private bool FindMatchingInterfaceSlot(IntPtr moduleHandle, NativeReader nativeLayoutReader, ref NativeParser entryParser, ref ExternalReferencesTable extRefs, ref RuntimeTypeHandle declaringType, ref MethodNameAndSignature methodNameAndSignature, RuntimeTypeHandle openTargetTypeHandle, RuntimeTypeHandle[] targetTypeInstantiation, bool variantDispatch)
{
uint numTargetImplementations = entryParser.GetUnsigned();
for (uint j = 0; j < numTargetImplementations; j++)
{
uint nameAndSigToken = extRefs.GetRvaFromIndex(entryParser.GetUnsigned());
MethodNameAndSignature targetMethodNameAndSignature = GetMethodNameAndSignatureFromNativeReader(nativeLayoutReader, nameAndSigToken);
RuntimeTypeHandle targetTypeHandle = extRefs.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
#if REFLECTION_EXECUTION_TRACE
ReflectionExecutionLogger.WriteLine(" Searching for GVM implementation on targe type = " + GetTypeNameDebug(targetTypeHandle));
#endif
uint numIfaceImpls = entryParser.GetUnsigned();
for (uint k = 0; k < numIfaceImpls; k++)
{
RuntimeTypeHandle implementingTypeHandle = extRefs.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
uint numIfaceSigs = entryParser.GetUnsigned();
if (!openTargetTypeHandle.Equals(implementingTypeHandle))
{
// Skip over signatures data
for (uint l = 0; l < numIfaceSigs; l++)
entryParser.GetUnsigned();
continue;
}
for (uint l = 0; l < numIfaceSigs; l++)
{
RuntimeTypeHandle currentIfaceTypeHandle = default(RuntimeTypeHandle);
NativeParser ifaceSigParser = new NativeParser(nativeLayoutReader, extRefs.GetRvaFromIndex(entryParser.GetUnsigned()));
IntPtr currentIfaceSigPtr = ifaceSigParser.Reader.OffsetToAddress(ifaceSigParser.Offset);
if (TypeLoaderEnvironment.Instance.GetTypeFromSignatureAndContext(currentIfaceSigPtr, targetTypeInstantiation, null, out currentIfaceTypeHandle, out currentIfaceSigPtr))
{
Debug.Assert(!currentIfaceTypeHandle.IsNull());
if ((!variantDispatch && declaringType.Equals(currentIfaceTypeHandle)) ||
(variantDispatch && RuntimeAugments.IsAssignableFrom(declaringType, currentIfaceTypeHandle)))
{
#if REFLECTION_EXECUTION_TRACE
ReflectionExecutionLogger.WriteLine(" " + (declaringType.Equals(currentIfaceTypeHandle) ? "Exact" : "Variant-compatible") + " match found on this target type!");
#endif
// We found the GVM slot target for the input interface GVM call, so let's update the interface GVM slot and return success to the caller
declaringType = targetTypeHandle;
methodNameAndSignature = targetMethodNameAndSignature;
return true;
}
}
}
}
}
return false;
}
private TypeDesc GetInstantiationType(ref NativeParser parser, uint arity)
{
DefType typeDefinition = (DefType)GetType(ref parser);
TypeDesc[] typeArguments = new TypeDesc[arity];
for (uint i = 0; i < arity; i++)
typeArguments[i] = GetType(ref parser);
return _typeSystemContext.ResolveGenericInstantiation(typeDefinition, new Instantiation(typeArguments));
}
private MethodNameAndSignature GetMethodNameAndSignatureFromNativeReader(NativeReader nativeLayoutReader, 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();
IntPtr methodSigPtr = sigParser.Reader.OffsetToAddress(sigParser.Offset);
return new MethodNameAndSignature(methodName, RuntimeMethodSignature.CreateFromNativeLayoutSignature(methodSigPtr));
}
public bool CompareMethodSignatures(RuntimeMethodSignature signature1, RuntimeMethodSignature signature2)
{
IntPtr nativeLayoutSignature1 = signature1.NativeLayoutSignature;
IntPtr nativeLayoutSignature2 = signature2.NativeLayoutSignature;
if ((nativeLayoutSignature1 != IntPtr.Zero) && (nativeLayoutSignature2 != IntPtr.Zero))
{
if (nativeLayoutSignature1 == nativeLayoutSignature2)
return true;
NativeReader reader1 = GetNativeLayoutInfoReader(RuntimeAugments.GetModuleFromPointer(nativeLayoutSignature1));
NativeParser parser1 = new NativeParser(reader1, reader1.AddressToOffset(nativeLayoutSignature1));
NativeReader reader2 = GetNativeLayoutInfoReader(RuntimeAugments.GetModuleFromPointer(nativeLayoutSignature2));
NativeParser parser2 = new NativeParser(reader2, reader2.AddressToOffset(nativeLayoutSignature2));
return CompareMethodSigs(parser1, parser2);
}
else if (nativeLayoutSignature1 != IntPtr.Zero)
{
int token = signature2.Token;
MetadataReader metadataReader = ModuleList.Instance.GetMetadataReaderForModule(signature2.ModuleHandle);
MethodSignatureComparer comparer = new MethodSignatureComparer(metadataReader, token.AsHandle().ToMethodHandle(metadataReader));
return comparer.IsMatchingNativeLayoutMethodSignature(nativeLayoutSignature1);
}
else if (nativeLayoutSignature2 != IntPtr.Zero)
{
int token = signature1.Token;
MetadataReader metadataReader = ModuleList.Instance.GetMetadataReaderForModule(signature1.ModuleHandle);
MethodSignatureComparer comparer = new MethodSignatureComparer(metadataReader, token.AsHandle().ToMethodHandle(metadataReader));
return comparer.IsMatchingNativeLayoutMethodSignature(nativeLayoutSignature2);
}
else
{
// For now, RuntimeMethodSignatures are only used to compare for method signature equality (along with their Name)
// So we can implement this with the simple equals check
if (signature1.Token != signature2.Token)
return false;
if (signature1.ModuleHandle != signature2.ModuleHandle)
return false;
return true;
}
}
private TypeDesc GetModifierType(ref NativeParser parser, TypeModifierKind modifier)
{
TypeDesc typeParameter = GetType(ref parser);
switch (modifier)
{
case TypeModifierKind.Array:
return _typeSystemContext.GetArrayType(typeParameter);
case TypeModifierKind.ByRef:
return _typeSystemContext.GetByRefType(typeParameter);
case TypeModifierKind.Pointer:
return _typeSystemContext.GetPointerType(typeParameter);
default:
parser.ThrowBadImageFormatException();
return null;
}
}
public uint GetGenericArgumentCountFromMethodNameAndSignature(MethodNameAndSignature signature)
{
if (signature.Signature.IsNativeLayoutSignature)
{
IntPtr sigPtr = signature.Signature.NativeLayoutSignature;
NativeReader reader = GetNativeLayoutInfoReader(RuntimeAugments.GetModuleFromPointer(sigPtr));
NativeParser parser = new NativeParser(reader, reader.AddressToOffset(sigPtr));
return GetGenericArgCountFromSig(parser);
}
else
{
var metadataReader = ModuleList.Instance.GetMetadataReaderForModule(signature.Signature.ModuleHandle);
var methodHandle = signature.Signature.Token.AsHandle().ToMethodHandle(metadataReader);
var method = methodHandle.GetMethod(metadataReader);
var methodSignature = method.Signature.GetMethodSignature(metadataReader);
return checked((uint)methodSignature.GenericParameterCount);
}
}
public unsafe bool TryGetMetadataForNamedType(RuntimeTypeHandle runtimeTypeHandle, out MetadataReader metadataReader, out TypeDefinitionHandle typeDefHandle)
{
// Iterate over all modules, starting with the module that defines the EEType
foreach (IntPtr moduleHandle in ModuleList.Enumerate(RuntimeAugments.GetModuleFromTypeHandle(runtimeTypeHandle)))
{
NativeReader typeMapReader;
if (TryGetNativeReaderForBlob(moduleHandle, ReflectionMapBlob.TypeMap, out typeMapReader))
{
NativeParser typeMapParser = new NativeParser(typeMapReader, 0);
NativeHashtable typeHashtable = new NativeHashtable(typeMapParser);
ExternalReferencesTable externalReferences = default(ExternalReferencesTable);
externalReferences.InitializeCommonFixupsTable(moduleHandle);
var lookup = typeHashtable.Lookup(runtimeTypeHandle.GetHashCode());
NativeParser entryParser;
while (!(entryParser = lookup.GetNext()).IsNull)
{
RuntimeTypeHandle foundType = externalReferences.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
if (foundType.Equals(runtimeTypeHandle))
{
Handle entryMetadataHandle = entryParser.GetUnsigned().AsHandle();
if (entryMetadataHandle.HandleType == HandleType.TypeDefinition)
{
metadataReader = ModuleList.Instance.GetMetadataReaderForModule(moduleHandle);
typeDefHandle = entryMetadataHandle.ToTypeDefinitionHandle(metadataReader);
return true;
}
}
}
}
}
metadataReader = null;
typeDefHandle = default(TypeDefinitionHandle);
return false;
}
/// <summary>
/// IF THESE SEMANTICS EVER CHANGE UPDATE THE LOGIC WHICH DEFINES THIS BEHAVIOR IN
/// THE DYNAMIC TYPE LOADER AS WELL AS THE COMPILER.
///
/// Parameter's are considered to have type layout dependent on their generic instantiation
/// if the type of the parameter in its signature is a type variable, or if the type is a generic
/// structure which meets 2 characteristics:
/// 1. Structure size/layout is affected by the size/layout of one or more of its generic parameters
/// 2. One or more of the generic parameters is a type variable, or a generic structure which also recursively
/// would satisfy constraint 2. (Note, that in the recursion case, whether or not the structure is affected
/// by the size/layout of its generic parameters is not investigated.)
///
/// Examples parameter types, and behavior.
///
/// T -> true
/// List<T> -> false
/// StructNotDependentOnArgsForSize<T> -> false
/// GenStructDependencyOnArgsForSize<T> -> true
/// StructNotDependentOnArgsForSize<GenStructDependencyOnArgsForSize<T>> -> true
/// StructNotDependentOnArgsForSize<GenStructDependencyOnArgsForSize<List<T>>>> -> false
///
/// Example non-parameter type behavior
/// T -> true
/// List<T> -> false
/// StructNotDependentOnArgsForSize<T> -> *true*
/// GenStructDependencyOnArgsForSize<T> -> true
/// StructNotDependentOnArgsForSize<GenStructDependencyOnArgsForSize<T>> -> true
/// StructNotDependentOnArgsForSize<GenStructDependencyOnArgsForSize<List<T>>>> -> false
/// </summary>
private bool TypeSignatureHasVarsNeedingCallingConventionConverter(ref NativeParser parser, TypeSystemContext context, HasVarsInvestigationLevel investigationLevel)
{
uint data;
var kind = parser.GetTypeSignatureKind(out data);
switch (kind)
{
case TypeSignatureKind.External: return false;
case TypeSignatureKind.Variable: return true;
case TypeSignatureKind.Lookback:
{
var lookbackParser = parser.GetLookbackParser(data);
return TypeSignatureHasVarsNeedingCallingConventionConverter(ref lookbackParser, context, investigationLevel);
}
case TypeSignatureKind.Instantiation:
{
RuntimeTypeHandle genericTypeDef;
if (!TryGetTypeFromSimpleTypeSignature(ref parser, out genericTypeDef))
{
Debug.Assert(false);
return true; // Returning true will prevent further reading from the native parser
}
if (!RuntimeAugments.IsValueType(genericTypeDef))
{
// Reference types are treated like pointers. No calling convention conversion needed. Just consume the rest of the signature.
for (uint i = 0; i < data; i++)
TypeSignatureHasVarsNeedingCallingConventionConverter(ref parser, context, HasVarsInvestigationLevel.Ignore);
return false;
}
else
{
bool result = false;
for (uint i = 0; i < data; i++)
result = TypeSignatureHasVarsNeedingCallingConventionConverter(ref parser, context, HasVarsInvestigationLevel.NotParameter) || result;
if ((result == true) && (investigationLevel == HasVarsInvestigationLevel.Parameter))
{
if (!TryComputeHasInstantiationDeterminedSize(genericTypeDef, context, out result))
Environment.FailFast("Unable to setup calling convention converter correctly");
return result;
}
return result;
}
}
case TypeSignatureKind.Modifier:
{
// Arrays, pointers and byref types signatures are treated as pointers, not requiring calling convention conversion.
// Just consume the parameter type from the stream and return false;
TypeSignatureHasVarsNeedingCallingConventionConverter(ref parser, context, HasVarsInvestigationLevel.Ignore);
return false;
}
case TypeSignatureKind.MultiDimArray:
{
// No need for a calling convention converter for this case. Just consume the signature from the stream.
TypeSignatureHasVarsNeedingCallingConventionConverter(ref parser, context, HasVarsInvestigationLevel.Ignore);
uint boundCount = parser.GetUnsigned();
for (uint i = 0; i < boundCount; i++)
parser.GetUnsigned();
uint lowerBoundCount = parser.GetUnsigned();
for (uint i = 0; i < lowerBoundCount; i++)
parser.GetUnsigned();
}
return false;
case TypeSignatureKind.FunctionPointer:
{
// No need for a calling convention converter for this case. Just consume the signature from the stream.
uint argCount = parser.GetUnsigned();
for (uint i = 0; i < argCount; i++)
TypeSignatureHasVarsNeedingCallingConventionConverter(ref parser, context, HasVarsInvestigationLevel.Ignore);
}
return false;
default:
parser.ThrowBadImageFormatException();
return true;
}
}
private bool MethodSignatureHasVarsNeedingCallingConventionConverter_NativeLayout(TypeSystemContext context, IntPtr methodSig)
{
IntPtr moduleHandle = RuntimeAugments.GetModuleFromPointer(methodSig);
NativeReader reader = GetNativeLayoutInfoReader(moduleHandle);
NativeParser parser = new NativeParser(reader, reader.AddressToOffset(methodSig));
MethodCallingConvention callingConvention = (MethodCallingConvention)parser.GetUnsigned();
uint numGenArgs = callingConvention.HasFlag(MethodCallingConvention.Generic) ? parser.GetUnsigned() : 0;
uint parameterCount = parser.GetUnsigned();
// Check the return type of the method
if (TypeSignatureHasVarsNeedingCallingConventionConverter(ref parser, context, HasVarsInvestigationLevel.Parameter))
return true;
// Check the parameters of the method
for (uint i = 0; i < parameterCount; i++)
{
if (TypeSignatureHasVarsNeedingCallingConventionConverter(ref parser, context, HasVarsInvestigationLevel.Parameter))
return true;
}
return false;
}
public NativeHashtable(NativeParser parser)
{
uint header = parser.GetUInt8();
_reader = parser.Reader;
_baseOffset = parser.Offset;
int numberOfBucketsShift = (int)(header >> 2);
if (numberOfBucketsShift > 31)
_reader.ThrowBadImageFormatException();
_bucketMask = (uint)((1 << numberOfBucketsShift) - 1);
byte entryIndexSize = (byte)(header & 3);
if (entryIndexSize > 2)
_reader.ThrowBadImageFormatException();
_entryIndexSize = entryIndexSize;
}
internal bool GetCallingConverterDataFromMethodSignature_NativeLayout(TypeSystemContext context, IntPtr methodSig, NativeLayoutInfoLoadContext nativeLayoutContext, out bool hasThis, out TypeDesc[] parameters, out bool[] parametersWithGenericDependentLayout)
{
hasThis = false;
parameters = null;
IntPtr moduleHandle = RuntimeAugments.GetModuleFromPointer(methodSig);
NativeReader reader = GetNativeLayoutInfoReader(moduleHandle);
NativeParser parser = new NativeParser(reader, reader.AddressToOffset(methodSig));
MethodCallingConvention callingConvention = (MethodCallingConvention)parser.GetUnsigned();
hasThis = !callingConvention.HasFlag(MethodCallingConvention.Static);
uint numGenArgs = callingConvention.HasFlag(MethodCallingConvention.Generic) ? parser.GetUnsigned() : 0;
uint parameterCount = parser.GetUnsigned();
parameters = new TypeDesc[parameterCount + 1];
parametersWithGenericDependentLayout = new bool[parameterCount + 1];
// One extra parameter to account for the return type
for (uint i = 0; i <= parameterCount; i++)
{
// NativeParser is a struct, so it can be copied.
NativeParser parserCopy = parser;
// Parse the signature twice. The first time to find out the exact type of the signature
// The second time to identify if the parameter loaded via the signature should be forced to be
// passed byref as part of the universal generic calling convention.
parameters[i] = GetConstructedTypeFromParserAndNativeLayoutContext(ref parser, nativeLayoutContext);
parametersWithGenericDependentLayout[i] = TypeSignatureHasVarsNeedingCallingConventionConverter(ref parserCopy, context, HasVarsInvestigationLevel.Parameter);
if (parameters[i] == null)
return false;
}
return true;
}
private uint GetGenericArgCountFromSig(NativeParser parser)
{
MethodCallingConvention callingConvention = (MethodCallingConvention)parser.GetUnsigned();
if ((callingConvention & MethodCallingConvention.Generic) == MethodCallingConvention.Generic)
{
return parser.GetUnsigned();
}
else
{
return 0;
}
}
private bool CompareTypeSigs(ref NativeParser parser1, ref NativeParser parser2)
{
// startOffset lets us backtrack to the TypeSignatureKind for external types since the TypeLoader
// expects to read it in.
uint data1;
uint startOffset1 = parser1.Offset;
var typeSignatureKind1 = parser1.GetTypeSignatureKind(out data1);
// If the parser is at a lookback type, get a new parser for it and recurse.
// Since we haven't read the element type of parser2 yet, we just pass it in unchanged
if (typeSignatureKind1 == TypeSignatureKind.Lookback)
{
NativeParser lookbackParser1 = parser1.GetLookbackParser(data1);
return CompareTypeSigs(ref lookbackParser1, ref parser2);
}
uint data2;
uint startOffset2 = parser2.Offset;
var typeSignatureKind2 = parser2.GetTypeSignatureKind(out data2);
// If parser2 is a lookback type, we need to rewind parser1 to its startOffset1
// before recursing.
if (typeSignatureKind2 == TypeSignatureKind.Lookback)
{
NativeParser lookbackParser2 = parser2.GetLookbackParser(data2);
parser1 = new NativeParser(parser1.Reader, startOffset1);
return CompareTypeSigs(ref parser1, ref lookbackParser2);
}
if (typeSignatureKind1 != typeSignatureKind2)
return false;
switch (typeSignatureKind1)
{
case TypeSignatureKind.Lookback:
{
// Recursion above better have removed all lookbacks
Debug.Assert(false, "Unexpected lookback type");
return false;
}
case TypeSignatureKind.Modifier:
{
// Ensure the modifier kind (vector, pointer, byref) is the same
if (data1 != data2)
return false;
return CompareTypeSigs(ref parser1, ref parser2);
}
case TypeSignatureKind.Variable:
{
// variable index is in data
if (data1 != data2)
return false;
break;
}
case TypeSignatureKind.MultiDimArray:
{
// rank is in data
if (data1 != data2)
return false;
if (!CompareTypeSigs(ref parser1, ref parser2))
return false;
uint boundCount1 = parser1.GetUnsigned();
uint boundCount2 = parser2.GetUnsigned();
if (boundCount1 != boundCount2)
return false;
for (uint i = 0; i < boundCount1; i++)
{
if (parser1.GetUnsigned() != parser2.GetUnsigned())
return false;
}
uint lowerBoundCount1 = parser1.GetUnsigned();
uint lowerBoundCount2 = parser2.GetUnsigned();
if (lowerBoundCount1 != lowerBoundCount2)
return false;
for (uint i = 0; i < lowerBoundCount1; i++)
{
if (parser1.GetUnsigned() != parser2.GetUnsigned())
return false;
}
break;
}
case TypeSignatureKind.FunctionPointer:
{
// callingConvention is in data
if (data1 != data2)
return false;
uint argCount1 = parser1.GetUnsigned();
uint argCount2 = parser2.GetUnsigned();
if (argCount1 != argCount2)
return false;
for (uint i = 0; i < argCount1; i++)
{
if (!CompareTypeSigs(ref parser1, ref parser2))
return false;
}
break;
}
case TypeSignatureKind.Instantiation:
{
// Type parameter count is in data
if (data1 != data2)
return false;
if (!CompareTypeSigs(ref parser1, ref parser2))
return false;
for (uint i = 0; i < data1; i++)
{
if (!CompareTypeSigs(ref parser1, ref parser2))
return false;
}
break;
}
case TypeSignatureKind.External:
{
RuntimeTypeHandle typeHandle1 = GetExternalTypeHandle(ref parser1, data1);
RuntimeTypeHandle typeHandle2 = GetExternalTypeHandle(ref parser2, data2);
if (!typeHandle1.Equals(typeHandle2))
return false;
break;
}
default:
return false;
}
return true;
}
public unsafe bool TryGetNamedTypeForMetadata(MetadataReader metadataReader, TypeDefinitionHandle typeDefHandle, out RuntimeTypeHandle runtimeTypeHandle)
{
int hashCode = typeDefHandle.ComputeHashCode(metadataReader);
IntPtr moduleHandle = ModuleList.Instance.GetModuleForMetadataReader(metadataReader);
NativeReader typeMapReader;
if (TryGetNativeReaderForBlob(moduleHandle, ReflectionMapBlob.TypeMap, out typeMapReader))
{
NativeParser typeMapParser = new NativeParser(typeMapReader, 0);
NativeHashtable typeHashtable = new NativeHashtable(typeMapParser);
ExternalReferencesTable externalReferences = default(ExternalReferencesTable);
externalReferences.InitializeCommonFixupsTable(moduleHandle);
var lookup = typeHashtable.Lookup(hashCode);
NativeParser entryParser;
while (!(entryParser = lookup.GetNext()).IsNull)
{
var foundTypeIndex = entryParser.GetUnsigned();
if (entryParser.GetUnsigned().AsHandle().Equals(typeDefHandle))
{
runtimeTypeHandle = externalReferences.GetRuntimeTypeHandleFromIndex(foundTypeIndex);
return true;
}
}
}
runtimeTypeHandle = default(RuntimeTypeHandle);
return false;
}
public bool TryGetMethodNameAndSignatureFromNativeLayoutSignature(ref IntPtr signature, out MethodNameAndSignature nameAndSignature)
{
nameAndSignature = null;
NativeReader reader = GetNativeLayoutInfoReader(RuntimeAugments.GetModuleFromPointer(signature));
uint offset = reader.AddressToOffset(signature);
NativeParser parser = new NativeParser(reader, offset);
if (parser.IsNull)
return false;
IntPtr methodSigPtr;
IntPtr methodNameSigPtr;
nameAndSignature = GetMethodNameAndSignature(ref parser, out methodNameSigPtr, out methodSigPtr);
signature = (IntPtr)((long)signature + (parser.Offset - offset));
return true;
}
private bool ResolveInterfaceGenericVirtualMethodSlot_Static(RuntimeTypeHandle targetTypeHandle, ref RuntimeTypeHandle declaringType, ref MethodNameAndSignature methodNameAndSignature)
{
// Get the open type definition of the containing type of the generic virtual method being resolved
RuntimeTypeHandle openCallingTypeHandle = GetTypeDefinition(declaringType);
// Get the open type definition of the current type of the object instance on which the GVM is being resolved
RuntimeTypeHandle openTargetTypeHandle;
RuntimeTypeHandle[] targetTypeInstantiation;
openTargetTypeHandle = GetOpenTypeDefinition(targetTypeHandle, out targetTypeInstantiation);
#if REFLECTION_EXECUTION_TRACE
ReflectionExecutionLogger.WriteLine("INTERFACE GVM call = " + GetTypeNameDebug(declaringType) + "." + methodNameAndSignature.Name);
#endif
foreach (IntPtr moduleHandle in ModuleList.Enumerate(RuntimeAugments.GetModuleFromTypeHandle(openTargetTypeHandle)))
{
NativeReader gvmTableReader;
if (!TryGetNativeReaderForBlob(moduleHandle, ReflectionMapBlob.InterfaceGenericVirtualMethodTable, out gvmTableReader))
continue;
NativeReader nativeLayoutReader;
if (!TryGetNativeReaderForBlob(moduleHandle, ReflectionMapBlob.NativeLayoutInfo, out nativeLayoutReader))
continue;
NativeParser gvmTableParser = new NativeParser(gvmTableReader, 0);
NativeHashtable gvmHashtable = new NativeHashtable(gvmTableParser);
ExternalReferencesTable extRefs = default(ExternalReferencesTable);
extRefs.InitializeCommonFixupsTable(moduleHandle);
var lookup = gvmHashtable.Lookup(openCallingTypeHandle.GetHashCode());
NativeParser entryParser;
while (!(entryParser = lookup.GetNext()).IsNull)
{
RuntimeTypeHandle interfaceTypeHandle = extRefs.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
if (!openCallingTypeHandle.Equals(interfaceTypeHandle))
continue;
uint nameAndSigToken = extRefs.GetRvaFromIndex(entryParser.GetUnsigned());
MethodNameAndSignature interfaceMethodNameAndSignature = GetMethodNameAndSignatureFromNativeReader(nativeLayoutReader, nameAndSigToken);
if (!interfaceMethodNameAndSignature.Equals(methodNameAndSignature))
continue;
// For each of the possible GVM slot targets for the current interface call, we will do the following:
//
// Step 1: Scan the types that currently provide implementations for the current GVM slot target, and look
// for ones that match the target object's type.
//
// Step 2: For each type that we find in step #1, get a list of all the interfaces that the current GVM target
// provides an implementation for
//
// Step 3: For each interface in the list in step #2, parse the signature of that interface, do the generic argument
// substitution (in case of a generic interface), and check if this interface signature is assignable from the
// calling interface signature (from the name and sig input). if there is an exact match based on
// interface type, then we've found the right slot. Otherwise, re-scan the entry again and see if some interface
// type is compatible with the initial slots interface by means of variance.
// This is done by calling the TypeLoaderEnvironment helper function.
//
// Example:
// public interface IFoo<out T, out U>
// {
// string M1<V>();
// }
// public class Foo1<T, U> : IFoo<T, U>, IFoo<Kvp<T, string>, U>
// {
// string IFoo<T, U>.M1<V>() { ... }
// public virtual string M1<V>() { ... }
// }
// public class Foo2<T, U> : Foo1<object, U>, IFoo<U, T>
// {
// string IFoo<U, T>.M1<V>() { ... }
// }
//
// GVM Table layout for IFoo<T, U>.M1<V>:
// {
// InterfaceTypeHandle = IFoo<T, U>
// InterfaceMethodNameAndSignature = { "M1", SigOf(string M1) }
// GVMTargetSlots[] =
// {
// {
// TargetMethodNameAndSignature = { "M1", SigOf(M1) }
// TargetTypeHandle = Foo1<T, U>
// ImplementingTypes[] = {
// ImplementingTypeHandle = Foo1<T, U>
// ImplementedInterfacesSignatures[] = { SigOf(IFoo<!0, !1>) }
// }
// },
//
// {
// TargetMethodNameAndSignature = { "M1", SigOf(M1) }
// TargetTypeHandle = Foo1<T, U>
// ImplementingTypes[] = {
// ImplementingTypeHandle = Foo1<T, U>
// ImplementedInterfacesSignatures[] = { SigOf(IFoo<Kvp<!0, string>, !1>) }
// }
// },
//
// {
// TargetMethodNameAndSignature = { "M1", SigOf(M1) }
// TargetTypeHandle = Foo2<T, U>
// ImplementingTypes = {
// ImplementingTypeHandle = Foo2<T, U>
// ImplementedInterfacesSignatures[] = { SigOf(IFoo<!1, !0>) }
// }
// },
// }
// }
//
uint currentOffset = entryParser.Offset;
// Non-variant dispatch of a variant generic interface generic virtual method.
if (FindMatchingInterfaceSlot(moduleHandle, nativeLayoutReader, ref entryParser, ref extRefs, ref declaringType, ref methodNameAndSignature, openTargetTypeHandle, targetTypeInstantiation, false))
{
return true;
}
entryParser.Offset = currentOffset;
// Variant dispatch of a variant generic interface generic virtual method.
if (FindMatchingInterfaceSlot(moduleHandle, nativeLayoutReader, ref entryParser, ref extRefs, ref declaringType, ref methodNameAndSignature, openTargetTypeHandle, targetTypeInstantiation, true))
{
return true;
}
}
}
return false;
}
private unsafe bool ResolveGenericVirtualMethodTarget_Static(RuntimeTypeHandle targetTypeHandle, RuntimeTypeHandle declaringType, RuntimeTypeHandle[] genericArguments, MethodNameAndSignature callingMethodNameAndSignature, out IntPtr methodPointer, out IntPtr dictionaryPointer)
{
methodPointer = dictionaryPointer = IntPtr.Zero;
// Get the open type definition of the containing type of the generic virtual method being resolved
RuntimeTypeHandle openCallingTypeHandle = GetTypeDefinition(declaringType);
// Get the open type definition of the current type of the object instance on which the GVM is being resolved
RuntimeTypeHandle openTargetTypeHandle = GetTypeDefinition(targetTypeHandle);
int hashCode = openCallingTypeHandle.GetHashCode();
hashCode = ((hashCode << 13) ^ hashCode) ^ openTargetTypeHandle.GetHashCode();
#if REFLECTION_EXECUTION_TRACE
ReflectionExecutionLogger.WriteLine("GVM Target Resolution = " + GetTypeNameDebug(targetTypeHandle) + "." + callingMethodNameAndSignature.Name);
#endif
foreach (IntPtr moduleHandle in ModuleList.Enumerate(RuntimeAugments.GetModuleFromTypeHandle(openTargetTypeHandle)))
{
NativeReader gvmTableReader;
if (!TryGetNativeReaderForBlob(moduleHandle, ReflectionMapBlob.GenericVirtualMethodTable, out gvmTableReader))
continue;
NativeReader nativeLayoutReader;
if (!TryGetNativeReaderForBlob(moduleHandle, ReflectionMapBlob.NativeLayoutInfo, out nativeLayoutReader))
continue;
NativeParser gvmTableParser = new NativeParser(gvmTableReader, 0);
NativeHashtable gvmHashtable = new NativeHashtable(gvmTableParser);
ExternalReferencesTable extRefs = default(ExternalReferencesTable);
extRefs.InitializeCommonFixupsTable(moduleHandle);
var lookup = gvmHashtable.Lookup(hashCode);
NativeParser entryParser;
while (!(entryParser = lookup.GetNext()).IsNull)
{
RuntimeTypeHandle parsedCallingTypeHandle = extRefs.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
if (!parsedCallingTypeHandle.Equals(openCallingTypeHandle))
continue;
RuntimeTypeHandle parsedTargetTypeHandle = extRefs.GetRuntimeTypeHandleFromIndex(entryParser.GetUnsigned());
if (!parsedTargetTypeHandle.Equals(openTargetTypeHandle))
continue;
uint parsedCallingNameAndSigToken = extRefs.GetRvaFromIndex(entryParser.GetUnsigned());
MethodNameAndSignature parsedCallingNameAndSignature = GetMethodNameAndSignatureFromNativeReader(nativeLayoutReader, parsedCallingNameAndSigToken);
if (!parsedCallingNameAndSignature.Equals(callingMethodNameAndSignature))
continue;
uint parsedTargetMethodNameAndSigToken = extRefs.GetRvaFromIndex(entryParser.GetUnsigned());
MethodNameAndSignature targetMethodNameAndSignature = GetMethodNameAndSignatureFromNativeReader(nativeLayoutReader, parsedTargetMethodNameAndSigToken);
Debug.Assert(targetMethodNameAndSignature != null);
return TryGetGenericVirtualMethodPointer(targetTypeHandle, targetMethodNameAndSignature, genericArguments, out methodPointer, out dictionaryPointer);
}
}
return false;
}
public NativeParser GetNext()
{
for (;;)
{
while (_parser.Offset < _endOffset)
{
byte lowHashcode = _parser.GetUInt8();
return _parser.GetParserFromRelativeOffset();
}
if (_currentBucket >= _table._bucketMask)
return new NativeParser();
_currentBucket++;
_parser = _table.GetParserForBucket(_currentBucket, out _endOffset);
}
}
internal AllEntriesEnumerator(NativeHashtable table)
{
_table = table;
_currentBucket = 0;
_parser = _table.GetParserForBucket(_currentBucket, out _endOffset);
}
internal Enumerator(NativeParser parser, uint endOffset, byte lowHashcode)
{
_parser = parser;
_endOffset = endOffset;
_lowHashcode = lowHashcode;
}
private bool TryGetTypeFromSimpleTypeSignature(ref NativeParser parser, out RuntimeTypeHandle typeHandle)
{
uint data;
TypeSignatureKind kind = parser.GetTypeSignatureKind(out data);
if (kind == TypeSignatureKind.Lookback)
{
var lookbackParser = parser.GetLookbackParser(data);
return TryGetTypeFromSimpleTypeSignature(ref lookbackParser, out typeHandle);
}
else if (kind == TypeSignatureKind.External)
{
typeHandle = GetExternalTypeHandle(ref parser, data);
return true;
}
// Not a simple type signature... requires more work to skip
typeHandle = default(RuntimeTypeHandle);
return false;
}
internal unsafe static GenericDictionaryCell[] BuildDictionary(TypeBuilder typeBuilder, NativeLayoutInfoLoadContext nativeLayoutInfoLoadContext, NativeParser parser)
{
uint parserStartOffset = parser.Offset;
uint count = parser.GetSequenceCount();
Debug.Assert(count > 0);
TypeLoaderLogger.WriteLine("Parsing dictionary layout @ " + parserStartOffset.LowLevelToString() + " (" + count.LowLevelToString() + " entries)");
GenericDictionaryCell[] dictionary = new GenericDictionaryCell[count];
for (uint i = 0; i < count; i++)
{
GenericDictionaryCell cell = ParseAndCreateCell(nativeLayoutInfoLoadContext, ref parser);
cell.Prepare(typeBuilder);
dictionary[i] = cell;
}
return dictionary;
}
private RuntimeTypeHandle GetExternalTypeHandle(ref NativeParser parser, uint typeIndex)
{
IntPtr moduleHandle = RuntimeAugments.GetModuleFromPointer(parser.Reader.OffsetToAddress(parser.Offset));
Debug.Assert(moduleHandle != IntPtr.Zero);
RuntimeTypeHandle result;
TypeSystemContext context = TypeSystemContextFactory.Create();
{
NativeLayoutInfoLoadContext nativeLayoutContext = new NativeLayoutInfoLoadContext();
nativeLayoutContext._moduleHandle = moduleHandle;
nativeLayoutContext._typeSystemContext = context;
TypeDesc type = nativeLayoutContext.GetExternalType(typeIndex);
result = type.RuntimeTypeHandle;
}
TypeSystemContextFactory.Recycle(context);
Debug.Assert(!result.IsNull());
return result;
}
internal AllEntriesEnumerator(NativeHashtable table)
{
_table = table;
_currentBucket = 0;
_parser = _table.GetParserForBucket(_currentBucket, out _endOffset);
}
private bool CompareMethodSigs(NativeParser parser1, NativeParser parser2)
{
MethodCallingConvention callingConvention1 = (MethodCallingConvention)parser1.GetUnsigned();
MethodCallingConvention callingConvention2 = (MethodCallingConvention)parser2.GetUnsigned();
if (callingConvention1 != callingConvention2)
return false;
if ((callingConvention1 & MethodCallingConvention.Generic) == MethodCallingConvention.Generic)
{
if (parser1.GetUnsigned() != parser2.GetUnsigned())
return false;
}
uint parameterCount1 = parser1.GetUnsigned();
uint parameterCount2 = parser2.GetUnsigned();
if (parameterCount1 != parameterCount2)
return false;
// Compare one extra parameter to account for the return type
for (uint i = 0; i <= parameterCount1; i++)
{
if (!CompareTypeSigs(ref parser1, ref parser2))
return false;
}
return true;
}
internal bool IsStaticMethodSignature(RuntimeMethodSignature methodSig)
{
if (methodSig.IsNativeLayoutSignature)
{
IntPtr moduleHandle = RuntimeAugments.GetModuleFromPointer(methodSig.NativeLayoutSignature);
NativeReader reader = GetNativeLayoutInfoReader(moduleHandle);
NativeParser parser = new NativeParser(reader, reader.AddressToOffset(methodSig.NativeLayoutSignature));
MethodCallingConvention callingConvention = (MethodCallingConvention)parser.GetUnsigned();
return callingConvention.HasFlag(MethodCallingConvention.Static);
}
else
{
var metadataReader = ModuleList.Instance.GetMetadataReaderForModule(methodSig.ModuleHandle);
var methodHandle = methodSig.Token.AsHandle().ToMethodHandle(metadataReader);
var method = methodHandle.GetMethod(metadataReader);
return (method.Flags & MethodAttributes.Static) != 0;
}
}
public bool TryGetMethodNameAndSignaturePointersFromNativeLayoutSignature(IntPtr module, uint methodNameAndSigToken, out IntPtr methodNameSigPtr, out IntPtr methodSigPtr)
{
methodNameSigPtr = default(IntPtr);
methodSigPtr = default(IntPtr);
NativeReader reader = GetNativeLayoutInfoReader(module);
uint offset = methodNameAndSigToken;
NativeParser parser = new NativeParser(reader, offset);
if (parser.IsNull)
return false;
methodNameSigPtr = parser.Reader.OffsetToAddress(parser.Offset);
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();
methodSigPtr = sigParser.Reader.OffsetToAddress(sigParser.Offset);
return true;
}
internal override void ParseBaseType(NativeLayoutInfoLoadContext nativeLayoutInfoLoadContext, NativeParser baseTypeParser)
{
if (!baseTypeParser.IsNull)
{
// If the base type is available from the native layout info use it if the type we have is a NoMetadataType
SetBaseType((DefType)nativeLayoutInfoLoadContext.GetType(ref baseTypeParser));
}
else
{
// Set the base type for no metadata types, if we reach this point, and there isn't a parser, then we simply use the value from the template
SetBaseType(ComputeTemplate().BaseType);
}
}
internal static GenericDictionaryCell ParseAndCreateCell(NativeLayoutInfoLoadContext nativeLayoutInfoLoadContext, ref NativeParser parser)
{
GenericDictionaryCell cell;
var kind = parser.GetFixupSignatureKind();
switch (kind)
{
case FixupSignatureKind.TypeHandle:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
TypeLoaderLogger.WriteLine("TypeHandle: " + type.ToString());
cell = new TypeHandleCell() { Type = type };
}
break;
case FixupSignatureKind.InterfaceCall:
{
var interfaceType = nativeLayoutInfoLoadContext.GetType(ref parser);
var slot = parser.GetUnsigned();
TypeLoaderLogger.WriteLine("InterfaceCall: " + interfaceType.ToString() + ", slot #" + slot.LowLevelToString());
cell = new InterfaceCallCell() { InterfaceType = interfaceType, Slot = (int)slot };
}
break;
case FixupSignatureKind.MethodDictionary:
{
var genericMethod = nativeLayoutInfoLoadContext.GetMethod(ref parser);
Debug.Assert(genericMethod.Instantiation.Length > 0);
TypeLoaderLogger.WriteLine("MethodDictionary: " + genericMethod.ToString());
cell = new MethodDictionaryCell { GenericMethod = (InstantiatedMethod)genericMethod };
}
break;
case FixupSignatureKind.StaticData:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
StaticDataKind staticDataKind = (StaticDataKind)parser.GetUnsigned();
TypeLoaderLogger.WriteLine("StaticData (" + (staticDataKind == StaticDataKind.Gc ? "Gc" : "NonGc") + ": " + type.ToString());
cell = new StaticDataCell() { DataKind = staticDataKind, Type = type };
}
break;
case FixupSignatureKind.UnwrapNullableType:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
TypeLoaderLogger.WriteLine("UnwrapNullableType of: " + type.ToString());
cell = new UnwrapNullableTypeCell() { Type = (DefType)type };
}
break;
case FixupSignatureKind.FieldLdToken:
{
NativeParser ldtokenSigParser = parser.GetParserFromRelativeOffset();
var type = nativeLayoutInfoLoadContext.GetType(ref ldtokenSigParser);
IntPtr fieldNameSig = ldtokenSigParser.Reader.OffsetToAddress(ldtokenSigParser.Offset);
TypeLoaderLogger.WriteLine("LdToken on: " + type.ToString() + "." + ldtokenSigParser.GetString());
cell = new FieldLdTokenCell() { FieldName = fieldNameSig, ContainingType = type };
}
break;
case FixupSignatureKind.MethodLdToken:
{
NativeParser ldtokenSigParser = parser.GetParserFromRelativeOffset();
IntPtr methodNameSigPtr;
IntPtr methodSigPtr;
var method = nativeLayoutInfoLoadContext.GetMethod(ref ldtokenSigParser, out methodNameSigPtr, out methodSigPtr);
TypeLoaderLogger.WriteLine("LdToken on: " + method.OwningType.ToString() + "::" + method.NameAndSignature.Name);
cell = new MethodLdTokenCell
{
Method = method,
MethodName = methodNameSigPtr,
MethodSignature = RuntimeMethodSignature.CreateFromNativeLayoutSignature(methodSigPtr)
};
}
break;
case FixupSignatureKind.TypeSize:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
TypeLoaderLogger.WriteLine("TypeSize: " + type.ToString());
cell = new TypeSizeCell() { Type = type };
}
break;
case FixupSignatureKind.FieldOffset:
{
var type = (DefType)nativeLayoutInfoLoadContext.GetType(ref parser);
uint ordinal = parser.GetUnsigned();
TypeLoaderLogger.WriteLine("FieldOffset on: " + type.ToString());
cell = new FieldOffsetCell() { Ordinal = ordinal, ContainingType = type };
}
break;
case FixupSignatureKind.VTableOffset:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
var vtableSlot = parser.GetUnsigned();
TypeLoaderLogger.WriteLine("VTableOffset on: " + type.ToString() + ", slot: " + vtableSlot.LowLevelToString());
cell = new VTableOffsetCell() { ContainingType = type, VTableSlot = vtableSlot };
}
break;
case FixupSignatureKind.AllocateObject:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
TypeLoaderLogger.WriteLine("AllocateObject on: " + type.ToString());
cell = new AllocateObjectCell { Type = type };
}
break;
case FixupSignatureKind.DefaultConstructor:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
TypeLoaderLogger.WriteLine("DefaultConstructor on: " + type.ToString());
cell = new DefaultConstructorCell { Type = type };
}
break;
case FixupSignatureKind.TlsIndex:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
TypeLoaderLogger.WriteLine("TlsIndex on: " + type.ToString());
cell = new TlsIndexCell { Type = type };
}
break;
case FixupSignatureKind.TlsOffset:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
TypeLoaderLogger.WriteLine("TlsOffset on: " + type.ToString());
cell = new TlsOffsetCell { Type = type };
}
break;
case FixupSignatureKind.Method:
{
IntPtr methodSigPtr;
IntPtr methodNameSigPtr;
var method = nativeLayoutInfoLoadContext.GetMethod(ref parser, out methodNameSigPtr, out methodSigPtr);
TypeLoaderLogger.WriteLine("Method: " + method.ToString());
cell = new MethodCell
{
Method = method,
MethodSignature = RuntimeMethodSignature.CreateFromNativeLayoutSignature(methodSigPtr)
};
}
break;
case FixupSignatureKind.NonGenericDirectConstrainedMethod:
{
var constraintType = nativeLayoutInfoLoadContext.GetType(ref parser);
var constrainedMethodType = nativeLayoutInfoLoadContext.GetType(ref parser);
var constrainedMethodSlot = parser.GetUnsigned();
TypeLoaderLogger.WriteLine("NonGenericDirectConstrainedMethod: " + constraintType.ToString() + " Method " + constrainedMethodType.ToString() + ", slot #" + constrainedMethodSlot.LowLevelToString());
cell = new NonGenericDirectConstrainedMethodCell()
{
ConstraintType = constraintType,
ConstrainedMethodType = constrainedMethodType,
ConstrainedMethodSlot = (int)constrainedMethodSlot
};
}
break;
case FixupSignatureKind.NonGenericConstrainedMethod:
{
var constraintType = nativeLayoutInfoLoadContext.GetType(ref parser);
var constrainedMethodType = nativeLayoutInfoLoadContext.GetType(ref parser);
var constrainedMethodSlot = parser.GetUnsigned();
TypeLoaderLogger.WriteLine("NonGenericConstrainedMethod: " + constraintType.ToString() + " Method " + constrainedMethodType.ToString() + ", slot #" + constrainedMethodSlot.LowLevelToString());
cell = new NonGenericConstrainedMethodCell()
{
ConstraintType = constraintType,
ConstrainedMethodType = constrainedMethodType,
ConstrainedMethodSlot = (int)constrainedMethodSlot
};
}
break;
case FixupSignatureKind.GenericConstrainedMethod:
{
var constraintType = nativeLayoutInfoLoadContext.GetType(ref parser);
NativeParser ldtokenSigParser = parser.GetParserFromRelativeOffset();
IntPtr methodNameSigPtr;
IntPtr methodSigPtr;
var method = nativeLayoutInfoLoadContext.GetMethod(ref ldtokenSigParser, out methodNameSigPtr, out methodSigPtr);
TypeLoaderLogger.WriteLine("GenericConstrainedMethod: " + constraintType.ToString() + " Method " + method.OwningType.ToString() + "::" + method.NameAndSignature.Name);
cell = new GenericConstrainedMethodCell()
{
ConstraintType = constraintType,
ConstrainedMethod = method,
MethodName = methodNameSigPtr,
MethodSignature = RuntimeMethodSignature.CreateFromNativeLayoutSignature(methodSigPtr)
};
}
break;
case FixupSignatureKind.IsInst:
case FixupSignatureKind.CastClass:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
TypeLoaderLogger.WriteLine("Casting on: " + type.ToString());
cell = new CastingCell { Type = type, Throwing = (kind == FixupSignatureKind.CastClass) };
}
break;
case FixupSignatureKind.AllocateArray:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
TypeLoaderLogger.WriteLine("AllocateArray on: " + type.ToString());
cell = new AllocateArrayCell { Type = type };
}
break;
case FixupSignatureKind.CheckArrayElementType:
{
var type = nativeLayoutInfoLoadContext.GetType(ref parser);
TypeLoaderLogger.WriteLine("CheckArrayElementType on: " + type.ToString());
cell = new CheckArrayElementTypeCell { Type = type };
}
break;
case FixupSignatureKind.CallingConventionConverter:
{
NativeFormat.CallingConventionConverterKind flags = (NativeFormat.CallingConventionConverterKind)parser.GetUnsigned();
NativeParser sigParser = parser.GetParserFromRelativeOffset();
IntPtr signature = sigParser.Reader.OffsetToAddress(sigParser.Offset);
#if TYPE_LOADER_TRACE
TypeLoaderLogger.WriteLine("CallingConventionConverter on: ");
TypeLoaderLogger.WriteLine(" -> Flags: " + ((int)flags).LowLevelToString());
TypeLoaderLogger.WriteLine(" -> Signature: " + signature.LowLevelToString());
for (int i = 0; !nativeLayoutInfoLoadContext._typeArgumentHandles.IsNull && i < nativeLayoutInfoLoadContext._typeArgumentHandles.Length; i++)
TypeLoaderLogger.WriteLine(" -> TypeArg[" + i.LowLevelToString() + "]: " + nativeLayoutInfoLoadContext._typeArgumentHandles[i]);
for (int i = 0; !nativeLayoutInfoLoadContext._methodArgumentHandles.IsNull && i < nativeLayoutInfoLoadContext._methodArgumentHandles.Length; i++)
TypeLoaderLogger.WriteLine(" -> MethodArg[" + i.LowLevelToString() + "]: " + nativeLayoutInfoLoadContext._methodArgumentHandles[i]);
#endif
cell = new CallingConventionConverterCell
{
Flags = flags,
Signature = RuntimeMethodSignature.CreateFromNativeLayoutSignature(signature),
MethodArgs = nativeLayoutInfoLoadContext._methodArgumentHandles,
TypeArgs = nativeLayoutInfoLoadContext._typeArgumentHandles
};
}
break;
case FixupSignatureKind.NotYetSupported:
TypeLoaderLogger.WriteLine("Valid dictionary entry, but not yet supported by the TypeLoader!");
throw new TypeBuilder.MissingTemplateException();
default:
parser.ThrowBadImageFormatException();
cell = null;
break;
}
return cell;
}
public bool TryGetMethodNameAndSignatureFromNativeLayoutOffset(IntPtr moduleHandle, uint nativeLayoutOffset, out MethodNameAndSignature nameAndSignature)
{
nameAndSignature = null;
NativeReader reader = GetNativeLayoutInfoReader(moduleHandle);
NativeParser parser = new NativeParser(reader, nativeLayoutOffset);
if (parser.IsNull)
return false;
IntPtr methodSigPtr;
IntPtr methodNameSigPtr;
nameAndSignature = GetMethodNameAndSignature(ref parser, out methodNameSigPtr, out methodSigPtr);
return true;
}
/// <summary>
/// Build an array of GenericDictionaryCell from a NativeParser stream that has the appropriate metadata
/// Return null if there are no cells to describe
/// </summary>
internal unsafe static GenericDictionaryCell[] BuildDictionaryFromMetadataTokensAndContext(TypeBuilder typeBuilder, NativeParser parser, NativeFormatMetadataUnit nativeMetadataUnit, FixupCellMetadataResolver resolver)
{
uint parserStartOffset = parser.Offset;
uint count = parser.GetSequenceCount();
// An empty dictionary isn't interesting
if (count == 0)
return null;
Debug.Assert(count > 0);
TypeLoaderLogger.WriteLine("Parsing dictionary layout @ " + parserStartOffset.LowLevelToString() + " (" + count.LowLevelToString() + " entries)");
GenericDictionaryCell[] dictionary = new GenericDictionaryCell[count];
for (uint i = 0; i < count; i++)
{
MetadataFixupKind fixupKind = (MetadataFixupKind)parser.GetUInt8();
Internal.Metadata.NativeFormat.Handle token = parser.GetUnsigned().AsHandle();
Internal.Metadata.NativeFormat.Handle token2 = new Internal.Metadata.NativeFormat.Handle();
switch (fixupKind)
{
case MetadataFixupKind.GenericConstrainedMethod:
case MetadataFixupKind.NonGenericConstrainedMethod:
case MetadataFixupKind.NonGenericDirectConstrainedMethod:
token2 = parser.GetUnsigned().AsHandle();
break;
}
GenericDictionaryCell cell = CreateCellFromFixupKindAndToken(fixupKind, resolver, token, token2);
cell.Prepare(typeBuilder);
dictionary[i] = cell;
}
return dictionary;
}
internal Enumerator(NativeParser parser, uint endOffset, byte lowHashcode)
{
_parser = parser;
_endOffset = endOffset;
_lowHashcode = lowHashcode;
}