RtlpHpSegMgrCommitInitiate

NTSTATUS __stdcall RtlpHpSegMgrCommitInitiate(
        INT64 a1,
        INT64 a2,
        INT64 r8_0,
        INT64 a4,
        ULONG_PTR BugCheckParameter2,
        INT64 a6){
  signed __int16 v6; 
  UINT64 v7; 
  int v8; 
  UINT8 v9; 
  int v10; 
  __int16 v12; 
  __int16 v13; 
  unsigned __int16 v14; 
  bool v15; 
  signed __int16 v16; 
  unsigned int v17; 
  int v19; 
  __int16 v20; 
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  unsigned __int8 v23; 
  int v24; 
  __int64 v25; 
  _KLOCK_ENTRY *v26; 
  __int64 v27; 
  INT64 v28; 
  UINT64 a3; 
  __int16 v30; 
  int v31; 

  v31 = a4;
  v28 = a1;
  v6 = *(_WORD *)a2;
  v7 = *(_QWORD *)&BugCheckParameter2;
  v8 = 0;
  v9 = 0;
  v10 = r8_0;
  while( 1 )
  {
    while( 1 )
    {
      v12 = v6;
      v30 = v6;
      if( v10 <= 0 )
        break;
      if( (v6 & 0x4000) == 0 )
      {
        if( (v6 & 0x7FF) != 0 )
        {
LABEL_6:
          v13 = v30;
LABEL_7:
          a1 = v28;
LABEL_8:
          v14 = v10 + v13;
          goto LABEL_9;
        }
        if( (a4 & 3) != 0 )
        {
          if( (a4 & 2) == 0 )
            goto LABEL_6;
          v20 = v6;
        }
        else
        {
          LOBYTE(v19) = RtlpHpSegMgrApplyLargePagePolicy(a1);
          if( !v19 )
            goto LABEL_6;
          v20 = v30;
        }
        v13 = v20 | 0x4000;
        goto LABEL_7;
      }
      _mm_pause();
      v6 = *(_WORD *)a2;
    }
    if( v6 >= 0 )
    {
      v17 = -1073741567;
      goto LABEL_15;
    }
    v13 = v30;
    if( v10 + (v6 & 0x7FF) )
      goto LABEL_8;
    v14 = v30 | 0x4000;
LABEL_9:
    if( (v14 & 0x4000) != 0 )
    {
      v8 = 1;
      v9 = RtlpHpAcquireLockExclusive((_EX_PUSH_LOCK *)v7, *(_DWORD *)(a1 + 40) & 1);
    }
    v16 = _InterlockedCompareExchange16((volatile signed __int16 *)a2, v14, v6);
    v15 = v6 == v16;
    v6 = v16;
    if( v15 )
      break;
    if( v8 )
    {
      if( (*(_DWORD *)(v28 + 40) & 1) != 0 )
      {
        ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)v7);
        __writecr8(v9);
      }
      else
      {
        if( (_InterlockedExchangeAdd64((volatile signed __int64 *)v7, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
          ExfTryToWakePushLock((_EX_PUSH_LOCK *)v7);
        LODWORD(a3) = 0;
        CurrentThread = (_ETHREAD *)KeGetCurrentThread();
        if( MiGetSystemRegionType(v7) == 1 )
          SessionId = MmGetSessionIdEx(CurrentThread->Tcb.ApcState.Process);
        else
          SessionId = -1;
        --CurrentThread->Tcb.SpecialApcDisable;
        v23 = ++CurrentThread->Tcb.AbAllocationRegionCount;
        v24 = ((char)CurrentThread->Tcb.AbEntrySummary | (char)CurrentThread->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
        while( 1 )
        {
          v15 = !_BitScanReverse((unsigned int *)&v25, v24);
          if( v15 )
            break;
          v26 = &CurrentThread->Tcb.LockEntries[v25];
          v24 &= ~(1 << v25);
          if( (v26->AcquiredByte & 1) != 0
            && (v26->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
            && (v26->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (v7 & 0x7FFFFFFFFFFFFFFCi64)
            && v26->LockState.SessionId == SessionId )
          {
            v26->AcquiredByte &= ~1u;
            if( v26->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
            {
              if( v26 )
              {
                v26->CrossThreadReleasableAndBusyByte |= 2u;
                if( v26->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
                  KiAbEntryRemoveFromTree(v26);
                LODWORD(a3) = 0;
                LODWORD(a3) = v26->BoostBitmap.AllFields & 0x1FFFF;
                v26->BoostBitmap.AllFields &= 0xFFFE0000;
                v26->ThreadLocalFlags &= ~1u;
                v26->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
                v27 = v26 - CurrentThread->Tcb.LockEntries;
                if( v23 == 1 )
                  CurrentThread->Tcb.AbEntrySummary |= 1 << v27;
                else
                  _InterlockedOr8((volatile signed __int8 *)&CurrentThread->Tcb.AbOrphanedEntrySummary, 1 << v27);
                goto LABEL_49;
              }
              break;
            }
          }
        }
        if( (*(&CurrentThread->Tcb.MiscFlags + 1) & 0x10000) == 0 )
          KeBugCheckEx(0x162u, CurrentThread, (PVOID)v7, (PVOID)SessionId, 0i64);
LABEL_49:
        --CurrentThread->Tcb.AbAllocationRegionCount;
        KiAbThreadRemoveBoosts(&CurrentThread->Tcb, (VOID *)v7, &a3);
        v15 = CurrentThread->Tcb.SpecialApcDisable++ == -1;
        if( v15
          && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)CurrentThread->Tcb.ApcState.ApcListHead[0].Flink != &CurrentThread->Tcb.152 )
        {
          KiCheckForKernelApcDelivery();
        }
        KiLeaveGuardedRegionUnsafe((__int64)KeGetCurrentThread());
      }
      v8 = 0;
    }
    a1 = v28;
    LOBYTE(a4) = v31;
  }
  if( v10 <= 0 )
  {
    v17 = (v14 >> 13) & 2 | 0xC0000100;
  }
  else if( v12 >= 0 )
  {
    v17 = ((v14 & 0x4000) != 0) - 1073741567;
  }
  else
  {
    v17 = -1073741568;
  }
LABEL_15:
  if( v8 )
    *(_BYTE *)a6 = v9;
  return v17;
}

Referenced by: