public void TerminateItem(Address addr)
{
if (!TryFindItem(addr, out ImageMapItem item))
{
return;
}
long delta = addr - item.Address;
if (delta == 0)
{
return;
}
// Need to split the item.
var itemNew = new ImageMapItem {
Address = addr, Size = (uint)(item.Size - delta)
};
Items.Add(itemNew.Address, itemNew);
item.Size = (uint)delta;
}
public void RemoveItem(Address addr)
{
ImageMapItem item;
if (!TryFindItemExact(addr, out item))
{
return;
}
item.DataType = new UnknownType();
ImageMapItem mergedItem = item;
// Merge with previous item
ImageMapItem prevItem;
if (Items.TryGetLowerBound((addr - 1), out prevItem) &&
prevItem.DataType is UnknownType &&
prevItem.EndAddress.Equals(item.Address))
{
mergedItem = prevItem;
mergedItem.Size = (uint)(item.EndAddress - mergedItem.Address);
Items.Remove(item.Address);
}
// Merge with next item
ImageMapItem nextItem;
if (Items.TryGetUpperBound((addr + 1), out nextItem) &&
nextItem.DataType is UnknownType &&
mergedItem.EndAddress.Equals(nextItem.Address))
{
mergedItem.Size = (uint)(nextItem.EndAddress - mergedItem.Address);
Items.Remove(nextItem.Address);
}
FireMapChanged();
}
/// <summary>
/// Seed the imagemap with image symbols
/// </summary>
public void BuildImageMap()
{
this.ImageMap = SegmentMap.CreateImageMap();
foreach (var sym in this.ImageSymbols.Values.Where(
s => s.Type == SymbolType.Data && s.Size != 0))
{
this.ImageMap.AddItemWithSize(
sym.Address,
new ImageMapItem
{
Address = sym.Address,
DataType = sym.DataType,
Size = sym.Size,
});
}
var tlDeser = CreateTypeLibraryDeserializer();
foreach (var kv in User.Globals)
{
var dt = kv.Value.DataType.Accept(tlDeser);
var item = new ImageMapItem((uint)dt.Size)
{
Address = kv.Key,
DataType = dt,
Name = kv.Value.Name,
};
if (item.Size > 0)
{
this.ImageMap.AddItemWithSize(kv.Key, item);
}
else
{
this.ImageMap.AddItem(kv.Key, item);
}
//$BUGBUG: what about x86 segmented binaries?
int offset = (int)kv.Key.ToLinear();
GlobalFields.Fields.Add(offset, dt, kv.Value.Name);
}
}
public GlobalDataItem_v2 ModifyUserGlobal(IProcessorArchitecture arch, Address address, SerializedType dataType, string name)
{
if (!User.Globals.TryGetValue(address, out var gbl))
{
gbl = new GlobalDataItem_v2()
{
Address = address.ToString(),
};
User.Globals.Add(address, gbl);
}
gbl.Name = name;
gbl.DataType = dataType;
this.ImageMap.RemoveItem(address);
var tlDeser = CreateTypeLibraryDeserializer();
var dt = dataType.Accept(tlDeser);
var size = GetDataSize(arch, address, dt);
var item = new ImageMapItem
{
Address = address,
Size = size,
Name = name,
DataType = dt,
};
if (size != 0)
{
this.ImageMap.AddItemWithSize(address, item);
}
else
{
this.ImageMap.AddItem(address, item);
}
return(gbl);
}
public bool TryFindItemExact(Address addr, out ImageMapItem item)
{
return(items.TryGetValue(addr, out item));
}
public bool TryFindItem(Address addr, out ImageMapItem item)
{
return(items.TryGetLowerBound(addr, out item));
}
public void AddItemWithSize(Address addr, ImageMapItem itemNew)
{
if (!TryFindItem(addr, out var item))
{
throw new ArgumentException(string.Format("Address {0} is not within the image range.", addr));
}
// Do not split items with known data.
if (!(item.DataType is UnknownType || item.DataType is CodeType))
{
return;
}
long delta = addr - item.Address;
Debug.Assert(delta >= 0, "Should have found an item at the supplied address.");
if (delta > 0)
{
int afterOffset = (int)(delta + itemNew.Size);
ImageMapItem itemAfter = null;
if (item.Size > afterOffset)
{
itemAfter = new ImageMapItem
{
Address = addr + itemNew.Size,
Size = (uint)(item.Size - afterOffset),
DataType = ChopBefore(item.DataType, afterOffset),
};
}
item.Size = (uint)delta;
item.DataType = ChopAfter(item.DataType, (int)delta); // Shrink the existing mofo.
Items.Add(addr, itemNew);
if (itemAfter != null)
{
Items.Add(itemAfter.Address, itemAfter);
}
}
else
{
if (!(item.DataType is UnknownType) &&
!(item.DataType is CodeType))
{
var u = new Unifier();
if (u.AreCompatible(item.DataType, itemNew.DataType))
{
item.DataType = u.Unify(item.DataType, itemNew.DataType);
}
else
{
throw new NotSupportedException("Haven't handled this case yet.");
}
}
Items.Remove(item.Address);
item.Address += itemNew.Size;
item.Size -= itemNew.Size;
Items.Add(addr, itemNew);
if (item.Size > 0 && !Items.ContainsKey(item.Address))
{
Items.Add(item.Address, item);
}
}
FireMapChanged();
}
