MiMirrorPerformBlackWrites

NTSTATUS __fastcall MiMirrorPerformBlackWrites(INT64 a1){
  NTSTATUS v1; 
  unsigned __int64 v2; 
  unsigned __int64 v4; 
  unsigned __int64 v5; 
  _QWORD *v6; 
  __int64 i; 
  unsigned __int64 v8; 
  unsigned __int64 v9; 
  unsigned __int64 v10; 
  unsigned __int64 v11; 
  _DWORD *v12; 
  unsigned __int64 v13; 
  unsigned __int64 v14; 
  unsigned __int64 j; 
  unsigned __int64 v16; 
  _DWORD *v18; 
  unsigned __int64 v19; 

  v1 = 0;
  v2 = 0i64;
  while( 1 )
  {
    v4 = v2 & -(__int64)(v2 < *(&stru_140C4DB30 + 294));
    v5 = *(&stru_140C4DB30 + 294) - 1i64;
    while( 1 )
    {
      if( v5 - v4 == -1i64 )
        goto LABEL_39;
      v6 = (_QWORD *)(*(&stru_140C4DB30 + 295) + 8 * (v4 >> 6));
      for( i = ~*v6 | ((1i64 << (v4 & 0x3F)) - 1); i == -1; i = ~*v6 )
      {
        if( (unsigned __int64)++v6 > *(&stru_140C4DB30 + 295) + 8 * (v5 >> 6) )
          goto LABEL_39;
      }
      _BitScanForward64(&v8, ~i);
      v9 = v8 + (((__int64)v6 - *(&stru_140C4DB30 + 295)) >> 3 << 6);
      if( v9 > v5 )
      {
LABEL_39:
        v9 = -1i64;
      }
      else if( v9 != -1i64 )
      {
        break;
      }
      if( !v4 )
        break;
      v19 = v2 + 1;
      if( v2 + 1 > *(&stru_140C4DB30 + 294) )
        v19 = *(&stru_140C4DB30 + 294);
      v5 = v19 - 1;
      v4 = 0i64;
    }
    if( v9 < v2 || v9 == -1i64 )
      return v1;
    if( *(&stru_140C4DB30 + 294) > v9 )
    {
      v10 = v9;
      v11 = *(&stru_140C4DB30 + 295) + 4 * ((unsigned __int64)(*(&stru_140C4DB30 + 294) - 1i64) >> 5);
      v12 = (_DWORD *)(*(&stru_140C4DB30 + 295) + 4 * (v9 >> 5));
      if( v12 != (_DWORD *)v11 && (*v12 | *((_DWORD *)qword_140011CE0 + (v9 & 0x1F))) == -1 )
      {
        v10 = (v9 & 0xFFFFFFFFFFFFFFE0ui64) + 32;
        for( ++v12; (unsigned __int64)v12 < v11 && *v12 == -1; ++v12 )
          v10 += 32i64;
      }
      while( v10 < *(&stru_140C4DB30 + 294) && _bittest64(*(&stru_140C4DB30 + 295), v10) )
        ++v10;
      v13 = 0i64;
      if( v12 == (_DWORD *)v11 )
        goto LABEL_20;
      v14 = v10 & 0x1F;
      if( (~*((_DWORD *)qword_140011CE0 + v14) & *v12) != 0 )
        goto LABEL_20;
      v13 = 32 - v14;
      if( v14 != 33 )
      {
        v18 = v12 + 1;
        while( (unsigned __int64)v18 < v11 && !*v18 )
        {
          ++v18;
          v13 += 32i64;
          if( v13 == -1i64 )
            goto LABEL_25;
        }
LABEL_20:
        for( j = v13 + v10; j < *(&stru_140C4DB30 + 294) && !_bittest64(*(&stru_140C4DB30 + 295), j) && v13 != -1i64; ++j )
          ++v13;
      }
LABEL_25:
      if( v13 )
        goto LABEL_26;
      goto LABEL_41;
    }
    v13 = 0i64;
LABEL_41:
    v10 = *(&stru_140C4DB30 + 294);
LABEL_26:
    v16 = v10 - v9;
    v1 = (*(__int64(__fastcall **)(unsigned __int64, unsigned __int64))(a1 + 16))(v9 << 12, v16 << 12);
    if( v1 >= 0 )
    {
      v2 = v16 + v13 + v9;
      if( v2 < *(&stru_140C4DB30 + 294) )
        continue;
    }
    return v1;
  }
}

Referenced by: