ExAcquireSpinLockExclusive

NTSTATUS __fastcall ExAcquireSpinLockExclusive(INT64 *SpinLock){
  UINT8 CurrentIrql; 
  int v3; 
  signed __int32 v4; 
  signed __int32 v6; 

  CurrentIrql = KeGetCurrentIrql();
  __writecr8(2ui64);
  v3 = 0;
  if( _interlockedbittestandset((volatile signed __int32 *)SpinLock, 0x1Fu) )
    v3 = ExpWaitForSpinLockExclusiveAndAcquire(SpinLock, CurrentIrql);
  v4 = *(_DWORD *)SpinLock;
  while( (v4 & 0xBFFFFFFF) != 0x80000000 )
  {
    if( (v4 & 0x40000000) == 0 )
    {
      v6 = v4;
      v4 = _InterlockedCompareExchange((volatile signed __int32 *)SpinLock, v4 | 0x40000000, v4);
      if( v6 != v4 )
        continue;
    }
    ++v3;
    _mm_pause();
    v4 = *(_DWORD *)SpinLock;
  }
  return CurrentIrql;
}

Referenced by: