KiSystemCall32Shadow

VOID __stdcall KiSystemCall32Shadow(INT64 a1, UINT64 a2, UINT64 a3, UINT64 a4){
  unsigned __int64 v4; 
  __int64 v5; 
  unsigned __int64 v6; 
  __int64 v7; 
  _M128A v8; 
  _M128A v9; 
  _M128A v10; 
  _M128A v11; 
  _M128A v12; 
  _M128A v13; 
  _KTRAP_FRAME *__shifted(_KTRAP_FRAME,0x80) TrapFrame; 
  _ETHREAD *CurrentThread; 
  unsigned __int8 BpbKernelSpecCtrl; 
  unsigned __int8 BpbState; 
  ULONG64 v18; 
  _QWORD *Object; 
  bool v20; 
  CHAR v21[344]; 
  __int64 v22; 
  INT64 v23; 
  __int64 v24; 
  __int64 v25; 
  unsigned __int64 UserRspShadow; 
  __int64 v27; 
  void *retaddr; 

  __swapgs();
  __writegsqword(0x9010u, (unsigned __int64)v21);
  __writecr3((unsigned __int64)&retaddr);
  v27 = 43i64;
  UserRspShadow = KeGetPcr()->Prcb.UserRspShadow;
  v25 = v7;
  v24 = 35i64;
  v23 = a1;
  v22 = v5;
  TrapFrame = KeGetTrapFrame();
  ADJ(TrapFrame)->ExceptionActive = 1;
  ADJ(TrapFrame)->_Rax = v4;
  ADJ(TrapFrame)->_Rcx = a1;
  ADJ(TrapFrame)->_Rdx = a2;
  ADJ(TrapFrame)->_R8 = a3;
  ADJ(TrapFrame)->_R9 = a4;
  ADJ(TrapFrame)->_R10 = v6;
  ADJ(TrapFrame)->_R11 = v7;
  if( (ADJ(TrapFrame)->SegCs & 1) != 0 )
  {
    if( (KiKvaShadow & 1) == 0 )
      __swapgs();
    _mm_lfence();
    CurrentThread = (_ETHREAD *)KeGetCurrentThread();
    __writegsqword(0x270u, CurrentThread->Tcb.Process->SecurityDomain);
    __writegsbyte(0x851u, KeGetPcr()->Prcb.BpbRetpolineExitSpecCtrl);
    __writegsbyte(0x852u, KeGetPcr()->Prcb.BpbState);
    BpbKernelSpecCtrl = KeGetPcr()->Prcb.BpbKernelSpecCtrl;
    if( KeGetPcr()->Prcb.BpbCurrentSpecCtrl != BpbKernelSpecCtrl )
    {
      __writegsbyte(0x27Au, BpbKernelSpecCtrl);
      __writemsr(0x48u, BpbKernelSpecCtrl);
    }
    BpbState = KeGetPcr()->Prcb.BpbState;
    if( (BpbState & 8) != 0 )
    {
      __writemsr(0x49u, 1ui64);
      BpbState = KeGetPcr()->Prcb.BpbState;
    }
    if( (BpbState & 2) != 0 )
      __flush_rsb();
    _mm_lfence();
    __writegsbyte(0x853u, 0);
    if( (char)CurrentThread->Tcb.gap0[3] < 0 )
    {
      v18 = __readmsr(0xC0000102);
      if( v18 >= MmUserProbeAddress )
        v18 = MmUserProbeAddress;
      if( CurrentThread->Tcb.Teb != (void *)v18 )
      {
        Object = CurrentThread->Tcb.WaitBlock[3].Object;
        CurrentThread->Tcb._bf_0 |= 0x100u;
        --CurrentThread->Tcb.SpecialApcDisable;
        Object[16] = v18;
      }
    }
    v20 = (CurrentThread->Tcb.gap0[3] & 3) == 0;
    LOWORD(ADJ(TrapFrame)->Dr7) = 0;
    if( !v20 )
      KiSaveDebugRegisterState();
  }
  else
  {
    _mm_lfence();
    if( (KeGetPcr()->Prcb.BpbState & 1) != 0 )
      __writemsr(0x48u, KeGetPcr()->Prcb.BpbCurrentSpecCtrl);
    else
      _mm_lfence();
  }
  ADJ(TrapFrame)->_MxCsr = _mm_getcsr();
  _mm_setcsr(KeGetPcr()->Prcb._MxCsr);
  ADJ(TrapFrame)->_Xmm0 = v8;
  ADJ(TrapFrame)->_Xmm1 = v9;
  ADJ(TrapFrame)->_Xmm2 = v10;
  ADJ(TrapFrame)->_Xmm3 = v11;
  ADJ(TrapFrame)->_Xmm4 = v12;
  ADJ(TrapFrame)->_Xmm5 = v13;
  if( (_BYTE)KeSmapEnabled && (ADJ(TrapFrame)->SegCs & 1) != 0 )
    __stac();
  ADJ(TrapFrame)->_Rip -= 2i64;
  HIDWORD(ADJ(TrapFrame)->_Rip) = 0;
  _enable();
  KiExceptionDispatch(3221225501i64, 0i64, (VOID *)ADJ(TrapFrame)->_Rip, a4, v21[32]);
}

Referenced by: