Kernel/Threads: Add a new thread status that will allow using a Kernel::Event to put a guest thread to sleep inside an HLE handler until said event is signaled.

src/core/hle/kernel/thread.cpp

@@ -276,6 +276,7 @@ void Thread::ResumeFromWait() {
     switch (status) {
     case THREADSTATUS_WAIT_SYNCH_ALL:
     case THREADSTATUS_WAIT_SYNCH_ANY:
+    case THREADSTATUS_WAIT_HLE_EVENT:
     case THREADSTATUS_WAIT_ARB:
     case THREADSTATUS_WAIT_SLEEP:
         break;

src/core/hle/kernel/thread.h

@@ -37,6 +37,7 @@ enum ThreadStatus {
     THREADSTATUS_WAIT_SLEEP,     ///< Waiting due to a SleepThread SVC
     THREADSTATUS_WAIT_SYNCH_ANY, ///< Waiting due to WaitSynch1 or WaitSynchN with wait_all = false
     THREADSTATUS_WAIT_SYNCH_ALL, ///< Waiting due to WaitSynchronizationN with wait_all = true
+    THREADSTATUS_WAIT_HLE_EVENT, ///< Waiting due to an HLE handler pausing the thread
     THREADSTATUS_DORMANT,        ///< Created but not yet made ready
     THREADSTATUS_DEAD            ///< Run to completion, or forcefully terminated
 };

src/core/hle/kernel/wait_object.cpp

@@ -39,7 +39,8 @@ SharedPtr<Thread> WaitObject::GetHighestPriorityReadyThread() {
     for (const auto& thread : waiting_threads) {
         // The list of waiting threads must not contain threads that are not waiting to be awakened.
         ASSERT_MSG(thread->status == THREADSTATUS_WAIT_SYNCH_ANY ||
-                       thread->status == THREADSTATUS_WAIT_SYNCH_ALL,
+                       thread->status == THREADSTATUS_WAIT_SYNCH_ALL ||
+                       thread->status == THREADSTATUS_WAIT_HLE_EVENT,
                    "Inconsistent thread statuses in waiting_threads");
 
         if (thread->current_priority >= candidate_priority)