text: /* frv vliw model.
     Copyright (C) 1999-2014 Free Software Foundation, Inc.
     Contributed by Red Hat.
  
  This file is part of the GNU simulators.
  
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 3 of the License, or
  (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  
  #define WANT_CPU frvbf
  #define WANT_CPU_FRVBF
  
  #include "sim-main.h"
  
  /* Simulator specific vliw related functions.  Additional vliw related
     code used by both the simulator and the assembler is in frv.opc.  */
  
  int insns_in_slot[UNIT_NUM_UNITS] = {0};
  
  void
  frv_vliw_setup_insn (SIM_CPU *current_cpu, const CGEN_INSN *insn)
  {
    FRV_VLIW *vliw;
    int index;
  
    /* Always clear the NE index which indicates the target register
       of a non excepting insn. This will be reset by the insn if
       necessary.  */
    frv_interrupt_state.ne_index = NE_NOFLAG;
  
    vliw = CPU_VLIW (current_cpu);
    index = vliw->next_slot - 1;
    if (frv_is_float_insn (insn))
      {
        /* If the insn is to be added and is a floating point insn and
  	 it is the first floating point insn in the vliw, then clear
  	 FSR0.FTT.  */
        int i;
        for (i = 0; i < index; ++i)
  	if (frv_is_float_major (vliw->major[i], vliw->mach))
  	  break; /* found float insn.  */
        if (i >= index)
  	{
  	  SI fsr0 = GET_FSR (0);
  	  SET_FSR_FTT (fsr0, FTT_NONE);
  	  SET_FSR (0, fsr0);
  	}
      }
    else if (frv_is_media_insn (insn))
      {
        /* Clear the appropriate MSR fields depending on which slot
  	 this insn is in.  */
        CGEN_ATTR_VALUE_ENUM_TYPE preserve_ovf;
        SI msr0 = GET_MSR (0);
  
        preserve_ovf = CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_PRESERVE_OVF);
        if ((*vliw->current_vliw)[index] == UNIT_FM0)
  	{
  	  if (! preserve_ovf)
  	    {
  	      /* Clear MSR0.OVF and MSR0.SIE.  */
  	      CLEAR_MSR_SIE (msr0);
  	      CLEAR_MSR_OVF (msr0);
  	    }
  	}
        else
  	{
  	  if (! preserve_ovf)
  	    {
  	      /* Clear MSR1.OVF and MSR1.SIE.  */
  	      SI msr1 = GET_MSR (1);
  	      CLEAR_MSR_SIE (msr1);
  	      CLEAR_MSR_OVF (msr1);
  	      SET_MSR (1, msr1);
  	    }
  	}
        SET_MSR (0, msr0);
      } /* Insn is a media insns.  */
    COUNT_INSNS_IN_SLOT ((*vliw->current_vliw)[index]);
  }
  
  