public override void PerformStackOperations(ILPreprocessState conversionState, ILOp theOp)
{
MethodBase constructorMethod = theOp.MethodToCall;
Type objectType = constructorMethod.DeclaringType;
if (typeof(Delegate).IsAssignableFrom(objectType))
{
StackItem funcPtrItem = conversionState.CurrentStackFrame.Stack.Pop();;
conversionState.CurrentStackFrame.Stack.Pop();
conversionState.CurrentStackFrame.Stack.Push(funcPtrItem);
return;
}
Types.MethodInfo constructorMethodInfo = conversionState.TheILLibrary.GetMethodInfo(constructorMethod);
ParameterInfo[] allParams = constructorMethod.GetParameters();
foreach (ParameterInfo aParam in allParams)
{
conversionState.CurrentStackFrame.Stack.Pop();
}
conversionState.CurrentStackFrame.Stack.Push(new StackItem()
{
isFloat = false,
sizeOnStackInBytes = 4,
isNewGCObject = true,
isGCManaged = true
});
}
public override void PerformStackOperations(ILPreprocessState conversionState, ILOp theOp)
{
MethodBase methodToCall = theOp.MethodToCall;
Types.MethodInfo methodToCallInfo = conversionState.TheILLibrary.GetMethodInfo(methodToCall);
if (methodToCall is MethodInfo)
{
Type retType = ((MethodInfo)methodToCall).ReturnType;
Types.TypeInfo retTypeInfo = conversionState.TheILLibrary.GetTypeInfo(retType);
StackItem returnItem = new StackItem()
{
isFloat = Utilities.IsFloat(retType),
sizeOnStackInBytes = retTypeInfo.SizeOnStackInBytes,
isGCManaged = retTypeInfo.IsGCManaged,
isValue = retTypeInfo.IsValueType
};
int bytesToAdd = 0;
List <Type> allParams = ((MethodInfo)methodToCall).GetParameters().Select(x => x.ParameterType).ToList();
if (!methodToCall.IsStatic)
{
allParams.Insert(0, methodToCall.DeclaringType);
}
foreach (Type aParam in allParams)
{
conversionState.CurrentStackFrame.Stack.Pop();
bytesToAdd += conversionState.TheILLibrary.GetTypeInfo(aParam).SizeOnStackInBytes;
}
if (bytesToAdd > 0)
{
if (returnItem.sizeOnStackInBytes != 0)
{
conversionState.CurrentStackFrame.Stack.Push(returnItem);
}
}
else if (returnItem.sizeOnStackInBytes != 0)
{
conversionState.CurrentStackFrame.Stack.Push(returnItem);
}
}
else if (methodToCall is ConstructorInfo)
{
ConstructorInfo aConstructor = (ConstructorInfo)methodToCall;
if (aConstructor.IsStatic)
{
//Static constructors do not have parameters or return values
}
else
{
ParameterInfo[] allParams = methodToCall.GetParameters();
foreach (ParameterInfo aParam in allParams)
{
conversionState.CurrentStackFrame.Stack.Pop();
}
}
}
}
/// <summary>
/// Reads a plugged method.
/// </summary>
/// <param name="aMethodInfo">The method to read.</param>
/// <returns>The new IL block for the method.</returns>
public static ILBlock ReadPlugged(Types.MethodInfo aMethodInfo)
{
string PlugPath = aMethodInfo.PlugAttribute.ASMFilePath;
return(new ILBlock()
{
PlugPath = string.IsNullOrWhiteSpace(PlugPath) ? " " : PlugPath,
TheMethodInfo = aMethodInfo
});
}
/// <summary>
/// Reads the specified method.
/// </summary>
/// <param name="aMethodInfo">The method to read.</param>
/// <returns>The new IL block for the method.</returns>
public static ILBlock Read(Types.MethodInfo aMethodInfo)
{
if (aMethodInfo.IsPlugged)
{
return(ReadPlugged(aMethodInfo));
}
else
{
return(ReadNonPlugged(aMethodInfo));
}
}
/// <summary>
/// Scans the specified plugged IL block.
/// </summary>
/// <param name="TheLibrary">The library currently being compiled.</param>
/// <param name="theMethodInfo">The method which generated the IL block.</param>
/// <param name="theILBlock">The IL block to scan.</param>
/// <returns>CompileResult.OK.</returns>
private static CompileResult ScanPluggedILBlock(ILLibrary TheLibrary, Types.MethodInfo theMethodInfo, ILBlock theILBlock)
{
TheLibrary.TheASMLibrary.ASMBlocks.Add(new ASM.ASMBlock()
{
PlugPath = theILBlock.PlugPath,
OriginMethodInfo = theMethodInfo,
Priority = theMethodInfo.Priority
});
return(CompileResult.OK);
}
/// <summary>
/// See base class documentation.
/// </summary>
/// <param name="theOp">See base class documentation.</param>
/// <param name="conversionState">See base class documentation.</param>
/// <returns>See base class documentation.</returns>
public override void Convert(ILConversionState conversionState, ILOp theOp)
{
//Get the ID (i.e. ASM label) of the method to load a pointer to
Types.MethodInfo methodInfo = conversionState.TheILLibrary.GetMethodInfo(theOp.MethodToCall);
string methodID = methodInfo.ID;
bool addExternalLabel = methodID != conversionState.Input.TheMethodInfo.ID;
//If we want to load the pointer at a specified IL op number:
if (theOp.LoadAtILOpAfterOp != null)
{
ILBlock anILBlock = conversionState.TheILLibrary.GetILBlock(methodInfo);
int index = anILBlock.ILOps.IndexOf(theOp.LoadAtILOpAfterOp);
if (index == -1)
{
throw new NullReferenceException("LoadAtILOpAfterOp not found in IL block!");
}
index++;
methodID = ASM.ASMBlock.GenerateLabel(methodID, anILBlock.PositionOf(anILBlock.ILOps[index]));
}
else if (theOp.LoadAtILOffset != int.MaxValue)
{
//Append the IL sub-label to the ID
ILBlock anILBlock = conversionState.TheILLibrary.GetILBlock(methodInfo);
methodID = ASM.ASMBlock.GenerateLabel(methodID, anILBlock.PositionOf(anILBlock.At(theOp.LoadAtILOffset)));
//Note: This is used by try/catch/finally blocks for pushing pointers
// to catch/finally handlers and filters
}
if (addExternalLabel)
{
conversionState.AddExternalLabel(methodID);
}
//Push the pointer to the function
conversionState.Append(new ASMOps.La()
{
Dest = "$t4", Label = methodID
});
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$t4"
});
conversionState.CurrentStackFrame.Stack.Push(new StackItem()
{
isFloat = false,
sizeOnStackInBytes = 4,
isGCManaged = false
});
}
public override void Preprocess(ILPreprocessState preprocessState, ILOp theOp)
{
Types.MethodInfo methodInfo = preprocessState.TheILLibrary.GetMethodInfo(theOp.MethodToCall);
if (theOp.LoadAtILOpAfterOp != null)
{
ILBlock anILBlock = preprocessState.TheILLibrary.GetILBlock(methodInfo);
int index = anILBlock.ILOps.IndexOf(theOp.LoadAtILOpAfterOp);
index++;
anILBlock.ILOps[index].LabelRequired = true;
}
else if (theOp.LoadAtILOffset != int.MaxValue)
{
int offset = theOp.LoadAtILOffset;
ILOp theLoadedOp = preprocessState.TheILLibrary.GetILBlock(methodInfo).At(offset);
theLoadedOp.LabelRequired = true;
}
}
/// <summary>
/// Gets the IL block for the specified method.
/// </summary>
/// <param name="theInfo">The method to get the IL block of.</param>
/// <param name="checkDepLibs">Whether to check dependencies or not.</param>
/// <returns>The IL block or null if none found.</returns>
public ILBlock GetILBlock(Types.MethodInfo theInfo, bool checkDepLibs = true)
{
if (ILBlocks.ContainsKey(theInfo))
{
return(ILBlocks[theInfo]);
}
if (checkDepLibs)
{
foreach (ILLibrary depLib in Dependencies)
{
ILBlock result = depLib.GetILBlock(theInfo);
if (result != null)
{
return(result);
}
}
}
return(null);
}
/// <summary>
/// See base class documentation.
/// </summary>
/// <param name="theOp">See base class documentation.</param>
/// <param name="conversionState">See base class documentation.</param>
/// <returns>See base class documentation.</returns>
public override void Convert(ILConversionState conversionState, ILOp theOp)
{
StackItem theItem = conversionState.CurrentStackFrame.Stack.Pop();
if (theItem.isNewGCObject)
{
//Decrement ref count
//Get the ID of method to call as it will be labeled in the output ASM.
Types.MethodInfo anInfo = conversionState.GetDecrementRefCountMethodInfo();
string methodID = anInfo.ID;
conversionState.AddExternalLabel(anInfo.ID);
//Append the actual call
conversionState.Append(new ASMOps.Call()
{
Target = methodID
});
}
conversionState.Append(new ASMOps.Add()
{
Src = theItem.sizeOnStackInBytes.ToString(), Dest = "ESP"
});
}
/// <summary>
/// Gets the method info for the specified method.
/// </summary>
/// <param name="theMethod">The method to get method info for.</param>
/// <returns>The method info or null if not found.</returns>
public Types.MethodInfo GetMethodInfo(MethodBase theMethod)
{
foreach (Types.TypeInfo aTypeInfo in TypeInfos)
{
foreach (Types.MethodInfo aMethodInfo in aTypeInfo.MethodInfos)
{
if (aMethodInfo.UnderlyingInfo.Equals(theMethod))
{
return(aMethodInfo);
}
}
}
foreach (ILLibrary depLib in Dependencies)
{
Types.MethodInfo result = depLib.GetMethodInfo(theMethod);
if (result != null)
{
return(result);
}
}
return(null);
}
/// <summary>
/// See base class documentation.
/// </summary>
/// <param name="theOp">See base class documentation.</param>
/// <param name="conversionState">See base class documentation.</param>
/// <returns>See base class documentation.</returns>
public override void Convert(ILConversionState conversionState, ILOp theOp)
{
MethodBase constructorMethod = theOp.MethodToCall;
Type objectType = constructorMethod.DeclaringType;
//New obj must:
// - Ignore for creation of Delegates
// - Allocate memory on the heap for the object
// - If no memory is left, throw a panic attack because we're out of memory...
// - Call the specified constructor
if (typeof(Delegate).IsAssignableFrom(objectType))
{
conversionState.Append(new ASMOps.Comment("Ignore newobj calls for Delegates"));
//Still need to:
// - Remove the "object" param but preserve the "function pointer"
StackItem funcPtrItem = conversionState.CurrentStackFrame.Stack.Pop();;
conversionState.CurrentStackFrame.Stack.Pop();
conversionState.CurrentStackFrame.Stack.Push(funcPtrItem);
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = "0($sp)", Dest = "$t0", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg
});
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = "$t0", Dest = "4($sp)", MoveType = ASMOps.Mov.MoveTypes.SrcRegToDestMemory
});
conversionState.Append(new ASMOps.Add()
{
Src1 = "$sp", Src2 = "4", Dest = "$sp"
});
return;
}
Types.MethodInfo constructorMethodInfo = conversionState.TheILLibrary.GetMethodInfo(constructorMethod);
conversionState.AddExternalLabel(conversionState.GetNewObjMethodInfo().ID);
conversionState.AddExternalLabel(conversionState.GetThrowNullReferenceExceptionMethodInfo().ID);
conversionState.AddExternalLabel(constructorMethodInfo.ID);
int currOpPosition = conversionState.PositionOf(theOp);
//Attempt to allocate memory on the heap for the new object
//This involves:
// - Pushing the type reference onto the stack
// - Calling GC NewObj method
// - Check the pointer == 0, if so, out of memory
//Push type reference
string typeIdStr = conversionState.TheILLibrary.GetTypeInfo(objectType).ID;
conversionState.AddExternalLabel(typeIdStr);
conversionState.Append(new ASMOps.La()
{
Dest = "$t4", Label = typeIdStr
});
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$t4"
});
//Push a word for return value (i.e. new object pointer)
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$zero"
});
//Get the GC.NewObj method ID (i.e. ASM label)
string methodLabel = conversionState.GetNewObjMethodInfo().ID;
//Call GC.NewObj
conversionState.Append(new ASMOps.Call()
{
Target = methodLabel
});
//Pop the return value (i.e. new object pointer)
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t0"
});
//Remove arg 0 from stack
conversionState.Append(new ASMOps.Add()
{
Src1 = "$sp", Src2 = "4", Dest = "$sp"
});
//Check if pointer == 0?
//If it isn't 0, not out of memory so continue execution
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.BranchNotZero, Src1 = "$t0", DestILPosition = currOpPosition, Extension = "NotNullMem"
});
//If we are out of memory, we have a massive problem
//Because it means we don't have space to create a new exception object
//So ultimately we just have to throw a kernel panic
//Throw a panic attack... ( :/ ) by calling kernel Halt(uint lastAddress)
//result.AppendLine("call GetEIP");
//result.AppendLine("push dword esp");
//result.AppendLine("push dword ebp");
//result.AppendLine("pushad");
//result.AppendLine("mov dword eax, 0xDEADBEEF");
//result.AppendLine("mov dword ebx, 0x1");
//result.AppendLine("mov dword ecx, 1");
//result.AppendLine("mov dword [staticfield_System_Boolean_Kernel_FOS_System_GC_Enabled], 1");
//result.AppendLine("mov dword [staticfield_System_Boolean_Kernel_FOS_System_Heap_PreventAllocation], 0");
//result.AppendLine("jmp method_System_Void_RETEND_Kernel_PreReqs_DECLEND_PageFaultDetection_NAMEEND___Fail");
conversionState.Append(new ASMOps.Call()
{
Target = "GetEIP"
});
conversionState.AddExternalLabel("GetEIP");
conversionState.Append(new ASMOps.Call()
{
Target = conversionState.GetThrowNullReferenceExceptionMethodInfo().ID
});
//Insert the not null label
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "NotNullMem"
});
//Call the specified constructor
//This involves:
// - Push empty dword onto stack
// - Move all args down by one dword
// - Move object reference into dword as first arg
// - Call constructor
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$zero"
});
int sizeOfArgs = 0;
ParameterInfo[] allParams = constructorMethod.GetParameters();
foreach (ParameterInfo aParam in allParams)
{
sizeOfArgs += conversionState.TheILLibrary.GetTypeInfo(aParam.ParameterType).SizeOnStackInBytes;
conversionState.CurrentStackFrame.Stack.Pop();
}
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = "$sp", Dest = "$t1", MoveType = ASMOps.Mov.MoveTypes.RegToReg
});
if (sizeOfArgs > 0)
{
if (sizeOfArgs % 4 != 0)
{
throw new InvalidOperationException("sizeOfArgs not exact multiple of 4!");
}
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = (sizeOfArgs / 4).ToString(), Dest = "$t2", MoveType = ASMOps.Mov.MoveTypes.ImmediateToReg
});
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "ShiftArgsLoop"
});
//Decrement counter ($t2)
conversionState.Append(new ASMOps.Sub()
{
Src1 = "$t2", Src2 = "1", Dest = "$t2"
});
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = "4($t1)", Dest = "$t3" });
GlobalMethods.LoadData(conversionState, theOp, "$t1", "$t3", 4, 4);
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = "$t3", Dest = "0($t1)" });
GlobalMethods.StoreData(conversionState, theOp, "$t1", "$t3", 0, 4);
conversionState.Append(new ASMOps.Add()
{
Src1 = "$t1", Src2 = "4", Dest = "$t1"
});
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.BranchNotZero, Src1 = "$t2", DestILPosition = currOpPosition, Extension = "ShiftArgsLoop"
});
}
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = "$t0", Dest = "0($t1)" });
GlobalMethods.StoreData(conversionState, theOp, "$t1", "$t0", 0, 4);
conversionState.Append(new ASMOps.Call()
{
Target = constructorMethodInfo.ID
});
//Only remove args from stack - we want the object pointer to remain on the stack
conversionState.Append(new ASMOps.Add()
{
Src1 = "$sp", Src2 = sizeOfArgs.ToString(), Dest = "$sp"
});
conversionState.CurrentStackFrame.Stack.Push(new StackItem()
{
isFloat = false,
sizeOnStackInBytes = 4,
isNewGCObject = true,
isGCManaged = true
});
}
public override void PerformStackOperations(ILPreprocessState conversionState, ILOp theOp)
{
MethodBase methodToCall = theOp.MethodToCall;
Types.MethodInfo methodToCallInfo = conversionState.TheILLibrary.GetMethodInfo(methodToCall);
if (methodToCall is MethodInfo)
{
if (typeof(Delegate).IsAssignableFrom(((MethodInfo)methodToCall).DeclaringType))
{
List <Type> allParams = ((MethodInfo)methodToCall).GetParameters().Select(x => x.ParameterType).ToList();
Type retType = ((MethodInfo)methodToCall).ReturnType;
Types.TypeInfo retTypeInfo = conversionState.TheILLibrary.GetTypeInfo(retType);
StackItem returnItem = new StackItem()
{
isFloat = Utilities.IsFloat(retType),
sizeOnStackInBytes = retTypeInfo.SizeOnStackInBytes,
isGCManaged = retTypeInfo.IsGCManaged,
isValue = retTypeInfo.IsValueType
};
int bytesToAdd = 4;
foreach (Type aParam in allParams)
{
conversionState.CurrentStackFrame.Stack.Pop();
bytesToAdd += conversionState.TheILLibrary.GetTypeInfo(aParam).SizeOnStackInBytes;
}
if (returnItem.sizeOnStackInBytes != 0)
{
conversionState.CurrentStackFrame.Stack.Push(returnItem);
}
}
else
{
string methodIDValueWanted = methodToCallInfo.IDValue.ToString();
int currOpPosition = conversionState.PositionOf(theOp);
Types.TypeInfo declaringTypeInfo = conversionState.TheILLibrary.GetTypeInfo(methodToCall.DeclaringType);
Type retType = ((MethodInfo)methodToCall).ReturnType;
Types.TypeInfo retTypeInfo = conversionState.TheILLibrary.GetTypeInfo(retType);
StackItem returnItem = new StackItem()
{
isFloat = Utilities.IsFloat(retType),
sizeOnStackInBytes = retTypeInfo.SizeOnStackInBytes,
isGCManaged = retTypeInfo.IsGCManaged,
isValue = retTypeInfo.IsValueType
};
int bytesToAdd = 0;
List <Type> allParams = ((MethodInfo)methodToCall).GetParameters().Select(x => x.ParameterType).ToList();
if (!methodToCall.IsStatic)
{
allParams.Insert(0, methodToCall.DeclaringType);
}
foreach (Type aParam in allParams)
{
conversionState.CurrentStackFrame.Stack.Pop();
bytesToAdd += conversionState.TheILLibrary.GetTypeInfo(aParam).SizeOnStackInBytes;
}
if (bytesToAdd > 0)
{
if (returnItem.sizeOnStackInBytes != 0)
{
conversionState.CurrentStackFrame.Stack.Push(returnItem);
}
}
else if (returnItem.sizeOnStackInBytes != 0)
{
conversionState.CurrentStackFrame.Stack.Push(returnItem);
}
}
}
}
/// <summary>
/// See base class documentation.
/// </summary>
/// <param name="theOp">See base class documentation.</param>
/// <param name="conversionState">See base class documentation.</param>
/// <returns>See base class documentation.</returns>
/// <exception cref="System.NotSupportedException">
/// Thrown if any argument or the return value is a floating point number.
/// </exception>
public override void Convert(ILConversionState conversionState, ILOp theOp)
{
MethodBase methodToCall = theOp.MethodToCall;
Types.MethodInfo methodToCallInfo = conversionState.TheILLibrary.GetMethodInfo(methodToCall);
conversionState.AddExternalLabel(conversionState.GetThrowNullReferenceExceptionMethodInfo().ID);
conversionState.AddExternalLabel(conversionState.GetThrowIndexOutOfRangeExceptionMethodInfo().ID);
//The method to call is a method base
//A method base can be either a method info i.e. a normal method
//or a constructor method. The two types are treated separately.
if (methodToCall is MethodInfo)
{
//Need to do callvirt related stuff to load address of method to call
// - Check for invoke of a delegate - if so, treat rather differently from normal callvirt
if (typeof(Delegate).IsAssignableFrom(((MethodInfo)methodToCall).DeclaringType))
{
//Callvirt to delegate method
// - We only support calls to Invoke at the moment
if (methodToCall.Name != "Invoke")
{
throw new NotSupportedException("Callvirt to Delegate method not supported! Method name: " + methodToCall.Name);
}
int bytesForAllParams = ((MethodInfo)methodToCall).GetParameters().Select(x => conversionState.TheILLibrary.GetTypeInfo(x.ParameterType).SizeOnStackInBytes).Sum();
// - Move into $t0 address of function to call from stack - delegate reference is function pointer
//All the parameters for the method that was called
List <Type> allParams = ((MethodInfo)methodToCall).GetParameters().Select(x => x.ParameterType).ToList();
int bytesForParams = allParams.Select(x => conversionState.TheILLibrary.GetTypeInfo(x).SizeOnStackInBytes).Sum();
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = bytesForParams + "($sp)", Dest = "$t0", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg
});
//Allocate space on the stack for the return value as necessary
Type retType = ((MethodInfo)methodToCall).ReturnType;
Types.TypeInfo retTypeInfo = conversionState.TheILLibrary.GetTypeInfo(retType);
StackItem returnItem = new StackItem()
{
isFloat = Utilities.IsFloat(retType),
sizeOnStackInBytes = retTypeInfo.SizeOnStackInBytes,
isGCManaged = retTypeInfo.IsGCManaged,
isValue = retTypeInfo.IsValueType
};
//We do not push the return value onto the stack unless it has size > 0
//We do not push the return value onto our stack at this point - it is pushed after the call is done
if (returnItem.sizeOnStackInBytes != 0)
{
if (returnItem.isFloat)
{
//SUPPORT - floats
throw new NotSupportedException("Cannot handle float return values!");
}
else if (returnItem.sizeOnStackInBytes == 4)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$zero"
});
}
else if (returnItem.sizeOnStackInBytes == 8)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$zero"
});
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$zero"
});
}
else
{
throw new NotSupportedException("Invalid return stack operand size!");
}
}
//Append the actual call
conversionState.Append(new ASMOps.Call()
{
Target = "$t0"
});
//After a call, we need to remove the return value and parameters from the stack
//This is most easily done by just adding the total number of bytes for params and
//return value to the stack pointer ($sp register).
//Stores the number of bytes to add
// - Initially at least 4 for the delegate (method) ref/pointer
int bytesToAdd = 4;
//Go through all params that must be removed
foreach (Type aParam in allParams)
{
//Pop the paramter off our stack
//(Note: Return value was never pushed onto our stack. See above)
conversionState.CurrentStackFrame.Stack.Pop();
//Add the size of the paramter to the total number of bytes to pop
bytesToAdd += conversionState.TheILLibrary.GetTypeInfo(aParam).SizeOnStackInBytes;
}
//If there is a return value on the stack
if (returnItem.sizeOnStackInBytes != 0)
{
//We need to store the return value then pop all the params
//We now push the return value onto our stack as,
//after all is said and done below, it will be the
//top item on the stack
conversionState.CurrentStackFrame.Stack.Push(returnItem);
//SUPPORT - floats (with above)
//Pop the return value into the $t0 register
//We will push it back on after params are skipped over.
if (returnItem.sizeOnStackInBytes == 4)
{
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t0"
});
}
else if (returnItem.sizeOnStackInBytes == 8)
{
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t0"
});
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t3"
});
}
}
//Skip over the params
conversionState.Append(new ASMOps.Add()
{
Src1 = "$sp", Src2 = bytesToAdd.ToString(), Dest = "$sp"
});
//If necessary, push the return value onto the stack.
if (returnItem.sizeOnStackInBytes != 0)
{
//SUPPORT - floats (with above)
//The return value was stored in $t0
//So push it back onto the stack
if (returnItem.sizeOnStackInBytes == 4)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$t0"
});
}
else if (returnItem.sizeOnStackInBytes == 8)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$t3"
});
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$t0"
});
}
}
}
else
{
//Normal callvirt
// - Get object ref from loaded args
// - Check object ref not null
// - Get type table entry from object ref
// - Get method table from type table entry
// - Scan method table for the method we want
// - If found, load method address
// - Else, check for parent type method table
// - If no parent type method table, throw exception
// - Else, scan parent type method table
string methodIDValueWanted = methodToCallInfo.IDValue.ToString();
int currOpPosition = conversionState.PositionOf(theOp);
Types.TypeInfo declaringTypeInfo = conversionState.TheILLibrary.GetTypeInfo(methodToCall.DeclaringType);
//DB_Type declaringDBType = DebugDatabase.GetType(conversionState.GetTypeID(methodToCall.DeclaringType));
//Get object ref
int bytesForAllParams = ((MethodInfo)methodToCall).GetParameters().Select(x => conversionState.TheILLibrary.GetTypeInfo(x.ParameterType).SizeOnStackInBytes).Sum();
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = bytesForAllParams + "($sp)", Dest = "$t0", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg
});
//Check object ref
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.BranchNotZero, Src1 = "$t0", Src2 = "$zero", DestILPosition = currOpPosition, Extension = "NotNull"
});
conversionState.Append(new ASMOps.Call()
{
Target = "GetEIP"
});
conversionState.AddExternalLabel("GetEIP");
conversionState.Append(new ASMOps.Call()
{
Target = conversionState.GetThrowNullReferenceExceptionMethodInfo().ID
});
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "NotNull"
});
//Get type ref
int typeOffset = conversionState.TheILLibrary.GetFieldInfo(declaringTypeInfo, "_Type").OffsetInBytes;
//conversionState.Append(new ASMOps.La() { Dest = "$t1", Label = "type_Testing1_String" });
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = typeOffset.ToString() + "($t0)", Dest = "$t0", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg });
GlobalMethods.LoadData(conversionState, theOp, "$t0", "$t0", typeOffset, 4);
//Get method table ref
int methodTablePtrOffset = conversionState.GetTypeFieldOffset("MethodTablePtr");
//conversionState.Append(new ASMOps.La() { Dest = "$t0", Label = "type_Testing1_String_MethodTable" });
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = methodTablePtrOffset.ToString() + "($t0)", Dest = "$t0", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg });
GlobalMethods.LoadData(conversionState, theOp, "$t0", "$t0", methodTablePtrOffset, 4);
//Loop through entries
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "LoopMethodTable"
});
//Load ID Val for current entry
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = "0($t0)", Dest = "$t1", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg });
GlobalMethods.LoadData(conversionState, theOp, "$t0", "$t1", 0, 4);
//Compare to wanted ID value
conversionState.Append(new ASMOps.Mov()
{
Src = methodIDValueWanted, Dest = "$t4", MoveType = ASMOps.Mov.MoveTypes.ImmediateToReg
});
//If equal, load method address into $t0
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.BranchNotEqual, Src1 = "$t1", Src2 = "$t4", DestILPosition = currOpPosition, Extension = "NotEqual"
});
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = "4($t0)", Dest = "$t0", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg });
GlobalMethods.LoadData(conversionState, theOp, "$t0", "$t0", 4, 4);
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.Branch, DestILPosition = currOpPosition, Extension = "Call"
});
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "NotEqual"
});
//Else, compare to 0 to check for end of table
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.BranchZero, Src1 = "$t1", DestILPosition = currOpPosition, Extension = "EndOfTable"
});
//Not 0? Move to next entry then loop again
conversionState.Append(new ASMOps.Add()
{
Src1 = "$t0", Src2 = "8", Dest = "$t0"
});
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.Branch, DestILPosition = currOpPosition, Extension = "LoopMethodTable"
});
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "EndOfTable"
});
//Compare address value to 0
//If not zero, there is a parent method table to check
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = "4($t0)", Dest = "$t1", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg });
GlobalMethods.LoadData(conversionState, theOp, "$t0", "$t1", 4, 4);
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.BranchZero, Src1 = "$t1", DestILPosition = currOpPosition, Extension = "NotFound"
});
//Load parent method table and loop
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = "$t1", Dest = "$t0", MoveType = ASMOps.Mov.MoveTypes.RegToReg
});
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.Branch, DestILPosition = currOpPosition, Extension = "LoopMethodTable"
});
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "NotFound"
});
//Throw exception!
conversionState.Append(new ASMOps.Call()
{
Target = "GetEIP"
});
conversionState.AddExternalLabel("GetEIP");
conversionState.Append(new ASMOps.Call()
{
Target = conversionState.GetThrowNullReferenceExceptionMethodInfo().ID
});
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "Call"
});
//Allocate space on the stack for the return value as necessary
Type retType = ((MethodInfo)methodToCall).ReturnType;
Types.TypeInfo retTypeInfo = conversionState.TheILLibrary.GetTypeInfo(retType);
StackItem returnItem = new StackItem()
{
isFloat = Utilities.IsFloat(retType),
sizeOnStackInBytes = retTypeInfo.SizeOnStackInBytes,
isGCManaged = retTypeInfo.IsGCManaged,
isValue = retTypeInfo.IsValueType
};
//We do not push the return value onto the stack unless it has size > 0
//We do not push the return value onto our stack at this point - it is pushed after the call is done
if (returnItem.sizeOnStackInBytes != 0)
{
if (returnItem.isFloat)
{
//SUPPORT - floats
throw new NotSupportedException("Cannot handle float return values!");
}
else if (returnItem.sizeOnStackInBytes == 4)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$zero"
});
}
else if (returnItem.sizeOnStackInBytes == 8)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$zero"
});
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$zero"
});
}
else
{
throw new NotSupportedException("Invalid return stack operand size!");
}
}
//Append the actual call
conversionState.Append(new ASMOps.Call()
{
Target = "$t0"
});
//After a call, we need to remove the return value and parameters from the stack
//This is most easily done by just adding the total number of bytes for params and
//return value to the stack pointer ($sp register).
//Stores the number of bytes to add
int bytesToAdd = 0;
//All the parameters for the method that was called
List <Type> allParams = ((MethodInfo)methodToCall).GetParameters().Select(x => x.ParameterType).ToList();
//Go through each one
if (!methodToCall.IsStatic)
{
allParams.Insert(0, methodToCall.DeclaringType);
}
foreach (Type aParam in allParams)
{
//Pop the parameter off our stack
//(Note: Return value was never pushed onto our stack. See above)
conversionState.CurrentStackFrame.Stack.Pop();
//Add the size of the parameter to the total number of bytes to pop
bytesToAdd += conversionState.TheILLibrary.GetTypeInfo(aParam).SizeOnStackInBytes;
}
//If the number of bytes to add to skip over params is > 0
if (bytesToAdd > 0)
{
//If there is a return value on the stack
if (returnItem.sizeOnStackInBytes != 0)
{
//We need to store the return value then pop all the params
//We now push the return value onto our stack as,
//after all is said and done below, it will be the
//top item on the stack
conversionState.CurrentStackFrame.Stack.Push(returnItem);
//SUPPORT - floats (with above)
//Pop the return value into the $t0 register
//We will push it back on after params are skipped over.
if (returnItem.sizeOnStackInBytes == 4)
{
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t0"
});
}
else if (returnItem.sizeOnStackInBytes == 8)
{
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t0"
});
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t3"
});
}
}
//Skip over the params
conversionState.Append(new ASMOps.Add()
{
Src1 = "$sp", Src2 = bytesToAdd.ToString(), Dest = "$sp"
});
//If necessary, push the return value onto the stack.
if (returnItem.sizeOnStackInBytes != 0)
{
//SUPPORT - floats (with above)
//The return value was stored in $t0
//So push it back onto the stack
if (returnItem.sizeOnStackInBytes == 4)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$t0"
});
}
else if (returnItem.sizeOnStackInBytes == 8)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$t3"
});
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$t0"
});
}
}
}
//No params to skip over but we might still need to store return value
else if (returnItem.sizeOnStackInBytes != 0)
{
//The return value will be the top item on the stack.
//So all we need to do is push the return item onto our stack.
conversionState.CurrentStackFrame.Stack.Push(returnItem);
}
}
}
else if (methodToCall is ConstructorInfo)
{
throw new NotSupportedException("How the hell are we getting callvirts to constructor methods?!");
}
}
/// <summary>
/// See base class documentation.
/// </summary>
/// <param name="theOp">See base class documentation.</param>
/// <param name="conversionState">See base class documentation.</param>
/// <returns>See base class documentation.</returns>
/// <exception cref="System.NotSupportedException">
/// Thrown if any argument or the return value is a floating point number.
/// </exception>
public override void Convert(ILConversionState conversionState, ILOp theOp)
{
MethodBase methodToCall = theOp.MethodToCall;
Types.MethodInfo methodToCallInfo = conversionState.TheILLibrary.GetMethodInfo(methodToCall);
conversionState.AddExternalLabel(methodToCallInfo.ID);
//The method to call is a method base
//A method base can be either a method info i.e. a normal method
//or a constructor method. The two types are treated separately.
if (methodToCall is MethodInfo)
{
//Allocate space on the stack for the return value as necessary
Type retType = ((MethodInfo)methodToCall).ReturnType;
Types.TypeInfo retTypeInfo = conversionState.TheILLibrary.GetTypeInfo(retType);
StackItem returnItem = new StackItem()
{
isFloat = Utilities.IsFloat(retType),
sizeOnStackInBytes = retTypeInfo.SizeOnStackInBytes,
isGCManaged = retTypeInfo.IsGCManaged
};
//We do not push the return value onto the stack unless it has size > 0
//We do not push the return value onto our stack at this point - it is pushed after the call is done
if (returnItem.sizeOnStackInBytes != 0)
{
if (returnItem.isFloat)
{
//SUPPORT - floats
throw new NotSupportedException("Cannot handle float return values!");
}
else if (returnItem.sizeOnStackInBytes == 4)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Dword, Src = "0"
});
}
else if (returnItem.sizeOnStackInBytes == 8)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Dword, Src = "0"
});
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Dword, Src = "0"
});
}
else
{
throw new NotSupportedException("Invalid return stack operand size!");
}
}
//Append the actual call
conversionState.Append(new ASMOps.Call()
{
Target = methodToCallInfo.ID
});
//After a call, we need to remove the return value and parameters from the stack
//This is most easily done by just adding the total number of bytes for params and
//return value to the stack pointer (ESP register).
//Stores the number of bytes to add
int bytesToAdd = 0;
//All the parameters for the method that was called
List <Type> allParams = ((MethodInfo)methodToCall).GetParameters().Select(x => x.ParameterType).ToList();
//Go through each one
if (!methodToCall.IsStatic)
{
allParams.Insert(0, methodToCall.DeclaringType);
}
foreach (Type aParam in allParams)
{
//Pop the paramter off our stack
//(Note: Return value was never pushed onto our stack. See above)
conversionState.CurrentStackFrame.Stack.Pop();
//Add the size of the paramter to the total number of bytes to pop
bytesToAdd += conversionState.TheILLibrary.GetTypeInfo(aParam).SizeOnStackInBytes;
}
//If the number of bytes to add to skip over params is > 0
if (bytesToAdd > 0)
{
//If there is a return value on the stack
if (returnItem.sizeOnStackInBytes != 0)
{
//We need to store the return value then pop all the params
//We now push the return value onto our stack as,
//after all is said and done below, it will be the
//top item on the stack
conversionState.CurrentStackFrame.Stack.Push(returnItem);
//SUPPORT - floats (with above)
//Pop the return value into the eax register
//We will push it back on after params are skipped over.
if (returnItem.sizeOnStackInBytes == 4)
{
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Dword, Dest = "EAX"
});
}
else if (returnItem.sizeOnStackInBytes == 8)
{
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Dword, Dest = "EAX"
});
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Dword, Dest = "EDX"
});
}
}
//Skip over the params
conversionState.Append(new ASMOps.Add()
{
Src = bytesToAdd.ToString(), Dest = "ESP"
});
//If necessary, push the return value onto the stack.
if (returnItem.sizeOnStackInBytes != 0)
{
//SUPPORT - floats (with above)
//The return value was stored in eax
//So push it back onto the stack
if (returnItem.sizeOnStackInBytes == 4)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Dword, Src = "EAX"
});
}
else if (returnItem.sizeOnStackInBytes == 8)
{
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Dword, Src = "EDX"
});
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Dword, Src = "EAX"
});
}
}
}
//No params to skip over but we might still need to store return value
else if (returnItem.sizeOnStackInBytes != 0)
{
//The return value will be the top item on the stack.
//So all we need to do is push the return item onto our stack.
conversionState.CurrentStackFrame.Stack.Push(returnItem);
}
}
else if (methodToCall is ConstructorInfo)
{
ConstructorInfo aConstructor = (ConstructorInfo)methodToCall;
if (aConstructor.IsStatic)
{
//Static constructors do not have parameters or return values
//Append the actual call
conversionState.Append(new ASMOps.Call()
{
Target = methodToCallInfo.ID
});
}
else
{
//Append the actual call
conversionState.Append(new ASMOps.Call()
{
Target = methodToCallInfo.ID
});
//After a call, we need to remove the parameters from the stack
//This is most easily done by just adding the total number of bytes for params
//to the stack pointer (ESP register).
//Stores the number of bytes to add
int bytesToAdd = 0;
//All the parameters for the method that was called
ParameterInfo[] allParams = methodToCall.GetParameters();
//Go through each one
foreach (ParameterInfo aParam in allParams)
{
//Pop the paramter off our stack
//(Note: Return value was never pushed onto our stack. See above)
conversionState.CurrentStackFrame.Stack.Pop();
//Add the size of the paramter to the total number of bytes to pop
bytesToAdd += conversionState.TheILLibrary.GetTypeInfo(aParam.ParameterType).SizeOnStackInBytes;
}
//Add 4 bytes for the instance ref
bytesToAdd += 4;
//If the number of bytes to add to skip over params is > 0
if (bytesToAdd > 0)
{
//Skip over the params
conversionState.Append(new ASMOps.Add()
{
Src = bytesToAdd.ToString(), Dest = "ESP"
});
}
}
}
}
/// <summary>
/// Reads a non-plugged method.
/// </summary>
/// <param name="aMethodInfo">The method to read.</param>
/// <returns>The new IL block for the method.</returns>
public static ILBlock ReadNonPlugged(Types.MethodInfo aMethodInfo)
{
ILBlock result = new ILBlock()
{
TheMethodInfo = aMethodInfo
};
MethodBody methodBody = aMethodInfo.MethodBody;
//Method body for something like [DelegateType].Invoke() is null.
// So just return an empty method if that is this case.
if (methodBody != null)
{
foreach (LocalVariableInfo aLocal in methodBody.LocalVariables)
{
aMethodInfo.LocalInfos.Add(new Types.VariableInfo()
{
UnderlyingType = aLocal.LocalType,
Position = aLocal.LocalIndex
});
}
byte[] ILBytes = methodBody.GetILAsByteArray();
int ILBytesPos = 0;
while (ILBytesPos < ILBytes.Length)
{
OpCode currOpCode;
ushort currOpCodeID = 0;
int currOpBytesSize = 0;
if (ILBytes[ILBytesPos] == 0xFE)
{
currOpCodeID = (ushort)(0xFE00 + (short)ILBytes[ILBytesPos + 1]);
currOpBytesSize += 2;
}
else
{
currOpCodeID = (ushort)ILBytes[ILBytesPos];
currOpBytesSize++;
}
currOpCode = AllOpCodes[currOpCodeID];
int operandSize = 0;
switch (currOpCode.OperandType)
{
#region Operands
case OperandType.InlineBrTarget:
operandSize = 4;
break;
case OperandType.InlineField:
operandSize = 4;
break;
case OperandType.InlineI:
operandSize = 4;
break;
case OperandType.InlineI8:
operandSize = 8;
break;
case OperandType.InlineMethod:
operandSize = 4;
break;
case OperandType.InlineNone:
//No operands = no op size
break;
case OperandType.InlineR:
operandSize = 8;
break;
case OperandType.InlineSig:
operandSize = 4;
break;
case OperandType.InlineString:
operandSize = 4;
break;
case OperandType.InlineSwitch:
{
uint count = Utilities.ReadUInt32(ILBytes, ILBytesPos + currOpBytesSize);
currOpBytesSize += 4;
operandSize = (int)(count * 4);
}
break;
case OperandType.InlineTok:
operandSize = 4;
break;
case OperandType.InlineType:
operandSize = 4;
break;
case OperandType.InlineVar:
operandSize = 2;
break;
case OperandType.ShortInlineBrTarget:
operandSize = 1;
break;
case OperandType.ShortInlineI:
operandSize = 1;
break;
case OperandType.ShortInlineR:
operandSize = 4;
break;
case OperandType.ShortInlineVar:
operandSize = 1;
break;
default:
throw new Exception("Unrecognised operand type!");
#endregion
}
MethodBase methodToCall = null;
byte[] valueBytes = new byte[operandSize];
if (operandSize > 0)
{
Array.Copy(ILBytes, ILBytesPos + currOpBytesSize, valueBytes, 0, operandSize);
if (currOpCode.Equals(OpCodes.Call) ||
currOpCode.Equals(OpCodes.Calli) ||
currOpCode.Equals(OpCodes.Callvirt) ||
currOpCode.Equals(OpCodes.Ldftn) ||
currOpCode.Equals(OpCodes.Newobj))
{
int MethodMetadataToken = Utilities.ReadInt32(valueBytes, 0);
methodToCall = aMethodInfo.UnderlyingInfo.Module.ResolveMethod(MethodMetadataToken);
}
}
result.ILOps.Add(new ILOp()
{
opCode = currOpCode,
Offset = ILBytesPos,
BytesSize = currOpBytesSize + operandSize,
ValueBytes = valueBytes,
MethodToCall = methodToCall
});
ILBytesPos += currOpBytesSize + operandSize;
}
foreach (ExceptionHandlingClause aClause in methodBody.ExceptionHandlingClauses)
{
ExceptionHandledBlock exBlock = result.GetExactExceptionHandledBlock(aClause.TryOffset);
if (exBlock == null)
{
exBlock = new ExceptionHandledBlock();
exBlock.Offset = aClause.TryOffset;
exBlock.Length = aClause.TryLength;
result.ExceptionHandledBlocks.Add(exBlock);
}
switch (aClause.Flags)
{
case ExceptionHandlingClauseOptions.Fault:
case ExceptionHandlingClauseOptions.Clause:
{
CatchBlock catchBlock = new CatchBlock()
{
Offset = aClause.HandlerOffset,
Length = aClause.HandlerLength,
//Though not used, we may as well set it anyway
FilterType = aClause.CatchType
};
exBlock.CatchBlocks.Add(catchBlock);
}
break;
case ExceptionHandlingClauseOptions.Finally:
{
FinallyBlock finallyBlock = new FinallyBlock()
{
Offset = aClause.HandlerOffset,
Length = aClause.HandlerLength
};
exBlock.FinallyBlocks.Add(finallyBlock);
}
break;
default:
Logger.LogError("IL0010", "", 0,
"Exception handling clause not supported! Type: " + aClause.Flags.ToString());
break;
}
}
}
return(result);
}
/// <summary>
/// Scans the specified non-plugged IL block.
/// </summary>
/// <param name="TheLibrary">The library currently being compiled.</param>
/// <param name="theMethodInfo">The method which generated the IL block.</param>
/// <param name="theILBlock">The IL block to scan.</param>
/// <returns>CompileResult.OK.</returns>
private static CompileResult ScanNonpluggedILBlock(ILLibrary TheLibrary, Types.MethodInfo theMethodInfo, ILBlock theILBlock)
{
CompileResult result = CompileResult.OK;
ASM.ASMBlock TheASMBlock = new ASM.ASMBlock()
{
OriginMethodInfo = theMethodInfo,
Priority = theMethodInfo.Priority
};
ILConversionState convState = new ILConversionState()
{
TheILLibrary = TheLibrary,
CurrentStackFrame = new StackFrame(),
Input = theILBlock,
Result = TheASMBlock
};
foreach (ILOp anOp in theILBlock.ILOps)
{
try
{
string commentText = TheASMBlock.GenerateILOpLabel(convState.PositionOf(anOp), "") + " -- " + anOp.opCode.ToString() + " -- Offset: " + anOp.Offset.ToString("X2");
ASM.ASMOp newCommentOp = TargetArchitecture.CreateASMOp(ASM.OpCodes.Comment, commentText);
TheASMBlock.ASMOps.Add(newCommentOp);
int currCount = TheASMBlock.ASMOps.Count;
if (anOp is ILOps.MethodStart)
{
TargetArchitecture.MethodStartOp.Convert(convState, anOp);
}
else if (anOp is ILOps.MethodEnd)
{
TargetArchitecture.MethodEndOp.Convert(convState, anOp);
}
else if (anOp is ILOps.StackSwitch)
{
TargetArchitecture.StackSwitchOp.Convert(convState, anOp);
}
else
{
ILOp ConverterOp = TargetArchitecture.TargetILOps[(ILOp.OpCodes)anOp.opCode.Value];
ConverterOp.Convert(convState, anOp);
}
if (anOp.LabelRequired)
{
if (currCount < TheASMBlock.ASMOps.Count)
{
TheASMBlock.ASMOps[currCount].ILLabelPosition = convState.PositionOf(anOp);
TheASMBlock.ASMOps[currCount].RequiresILLabel = true;
}
}
}
catch (KeyNotFoundException)
{
result = CompileResult.PartialFailure;
Logger.LogError(Errors.ILCompiler_ScanILOpFailure_ErrorCode, theMethodInfo.ToString(), anOp.Offset,
string.Format(Errors.ErrorMessages[Errors.ILCompiler_ScanILOpFailure_ErrorCode], "Conversion IL op not found: " + Enum.GetName(typeof(ILOp.OpCodes), anOp.opCode.Value) + "."));
}
catch (InvalidOperationException)
{
result = CompileResult.PartialFailure;
Logger.LogError(Errors.ILCompiler_ScanILOpFailure_ErrorCode, theMethodInfo.ToString(), anOp.Offset,
string.Format(Errors.ErrorMessages[Errors.ILCompiler_ScanILOpFailure_ErrorCode], Enum.GetName(typeof(ILOp.OpCodes), anOp.opCode.Value)));
}
catch (NotSupportedException ex)
{
result = CompileResult.PartialFailure;
Logger.LogError(Errors.ILCompiler_ScanILOpFailure_ErrorCode, theMethodInfo.ToString(), anOp.Offset,
string.Format(Errors.ErrorMessages[Errors.ILCompiler_ScanILOpFailure_ErrorCode], "An IL op reported something as not supported. " + Enum.GetName(typeof(ILOp.OpCodes), anOp.opCode.Value) + ". " + ex.Message));
}
catch (Exception ex)
{
result = CompileResult.Fail;
Logger.LogError(Errors.ILCompiler_ScanILOpFailure_ErrorCode, theMethodInfo.ToString(), anOp.Offset,
string.Format(Errors.ErrorMessages[Errors.ILCompiler_ScanILOpFailure_ErrorCode], ex.Message));
}
}
TheLibrary.TheASMLibrary.ASMBlocks.Add(TheASMBlock);
return(result);
}
