NtStatus NtAllocateVirtualMemory(ref uint baseAddress, GuestMemory <uint> zeroBits,
ref uint regionSize, AllocationType allocationType, uint protect)
{
baseAddress &= 0xFFFFF000;
if ((regionSize & 0xFFF) != 0)
{
regionSize = (regionSize & 0xFFFFF000) + 4096;
}
Console.WriteLine($"Allocating 0x{regionSize:X} bytes at {baseAddress:X} ({allocationType})");
if (allocationType.HasFlag(AllocationType.Commit) || allocationType.HasFlag(AllocationType.Reserve))
{
if (baseAddress != 0 && Box.Cpu.IsMapped(baseAddress))
{
return(NtStatus.Success);
}
var virt = Box.PageManager.AllocVirtPages((int)regionSize / 4096, at: baseAddress != 0 ? (uint?)baseAddress : null);
var phys = Box.PageManager.AllocPhysPages((int)regionSize / 4096);
Box.Cpu.MapPages(virt, phys, (int)regionSize / 4096, true);
baseAddress = virt;
}
else
{
throw new Exception($"Unsupported allocation type {allocationType}");
}
Console.WriteLine($"Output address is {baseAddress:X}");
return(NtStatus.Success);
}
void HalReadSMCTrayState(GuestMemory <uint> count, out uint state)
{
if (count)
{
count.Value = 1;
}
state = 16; // Tray open
}
void RtlInitAnsiString(out AnsiString dest, GuestMemory <byte> source)
{
var slen = source == 0 ? 0 : PStrlen(source);
dest = new AnsiString {
Buffer = source,
Length = (ushort)slen,
MaxLength = (ushort)(slen + 1)
};
}
int PStrlen(GuestMemory <byte> gm)
{
var len = 0;
while (gm[len] != 0)
{
len++;
}
return(len);
}
NtStatus IoCreateDevice(uint driverObject, uint deviceExtensionSize, GuestMemory <AnsiString> deviceName, uint deviceType,
bool exclusive, out uint deviceObject
)
{
deviceObject = Box.MemoryAllocator.Allocate(65536); // XXX: Bullshit
var gm = new GuestMemory <uint>(deviceObject + 0x18)
{
Value = deviceObject + 0x1000
};
return(NtStatus.Success);
}
void KeInitializeTimerEx(GuestMemory <Ktimer> timer, TimerType type)
{
timer.Value = new Ktimer {
Header = new DispatcherHeader {
Type = (byte)(type + 8),
Size = 10,
WaitListHead = new ListEntry {
Flink = timer + 8,
Blink = timer + 8
}
}
};
}
NtStatus ExQueryNonVolatileSetting(uint valueIndex, GuestMemory <uint> type, GuestMemory <uint> value, uint valueLength, GuestMemory <uint> resultLength)
{
if (type)
{
type.Value = 4;
}
if (value)
{
value.Value = 0;
}
if (resultLength)
{
resultLength.Value = 4;
}
return(NtStatus.Success);
}
bool KeSetTimer(GuestMemory <Ktimer> timer, ulong dueTime, GuestMemory <Kdpc> dpc)
{
return(true);
}
NtStatus PsCreateSystemThreadEx(
out uint threadHandle, uint threadExtraSize, uint kernelStackSize, uint tlsDataSize, GuestMemory <uint> threadId,
uint startContext1, uint startContext2, bool createSuspended, bool debugStack, uint startRoutine
)
{
var sp = Box.MemoryAllocator.Allocate(32768) + 32768;
Console.WriteLine($"Creating new thread with stack top at {sp:X}");
sp -= 12;
new GuestMemory <uint>(sp)
{
[0] = 0xDEADBEEFU,
[1] = startContext1,
[2] = startContext2
};
var thread = Box.ThreadManager.Add(startRoutine, sp);
thread.Ebp = sp + 4;
threadHandle = Box.HandleManager.Add(thread);
if (threadId.GuestAddr != 0)
{
threadId.Value = thread.Id;
}
Tib.Create(Box, thread);
return(NtStatus.Success);
}
