public static MethodIL EmitIL(MethodDesc method)
{
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
MethodDesc typeLoadExceptionHelper = method.Context.GetHelperEntryPoint("ThrowHelpers", "ThrowTypeLoadException");
codeStream.EmitCallThrowHelper(emit, typeLoadExceptionHelper);
return(emit.Link());
}
public override MethodIL EmitIL()
{
var emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
MetadataType throwHelpersType = Context.SystemModule.GetKnownType("Internal.Runtime.CompilerHelpers", "ThrowHelpers");
MethodDesc throwHelper = throwHelpersType.GetKnownMethod("ThrowNotSupportedException", null);
codeStream.EmitCallThrowHelper(emitter, throwHelper);
return(emitter.Link(this));
}
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 argSetupStream = emitter.NewCodeStream();
ILCodeStream thisCallSiteSetupStream = emitter.NewCodeStream();
ILCodeStream staticCallSiteSetupStream = emitter.NewCodeStream();
ILCodeStream returnCodeStream = emitter.NewCodeStream();
// This function will look like
//
// !For each parameter to the method
// !if (parameter is In Parameter)
// localX is TypeOfParameterX&
// ldarg.2
// ldtoken TypeOfParameterX
// call DynamicInvokeParamHelperIn(ref ArgSetupState, RuntimeTypeHandle)
// stloc localX
// !else
// localX is TypeOfParameter
// ldarg.2
// ldtoken TypeOfParameterX
// call DynamicInvokeParamHelperRef(ref ArgSetupState, 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, ...)
// br Process_return
// *** 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, ...)
// *** Return code stream starts here ***
// Process_return:
// !if (ReturnType is Byref)
// dup
// brfalse ByRefNull
// ldobj ReturnType
// !if ((ReturnType == void)
// ldnull
// !elif (ReturnType is pointer)
// System.Reflection.Pointer.Box(ReturnType)
// !else
// box ReturnType
// ret
//
// !if (ReturnType is ByRef)
// ByRefNull:
// throw NullReferenceException
ILCodeLabel lStaticCall = emitter.NewCodeLabel();
ILCodeLabel lProcessReturn = 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];
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.EmitLdArg(2); // argSetupState
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.EmitLdInd(paramType);
staticCallSiteSetupStream.EmitLdInd(paramType);
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);
for (int i = 0; i < _targetSignature.GetNumerOfReturnTypePointerIndirections(); i++)
{
returnType = returnType.MakePointerType();
}
if (returnKind == DynamicInvokeMethodParameterKind.Reference)
{
returnType = returnType.MakeByRefType();
}
MethodSignature thisCallMethodSig = new MethodSignature(0, 0, returnType, targetMethodSignature);
thisCallSiteSetupStream.Emit(ILOpcode.calli, emitter.NewToken(thisCallMethodSig));
thisCallSiteSetupStream.Emit(ILOpcode.br, lProcessReturn);
MethodSignature staticCallMethodSig = new MethodSignature(MethodSignatureFlags.Static, 0, returnType, targetMethodSignature);
staticCallSiteSetupStream.Emit(ILOpcode.calli, emitter.NewToken(staticCallMethodSig));
returnCodeStream.EmitLabel(lProcessReturn);
ILCodeLabel lByRefReturnNull = null;
if (returnKind == DynamicInvokeMethodParameterKind.None)
{
returnCodeStream.Emit(ILOpcode.ldnull);
}
else
{
TypeDesc returnTypeForBoxing = returnType;
if (returnType.IsByRef)
{
// If this is a byref return, we need to dereference first
returnTypeForBoxing = ((ByRefType)returnType).ParameterType;
lByRefReturnNull = emitter.NewCodeLabel();
returnCodeStream.Emit(ILOpcode.dup);
returnCodeStream.Emit(ILOpcode.brfalse, lByRefReturnNull);
returnCodeStream.EmitLdInd(returnTypeForBoxing);
}
if (returnTypeForBoxing.IsPointer)
{
// Pointers box differently
returnCodeStream.Emit(ILOpcode.ldtoken, emitter.NewToken(returnTypeForBoxing));
MethodDesc getTypeFromHandleMethod =
Context.SystemModule.GetKnownType("System", "Type").GetKnownMethod("GetTypeFromHandle", null);
returnCodeStream.Emit(ILOpcode.call, emitter.NewToken(getTypeFromHandleMethod));
MethodDesc pointerBoxMethod =
Context.SystemModule.GetKnownType("System.Reflection", "Pointer").GetKnownMethod("Box", null);
returnCodeStream.Emit(ILOpcode.call, emitter.NewToken(pointerBoxMethod));
}
else
{
ILToken tokReturnType = emitter.NewToken(returnTypeForBoxing);
returnCodeStream.Emit(ILOpcode.box, tokReturnType);
}
}
returnCodeStream.Emit(ILOpcode.ret);
if (lByRefReturnNull != null)
{
returnCodeStream.EmitLabel(lByRefReturnNull);
MethodDesc nullReferencedExceptionHelper = Context.GetHelperEntryPoint("ThrowHelpers", "ThrowInvokeNullRefReturned");
returnCodeStream.EmitCallThrowHelper(emitter, nullReferencedExceptionHelper);
}
return(emitter.Link(this));
}
public static MethodIL EmitIL(MethodDesc method)
{
Debug.Assert(method.OwningType.IsDelegate);
Debug.Assert(method.OwningType.IsTypeDefinition);
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")
{
// We only support delegate creation if the IL follows the delegate creation verifiability requirements
// described in ECMA-335 III.4.21 (newobj - create a new object). The codegen is expected to
// intrinsically expand the pattern.
// If the delegate creation doesn't follow the pattern, we generate code that throws at runtime.
// We could potentially implement this (unreliably) through the use of reflection metadata,
// but it remains to be proven that this is an actual customer scenario.
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 == "Invoke")
{
TypeSystemContext context = method.Context;
ILEmitter emit = new ILEmitter();
TypeDesc delegateType = context.GetWellKnownType(WellKnownType.MulticastDelegate).BaseType;
FieldDesc firstParameterField = delegateType.GetKnownField("m_firstParameter");
FieldDesc functionPointerField = delegateType.GetKnownField("m_functionPointer");
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emit.NewToken(firstParameterField.InstantiateAsOpen()));
for (int i = 0; i < method.Signature.Length; i++)
{
codeStream.EmitLdArg(i + 1);
}
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emit.NewToken(functionPointerField.InstantiateAsOpen()));
MethodSignature signature = method.Signature;
if (method.OwningType.HasInstantiation)
{
// If the owning type is generic, the signature will contain T's and U's.
// We need !0's and !1's.
TypeDesc[] typesToReplace = new TypeDesc[method.OwningType.Instantiation.Length];
TypeDesc[] replacementTypes = new TypeDesc[typesToReplace.Length];
for (int i = 0; i < typesToReplace.Length; i++)
{
typesToReplace[i] = method.OwningType.Instantiation[i];
replacementTypes[i] = context.GetSignatureVariable(i, method: false);
}
TypeDesc[] parameters = new TypeDesc[method.Signature.Length];
for (int i = 0; i < parameters.Length; i++)
{
parameters[i] = method.Signature[i].ReplaceTypesInConstructionOfType(typesToReplace, replacementTypes);
}
TypeDesc returnType = method.Signature.ReturnType.ReplaceTypesInConstructionOfType(typesToReplace, replacementTypes);
signature = new MethodSignature(signature.Flags, signature.GenericParameterCount, returnType, parameters);
}
codeStream.Emit(ILOpcode.calli, emit.NewToken(signature));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
return(null);
}
public static MethodIL EmitIL(MethodDesc method)
{
Debug.Assert(method.OwningType.IsDelegate);
Debug.Assert(method.OwningType.IsTypeDefinition);
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));
}
if (method.Name == "Invoke")
{
TypeSystemContext context = method.Context;
ILEmitter emit = new ILEmitter();
TypeDesc delegateType = context.GetWellKnownType(WellKnownType.MulticastDelegate).BaseType;
FieldDesc firstParameterField = delegateType.GetKnownField("m_firstParameter");
FieldDesc functionPointerField = delegateType.GetKnownField("m_functionPointer");
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emit.NewToken(firstParameterField.InstantiateAsOpen()));
for (int i = 0; i < method.Signature.Length; i++)
{
codeStream.EmitLdArg(i + 1);
}
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.ldfld, emit.NewToken(functionPointerField.InstantiateAsOpen()));
MethodSignature signature = method.Signature;
if (method.OwningType.HasInstantiation)
{
// If the owning type is generic, the signature will contain T's and U's.
// We need !0's and !1's.
TypeDesc[] typesToReplace = new TypeDesc[method.OwningType.Instantiation.Length];
TypeDesc[] replacementTypes = new TypeDesc[typesToReplace.Length];
for (int i = 0; i < typesToReplace.Length; i++)
{
typesToReplace[i] = method.OwningType.Instantiation[i];
replacementTypes[i] = context.GetSignatureVariable(i, method: false);
}
TypeDesc[] parameters = new TypeDesc[method.Signature.Length];
for (int i = 0; i < parameters.Length; i++)
{
parameters[i] = method.Signature[i].ReplaceTypesInConstructionOfType(typesToReplace, replacementTypes);
}
TypeDesc returnType = method.Signature.ReturnType.ReplaceTypesInConstructionOfType(typesToReplace, replacementTypes);
signature = new MethodSignature(signature.Flags, signature.GenericParameterCount, returnType, parameters);
}
codeStream.Emit(ILOpcode.calli, emit.NewToken(signature));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
return(null);
}
