Ryujinx/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs

2615 lines
81 KiB
C#

using Ryujinx.Common;
using Ryujinx.Common.Logging;
using Ryujinx.Cpu;
using Ryujinx.HLE.Exceptions;
using Ryujinx.HLE.HOS.Kernel.Common;
using Ryujinx.HLE.HOS.Kernel.Ipc;
using Ryujinx.HLE.HOS.Kernel.Memory;
using Ryujinx.HLE.HOS.Kernel.Process;
using Ryujinx.HLE.HOS.Kernel.Threading;
using Ryujinx.Memory;
using System;
using System.Threading;
namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
{
class Syscall
{
private readonly KernelContext _context;
public Syscall(KernelContext context)
{
_context = context;
}
// Process
public KernelResult GetProcessId(out ulong pid, int handle)
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KProcess process = currentProcess.HandleTable.GetKProcess(handle);
if (process == null)
{
KThread thread = currentProcess.HandleTable.GetKThread(handle);
if (thread != null)
{
process = thread.Owner;
}
// TODO: KDebugEvent.
}
pid = process?.Pid ?? 0;
return process != null
? KernelResult.Success
: KernelResult.InvalidHandle;
}
public KernelResult CreateProcess(
out int handle,
ProcessCreationInfo info,
ReadOnlySpan<int> capabilities,
IProcessContextFactory contextFactory,
ThreadStart customThreadStart = null)
{
handle = 0;
if ((info.Flags & ~ProcessCreationFlags.All) != 0)
{
return KernelResult.InvalidEnumValue;
}
// TODO: Address space check.
if ((info.Flags & ProcessCreationFlags.PoolPartitionMask) > ProcessCreationFlags.PoolPartitionSystemNonSecure)
{
return KernelResult.InvalidEnumValue;
}
if ((info.CodeAddress & 0x1fffff) != 0)
{
return KernelResult.InvalidAddress;
}
if (info.CodePagesCount < 0 || info.SystemResourcePagesCount < 0)
{
return KernelResult.InvalidSize;
}
if (info.Flags.HasFlag(ProcessCreationFlags.OptimizeMemoryAllocation) &&
!info.Flags.HasFlag(ProcessCreationFlags.IsApplication))
{
return KernelResult.InvalidThread;
}
KHandleTable handleTable = KernelStatic.GetCurrentProcess().HandleTable;
KProcess process = new KProcess(_context);
using var _ = new OnScopeExit(process.DecrementReferenceCount);
KResourceLimit resourceLimit;
if (info.ResourceLimitHandle != 0)
{
resourceLimit = handleTable.GetObject<KResourceLimit>(info.ResourceLimitHandle);
if (resourceLimit == null)
{
return KernelResult.InvalidHandle;
}
}
else
{
resourceLimit = _context.ResourceLimit;
}
MemoryRegion memRegion = (info.Flags & ProcessCreationFlags.PoolPartitionMask) switch
{
ProcessCreationFlags.PoolPartitionApplication => MemoryRegion.Application,
ProcessCreationFlags.PoolPartitionApplet => MemoryRegion.Applet,
ProcessCreationFlags.PoolPartitionSystem => MemoryRegion.Service,
ProcessCreationFlags.PoolPartitionSystemNonSecure => MemoryRegion.NvServices,
_ => MemoryRegion.NvServices
};
KernelResult result = process.Initialize(
info,
capabilities,
resourceLimit,
memRegion,
contextFactory,
customThreadStart);
if (result != KernelResult.Success)
{
return result;
}
_context.Processes.TryAdd(process.Pid, process);
return handleTable.GenerateHandle(process, out handle);
}
public KernelResult StartProcess(int handle, int priority, int cpuCore, ulong mainThreadStackSize)
{
KProcess process = KernelStatic.GetCurrentProcess().HandleTable.GetObject<KProcess>(handle);
if (process == null)
{
return KernelResult.InvalidHandle;
}
if ((uint)cpuCore >= KScheduler.CpuCoresCount || !process.IsCpuCoreAllowed(cpuCore))
{
return KernelResult.InvalidCpuCore;
}
if ((uint)priority >= KScheduler.PrioritiesCount || !process.IsPriorityAllowed(priority))
{
return KernelResult.InvalidPriority;
}
process.DefaultCpuCore = cpuCore;
KernelResult result = process.Start(priority, mainThreadStackSize);
if (result != KernelResult.Success)
{
return result;
}
process.IncrementReferenceCount();
return KernelResult.Success;
}
// IPC
public KernelResult ConnectToNamedPort(out int handle, ulong namePtr)
{
handle = 0;
if (!KernelTransfer.UserToKernelString(out string name, namePtr, 12))
{
return KernelResult.UserCopyFailed;
}
return ConnectToNamedPort(out handle, name);
}
public KernelResult ConnectToNamedPort(out int handle, string name)
{
handle = 0;
if (name.Length > 11)
{
return KernelResult.MaximumExceeded;
}
KAutoObject autoObj = KAutoObject.FindNamedObject(_context, name);
if (autoObj is not KClientPort clientPort)
{
return KernelResult.NotFound;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KernelResult result = currentProcess.HandleTable.ReserveHandle(out handle);
if (result != KernelResult.Success)
{
return result;
}
result = clientPort.Connect(out KClientSession clientSession);
if (result != KernelResult.Success)
{
currentProcess.HandleTable.CancelHandleReservation(handle);
return result;
}
currentProcess.HandleTable.SetReservedHandleObj(handle, clientSession);
clientSession.DecrementReferenceCount();
return result;
}
public KernelResult SendSyncRequest(int handle)
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KClientSession session = currentProcess.HandleTable.GetObject<KClientSession>(handle);
if (session == null)
{
return KernelResult.InvalidHandle;
}
return session.SendSyncRequest();
}
public KernelResult SendSyncRequestWithUserBuffer(ulong messagePtr, ulong messageSize, int handle)
{
if (!PageAligned(messagePtr))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(messageSize) || messageSize == 0)
{
return KernelResult.InvalidSize;
}
if (messagePtr + messageSize <= messagePtr)
{
return KernelResult.InvalidMemState;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KernelResult result = currentProcess.MemoryManager.BorrowIpcBuffer(messagePtr, messageSize);
if (result != KernelResult.Success)
{
return result;
}
KClientSession session = currentProcess.HandleTable.GetObject<KClientSession>(handle);
if (session == null)
{
result = KernelResult.InvalidHandle;
}
else
{
result = session.SendSyncRequest(messagePtr, messageSize);
}
KernelResult result2 = currentProcess.MemoryManager.UnborrowIpcBuffer(messagePtr, messageSize);
if (result == KernelResult.Success)
{
result = result2;
}
return result;
}
public KernelResult SendAsyncRequestWithUserBuffer(out int doneEventHandle, ulong messagePtr, ulong messageSize, int handle)
{
doneEventHandle = 0;
if (!PageAligned(messagePtr))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(messageSize) || messageSize == 0)
{
return KernelResult.InvalidSize;
}
if (messagePtr + messageSize <= messagePtr)
{
return KernelResult.InvalidMemState;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KernelResult result = currentProcess.MemoryManager.BorrowIpcBuffer(messagePtr, messageSize);
if (result != KernelResult.Success)
{
return result;
}
KResourceLimit resourceLimit = currentProcess.ResourceLimit;
if (resourceLimit != null && !resourceLimit.Reserve(LimitableResource.Event, 1))
{
currentProcess.MemoryManager.UnborrowIpcBuffer(messagePtr, messageSize);
return KernelResult.ResLimitExceeded;
}
KClientSession session = currentProcess.HandleTable.GetObject<KClientSession>(handle);
if (session == null)
{
result = KernelResult.InvalidHandle;
}
else
{
KEvent doneEvent = new KEvent(_context);
result = currentProcess.HandleTable.GenerateHandle(doneEvent.ReadableEvent, out doneEventHandle);
if (result == KernelResult.Success)
{
result = session.SendAsyncRequest(doneEvent.WritableEvent, messagePtr, messageSize);
if (result != KernelResult.Success)
{
currentProcess.HandleTable.CloseHandle(doneEventHandle);
}
}
}
if (result != KernelResult.Success)
{
resourceLimit?.Release(LimitableResource.Event, 1);
currentProcess.MemoryManager.UnborrowIpcBuffer(messagePtr, messageSize);
}
return result;
}
public KernelResult CreateSession(
out int serverSessionHandle,
out int clientSessionHandle,
bool isLight,
ulong namePtr)
{
serverSessionHandle = 0;
clientSessionHandle = 0;
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KResourceLimit resourceLimit = currentProcess.ResourceLimit;
if (resourceLimit != null && !resourceLimit.Reserve(LimitableResource.Session, 1))
{
return KernelResult.ResLimitExceeded;
}
KernelResult result;
if (isLight)
{
KLightSession session = new KLightSession(_context);
result = currentProcess.HandleTable.GenerateHandle(session.ServerSession, out serverSessionHandle);
if (result == KernelResult.Success)
{
result = currentProcess.HandleTable.GenerateHandle(session.ClientSession, out clientSessionHandle);
if (result != KernelResult.Success)
{
currentProcess.HandleTable.CloseHandle(serverSessionHandle);
serverSessionHandle = 0;
}
}
session.ServerSession.DecrementReferenceCount();
session.ClientSession.DecrementReferenceCount();
}
else
{
KSession session = new KSession(_context);
result = currentProcess.HandleTable.GenerateHandle(session.ServerSession, out serverSessionHandle);
if (result == KernelResult.Success)
{
result = currentProcess.HandleTable.GenerateHandle(session.ClientSession, out clientSessionHandle);
if (result != KernelResult.Success)
{
currentProcess.HandleTable.CloseHandle(serverSessionHandle);
serverSessionHandle = 0;
}
}
session.ServerSession.DecrementReferenceCount();
session.ClientSession.DecrementReferenceCount();
}
return result;
}
public KernelResult AcceptSession(out int sessionHandle, int portHandle)
{
sessionHandle = 0;
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KServerPort serverPort = currentProcess.HandleTable.GetObject<KServerPort>(portHandle);
if (serverPort == null)
{
return KernelResult.InvalidHandle;
}
KernelResult result = currentProcess.HandleTable.ReserveHandle(out int handle);
if (result != KernelResult.Success)
{
return result;
}
KAutoObject session;
if (serverPort.IsLight)
{
session = serverPort.AcceptIncomingLightConnection();
}
else
{
session = serverPort.AcceptIncomingConnection();
}
if (session != null)
{
currentProcess.HandleTable.SetReservedHandleObj(handle, session);
session.DecrementReferenceCount();
sessionHandle = handle;
result = KernelResult.Success;
}
else
{
currentProcess.HandleTable.CancelHandleReservation(handle);
result = KernelResult.NotFound;
}
return result;
}
public KernelResult ReplyAndReceive(
out int handleIndex,
ulong handlesPtr,
int handlesCount,
int replyTargetHandle,
long timeout)
{
handleIndex = 0;
if ((uint)handlesCount > 0x40)
{
return KernelResult.MaximumExceeded;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
ulong copySize = (ulong)((long)handlesCount * 4);
if (!currentProcess.MemoryManager.InsideAddrSpace(handlesPtr, copySize))
{
return KernelResult.UserCopyFailed;
}
if (handlesPtr + copySize < handlesPtr)
{
return KernelResult.UserCopyFailed;
}
int[] handles = new int[handlesCount];
if (!KernelTransfer.UserToKernelArray<int>(handlesPtr, handles))
{
return KernelResult.UserCopyFailed;
}
if (timeout > 0)
{
timeout += KTimeManager.DefaultTimeIncrementNanoseconds;
}
return ReplyAndReceive(out handleIndex, handles, replyTargetHandle, timeout);
}
public KernelResult ReplyAndReceive(out int handleIndex, ReadOnlySpan<int> handles, int replyTargetHandle, long timeout)
{
handleIndex = 0;
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KSynchronizationObject[] syncObjs = new KSynchronizationObject[handles.Length];
for (int index = 0; index < handles.Length; index++)
{
KSynchronizationObject obj = currentProcess.HandleTable.GetObject<KSynchronizationObject>(handles[index]);
if (obj == null)
{
return KernelResult.InvalidHandle;
}
syncObjs[index] = obj;
}
KernelResult result = KernelResult.Success;
if (replyTargetHandle != 0)
{
KServerSession replyTarget = currentProcess.HandleTable.GetObject<KServerSession>(replyTargetHandle);
if (replyTarget == null)
{
result = KernelResult.InvalidHandle;
}
else
{
result = replyTarget.Reply();
}
}
if (result == KernelResult.Success)
{
if (timeout > 0)
{
timeout += KTimeManager.DefaultTimeIncrementNanoseconds;
}
while ((result = _context.Synchronization.WaitFor(syncObjs, timeout, out handleIndex)) == KernelResult.Success)
{
KServerSession session = currentProcess.HandleTable.GetObject<KServerSession>(handles[handleIndex]);
if (session == null)
{
break;
}
if ((result = session.Receive()) != KernelResult.NotFound)
{
break;
}
}
}
return result;
}
public KernelResult ReplyAndReceiveWithUserBuffer(
out int handleIndex,
ulong handlesPtr,
ulong messagePtr,
ulong messageSize,
int handlesCount,
int replyTargetHandle,
long timeout)
{
handleIndex = 0;
if ((uint)handlesCount > 0x40)
{
return KernelResult.MaximumExceeded;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
ulong copySize = (ulong)((long)handlesCount * 4);
if (!currentProcess.MemoryManager.InsideAddrSpace(handlesPtr, copySize))
{
return KernelResult.UserCopyFailed;
}
if (handlesPtr + copySize < handlesPtr)
{
return KernelResult.UserCopyFailed;
}
KernelResult result = currentProcess.MemoryManager.BorrowIpcBuffer(messagePtr, messageSize);
if (result != KernelResult.Success)
{
return result;
}
int[] handles = new int[handlesCount];
if (!KernelTransfer.UserToKernelArray<int>(handlesPtr, handles))
{
currentProcess.MemoryManager.UnborrowIpcBuffer(messagePtr, messageSize);
return KernelResult.UserCopyFailed;
}
KSynchronizationObject[] syncObjs = new KSynchronizationObject[handlesCount];
for (int index = 0; index < handlesCount; index++)
{
KSynchronizationObject obj = currentProcess.HandleTable.GetObject<KSynchronizationObject>(handles[index]);
if (obj == null)
{
currentProcess.MemoryManager.UnborrowIpcBuffer(messagePtr, messageSize);
return KernelResult.InvalidHandle;
}
syncObjs[index] = obj;
}
if (replyTargetHandle != 0)
{
KServerSession replyTarget = currentProcess.HandleTable.GetObject<KServerSession>(replyTargetHandle);
if (replyTarget == null)
{
result = KernelResult.InvalidHandle;
}
else
{
result = replyTarget.Reply(messagePtr, messageSize);
}
}
if (result == KernelResult.Success)
{
if (timeout > 0)
{
timeout += KTimeManager.DefaultTimeIncrementNanoseconds;
}
while ((result = _context.Synchronization.WaitFor(syncObjs, timeout, out handleIndex)) == KernelResult.Success)
{
KServerSession session = currentProcess.HandleTable.GetObject<KServerSession>(handles[handleIndex]);
if (session == null)
{
break;
}
if ((result = session.Receive(messagePtr, messageSize)) != KernelResult.NotFound)
{
break;
}
}
}
currentProcess.MemoryManager.UnborrowIpcBuffer(messagePtr, messageSize);
return result;
}
public KernelResult CreatePort(
out int serverPortHandle,
out int clientPortHandle,
int maxSessions,
bool isLight,
ulong namePtr)
{
serverPortHandle = clientPortHandle = 0;
if (maxSessions < 1)
{
return KernelResult.MaximumExceeded;
}
KPort port = new KPort(_context, maxSessions, isLight, (long)namePtr);
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KernelResult result = currentProcess.HandleTable.GenerateHandle(port.ClientPort, out clientPortHandle);
if (result != KernelResult.Success)
{
return result;
}
result = currentProcess.HandleTable.GenerateHandle(port.ServerPort, out serverPortHandle);
if (result != KernelResult.Success)
{
currentProcess.HandleTable.CloseHandle(clientPortHandle);
}
return result;
}
public KernelResult ManageNamedPort(out int handle, ulong namePtr, int maxSessions)
{
handle = 0;
if (!KernelTransfer.UserToKernelString(out string name, namePtr, 12))
{
return KernelResult.UserCopyFailed;
}
if (name.Length > 11)
{
return KernelResult.MaximumExceeded;
}
return ManageNamedPort(out handle, name, maxSessions);
}
public KernelResult ManageNamedPort(out int handle, string name, int maxSessions)
{
handle = 0;
if (maxSessions < 0)
{
return KernelResult.MaximumExceeded;
}
if (maxSessions == 0)
{
return KAutoObject.RemoveName(_context, name);
}
KPort port = new KPort(_context, maxSessions, false, 0);
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KernelResult result = currentProcess.HandleTable.GenerateHandle(port.ServerPort, out handle);
if (result != KernelResult.Success)
{
return result;
}
result = port.ClientPort.SetName(name);
if (result != KernelResult.Success)
{
currentProcess.HandleTable.CloseHandle(handle);
}
return result;
}
public KernelResult ConnectToPort(out int clientSessionHandle, int clientPortHandle)
{
clientSessionHandle = 0;
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KClientPort clientPort = currentProcess.HandleTable.GetObject<KClientPort>(clientPortHandle);
if (clientPort == null)
{
return KernelResult.InvalidHandle;
}
KernelResult result = currentProcess.HandleTable.ReserveHandle(out int handle);
if (result != KernelResult.Success)
{
return result;
}
KAutoObject session;
if (clientPort.IsLight)
{
result = clientPort.ConnectLight(out KLightClientSession clientSession);
session = clientSession;
}
else
{
result = clientPort.Connect(out KClientSession clientSession);
session = clientSession;
}
if (result != KernelResult.Success)
{
currentProcess.HandleTable.CancelHandleReservation(handle);
return result;
}
currentProcess.HandleTable.SetReservedHandleObj(handle, session);
session.DecrementReferenceCount();
clientSessionHandle = handle;
return result;
}
// Memory
public KernelResult SetHeapSize(out ulong address, ulong size)
{
if ((size & 0xfffffffe001fffff) != 0)
{
address = 0;
return KernelResult.InvalidSize;
}
KProcess process = KernelStatic.GetCurrentProcess();
return process.MemoryManager.SetHeapSize(size, out address);
}
public KernelResult SetMemoryPermission(ulong address, ulong size, KMemoryPermission permission)
{
if (!PageAligned(address))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (address + size <= address)
{
return KernelResult.InvalidMemState;
}
if (permission != KMemoryPermission.None && (permission | KMemoryPermission.Write) != KMemoryPermission.ReadAndWrite)
{
return KernelResult.InvalidPermission;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (!currentProcess.MemoryManager.InsideAddrSpace(address, size))
{
return KernelResult.InvalidMemState;
}
return currentProcess.MemoryManager.SetMemoryPermission(address, size, permission);
}
public KernelResult SetMemoryAttribute(
ulong address,
ulong size,
MemoryAttribute attributeMask,
MemoryAttribute attributeValue)
{
if (!PageAligned(address))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
MemoryAttribute attributes = attributeMask | attributeValue;
if (attributes != attributeMask ||
(attributes | MemoryAttribute.Uncached) != MemoryAttribute.Uncached)
{
return KernelResult.InvalidCombination;
}
KProcess process = KernelStatic.GetCurrentProcess();
if (!process.MemoryManager.InsideAddrSpace(address, size))
{
return KernelResult.InvalidMemState;
}
KernelResult result = process.MemoryManager.SetMemoryAttribute(
address,
size,
attributeMask,
attributeValue);
return result;
}
public KernelResult MapMemory(ulong dst, ulong src, ulong size)
{
if (!PageAligned(src | dst))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (src + size <= src || dst + size <= dst)
{
return KernelResult.InvalidMemState;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (!currentProcess.MemoryManager.InsideAddrSpace(src, size))
{
return KernelResult.InvalidMemState;
}
if (currentProcess.MemoryManager.OutsideStackRegion(dst, size) ||
currentProcess.MemoryManager.InsideHeapRegion(dst, size) ||
currentProcess.MemoryManager.InsideAliasRegion(dst, size))
{
return KernelResult.InvalidMemRange;
}
KProcess process = KernelStatic.GetCurrentProcess();
return process.MemoryManager.Map(dst, src, size);
}
public KernelResult UnmapMemory(ulong dst, ulong src, ulong size)
{
if (!PageAligned(src | dst))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (src + size <= src || dst + size <= dst)
{
return KernelResult.InvalidMemState;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (!currentProcess.MemoryManager.InsideAddrSpace(src, size))
{
return KernelResult.InvalidMemState;
}
if (currentProcess.MemoryManager.OutsideStackRegion(dst, size) ||
currentProcess.MemoryManager.InsideHeapRegion(dst, size) ||
currentProcess.MemoryManager.InsideAliasRegion(dst, size))
{
return KernelResult.InvalidMemRange;
}
KProcess process = KernelStatic.GetCurrentProcess();
return process.MemoryManager.Unmap(dst, src, size);
}
public KernelResult QueryMemory(ulong infoPtr, out ulong pageInfo, ulong address)
{
KernelResult result = QueryMemory(out MemoryInfo info, out pageInfo, address);
if (result == KernelResult.Success)
{
return KernelTransfer.KernelToUser(infoPtr, info)
? KernelResult.Success
: KernelResult.InvalidMemState;
}
return result;
}
public KernelResult QueryMemory(out MemoryInfo info, out ulong pageInfo, ulong address)
{
KProcess process = KernelStatic.GetCurrentProcess();
KMemoryInfo blockInfo = process.MemoryManager.QueryMemory(address);
info = new MemoryInfo(
blockInfo.Address,
blockInfo.Size,
blockInfo.State & MemoryState.UserMask,
blockInfo.Attribute,
blockInfo.Permission & KMemoryPermission.UserMask,
blockInfo.IpcRefCount,
blockInfo.DeviceRefCount);
pageInfo = 0;
return KernelResult.Success;
}
public KernelResult MapSharedMemory(int handle, ulong address, ulong size, KMemoryPermission permission)
{
if (!PageAligned(address))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (address + size <= address)
{
return KernelResult.InvalidMemState;
}
if ((permission | KMemoryPermission.Write) != KMemoryPermission.ReadAndWrite)
{
return KernelResult.InvalidPermission;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KSharedMemory sharedMemory = currentProcess.HandleTable.GetObject<KSharedMemory>(handle);
if (sharedMemory == null)
{
return KernelResult.InvalidHandle;
}
if (currentProcess.MemoryManager.IsInvalidRegion(address, size) ||
currentProcess.MemoryManager.InsideHeapRegion(address, size) ||
currentProcess.MemoryManager.InsideAliasRegion(address, size))
{
return KernelResult.InvalidMemRange;
}
return sharedMemory.MapIntoProcess(
currentProcess.MemoryManager,
address,
size,
currentProcess,
permission);
}
public KernelResult UnmapSharedMemory(int handle, ulong address, ulong size)
{
if (!PageAligned(address))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (address + size <= address)
{
return KernelResult.InvalidMemState;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KSharedMemory sharedMemory = currentProcess.HandleTable.GetObject<KSharedMemory>(handle);
if (sharedMemory == null)
{
return KernelResult.InvalidHandle;
}
if (currentProcess.MemoryManager.IsInvalidRegion(address, size) ||
currentProcess.MemoryManager.InsideHeapRegion(address, size) ||
currentProcess.MemoryManager.InsideAliasRegion(address, size))
{
return KernelResult.InvalidMemRange;
}
return sharedMemory.UnmapFromProcess(
currentProcess.MemoryManager,
address,
size,
currentProcess);
}
public KernelResult CreateTransferMemory(out int handle, ulong address, ulong size, KMemoryPermission permission)
{
handle = 0;
if (!PageAligned(address))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (address + size <= address)
{
return KernelResult.InvalidMemState;
}
if (permission > KMemoryPermission.ReadAndWrite || permission == KMemoryPermission.Write)
{
return KernelResult.InvalidPermission;
}
KProcess process = KernelStatic.GetCurrentProcess();
KResourceLimit resourceLimit = process.ResourceLimit;
if (resourceLimit != null && !resourceLimit.Reserve(LimitableResource.TransferMemory, 1))
{
return KernelResult.ResLimitExceeded;
}
void CleanUpForError()
{
resourceLimit?.Release(LimitableResource.TransferMemory, 1);
}
if (!process.MemoryManager.InsideAddrSpace(address, size))
{
CleanUpForError();
return KernelResult.InvalidMemState;
}
KTransferMemory transferMemory = new KTransferMemory(_context);
KernelResult result = transferMemory.Initialize(address, size, permission);
if (result != KernelResult.Success)
{
CleanUpForError();
return result;
}
result = process.HandleTable.GenerateHandle(transferMemory, out handle);
transferMemory.DecrementReferenceCount();
return result;
}
public KernelResult MapTransferMemory(int handle, ulong address, ulong size, KMemoryPermission permission)
{
if (!PageAligned(address))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (address + size <= address)
{
return KernelResult.InvalidMemState;
}
if (permission > KMemoryPermission.ReadAndWrite || permission == KMemoryPermission.Write)
{
return KernelResult.InvalidPermission;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KTransferMemory transferMemory = currentProcess.HandleTable.GetObject<KTransferMemory>(handle);
if (transferMemory == null)
{
return KernelResult.InvalidHandle;
}
if (currentProcess.MemoryManager.IsInvalidRegion(address, size) ||
currentProcess.MemoryManager.InsideHeapRegion(address, size) ||
currentProcess.MemoryManager.InsideAliasRegion(address, size))
{
return KernelResult.InvalidMemRange;
}
return transferMemory.MapIntoProcess(
currentProcess.MemoryManager,
address,
size,
currentProcess,
permission);
}
public KernelResult UnmapTransferMemory(int handle, ulong address, ulong size)
{
if (!PageAligned(address))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (address + size <= address)
{
return KernelResult.InvalidMemState;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KTransferMemory transferMemory = currentProcess.HandleTable.GetObject<KTransferMemory>(handle);
if (transferMemory == null)
{
return KernelResult.InvalidHandle;
}
if (currentProcess.MemoryManager.IsInvalidRegion(address, size) ||
currentProcess.MemoryManager.InsideHeapRegion(address, size) ||
currentProcess.MemoryManager.InsideAliasRegion(address, size))
{
return KernelResult.InvalidMemRange;
}
return transferMemory.UnmapFromProcess(
currentProcess.MemoryManager,
address,
size,
currentProcess);
}
public KernelResult MapPhysicalMemory(ulong address, ulong size)
{
if (!PageAligned(address))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (address + size <= address)
{
return KernelResult.InvalidMemRange;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if ((currentProcess.PersonalMmHeapPagesCount & 0xfffffffffffff) == 0)
{
return KernelResult.InvalidState;
}
if (!currentProcess.MemoryManager.InsideAddrSpace(address, size) ||
currentProcess.MemoryManager.OutsideAliasRegion(address, size))
{
return KernelResult.InvalidMemRange;
}
KProcess process = KernelStatic.GetCurrentProcess();
return process.MemoryManager.MapPhysicalMemory(address, size);
}
public KernelResult UnmapPhysicalMemory(ulong address, ulong size)
{
if (!PageAligned(address))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (address + size <= address)
{
return KernelResult.InvalidMemRange;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if ((currentProcess.PersonalMmHeapPagesCount & 0xfffffffffffff) == 0)
{
return KernelResult.InvalidState;
}
if (!currentProcess.MemoryManager.InsideAddrSpace(address, size) ||
currentProcess.MemoryManager.OutsideAliasRegion(address, size))
{
return KernelResult.InvalidMemRange;
}
KProcess process = KernelStatic.GetCurrentProcess();
return process.MemoryManager.UnmapPhysicalMemory(address, size);
}
public KernelResult MapProcessCodeMemory(int handle, ulong dst, ulong src, ulong size)
{
if (!PageAligned(dst) || !PageAligned(src))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KProcess targetProcess = currentProcess.HandleTable.GetObject<KProcess>(handle);
if (targetProcess == null)
{
return KernelResult.InvalidHandle;
}
if (targetProcess.MemoryManager.OutsideAddrSpace(dst, size) ||
targetProcess.MemoryManager.OutsideAddrSpace(src, size) ||
targetProcess.MemoryManager.InsideAliasRegion(dst, size) ||
targetProcess.MemoryManager.InsideHeapRegion(dst, size))
{
return KernelResult.InvalidMemRange;
}
if (size + dst <= dst || size + src <= src)
{
return KernelResult.InvalidMemState;
}
return targetProcess.MemoryManager.MapProcessCodeMemory(dst, src, size);
}
public KernelResult UnmapProcessCodeMemory(int handle, ulong dst, ulong src, ulong size)
{
if (!PageAligned(dst) || !PageAligned(src))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KProcess targetProcess = currentProcess.HandleTable.GetObject<KProcess>(handle);
if (targetProcess == null)
{
return KernelResult.InvalidHandle;
}
if (targetProcess.MemoryManager.OutsideAddrSpace(dst, size) ||
targetProcess.MemoryManager.OutsideAddrSpace(src, size) ||
targetProcess.MemoryManager.InsideAliasRegion(dst, size) ||
targetProcess.MemoryManager.InsideHeapRegion(dst, size))
{
return KernelResult.InvalidMemRange;
}
if (size + dst <= dst || size + src <= src)
{
return KernelResult.InvalidMemState;
}
return targetProcess.MemoryManager.UnmapProcessCodeMemory(dst, src, size);
}
public KernelResult SetProcessMemoryPermission(int handle, ulong src, ulong size, KMemoryPermission permission)
{
if (!PageAligned(src))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (permission != KMemoryPermission.None &&
permission != KMemoryPermission.Read &&
permission != KMemoryPermission.ReadAndWrite &&
permission != KMemoryPermission.ReadAndExecute)
{
return KernelResult.InvalidPermission;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KProcess targetProcess = currentProcess.HandleTable.GetObject<KProcess>(handle);
if (targetProcess == null)
{
return KernelResult.InvalidHandle;
}
if (targetProcess.MemoryManager.OutsideAddrSpace(src, size))
{
return KernelResult.InvalidMemState;
}
return targetProcess.MemoryManager.SetProcessMemoryPermission(src, size, permission);
}
private static bool PageAligned(ulong address)
{
return (address & (KPageTableBase.PageSize - 1)) == 0;
}
// System
public KernelResult TerminateProcess(int handle)
{
KProcess process = KernelStatic.GetCurrentProcess();
process = process.HandleTable.GetObject<KProcess>(handle);
KernelResult result;
if (process != null)
{
if (process == KernelStatic.GetCurrentProcess())
{
result = KernelResult.Success;
process.DecrementToZeroWhileTerminatingCurrent();
}
else
{
result = process.Terminate();
process.DecrementReferenceCount();
}
}
else
{
result = KernelResult.InvalidHandle;
}
return result;
}
public void ExitProcess()
{
KernelStatic.GetCurrentProcess().TerminateCurrentProcess();
}
public KernelResult SignalEvent(int handle)
{
KProcess process = KernelStatic.GetCurrentProcess();
KWritableEvent writableEvent = process.HandleTable.GetObject<KWritableEvent>(handle);
KernelResult result;
if (writableEvent != null)
{
writableEvent.Signal();
result = KernelResult.Success;
}
else
{
result = KernelResult.InvalidHandle;
}
return result;
}
public KernelResult ClearEvent(int handle)
{
KernelResult result;
KProcess process = KernelStatic.GetCurrentProcess();
KWritableEvent writableEvent = process.HandleTable.GetObject<KWritableEvent>(handle);
if (writableEvent == null)
{
KReadableEvent readableEvent = process.HandleTable.GetObject<KReadableEvent>(handle);
result = readableEvent?.Clear() ?? KernelResult.InvalidHandle;
}
else
{
result = writableEvent.Clear();
}
return result;
}
public KernelResult CloseHandle(int handle)
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
return currentProcess.HandleTable.CloseHandle(handle) ? KernelResult.Success : KernelResult.InvalidHandle;
}
public KernelResult ResetSignal(int handle)
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KReadableEvent readableEvent = currentProcess.HandleTable.GetObject<KReadableEvent>(handle);
KernelResult result;
if (readableEvent != null)
{
result = readableEvent.ClearIfSignaled();
}
else
{
KProcess process = currentProcess.HandleTable.GetKProcess(handle);
if (process != null)
{
result = process.ClearIfNotExited();
}
else
{
result = KernelResult.InvalidHandle;
}
}
return result;
}
public ulong GetSystemTick()
{
return KernelStatic.GetCurrentThread().Context.CntpctEl0;
}
public void Break(ulong reason)
{
KThread currentThread = KernelStatic.GetCurrentThread();
if ((reason & (1UL << 31)) == 0)
{
currentThread.PrintGuestStackTrace();
currentThread.PrintGuestRegisterPrintout();
// As the process is exiting, this is probably caused by emulation termination.
if (currentThread.Owner.State == ProcessState.Exiting)
{
return;
}
// TODO: Debug events.
currentThread.Owner.TerminateCurrentProcess();
throw new GuestBrokeExecutionException();
}
else
{
Logger.Debug?.Print(LogClass.KernelSvc, "Debugger triggered.");
}
}
public void OutputDebugString(ulong strPtr, ulong size)
{
KProcess process = KernelStatic.GetCurrentProcess();
string str = MemoryHelper.ReadAsciiString(process.CpuMemory, strPtr, (long)size);
Logger.Warning?.Print(LogClass.KernelSvc, str);
}
public KernelResult GetInfo(out ulong value, InfoType id, int handle, long subId)
{
value = 0;
switch (id)
{
case InfoType.CoreMask:
case InfoType.PriorityMask:
case InfoType.AliasRegionAddress:
case InfoType.AliasRegionSize:
case InfoType.HeapRegionAddress:
case InfoType.HeapRegionSize:
case InfoType.TotalMemorySize:
case InfoType.UsedMemorySize:
case InfoType.AslrRegionAddress:
case InfoType.AslrRegionSize:
case InfoType.StackRegionAddress:
case InfoType.StackRegionSize:
case InfoType.SystemResourceSizeTotal:
case InfoType.SystemResourceSizeUsed:
case InfoType.ProgramId:
case InfoType.UserExceptionContextAddress:
case InfoType.TotalNonSystemMemorySize:
case InfoType.UsedNonSystemMemorySize:
case InfoType.IsApplication:
case InfoType.FreeThreadCount:
{
if (subId != 0)
{
return KernelResult.InvalidCombination;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KProcess process = currentProcess.HandleTable.GetKProcess(handle);
if (process == null)
{
return KernelResult.InvalidHandle;
}
switch (id)
{
case InfoType.CoreMask: value = process.Capabilities.AllowedCpuCoresMask; break;
case InfoType.PriorityMask: value = process.Capabilities.AllowedThreadPriosMask; break;
case InfoType.AliasRegionAddress: value = process.MemoryManager.AliasRegionStart; break;
case InfoType.AliasRegionSize:
value = (process.MemoryManager.AliasRegionEnd -
process.MemoryManager.AliasRegionStart); break;
case InfoType.HeapRegionAddress: value = process.MemoryManager.HeapRegionStart; break;
case InfoType.HeapRegionSize:
value = (process.MemoryManager.HeapRegionEnd -
process.MemoryManager.HeapRegionStart); break;
case InfoType.TotalMemorySize: value = process.GetMemoryCapacity(); break;
case InfoType.UsedMemorySize: value = process.GetMemoryUsage(); break;
case InfoType.AslrRegionAddress: value = process.MemoryManager.GetAddrSpaceBaseAddr(); break;
case InfoType.AslrRegionSize: value = process.MemoryManager.GetAddrSpaceSize(); break;
case InfoType.StackRegionAddress: value = process.MemoryManager.StackRegionStart; break;
case InfoType.StackRegionSize:
value = (process.MemoryManager.StackRegionEnd -
process.MemoryManager.StackRegionStart); break;
case InfoType.SystemResourceSizeTotal: value = process.PersonalMmHeapPagesCount * KPageTableBase.PageSize; break;
case InfoType.SystemResourceSizeUsed:
if (process.PersonalMmHeapPagesCount != 0)
{
value = process.MemoryManager.GetMmUsedPages() * KPageTableBase.PageSize;
}
break;
case InfoType.ProgramId: value = process.TitleId; break;
case InfoType.UserExceptionContextAddress: value = process.UserExceptionContextAddress; break;
case InfoType.TotalNonSystemMemorySize: value = process.GetMemoryCapacityWithoutPersonalMmHeap(); break;
case InfoType.UsedNonSystemMemorySize: value = process.GetMemoryUsageWithoutPersonalMmHeap(); break;
case InfoType.IsApplication: value = process.IsApplication ? 1UL : 0UL; break;
case InfoType.FreeThreadCount:
if (process.ResourceLimit != null)
{
value = (ulong)(process.ResourceLimit.GetLimitValue(LimitableResource.Thread) -
process.ResourceLimit.GetCurrentValue(LimitableResource.Thread));
}
else
{
value = 0;
}
break;
}
break;
}
case InfoType.DebuggerAttached:
{
if (handle != 0)
{
return KernelResult.InvalidHandle;
}
if (subId != 0)
{
return KernelResult.InvalidCombination;
}
value = KernelStatic.GetCurrentProcess().Debug ? 1UL : 0UL;
break;
}
case InfoType.ResourceLimit:
{
if (handle != 0)
{
return KernelResult.InvalidHandle;
}
if (subId != 0)
{
return KernelResult.InvalidCombination;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (currentProcess.ResourceLimit != null)
{
KHandleTable handleTable = currentProcess.HandleTable;
KResourceLimit resourceLimit = currentProcess.ResourceLimit;
KernelResult result = handleTable.GenerateHandle(resourceLimit, out int resLimHandle);
if (result != KernelResult.Success)
{
return result;
}
value = (uint)resLimHandle;
}
break;
}
case InfoType.IdleTickCount:
{
if (handle != 0)
{
return KernelResult.InvalidHandle;
}
int currentCore = KernelStatic.GetCurrentThread().CurrentCore;
if (subId != -1 && subId != currentCore)
{
return KernelResult.InvalidCombination;
}
value = (ulong)KTimeManager.ConvertHostTicksToTicks(_context.Schedulers[currentCore].TotalIdleTimeTicks);
break;
}
case InfoType.RandomEntropy:
{
if (handle != 0)
{
return KernelResult.InvalidHandle;
}
if ((ulong)subId > 3)
{
return KernelResult.InvalidCombination;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
value = currentProcess.RandomEntropy[subId];
break;
}
case InfoType.ThreadTickCount:
{
if (subId < -1 || subId > 3)
{
return KernelResult.InvalidCombination;
}
KThread thread = KernelStatic.GetCurrentProcess().HandleTable.GetKThread(handle);
if (thread == null)
{
return KernelResult.InvalidHandle;
}
KThread currentThread = KernelStatic.GetCurrentThread();
int currentCore = currentThread.CurrentCore;
if (subId != -1 && subId != currentCore)
{
return KernelResult.Success;
}
KScheduler scheduler = _context.Schedulers[currentCore];
long timeDelta = PerformanceCounter.ElapsedTicks - scheduler.LastContextSwitchTime;
if (subId != -1)
{
value = (ulong)KTimeManager.ConvertHostTicksToTicks(timeDelta);
}
else
{
long totalTimeRunning = thread.TotalTimeRunning;
if (thread == currentThread)
{
totalTimeRunning += timeDelta;
}
value = (ulong)KTimeManager.ConvertHostTicksToTicks(totalTimeRunning);
}
break;
}
default: return KernelResult.InvalidEnumValue;
}
return KernelResult.Success;
}
public KernelResult CreateEvent(out int wEventHandle, out int rEventHandle)
{
KEvent Event = new KEvent(_context);
KProcess process = KernelStatic.GetCurrentProcess();
KernelResult result = process.HandleTable.GenerateHandle(Event.WritableEvent, out wEventHandle);
if (result == KernelResult.Success)
{
result = process.HandleTable.GenerateHandle(Event.ReadableEvent, out rEventHandle);
if (result != KernelResult.Success)
{
process.HandleTable.CloseHandle(wEventHandle);
}
}
else
{
rEventHandle = 0;
}
return result;
}
public KernelResult GetProcessList(out int count, ulong address, int maxCount)
{
count = 0;
if ((maxCount >> 28) != 0)
{
return KernelResult.MaximumExceeded;
}
if (maxCount != 0)
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
ulong copySize = (ulong)maxCount * 8;
if (address + copySize <= address)
{
return KernelResult.InvalidMemState;
}
if (currentProcess.MemoryManager.OutsideAddrSpace(address, copySize))
{
return KernelResult.InvalidMemState;
}
}
int copyCount = 0;
lock (_context.Processes)
{
foreach (KProcess process in _context.Processes.Values)
{
if (copyCount < maxCount)
{
if (!KernelTransfer.KernelToUser(address + (ulong)copyCount * 8, process.Pid))
{
return KernelResult.UserCopyFailed;
}
}
copyCount++;
}
}
count = copyCount;
return KernelResult.Success;
}
public KernelResult GetSystemInfo(out long value, uint id, int handle, long subId)
{
value = 0;
if (id > 2)
{
return KernelResult.InvalidEnumValue;
}
if (handle != 0)
{
return KernelResult.InvalidHandle;
}
if (id < 2)
{
if ((ulong)subId > 3)
{
return KernelResult.InvalidCombination;
}
KMemoryRegionManager region = _context.MemoryManager.MemoryRegions[subId];
switch (id)
{
// Memory region capacity.
case 0: value = (long)region.Size; break;
// Memory region free space.
case 1:
{
ulong freePagesCount = region.GetFreePages();
value = (long)(freePagesCount * KPageTableBase.PageSize);
break;
}
}
}
else /* if (Id == 2) */
{
if ((ulong)subId > 1)
{
return KernelResult.InvalidCombination;
}
switch (subId)
{
case 0: value = _context.PrivilegedProcessLowestId; break;
case 1: value = _context.PrivilegedProcessHighestId; break;
}
}
return KernelResult.Success;
}
public KernelResult GetResourceLimitLimitValue(out long limitValue, int handle, LimitableResource resource)
{
limitValue = 0;
if (resource >= LimitableResource.Count)
{
return KernelResult.InvalidEnumValue;
}
KResourceLimit resourceLimit = KernelStatic.GetCurrentProcess().HandleTable.GetObject<KResourceLimit>(handle);
if (resourceLimit == null)
{
return KernelResult.InvalidHandle;
}
limitValue = resourceLimit.GetLimitValue(resource);
return KernelResult.Success;
}
public KernelResult GetResourceLimitCurrentValue(out long limitValue, int handle, LimitableResource resource)
{
limitValue = 0;
if (resource >= LimitableResource.Count)
{
return KernelResult.InvalidEnumValue;
}
KResourceLimit resourceLimit = KernelStatic.GetCurrentProcess().HandleTable.GetObject<KResourceLimit>(handle);
if (resourceLimit == null)
{
return KernelResult.InvalidHandle;
}
limitValue = resourceLimit.GetCurrentValue(resource);
return KernelResult.Success;
}
public KernelResult GetResourceLimitPeakValue(out long peak, int handle, LimitableResource resource)
{
peak = 0;
if (resource >= LimitableResource.Count)
{
return KernelResult.InvalidEnumValue;
}
KResourceLimit resourceLimit = KernelStatic.GetCurrentProcess().HandleTable.GetObject<KResourceLimit>(handle);
if (resourceLimit == null)
{
return KernelResult.InvalidHandle;
}
peak = resourceLimit.GetPeakValue(resource);
return KernelResult.Success;
}
public KernelResult CreateResourceLimit(out int handle)
{
KResourceLimit limit = new KResourceLimit(_context);
KProcess process = KernelStatic.GetCurrentProcess();
return process.HandleTable.GenerateHandle(limit, out handle);
}
public KernelResult SetResourceLimitLimitValue(int handle, LimitableResource resource, long limitValue)
{
if (resource >= LimitableResource.Count)
{
return KernelResult.InvalidEnumValue;
}
KResourceLimit resourceLimit = KernelStatic.GetCurrentProcess().HandleTable.GetObject<KResourceLimit>(handle);
if (resourceLimit == null)
{
return KernelResult.InvalidHandle;
}
return resourceLimit.SetLimitValue(resource, limitValue);
}
// Thread
public KernelResult CreateThread(
out int handle,
ulong entrypoint,
ulong argsPtr,
ulong stackTop,
int priority,
int cpuCore)
{
handle = 0;
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (cpuCore == -2)
{
cpuCore = currentProcess.DefaultCpuCore;
}
if ((uint)cpuCore >= KScheduler.CpuCoresCount || !currentProcess.IsCpuCoreAllowed(cpuCore))
{
return KernelResult.InvalidCpuCore;
}
if ((uint)priority >= KScheduler.PrioritiesCount || !currentProcess.IsPriorityAllowed(priority))
{
return KernelResult.InvalidPriority;
}
long timeout = KTimeManager.ConvertMillisecondsToNanoseconds(100);
if (currentProcess.ResourceLimit != null &&
!currentProcess.ResourceLimit.Reserve(LimitableResource.Thread, 1, timeout))
{
return KernelResult.ResLimitExceeded;
}
KThread thread = new KThread(_context);
KernelResult result = currentProcess.InitializeThread(
thread,
entrypoint,
argsPtr,
stackTop,
priority,
cpuCore);
if (result == KernelResult.Success)
{
KProcess process = KernelStatic.GetCurrentProcess();
result = process.HandleTable.GenerateHandle(thread, out handle);
}
else
{
currentProcess.ResourceLimit?.Release(LimitableResource.Thread, 1);
}
thread.DecrementReferenceCount();
return result;
}
public KernelResult StartThread(int handle)
{
KProcess process = KernelStatic.GetCurrentProcess();
KThread thread = process.HandleTable.GetKThread(handle);
if (thread != null)
{
thread.IncrementReferenceCount();
KernelResult result = thread.Start();
if (result == KernelResult.Success)
{
thread.IncrementReferenceCount();
}
thread.DecrementReferenceCount();
return result;
}
else
{
return KernelResult.InvalidHandle;
}
}
public void ExitThread()
{
KThread currentThread = KernelStatic.GetCurrentThread();
currentThread.Exit();
}
public void SleepThread(long timeout)
{
if (timeout < 1)
{
switch (timeout)
{
case 0: KScheduler.Yield(_context); break;
case -1: KScheduler.YieldWithLoadBalancing(_context); break;
case -2: KScheduler.YieldToAnyThread(_context); break;
}
}
else
{
KernelStatic.GetCurrentThread().Sleep(timeout + KTimeManager.DefaultTimeIncrementNanoseconds);
}
}
public KernelResult GetThreadPriority(out int priority, int handle)
{
KProcess process = KernelStatic.GetCurrentProcess();
KThread thread = process.HandleTable.GetKThread(handle);
if (thread != null)
{
priority = thread.DynamicPriority;
return KernelResult.Success;
}
else
{
priority = 0;
return KernelResult.InvalidHandle;
}
}
public KernelResult SetThreadPriority(int handle, int priority)
{
// TODO: NPDM check.
KProcess process = KernelStatic.GetCurrentProcess();
KThread thread = process.HandleTable.GetKThread(handle);
if (thread == null)
{
return KernelResult.InvalidHandle;
}
thread.SetPriority(priority);
return KernelResult.Success;
}
public KernelResult GetThreadCoreMask(out int preferredCore, out ulong affinityMask, int handle)
{
KProcess process = KernelStatic.GetCurrentProcess();
KThread thread = process.HandleTable.GetKThread(handle);
if (thread != null)
{
preferredCore = thread.PreferredCore;
affinityMask = thread.AffinityMask;
return KernelResult.Success;
}
else
{
preferredCore = 0;
affinityMask = 0;
return KernelResult.InvalidHandle;
}
}
public KernelResult SetThreadCoreMask(int handle, int preferredCore, ulong affinityMask)
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (preferredCore == -2)
{
preferredCore = currentProcess.DefaultCpuCore;
affinityMask = 1UL << preferredCore;
}
else
{
if ((currentProcess.Capabilities.AllowedCpuCoresMask | affinityMask) !=
currentProcess.Capabilities.AllowedCpuCoresMask)
{
return KernelResult.InvalidCpuCore;
}
if (affinityMask == 0)
{
return KernelResult.InvalidCombination;
}
if ((uint)preferredCore > 3)
{
if ((preferredCore | 2) != -1)
{
return KernelResult.InvalidCpuCore;
}
}
else if ((affinityMask & (1UL << preferredCore)) == 0)
{
return KernelResult.InvalidCombination;
}
}
KProcess process = KernelStatic.GetCurrentProcess();
KThread thread = process.HandleTable.GetKThread(handle);
if (thread == null)
{
return KernelResult.InvalidHandle;
}
return thread.SetCoreAndAffinityMask(preferredCore, affinityMask);
}
public int GetCurrentProcessorNumber()
{
return KernelStatic.GetCurrentThread().CurrentCore;
}
public KernelResult GetThreadId(out ulong threadUid, int handle)
{
KProcess process = KernelStatic.GetCurrentProcess();
KThread thread = process.HandleTable.GetKThread(handle);
if (thread != null)
{
threadUid = thread.ThreadUid;
return KernelResult.Success;
}
else
{
threadUid = 0;
return KernelResult.InvalidHandle;
}
}
public KernelResult SetThreadActivity(int handle, bool pause)
{
KProcess process = KernelStatic.GetCurrentProcess();
KThread thread = process.HandleTable.GetObject<KThread>(handle);
if (thread == null)
{
return KernelResult.InvalidHandle;
}
if (thread.Owner != process)
{
return KernelResult.InvalidHandle;
}
if (thread == KernelStatic.GetCurrentThread())
{
return KernelResult.InvalidThread;
}
return thread.SetActivity(pause);
}
public KernelResult GetThreadContext3(ulong address, int handle)
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
KThread currentThread = KernelStatic.GetCurrentThread();
KThread thread = currentProcess.HandleTable.GetObject<KThread>(handle);
if (thread == null)
{
return KernelResult.InvalidHandle;
}
if (thread.Owner != currentProcess)
{
return KernelResult.InvalidHandle;
}
if (currentThread == thread)
{
return KernelResult.InvalidThread;
}
KernelResult result = thread.GetThreadContext3(out ThreadContext context);
if (result == KernelResult.Success)
{
return KernelTransfer.KernelToUser(address, context)
? KernelResult.Success
: KernelResult.InvalidMemState;
}
return result;
}
// Thread synchronization
public KernelResult WaitSynchronization(out int handleIndex, ulong handlesPtr, int handlesCount, long timeout)
{
handleIndex = 0;
if ((uint)handlesCount > KThread.MaxWaitSyncObjects)
{
return KernelResult.MaximumExceeded;
}
KThread currentThread = KernelStatic.GetCurrentThread();
var syncObjs = new Span<KSynchronizationObject>(currentThread.WaitSyncObjects).Slice(0, handlesCount);
if (handlesCount != 0)
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (currentProcess.MemoryManager.AddrSpaceStart > handlesPtr)
{
return KernelResult.UserCopyFailed;
}
long handlesSize = handlesCount * 4;
if (handlesPtr + (ulong)handlesSize <= handlesPtr)
{
return KernelResult.UserCopyFailed;
}
if (handlesPtr + (ulong)handlesSize - 1 > currentProcess.MemoryManager.AddrSpaceEnd - 1)
{
return KernelResult.UserCopyFailed;
}
Span<int> handles = new Span<int>(currentThread.WaitSyncHandles).Slice(0, handlesCount);
if (!KernelTransfer.UserToKernelArray(handlesPtr, handles))
{
return KernelResult.UserCopyFailed;
}
int processedHandles = 0;
for (; processedHandles < handlesCount; processedHandles++)
{
KSynchronizationObject syncObj = currentProcess.HandleTable.GetObject<KSynchronizationObject>(handles[processedHandles]);
if (syncObj == null)
{
break;
}
syncObjs[processedHandles] = syncObj;
syncObj.IncrementReferenceCount();
}
if (processedHandles != handlesCount)
{
// One or more handles are invalid.
for (int index = 0; index < processedHandles; index++)
{
currentThread.WaitSyncObjects[index].DecrementReferenceCount();
}
return KernelResult.InvalidHandle;
}
}
if (timeout > 0)
{
timeout += KTimeManager.DefaultTimeIncrementNanoseconds;
}
KernelResult result = _context.Synchronization.WaitFor(syncObjs, timeout, out handleIndex);
if (result == KernelResult.PortRemoteClosed)
{
result = KernelResult.Success;
}
for (int index = 0; index < handlesCount; index++)
{
currentThread.WaitSyncObjects[index].DecrementReferenceCount();
}
return result;
}
public KernelResult CancelSynchronization(int handle)
{
KProcess process = KernelStatic.GetCurrentProcess();
KThread thread = process.HandleTable.GetKThread(handle);
if (thread == null)
{
return KernelResult.InvalidHandle;
}
thread.CancelSynchronization();
return KernelResult.Success;
}
public KernelResult ArbitrateLock(int ownerHandle, ulong mutexAddress, int requesterHandle)
{
if (IsPointingInsideKernel(mutexAddress))
{
return KernelResult.InvalidMemState;
}
if (IsAddressNotWordAligned(mutexAddress))
{
return KernelResult.InvalidAddress;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
return currentProcess.AddressArbiter.ArbitrateLock(ownerHandle, mutexAddress, requesterHandle);
}
public KernelResult ArbitrateUnlock(ulong mutexAddress)
{
if (IsPointingInsideKernel(mutexAddress))
{
return KernelResult.InvalidMemState;
}
if (IsAddressNotWordAligned(mutexAddress))
{
return KernelResult.InvalidAddress;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
return currentProcess.AddressArbiter.ArbitrateUnlock(mutexAddress);
}
public KernelResult WaitProcessWideKeyAtomic(
ulong mutexAddress,
ulong condVarAddress,
int handle,
long timeout)
{
if (IsPointingInsideKernel(mutexAddress))
{
return KernelResult.InvalidMemState;
}
if (IsAddressNotWordAligned(mutexAddress))
{
return KernelResult.InvalidAddress;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (timeout > 0)
{
timeout += KTimeManager.DefaultTimeIncrementNanoseconds;
}
return currentProcess.AddressArbiter.WaitProcessWideKeyAtomic(
mutexAddress,
condVarAddress,
handle,
timeout);
}
public KernelResult SignalProcessWideKey(ulong address, int count)
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
currentProcess.AddressArbiter.SignalProcessWideKey(address, count);
return KernelResult.Success;
}
public KernelResult WaitForAddress(ulong address, ArbitrationType type, int value, long timeout)
{
if (IsPointingInsideKernel(address))
{
return KernelResult.InvalidMemState;
}
if (IsAddressNotWordAligned(address))
{
return KernelResult.InvalidAddress;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (timeout > 0)
{
timeout += KTimeManager.DefaultTimeIncrementNanoseconds;
}
return type switch
{
ArbitrationType.WaitIfLessThan
=> currentProcess.AddressArbiter.WaitForAddressIfLessThan(address, value, false, timeout),
ArbitrationType.DecrementAndWaitIfLessThan
=> currentProcess.AddressArbiter.WaitForAddressIfLessThan(address, value, true, timeout),
ArbitrationType.WaitIfEqual
=> currentProcess.AddressArbiter.WaitForAddressIfEqual(address, value, timeout),
_ => KernelResult.InvalidEnumValue,
};
}
public KernelResult SignalToAddress(ulong address, SignalType type, int value, int count)
{
if (IsPointingInsideKernel(address))
{
return KernelResult.InvalidMemState;
}
if (IsAddressNotWordAligned(address))
{
return KernelResult.InvalidAddress;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
return type switch
{
SignalType.Signal
=> currentProcess.AddressArbiter.Signal(address, count),
SignalType.SignalAndIncrementIfEqual
=> currentProcess.AddressArbiter.SignalAndIncrementIfEqual(address, value, count),
SignalType.SignalAndModifyIfEqual
=> currentProcess.AddressArbiter.SignalAndModifyIfEqual(address, value, count),
_ => KernelResult.InvalidEnumValue
};
}
public KernelResult SynchronizePreemptionState()
{
KernelStatic.GetCurrentThread().SynchronizePreemptionState();
return KernelResult.Success;
}
private bool IsPointingInsideKernel(ulong address)
{
return (address + 0x1000000000) < 0xffffff000;
}
private bool IsAddressNotWordAligned(ulong address)
{
return (address & 3) != 0;
}
}
}