public override MethodIL EmitIL()
{
ILEmitter emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
MetadataType startup = Context.GetHelperType("StartupCodeHelpers");
// Initialize command line args
string initArgsName = (Context.Target.OperatingSystem == TargetOS.Windows)
? "InitializeCommandLineArgsW"
: "InitializeCommandLineArgs";
MethodDesc initArgs = startup.GetKnownMethod(initArgsName, null);
codeStream.Emit(ILOpcode.ldarg_0); // argc
codeStream.Emit(ILOpcode.ldarg_1); // argv
codeStream.Emit(ILOpcode.call, emitter.NewToken(initArgs));
// Call program Main
if (_mainMethod.Signature.Length > 0)
{
codeStream.Emit(ILOpcode.call, emitter.NewToken(startup.GetKnownMethod("GetMainMethodArguments", null)));
}
codeStream.Emit(ILOpcode.call, emitter.NewToken(_mainMethod));
if (_mainMethod.Signature.ReturnType.IsVoid)
{
codeStream.EmitLdc(0);
}
codeStream.Emit(ILOpcode.ret);
return emitter.Link(this);
}
public static MethodIL EmitIL(MethodDesc target)
{
Debug.Assert(target.Name == "EETypePtrOf");
Debug.Assert(target.Signature.Length == 0
&& target.Signature.ReturnType == target.OwningType);
Debug.Assert(target.Instantiation.Length == 1);
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
TypeSystemContext context = target.Context;
TypeDesc runtimeTypeHandleType = context.GetWellKnownType(WellKnownType.RuntimeTypeHandle);
MethodDesc getValueInternalMethod = runtimeTypeHandleType.GetKnownMethod("GetValueInternal", null);
MethodDesc eetypePtrCtorMethod = context.SystemModule
.GetKnownType("System", "EETypePtr")
.GetKnownMethod(".ctor", new MethodSignature(0, 0, context.GetWellKnownType(WellKnownType.Void),
new TypeDesc[] { context.GetWellKnownType(WellKnownType.IntPtr) }));
// The sequence of these instructions is important. JIT is able to optimize out
// the LDTOKEN+GetValueInternal call into "load EEType pointer onto the evaluation stack".
codeStream.Emit(ILOpcode.ldtoken, emitter.NewToken(context.GetSignatureVariable(0, true)));
codeStream.Emit(ILOpcode.call, emitter.NewToken(getValueInternalMethod));
codeStream.Emit(ILOpcode.newobj, emitter.NewToken(eetypePtrCtorMethod));
codeStream.Emit(ILOpcode.ret);
return emitter.Link(target);
}
public static MethodIL EmitIL(MethodDesc target)
{
Debug.Assert(target.Name == "Call");
Debug.Assert(target.Signature.Length > 0
&& target.Signature[0] == target.Context.GetWellKnownType(WellKnownType.IntPtr));
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
// Load all the arguments except the first one (IntPtr address)
for (int i = 1; i < target.Signature.Length; i++)
{
codeStream.EmitLdArg(i);
}
// now load IntPtr address
codeStream.EmitLdArg(0);
// Create a signature for the calli by copying the signature of the containing method
// while skipping the first argument
MethodSignature template = target.Signature;
TypeDesc returnType = template.ReturnType;
TypeDesc[] parameters = new TypeDesc[template.Length - 1];
for (int i = 1; i < template.Length; i++)
{
parameters[i - 1] = template[i];
}
var signature = new MethodSignature(template.Flags, 0, returnType, parameters);
codeStream.Emit(ILOpcode.calli, emitter.NewToken(signature));
codeStream.Emit(ILOpcode.ret);
return emitter.Link();
}
public override MethodIL EmitIL()
{
ILEmitter emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
ModuleDesc developerExperience = Context.ResolveAssembly(new AssemblyName("System.Private.DeveloperExperience.Console"), false);
if (developerExperience != null)
{
TypeDesc connectorType = developerExperience.GetKnownType("Internal.DeveloperExperience", "DeveloperExperienceConnectorConsole");
MethodDesc initializeMethod = connectorType.GetKnownMethod("Initialize", null);
codeStream.Emit(ILOpcode.call, emitter.NewToken(initializeMethod));
}
MetadataType startup = Context.GetHelperType("StartupCodeHelpers");
// Initialize command line args if the class library supports this
string initArgsName = (Context.Target.OperatingSystem == TargetOS.Windows)
? "InitializeCommandLineArgsW"
: "InitializeCommandLineArgs";
MethodDesc initArgs = startup.GetMethod(initArgsName, null);
if (initArgs != null)
{
codeStream.Emit(ILOpcode.ldarg_0); // argc
codeStream.Emit(ILOpcode.ldarg_1); // argv
codeStream.Emit(ILOpcode.call, emitter.NewToken(initArgs));
}
// Call program Main
if (_mainMethod.Signature.Length > 0)
{
// TODO: better exception
if (initArgs == null)
throw new Exception("Main() has parameters, but the class library doesn't support them");
codeStream.Emit(ILOpcode.call, emitter.NewToken(startup.GetKnownMethod("GetMainMethodArguments", null)));
}
codeStream.Emit(ILOpcode.call, emitter.NewToken(_mainMethod));
if (_mainMethod.Signature.ReturnType.IsVoid)
{
codeStream.EmitLdc(0);
}
codeStream.Emit(ILOpcode.ret);
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;
}
private static MethodIL EmitSizeOf(MethodDesc method)
{
Debug.Assert(method.Signature.IsStatic && method.Signature.Length == 0);
TypeSystemContext context = method.Context;
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.Emit(ILOpcode.sizeof_, emit.NewToken(context.GetSignatureVariable(0, method: true)));
codeStream.Emit(ILOpcode.ret);
return emit.Link(method);
}
public static MethodIL EmitIL(MethodDesc target)
{
Debug.Assert(target.Name == "Call");
Debug.Assert(target.Signature.Length > 0
&& target.Signature[0] == target.Context.GetWellKnownType(WellKnownType.IntPtr));
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
// Load all the arguments except the first one (IntPtr address)
for (int i = 1; i < target.Signature.Length; i++)
{
codeStream.EmitLdArg(i);
}
// now load IntPtr address
codeStream.EmitLdArg(0);
// Create a signature for the calli by copying the signature of the containing method
// while skipping the first argument
MethodSignature template = target.Signature;
TypeDesc returnType = template.ReturnType;
TypeDesc[] parameters = new TypeDesc[template.Length - 1];
for (int i = 1; i < template.Length; i++)
{
parameters[i - 1] = template[i];
}
var signature = new MethodSignature(template.Flags, 0, returnType, parameters);
bool useTransformedCalli = true;
if ((signature.Flags & MethodSignatureFlags.UnmanagedCallingConventionMask) != 0)
{
// Fat function pointer only ever exist for managed targets.
useTransformedCalli = false;
}
if (((MetadataType)target.OwningType).Name == "RawCalliHelper")
{
// RawCalliHelper doesn't need the transform.
useTransformedCalli = false;
}
if (useTransformedCalli)
EmitTransformedCalli(emitter, codeStream, signature);
else
codeStream.Emit(ILOpcode.calli, emitter.NewToken(signature));
codeStream.Emit(ILOpcode.ret);
return emitter.Link(target);
}
public static MethodIL EmitIL(MethodDesc target)
{
Debug.Assert(target.Name == "CreateInstanceIntrinsic");
Debug.Assert(target.Instantiation.Length == 1);
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
// TODO: This won't work for shared generics
// https://github.com/dotnet/corert/issues/368
TypeDesc type = target.Instantiation[0];
MethodDesc ctorMethod = type.GetDefaultConstructor();
if (ctorMethod == null)
{
if (type.IsValueType)
{
var loc = emitter.NewLocal(type);
codeStream.EmitLdLoca(loc);
codeStream.Emit(ILOpcode.initobj, emitter.NewToken(type));
codeStream.EmitLdLoc(loc);
}
else
{
var missingCtor = type.Context.SystemModule.GetKnownType("System", "Activator").
GetNestedType("ClassWithMissingConstructor").GetDefaultConstructor();
codeStream.Emit(ILOpcode.newobj, emitter.NewToken(missingCtor));
}
}
else
{
codeStream.Emit(ILOpcode.newobj, emitter.NewToken(ctorMethod));
}
codeStream.Emit(ILOpcode.ret);
return emitter.Link(target);
}
public override MethodIL EmitIL()
{
ILEmitter emitter = new ILEmitter();
ILCodeStream codeStream = emitter.NewCodeStream();
ILLocalVariable returnValue = emitter.NewLocal(Context.GetWellKnownType(WellKnownType.Int32));
TypeDesc startup = Context.SystemModule.GetType("Internal.Runtime.CompilerHelpers", "StartupCodeHelpers");
codeStream.Emit(ILOpcode.call, emitter.NewToken(startup.GetMethod("Initialize", null)));
// Initialize command line args
// TODO: For Windows change to "InitializeCommandLineArgsW" with wmain wchar_t change.
string initArgsName = (Context.Target.OperatingSystem == TargetOS.Windows)
? "InitializeCommandLineArgs"
: "InitializeCommandLineArgs";
MethodDesc initArgs = startup.GetMethod(initArgsName, null);
codeStream.Emit(ILOpcode.ldarg_0); // argc
codeStream.Emit(ILOpcode.ldarg_1); // argv
codeStream.Emit(ILOpcode.call, emitter.NewToken(initArgs));
// Call program Main
if (_mainMethod.Signature.Length > 0)
{
TypeDesc environ = Context.SystemModule.GetType("System", "Environment");
codeStream.Emit(ILOpcode.call, emitter.NewToken(environ.GetMethod("GetCommandLineArgs", null)));
}
codeStream.Emit(ILOpcode.call, emitter.NewToken(_mainMethod));
if (_mainMethod.Signature.ReturnType.IsVoid)
{
codeStream.EmitLdc(0);
}
codeStream.EmitStLoc(returnValue);
codeStream.Emit(ILOpcode.call, emitter.NewToken(startup.GetMethod("Shutdown", null)));
codeStream.EmitLdLoc(returnValue);
codeStream.Emit(ILOpcode.ret);
return emitter.Link();
}
private ArrayMethodILEmitter(ArrayMethod method)
{
_method = method;
ArrayType arrayType = (ArrayType)method.OwningType;
_rank = arrayType.Rank;
_elementType = arrayType.ElementType;
_emitter = new ILEmitter();
// This helper field is needed to generate proper GC tracking. There is no direct way
// to create interior pointer.
_helperFieldToken = _emitter.NewToken(_method.Context.GetWellKnownType(WellKnownType.Object).GetField("m_pEEType"));
}
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 ArrayMethodILEmitter(ArrayMethod method)
{
_method = method;
ArrayType arrayType = (ArrayType)method.OwningType;
_rank = arrayType.Rank;
_elementType = arrayType.ElementType;
_emitter = new ILEmitter();
// This helper field is needed to generate proper GC tracking. There is no direct way
// to create interior pointer.
_helperFieldToken = _emitter.NewToken(_method.Context.GetWellKnownType(WellKnownType.Object).GetKnownField("m_pEEType"));
}
/// <summary>
/// Emits a call to a throw helper. Use this to emit calls to static parameterless methods that don't return.
/// The advantage of using this extension method is that you don't have to deal with what code to emit after
/// the call (e.g. do you need to make sure the stack is balanced?).
/// </summary>
public static void EmitCallThrowHelper(this ILCodeStream codeStream, ILEmitter emitter, MethodDesc method)
{
Debug.Assert(method.Signature.Length == 0 && method.Signature.IsStatic);
// Emit a call followed by a branch to the call.
// We are emitting this instead of emitting a tight loop that jumps to itself
// so that the JIT doesn't generate extra GC checks within the loop.
ILCodeLabel label = emitter.NewCodeLabel();
codeStream.EmitLabel(label);
codeStream.Emit(ILOpcode.call, emitter.NewToken(method));
codeStream.Emit(ILOpcode.br, label);
}
public static MethodIL EmitIL(MethodDesc target)
{
Debug.Assert(target.Name == "CompareExchange" || target.Name == "Exchange");
//
// Find non-generic method to forward the generic method to.
//
int parameterCount = target.Signature.Length;
Debug.Assert(parameterCount == 3 || parameterCount == 2);
var objectType = target.Context.GetWellKnownType(WellKnownType.Object);
var parameters = new TypeDesc[parameterCount];
parameters[0] = objectType.MakeByRefType();
for (int i = 1; i < parameters.Length; i++)
{
parameters[i] = objectType;
}
MethodSignature nonGenericSignature = new MethodSignature(MethodSignatureFlags.Static, 0, objectType, parameters);
MethodDesc nonGenericMethod = target.OwningType.GetMethod(target.Name, nonGenericSignature);
// TODO: Better exception type. Should be: "CoreLib doesn't have a required thing in it".
if (nonGenericMethod == null)
{
throw new NotImplementedException();
}
//
// Emit the forwarder
//
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
// Reload all arguments
for (int i = 0; i < parameterCount; i++)
{
codeStream.EmitLdArg(i);
}
codeStream.Emit(ILOpcode.call, emitter.NewToken(nonGenericMethod));
codeStream.Emit(ILOpcode.ret);
return(emitter.Link());
}
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));
EmitTransformedCalli(emitter, codeStream, targetMethodSignature);
//codeStream.Emit(ILOpcode.calli, emitter.NewToken(targetMethodSignature));
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
public override MethodIL EmitIL()
{
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
ILCodeLabel returnNullLabel = emitter.NewCodeLabel();
ILCodeLabel[] labels = new ILCodeLabel[(int)DelegateThunkCollection.MaxThunkKind];
for (DelegateThunkKind i = 0; i < DelegateThunkCollection.MaxThunkKind; i++)
{
MethodDesc thunk = _delegateInfo.Thunks[i];
if (thunk != null)
{
labels[(int)i] = emitter.NewCodeLabel();
}
else
{
labels[(int)i] = returnNullLabel;
}
}
codeStream.EmitLdArg(1);
codeStream.EmitSwitch(labels);
codeStream.Emit(ILOpcode.br, returnNullLabel);
for (DelegateThunkKind i = 0; i < DelegateThunkCollection.MaxThunkKind; i++)
{
MethodDesc thunk = _delegateInfo.Thunks[i];
if (thunk == null)
{
continue;
}
MethodDesc targetMethod = thunk.InstantiateAsOpen();
codeStream.EmitLabel(labels[(int)i]);
codeStream.Emit(ILOpcode.ldftn, emitter.NewToken(targetMethod));
codeStream.Emit(ILOpcode.ret);
}
codeStream.EmitLabel(returnNullLabel);
codeStream.EmitLdc(0);
codeStream.Emit(ILOpcode.conv_i);
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
private static MethodIL EmitUnbox(MethodDesc method)
{
Debug.Assert(method.Signature.IsStatic && method.Signature.Length == 1);
TypeSystemContext context = method.Context;
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.unbox, emit.NewToken(context.GetSignatureVariable(0, method: true)));
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
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()
{
const DelegateThunkKind maxThunkKind = DelegateThunkKind.ObjectArrayThunk;
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
ILCodeLabel returnNullLabel = emitter.NewCodeLabel();
ILCodeLabel[] labels = new ILCodeLabel[(int)maxThunkKind];
for (DelegateThunkKind i = 0; i < maxThunkKind; i++)
{
MethodDesc thunk = _delegateInfo.Thunks[i];
if (thunk != null)
{
labels[(int)i] = emitter.NewCodeLabel();
}
else
{
labels[(int)i] = returnNullLabel;
}
}
codeStream.EmitLdArg(1);
codeStream.EmitSwitch(labels);
codeStream.Emit(ILOpcode.br, returnNullLabel);
for (DelegateThunkKind i = 0; i < maxThunkKind; i++)
{
MethodDesc thunk = _delegateInfo.Thunks[i];
if (thunk != null)
{
codeStream.EmitLabel(labels[(int)i]);
codeStream.Emit(ILOpcode.ldftn, emitter.NewToken(thunk.InstantiateAsOpen()));
codeStream.Emit(ILOpcode.ret);
}
}
codeStream.EmitLabel(returnNullLabel);
codeStream.EmitLdc(0);
codeStream.Emit(ILOpcode.conv_i);
codeStream.Emit(ILOpcode.ret);
return(emitter.Link());
}
private ArrayMethodILEmitter(ArrayMethod method)
{
Debug.Assert(method.Kind != ArrayMethodKind.Address, "Should be " + nameof(ArrayMethodKind.AddressWithHiddenArg));
_method = method;
ArrayType arrayType = (ArrayType)method.OwningType;
_rank = arrayType.Rank;
_elementType = arrayType.ElementType;
_emitter = new ILEmitter();
// This helper field is needed to generate proper GC tracking. There is no direct way
// to create interior pointer.
_helperFieldToken = _emitter.NewToken(_method.Context.GetWellKnownType(WellKnownType.Object).GetKnownField("m_pEEType"));
}
public override MethodIL EmitIL()
{
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
for (int i = 0; i < Signature.Length; i++)
{
codeStream.EmitLdArg(i + 1);
}
codeStream.Emit(ILOpcode.call, emitter.NewToken(_target));
codeStream.Emit(ILOpcode.ret);
return(emitter.Link());
}
public override MethodIL EmitIL()
{
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
for (int i = 0; i < Signature.Length; i++)
{
codeStream.EmitLdArg(i + 1);
}
codeStream.Emit(ILOpcode.call, emitter.NewToken(_target));
codeStream.Emit(ILOpcode.ret);
return emitter.Link();
}
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 static MethodIL EmitAdd(MethodDesc method)
{
Debug.Assert(method.Signature.IsStatic && method.Signature.Length == 2);
TypeSystemContext context = method.Context;
ILEmitter emit = new ILEmitter();
ILCodeStream codeStream = emit.NewCodeStream();
codeStream.Emit(ILOpcode.ldarg_1);
codeStream.Emit(ILOpcode.sizeof_, emit.NewToken(context.GetSignatureVariable(0, method: true)));
codeStream.Emit(ILOpcode.conv_i);
codeStream.Emit(ILOpcode.mul);
codeStream.Emit(ILOpcode.ldarg_0);
codeStream.Emit(ILOpcode.add);
codeStream.Emit(ILOpcode.ret);
return(emit.Link(method));
}
public static MethodIL EmitIL(MethodDesc target)
{
Debug.Assert(target.Name == "AddrOf");
Debug.Assert(target.Signature.Length == 1
&& target.Signature.ReturnType == target.Context.GetWellKnownType(WellKnownType.IntPtr));
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
codeStream.EmitLdArg(0);
var fptrField = target.Context.GetWellKnownType(WellKnownType.MulticastDelegate).BaseType.GetKnownField("m_extraFunctionPointerOrData");
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(fptrField));
codeStream.Emit(ILOpcode.ret);
return emitter.Link();
}
public static MethodIL EmitIL(MethodDesc target)
{
Debug.Assert(target.Name == "Call" || target.Name == "StdCall");
Debug.Assert(target.Signature.Length > 0 &&
target.Signature[0] == target.Context.GetWellKnownType(WellKnownType.IntPtr));
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
// Load all the arguments except the first one (IntPtr address)
for (int i = 1; i < target.Signature.Length; i++)
{
codeStream.EmitLdArg(i);
}
// now load IntPtr address
codeStream.EmitLdArg(0);
// Create a signature for the calli by copying the signature of the containing method
// while skipping the first argument
MethodSignature template = target.Signature;
TypeDesc returnType = template.ReturnType;
TypeDesc[] parameters = new TypeDesc[template.Length - 1];
for (int i = 1; i < template.Length; i++)
{
parameters[i - 1] = template[i];
}
MethodSignatureFlags flags = template.Flags;
if (target.Name == "StdCall")
{
flags |= MethodSignatureFlags.UnmanagedCallingConventionStdCall;
}
var signature = new MethodSignature(flags, 0, returnType, parameters);
codeStream.Emit(ILOpcode.calli, emitter.NewToken(signature));
codeStream.Emit(ILOpcode.ret);
return(emitter.Link(target));
}
public static MethodIL EmitIL(MethodDesc target)
{
Debug.Assert(target.Name == "AddrOf");
Debug.Assert(target.Signature.Length == 1 &&
target.Signature.ReturnType == target.Context.GetWellKnownType(WellKnownType.IntPtr));
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
codeStream.EmitLdArg(0);
var fptrField = target.Context.GetWellKnownType(WellKnownType.MulticastDelegate).BaseType.GetKnownField("m_extraFunctionPointerOrData");
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(fptrField));
codeStream.Emit(ILOpcode.ret);
return(emitter.Link());
}
public static MethodIL EmitIL(MethodDesc target)
{
Debug.Assert(target.Name == "CompareExchange" || target.Name == "Exchange");
//
// Find non-generic method to forward the generic method to.
//
int parameterCount = target.Signature.Length;
Debug.Assert(parameterCount == 3 || parameterCount == 2);
var objectType = target.Context.GetWellKnownType(WellKnownType.Object);
var parameters = new TypeDesc[parameterCount];
parameters[0] = objectType.MakeByRefType();
for (int i = 1; i < parameters.Length; i++)
parameters[i] = objectType;
MethodSignature nonGenericSignature = new MethodSignature(MethodSignatureFlags.Static, 0, objectType, parameters);
MethodDesc nonGenericMethod = target.OwningType.GetMethod(target.Name, nonGenericSignature);
// TODO: Better exception type. Should be: "CoreLib doesn't have a required thing in it".
if (nonGenericMethod == null)
throw new NotImplementedException();
//
// Emit the forwarder
//
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
// Reload all arguments
for (int i = 0; i < parameterCount; i++)
codeStream.EmitLdArg(i);
codeStream.Emit(ILOpcode.call, emitter.NewToken(nonGenericMethod));
codeStream.Emit(ILOpcode.ret);
return emitter.Link();
}
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 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);
}
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 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 EmitPInvokeCall(PInvokeILCodeStreams ilCodeStreams)
{
ILEmitter emitter = ilCodeStreams.Emitter;
ILCodeStream callsiteSetupCodeStream = ilCodeStreams.CallsiteSetupCodeStream;
TypeSystemContext context = _targetMethod.Context;
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(
_targetMethod.Signature.Flags, 0, nativeReturnType,
nativeParameterTypes);
var rawTargetMethod = new PInvokeTargetNativeMethod(_targetMethod, nativeSig);
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(rawTargetMethod));
}
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));
}
public static MethodIL EmitIL(MethodDesc target)
{
Debug.Assert(target.Name == "AddrOf");
Debug.Assert(target.Signature.Length == 1
&& target.Signature.ReturnType == target.Context.GetWellKnownType(WellKnownType.IntPtr));
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
codeStream.EmitLdArg(0);
var fptrField = target.Context.GetWellKnownType(WellKnownType.MulticastDelegate).BaseType.GetField("m_extraFunctionPointerOrData");
if (fptrField == null)
{
// TODO: Better exception type. Should be: "CoreLib doesn't have a required thing in it".
throw new NotImplementedException();
}
codeStream.Emit(ILOpcode.ldfld, emitter.NewToken(fptrField));
codeStream.Emit(ILOpcode.ret);
return emitter.Link();
}
private void EmitILForAccessor()
{
Debug.Assert(_method.OwningType.IsMdArray);
var codeStream = _emitter.NewCodeStream();
var context = _method.Context;
var int32Type = context.GetWellKnownType(WellKnownType.Int32);
var totalLocalNum = _emitter.NewLocal(int32Type);
var lengthLocalNum = _emitter.NewLocal(int32Type);
int pointerSize = context.Target.PointerSize;
int argStartOffset = _method.Kind == ArrayMethodKind.AddressWithHiddenArg ? 2 : 1;
var rangeExceptionLabel = _emitter.NewCodeLabel();
ILCodeLabel typeMismatchExceptionLabel = null;
if (!_elementType.IsValueType)
{
// Type check
if (_method.Kind == ArrayMethodKind.Set)
{
MethodDesc checkArrayStore =
context.SystemModule.GetKnownType("System.Runtime", "RuntimeImports").GetKnownMethod("RhCheckArrayStore", null);
codeStream.EmitLdArg(0);
codeStream.EmitLdArg(_rank + argStartOffset);
codeStream.Emit(ILOpcode.call, _emitter.NewToken(checkArrayStore));
}
else if (_method.Kind == ArrayMethodKind.AddressWithHiddenArg)
{
TypeDesc objectType = context.GetWellKnownType(WellKnownType.Object);
TypeDesc eetypePtrType = context.SystemModule.GetKnownType("System", "EETypePtr");
typeMismatchExceptionLabel = _emitter.NewCodeLabel();
ILLocalVariable thisEEType = _emitter.NewLocal(eetypePtrType);
// EETypePtr actualElementType = this.EETypePtr.ArrayElementType;
codeStream.EmitLdArg(0);
codeStream.Emit(ILOpcode.call, _emitter.NewToken(objectType.GetKnownMethod("get_EETypePtr", null)));
codeStream.EmitStLoc(thisEEType);
codeStream.EmitLdLoca(thisEEType);
codeStream.Emit(ILOpcode.call,
_emitter.NewToken(eetypePtrType.GetKnownMethod("get_ArrayElementType", null)));
// EETypePtr expectedElementType = hiddenArg.ArrayElementType;
codeStream.EmitLdArga(1);
codeStream.Emit(ILOpcode.call,
_emitter.NewToken(eetypePtrType.GetKnownMethod("get_ArrayElementType", null)));
// if (expectedElementType != actualElementType)
// ThrowHelpers.ThrowArrayTypeMismatchException();
codeStream.Emit(ILOpcode.call, _emitter.NewToken(eetypePtrType.GetKnownMethod("op_Equality", null)));
codeStream.Emit(ILOpcode.brfalse, typeMismatchExceptionLabel);
}
}
for (int i = 0; i < _rank; i++)
{
// The first two fields are EEType pointer and total length. Lengths for each dimension follows.
int lengthOffset = (2 * pointerSize + i * sizeof(int));
EmitLoadInteriorAddress(codeStream, lengthOffset);
codeStream.Emit(ILOpcode.ldind_i4);
codeStream.EmitStLoc(lengthLocalNum);
codeStream.EmitLdArg(i + argStartOffset);
// Compare with length
codeStream.Emit(ILOpcode.dup);
codeStream.EmitLdLoc(lengthLocalNum);
codeStream.Emit(ILOpcode.bge_un, rangeExceptionLabel);
// Add to the running total if we have one already
if (i > 0)
{
codeStream.EmitLdLoc(totalLocalNum);
codeStream.EmitLdLoc(lengthLocalNum);
codeStream.Emit(ILOpcode.mul);
codeStream.Emit(ILOpcode.add);
}
codeStream.EmitStLoc(totalLocalNum);
}
// Compute element offset
// TODO: This leaves unused space for lower bounds to match CoreCLR...
int firstElementOffset = (2 * pointerSize + 2 * _rank * sizeof(int));
EmitLoadInteriorAddress(codeStream, firstElementOffset);
codeStream.EmitLdLoc(totalLocalNum);
int elementSize = _elementType.GetElementSize().AsInt;
if (elementSize != 1)
{
codeStream.EmitLdc(elementSize);
codeStream.Emit(ILOpcode.mul);
}
codeStream.Emit(ILOpcode.add);
switch (_method.Kind)
{
case ArrayMethodKind.Get:
codeStream.Emit(ILOpcode.ldobj, _emitter.NewToken(_elementType));
break;
case ArrayMethodKind.Set:
codeStream.EmitLdArg(_rank + argStartOffset);
codeStream.Emit(ILOpcode.stobj, _emitter.NewToken(_elementType));
break;
case ArrayMethodKind.AddressWithHiddenArg:
break;
}
codeStream.Emit(ILOpcode.ret);
codeStream.EmitLdc(0);
codeStream.EmitLabel(rangeExceptionLabel); // Assumes that there is one "int" pushed on the stack
codeStream.Emit(ILOpcode.pop);
MethodDesc throwHelper = context.GetHelperEntryPoint("ThrowHelpers", "ThrowIndexOutOfRangeException");
codeStream.EmitCallThrowHelper(_emitter, throwHelper);
if (typeMismatchExceptionLabel != null)
{
codeStream.EmitLabel(typeMismatchExceptionLabel);
codeStream.EmitCallThrowHelper(_emitter, context.GetHelperEntryPoint("ThrowHelpers", "ThrowArrayTypeMismatchException"));
}
}
public static MethodIL EmitIL(MethodDesc methodThatShouldThrow, TypeSystemException exception)
{
TypeSystemContext context = methodThatShouldThrow.Context;
MethodDesc helper;
Type exceptionType = exception.GetType();
if (exceptionType == typeof(TypeSystemException.TypeLoadException))
{
//
// There are two ThrowTypeLoadException helpers. Find the one which matches the number of
// arguments "exception" was initialized with.
//
helper = context.GetHelperEntryPoint("ThrowHelpers", "ThrowTypeLoadException");
if (helper.Signature.Length != exception.Arguments.Count + 1)
{
helper = context.GetHelperEntryPoint("ThrowHelpers", "ThrowTypeLoadExceptionWithArgument");
}
}
else if (exceptionType == typeof(TypeSystemException.MissingFieldException))
{
helper = context.GetHelperEntryPoint("ThrowHelpers", "ThrowMissingFieldException");
}
else if (exceptionType == typeof(TypeSystemException.MissingMethodException))
{
helper = context.GetHelperEntryPoint("ThrowHelpers", "ThrowMissingMethodException");
}
else if (exceptionType == typeof(TypeSystemException.FileNotFoundException))
{
helper = context.GetHelperEntryPoint("ThrowHelpers", "ThrowFileNotFoundException");
}
else if (exceptionType == typeof(TypeSystemException.InvalidProgramException))
{
helper = context.GetHelperEntryPoint("ThrowHelpers", "ThrowInvalidProgramException");
}
else
{
throw new NotImplementedException();
}
Debug.Assert(helper.Signature.Length == exception.Arguments.Count + 1);
var emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
var infinityLabel = emitter.NewCodeLabel();
codeStream.EmitLabel(infinityLabel);
codeStream.EmitLdc((int)exception.StringID);
foreach (var arg in exception.Arguments)
{
codeStream.Emit(ILOpcode.ldstr, emitter.NewToken(arg));
}
codeStream.Emit(ILOpcode.call, emitter.NewToken(helper));
// The call will never return, but we still need to emit something. Emit a jump so that
// we don't have to bother balancing the stack if the method returns something.
codeStream.Emit(ILOpcode.br, infinityLabel);
return emitter.Link(methodThatShouldThrow);
}
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 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));
CalliIntrinsic.EmitTransformedCalli(emitter, codeStream, Signature);
//codeStream.Emit(ILOpcode.calli, emitter.NewToken(Signature));
codeStream.Emit(ILOpcode.ret);
return emitter.Link(this);
}
private MethodIL EmitIL()
{
PInvokeILCodeStreams pInvokeILCodeStreams = new PInvokeILCodeStreams();
ILEmitter emitter = pInvokeILCodeStreams.Emitter;
ILCodeStream fnptrLoadStream = pInvokeILCodeStreams.FunctionPointerLoadStream;
ILCodeStream callsiteSetupCodeStream = pInvokeILCodeStreams.CallsiteSetupCodeStream;
ILCodeStream unmarshallingCodestream = pInvokeILCodeStreams.UnmarshallingCodestream;
TypeSystemContext context = _targetMethod.Context;
// Marshal the arguments
for (int i = 0; i < _marshallers.Length; i++)
{
_marshallers[i].EmitMarshallingIL(pInvokeILCodeStreams);
}
// if the SetLastError flag is set in DllImport, clear the error code before doing P/Invoke
if (_importMetadata.Flags.SetLastError)
{
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(
InteropTypes.GetPInvokeMarshal(context).GetKnownMethod("ClearLastWin32Error", null)));
}
// make the call
DelegateMarshallingMethodThunk delegateMethod = _targetMethod as DelegateMarshallingMethodThunk;
if (delegateMethod != null)
{
EmitDelegateCall(delegateMethod, pInvokeILCodeStreams);
}
else
{
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;
}
if (MarshalHelpers.UseLazyResolution(_targetMethod,
_importMetadata.Module,
_pInvokeILEmitterConfiguration))
{
MetadataType lazyHelperType = _targetMethod.Context.GetHelperType("InteropHelpers");
FieldDesc lazyDispatchCell = new PInvokeLazyFixupField(_targetMethod);
fnptrLoadStream.Emit(ILOpcode.ldsflda, emitter.NewToken(lazyDispatchCell));
fnptrLoadStream.Emit(ILOpcode.call, emitter.NewToken(lazyHelperType
.GetKnownMethod("ResolvePInvoke", null)));
MethodSignatureFlags unmanagedCallConv = _importMetadata.Flags.UnmanagedCallingConvention;
MethodSignature nativeSig = new MethodSignature(
_targetMethod.Signature.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(nativeSig));
}
else
{
// Eager call
MethodSignature nativeSig = new MethodSignature(
_targetMethod.Signature.Flags, 0, nativeReturnType, nativeParameterTypes);
MethodDesc nativeMethod =
new PInvokeTargetNativeMethod(_targetMethod, nativeSig);
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(nativeMethod));
}
}
// if the SetLastError flag is set in DllImport, call the PInvokeMarshal.
// SaveLastWin32Error so that last error can be used later by calling
// PInvokeMarshal.GetLastWin32Error
if (_importMetadata.Flags.SetLastError)
{
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(
InteropTypes.GetPInvokeMarshal(context)
.GetKnownMethod("SaveLastWin32Error", null)));
}
unmarshallingCodestream.Emit(ILOpcode.ret);
return(new PInvokeILStubMethodIL((ILStubMethodIL)emitter.Link(_targetMethod),
IsStubRequired()));
}
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 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());
}
private void EmitPInvokeCall(PInvokeILCodeStreams ilCodeStreams)
{
ILEmitter emitter = ilCodeStreams.Emitter;
ILCodeStream fnptrLoadStream = ilCodeStreams.FunctionPointerLoadStream;
ILCodeStream callsiteSetupCodeStream = ilCodeStreams.CallsiteSetupCodeStream;
TypeSystemContext context = _targetMethod.Context;
bool isHRSwappedRetVal = !_flags.PreserveSig && !_targetMethod.Signature.ReturnType.IsVoid;
TypeDesc nativeReturnType = _flags.PreserveSig ? _marshallers[0].NativeParameterType : context.GetWellKnownType(WellKnownType.Int32);
TypeDesc[] nativeParameterTypes = new TypeDesc[isHRSwappedRetVal ? _marshallers.Length : _marshallers.Length - 1];
// if the SetLastError flag is set in DllImport, clear the error code before doing P/Invoke
if (_flags.SetLastError)
{
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(
InteropTypes.GetPInvokeMarshal(context).GetKnownMethod("ClearLastError", null)));
}
for (int i = 1; i < _marshallers.Length; i++)
{
nativeParameterTypes[i - 1] = _marshallers[i].NativeParameterType;
}
if (isHRSwappedRetVal)
{
nativeParameterTypes[_marshallers.Length - 1] = _marshallers[0].NativeParameterType;
}
if (!_pInvokeILEmitterConfiguration.GenerateDirectCall(_targetMethod, out _))
{
MetadataType lazyHelperType = context.GetHelperType("InteropHelpers");
FieldDesc lazyDispatchCell = _interopStateManager.GetPInvokeLazyFixupField(_targetMethod);
fnptrLoadStream.Emit(ILOpcode.ldsflda, emitter.NewToken(lazyDispatchCell));
fnptrLoadStream.Emit(ILOpcode.call, emitter.NewToken(lazyHelperType
.GetKnownMethod("ResolvePInvoke", null)));
MethodSignatureFlags unmanagedCallingConvention = _flags.UnmanagedCallingConvention;
if (unmanagedCallingConvention == MethodSignatureFlags.None)
{
unmanagedCallingConvention = MethodSignatureFlags.UnmanagedCallingConvention;
}
EmbeddedSignatureData[] embeddedSignatureData = null;
if (_targetMethod.HasCustomAttribute("System.Runtime.InteropServices", "SuppressGCTransitionAttribute"))
{
embeddedSignatureData = new EmbeddedSignatureData[]
{
new EmbeddedSignatureData()
{
index = MethodSignature.IndexOfCustomModifiersOnReturnType,
kind = EmbeddedSignatureDataKind.OptionalCustomModifier,
type = context.SystemModule.GetKnownType("System.Runtime.CompilerServices", "CallConvSuppressGCTransition")
}
};
}
MethodSignature nativeSig = new MethodSignature(
_targetMethod.Signature.Flags | unmanagedCallingConvention, 0, nativeReturnType,
nativeParameterTypes, embeddedSignatureData);
ILLocalVariable vNativeFunctionPointer = emitter.NewLocal(context
.GetWellKnownType(WellKnownType.IntPtr));
fnptrLoadStream.EmitStLoc(vNativeFunctionPointer);
callsiteSetupCodeStream.EmitLdLoc(vNativeFunctionPointer);
callsiteSetupCodeStream.Emit(ILOpcode.calli, emitter.NewToken(nativeSig));
}
else
{
// Eager call
MethodSignature nativeSig = new MethodSignature(
_targetMethod.Signature.Flags, 0, nativeReturnType, nativeParameterTypes);
MethodDesc nativeMethod =
new PInvokeTargetNativeMethod(_targetMethod, nativeSig);
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(nativeMethod));
}
if (!_flags.PreserveSig)
{
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(
InteropTypes.GetMarshal(context)
.GetKnownMethod("ThrowExceptionForHR", null)));
}
// if the SetLastError flag is set in DllImport, call the PInvokeMarshal.SaveLastError
// so that last error can be used later by calling Marshal.GetLastPInvokeError
if (_flags.SetLastError)
{
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(
InteropTypes.GetPInvokeMarshal(context)
.GetKnownMethod("SaveLastError", null)));
}
}
/// <summary>
/// Generates a calli sequence that is aware of fat function pointers and can unwrap them into
/// a function pointer + instantiation argument if necessary.
/// </summary>
public static void EmitTransformedCalli(ILEmitter emitter, ILCodeStream codestream, MethodSignature targetSignature)
{
TypeSystemContext context = targetSignature.ReturnType.Context;
int thisPointerParamDelta = 0;
if (!targetSignature.IsStatic)
thisPointerParamDelta = 1;
// Start by saving the pointer to call and all the args into locals
ILLocalVariable vPointerToCall = emitter.NewLocal(context.GetWellKnownType(WellKnownType.IntPtr));
codestream.EmitStLoc(vPointerToCall);
ILLocalVariable[] vParameters = new ILLocalVariable[targetSignature.Length + thisPointerParamDelta];
for (int i = thisPointerParamDelta; i < vParameters.Length; i++)
{
vParameters[vParameters.Length - i - 1 + thisPointerParamDelta] = emitter.NewLocal(targetSignature[targetSignature.Length - (i - thisPointerParamDelta) - 1]);
codestream.EmitStLoc(vParameters[vParameters.Length - i - 1 + thisPointerParamDelta]);
}
if (!targetSignature.IsStatic)
{
vParameters[0] = emitter.NewLocal(context.GetWellKnownType(WellKnownType.Object));
codestream.EmitStLoc(vParameters[0]);
}
// Is this a fat pointer?
codestream.EmitLdLoc(vPointerToCall);
Debug.Assert(((FatFunctionPointerConstants.Offset - 1) & FatFunctionPointerConstants.Offset) == 0);
codestream.EmitLdc(FatFunctionPointerConstants.Offset);
codestream.Emit(ILOpcode.and);
ILCodeLabel notAFatPointer = emitter.NewCodeLabel();
codestream.Emit(ILOpcode.brfalse, notAFatPointer);
//
// Fat pointer case
//
codestream.EmitLdLoc(vPointerToCall);
codestream.EmitLdc(FatFunctionPointerConstants.Offset);
codestream.Emit(ILOpcode.sub);
// Get the pointer to call from the fat pointer
codestream.Emit(ILOpcode.dup);
codestream.Emit(ILOpcode.ldind_i);
codestream.EmitStLoc(vPointerToCall);
// Get the instantiation argument
codestream.EmitLdc(context.Target.PointerSize);
codestream.Emit(ILOpcode.add);
codestream.Emit(ILOpcode.ldind_i);
codestream.Emit(ILOpcode.ldind_i);
ILLocalVariable instArg = emitter.NewLocal(context.GetWellKnownType(WellKnownType.IntPtr));
codestream.EmitStLoc(instArg);
// Load this
int firstRealParameter = 0;
if (!targetSignature.IsStatic)
{
codestream.EmitLdLoc(vParameters[0]);
firstRealParameter = 1;
}
// Load hidden arg
codestream.EmitLdLoc(instArg);
// Load rest of args
for (int i = firstRealParameter; i < vParameters.Length; i++)
{
codestream.EmitLdLoc(vParameters[i]);
}
codestream.EmitLdLoc(vPointerToCall);
// The signature has a hidden argument
TypeDesc[] newParameters = new TypeDesc[targetSignature.Length + 1];
for (int i = 0; i < targetSignature.Length; i++)
newParameters[i + 1] = targetSignature[i];
newParameters[0] = context.GetWellKnownType(WellKnownType.IntPtr);
MethodSignature newMethodSignature = new MethodSignature(targetSignature.Flags,
targetSignature.GenericParameterCount, targetSignature.ReturnType, newParameters);
codestream.Emit(ILOpcode.calli, emitter.NewToken(newMethodSignature));
ILCodeLabel done = emitter.NewCodeLabel();
codestream.Emit(ILOpcode.br, done);
//
// Not a fat pointer case
//
codestream.EmitLabel(notAFatPointer);
for (int i = 0; i < vParameters.Length; i++)
{
codestream.EmitLdLoc(vParameters[i]);
}
codestream.EmitLdLoc(vPointerToCall);
codestream.Emit(ILOpcode.calli, emitter.NewToken(targetSignature));
codestream.EmitLabel(done);
}
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 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()
{
const DelegateThunkKind maxThunkKind = DelegateThunkKind.ObjectArrayThunk;
ILEmitter emitter = new ILEmitter();
var codeStream = emitter.NewCodeStream();
ILCodeLabel returnNullLabel = emitter.NewCodeLabel();
ILCodeLabel[] labels = new ILCodeLabel[(int)maxThunkKind];
for (DelegateThunkKind i = 0; i < maxThunkKind; i++)
{
MethodDesc thunk = _delegateInfo.Thunks[i];
if (thunk != null)
labels[(int)i] = emitter.NewCodeLabel();
else
labels[(int)i] = returnNullLabel;
}
codeStream.EmitLdArg(1);
codeStream.EmitSwitch(labels);
codeStream.Emit(ILOpcode.br, returnNullLabel);
for (DelegateThunkKind i = 0; i < maxThunkKind; i++)
{
MethodDesc thunk = _delegateInfo.Thunks[i];
if (thunk != null)
{
codeStream.EmitLabel(labels[(int)i]);
codeStream.Emit(ILOpcode.ldftn, emitter.NewToken(thunk.InstantiateAsOpen()));
codeStream.Emit(ILOpcode.ret);
}
}
codeStream.EmitLabel(returnNullLabel);
codeStream.EmitLdc(0);
codeStream.Emit(ILOpcode.conv_i);
codeStream.Emit(ILOpcode.ret);
return emitter.Link(this);
}
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 is SignatureVariable || !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 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();
}
private void EmitPInvokeCall(PInvokeILCodeStreams ilCodeStreams)
{
ILEmitter emitter = ilCodeStreams.Emitter;
ILCodeStream fnptrLoadStream = ilCodeStreams.FunctionPointerLoadStream;
ILCodeStream callsiteSetupCodeStream = ilCodeStreams.CallsiteSetupCodeStream;
TypeSystemContext context = _targetMethod.Context;
TypeDesc nativeReturnType = _marshallers[0].NativeParameterType;
TypeDesc[] nativeParameterTypes = new TypeDesc[_marshallers.Length - 1];
// if the SetLastError flag is set in DllImport, clear the error code before doing P/Invoke
if (_flags.SetLastError)
{
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(
InteropTypes.GetPInvokeMarshal(context).GetKnownMethod("ClearLastWin32Error", null)));
}
for (int i = 1; i < _marshallers.Length; i++)
{
nativeParameterTypes[i - 1] = _marshallers[i].NativeParameterType;
}
if (MarshalHelpers.UseLazyResolution(_targetMethod,
_importMetadata.Module,
_pInvokeILEmitterConfiguration))
{
MetadataType lazyHelperType = context.GetHelperType("InteropHelpers");
FieldDesc lazyDispatchCell = _interopStateManager.GetPInvokeLazyFixupField(_targetMethod);
fnptrLoadStream.Emit(ILOpcode.ldsflda, emitter.NewToken(lazyDispatchCell));
fnptrLoadStream.Emit(ILOpcode.call, emitter.NewToken(lazyHelperType
.GetKnownMethod("ResolvePInvoke", null)));
MethodSignatureFlags unmanagedCallConv = _flags.UnmanagedCallingConvention;
MethodSignature nativeSig = new MethodSignature(
_targetMethod.Signature.Flags | unmanagedCallConv, 0, nativeReturnType,
nativeParameterTypes);
ILLocalVariable vNativeFunctionPointer = emitter.NewLocal(context
.GetWellKnownType(WellKnownType.IntPtr));
fnptrLoadStream.EmitStLoc(vNativeFunctionPointer);
callsiteSetupCodeStream.EmitLdLoc(vNativeFunctionPointer);
callsiteSetupCodeStream.Emit(ILOpcode.calli, emitter.NewToken(nativeSig));
}
else
{
// Eager call
MethodSignature nativeSig = new MethodSignature(
_targetMethod.Signature.Flags, 0, nativeReturnType, nativeParameterTypes);
MethodDesc nativeMethod =
new PInvokeTargetNativeMethod(_targetMethod, nativeSig);
callsiteSetupCodeStream.Emit(ILOpcode.call, emitter.NewToken(nativeMethod));
}
// if the SetLastError flag is set in DllImport, 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)));
}
}
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 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));
}
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 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()
{
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 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));
}
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 void EmitLdInd(TypeDesc type)
{
switch (type.Category)
{
case TypeFlags.Byte:
case TypeFlags.SByte:
case TypeFlags.Boolean:
Emit(ILOpcode.ldind_i1);
break;
case TypeFlags.Char:
case TypeFlags.UInt16:
case TypeFlags.Int16:
Emit(ILOpcode.ldind_i2);
break;
case TypeFlags.UInt32:
case TypeFlags.Int32:
Emit(ILOpcode.ldind_i4);
break;
case TypeFlags.UInt64:
case TypeFlags.Int64:
Emit(ILOpcode.ldind_i8);
break;
case TypeFlags.Single:
Emit(ILOpcode.ldind_r4);
break;
case TypeFlags.Double:
Emit(ILOpcode.ldind_r8);
break;
case TypeFlags.IntPtr:
case TypeFlags.UIntPtr:
case TypeFlags.Pointer:
case TypeFlags.FunctionPointer:
Emit(ILOpcode.ldind_i);
break;
case TypeFlags.Array:
case TypeFlags.SzArray:
case TypeFlags.Class:
case TypeFlags.Interface:
Emit(ILOpcode.ldind_ref);
break;
case TypeFlags.Enum:
// Use more efficient encoding for enum
EmitLdInd(type.UnderlyingType);
break;
case TypeFlags.ValueType:
case TypeFlags.Nullable:
Emit(ILOpcode.ldobj, _emitter.NewToken(type));
break;
default:
Debug.Assert(false, "Unexpected TypeDesc category");
break;
}
}