示例#1
0
        public static unsafe void Throw(FlingOops.Exception ex)
        {
            FlingOops.GC.IncrementRefCount(ex);

            BasicConsole.WriteLine("Exception thrown");
            BasicConsole.WriteLine(ex.Message);

            if (State->CurrentHandlerPtr->Ex != null)
            {
                //GC ref count remains consistent because the Ex pointer below is going to be replaced but
                //  same pointer stored in InnerException.
                // Result is ref count goes: +1 here, -1 below
                ex.InnerException = (FlingOops.Exception)Utilities.ObjectUtilities.GetObject(State->CurrentHandlerPtr->Ex);
            }
            if (ex.InstructionAddress == 0)
            {
                ex.InstructionAddress = *((uint *)BasePointer + 1);
            }
            State->CurrentHandlerPtr->Ex        = Utilities.ObjectUtilities.GetHandle(ex);
            State->CurrentHandlerPtr->ExPending = 1;

            HandleException();

            // We never expect to get here...
            HaltReason = "HandleException returned!";
            BasicConsole.WriteLine(HaltReason);
            // Try to cause fault
            *((byte *)0xDEADBEEF) = 0;
        }
示例#2
0
 public static void Throw_IndexOutOfRangeException()
 {
     HaltReason = "Index out of range exception.";
     BasicConsole.WriteLine(HaltReason);
     //FlingOops.Exception ex = new FlingOops.Exceptions.IndexOutOfRangeException(0, 0);
     //ex.InstructionAddress = *((uint*)BasePointer + 1);
     //Throw(ex);
 }
示例#3
0
        public static void *NewObj(FlingOops.Type theType)
        {
            if (!Enabled)
            {
                BasicConsole.SetTextColour(BasicConsole.warning_colour);
                BasicConsole.WriteLine("Warning! GC returning null pointer because GC not enabled.");
                BasicConsole.DelayOutput(10);
                BasicConsole.SetTextColour(BasicConsole.default_colour);

                return(null);
            }

            //try
            //{
            InsideGC = true;

            //Alloc space for GC header that prefixes object data
            //Alloc space for new object

            uint totalSize = theType.Size;

            totalSize += (uint)sizeof(GCHeader);

            GCHeader *newObjPtr = (GCHeader *)Heap.AllocZeroed(totalSize, "GC : NewObject");

            if ((UInt32)newObjPtr == 0)
            {
                InsideGC = false;

                BasicConsole.SetTextColour(BasicConsole.error_colour);
                BasicConsole.WriteLine("Error! GC can't create a new object because the heap returned a null pointer.");
                BasicConsole.DelayOutput(10);
                BasicConsole.SetTextColour(BasicConsole.default_colour);

                return(null);
            }

            NumObjs++;

            //Initialise the GCHeader
            SetSignature(newObjPtr);
            newObjPtr->RefCount = 1;
            //Initialise the object _Type field
            FlingOops.ObjectWithType newObj = (FlingOops.ObjectWithType)Utilities.ObjectUtilities.GetObject(newObjPtr + 1);
            newObj._Type = theType;

            //Move past GCHeader
            byte *newObjBytePtr = (byte *)(newObjPtr + 1);

            InsideGC = false;

            return(newObjBytePtr);
            //}
            //finally
            //{
            //}
        }
示例#4
0
        public static void Throw_NullReferenceException(uint address)
        {
            HaltReason = "Null reference exception. Instruction: 0x        ";
            FillString(address, 48, HaltReason);
            BasicConsole.WriteLine(HaltReason);

            //FlingOops.Exception ex = new FlingOops.Exceptions.NullReferenceException();
            //ex.InstructionAddress = address;
            //Throw(ex);
        }
示例#5
0
        public static unsafe void HandleEndFinally()
        {
            if (State == null ||
                State->CurrentHandlerPtr == null)
            {
                // If we get to here, it's an unhandled exception
                HaltReason = "Cannot end finally on null handler!";
                BasicConsole.WriteLine(HaltReason);
                BasicConsole.DelayOutput(5);

                // Try to cause fault
                *((byte *)0xDEADBEEF) = 0;
            }

            // Leaving a "finally" critical section cleanly
            // We need to handle 2 cases:
            // Case 1 : Pending exception
            // Case 2 : No pending exception

            if (State->CurrentHandlerPtr->ExPending != 0)
            {
                // Case 1 : Pending exception

                //BasicConsole.WriteLine("End finally with ex");

                HandleException();
            }
            else
            {
                // Case 2 : No pending exception

                //BasicConsole.WriteLine("End finally without ex");

                State->CurrentHandlerPtr->InHandler = 0;

                uint  EBP     = State->CurrentHandlerPtr->EBP;
                uint  ESP     = State->CurrentHandlerPtr->ESP;
                byte *retAddr = State->CurrentHandlerPtr->HandlerAddress;//(byte*)*((uint*)(BasePointer + 4));

                //BasicConsole.Write("Continue ptr (from HandlerAddress): ");
                //BasicConsole.WriteLine((uint)State->CurrentHandlerPtr->HandlerAddress);
                //BasicConsole.Write("Actual continue addr (from EBP): ");
                //BasicConsole.WriteLine(*((uint*)(BasePointer + 4)));

                State->CurrentHandlerPtr = State->CurrentHandlerPtr->PrevHandlerPtr;

                ArbitaryReturn(EBP,
                               ESP + (uint)sizeof(ExceptionHandlerInfo),
                               retAddr);
            }
        }
示例#6
0
 public static unsafe FlingOops.String New(int length)
 {
     if (length < 0)
     {
         BasicConsole.WriteLine("ArgumentException! String.New, length less than zero.");
         ExceptionMethods.Throw(new Exception("Parameter \"length\" cannot be less than 0 in FlingOops.String.New(int length)."));
     }
     FlingOops.String result = (FlingOops.String)Utilities.ObjectUtilities.GetObject(GC.NewString(length));
     if (result == null)
     {
         BasicConsole.WriteLine("NullReferenceException! String.New, result is null.");
         ExceptionMethods.Throw(new Exception());
     }
     return(result);
 }
示例#7
0
        public static unsafe void HandleException()
        {
            //BasicConsole.WriteLine("Handle exception");

            if (State != null)
            {
                if (State->CurrentHandlerPtr != null)
                {
                    if (State->CurrentHandlerPtr->InHandler != 0)
                    {
                        State->CurrentHandlerPtr->InHandler = 0;
                        if (State->CurrentHandlerPtr->PrevHandlerPtr != null)
                        {
                            State->CurrentHandlerPtr->PrevHandlerPtr->Ex        = State->CurrentHandlerPtr->Ex;
                            State->CurrentHandlerPtr->PrevHandlerPtr->ExPending = State->CurrentHandlerPtr->ExPending;
                        }
                        State->CurrentHandlerPtr = State->CurrentHandlerPtr->PrevHandlerPtr;
                    }
                }

                ExceptionHandlerInfo *CurrHandlerPtr = State->CurrentHandlerPtr;
                if (CurrHandlerPtr != null)
                {
                    if ((uint)CurrHandlerPtr->HandlerAddress != 0x00000000u)
                    {
                        if ((uint)CurrHandlerPtr->FilterAddress != 0x00000000u)
                        {
                            //Catch handler
                            CurrHandlerPtr->ExPending = 0;
                        }

                        CurrHandlerPtr->InHandler = 1;

                        ArbitaryReturn(CurrHandlerPtr->EBP, CurrHandlerPtr->ESP, CurrHandlerPtr->HandlerAddress);
                    }
                }
            }

            // If we get to here, it's an unhandled exception
            HaltReason = "Unhandled / improperly handled exception!";
            BasicConsole.WriteLine(HaltReason);
            // Try to cause fault
            *((byte *)0xDEADBEEF) = 0;
        }
示例#8
0
文件: Kernel.cs 项目: zrbruce/FlingOS
        public static void Main()
        {
#if MIPS
            FlingOops.MIPS.CI20.Kernel.Start();
#elif x86
            FlingOops.x86.Kernel.Start();
#endif

            BasicConsole.Init();
            BasicConsole.WriteLine("Kernel executing...");

            CompilerTests.RunTests();

#if MIPS
            FlingOops.MIPS.CI20.Kernel.End();
#elif x86
            FlingOops.x86.Kernel.End();
#endif
        }
示例#9
0
        public static void _IncrementRefCount(byte *objPtr)
        {
            if ((uint)objPtr < (uint)sizeof(GCHeader))
            {
                BasicConsole.SetTextColour(BasicConsole.error_colour);
                BasicConsole.WriteLine("Error! GC can't increment ref count of an object in low memory.");
                BasicConsole.DelayOutput(5);
                BasicConsole.SetTextColour(BasicConsole.default_colour);
            }

            objPtr -= sizeof(GCHeader);
            GCHeader *gcHeaderPtr = (GCHeader *)objPtr;

            if (CheckSignature(gcHeaderPtr))
            {
                gcHeaderPtr->RefCount++;

                if (gcHeaderPtr->RefCount > 0)
                {
                    RemoveObjectToCleanup(gcHeaderPtr);
                }
            }
        }
示例#10
0
        public static void *Alloc(UInt32 size, UInt32 boundary, FlingOops.String caller)
        {
#if HEAP_TRACE
            BasicConsole.SetTextColour(BasicConsole.warning_colour);
            BasicConsole.WriteLine("Attempt to alloc mem....");
            BasicConsole.SetTextColour(BasicConsole.default_colour);
#endif
            HeapBlock *b;
            byte *     bm;
            UInt32     bcnt;
            UInt32     x, y, z;
            UInt32     bneed;
            byte       nid;

#if MIPS
            if (boundary < 4)
            {
                boundary = 4;
            }
#endif

            if (boundary > 1)
            {
                size += (boundary - 1);
            }

            /* iterate blocks */
            for (b = fblock; (UInt32)b != 0; b = b->next)
            {
                /* check if block has enough room */
                if (b->size - (b->used * b->bsize) >= size)
                {
                    bcnt  = b->size / b->bsize;
                    bneed = (size / b->bsize) * b->bsize < size ? size / b->bsize + 1 : size / b->bsize;
                    bm    = (byte *)&b[1];

                    for (x = (b->lfb + 1 >= bcnt ? 0 : b->lfb + 1); x != b->lfb; ++x)
                    {
                        /* just wrap around */
                        if (x >= bcnt)
                        {
                            x = 0;
                        }

                        if (bm[x] == 0)
                        {
                            /* count free blocks */
                            for (y = 0; bm[x + y] == 0 && y < bneed && (x + y) < bcnt; ++y)
                            {
                                ;
                            }

                            /* we have enough, now allocate them */
                            if (y == bneed)
                            {
                                /* find ID that does not match left or right */
                                nid = GetNID(bm[x - 1], bm[x + y]);

                                /* allocate by setting id */
                                for (z = 0; z < y; ++z)
                                {
                                    bm[x + z] = nid;
                                }

                                /* optimization */
                                b->lfb = (x + bneed) - 2;

                                /* count used blocks NOT bytes */
                                b->used += y;

                                void *result = (void *)(x * b->bsize + (UInt32)(&b[1]));
                                if (boundary > 1)
                                {
                                    result = (void *)((((UInt32)result) + (boundary - 1)) & ~(boundary - 1));

#if HEAP_TRACE
                                    ExitCritical();
                                    BasicConsole.WriteLine(((FlingOops.String) "Allocated address ") + (uint)result + " on boundary " + boundary + " for " + caller);
                                    EnterCritical("Alloc:Boundary condition");
#endif
                                }

                                return(result);
                            }

                            /* x will be incremented by one ONCE more in our FOR loop */
                            x += (y - 1);
                            continue;
                        }
                    }
                }
            }

#if HEAP_TRACE
            BasicConsole.SetTextColour(BasicConsole.error_colour);
            BasicConsole.WriteLine("!!Heap out of memory!!");
            BasicConsole.SetTextColour(BasicConsole.default_colour);
            BasicConsole.DelayOutput(2);
#endif

            return(null);
        }
示例#11
0
        public static void _DecrementRefCount(byte *objPtr)
        {
            if ((uint)objPtr < (uint)sizeof(GCHeader))
            {
                BasicConsole.SetTextColour(BasicConsole.error_colour);
                BasicConsole.WriteLine("Error! GC can't decrement ref count of an object in low memory.");
                BasicConsole.DelayOutput(5);
                BasicConsole.SetTextColour(BasicConsole.default_colour);
            }

            GCHeader *gcHeaderPtr = (GCHeader *)(objPtr - sizeof(GCHeader));

            if (CheckSignature(gcHeaderPtr))
            {
                gcHeaderPtr->RefCount--;

                //If the ref count goes below 0 then there was a circular reference somewhere.
                //  In actuality we don't care we can just only do cleanup when the ref count is
                //  exactly 0.
                if (gcHeaderPtr->RefCount == 0)
                {
#if GC_TRACE
                    BasicConsole.WriteLine("Cleaning up object...");
#endif

                    FlingOops.Object obj = (FlingOops.Object)Utilities.ObjectUtilities.GetObject(objPtr);
                    if (obj is FlingOops.Array)
                    {
                        //Decrement ref count of elements
                        FlingOops.Array arr = (FlingOops.Array)obj;
                        if (!arr.elemType.IsValueType)
                        {
                            FlingOops.Object[] objArr = (FlingOops.Object[])Utilities.ObjectUtilities.GetObject(objPtr);
                            for (int i = 0; i < arr.length; i++)
                            {
                                DecrementRefCount(objArr[i], true);
                            }
                        }
                    }
                    //Cleanup fields
                    FieldInfo *FieldInfoPtr = obj._Type.FieldTablePtr;
                    //Loop through all fields. The if-block at the end handles moving to parent
                    //  fields.
                    while (FieldInfoPtr != null)
                    {
                        if (FieldInfoPtr->Size > 0)
                        {
                            FlingOops.Type fieldType = (FlingOops.Type)Utilities.ObjectUtilities.GetObject(FieldInfoPtr->FieldType);
                            if (!fieldType.IsValueType &&
                                !fieldType.IsPointer)
                            {
                                byte *           fieldPtr    = objPtr + FieldInfoPtr->Offset;
                                FlingOops.Object theFieldObj = (FlingOops.Object)Utilities.ObjectUtilities.GetObject(fieldPtr);

                                DecrementRefCount(theFieldObj, true);

#if GC_TRACE
                                BasicConsole.WriteLine("Cleaned up field.");
#endif
                            }

                            FieldInfoPtr++;
                        }

                        if (FieldInfoPtr->Size == 0)
                        {
                            FieldInfoPtr = (FieldInfo *)FieldInfoPtr->FieldType;
                        }
                    }

#if GC_TRACE
                    BasicConsole.WriteLine("Adding object to clean up...");
#endif
                    AddObjectToCleanup(gcHeaderPtr, objPtr);

#if GC_TRACE
                    BasicConsole.WriteLine("Completed decrement ref count processing.");
#endif
                }
            }
        }
示例#12
0
        public static void *NewString(int length)
        {
            if (!Enabled)
            {
                BasicConsole.SetTextColour(BasicConsole.warning_colour);
                BasicConsole.WriteLine("Warning! GC returning null pointer because GC not enabled.");
                BasicConsole.DelayOutput(10);
                BasicConsole.SetTextColour(BasicConsole.default_colour);

                return(null);
            }

            //try
            {
                if (length < 0)
                {
                    BasicConsole.SetTextColour(BasicConsole.error_colour);
                    BasicConsole.WriteLine("Error! GC can't create a new string because \"length\" is less than 0.");
                    BasicConsole.DelayOutput(5);
                    BasicConsole.SetTextColour(BasicConsole.default_colour);

                    return(null);
                    //ExceptionMethods.Throw_OverflowException();
                }

                InsideGC = true;

                //Alloc space for GC header that prefixes object data
                //Alloc space for new string object
                //Alloc space for new string chars

                uint totalSize = ((FlingOops.Type) typeof(FlingOops.String)).Size;
                totalSize += /*char size in bytes*/ 2 * (uint)length;
                totalSize += (uint)sizeof(GCHeader);

                GCHeader *newObjPtr = (GCHeader *)Heap.AllocZeroed(totalSize, "GC : NewString");

                if ((UInt32)newObjPtr == 0)
                {
                    InsideGC = false;

                    BasicConsole.SetTextColour(BasicConsole.error_colour);
                    BasicConsole.WriteLine("Error! GC can't create a new string because the heap returned a null pointer.");
                    BasicConsole.DelayOutput(10);
                    BasicConsole.SetTextColour(BasicConsole.default_colour);

                    return(null);
                }

                NumObjs++;
                NumStrings++;

                //Initialise the GCHeader
                SetSignature(newObjPtr);
                //RefCount to 0 initially because of FlingOops.String.New should be used
                //      - In theory, New should be called, creates new string and passes it back to caller
                //        Caller is then required to store the string in a variable resulting in inc.
                //        ref count so ref count = 1 in only stored location.
                //        Caller is not allowed to just "discard" (i.e. use Pop IL op or C# that generates
                //        Pop IL op) so ref count will always at some point be incremented and later
                //        decremented by managed code. OR the variable will stay in a static var until
                //        the OS exits...

                newObjPtr->RefCount = 0;

                FlingOops.String newStr = (FlingOops.String)Utilities.ObjectUtilities.GetObject(newObjPtr + 1);
                newStr._Type  = (FlingOops.Type) typeof(FlingOops.String);
                newStr.length = length;

                //Move past GCHeader
                byte *newObjBytePtr = (byte *)(newObjPtr + 1);

                InsideGC = false;

                return(newObjBytePtr);
            }
            //finally
            {
                //ExitCritical();
            }
        }
示例#13
0
        public static void *NewArr(int length, FlingOops.Type elemType)
        {
            if (!Enabled)
            {
                BasicConsole.SetTextColour(BasicConsole.warning_colour);
                BasicConsole.WriteLine("Warning! GC returning null pointer because GC not enabled.");
                BasicConsole.DelayOutput(10);
                BasicConsole.SetTextColour(BasicConsole.default_colour);

                return(null);
            }

            //try
            {
                if (length < 0)
                {
                    BasicConsole.WriteLine("length < 0. Overflow exception.");
                    return(null);
                    //ExceptionMethods.Throw_OverflowException();
                }

                InsideGC = true;

                //Alloc space for GC header that prefixes object data
                //Alloc space for new array object
                //Alloc space for new array elems

                uint totalSize = ((FlingOops.Type) typeof(FlingOops.Array)).Size;
                if (elemType.IsValueType)
                {
                    totalSize += elemType.Size * (uint)length;
                }
                else
                {
                    totalSize += elemType.StackSize * (uint)length;
                }
                totalSize += (uint)sizeof(GCHeader);

                GCHeader *newObjPtr = (GCHeader *)Heap.AllocZeroed(totalSize, "GC : NewArray");

                if ((UInt32)newObjPtr == 0)
                {
                    InsideGC = false;

                    BasicConsole.SetTextColour(BasicConsole.error_colour);
                    BasicConsole.WriteLine("Error! GC can't create a new array because the heap returned a null pointer.");
                    BasicConsole.DelayOutput(10);
                    BasicConsole.SetTextColour(BasicConsole.default_colour);

                    return(null);
                }

                NumObjs++;

                //Initialise the GCHeader
                SetSignature(newObjPtr);
                newObjPtr->RefCount = 1;

                FlingOops.Array newArr = (FlingOops.Array)Utilities.ObjectUtilities.GetObject(newObjPtr + 1);
                newArr._Type    = (FlingOops.Type) typeof(FlingOops.Array);
                newArr.length   = length;
                newArr.elemType = elemType;

                //Move past GCHeader
                byte *newObjBytePtr = (byte *)(newObjPtr + 1);

                InsideGC = false;

                return(newObjBytePtr);
            }
            //finally
            {
            }
        }
示例#14
0
        public static unsafe void AddExceptionHandlerInfo(
            void *handlerPtr,
            void *filterPtr)
        {
            if (State == null)
            {
                BasicConsole.SetTextColour(BasicConsole.error_colour);
                BasicConsole.WriteLine("Error! ExceptionMethods.State is null.");
                BasicConsole.DelayOutput(10);
                BasicConsole.SetTextColour(BasicConsole.default_colour);
            }

            //if (filterPtr != null)
            //{
            //    BasicConsole.WriteLine("Enter try-catch block");
            //}
            //else
            //{
            //    BasicConsole.WriteLine("Enter try-finally block");
            //}

            AddExceptionHandlerInfo_EntryStackState *BasePtr = (AddExceptionHandlerInfo_EntryStackState *)BasePointer;

            uint LocalsSize = (uint)BasePtr - (uint)StackPointer;

            // Create space for setting up handler info
            StackPointer -= sizeof(ExceptionHandlerInfo);

            // Setup handler info
            ExceptionHandlerInfo *ExHndlrPtr = (ExceptionHandlerInfo *)StackPointer;

            ExHndlrPtr->EBP = BasePtr->EBP;
            //                  EBP + 8 (for ret addr, ebp) + 8 (for args) - sizeof(ExceptionHandlerInfo)
            ExHndlrPtr->ESP            = (uint)BasePtr + 8 + 8 - (uint)sizeof(ExceptionHandlerInfo);
            ExHndlrPtr->FilterAddress  = (byte *)filterPtr;
            ExHndlrPtr->HandlerAddress = (byte *)handlerPtr;
            ExHndlrPtr->PrevHandlerPtr = State->CurrentHandlerPtr;
            ExHndlrPtr->InHandler      = 0;
            ExHndlrPtr->ExPending      = 0;
            ExHndlrPtr->Ex             = null;

            State->CurrentHandlerPtr = (ExceptionHandlerInfo *)((byte *)ExHndlrPtr + (LocalsSize + 12));

            StackPointer -= 8; // For duplicate (empty) args
            StackPointer -= 8; // For duplicate ebp, ret addr

            // Setup the duplicate stack data
            //  - Nothing to do for args - duplicate values don't matter
            //  - Copy over ebp and return address
            uint *DuplicateValsStackPointer = (uint *)StackPointer;

            *DuplicateValsStackPointer = BasePtr->EBP;
            *(DuplicateValsStackPointer + 1) = BasePtr->RetAddr;

            ShiftStack((byte *)ExHndlrPtr + sizeof(ExceptionHandlerInfo) - 4, LocalsSize + 12);

            // Shift stack pointer to correct position - eliminates "empty space" of duplicates
            StackPointer += 16;

            // MethodEnd will:
            //      - Add size of locals to esp
            //      - Pop EBP
            //      - Ret to ret address
            // Caller will:
            //      - Add size of args to esp
            // Which should leave the stack at the bottom of the (shifted up) ex handler info
        }
示例#15
0
        public static unsafe void HandleLeave(void *continuePtr)
        {
            if (State == null ||
                State->CurrentHandlerPtr == null)
            {
                // If we get to here, it's an unhandled exception
                HaltReason = "Cannot leave on null handler! Address: 0x        ";

                uint y      = *((uint *)(BasePointer + 4));
                int  offset = 48;
                #region Address
                while (offset > 40)
                {
                    uint rem = y & 0xFu;
                    switch (rem)
                    {
                    case 0:
                        HaltReason[offset] = '0';
                        break;

                    case 1:
                        HaltReason[offset] = '1';
                        break;

                    case 2:
                        HaltReason[offset] = '2';
                        break;

                    case 3:
                        HaltReason[offset] = '3';
                        break;

                    case 4:
                        HaltReason[offset] = '4';
                        break;

                    case 5:
                        HaltReason[offset] = '5';
                        break;

                    case 6:
                        HaltReason[offset] = '6';
                        break;

                    case 7:
                        HaltReason[offset] = '7';
                        break;

                    case 8:
                        HaltReason[offset] = '8';
                        break;

                    case 9:
                        HaltReason[offset] = '9';
                        break;

                    case 10:
                        HaltReason[offset] = 'A';
                        break;

                    case 11:
                        HaltReason[offset] = 'B';
                        break;

                    case 12:
                        HaltReason[offset] = 'C';
                        break;

                    case 13:
                        HaltReason[offset] = 'D';
                        break;

                    case 14:
                        HaltReason[offset] = 'E';
                        break;

                    case 15:
                        HaltReason[offset] = 'F';
                        break;
                    }
                    y >>= 4;
                    offset--;
                }

                #endregion

                BasicConsole.WriteLine(HaltReason);
                BasicConsole.DelayOutput(5);

                // Try to cause fault
                *((byte *)0xDEADBEEF) = 0;
            }

            // Leaving a critical section cleanly
            // We need to handle 2 cases:
            // Case 1 : Leaving "try" or "catch" of a try-catch
            // Case 2 : Leaving the "try" of a try-finally

            if ((uint)State->CurrentHandlerPtr->FilterAddress != 0x0u)
            {
                // Case 1 : Leaving "try" or "catch" of a try-catch

                if (State->CurrentHandlerPtr->Ex != null)
                {
                    FlingOops.GC.DecrementRefCount((FlingOops.Object)Utilities.ObjectUtilities.GetObject(State->CurrentHandlerPtr->Ex));
                    State->CurrentHandlerPtr->Ex = null;
                }

                State->CurrentHandlerPtr->InHandler = 0;

                uint EBP = State->CurrentHandlerPtr->EBP;
                uint ESP = State->CurrentHandlerPtr->ESP;

                //BasicConsole.WriteLine("Leave try or catch of try-catch");
                //BasicConsole.WriteLine((uint)continuePtr);

                State->CurrentHandlerPtr = State->CurrentHandlerPtr->PrevHandlerPtr;

                ArbitaryReturn(EBP, ESP + (uint)sizeof(ExceptionHandlerInfo), (byte *)continuePtr);
            }
            else
            {
                // Case 2 : Leaving the "try" of a try-finally

                State->CurrentHandlerPtr->InHandler = 1;

                byte *handlerAddress = State->CurrentHandlerPtr->HandlerAddress;

                //BasicConsole.WriteLine("Leave try of try-finally");
                //BasicConsole.Write("Handler address: ");
                //BasicConsole.WriteLine((uint)handlerAddress);
                //BasicConsole.Write("Continue ptr: ");
                //BasicConsole.WriteLine((uint)continuePtr);

                State->CurrentHandlerPtr->HandlerAddress = (byte *)continuePtr;

                ArbitaryReturn(State->CurrentHandlerPtr->EBP,
                               State->CurrentHandlerPtr->ESP,
                               handlerAddress);
            }
        }