public unsafe void LoadElementPtr(int index, VMStack stack)
{
if (Type is DynamicArrayTypeInfo arrayType)
{
int elementSize = arrayType.ElementType.SizeOf();
var elemptr = new VMPointer(this);
elemptr.MemOffset += (index * elementSize);
stack.Push(elemptr);
}
else
{
throw new System.InvalidOperationException();
}
}
public VMSlice(VMPointer pointer, int length)
{
Handle = pointer.MemLocation;
Offset = pointer.MemOffset;
Length = length;
}
public unsafe void Load(VMPointer pointer, TypeInfo type)
{
var heapRef = _heap.Get(pointer.MemLocation);
using (var handle = heapRef.Memory.Pin((int)pointer.MemOffset))
{
if (type is IntegerTypeInfo intType)
{
switch (intType.Width)
{
case IntegerWidth.I8:
Push(*handle.Ptr);
break;
case IntegerWidth.I16:
Push(*((ushort *)handle.Ptr));
break;
case IntegerWidth.I32:
Push(*((uint *)handle.Ptr));
break;
case IntegerWidth.I64:
Push(*((ulong *)handle.Ptr));
break;
}
}
else if (type is FloatTypeInfo floatType)
{
switch (floatType.Width)
{
case FloatWidth.F32:
Push(*((float *)handle.Ptr));
break;
case FloatWidth.F64:
Push(*((double *)handle.Ptr));
break;
}
}
else if (type is BooleanTypeInfo)
{
Push(*handle.Ptr);
}
else if (type is CharTypeInfo)
{
Push(*((char *)handle.Ptr));
}
else if (type is DynamicArrayTypeInfo || type is StringTypeInfo)
{
Push(*((VMSlice *)handle.Ptr));
}
else if (type is ReferenceTypeInfo || type is PointerTypeInfo)
{
Push(*((VMPointer *)handle.Ptr));
}
else if (type is StaticArrayTypeInfo || type is StructTypeInfo)
{
// just direct copy the bytes to the top of the stack
int bytesToCopy = type.SizeOf();
ulong *ptr64 = (ulong *)handle.Ptr;
while (bytesToCopy >= 8)
{
Push(*ptr64++);
bytesToCopy -= 8;
}
byte *ptr8 = (byte *)ptr64;
while (bytesToCopy > 0)
{
Push(*ptr8++);
bytesToCopy--;
}
}
else
{
throw new System.NotImplementedException();
}
}
}