// For future use.
public void RemoveFunctionEntries(ulong guestAddress)
{
Targets.TryRemove(guestAddress, out _);
Dependants.TryRemove(guestAddress, out _);
if (Owners.TryRemove(guestAddress, out List <int> entries))
{
foreach (int entry in entries)
{
if ((entry & DynamicEntryTag) == 0)
{
IntPtr addr = GetEntryAddressJumpTable(entry);
Marshal.WriteInt64(addr, 0, 0L);
Marshal.WriteInt64(addr, 8, 0L);
Table.FreeEntry(entry);
}
else
{
IntPtr addr = GetEntryAddressDynamicTable(entry & ~DynamicEntryTag);
for (int j = 0; j < DynamicTableElems; j++)
{
Marshal.WriteInt64(addr + j * JumpTableStride, 0, 0L);
Marshal.WriteInt64(addr + j * JumpTableStride, 8, 0L);
}
DynTable.FreeEntry(entry & ~DynamicEntryTag);
}
}
}
}
public int ReserveDynamicEntry(ulong ownerGuestAddress, bool isJump)
{
int entry = DynTable.AllocateEntry();
ExpandIfNeededDynamicTable(entry);
// Keep track of ownership for jump table entries.
List <int> ownerEntries = Owners.GetOrAdd(ownerGuestAddress, (addr) => new List <int>());
lock (ownerEntries)
{
ownerEntries.Add(entry | DynamicEntryTag);
}
// Initialize all host function pointers to the indirect call stub.
IntPtr addr = GetEntryAddressDynamicTable(entry);
long stubPtr = DirectCallStubs.IndirectCallStub(isJump).ToInt64();
for (int i = 0; i < DynamicTableElems; i++)
{
Marshal.WriteInt64(addr, i * JumpTableStride + 8, stubPtr);
}
return(entry);
}
public bool CheckEntryFromAddressDynamicTable(IntPtr entryAddress)
{
int entry = Math.DivRem((int)((ulong)entryAddress - (ulong)_dynamicRegion.Pointer), DynamicTableStride, out int rem);
return(rem == 0 && DynTable.EntryIsValid(entry));
}
public IntPtr GetEntryAddressDynamicTable(int entry)
{
Debug.Assert(DynTable.EntryIsValid(entry));
return(_dynamicRegion.Pointer + entry * DynamicTableStride);
}
