public override MethodIL EmitIL()
{
// Target has the same signature as the Invoke method, except it's static.
MethodSignatureBuilder builder = new MethodSignatureBuilder(Signature);
builder.Flags = Signature.Flags | MethodSignatureFlags.Static;
var emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
// Load all arguments except 'this'
for (int i = 0; i < Signature.Length; i++)
{
codeStream.EmitLdArg(i + 1);
}
// Indirectly call the delegate target static method.
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(ExtraFunctionPointerOrDataField));
codeStream.Emit(ILOpcode.calli, emitter.NewToken(builder.ToSignature()));
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
public override MethodIL EmitIL()
{
var emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
// Load the stored 'this'
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(HelperObjectField));
// Load all arguments except 'this'
for (int i = 0; i < Signature.Length; i++)
{
codeStream.EmitLdArg(i + 1);
}
// Indirectly call the delegate target
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(ExtraFunctionPointerOrDataField));
codeStream.Emit(ILOpcode.calli, emitter.NewToken(Signature));
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
public static MethodIL EmitIL(MethodDesc method)
{
Debug.Assert(((MetadataType)method.OwningType).Name == "Interlocked");
if (method.HasInstantiation && method.Name == "CompareExchange")
{
TypeDesc objectType = method.Context.GetWellKnownType(WellKnownType.Object);
MethodDesc compareExchangeObject = method.OwningType.GetKnownMethod("CompareExchange",
new MethodSignature(
MethodSignatureFlags.Static,
genericParameterCount: 0,
returnType: objectType,
parameters: new TypeDesc[] { objectType.MakeByRefType(), objectType, objectType }));
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.EmitLdArg(1);
codeStream.EmitLdArg(2);
codeStream.Emit(ILOpcode.call, emit.NewToken(compareExchangeObject));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
return(null);
}
public override MethodIL EmitIL()
{
TypeDesc[] targetMethodParameters = new TypeDesc[Signature.Length + 1];
targetMethodParameters[0] = Context.GetWellKnownType(WellKnownType.Object);
for (int i = 0; i < Signature.Length; i++)
{
targetMethodParameters[i + 1] = Signature[i];
}
var targetMethodSignature = new MethodSignature(
Signature.Flags | MethodSignatureFlags.Static, 0, Signature.ReturnType, targetMethodParameters);
var emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
// Load the stored 'this'
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(HelperObjectField));
// Load all arguments except 'this'
for (int i = 0; i < Signature.Length; i++)
{
codeStream.EmitLdArg(i + 1);
}
// Indirectly call the delegate target static method.
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(ExtraFunctionPointerOrDataField));
codeStream.Emit(ILOpcode.calli, emitter.NewToken(targetMethodSignature));
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
public override MethodIL EmitIL()
{
Debug.Assert(Signature.Length > 0);
var emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
// Load all arguments except delegate's 'this'
TypeDesc boxThisType = null;
TypeDesc[] parameters = new TypeDesc[Signature.Length - 1];
for (int i = 0; i < Signature.Length; i++)
{
codeStream.EmitLdArg(i + 1);
if (i == 0)
{
// Ensure that we're working with an object type by boxing it here.
// This is to allow delegates which are generic over thier first parameter
// to have valid code in their thunk.
if (Signature[i].IsSignatureVariable)
{
boxThisType = Signature[i];
codeStream.Emit(ILOpcode.box, emitter.NewToken(boxThisType));
}
}
else
{
parameters[i - 1] = Signature[i];
}
}
// Call a helper to get the actual method target
codeStream.EmitLdArg(0);
if (Signature[0].IsByRef)
{
codeStream.Emit(ILOpcode.ldnull);
}
else
{
codeStream.EmitLdArg(1);
if (boxThisType != null)
{
codeStream.Emit(ILOpcode.box, emitter.NewToken(boxThisType));
}
}
codeStream.Emit(ILOpcode.call, emitter.NewToken(SystemDelegateType.GetKnownMethod("GetActualTargetFunctionPointer", null)));
MethodSignature targetSignature = new MethodSignature(0, 0, Signature.ReturnType, parameters);
codeStream.Emit(ILOpcode.calli, emitter.NewToken(targetSignature));
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
/// <summary>
/// This thunk creates a delegate from a native function pointer
/// by first creating a PInvokeDelegateWrapper from the function pointer
/// and then creating the delegate from the Invoke method of the wrapper
///
/// Generated IL:
/// ldarg 0
/// newobj PInvokeDelegateWrapper.ctor
/// dup
/// ldvirtftn PInvokeDelegateWrapper.Invoke
/// newobj DelegateType.ctor
/// ret
///
/// Equivalent C#
/// return new DelegateType(new PInvokeDelegateWrapper(functionPointer).Invoke)
/// </summary>
public override MethodIL EmitIL()
{
var emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.newobj, emitter.NewToken(
_interopStateManager.GetPInvokeDelegateWrapper(DelegateType)
.GetPInvokeDelegateWrapperMethod(PInvokeDelegateWrapperMethodKind.Constructor)));
codeStream.Emit(ILOpcode.dup);
codeStream.Emit(ILOpcode.ldvirtftn, emitter.NewToken(
_interopStateManager.GetPInvokeDelegateWrapper(DelegateType)
.GetPInvokeDelegateWrapperMethod(PInvokeDelegateWrapperMethodKind.Invoke)));
codeStream.Emit(ILOpcode.newobj, emitter.NewToken(
_delegateType.GetMethod(".ctor",
new MethodSignature(MethodSignatureFlags.None,
genericParameterCount: 0,
returnType: Context.GetWellKnownType(WellKnownType.Void),
parameters: new TypeDesc[] { Context.GetWellKnownType(WellKnownType.Object),
Context.GetWellKnownType(WellKnownType.IntPtr) }
))));
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
private void EmitLoadInteriorAddress(ILCodeStream codeStream, int offset)
{
codeStream.EmitLdArg(0); // this
codeStream.Emit(ILOpcode.ldflda, _helperFieldToken);
codeStream.EmitLdc(offset);
codeStream.Emit(ILOpcode.add);
}
public static MethodIL EmitIL(MethodDesc method)
{
Debug.Assert(((MetadataType)method.OwningType).Name == "MemoryMarshal");
string methodName = method.Name;
if (method.Instantiation.Length != 1)
{
return(null); // we only handle the generic method GetArrayDataReference<T>(T[])
}
if (methodName == "GetArrayDataReference")
{
var rawArrayData = method.Context.SystemModule.GetKnownType("System.Runtime.CompilerServices", "RawArrayData");
#if READYTORUN
if (!rawArrayData.IsNonVersionable())
{
return(null); // This is only an intrinsic if we can prove that RawArrayData is known to be of fixed offset
}
#endif
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldflda, emit.NewToken(rawArrayData.GetField("Data")));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
// unknown method
return(null);
}
private void EmitLoadInteriorAddress(ILCodeStream codeStream, int offset)
{
codeStream.EmitLdArg(0); // this
codeStream.Emit(ILOpcode.ldflda, _helperFieldToken);
codeStream.EmitLdc(offset);
codeStream.Emit(ILOpcode.add);
}
private static MethodIL EmitInitBlock(MethodDesc method, bool unaligned)
{
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.EmitLdArg(1);
codeStream.EmitLdArg(2);
if (unaligned)
{
codeStream.EmitUnaligned();
}
codeStream.Emit(ILOpcode.initblk);
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
/// <summary>
/// Loads the value of field of a struct at argument index argIndex to stack
/// </summary>
private void LoadFieldValueFromArg(int argIndex, FieldDesc field, PInvokeILCodeStreams pInvokeILCodeStreams)
{
ILCodeStream stream = pInvokeILCodeStreams.MarshallingCodeStream;
ILEmitter emitter = pInvokeILCodeStreams.Emitter;
stream.EmitLdArg(argIndex);
stream.Emit(ILOpcode.ldfld, emitter.NewToken(field));
}
private static MethodIL EmitCopy(MethodDesc method)
{
Debug.Assert(method.Signature.IsStatic && method.Signature.Length == 2);
TypeSystemContext context = method.Context;
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
ILToken token = emit.NewToken(context.GetSignatureVariable(0, method: true));
codeStream.EmitLdArg(0);
codeStream.EmitLdArg(1);
codeStream.Emit(ILOpcode.ldobj, token);
codeStream.Emit(ILOpcode.stobj, token);
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
public static MethodIL EmitIL(MethodDesc method)
{
Debug.Assert(((MetadataType)method.OwningType).Name == "Stream");
bool isRead = method.Name == "HasOverriddenBeginEndRead";
if (!isRead && method.Name != "HasOverriddenBeginEndWrite")
{
return(null);
}
TypeDesc streamClass = method.OwningType;
MethodDesc beginMethod = streamClass.GetMethod(isRead ? "BeginRead" : "BeginWrite", null);
MethodDesc endMethod = streamClass.GetMethod(isRead ? "EndRead" : "EndWrite", null);
ILEmitter emitter = new ILEmitter();
ILCodeStream codestream = emitter.NewCodeStream();
ILCodeLabel lOverriden = emitter.NewCodeLabel();
ILToken beginMethodToken = emitter.NewToken(beginMethod);
codestream.EmitLdArg(0);
codestream.Emit(ILOpcode.ldvirtftn, beginMethodToken);
codestream.Emit(ILOpcode.ldftn, beginMethodToken);
codestream.Emit(ILOpcode.bne_un, lOverriden);
ILToken endMethodToken = emitter.NewToken(endMethod);
codestream.EmitLdArg(0);
codestream.Emit(ILOpcode.ldvirtftn, endMethodToken);
codestream.Emit(ILOpcode.ldftn, endMethodToken);
codestream.Emit(ILOpcode.bne_un, lOverriden);
codestream.EmitLdc(0);
codestream.Emit(ILOpcode.ret);
codestream.EmitLabel(lOverriden);
codestream.EmitLdc(1);
codestream.Emit(ILOpcode.ret);
return(emitter.Link(method));
}
public static MethodIL EmitIL(MethodDesc method)
{
Debug.Assert(method.OwningType.IsDelegate);
Debug.Assert(method.IsRuntimeImplemented);
if (method.Name == "BeginInvoke" || method.Name == "EndInvoke")
{
// BeginInvoke and EndInvoke are not supported on .NET Core
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
MethodDesc notSupportedExceptionHelper = method.Context.GetHelperEntryPoint("ThrowHelpers", "ThrowPlatformNotSupportedException");
codeStream.EmitCallThrowHelper(emit, notSupportedExceptionHelper);
return(emit.Link(method));
}
if (method.Name == ".ctor")
{
TypeSystemContext context = method.Context;
ILEmitter emit = new ILEmitter();
TypeDesc delegateType = context.GetWellKnownType(WellKnownType.MulticastDelegate).BaseType;
MethodDesc objectCtorMethod = context.GetWellKnownType(WellKnownType.Object).GetDefaultConstructor();
FieldDesc functionPointerField = delegateType.GetKnownField("m_functionPointer");
FieldDesc firstParameterField = delegateType.GetKnownField("m_firstParameter");
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.call, emit.NewToken(objectCtorMethod));
codeStream.EmitLdArg(0);
codeStream.EmitLdArg(1);
codeStream.Emit(ILOpcode.stfld, emit.NewToken(firstParameterField));
codeStream.EmitLdArg(0);
codeStream.EmitLdArg(2);
codeStream.Emit(ILOpcode.stfld, emit.NewToken(functionPointerField));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
return(null);
}
public static MethodIL EmitIL(MethodDesc method)
{
Debug.Assert(method.OwningType.IsDelegate);
Debug.Assert(method.IsRuntimeImplemented);
if (method.Name == "BeginInvoke" || method.Name == "EndInvoke")
{
// BeginInvoke and EndInvoke are not supported on .NET Core
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
MethodDesc notSupportedExceptionHelper = method.Context.GetHelperEntryPoint("ThrowHelpers", "ThrowPlatformNotSupportedException");
codeStream.EmitCallThrowHelper(emit, notSupportedExceptionHelper);
return(emit.Link(method));
}
if (method.Name == ".ctor")
{
// TODO: this should be an assert that codegen never asks for this.
// This is just a workaround for https://github.com/dotnet/corert/issues/2102
// The code below is making a wild guess that we're creating a closed
// instance delegate. Without shared generics, this should only happen
// for virtual method (so we're fine there). With shared generics, this can
// happen for anything and might be pretty wrong.
TypeSystemContext context = method.Context;
ILEmitter emit = new ILEmitter();
TypeDesc delegateType = context.GetWellKnownType(WellKnownType.MulticastDelegate).BaseType;
MethodDesc initializeMethod = delegateType.GetKnownMethod("InitializeClosedInstanceSlow", null);
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.EmitLdArg(1);
codeStream.EmitLdArg(2);
codeStream.Emit(ILOpcode.call, emit.NewToken(initializeMethod));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
return(null);
}
public override MethodIL EmitIL()
{
ILEmitter emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.constrained, emitter.NewToken(_owningType.UnderlyingType));
codeStream.Emit(ILOpcode.callvirt, emitter.NewToken(ObjectGetHashCodeMethod));
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
void EmitLoadInteriorAddress(ILCodeStream codeStream, int offset)
{
// This helper field is needed to generate proper GC tracking. There is no direct way
// to create interior pointer.
if (_helperFieldToken == 0)
_helperFieldToken = NewToken(_method.Context.GetWellKnownType(WellKnownType.Object).GetField("m_pEEType"));
codeStream.EmitLdArg(0); // this
codeStream.Emit(ILOpcode.ldflda, _helperFieldToken);
codeStream.EmitLdc(offset);
codeStream.Emit(ILOpcode.add);
}
public override MethodIL EmitIL()
{
ILEmitter emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
// InstantiateAsOpen covers the weird case of generic enums
TypeDesc owningTypeAsOpen = _owningType.InstantiateAsOpen();
ILCodeLabel lNotEqual = emitter.NewCodeLabel();
// if (!(obj is {enumtype}))
// return false;
codeStream.EmitLdArg(1);
codeStream.Emit(ILOpcode.isinst, emitter.NewToken(owningTypeAsOpen));
codeStream.Emit(ILOpcode.dup);
codeStream.Emit(ILOpcode.brfalse, lNotEqual);
// return ({underlyingtype})this == ({underlyingtype})obj;
// PREFER: ILOpcode.unbox, but the codegen for that is pretty bad
codeStream.Emit(ILOpcode.ldflda, emitter.NewToken(Context.GetWellKnownType(WellKnownType.Object).GetKnownField("m_pEEType")));
codeStream.EmitLdc(Context.Target.PointerSize);
codeStream.Emit(ILOpcode.add);
codeStream.EmitLdInd(owningTypeAsOpen);
codeStream.EmitLdArg(0);
codeStream.EmitLdInd(owningTypeAsOpen);
codeStream.Emit(ILOpcode.ceq);
codeStream.Emit(ILOpcode.ret);
codeStream.EmitLabel(lNotEqual);
codeStream.Emit(ILOpcode.pop);
codeStream.EmitLdc(0);
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
public static MethodIL EmitIL(
#if READYTORUN
ILCompiler.CompilationModuleGroup compilationModuleGroup,
#endif // READYTORUN
MethodDesc method)
{
Debug.Assert(((MetadataType)method.OwningType).Name == "Interlocked");
if (method.HasInstantiation && method.Name == "CompareExchange")
{
#if READYTORUN
// Check to see if the tokens needed to describe the CompareExchange are naturally present within
// the compilation. The current implementation of stable tokens used by cross module inlining is not
// compatible with rewriting the IL of a compiler generated intrinsic. Fortunately, it turns out
// that the managed implementation of this intrinsic is correct, just a few more IL instructions.
if (compilationModuleGroup.ContainsType(method.OwningType))
#endif // READYTORUN
{
TypeDesc objectType = method.Context.GetWellKnownType(WellKnownType.Object);
MethodDesc compareExchangeObject = method.OwningType.GetKnownMethod("CompareExchange",
new MethodSignature(
MethodSignatureFlags.Static,
genericParameterCount: 0,
returnType: objectType,
parameters: new TypeDesc[] { objectType.MakeByRefType(), objectType, objectType }));
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.EmitLdArg(1);
codeStream.EmitLdArg(2);
codeStream.Emit(ILOpcode.call, emit.NewToken(compareExchangeObject));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
}
return(null);
}
private void StoreFieldValueFromArg(int argIndex, FieldDesc field, PInvokeILCodeStreams pInvokeILCodeStreams)
{
ILCodeStream stream = pInvokeILCodeStreams.MarshallingCodeStream;
ILEmitter emitter = pInvokeILCodeStreams.Emitter;
Internal.IL.Stubs.ILLocalVariable var = emitter.NewLocal(field.FieldType);
stream.EmitStLoc(var);
stream.EmitLdArg(argIndex);
stream.EmitLdLoc(var);
stream.Emit(ILOpcode.stfld, emitter.NewToken(field));
}
public override MethodIL EmitIL()
{
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
Debug.Assert(Signature[0] == _helperMethod.Signature[0]);
codeStream.EmitLdArg(0);
Debug.Assert(_helperMethod.Signature[1].IsString);
codeStream.Emit(ILOpcode.ldstr, emit.NewToken(DefaultAssemblyName));
for (int i = 2; i < _helperMethod.Signature.Length; i++)
{
// The helper method could be expecting more arguments than what we have - check for that
// The thunk represents one of the 6 possible overloads:
// (String), (String, bool), (String, bool, bool)
// (String, Func<...>, Func<...>), (String, Func<...>, Func<...>, bool), (String, Func<...>, Func<...>, bool, bool)
// We only need 2 helpers to support all 6 overloads. The default value for the bools is false.
if (i - 1 < Signature.Length)
{
// Pass user's parameter
Debug.Assert(_helperMethod.Signature[i] == Signature[i - 1]);
codeStream.EmitLdArg(i - 1);
}
else
{
// Pass a default value
Debug.Assert(_helperMethod.Signature[i].IsWellKnownType(WellKnownType.Boolean));
codeStream.EmitLdc(0);
}
}
codeStream.Emit(ILOpcode.call, emit.NewToken(_helperMethod));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(this));
}
private static MethodIL EmitReadWrite(MethodDesc method, bool write, bool unaligned = false)
{
Debug.Assert(method.Signature.IsStatic && method.Signature.Length == (write ? 2 : 1));
TypeSystemContext context = method.Context;
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
if (write)
{
codeStream.EmitLdArg(1);
}
if (unaligned)
{
codeStream.EmitUnaligned();
}
codeStream.Emit(write ? ILOpcode.stobj : ILOpcode.ldobj,
emit.NewToken(context.GetSignatureVariable(0, method: true)));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
void EmitLoadInteriorAddress(ILCodeStream codeStream, int offset)
{
// This helper field is needed to generate proper GC tracking. There is no direct way
// to create interior pointer.
if (_helperFieldToken == 0)
{
_helperFieldToken = NewToken(_method.Context.GetWellKnownType(WellKnownType.Object).GetField("m_pEEType"));
}
codeStream.EmitLdArg(0); // this
codeStream.Emit(ILOpcode.ldflda, _helperFieldToken);
codeStream.EmitLdc(offset);
codeStream.Emit(ILOpcode.add);
}
public static MethodIL EmitIL(MethodDesc method)
{
Debug.Assert(((MetadataType)method.OwningType).Name == "MemoryMarshal");
string methodName = method.Name;
if (methodName == "GetArrayDataReference")
{
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldflda, emit.NewToken(method.Context.SystemModule.GetKnownType("System.Runtime.CompilerServices", "RawArrayData").GetField("Data")));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
// unknown method
return(null);
}
private void EmitCalli(PInvokeILCodeStreams ilCodeStreams, CalliMarshallingMethodThunk calliThunk)
{
ILEmitter emitter = ilCodeStreams.Emitter;
ILCodeStream callsiteSetupCodeStream = ilCodeStreams.CallsiteSetupCodeStream;
TypeDesc nativeReturnType = _marshallers[0].NativeParameterType;
TypeDesc[] nativeParameterTypes = new TypeDesc[_marshallers.Length - 1];
for (int i = 1; i < _marshallers.Length; i++)
{
nativeParameterTypes[i - 1] = _marshallers[i].NativeParameterType;
}
MethodSignature nativeSig = new MethodSignature(
calliThunk.TargetSignature.Flags, 0, nativeReturnType,
nativeParameterTypes, calliThunk.TargetSignature.GetEmbeddedSignatureData());
callsiteSetupCodeStream.EmitLdArg(calliThunk.TargetSignature.Length);
callsiteSetupCodeStream.Emit(ILOpcode.calli, emitter.NewToken(nativeSig));
}
public override MethodIL EmitIL()
{
ILEmitter emitter = new ILEmitter();
ILCodeStream argSetupStream = emitter.NewCodeStream();
ILCodeStream callSiteSetupStream = emitter.NewCodeStream();
// This function will look like
//
// !For each parameter to the delegate
// !if (parameter is In Parameter)
// localX is TypeOfParameterX&
// ldtoken TypeOfParameterX
// call DynamicInvokeParamHelperIn(RuntimeTypeHandle)
// stloc localX
// !else
// localX is TypeOfParameter
// ldtoken TypeOfParameterX
// call DynamicInvokeParamHelperRef(RuntimeTypeHandle)
// stloc localX
// ldarg.3
// call DynamicInvokeArgSetupComplete(ref ArgSetupState)
// *** Second instruction stream starts here ***
// ldarg.1 // Load this pointer
// !For each parameter
// !if (parameter is In Parameter)
// ldloc localX
// ldobj TypeOfParameterX
// !else
// ldloc localX
// ldarg.1
// calli ReturnType thiscall(TypeOfParameter1, ...)
// !if ((ReturnType == void)
// ldnull
// !else if (ReturnType is a byref)
// ldobj StripByRef(ReturnType)
// box StripByRef(ReturnType)
// !else
// box ReturnType
// ret
callSiteSetupStream.EmitLdArg(1);
MethodSignature delegateSignature = _delegateInfo.Signature;
TypeDesc[] targetMethodParameters = new TypeDesc[delegateSignature.Length];
for (int paramIndex = 0; paramIndex < delegateSignature.Length; paramIndex++)
{
TypeDesc paramType = delegateSignature[paramIndex];
TypeDesc localType = paramType;
targetMethodParameters[paramIndex] = paramType;
if (localType.IsByRef)
{
// Strip ByRef
localType = ((ByRefType)localType).ParameterType;
}
else
{
// Only if this is not a ByRef, convert the parameter type to something boxable.
// Everything but pointer types are boxable.
localType = ConvertToBoxableType(localType);
}
ILLocalVariable local = emitter.NewLocal(localType.MakeByRefType());
callSiteSetupStream.EmitLdLoc(local);
argSetupStream.Emit(ILOpcode.ldtoken, emitter.NewToken(localType));
if (paramType.IsByRef)
{
argSetupStream.Emit(ILOpcode.call, emitter.NewToken(InvokeUtilsType.GetKnownMethod("DynamicInvokeParamHelperRef", null)));
}
else
{
argSetupStream.Emit(ILOpcode.call, emitter.NewToken(InvokeUtilsType.GetKnownMethod("DynamicInvokeParamHelperIn", null)));
callSiteSetupStream.Emit(ILOpcode.ldobj, emitter.NewToken(paramType));
}
argSetupStream.EmitStLoc(local);
}
argSetupStream.EmitLdArg(3);
argSetupStream.Emit(ILOpcode.call, emitter.NewToken(InvokeUtilsType.GetKnownMethod("DynamicInvokeArgSetupComplete", null)));
callSiteSetupStream.EmitLdArg(2);
MethodSignature targetMethodSig = new MethodSignature(0, 0, delegateSignature.ReturnType, targetMethodParameters);
callSiteSetupStream.Emit(ILOpcode.calli, emitter.NewToken(targetMethodSig));
if (delegateSignature.ReturnType.IsVoid)
{
callSiteSetupStream.Emit(ILOpcode.ldnull);
}
else if (delegateSignature.ReturnType.IsByRef)
{
TypeDesc targetType = ((ByRefType)delegateSignature.ReturnType).ParameterType;
callSiteSetupStream.Emit(ILOpcode.ldobj, emitter.NewToken(targetType));
callSiteSetupStream.Emit(ILOpcode.box, emitter.NewToken(targetType));
}
else
{
callSiteSetupStream.Emit(ILOpcode.box, emitter.NewToken(delegateSignature.ReturnType));
}
callSiteSetupStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
public override MethodIL EmitIL()
{
// We will generate the following code:
//
// object ret;
// object[] args = new object[parameterCount];
// args[0] = param0;
// args[1] = param1;
// ...
// try {
// ret = ((Func<object[], object>)dlg.m_helperObject)(args);
// } finally {
// param0 = (T0)args[0]; // only generated for each byref argument
// }
// return (TRet)ret;
ILEmitter emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
TypeDesc objectType = Context.GetWellKnownType(WellKnownType.Object);
TypeDesc objectArrayType = objectType.MakeArrayType();
ILLocalVariable argsLocal = emitter.NewLocal(objectArrayType);
bool hasReturnValue = !Signature.ReturnType.IsVoid;
bool hasRefArgs = false;
if (Signature.Length > 0)
{
codeStream.EmitLdc(Signature.Length);
codeStream.Emit(ILOpcode.newarr, emitter.NewToken(objectType));
codeStream.EmitStLoc(argsLocal);
for (int i = 0; i < Signature.Length; i++)
{
TypeDesc paramType = Signature[i];
bool paramIsByRef = false;
if (paramType.IsByRef)
{
hasRefArgs |= paramType.IsByRef;
paramIsByRef = true;
paramType = ((ByRefType)paramType).ParameterType;
}
hasRefArgs |= paramType.IsByRef;
codeStream.EmitLdLoc(argsLocal);
codeStream.EmitLdc(i);
codeStream.EmitLdArg(i + 1);
TypeDesc boxableParamType = DelegateDynamicInvokeThunk.ConvertToBoxableType(paramType);
ILToken boxableParamToken = emitter.NewToken(boxableParamType);
if (paramIsByRef)
{
codeStream.Emit(ILOpcode.ldobj, boxableParamToken);
}
codeStream.Emit(ILOpcode.box, boxableParamToken);
codeStream.Emit(ILOpcode.stelem_ref);
}
}
else
{
MethodDesc emptyObjectArrayMethod = Context.GetHelperEntryPoint("DelegateHelpers", "GetEmptyObjectArray");
codeStream.Emit(ILOpcode.call, emitter.NewToken(emptyObjectArrayMethod));
codeStream.EmitStLoc(argsLocal);
}
if (hasRefArgs)
{
// we emit a try/finally to update the args array even if an exception is thrown
// ilgen.BeginTryBody();
}
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(HelperObjectField));
MetadataType funcType = Context.SystemModule.GetKnownType("System", "Func`2");
TypeDesc instantiatedFunc = funcType.MakeInstantiatedType(objectArrayType, objectType);
codeStream.Emit(ILOpcode.castclass, emitter.NewToken(instantiatedFunc));
codeStream.EmitLdLoc(argsLocal);
MethodDesc invokeMethod = instantiatedFunc.GetKnownMethod("Invoke", null);
codeStream.Emit(ILOpcode.callvirt, emitter.NewToken(invokeMethod));
ILLocalVariable retLocal = (ILLocalVariable)(-1);
if (hasReturnValue)
{
retLocal = emitter.NewLocal(objectType);
codeStream.EmitStLoc(retLocal);
}
else
{
codeStream.Emit(ILOpcode.pop);
}
if (hasRefArgs)
{
// ILGeneratorLabel returnLabel = new ILGeneratorLabel();
// ilgen.Emit(OperationCode.Leave, returnLabel);
// copy back ref/out args
//ilgen.BeginFinallyBlock();
for (int i = 0; i < Signature.Length; i++)
{
TypeDesc paramType = Signature[i];
if (paramType.IsByRef)
{
paramType = ((ByRefType)paramType).ParameterType;
TypeDesc boxableParamType = DelegateDynamicInvokeThunk.ConvertToBoxableType(paramType);
ILToken boxableParamToken = emitter.NewToken(boxableParamType);
// Update parameter
codeStream.EmitLdArg(i + 1);
codeStream.EmitLdLoc(argsLocal);
codeStream.EmitLdc(i);
codeStream.Emit(ILOpcode.ldelem_ref);
codeStream.Emit(ILOpcode.unbox_any, boxableParamToken);
codeStream.Emit(ILOpcode.stobj, boxableParamToken);
}
}
// ilgen.Emit(OperationCode.Endfinally);
// ilgen.EndTryBody();
// ilgen.MarkLabel(returnLabel);
}
if (hasReturnValue)
{
TypeDesc boxableReturnType = DelegateDynamicInvokeThunk.ConvertToBoxableType(Signature.ReturnType);
codeStream.EmitLdLoc(retLocal);
codeStream.Emit(ILOpcode.unbox_any, emitter.NewToken(boxableReturnType));
}
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
public MethodIL EmitIL()
{
MethodSignature targetMethodSignature = _targetMethod.Signature;
// We have 4 code streams:
// - _marshallingCodeStream is used to convert each argument into a native type and
// store that into the local
// - callsiteSetupCodeStream is used to used to load each previously generated local
// and call the actual target native method.
// - _returnValueMarshallingCodeStream is used to convert the native return value
// to managed one.
// - _unmarshallingCodestream is used to propagate [out] native arguments values to
// managed ones.
_emitter = new ILEmitter();
ILCodeStream fnptrLoadStream = _emitter.NewCodeStream();
_marshallingCodeStream = _emitter.NewCodeStream();
ILCodeStream callsiteSetupCodeStream = _emitter.NewCodeStream();
_returnValueMarshallingCodeStream = _emitter.NewCodeStream();
_unmarshallingCodestream = _emitter.NewCodeStream();
TypeDesc[] nativeParameterTypes = new TypeDesc[targetMethodSignature.Length];
//
// Parameter marshalling
//
//
// Convert each argument to something we can pass to native and store it in a local.
// Then load the local in the second code stream.
//
for (int i = 0; i < targetMethodSignature.Length; i++)
{
// TODO: throw if there's custom marshalling
_marshallingCodeStream.EmitLdArg(i);
TypeDesc nativeType = MarshalArgument(targetMethodSignature[i]);
nativeParameterTypes[i] = nativeType;
ILLocalVariable vMarshalledTypeTemp = _emitter.NewLocal(nativeType);
_marshallingCodeStream.EmitStLoc(vMarshalledTypeTemp);
callsiteSetupCodeStream.EmitLdLoc(vMarshalledTypeTemp);
}
//
// Return value marshalling
//
// TODO: throw if SetLastError is true
// TODO: throw if there's custom marshalling
TypeDesc nativeReturnType = MarshalReturnValue(targetMethodSignature.ReturnType);
if (UseLazyResolution(_targetMethod, _importMetadata.Module))
{
MetadataType lazyHelperType = _targetMethod.Context.GetHelperType("InteropHelpers");
FieldDesc lazyDispatchCell = new PInvokeLazyFixupField((DefType)_targetMethod.OwningType, _importMetadata);
fnptrLoadStream.Emit(ILOpcode.ldsflda, _emitter.NewToken(lazyDispatchCell));
fnptrLoadStream.Emit(ILOpcode.call, _emitter.NewToken(lazyHelperType.GetKnownMethod("ResolvePInvoke", null)));
MethodSignatureFlags unmanagedCallConv = PInvokeMetadata.GetUnmanagedCallingConvention(_importMetadata.Attributes);
MethodSignature nativeCalliSig = new MethodSignature(
targetMethodSignature.Flags | unmanagedCallConv, 0, nativeReturnType, nativeParameterTypes);
ILLocalVariable vNativeFunctionPointer = _emitter.NewLocal(_targetMethod.Context.GetWellKnownType(WellKnownType.IntPtr));
fnptrLoadStream.EmitStLoc(vNativeFunctionPointer);
callsiteSetupCodeStream.EmitLdLoc(vNativeFunctionPointer);
callsiteSetupCodeStream.Emit(ILOpcode.calli, _emitter.NewToken(nativeCalliSig));
}
else
{
// Eager call
PInvokeMetadata nativeImportMetadata =
new PInvokeMetadata(_importMetadata.Module, _importMetadata.Name ?? _targetMethod.Name, _importMetadata.Attributes);
MethodSignature nativeSig = new MethodSignature(
targetMethodSignature.Flags, 0, nativeReturnType, nativeParameterTypes);
MethodDesc nativeMethod =
new PInvokeTargetNativeMethod(_targetMethod.OwningType, nativeSig, nativeImportMetadata);
callsiteSetupCodeStream.Emit(ILOpcode.call, _emitter.NewToken(nativeMethod));
}
_unmarshallingCodestream.Emit(ILOpcode.ret);
return _emitter.Link(_targetMethod);
}
public override MethodIL EmitIL()
{
ILEmitter emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
ArrayType invocationListArrayType = SystemDelegateType.MakeArrayType();
ILLocalVariable delegateArrayLocal = emitter.NewLocal(invocationListArrayType);
ILLocalVariable invocationCountLocal = emitter.NewLocal(Context.GetWellKnownType(WellKnownType.Int32));
ILLocalVariable iteratorLocal = emitter.NewLocal(Context.GetWellKnownType(WellKnownType.Int32));
ILLocalVariable delegateToCallLocal = emitter.NewLocal(SystemDelegateType);
ILLocalVariable returnValueLocal = 0;
if (!Signature.ReturnType.IsVoid)
{
returnValueLocal = emitter.NewLocal(Signature.ReturnType);
}
// Fill in delegateArrayLocal
// Delegate[] delegateArrayLocal = (Delegate[])this.m_helperObject
// ldarg.0 (this pointer)
// ldfld Delegate.HelperObjectField
// castclass Delegate[]
// stloc delegateArrayLocal
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(HelperObjectField));
codeStream.Emit(ILOpcode.castclass, emitter.NewToken(invocationListArrayType));
codeStream.EmitStLoc(delegateArrayLocal);
// Fill in invocationCountLocal
// int invocationCountLocal = this.m_extraFunctionPointerOrData
// ldarg.0 (this pointer)
// ldfld Delegate.m_extraFunctionPointerOrData
// stloc invocationCountLocal
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(ExtraFunctionPointerOrDataField));
codeStream.EmitStLoc(invocationCountLocal);
// Fill in iteratorLocal
// int iteratorLocal = 0;
// ldc.0
// stloc iteratorLocal
codeStream.EmitLdc(0);
codeStream.EmitStLoc(iteratorLocal);
// Loop across every element of the array.
ILCodeLabel startOfLoopLabel = emitter.NewCodeLabel();
codeStream.EmitLabel(startOfLoopLabel);
// Implement as do/while loop. We only have this stub in play if we're in the multicast situation
// Find the delegate to call
// Delegate = delegateToCallLocal = delegateArrayLocal[iteratorLocal];
// ldloc delegateArrayLocal
// ldloc iteratorLocal
// ldelem System.Delegate
// stloc delegateToCallLocal
codeStream.EmitLdLoc(delegateArrayLocal);
codeStream.EmitLdLoc(iteratorLocal);
codeStream.Emit(ILOpcode.ldelem, emitter.NewToken(SystemDelegateType));
codeStream.EmitStLoc(delegateToCallLocal);
// Call the delegate
// returnValueLocal = delegateToCallLocal(...);
// ldloc delegateToCallLocal
// ldfld System.Delegate.m_firstParameter
// ldarg 1, n
// ldloc delegateToCallLocal
// ldfld System.Delegate.m_functionPointer
// calli returnValueType thiscall (all the params)
// IF there is a return value
// stloc returnValueLocal
codeStream.EmitLdLoc(delegateToCallLocal);
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(FirstParameterField));
for (int i = 0; i < Signature.Length; i++)
{
codeStream.EmitLdArg(i + 1);
}
codeStream.EmitLdLoc(delegateToCallLocal);
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(FunctionPointerField));
codeStream.Emit(ILOpcode.calli, emitter.NewToken(Signature));
if (returnValueLocal != 0)
{
codeStream.EmitStLoc(returnValueLocal);
}
// Increment iteratorLocal
// ++iteratorLocal;
// ldloc iteratorLocal
// ldc.i4.1
// add
// stloc iteratorLocal
codeStream.EmitLdLoc(iteratorLocal);
codeStream.EmitLdc(1);
codeStream.Emit(ILOpcode.add);
codeStream.EmitStLoc(iteratorLocal);
// Check to see if the loop is done
codeStream.EmitLdLoc(invocationCountLocal);
codeStream.EmitLdLoc(iteratorLocal);
codeStream.Emit(ILOpcode.bne_un, startOfLoopLabel);
// Return to caller. If the delegate has a return value, be certain to return that.
// return returnValueLocal;
// ldloc returnValueLocal
// ret
if (returnValueLocal != 0)
{
codeStream.EmitLdLoc(returnValueLocal);
}
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
public MethodIL EmitIL()
{
MethodSignature targetMethodSignature = _targetMethod.Signature;
// We have two code streams - one is used to convert each argument into a native type
// and store that into the local. The other is used to load each previously generated local
// and call the actual target native method.
_emitter = new ILEmitter();
_marshallingCodeStream = _emitter.NewCodeStream();
ILCodeStream callsiteSetupCodeStream = _emitter.NewCodeStream();
_returnValueMarshallingCodeStream = _emitter.NewCodeStream();
TypeDesc[] nativeParameterTypes = new TypeDesc[targetMethodSignature.Length];
//
// Parameter marshalling
//
//
// Convert each argument to something we can pass to native and store it in a local.
// Then load the local in the second code stream.
//
for (int i = 0; i < targetMethodSignature.Length; i++)
{
// TODO: throw if there's custom marshalling
TypeDesc parameterType = targetMethodSignature[i];
_marshallingCodeStream.EmitLdArg(i);
TypeDesc nativeType;
if (parameterType.IsSzArray)
{
nativeType = EmitArrayMarshalling((ArrayType)parameterType);
}
else if (parameterType.IsByRef)
{
nativeType = EmitByRefMarshalling((ByRefType)parameterType);
}
else if (parameterType.IsString)
{
nativeType = EmitStringMarshalling();
}
else if (parameterType.Category == TypeFlags.Boolean)
{
nativeType = EmitBooleanMarshalling();
}
else
{
if (!IsBlittableType(parameterType))
throw new NotSupportedException();
nativeType = parameterType.UnderlyingType;
}
nativeParameterTypes[i] = nativeType;
ILLocalVariable vMarshalledTypeTemp = _emitter.NewLocal(nativeType);
_marshallingCodeStream.EmitStLoc(vMarshalledTypeTemp);
callsiteSetupCodeStream.EmitLdLoc(vMarshalledTypeTemp);
}
//
// Return value marshalling
//
// TODO: throw if SetLastError is true
// TODO: throw if there's custom marshalling
TypeDesc returnType = targetMethodSignature.ReturnType;
TypeDesc nativeReturnType;
if (returnType.IsVoid)
{
nativeReturnType = returnType;
}
else if (returnType.Category == TypeFlags.Boolean)
{
nativeReturnType = EmitBooleanReturnValueMarshalling();
}
else
{
if (!IsBlittableType(returnType))
throw new NotSupportedException();
nativeReturnType = returnType;
}
MethodSignature nativeSig = new MethodSignature(
targetMethodSignature.Flags, 0, nativeReturnType, nativeParameterTypes);
MethodDesc nativeMethod =
new PInvokeTargetNativeMethod(_targetMethod.OwningType, nativeSig, _importMetadata);
// Call the native method
callsiteSetupCodeStream.Emit(ILOpcode.call, _emitter.NewToken(nativeMethod));
callsiteSetupCodeStream.Emit(ILOpcode.ret);
return _emitter.Link();
}
public static MethodIL EmitIL(MethodDesc method)
{
Debug.Assert(((MetadataType)method.OwningType).Name == "RuntimeHelpers");
string methodName = method.Name;
if (methodName == "GetRawSzArrayData")
{
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldflda, emit.NewToken(method.Context.SystemModule.GetKnownType("System.Runtime.CompilerServices", "RawArrayData").GetField("Data")));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
// All the methods handled below are per-instantiation generic methods
if (method.Instantiation.Length != 1 || method.IsTypicalMethodDefinition)
{
return(null);
}
TypeDesc elementType = method.Instantiation[0];
// Fallback to non-intrinsic implementation for universal generics
if (elementType.IsCanonicalSubtype(CanonicalFormKind.Universal))
{
return(null);
}
bool result;
if (methodName == "IsReferenceOrContainsReferences")
{
result = elementType.IsGCPointer || (elementType is DefType defType && defType.ContainsGCPointers);
}
else if (methodName == "IsReference")
{
result = elementType.IsGCPointer;
}
else if (methodName == "IsBitwiseEquatable")
{
// Ideally we could detect automatically whether a type is trivially equatable
// (i.e., its operator == could be implemented via memcmp). But for now we'll
// do the simple thing and hardcode the list of types we know fulfill this contract.
// n.b. This doesn't imply that the type's CompareTo method can be memcmp-implemented,
// as a method like CompareTo may need to take a type's signedness into account.
switch (elementType.UnderlyingType.Category)
{
case TypeFlags.Boolean:
case TypeFlags.Byte:
case TypeFlags.SByte:
case TypeFlags.Char:
case TypeFlags.UInt16:
case TypeFlags.Int16:
case TypeFlags.UInt32:
case TypeFlags.Int32:
case TypeFlags.UInt64:
case TypeFlags.Int64:
case TypeFlags.IntPtr:
case TypeFlags.UIntPtr:
result = true;
break;
default:
var mdType = elementType as MetadataType;
if (mdType != null && mdType.Name == "Rune" && mdType.Namespace == "System.Text")
{
result = true;
}
else if (mdType != null && mdType.Name == "Char8" && mdType.Namespace == "System")
{
result = true;
}
else
{
result = false;
}
break;
}
}
else
{
return(null);
}
ILOpcode opcode = result ? ILOpcode.ldc_i4_1 : ILOpcode.ldc_i4_0;
return(new ILStubMethodIL(method, new byte[] { (byte)opcode, (byte)ILOpcode.ret }, Array.Empty <LocalVariableDefinition>(), Array.Empty <object>()));
}
private void EmitDelegateCall(DelegateMarshallingMethodThunk delegateMethod, PInvokeILCodeStreams ilCodeStreams)
{
ILEmitter emitter = ilCodeStreams.Emitter;
ILCodeStream fnptrLoadStream = ilCodeStreams.FunctionPointerLoadStream;
ILCodeStream callsiteSetupCodeStream = ilCodeStreams.CallsiteSetupCodeStream;
TypeSystemContext context = _targetMethod.Context;
Debug.Assert(delegateMethod != null);
if (delegateMethod.Kind == DelegateMarshallingMethodThunkKind.ReverseOpenStatic)
{
//
// For Open static delegates call
// InteropHelpers.GetCurrentCalleeOpenStaticDelegateFunctionPointer()
// which returns a function pointer. Just call the function pointer and we are done.
//
TypeDesc[] parameters = new TypeDesc[_marshallers.Length - 1];
for (int i = 1; i < _marshallers.Length; i++)
{
parameters[i - 1] = _marshallers[i].ManagedParameterType;
}
MethodSignature managedSignature = new MethodSignature(
MethodSignatureFlags.Static, 0, _marshallers[0].ManagedParameterType, parameters);
fnptrLoadStream.Emit(ILOpcode.call, emitter.NewToken(
delegateMethod.Context.GetHelperType("InteropHelpers").GetKnownMethod(
"GetCurrentCalleeOpenStaticDelegateFunctionPointer", null)));
ILLocalVariable vDelegateStub = emitter.NewLocal(
delegateMethod.Context.GetWellKnownType(WellKnownType.IntPtr));
fnptrLoadStream.EmitStLoc(vDelegateStub);
callsiteSetupCodeStream.EmitLdLoc(vDelegateStub);
callsiteSetupCodeStream.Emit(ILOpcode.calli, emitter.NewToken(managedSignature));
}
else if (delegateMethod.Kind == DelegateMarshallingMethodThunkKind.ReverseClosed)
{
//
// For closed delegates call
// InteropHelpers.GetCurrentCalleeDelegate<Delegate>
// which returns the delegate. Do a CallVirt on the invoke method.
//
MethodDesc instantiatedHelper = delegateMethod.Context.GetInstantiatedMethod(
delegateMethod.Context.GetHelperType("InteropHelpers")
.GetKnownMethod("GetCurrentCalleeDelegate", null),
new Instantiation((delegateMethod.DelegateType)));
fnptrLoadStream.Emit(ILOpcode.call, emitter.NewToken(instantiatedHelper));
ILLocalVariable vDelegateStub = emitter.NewLocal(delegateMethod.DelegateType);
fnptrLoadStream.EmitStLoc(vDelegateStub);
fnptrLoadStream.EmitLdLoc(vDelegateStub);
MethodDesc invokeMethod = delegateMethod.DelegateType.GetKnownMethod("Invoke", null);
callsiteSetupCodeStream.Emit(ILOpcode.callvirt, emitter.NewToken(invokeMethod));
}
else if (delegateMethod.Kind == DelegateMarshallingMethodThunkKind
.ForwardNativeFunctionWrapper)
{
// if the SetLastError flag is set in UnmanagedFunctionPointerAttribute, clear the error code before doing P/Invoke
if (_flags.SetLastError)
{
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(
InteropTypes.GetPInvokeMarshal(context).GetKnownMethod("ClearLastWin32Error", null)));
}
//
// For NativeFunctionWrapper we need to load the native function and call it
//
fnptrLoadStream.EmitLdArg(0);
fnptrLoadStream.Emit(ILOpcode.call, emitter.NewToken(InteropTypes
.GetNativeFunctionPointerWrapper(context)
.GetMethod("get_NativeFunctionPointer", null)));
var fnPtr = emitter.NewLocal(
context.GetWellKnownType(WellKnownType.IntPtr));
fnptrLoadStream.EmitStLoc(fnPtr);
callsiteSetupCodeStream.EmitLdLoc(fnPtr);
TypeDesc nativeReturnType = _marshallers[0].NativeParameterType;
TypeDesc[] nativeParameterTypes = new TypeDesc[_marshallers.Length - 1];
for (int i = 1; i < _marshallers.Length; i++)
{
nativeParameterTypes[i - 1] = _marshallers[i].NativeParameterType;
}
MethodSignature nativeSig = new MethodSignature(
MethodSignatureFlags.Static | _flags.UnmanagedCallingConvention, 0, nativeReturnType, nativeParameterTypes);
callsiteSetupCodeStream.Emit(ILOpcode.calli, emitter.NewToken(nativeSig));
// if the SetLastError flag is set in UnmanagedFunctionPointerAttribute, call the PInvokeMarshal.
// SaveLastWin32Error so that last error can be used later by calling
// PInvokeMarshal.GetLastWin32Error
if (_flags.SetLastError)
{
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(
InteropTypes.GetPInvokeMarshal(context)
.GetKnownMethod("SaveLastWin32Error", null)));
}
}
else
{
Debug.Fail("Unexpected DelegateMarshallingMethodThunkKind");
}
}
public MethodIL EmitIL()
{
MethodSignature targetMethodSignature = _targetMethod.Signature;
// We have 4 code streams:
// - _marshallingCodeStream is used to convert each argument into a native type and
// store that into the local
// - callsiteSetupCodeStream is used to used to load each previously generated local
// and call the actual target native method.
// - _returnValueMarshallingCodeStream is used to convert the native return value
// to managed one.
// - _unmarshallingCodestream is used to propagate [out] native arguments values to
// managed ones.
_emitter = new ILEmitter();
_marshallingCodeStream = _emitter.NewCodeStream();
ILCodeStream callsiteSetupCodeStream = _emitter.NewCodeStream();
_returnValueMarshallingCodeStream = _emitter.NewCodeStream();
_unmarshallingCodestream = _emitter.NewCodeStream();
TypeDesc[] nativeParameterTypes = new TypeDesc[targetMethodSignature.Length];
//
// Parameter marshalling
//
//
// Convert each argument to something we can pass to native and store it in a local.
// Then load the local in the second code stream.
//
for (int i = 0; i < targetMethodSignature.Length; i++)
{
// TODO: throw if there's custom marshalling
_marshallingCodeStream.EmitLdArg(i);
TypeDesc nativeType = MarshalArgument(targetMethodSignature[i]);
nativeParameterTypes[i] = nativeType;
ILLocalVariable vMarshalledTypeTemp = _emitter.NewLocal(nativeType);
_marshallingCodeStream.EmitStLoc(vMarshalledTypeTemp);
callsiteSetupCodeStream.EmitLdLoc(vMarshalledTypeTemp);
}
//
// Return value marshalling
//
// TODO: throw if SetLastError is true
// TODO: throw if there's custom marshalling
TypeDesc nativeReturnType = MarshalReturnValue(targetMethodSignature.ReturnType);
MethodSignature nativeSig = new MethodSignature(
targetMethodSignature.Flags, 0, nativeReturnType, nativeParameterTypes);
MethodDesc nativeMethod =
new PInvokeTargetNativeMethod(_targetMethod.OwningType, nativeSig, _importMetadata);
// Call the native method
callsiteSetupCodeStream.Emit(ILOpcode.call, _emitter.NewToken(nativeMethod));
_unmarshallingCodestream.Emit(ILOpcode.ret);
return(_emitter.Link());
}
public MethodIL EmitIL()
{
MethodSignature targetMethodSignature = _targetMethod.Signature;
// We have 4 code streams:
// - _marshallingCodeStream is used to convert each argument into a native type and
// store that into the local
// - callsiteSetupCodeStream is used to used to load each previously generated local
// and call the actual target native method.
// - _returnValueMarshallingCodeStream is used to convert the native return value
// to managed one.
// - _unmarshallingCodestream is used to propagate [out] native arguments values to
// managed ones.
_emitter = new ILEmitter();
_marshallingCodeStream = _emitter.NewCodeStream();
ILCodeStream callsiteSetupCodeStream = _emitter.NewCodeStream();
_returnValueMarshallingCodeStream = _emitter.NewCodeStream();
_unmarshallingCodestream = _emitter.NewCodeStream();
TypeDesc[] nativeParameterTypes = new TypeDesc[targetMethodSignature.Length];
//
// Parameter marshalling
//
//
// Convert each argument to something we can pass to native and store it in a local.
// Then load the local in the second code stream.
//
for (int i = 0; i < targetMethodSignature.Length; i++)
{
// TODO: throw if there's custom marshalling
_marshallingCodeStream.EmitLdArg(i);
TypeDesc nativeType = MarshalArgument(targetMethodSignature[i]);
nativeParameterTypes[i] = nativeType;
ILLocalVariable vMarshalledTypeTemp = _emitter.NewLocal(nativeType);
_marshallingCodeStream.EmitStLoc(vMarshalledTypeTemp);
callsiteSetupCodeStream.EmitLdLoc(vMarshalledTypeTemp);
}
//
// Return value marshalling
//
// TODO: throw if SetLastError is true
// TODO: throw if there's custom marshalling
TypeDesc nativeReturnType = MarshalReturnValue(targetMethodSignature.ReturnType);
MethodSignature nativeSig = new MethodSignature(
targetMethodSignature.Flags, 0, nativeReturnType, nativeParameterTypes);
MethodDesc nativeMethod =
new PInvokeTargetNativeMethod(_targetMethod.OwningType, nativeSig, _importMetadata);
// Call the native method
callsiteSetupCodeStream.Emit(ILOpcode.call, _emitter.NewToken(nativeMethod));
_unmarshallingCodestream.Emit(ILOpcode.ret);
return _emitter.Link();
}
public override MethodIL EmitIL()
{
ILEmitter emitter = new ILEmitter();
ILCodeStream argSetupStream = emitter.NewCodeStream();
ILCodeStream thisCallSiteSetupStream = emitter.NewCodeStream();
ILCodeStream staticCallSiteSetupStream = emitter.NewCodeStream();
// This function will look like
//
// !For each parameter to the method
// !if (parameter is In Parameter)
// localX is TypeOfParameterX&
// ldtoken TypeOfParameterX
// call DynamicInvokeParamHelperIn(RuntimeTypeHandle)
// stloc localX
// !else
// localX is TypeOfParameter
// ldtoken TypeOfParameterX
// call DynamicInvokeParamHelperRef(RuntimeTypeHandle)
// stloc localX
// ldarg.2
// call DynamicInvokeArgSetupComplete(ref ArgSetupState)
// *** Thiscall instruction stream starts here ***
// ldarg.3 // Load targetIsThisCall
// brfalse Not_this_call
// ldarg.0 // Load this pointer
// !For each parameter
// !if (parameter is In Parameter)
// ldloc localX
// ldobj TypeOfParameterX
// !else
// ldloc localX
// ldarg.1
// calli ReturnType thiscall(TypeOfParameter1, ...)
// !if ((ReturnType == void)
// ldnull
// !elif (ReturnType is pointer)
// System.Reflection.Pointer.Box(ReturnType)
// !else
// box ReturnType
// ret
// *** Static call instruction stream starts here ***
// Not_this_call:
// !For each parameter
// !if (parameter is In Parameter)
// ldloc localX
// ldobj TypeOfParameterX
// !else
// ldloc localX
// ldarg.1
// calli ReturnType (TypeOfParameter1, ...)
// !if ((ReturnType == void)
// ldnull
// !elif (ReturnType is pointer)
// System.Reflection.Pointer.Box(ReturnType)
// !else
// box ReturnType
// ret
ILCodeLabel lStaticCall = emitter.NewCodeLabel();
thisCallSiteSetupStream.EmitLdArg(3); // targetIsThisCall
thisCallSiteSetupStream.Emit(ILOpcode.brfalse, lStaticCall);
staticCallSiteSetupStream.EmitLabel(lStaticCall);
thisCallSiteSetupStream.EmitLdArg(0); // thisPtr
ILToken tokDynamicInvokeParamHelperRef =
emitter.NewToken(InvokeUtilsType.GetKnownMethod("DynamicInvokeParamHelperRef", null));
ILToken tokDynamicInvokeParamHelperIn =
emitter.NewToken(InvokeUtilsType.GetKnownMethod("DynamicInvokeParamHelperIn", null));
TypeDesc[] targetMethodSignature = new TypeDesc[_targetSignature.Length];
for (int paramIndex = 0; paramIndex < _targetSignature.Length; paramIndex++)
{
TypeDesc paramType = Context.GetSignatureVariable(paramIndex, true);
DynamicInvokeMethodParameterKind paramKind = _targetSignature[paramIndex];
if (paramKind == DynamicInvokeMethodParameterKind.Pointer)
{
for (int i = 0; i < _targetSignature.GetNumberOfParameterPointerIndirections(paramIndex); i++)
{
paramType = paramType.MakePointerType();
}
}
ILToken tokParamType = emitter.NewToken(paramType);
ILLocalVariable local = emitter.NewLocal(paramType.MakeByRefType());
thisCallSiteSetupStream.EmitLdLoc(local);
staticCallSiteSetupStream.EmitLdLoc(local);
argSetupStream.Emit(ILOpcode.ldtoken, tokParamType);
if (paramKind == DynamicInvokeMethodParameterKind.Reference)
{
argSetupStream.Emit(ILOpcode.call, tokDynamicInvokeParamHelperRef);
targetMethodSignature[paramIndex] = paramType.MakeByRefType();
}
else
{
argSetupStream.Emit(ILOpcode.call, tokDynamicInvokeParamHelperIn);
thisCallSiteSetupStream.Emit(ILOpcode.ldobj, tokParamType);
staticCallSiteSetupStream.Emit(ILOpcode.ldobj, tokParamType);
targetMethodSignature[paramIndex] = paramType;
}
argSetupStream.EmitStLoc(local);
}
argSetupStream.EmitLdArg(2); // argSetupState
argSetupStream.Emit(ILOpcode.call, emitter.NewToken(InvokeUtilsType.GetKnownMethod("DynamicInvokeArgSetupComplete", null)));
thisCallSiteSetupStream.EmitLdArg(1); // methodToCall
staticCallSiteSetupStream.EmitLdArg(1); // methodToCall
DynamicInvokeMethodParameterKind returnKind = _targetSignature.ReturnType;
TypeDesc returnType = returnKind != DynamicInvokeMethodParameterKind.None ?
Context.GetSignatureVariable(_targetSignature.Length, true) :
Context.GetWellKnownType(WellKnownType.Void);
if (returnKind == DynamicInvokeMethodParameterKind.Pointer)
{
for (int i = 0; i < _targetSignature.GetNumerOfReturnTypePointerIndirections(); i++)
{
returnType = returnType.MakePointerType();
}
}
MethodSignature thisCallMethodSig = new MethodSignature(0, 0, returnType, targetMethodSignature);
thisCallSiteSetupStream.Emit(ILOpcode.calli, emitter.NewToken(thisCallMethodSig));
MethodSignature staticCallMethodSig = new MethodSignature(MethodSignatureFlags.Static, 0, returnType, targetMethodSignature);
staticCallSiteSetupStream.Emit(ILOpcode.calli, emitter.NewToken(staticCallMethodSig));
if (returnKind == DynamicInvokeMethodParameterKind.None)
{
thisCallSiteSetupStream.Emit(ILOpcode.ldnull);
staticCallSiteSetupStream.Emit(ILOpcode.ldnull);
}
else if (returnKind == DynamicInvokeMethodParameterKind.Pointer)
{
thisCallSiteSetupStream.Emit(ILOpcode.ldtoken, emitter.NewToken(returnType));
staticCallSiteSetupStream.Emit(ILOpcode.ldtoken, emitter.NewToken(returnType));
MethodDesc getTypeFromHandleMethod =
Context.SystemModule.GetKnownType("System", "Type").GetKnownMethod("GetTypeFromHandle", null);
thisCallSiteSetupStream.Emit(ILOpcode.call, emitter.NewToken(getTypeFromHandleMethod));
staticCallSiteSetupStream.Emit(ILOpcode.call, emitter.NewToken(getTypeFromHandleMethod));
MethodDesc pointerBoxMethod =
Context.SystemModule.GetKnownType("System.Reflection", "Pointer").GetKnownMethod("Box", null);
thisCallSiteSetupStream.Emit(ILOpcode.call, emitter.NewToken(pointerBoxMethod));
staticCallSiteSetupStream.Emit(ILOpcode.call, emitter.NewToken(pointerBoxMethod));
}
else
{
Debug.Assert(returnKind == DynamicInvokeMethodParameterKind.Value);
ILToken tokReturnType = emitter.NewToken(returnType);
thisCallSiteSetupStream.Emit(ILOpcode.box, tokReturnType);
staticCallSiteSetupStream.Emit(ILOpcode.box, tokReturnType);
}
thisCallSiteSetupStream.Emit(ILOpcode.ret);
staticCallSiteSetupStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
