private void SvcUnmapSharedMemory(AThreadState ThreadState)
{
int Handle = (int)ThreadState.X0;
long Position = (long)ThreadState.X1;
long Size = (long)ThreadState.X2;
if (!PageAligned(Position))
{
Device.Log.PrintWarning(LogClass.KernelSvc, $"Address 0x{Position:x16} is not page aligned!");
ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidAddress);
return;
}
if (!PageAligned(Size) || Size == 0)
{
Device.Log.PrintWarning(LogClass.KernelSvc, $"Size 0x{Size:x16} is not page aligned or is zero!");
ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidSize);
return;
}
if ((ulong)(Position + Size) <= (ulong)Position)
{
Device.Log.PrintWarning(LogClass.KernelSvc, $"Invalid region address 0x{Position:x16} / size 0x{Size:x16}!");
ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.NoAccessPerm);
return;
}
KSharedMemory SharedMemory = Process.HandleTable.GetObject <KSharedMemory>(Handle);
if (SharedMemory == null)
{
Device.Log.PrintWarning(LogClass.KernelSvc, $"Invalid shared memory handle 0x{Handle:x8}!");
ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidHandle);
return;
}
if (!InsideAddrSpace(Position, Size) || InsideMapRegion(Position, Size) || InsideHeapRegion(Position, Size))
{
Device.Log.PrintWarning(LogClass.KernelSvc, $"Address 0x{Position:x16} out of range!");
ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.NoAccessPerm);
return;
}
long Result = Process.MemoryManager.UnmapSharedMemory(Position, Size);
if (Result != 0)
{
Device.Log.PrintWarning(LogClass.KernelSvc, $"Operation failed with error 0x{Result:x}!");
}
ThreadState.X0 = (ulong)Result;
}
