GetTypeDefinition(declaringTypeHandle);
foreach (NativeFormatModuleInfo mappingTableModule in ModuleList.EnumerateModules(RuntimeAugments.GetModuleFromTypeHandle(declaringTypeHandle)))
{
NativeReader fieldMapReader;
if (!TryGetNativeReaderForBlob(mappingTableModule, ReflectionMapBlob.FieldAccessMap, out fieldMapReader))
{
continue;
}
NativeParser fieldMapParser = new NativeParser(fieldMapReader, 0);
NativeHashtable fieldHashtable = new NativeHashtable(fieldMapParser);
ExternalReferencesTable externalReferences = default(ExternalReferencesTable);
if (!externalReferences.InitializeCommonFixupsTable(mappingTableModule))
{
continue;
}
var lookup = fieldHashtable.Lookup(canonWrapper.LookupHashCode);
NativeParser entryParser;
while (!(entryParser = lookup.GetNext()).IsNull)
{
// Grammar of a hash table entry:
// Flags + DeclaringType + MdHandle or Name + Cookie or Ordinal or Offset
FieldTableFlags entryFlags = (FieldTableFlags)entryParser.GetUnsigned();
if ((canonFormKind == CanonicalFormKind.Universal) != entryFlags.HasFlag(FieldTableFlags.IsUniversalCanonicalEntry))
{
continue;
}
RuntimeTypeHandle entryDeclaringTypeHandle = externalReferences.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
if (!entryDeclaringTypeHandle.Equals(declaringTypeHandle) &&
!canonWrapper.IsCanonicallyEquivalent(entryDeclaringTypeHandle))
{
continue;
}
if (entryFlags.HasFlag(FieldTableFlags.HasMetadataHandle))
{
Handle entryFieldHandle = (((int)HandleType.Field << 24) | (int)entryParser.GetUnsigned()).AsHandle();
if (!fieldHandle.Equals(entryFieldHandle))
{
continue;
}
}
else
{
if (fieldName == null)
{
QTypeDefinition qTypeDefinition;
bool success = Instance.TryGetMetadataForNamedType(
declaringTypeHandleDefinition,
out qTypeDefinition);
Debug.Assert(success);
MetadataReader nativeFormatMetadataReader = qTypeDefinition.NativeFormatReader;
fieldName = nativeFormatMetadataReader.GetString(fieldHandle.GetField(nativeFormatMetadataReader).Name);
}
string entryFieldName = entryParser.GetString();
if (fieldName != entryFieldName)
{
continue;
}
}
int cookieOrOffsetOrOrdinal = (int)entryParser.GetUnsigned();
int fieldOffset;
IntPtr fieldAddressCookie = IntPtr.Zero;
if (canonFormKind == CanonicalFormKind.Universal)
{
if (!TypeLoaderEnvironment.Instance.TryGetFieldOffset(declaringTypeHandle, (uint)cookieOrOffsetOrOrdinal, out fieldOffset))
{
Debug.Assert(false);
return(false);
}
}
else
{
#if CORERT
fieldOffset = cookieOrOffsetOrOrdinal;
#else
fieldOffset = (int)externalReferences.GetRvaFromIndex((uint)cookieOrOffsetOrOrdinal);
#endif
}
if ((entryFlags & FieldTableFlags.StorageClass) == FieldTableFlags.ThreadStatic)
{
if (canonFormKind != CanonicalFormKind.Universal)
{
fieldAddressCookie = RvaToNonGenericStaticFieldAddress(mappingTableModule.Handle, fieldOffset);
}
if (!entryDeclaringTypeHandle.Equals(declaringTypeHandle))
{
// In this case we didn't find an exact match, but we did find a canonically equivalent match
// We might be in the dynamic type case, or the canonically equivalent, but not the same case.
if (!RuntimeAugments.IsDynamicType(declaringTypeHandle))
{
int offsetToCreateCookieFor = fieldOffset;
// We're working with a statically generated type, but we didn't find an exact match in the tables
if (canonFormKind != CanonicalFormKind.Universal)
{
offsetToCreateCookieFor = checked ((int)TypeLoaderEnvironment.GetThreadStaticTypeOffsetFromThreadStaticCookie(fieldAddressCookie));
}
fieldAddressCookie = TypeLoaderEnvironment.Instance.TryGetThreadStaticFieldOffsetCookieForTypeAndFieldOffset(declaringTypeHandle, checked ((uint)offsetToCreateCookieFor));
}
}
}
fieldAccessMetadata.MappingTableModule = mappingTableModule.Handle;
fieldAccessMetadata.Cookie = fieldAddressCookie;
fieldAccessMetadata.Flags = entryFlags;
fieldAccessMetadata.Offset = fieldOffset;
return(true);
}
}
return(false);
}
public static RuntimeTypeHandle GetTypeFromNativeLayoutSignature(ref NativeParser parser, TypeManagerHandle moduleHandle, uint offset)
{
RuntimeTypeHandle typeHandle;
parser.Offset = offset;
TypeLoaderEnvironment.Instance.GetTypeFromSignatureAndContext(ref parser, moduleHandle, null, null, out typeHandle);
return(typeHandle);
}
/// <summary>
/// Construct the underlying module info enumerator used to iterate the module map
/// </summary>
/// <param name="moduleMap">Module map to enumerate</param>
/// <param name="preferredModuleHandle">Optional module handle to enumerate first</param>
internal ModuleHandleEnumerator(ModuleMap moduleMap, TypeManagerHandle preferredModuleHandle)
{
_moduleInfoEnumerator = new ModuleInfoEnumerator(moduleMap, preferredModuleHandle);
}
/// <summary>
/// Construct the underlying module info enumerator used to iterate the module map
/// </summary>
/// <param name="moduleMap">Module map to enumerate</param>
/// <param name="preferredModuleHandle">Optional module handle to enumerate first</param>
internal MetadataReaderEnumerator(ModuleMap moduleMap, TypeManagerHandle preferredModuleHandle)
{
_moduleInfoEnumerator = new NativeFormatModuleInfoEnumerator(moduleMap, preferredModuleHandle);
}
/// <summary>
/// Enumerate modules. Specify a module that should be enumerated first
/// - this is used as an optimization in cases when a certain binary module is more probable
/// to contain a certain information.
/// </summary>
/// <param name="preferredModule">Handle to the module which should be enumerated first</param>
public static NativeFormatModuleInfoEnumerable EnumerateModules(TypeManagerHandle preferredModule)
{
return(new NativeFormatModuleInfoEnumerable(Instance._loadedModuleMap, preferredModule));
}
/// <summary>
/// Initialize module info and construct per-module metadata reader.
/// </summary>
/// <param name="moduleHandle">Handle (address) of module to initialize</param>
internal NativeFormatModuleInfo(TypeManagerHandle moduleHandle, ModuleType moduleType, IntPtr pBlob, int cbBlob) : base(moduleHandle, moduleType)
{
MetadataReader = new MetadataReader((IntPtr)pBlob, (int)cbBlob);
}
/// <summary>
/// Initialize module info and construct per-module metadata reader.
/// </summary>
/// <param name="moduleHandle">Handle (address) of module to initialize</param>
internal EcmaModuleInfo(TypeManagerHandle moduleHandle, PEReader pe, MetadataReader reader)
: base(moduleHandle, ModuleType.Ecma)
{
PE = pe;
MetadataReader = reader;
}
/// <summary>
/// Locate module info for a given module. Fail if not found or before the module registry
/// gets initialized. Must only be called for modules described as native format (not the mrt module, or an ECMA module)
/// </summary>
/// <param name="moduleHandle">Handle of module to look up</param>
public NativeFormatModuleInfo GetModuleInfoByHandle(TypeManagerHandle moduleHandle)
{
ModuleMap moduleMap = _loadedModuleMap;
return((NativeFormatModuleInfo)moduleMap.Modules[moduleMap.HandleToModuleIndex[moduleHandle]]);
}
internal override bool MatchParsedEntry(ref NativeParser entryParser, ref ExternalReferencesTable externalReferencesLookup, TypeManagerHandle moduleHandle)
{
// Compare entry with inputs as we parse it. If we get a mismatch, stop parsing and move to the next entry...
RuntimeTypeHandle parsedDeclaringTypeHandle = externalReferencesLookup.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
if (!parsedDeclaringTypeHandle.Equals(_declaringType))
{
return(false);
}
// Hash table names / sigs are indirected through to the native layout info
MethodNameAndSignature nameAndSignature;
if (!TypeLoaderEnvironment.Instance.TryGetMethodNameAndSignatureFromNativeLayoutOffset(moduleHandle, entryParser.GetUnsigned(), out nameAndSignature))
{
return(false);
}
if (!nameAndSignature.Equals(_nameAndSignature))
{
return(false);
}
int parsedArity = (int)entryParser.GetSequenceCount();
int lookupArity = (_methodToLookup != null ? _methodToLookup.Instantiation.Length : _genericMethodArgumentHandles.Length);
if (parsedArity != lookupArity)
{
return(false);
}
for (int i = 0; i < parsedArity; i++)
{
RuntimeTypeHandle parsedArg = externalReferencesLookup.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
RuntimeTypeHandle lookupArg = (_methodToLookup != null ? _methodToLookup.Instantiation[i].RuntimeTypeHandle : _genericMethodArgumentHandles[i]);
if (!parsedArg.Equals(lookupArg))
{
return(false);
}
}
return(true);
}
internal override bool MatchParsedEntry(ref NativeParser entryParser, ref ExternalReferencesTable externalReferencesLookup, TypeManagerHandle moduleHandle)
{
//
// Entries read from the hashtable are loaded as GenericMethodDescs, and compared to the input.
// This lookup is slower than the lookups using RuntimeTypeHandles, but can handle cases where we don't have
// RuntimeTypeHandle values for all of the components of the input GenericMethodDesc, but still need to look it up in case the
// method dictionary statically really exists
//
TypeSystemContext context = _methodToLookup.Context;
RuntimeTypeHandle parsedDeclaringTypeHandle = externalReferencesLookup.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
// Hash table names / sigs are indirected through to the native layout info
MethodNameAndSignature nameAndSignature;
if (!TypeLoaderEnvironment.Instance.TryGetMethodNameAndSignatureFromNativeLayoutOffset(moduleHandle, entryParser.GetUnsigned(), out nameAndSignature))
{
return(false);
}
RuntimeTypeHandle[] parsedArgsHandles = GetTypeSequence(ref externalReferencesLookup, ref entryParser);
DefType parsedDeclaringType = context.ResolveRuntimeTypeHandle(parsedDeclaringTypeHandle) as DefType;
Instantiation parsedArgs = context.ResolveRuntimeTypeHandles(parsedArgsHandles);
InstantiatedMethod parsedGenericMethod = (InstantiatedMethod)context.ResolveGenericMethodInstantiation(false, parsedDeclaringType, nameAndSignature, parsedArgs, IntPtr.Zero, false);
return(parsedGenericMethod == _methodToLookup);
}
internal abstract bool MatchParsedEntry(ref NativeParser entryParser, ref ExternalReferencesTable externalReferencesLookup, TypeManagerHandle moduleHandle);
private object TryParseNativeSignatureWorker(TypeSystemContext typeSystemContext, TypeManagerHandle moduleHandle, ref NativeParser parser, RuntimeTypeHandle[] typeGenericArgumentHandles, RuntimeTypeHandle[] methodGenericArgumentHandles, bool isMethodSignature)
{
Instantiation typeGenericArguments = typeSystemContext.ResolveRuntimeTypeHandles(typeGenericArgumentHandles ?? Array.Empty<RuntimeTypeHandle>());
Instantiation methodGenericArguments = typeSystemContext.ResolveRuntimeTypeHandles(methodGenericArgumentHandles ?? Array.Empty<RuntimeTypeHandle>());
NativeLayoutInfoLoadContext nativeLayoutContext = new NativeLayoutInfoLoadContext();
nativeLayoutContext._module = ModuleList.GetModuleInfoByHandle(moduleHandle);
nativeLayoutContext._typeSystemContext = typeSystemContext;
nativeLayoutContext._typeArgumentHandles = typeGenericArguments;
nativeLayoutContext._methodArgumentHandles = methodGenericArguments;
if (isMethodSignature)
return nativeLayoutContext.GetMethod(ref parser);
else
return nativeLayoutContext.GetType(ref parser);
}
/// <summary>
/// Enumerate metadata readers. Specify a module that should be enumerated first
/// - this is used as an optimization in cases when a certain binary module is more probable
/// to contain a certain information.
/// </summary>
/// <param name="preferredModule">Handle to the module which should be enumerated first</param>
public static MetadataReaderEnumerable EnumerateMetadataReaders(TypeManagerHandle preferredModule)
{
return(new MetadataReaderEnumerable(Instance._loadedModuleMap, preferredModule));
}
public static unsafe bool FindBlob(TypeManagerHandle typeManager, int blobId, IntPtr ppbBlob, IntPtr pcbBlob)
{
return(RuntimeImports.RhFindBlob(typeManager, (uint)blobId, (byte **)ppbBlob, (uint *)pcbBlob));
}
/// <summary>
/// Enumerate module handles (simplified version for code that only needs the module addresses).
/// Specify a module that should be enumerated first
/// - this is used as an optimization in cases when a certain binary module is more probable
/// to contain a certain information.
/// </summary>
/// <param name="preferredModule">Handle to the module which should be enumerated first</param>
public static ModuleHandleEnumerable Enumerate(TypeManagerHandle preferredModule)
{
return(new ModuleHandleEnumerable(Instance._loadedModuleMap, preferredModule));
}
/// <summary>
/// Store module map and preferred module to pass to the enumerator upon construction.
/// </summary>
/// <param name="moduleMap">Module map to enumerate</param>
/// <param name="preferredModuleHandle">Optional module handle to enumerate first</param>
internal NativeFormatModuleInfoEnumerable(ModuleMap moduleMap, TypeManagerHandle preferredModuleHandle)
{
_moduleMap = moduleMap;
_preferredModuleHandle = preferredModuleHandle;
}
/// <summary>
/// Resolve a given 32-bit integer (staticFieldRVA) representing a static field address.
/// For "local" static fields residing in the module given by moduleHandle, staticFieldRVA
/// directly contains the RVA of the static field. For remote static fields residing in other
/// modules, staticFieldRVA has the highest bit set (FieldAccessFlags.RemoteStaticFieldRVA)
/// and it contains the RVA of a RemoteStaticFieldDescriptor structure residing in the module
/// given by moduleHandle that holds a pointer to the indirection cell
/// of the remote static field and its offset within the cell.
/// </summary>
/// <param name="moduleHandle">Reference module handle used for static field lookup</param>
/// <param name="staticFieldRVA">
/// RVA of static field for local fields; for remote fields, RVA of a RemoteStaticFieldDescriptor
/// structure for the field or-ed with the FieldAccessFlags.RemoteStaticFieldRVA bit
/// </param>
public static unsafe IntPtr RvaToNonGenericStaticFieldAddress(TypeManagerHandle moduleHandle, int staticFieldRVA)
{
// TODO: implement for CoreRT
throw new NotImplementedException();
}
/// <summary>
/// Store module map and preferred module to pass to the enumerator upon construction.
/// </summary>
/// <param name="moduleMap">Module map to enumerate</param>
/// <param name="preferredModuleHandle">Optional module handle to enumerate first</param>
internal MetadataReaderEnumerable(ModuleMap moduleMap, TypeManagerHandle preferredModuleHandle)
{
_moduleMap = moduleMap;
_preferredModuleHandle = preferredModuleHandle;
}
private bool CompareTypeSigWithType(ref NativeParser parser, TypeManagerHandle moduleHandle, Handle typeHandle)
{
while (typeHandle.HandleType == HandleType.TypeSpecification)
{
typeHandle = typeHandle
.ToTypeSpecificationHandle(_metadataReader)
.GetTypeSpecification(_metadataReader)
.Signature;
}
// startOffset lets us backtrack to the TypeSignatureKind for external types since the TypeLoader
// expects to read it in.
uint startOffset = parser.Offset;
uint data;
var typeSignatureKind = parser.GetTypeSignatureKind(out data);
switch (typeSignatureKind)
{
case TypeSignatureKind.Lookback:
{
NativeParser lookbackParser = parser.GetLookbackParser(data);
return(CompareTypeSigWithType(ref lookbackParser, moduleHandle, typeHandle));
}
case TypeSignatureKind.Modifier:
{
// Ensure the modifier kind (vector, pointer, byref) is the same
TypeModifierKind modifierKind = (TypeModifierKind)data;
switch (modifierKind)
{
case TypeModifierKind.Array:
if (typeHandle.HandleType == HandleType.SZArraySignature)
{
return(CompareTypeSigWithType(ref parser, moduleHandle, typeHandle
.ToSZArraySignatureHandle(_metadataReader)
.GetSZArraySignature(_metadataReader)
.ElementType));
}
return(false);
case TypeModifierKind.ByRef:
if (typeHandle.HandleType == HandleType.ByReferenceSignature)
{
return(CompareTypeSigWithType(ref parser, moduleHandle, typeHandle
.ToByReferenceSignatureHandle(_metadataReader)
.GetByReferenceSignature(_metadataReader)
.Type));
}
return(false);
case TypeModifierKind.Pointer:
if (typeHandle.HandleType == HandleType.PointerSignature)
{
return(CompareTypeSigWithType(ref parser, moduleHandle, typeHandle
.ToPointerSignatureHandle(_metadataReader)
.GetPointerSignature(_metadataReader)
.Type));
}
return(false);
default:
Debug.Assert(null == "invalid type modifier kind");
return(false);
}
}
case TypeSignatureKind.Variable:
{
bool isMethodVar = (data & 0x1) == 1;
uint index = data >> 1;
if (isMethodVar)
{
if (typeHandle.HandleType == HandleType.MethodTypeVariableSignature)
{
return(index == typeHandle
.ToMethodTypeVariableSignatureHandle(_metadataReader)
.GetMethodTypeVariableSignature(_metadataReader)
.Number);
}
}
else
{
if (typeHandle.HandleType == HandleType.TypeVariableSignature)
{
return(index == typeHandle
.ToTypeVariableSignatureHandle(_metadataReader)
.GetTypeVariableSignature(_metadataReader)
.Number);
}
}
return(false);
}
case TypeSignatureKind.MultiDimArray:
{
if (typeHandle.HandleType != HandleType.ArraySignature)
{
return(false);
}
ArraySignature sig = typeHandle
.ToArraySignatureHandle(_metadataReader)
.GetArraySignature(_metadataReader);
if (data != sig.Rank)
{
return(false);
}
if (!CompareTypeSigWithType(ref parser, moduleHandle, sig.ElementType))
{
return(false);
}
uint boundCount1 = parser.GetUnsigned();
for (uint i = 0; i < boundCount1; i++)
{
parser.GetUnsigned();
}
uint lowerBoundCount1 = parser.GetUnsigned();
for (uint i = 0; i < lowerBoundCount1; i++)
{
parser.GetUnsigned();
}
break;
}
case TypeSignatureKind.FunctionPointer:
{
// callingConvention is in data
uint argCount1 = parser.GetUnsigned();
for (uint i = 0; i < argCount1; i++)
{
if (!CompareTypeSigWithType(ref parser, moduleHandle, typeHandle))
{
return(false);
}
}
return(false);
}
case TypeSignatureKind.Instantiation:
{
if (typeHandle.HandleType != HandleType.TypeInstantiationSignature)
{
return(false);
}
TypeInstantiationSignature sig = typeHandle
.ToTypeInstantiationSignatureHandle(_metadataReader)
.GetTypeInstantiationSignature(_metadataReader);
if (!CompareTypeSigWithType(ref parser, moduleHandle, sig.GenericType))
{
return(false);
}
uint genericArgIndex = 0;
foreach (Handle genericArgumentTypeHandle in sig.GenericTypeArguments)
{
if (genericArgIndex >= data)
{
// The metadata generic has more parameters than the native layour
return(false);
}
if (!CompareTypeSigWithType(ref parser, moduleHandle, genericArgumentTypeHandle))
{
return(false);
}
genericArgIndex++;
}
// Make sure all generic parameters have been matched
return(genericArgIndex == data);
}
case TypeSignatureKind.BuiltIn:
case TypeSignatureKind.External:
{
RuntimeTypeHandle type2;
switch (typeHandle.HandleType)
{
case HandleType.TypeDefinition:
if (!TypeLoaderEnvironment.Instance.TryGetNamedTypeForMetadata(
new QTypeDefinition(_metadataReader, typeHandle.ToTypeDefinitionHandle(_metadataReader)), out type2))
{
return(false);
}
break;
case HandleType.TypeReference:
if (!TypeLoaderEnvironment.TryResolveNamedTypeForTypeReference(
_metadataReader, typeHandle.ToTypeReferenceHandle(_metadataReader), out type2))
{
return(false);
}
break;
default:
return(false);
}
RuntimeTypeHandle type1 = default(RuntimeTypeHandle);
if (typeSignatureKind == TypeSignatureKind.External)
{
type1 = SigParsing.GetTypeFromNativeLayoutSignature(ref parser, moduleHandle, startOffset);
}
else
{
type1 = ((Internal.TypeSystem.WellKnownType)data).GetRuntimeTypeHandle();
}
return(type1.Equals(type2));
}
default:
return(false);
}
return(true);
}
/// <summary>
/// Register all modules which were added (Registered) to the runtime and are not already registered with the TypeLoader.
/// </summary>
/// <param name="moduleType">Type to assign to all new modules.</param>
public void RegisterNewModules(ModuleType moduleType)
{
// prevent multiple threads from registering modules concurrently
using (LockHolder.Hold(_moduleRegistrationLock))
{
// Fetch modules that have already been registered with the runtime
int loadedModuleCount = RuntimeAugments.GetLoadedModules(null);
TypeManagerHandle[] loadedModuleHandles = new TypeManagerHandle[loadedModuleCount];
int loadedModuleCountUpdated = RuntimeAugments.GetLoadedModules(loadedModuleHandles);
Debug.Assert(loadedModuleCount == loadedModuleCountUpdated);
LowLevelList <TypeManagerHandle> newModuleHandles = new LowLevelList <TypeManagerHandle>(loadedModuleHandles.Length);
foreach (TypeManagerHandle moduleHandle in loadedModuleHandles)
{
// Skip already registered modules.
int oldModuleIndex;
if (_loadedModuleMap.HandleToModuleIndex.TryGetValue(moduleHandle, out oldModuleIndex))
{
continue;
}
newModuleHandles.Add(moduleHandle);
}
// Copy existing modules to new dictionary
int oldModuleCount = _loadedModuleMap.Modules.Length;
ModuleInfo[] updatedModules = new ModuleInfo[oldModuleCount + newModuleHandles.Count];
if (oldModuleCount > 0)
{
Array.Copy(_loadedModuleMap.Modules, 0, updatedModules, 0, oldModuleCount);
}
for (int newModuleIndex = 0; newModuleIndex < newModuleHandles.Count; newModuleIndex++)
{
ModuleInfo newModuleInfo;
unsafe
{
byte *pBlob;
uint cbBlob;
if (RuntimeAugments.FindBlob(newModuleHandles[newModuleIndex], (int)ReflectionMapBlob.EmbeddedMetadata, new IntPtr(&pBlob), new IntPtr(&cbBlob)))
{
newModuleInfo = new NativeFormatModuleInfo(newModuleHandles[newModuleIndex], moduleType, (IntPtr)pBlob, (int)cbBlob);
}
else
{
newModuleInfo = new ModuleInfo(newModuleHandles[newModuleIndex], moduleType);
}
}
updatedModules[oldModuleCount + newModuleIndex] = newModuleInfo;
if (_moduleRegistrationCallbacks != null)
{
_moduleRegistrationCallbacks(newModuleInfo);
}
}
// Atomically update the module map
_loadedModuleMap = new ModuleMap(updatedModules);
}
}
public abstract IntPtr GetThreadStaticGCDescForDynamicType(TypeManagerHandle handle, int index);
