HalpInterruptUpdateLocalUnitIdentifier

INT64 __fastcall HalpInterruptUpdateLocalUnitIdentifier(INT64 a1, INT64 a2, INT64 a3, INT64 a4){
  int v4; 
  unsigned int v6; 
  int v8; 
  ULONG_PTR v9; 
  char v11; 
  __int64 v12; 
  __int64 ProcessorIndexFromNumber; 
  __int64 v14; 
  __int64(__fastcall *v15)(_QWORD, int *, INT64, __int64); 
  int v16; 
  unsigned int v17; 
  unsigned int v18; 
  int *v19; 
  _INTERRUPT_PROBLEM v20; 
  unsigned __int64 v21; 
  unsigned __int64 i; 
  __int64 v23; 
  int v24; 
  UINT64 SourceLine; 
  int v26; 
  v26 = a2;
  v4 = a2;
  v6 = 0;
  v8 = a1;
  if( !(_DWORD)HalpInterruptProcessorCount )
  {
LABEL_5:
    LODWORD(SourceLine) = 1009;
    HalpInterruptSetProblemEx(
      0i64,
      InterruptProblemInvalidProcessor,
      0i64,
      "minkernel\\hals\\lib\\interrupts\\common\\replace.c",
      SourceLine);
    return 3221226021i64;
  }
  v9 = HalpInterruptProcessorState;
  while( *(_DWORD *)v9 != (_DWORD)a1 )
  {
    ++v6;
    v9 += 64i64;
    if( v6 >= (unsigned int)HalpInterruptProcessorCount )
      goto LABEL_5;
  }
  v11 = *(_BYTE *)(v9 + 13);
  *(_DWORD *)v9 = v4;
  ProcessorIndexFromNumber = (unsigned int)KeGetProcessorIndexFromNumber((_PROCESSOR_NUMBER *)((v9 + 16) & -(__int64)(v11 != 0)));
  v14 = HalpInterruptTargets + 24 * ProcessorIndexFromNumber;
  *(_OWORD *)a3 = *(_OWORD *)v14;
  *(_QWORD *)(a3 + 16) = *(_QWORD *)(v14 + 16);
  if( *(_DWORD *)v14 == 4 )
  {
    *(_DWORD *)(v14 + 8) = v4;
    v4 = v26;
  }
  v15 = *(__int64(__fastcall **)(_QWORD, int *, INT64, __int64))(HalpInterruptController + 144);
  if( v15 )
  {
    LOBYTE(v12) = 1;
    v16 = v15(*(_QWORD *)(HalpInterruptController + 16), &v26, a4, v12);
    if( v16 < 0 )
    {
      LODWORD(SourceLine) = 1044;
      HalpInterruptSetProblemEx(
        (_REGISTERED_INTERRUPT_CONTROLLER *)HalpInterruptController,
        InterruptProblemConvertIdFailed,
        (unsigned int)v16,
        "minkernel\\hals\\lib\\interrupts\\common\\replace.c",
        SourceLine);
      return v17;
    }
    v14 = HalpInterruptTargets + 24 * ProcessorIndexFromNumber;
    *(_OWORD *)v14 = *(_OWORD *)a4;
    *(_QWORD *)(v14 + 16) = *(_QWORD *)(a4 + 16);
    v4 = v26;
  }
  v18 = 0;
  if( HalpInterruptDynamicProcessorCount )
  {
    v19 = (int *)HalpInterruptDynamicProcessorState;
    while( *v19 != v8 )
    {
      ++v18;
      v19 += 16;
      if( v18 >= HalpInterruptDynamicProcessorCount )
        goto LABEL_18;
    }
    *v19 = v4;
  }
LABEL_18:
  v20 = InterruptProblemIpiDestinationUpdateFailed;
  if( *(_DWORD *)a3 == 6 )
  {
    v21 = HalpInterruptClusterData;
    if( HalpInterruptClusterData >= (unsigned __int64)HalpInterruptClusterDataEnd )
    {
LABEL_22:
      LODWORD(SourceLine) = 1099;
      HalpInterruptSetProblemEx(
        0i64,
        InterruptProblemIpiDestinationUpdateFailed,
        0i64,
        "minkernel\\hals\\lib\\interrupts\\common\\replace.c",
        SourceLine);
    }
    else
    {
      while( *(_DWORD *)v21 != *(_DWORD *)(a3 + 8) )
      {
        v21 += 24i64;
        if( v21 >= HalpInterruptClusterDataEnd )
          goto LABEL_22;
      }
      v23 = *(_QWORD *)(v21 + 8) & ~(1i64 << (KiProcessorIndexToNumberMappingTable[ProcessorIndexFromNumber] & 0x3F));
      *(_QWORD *)(v21 + 8) = v23;
      if( !v23 )
        *(_DWORD *)v21 = -1;
    }
  }
  *(_OWORD *)a4 = *(_OWORD *)v14;
  *(_QWORD *)(a4 + 16) = *(_QWORD *)(v14 + 16);
  if( *(_DWORD *)a4 == 6 )
  {
    for( i = HalpInterruptClusterData; ; i += 24i64 )
    {
      if( i >= HalpInterruptClusterDataEnd )
      {
        LODWORD(SourceLine) = 1134;
        HalpInterruptSetProblemEx(0i64, v20, 0i64, "minkernel\\hals\\lib\\interrupts\\common\\replace.c", SourceLine);
        return 0i64;
      }
      if( *(_DWORD *)i == -1 || *(_DWORD *)i == *(_DWORD *)(a4 + 8) )
        break;
    }
    v24 = KiProcessorIndexToNumberMappingTable[ProcessorIndexFromNumber];
    *(_DWORD *)i = *(_DWORD *)(a4 + 8);
    *(_QWORD *)(i + 8) |= 1i64 << (v24 & 0x3F);
  }
  return 0i64;
}

Referenced by: