public static unsafe ConsoleKeyInfo ReadKey(bool intercept)
{
// mov ah,08h
// int 21h
// ret
byte *pCode = stackalloc byte[] { 0xB4, 0x08, 0xCD, 0x21, 0xC3 };
char c = (char)ClassConstructorRunner.Call <byte>(new IntPtr(pCode));
// Interpret WASD as arrow keys.
ConsoleKey k = default;
if (c == 'w')
{
k = ConsoleKey.UpArrow;
}
else if (c == 'd')
{
k = ConsoleKey.RightArrow;
}
else if (c == 's')
{
k = ConsoleKey.DownArrow;
}
else if (c == 'a')
{
k = ConsoleKey.LeftArrow;
}
return(new ConsoleKeyInfo(c, k, false, false, false));
}
public static unsafe void Sleep(int delayMs)
{
// Place the sequence of bytes 0xF4, 0xC3 on the stack.
// The bytes correspond to the following assembly instruction sequence:
//
// hlt
// ret
//
ushort hlt = 0xc3f4;
long expected = Environment.TickCount64 + delayMs;
while (Environment.TickCount64 < expected)
{
// Call the helper we placed on the stack to halt the processor
// for a little bit.
// (Security people are crying in a corner right now).
ClassConstructorRunner.Call <int>(new IntPtr(&hlt));
}
}
public static unsafe void EnsureClassConstructorRun(IntPtr staticClassConstructionContext)
{
StaticClassConstructionContext *context = (StaticClassConstructionContext *)staticClassConstructionContext;
ClassConstructorRunner.EnsureClassConstructorRun(context);
}
public static void InitializeLibrary()
{
PreallocatedOutOfMemoryException.Initialize();
ClassConstructorRunner.Initialize();
TypeLoaderExports.Initialize();
}
