MiLockProtoPoolPage

_MMPFN *__stdcall MiLockProtoPoolPage(_MMPTE *ProtoPte, UINT8 *PageIrql){
  UINT64 *v3; 
  union {$8D9ED47C9F2F2CD645B633E301950288 __s0;unsigned __int64 EntireField;} *p_u4; 
  UINT64 v5; 
  UINT64 v6; 
  __int64 v7; 
  _MMPFN *v8; 
  UINT8 CurrentIrql; 
  UINT64 v10; 
  UINT64 SpinCount; 
  UINT64 v13; 
  UINT64 v14; 

  v3 = (unsigned __int64 *)((char *)&MmGetPteBase()->u.Long + (((unsigned __int64)ProtoPte >> 9) & 0x7FFFFFFFF8i64));
  p_u4 = &MmGetPfnDb()->u4;
  v14 = *v3;
  v5 = v14 & 1;
  do
  {
    if( !v5 )
      return 0i64;
    v6 = v14;
    if( (v14 & 0x200) != 0 )
      return 0i64;
    MiPteInShadowRange((UINT64)&v14);
    v7 = (v6 >> 12) & 0xFFFFFFFFFi64;
  }
  while( (p_u4[6 * v7]._bf_0 & 0x4000000000000i64) == 0 );
  v8 = &MmGetPfnDb()[v7];
  if( PageIrql )
  {
    CurrentIrql = KeGetCurrentIrql();
    __writecr8(2ui64);
    LODWORD(SpinCount) = 0;
    while( _interlockedbittestandset64((volatile signed __int32 *)&v8->u2, 0x3Fui64) )
    {
      do
        KeYieldProcessorEx(&SpinCount);
      while( v8->u2._bf_0 < 0 );
    }
  }
  else
  {
    LODWORD(v13) = 0;
    CurrentIrql = 17;
    while( _interlockedbittestandset64((volatile signed __int32 *)&v8->u2, 0x3Fui64) )
    {
      do
        KeYieldProcessorEx(&v13);
      while( v8->u2._bf_0 < 0 );
    }
  }
  v10 = *v3;
  v14 = v10;
  if( (v10 & 1) == 0 || (v10 & 0x200) != 0 || v7 != ((v10 >> 12) & 0xFFFFFFFFFi64) )
  {
    _InterlockedAnd64(&v8->u2.Lock, 0x7FFFFFFFFFFFFFFFui64);
    if( CurrentIrql != 17 )
      __writecr8(CurrentIrql);
    return 0i64;
  }
  if( !MiAreChargesNeededToLockPage(v8) || MiChargeForLockedPage(v8, 1ui64) )
    ++v8->u3.ReferenceCount;
  if( CurrentIrql != 17 )
    *PageIrql = CurrentIrql;
  MiLockOwnedProtoPage(v8, CurrentIrql);
  return v8;
}

Referenced by: