ExAcquireResourceExclusiveLite

INT8 __fastcall ExAcquireResourceExclusiveLite(UINT64 a1, INT8 a2, INT64 a3){
  unsigned __int8 v5; 
  __int16 v6; 
  _ETHREAD *v7; 
  INT64 v8; 
  CHAR v9; 
  int v10; 
  unsigned __int8 CurrentIrql; 
  _ETHREAD *CurrentThread; 
  _KLOCK_QUEUE_HANDLE LockHandle; 
  INT64 Object[2]; 
  __int128 v16; 
  __int128 v17; 

  v5 = (a2 == 0) + 1;
  if( (*(_WORD *)(a1 + 26) & 0x41) == 1 )
    KeBugCheckEx(0x1C6u, (PVOID)0xF, (PVOID)a1, 0i64, 0i64);
  v6 = *(_WORD *)(a1 + 26) & 1;
  if( v6 )
  {
    CurrentIrql = KeGetCurrentIrql();
    CurrentThread = (_ETHREAD *)KeGetCurrentThread();
    if( CurrentIrql > v5 )
      KeBugCheckEx(0x1C6u, 0i64, (PVOID)CurrentIrql, (PVOID)v5, 0i64);
    if( CurrentIrql >= 2u && (KeGetPcr()->Prcb._bf_0 & 0x10001) != 0 )
      KeBugCheckEx(0x1C6u, (PVOID)5, 0i64, 0i64, 0i64);
    if( (CurrentThread->Tcb.ApcState.InProgressFlags & 2) != 0 )
      KeBugCheckEx(0x1C6u, (PVOID)6, 0i64, 0i64, 0i64);
    if( !CurrentIrql && (CurrentThread->Tcb._bf_0 & 0x400) == 0 && !CurrentThread->Tcb.WaitBlock[3].SpareLong )
      KeBugCheckEx(0x1C6u, (PVOID)7, 0i64, 0i64, 0i64);
  }
  if( !v6 )
  {
    memset(&LockHandle, 0, sizeof(LockHandle));
    *(_OWORD *)Object = 0i64;
    v16 = 0i64;
    v17 = 0i64;
    v7 = (_ETHREAD *)KeGetCurrentThread();
    __incgsdword(0x8678u);
    KeAcquireInStackQueuedSpinLock((PKSPIN_LOCK)(a1 + 96), &LockHandle);
    v9 = ExpTryAcquireResourceExclusive(a1);
    if( v9 )
    {
      v10 = *(_DWORD *)(a1 + 56) & 7;
      *(_QWORD *)(a1 + 48) = v7;
      *(_DWORD *)(a1 + 56) = v10 | 8;
      KeReleaseInStackQueuedSpinLockFromDpcLevel(&LockHandle);
      __writecr8(LockHandle.OldIrql);
      __incgsdword(0x867Cu);
      __incgsdword(0x8664u);
    }
    else
    {
      if( *(char *)(a1 + 26) < 0 && *(_ETHREAD **)(a1 + 48) == v7 )
      {
        *(_DWORD *)(a1 + 56) += 8;
        KeReleaseInStackQueuedSpinLockFromDpcLevel(&LockHandle);
        __writecr8(LockHandle.OldIrql);
        __incgsdword(0x8680u);
        __incgsdword(0x8664u);
      }
      else
      {
        if( !a2 )
        {
          KeReleaseInStackQueuedSpinLockFromDpcLevel(&LockHandle);
          __writecr8(LockHandle.OldIrql);
          __incgsdword(0x8688u);
          return 0;
        }
        ExpPrepareToWaitForResourceExclusive(v8, (INT64)v7, (INT64)Object);
        KeReleaseInStackQueuedSpinLockFromDpcLevel(&LockHandle);
        __writecr8(LockHandle.OldIrql);
        __incgsdword(0x8684u);
        ExpApplyPrewaitBoost();
        ExpWaitForResource((_ERESOURCE *)a1, Object);
        ExpBoostIoAfterAcquire((_ERESOURCE *)a1, (UINT64)v7);
        __incgsdword(0x867Cu);
        __incgsdword(0x8664u);
      }
      return 1;
    }
    return v9;
  }
  return ExpFastResourceLegacyAcquireExclusive((PVOID)a1);
}

Referenced by: