public void Analyse()
{
var toAnalyse = new List <ILGroup>(StructuredCode);
while (toAnalyse.Count != 0)
{
var analysing = toAnalyse.First(g => g.StartStack != null);
toAnalyse.Remove(analysing);
var stack = new Stack <Type>(analysing.StartStack.Reverse());
uint stackOffset = 0;
foreach (var item in stack)
{
stackOffset += ILOp.Align(ILOp.SizeOfType(item), 4);
}
foreach (var opcode in analysing.OpCodes)
{
if (opcode.CurrentExceptionRegion != null && opcode.CurrentExceptionRegion.TryOffset == opcode.Position)
{
analysing.PossibleContinuations.First(c => c.StartPosition == opcode.CurrentExceptionRegion.HandlerOffset).StartStack = new Stack <Type>(analysing.StartStack.Reverse());
}
opcode.DoStackAnalysis(stack, ref stackOffset);
}
foreach (var c in analysing.PossibleContinuations)
{
c.StartStack = new Stack <Type>(stack.Reverse());
}
}
}
public override void AssembleNew(Cosmos.Assembler.Assembler aAssembler, object aMethodInfo)
{
// method signature: $this, object @object, IntPtr method
var xAssembler = aAssembler;
var xMethodInfo = (_MethodInfo)aMethodInfo;
XS.Comment("Save target ($this) to field");
XS.Comment("-- ldarg 0");
Ldarg.DoExecute(xAssembler, xMethodInfo, 0);
XS.Comment("-- ldarg 1");
Ldarg.DoExecute(xAssembler, xMethodInfo, 1);
XS.Comment("-- stfld _target");
Stfld.DoExecute(xAssembler, xMethodInfo, "System.Object System.Delegate._target", xMethodInfo.MethodBase.DeclaringType, true, false);
XS.Comment("Save method pointer to field");
XS.Comment("-- ldarg 0");
Ldarg.DoExecute(xAssembler, xMethodInfo, 0);
XS.Comment("-- ldarg 2");
Ldarg.DoExecute(xAssembler, xMethodInfo, 2);
XS.Comment("-- stfld _methodPtr");
Stfld.DoExecute(xAssembler, xMethodInfo, "System.IntPtr System.Delegate._methodPtr", xMethodInfo.MethodBase.DeclaringType, true, false);
XS.Comment("Saving ArgSize to field");
uint xSize = 0;
foreach (var xArg in xMethodInfo.MethodBase.DeclaringType.GetMethod("Invoke").GetParameters())
{
xSize += ILOp.Align(ILOp.SizeOfType(xArg.ParameterType), 4);
}
XS.Comment("-- ldarg 0");
Ldarg.DoExecute(xAssembler, xMethodInfo, 0);
XS.Comment("-- push argsize");
XS.Push(xSize);
XS.Comment("-- stfld ArgSize");
Stfld.DoExecute(xAssembler, xMethodInfo, "$$ArgSize$$", xMethodInfo.MethodBase.DeclaringType, true, false);
}
public override void Execute(MethodInfo aMethod, ILOpCode aOpCode)
{
// todo: implement exception support.
var xSize = SizeOfType(aOpCode.StackPopTypes[0]);
new CPUx86.Add
{
DestinationReg = CPUx86.Registers.ESP,
SourceValue = ILOp.Align((uint)xSize, 4)
};
}
public override void Execute(MethodInfo aMethod, ILOpCode aOpCode)
{
var xStackContent = aOpCode.StackPopTypes[0];
var xStackContentSize = SizeOfType(xStackContent);
var xStackContent2 = aOpCode.StackPopTypes[1];
var xStackContent2Size = SizeOfType(xStackContent2);
var xSize = Math.Max(xStackContentSize, xStackContent2Size);
if (ILOp.Align(xStackContentSize, 4u) != ILOp.Align(xStackContent2Size, 4u))
{
throw new NotSupportedException("Cosmos.IL2CPU.x86->IL->And.cs->Error: Operands have different size!");
}
if (xSize > 8)
{
throw new NotImplementedException("Cosmos.IL2CPU.x86->IL->And.cs->Error: StackSize > 8 not supported");
}
if (xSize > 4)
{
// [ESP] is low part
// [ESP + 4] is high part
// [ESP + 8] is low part
// [ESP + 12] is high part
new CPUx86.Pop {
DestinationReg = CPUx86.Registers.EAX
};
new CPUx86.Pop {
DestinationReg = CPUx86.Registers.EDX
};
// [ESP] is low part
// [ESP + 4] is high part
new CPUx86.And {
DestinationReg = CPUx86.Registers.ESP, DestinationIsIndirect = true, SourceReg = CPUx86.Registers.EAX
};
new CPUx86.And {
DestinationReg = CPUx86.Registers.ESP, DestinationIsIndirect = true, DestinationDisplacement = 4, SourceReg = CPUx86.Registers.EDX
};
}
else
{
new CPUx86.Pop {
DestinationReg = CPUx86.Registers.EAX
};
new CPUx86.And {
DestinationReg = CPUx86.Registers.ESP, DestinationIsIndirect = true, SourceReg = CPUx86.Registers.EAX
};
}
}
public override void AssembleNew(Cosmos.Assembler.Assembler aAssembler, object aMethodInfo)
{
// method signature: $this, object @object, IntPtr method
var xMethodInfo = (MethodInfo)aMethodInfo;
var xAssembler = (NewAssembler)aAssembler;
new Comment("Save target ($this) to field");
new Comment("-- ldarg 0");
Ldarg.DoExecute(xAssembler, xMethodInfo, 0);
//Ldarg.DoExecute(xAssembler, xMethodInfo, 0);
new Comment("-- ldarg 1");
Ldarg.DoExecute(xAssembler, xMethodInfo, 1);
new Comment("-- stfld _target");
Stfld.DoExecute(xAssembler, xMethodInfo, "System.Object System.Delegate._target", xMethodInfo.MethodBase.DeclaringType, true, false);
new Comment("Save method pointer to field");
//Ldarg.DoExecute(xAssembler, xMethodInfo, 0);
new Comment("-- ldarg 0");
Ldarg.DoExecute(xAssembler, xMethodInfo, 0);
new Comment("-- ldarg 2");
Ldarg.DoExecute(xAssembler, xMethodInfo, 2);
new Comment("-- stfld _methodPtr");
Stfld.DoExecute(xAssembler, xMethodInfo, "System.IntPtr System.Delegate._methodPtr", xMethodInfo.MethodBase.DeclaringType, true, false);
new Comment("Saving ArgSize to field");
uint xSize = 0;
foreach (var xArg in xMethodInfo.MethodBase.DeclaringType.GetMethod("Invoke").GetParameters())
{
xSize += ILOp.Align(ILOp.SizeOfType(xArg.ParameterType), 4);
}
new Comment("-- ldarg 0");
Ldarg.DoExecute(xAssembler, xMethodInfo, 0);
if (xMethodInfo.MethodBase.DeclaringType.FullName.Contains("InterruptDelegate"))
{
Console.Write("");
}
new Comment("-- push argsize");
new CPUx86.Push {
DestinationValue = xSize
};
new Comment("-- stfld ArgSize");
Stfld.DoExecute(xAssembler, xMethodInfo, "$$ArgSize$$", xMethodInfo.MethodBase.DeclaringType, true, false);
//public static void Ctor(Delegate aThis, object aObject, IntPtr aMethod,
//[FieldAccess(Name = "System.Object System.Delegate._target")] ref object aFldTarget,
//[FieldAccess(Name = "System.IntPtr System.Delegate._methodPtr")] ref IntPtr aFldMethod) {
}
public override void Execute(_MethodInfo aMethod, ILOpCode aOpCode)
{
var xStackContent = aOpCode.StackPopTypes[0];
var xStackContentSecond = aOpCode.StackPopTypes[1];
var xStackContentSize = SizeOfType(xStackContent);
var xStackContentSecondSize = SizeOfType(xStackContentSecond);
var xSize = Math.Max(xStackContentSize, xStackContentSecondSize);
if (ILOp.Align(xStackContentSize, 4u) != ILOp.Align(xStackContentSecondSize, 4u))
{
throw new NotSupportedException("Operands have different size!");
}
if (xSize > 8)
{
throw new NotImplementedException("StackSize>8 not supported");
}
if (xSize > 4)
{
// [ESP] is low part
// [ESP + 4] is high part
// [ESP + 8] is low part
// [ESP + 12] is high part
XS.Pop(XSRegisters.EAX);
XS.Pop(XSRegisters.EDX);
// [ESP] is low part
// [ESP + 4] is high part
XS.Or(XSRegisters.ESP, XSRegisters.EAX, destinationIsIndirect: true);
XS.Or(XSRegisters.ESP, XSRegisters.EDX, destinationDisplacement: 4);
}
else
{
XS.Pop(XSRegisters.EAX);
XS.Or(XSRegisters.ESP, XSRegisters.EAX, destinationIsIndirect: true);
}
}
public static void DoExecute(Cosmos.Assembler.Assembler Assembler, Type aDeclaringType, string xFieldId, bool aDerefExternalField, bool debugEnabled)
{
var xOffset = GetFieldOffset(aDeclaringType, xFieldId);
var xFields = GetFieldsInfo(aDeclaringType);
var xFieldInfo = (from item in xFields
where item.Id == xFieldId
select item).Single();
new Comment("Field = '" + xFieldId + "'");
DoNullReferenceCheck(Assembler, debugEnabled, 0);
new CPUx86.Pop {
DestinationReg = CPUx86.Registers.ECX
};
#if DOTNETCOMPATIBLE
// pushed size is always 4 or 8
var xSize = ILOp.Align(xFieldInfo.Size, 4);
#else
var xSize = xFieldInfo.Size;
#endif
new CPUx86.Add {
DestinationReg = CPUx86.Registers.ECX, SourceValue = (uint)(xOffset)
};
if (xFieldInfo.IsExternalValue && aDerefExternalField)
{
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.ECX, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true
};
}
for (int i = 1; i <= (xSize / 4); i++)
{
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true, SourceDisplacement = (int)(xSize - (i * 4))
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EAX
};
}
switch (xSize % 4)
{
case 1: {
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 0
};
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.AL, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EAX
};
break;
}
case 2: {
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 0
};
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.AX, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EAX
};
break;
}
case 3: //For Release
{
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 0
};
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true
};
new CPUx86.ShiftRight {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 8
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EAX
};
break;
}
case 0: {
break;
}
default:
throw new Exception(string.Format("Remainder size {0:D} {1:D} not supported!", xFieldInfo.FieldType.ToString(), xSize));
}
}
public static void DoExecute(Cosmos.Assembler.Assembler Assembler, Type aDeclaringType, string xFieldId, bool aDerefExternalField, bool debugEnabled, Type aTypeOnStack)
{
var xOffset = GetFieldOffset(aDeclaringType, xFieldId);
var xFields = GetFieldsInfo(aDeclaringType, false);
var xFieldInfo = (from item in xFields
where item.Id == xFieldId
select item).Single();
new Comment("Field: " + xFieldInfo.Id);
new Comment("Type: " + xFieldInfo.FieldType.ToString());
new Comment("Size: " + xFieldInfo.Size);
new Comment("Offset: " + xOffset + " (includes object header)");
if (aDeclaringType.IsValueType && aTypeOnStack == aDeclaringType)
{
// the full struct is on the stack, instead of only a pointer to it
if (xFieldInfo.Size > 4)
{
throw new Exception("For now, loading fields with sizes > 4 bytes from structs on the stack is not possible!");
}
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 0
};
switch (xFieldInfo.Size)
{
case 1:
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.AL, SourceReg = CPUx86.Registers.ESP, SourceDisplacement = xOffset, SourceIsIndirect = true
};
break;
case 2:
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.AX, SourceReg = CPUx86.Registers.ESP, SourceDisplacement = xOffset, SourceIsIndirect = true
};
break;
case 3: //For Release
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.ESP, SourceDisplacement = xOffset, SourceIsIndirect = true
};
new CPUx86.ShiftRight {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 8
};
break;
case 4:
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.ESP, SourceDisplacement = xOffset, SourceIsIndirect = true
};
break;
default:
throw new Exception(string.Format("Field size {0} not supported!", xFieldInfo.Size));
}
// now remove the struct from the stack
new CPUx86.Add {
DestinationReg = CPUx86.Registers.ESP, SourceValue = Align(GetStorageSize(aDeclaringType), 4)
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EAX
};
return;
}
DoNullReferenceCheck(Assembler, debugEnabled, 0);
new CPUx86.Pop {
DestinationReg = CPUx86.Registers.ECX
};
#if DOTNETCOMPATIBLE
// pushed size is always 4 or 8
var xSize = ILOp.Align(xFieldInfo.Size, 4);
#else
var xSize = xFieldInfo.Size;
#endif
new CPUx86.Add {
DestinationReg = CPUx86.Registers.ECX, SourceValue = (uint)(xOffset)
};
if (xFieldInfo.IsExternalValue && aDerefExternalField)
{
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.ECX, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true
};
}
for (int i = 1; i <= (xSize / 4); i++)
{
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true, SourceDisplacement = (int)(xSize - (i * 4))
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EAX
};
}
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 0
};
switch (xSize % 4)
{
case 1:
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.AL, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EAX
};
break;
case 2:
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.AX, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EAX
};
break;
case 3: //For Release
new CPUx86.Mov {
DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true
};
new CPUx86.ShiftRight {
DestinationReg = CPUx86.Registers.EAX, SourceValue = 8
};
new CPUx86.Push {
DestinationReg = CPUx86.Registers.EAX
};
break;
case 0:
{
break;
}
default:
throw new Exception(string.Format("Remainder size {0:D} {1:D} not supported!", xFieldInfo.FieldType.ToString(), xSize));
}
}
