/// <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 the value to store is floating point or
/// if the value is not 4 or 8 bytes in size.
/// </exception>
public override void Convert(ILConversionState conversionState, ILOp theOp)
{
int metadataToken = Utilities.ReadInt32(theOp.ValueBytes, 0);
FieldInfo theField = conversionState.Input.TheMethodInfo.UnderlyingInfo.Module.ResolveField(metadataToken);
Types.TypeInfo objTypeInfo = conversionState.TheILLibrary.GetTypeInfo(theField.DeclaringType);
Types.TypeInfo fieldTypeInfo = conversionState.TheILLibrary.GetTypeInfo(theField.FieldType);
Types.FieldInfo theFieldInfo = conversionState.TheILLibrary.GetFieldInfo(objTypeInfo, theField.Name);
int offset = theFieldInfo.OffsetInBytes;
int stackSize = fieldTypeInfo.SizeOnStackInBytes;
int memSize = fieldTypeInfo.IsValueType ? fieldTypeInfo.SizeOnHeapInBytes : stackSize;
StackItem value = conversionState.CurrentStackFrame.Stack.Pop();
StackItem objPointer = conversionState.CurrentStackFrame.Stack.Pop();
if (value.isFloat)
{
//SUPPORT - floats
throw new NotSupportedException("Storing fields of type float not supported yet!");
}
//Get object pointer
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = stackSize.ToString() + "($sp)", Dest = "$t2", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg
});
//Pop and mov value
for (int i = 0; i < memSize; i += 2)
{
if (memSize - i == 1)
{
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Halfword, Dest = "$t0"
});
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Byte, Src = "$t0", Dest = (offset + i).ToString() + "($t2)" });
GlobalMethods.StoreData(conversionState, theOp, "$t2", "$t0", (offset + i), 1);
}
else
{
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Halfword, Dest = "$t0"
});
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = "$t0", Dest = (offset + i).ToString() + "($t2)" });
GlobalMethods.StoreData(conversionState, theOp, "$t2", "$t0", (offset + i), 2);
}
}
// Rounds down || Pop object pointer
conversionState.Append(new ASMOps.Add()
{
Src1 = "$sp", Src2 = ((((stackSize - memSize) / 2) * 2) + 4).ToString(), Dest = "$sp"
});
}
/// <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
});
}
/// <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 constant is a floating point number.
/// </exception>
public override void Convert(ILConversionState conversionState, ILOp theOp)
{
Type elementType = null;
//bool pushValue = true;
int sizeToPop = 4;
bool isFloat = false;
int currOpPosition = conversionState.PositionOf(theOp);
conversionState.AddExternalLabel(conversionState.GetThrowNullReferenceExceptionMethodInfo().ID);
conversionState.AddExternalLabel(conversionState.GetThrowIndexOutOfRangeExceptionMethodInfo().ID);
switch ((OpCodes)theOp.opCode.Value)
{
case OpCodes.Stelem:
{
//Load the metadata token used to get the type info
int metadataToken = Utilities.ReadInt32(theOp.ValueBytes, 0);
//Get the type info for the element type
elementType = conversionState.Input.TheMethodInfo.UnderlyingInfo.Module.ResolveType(metadataToken);
}
break;
case OpCodes.Stelem_R4:
case OpCodes.Stelem_R8:
//TODO - Add more StElem op variants support
throw new NotSupportedException("Stelem op variant not supported yet!");
case OpCodes.Stelem_I1:
sizeToPop = 1;
elementType = typeof(sbyte);
break;
case OpCodes.Stelem_I2:
sizeToPop = 2;
elementType = typeof(Int16);
break;
case OpCodes.Stelem_Ref:
elementType = null;
break;
case OpCodes.Stelem_I4:
elementType = typeof(Int32);
break;
case OpCodes.Stelem_I8:
sizeToPop = 8;
elementType = typeof(Int64);
break;
}
if (isFloat)
{
//TODO - Support floats
throw new NotSupportedException("StElem for floats not supported yet!");
}
//Get element from array and push the value onto the stack
// (or for LdElemA push the address of the value)
//This involves:
// 1. Check array reference is not null
// - If it is, throw NullReferenceException
// 2. Check array element type is correct
// - If not, throw ArrayTypeMismatchException
// 3. Check index to get is > -1 and < array length
// - If not, throw IndexOutOfRangeException
// 4. Calculate address of element
// 5. Pop the value from the stack into the element
//Stack setup upon entering this op: (top-most downwards)
// 0. Value to store (word or 2 words)
// 1. Index of element to get as Int32 (word)
// 2. Array object reference as address (word)
Types.TypeInfo arrayTypeInfo = conversionState.GetArrayTypeInfo();
// 1. Check array reference is not null
// 1.1. Move array ref into $t0
// 1.2. Compare $t0 (array ref) to 0
// 1.3. If not zero, jump to continue execution further down
// 1.4. Otherwise, call Exceptions.ThrowNullReferenceException
// 1.1. Move array ref into $t0
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = (sizeToPop == 8 ? 12 : 8).ToString() + "($sp)", Dest = "$t0", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg
});
// 1.2. Compare $t0 (array ref) to 0
// 1.3. If not zero, jump to continue execution further down
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.BranchNotZero, Src1 = "$t0", DestILPosition = currOpPosition, Extension = "Continue1"
});
// 1.4. Otherwise, call Exceptions.Throw1NullReferenceException
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 = "Continue1"
});
// 2. Check array element type is correct
// 2.1. Move element type ref into $t0
// 2.2. Move element type ref from array object into $t1
// 2.3. Compare $t0 to $t1
// 2.4. If the same, jump to continue execution further down
// 2.5. Otherwise, call Exceptions.ThrowArrayTypeMismatchException
//string ContinueExecutionLabel2 = ContinueExecutionLabelBase + "2";
//// 2.1. Move element type ref into $t0
//if (elementType != null)
//{
// result.AppendLine(string.Format("mov $t0, {0}", conversionState.GetTypeIdString(conversionState.GetTypeID(elementType))));
//}
//else
//{
// //Should be the same for all classes since they are (indirectly) derived from ObjectWithType
// int typeOffset = conversionState.GetFieldOffset(arrayDBType, "_Type");
// // - Move value (which is a ref) into $t0
// GlobalMethods.CheckAddrFromRegister(conversionState, "$sp", 0);
// result.AppendLine("mov $t0, 0($sp)");
// // - Move value type ref (from value (ref)) into $t0
// GlobalMethods.CheckAddrFromRegister(conversionState, "$t0", typeOffset);
// result.AppendLine(string.Format("mov $t0, {0}($t0)", typeOffset));
//}
//// 2.2. Move element type ref from array object into $t1
//// - Move array ref into $t1
//GlobalMethods.CheckAddrFromRegister(conversionState, "$sp", sizeToPop == 8 ? 12 : 8);
//result.AppendLine(string.Format("mov $t1, {0}($sp)", sizeToPop == 8 ? 12 : 8));
//// - Move elemType ref (offset($t1)) into $t1
int elemTypeOffset = conversionState.TheILLibrary.GetFieldInfo(arrayTypeInfo, "elemType").OffsetInBytes;
//GlobalMethods.CheckAddrFromRegister(conversionState, "$t1", elemTypeOffset);
//result.AppendLine(string.Format("mov $t1, {0}($t1)", elemTypeOffset));
//// 2.3. Compare $t0 to $t1
//result.AppendLine("cmp $t0, $t1");
//// 2.4. If the same, jump to continue execution further down
//result.AppendLine("je " + ContinueExecutionLabel2);
//// 2.5. Otherwise, call Exceptions.ThrowArrayTypeMismatchException
//result.AppendLine(string.Format("call {0}", conversionState.GetMethodID(conversionState.ThrowArrayTypeMismatchExceptionMethod)));
//result.AppendLine(ContinueExecutionLabel2 + ":");
// 3. Check index to get is > -1 and < array length
// 3.1. Move index into $t0
// 3.2. Move array length into $t1
// 3.2. Compare $t0 to 0
// 3.3. Jump if greater than to next test condition (3.5)
// 3.4. Otherwise, call Exceptions.ThrowIndexOutOfRangeException
// 3.5. Compare $t0 to $t1
// 3.6. Jump if less than to continue execution further down
// 3.7. Otherwise, call Exceptions.ThrowIndexOutOfRangeException
// 3.1. Move index into $t0
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = (sizeToPop == 8 ? 8 : 4).ToString() + "($sp)", Dest = "$t0", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg
});
// 3.2. Move array length into $t2
// - Calculate the offset of the field from the start of the array object
int lengthOffset = conversionState.TheILLibrary.GetFieldInfo(arrayTypeInfo, "length").OffsetInBytes;
// - Move array ref into $t1
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = (sizeToPop == 8 ? 12 : 8).ToString() + "($sp)", Dest = "$t1", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg
});
// - Move length value (offset($t1)) into $t1
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = lengthOffset.ToString() + "($t1)", Dest = "$t1" });
GlobalMethods.LoadData(conversionState, theOp, "$t1", "$t1", lengthOffset, 4);
// 3.2. Compare $t0 to 0
// 3.3. Jump if greater than to next test condition (3.5)
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.BranchGreaterThanEqual, Src1 = "$t0", Src2 = "$zero", DestILPosition = currOpPosition, Extension = "Continue3_1"
});
// 3.4. Otherwise, call Exceptions.ThrowIndexOutOfRangeException
conversionState.Append(new ASMOps.Call()
{
Target = conversionState.GetThrowIndexOutOfRangeExceptionMethodInfo().ID
});
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "Continue3_1"
});
// 3.5. Compare $t0 to $t1
// 3.6. Jump if less than to continue execution further down
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.BranchLessThan, Src1 = "$t0", Src2 = "$t1", DestILPosition = currOpPosition, Extension = "Continue3_2"
});
// 3.7. Otherwise, call Exceptions.ThrowIndexOutOfRangeException
conversionState.Append(new ASMOps.Call()
{
Target = conversionState.GetThrowIndexOutOfRangeExceptionMethodInfo().ID
});
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "Continue3_2"
});
// 4. Calculate address of element
// 4.0. Pop value into $t2:$t1
// 4.1. Pop index into $t3
// 4.2. Pop array ref into $t0
// 4.3. Move element type ref (from array ref) into $t0
// 4.4. Push $t0
// 4.5. Move IsValueType (from element ref type) into $t0
// 4.6. If IsValueType, continue to 4.6., else goto 4.9.
// 4.7. Pop $t0
// 4.8. Move Size (from element type ref) into $t0
// 4.9. Skip over 4.9. and 4.10.
// 4.10. Pop $t0
// 4.11. Move StackSize (from element type ref) into $t0
// 4.12. Mulitply $t0 by $t3 (index by element size)
// 4.13. Move array ref into $t3
// 4.14. Add enough to go past Kernel.FOS_System.Array fields
// 4.15. Add $t0 and $t1 (array ref + fields + (index * element size))
// 4.0. Pop value into $t2:$t1
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t2"
});
if (sizeToPop == 8)
{
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t1"
});
}
// 4.1. Pop index into $t3
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t3"
});
// 4.2. Move array ref into $t0
conversionState.Append(new ASMOps.Mov()
{
Size = ASMOps.OperandSize.Word, Src = "0($sp)", Dest = "$t0", MoveType = ASMOps.Mov.MoveTypes.SrcMemoryToDestReg
});
// 4.3. Move element type ref (from array ref) into $t0
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = elemTypeOffset.ToString() + "($t0)", Dest = "$t0" });
GlobalMethods.LoadData(conversionState, theOp, "$t0", "$t0", elemTypeOffset, 4);
// 4.4. Push $t0
conversionState.Append(new ASMOps.Push()
{
Size = ASMOps.OperandSize.Word, Src = "$t0"
});
// 4.5. Move IsValueType (from element ref type) into $t0
int isValueTypeOffset = conversionState.GetTypeFieldOffset("IsValueType");
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Byte, Src = isValueTypeOffset.ToString() + "($t0)", Dest = "$t0" });
GlobalMethods.LoadData(conversionState, theOp, "$t0", "$t0", isValueTypeOffset, 1);
// 4.6. If IsValueType, continue to 4.7., else goto 4.9.
conversionState.Append(new ASMOps.And()
{
Src1 = "$t0", Src2 = "1", Dest = "$t4"
});
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.BranchZero, Src1 = "$t4", DestILPosition = currOpPosition, Extension = "Continue4_1"
});
// 4.7. Pop $t0
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t0"
});
// 4.8. Move Size (from element type ref) into $t0
int sizeOffset = conversionState.GetTypeFieldOffset("Size");
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = sizeOffset.ToString() + "($t0)", Dest = "$t0" });
GlobalMethods.LoadData(conversionState, theOp, "$t0", "$t0", sizeOffset, 4);
// 4.9. Skip over 4.9. and 4.10.
conversionState.Append(new ASMOps.Branch()
{
BranchType = ASMOps.BranchOp.Branch, DestILPosition = currOpPosition, Extension = "Continue4_2"
});
// 4.10. Pop $t0
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "Continue4_1"
});
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t0"
});
// 4.11. Move StackSize (from element type ref) into $t0
int stackSizeOffset = conversionState.GetTypeFieldOffset("StackSize");
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = stackSizeOffset.ToString() + "($t0)", Dest = "$t0" });
GlobalMethods.LoadData(conversionState, theOp, "$t0", "$t0", stackSizeOffset, 4);
// 4.12. Mulitply $t0 by $t3 (index by element size)
conversionState.Append(new ASMOps.Label()
{
ILPosition = currOpPosition, Extension = "Continue4_2"
});
conversionState.Append(new ASMOps.Mul()
{
Src1 = "$t3", Src2 = "$t0"
});
conversionState.Append(new ASMOps.Mflo()
{
Dest = "$t0"
});
// 4.13. Pop array ref into $t3
conversionState.Append(new ASMOps.Pop()
{
Size = ASMOps.OperandSize.Word, Dest = "$t3"
});
// 4.14. Add enough to go past Kernel.FOS_System.Array fields
int allFieldsOffset = 0;
#region Offset calculation
{
Types.FieldInfo highestOffsetFieldInfo = arrayTypeInfo.FieldInfos.Where(x => !x.IsStatic).OrderByDescending(x => x.OffsetInBytes).First();
Types.TypeInfo fieldTypeInfo = conversionState.TheILLibrary.GetTypeInfo(highestOffsetFieldInfo.UnderlyingInfo.FieldType);
allFieldsOffset = highestOffsetFieldInfo.OffsetInBytes + (fieldTypeInfo.IsValueType ? fieldTypeInfo.SizeOnHeapInBytes : fieldTypeInfo.SizeOnStackInBytes);
}
#endregion
conversionState.Append(new ASMOps.Add()
{
Src1 = "$t3", Src2 = allFieldsOffset.ToString(), Dest = "$t3"
});
// 4.15. Add $t0 and $t3 (array ref + fields + (index * element size))
conversionState.Append(new ASMOps.Add()
{
Src1 = "$t3", Src2 = "$t0", Dest = "$t0"
});
// 5. Pop the element from the stack to array
// 5.1. Move value in $t1:$t2 to 0($t0)
if (sizeToPop == 8)
{
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = "$t2", Dest = "0($t0)" });
GlobalMethods.StoreData(conversionState, theOp, "$t0", "$t2", 0, 4);
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = "$t1", Dest = "4($t0)" });
GlobalMethods.StoreData(conversionState, theOp, "$t0", "$t1", 4, 4);
}
else if (sizeToPop == 4)
{
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Word, Src = "$t2", Dest = "0($t0)" });
GlobalMethods.StoreData(conversionState, theOp, "$t0", "$t2", 0, 4);
}
else if (sizeToPop == 2)
{
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Halfword, Src = "$t2", Dest = "0($t0)" });
GlobalMethods.StoreData(conversionState, theOp, "$t0", "$t2", 0, 2);
}
else if (sizeToPop == 1)
{
//conversionState.Append(new ASMOps.Mov() { Size = ASMOps.OperandSize.Byte, Src = "$t2", Dest = "0($t0)" });
GlobalMethods.StoreData(conversionState, theOp, "$t0", "$t2", 0, 1);
}
// 5.2. Pop index, array ref and value from our stack
conversionState.CurrentStackFrame.Stack.Pop();
conversionState.CurrentStackFrame.Stack.Pop();
conversionState.CurrentStackFrame.Stack.Pop();
}
