/// <summary>
/// Returns pregenerated interop code for given PInvoke method if one exist
/// </summary>
public static MethodDesc TryGetPregeneratedPInvoke(MethodDesc method)
{
Debug.Assert(method.IsPInvoke);
var metadataType = (MetadataType)method.OwningType;
var module = metadataType.Module;
var assemblyName = ((IAssemblyDesc)module).GetName();
var interopAssemblyName = new AssemblyName();
interopAssemblyName.Name = assemblyName.Name + AssemblyNameSuffix;
interopAssemblyName.Version = assemblyName.Version;
interopAssemblyName.SetPublicKeyToken(interopAssemblyName.GetPublicKeyToken());
interopAssemblyName.CultureName = assemblyName.CultureName;
interopAssemblyName.ContentType = assemblyName.ContentType;
var interopModule = module.Context.ResolveAssembly(interopAssemblyName, false);
if (interopModule == null)
return null;
var pregeneratedMethod = GetMatchingMethod(interopModule, method);
if (pregeneratedMethod == null)
{
// TODO: Better error message
throw new MissingMemberException("Missing method in " + interopAssemblyName.Name + ":" + method.ToString());
}
return pregeneratedMethod;
}
public override string ToString()
{
var sb = new StringBuilder(_methodDef.ToString());
sb.Append('<');
sb.Append(_instantiation.ToString());
sb.Append('>');
return(sb.ToString());
}
public override string ToString()
{
var sb = new StringBuilder(_methodDef.ToString());
sb.Append('<');
for (int i = 0; i < _instantiation.Length; i++)
{
sb.Append(_instantiation[i].ToString());
}
sb.Append('>');
return(sb.ToString());
}
public static MethodIL EmitIL(MethodDesc method)
{
if (!RequiresMarshalling(method))
return null;
try
{
return new PInvokeMarshallingILEmitter(method).EmitIL();
}
catch (NotSupportedException)
{
ILEmitter emitter = new ILEmitter();
string message = "Method '" + method.ToString() +
"' requires non-trivial marshalling that is not yet supported by this compiler.";
TypeSystemContext context = method.Context;
MethodSignature ctorSignature = new MethodSignature(0, 0, context.GetWellKnownType(WellKnownType.Void),
new TypeDesc[] { context.GetWellKnownType(WellKnownType.String) });
MethodDesc exceptionCtor = method.Context.GetWellKnownType(WellKnownType.Exception).GetKnownMethod(".ctor", ctorSignature);
ILCodeStream codeStream = emitter.NewCodeStream();
codeStream.Emit(ILOpcode.ldstr, emitter.NewToken(message));
codeStream.Emit(ILOpcode.newobj, emitter.NewToken(exceptionCtor));
codeStream.Emit(ILOpcode.throw_);
codeStream.Emit(ILOpcode.ret);
return emitter.Link();
}
}
public void CompileMethod(MethodDesc method)
{
_compilation.Log.WriteLine("Compiling " + method.ToString());
SpecialMethodKind kind = method.DetectSpecialMethodKind();
if (kind != SpecialMethodKind.Unknown)
{
string specialMethodCode = CompileSpecialMethod(method, kind);
_compilation.GetRegisteredMethod(method).MethodCode = specialMethodCode;
return;
}
var methodIL = _compilation.GetMethodIL(method);
if (methodIL == null)
return;
string methodCode;
try
{
var ilImporter = new ILImporter(_compilation, this, method, methodIL);
CompilerTypeSystemContext typeSystemContext = _compilation.TypeSystemContext;
if (!_compilation.Options.NoLineNumbers)
{
IEnumerable<ILSequencePoint> sequencePoints = typeSystemContext.GetSequencePointsForMethod(method);
if (sequencePoints != null)
ilImporter.SetSequencePoints(sequencePoints);
}
IEnumerable<LocalVariable> localVariables = typeSystemContext.GetLocalVariableNamesForMethod(method);
if (localVariables != null)
ilImporter.SetLocalVariables(localVariables);
IEnumerable<string> parameters = typeSystemContext.GetParameterNamesForMethod(method);
if (parameters != null)
ilImporter.SetParameterNames(parameters);
methodCode = ilImporter.Compile();
}
catch (Exception e)
{
_compilation.Log.WriteLine(e.Message + " (" + method + ")");
methodCode = GetCppMethodDeclaration(method, true) + " { throw 0xC000C000; }" + Environment.NewLine;
}
_compilation.GetRegisteredMethod(method).MethodCode = methodCode;
}
/// <summary>
/// Get the NativeLayout for a method from a ReadyToRun image.
/// </summary>
public bool TryGetMetadataNativeLayout(MethodDesc concreteMethod, out IntPtr nativeLayoutInfoModule, out uint nativeLayoutInfoToken)
{
nativeLayoutInfoModule = default(IntPtr);
nativeLayoutInfoToken = 0;
#if SUPPORTS_NATIVE_METADATA_TYPE_LOADING
var nativeMetadataType = concreteMethod.GetTypicalMethodDefinition() as TypeSystem.NativeFormat.NativeFormatMethod;
if (nativeMetadataType == null)
return false;
var canonForm = concreteMethod.GetCanonMethodTarget(CanonicalFormKind.Specific);
var hashCode = canonForm.GetHashCode();
var loadedModulesCount = RuntimeAugments.GetLoadedModules(null);
var loadedModuleHandles = new IntPtr[loadedModulesCount];
var loadedModules = RuntimeAugments.GetLoadedModules(loadedModuleHandles);
Debug.Assert(loadedModulesCount == loadedModules);
#if SUPPORTS_R2R_LOADING
foreach (var moduleHandle in loadedModuleHandles)
{
ExternalReferencesTable externalFixupsTable;
NativeHashtable methodTemplatesHashtable = LoadHashtable(moduleHandle, ReflectionMapBlob.MetadataBasedGenericMethodsTemplateMap, out externalFixupsTable);
if (methodTemplatesHashtable.IsNull)
continue;
var enumerator = methodTemplatesHashtable.Lookup(hashCode);
var nativeMetadataUnit = nativeMetadataType.Context.ResolveMetadataUnit(moduleHandle);
NativeParser entryParser;
while (!(entryParser = enumerator.GetNext()).IsNull)
{
var entryTypeHandle = entryParser.GetUnsigned().AsHandle();
MethodDesc methodDesc = nativeMetadataUnit.GetMethod(entryTypeHandle, null);
Debug.Assert(methodDesc != null);
if (methodDesc == canonForm)
{
TypeLoaderLogger.WriteLine("Found metadata template for method " + concreteMethod.ToString() + ": " + methodDesc.ToString());
nativeLayoutInfoToken = (uint)externalFixupsTable.GetRvaFromIndex(entryParser.GetUnsigned());
if (nativeLayoutInfoToken == BadTokenFixupValue)
{
throw new BadImageFormatException();
}
nativeLayoutInfoModule = moduleHandle;
return true;
}
}
}
#endif
#endif
return false;
}
