xref: /src/external/gpl3/gdb/dist/sim/frv/profile-fr500.c

/* frv simulator fr500 dependent profiling code.

   Copyright (C) 1998-2019 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
#define WANT_CPU_FRVBF

#include "sim-main.h"
#include "bfd.h"

#if WITH_PROFILE_MODEL_P

#include "profile.h"
#include "profile-fr500.h"

/* Initialize cycle counting for an insn.
   FIRST_P is non-zero if this is the first insn in a set of parallel
   insns.  */
void
fr500_model_insn_before (SIM_CPU *cpu, int first_p)
{
  if (first_p)
    {
      MODEL_FR500_DATA *d = CPU_MODEL_DATA (cpu);
      FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu);
      ps->cur_gr_complex = ps->prev_gr_complex;
      d->cur_fpop     = d->prev_fpop;
      d->cur_media    = d->prev_media;
      d->cur_cc_complex = d->prev_cc_complex;
    }
}

/* Record the cycles computed for an insn.
   LAST_P is non-zero if this is the last insn in a set of parallel insns,
   and we update the total cycle count.
   CYCLES is the cycle count of the insn.  */
void
fr500_model_insn_after (SIM_CPU *cpu, int last_p, int cycles)
{
  if (last_p)
    {
      MODEL_FR500_DATA *d = CPU_MODEL_DATA (cpu);
      FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu);
      ps->prev_gr_complex = ps->cur_gr_complex;
      d->prev_fpop     = d->cur_fpop;
      d->prev_media    = d->cur_media;
      d->prev_cc_complex = d->cur_cc_complex;
    }
}

static void
set_use_is_fpop (SIM_CPU *cpu, INT fr)
{
  MODEL_FR500_DATA *d = CPU_MODEL_DATA (cpu);
  fr500_reset_fr_flags (cpu, (fr));
  d->cur_fpop |=  (((DI)1) << (fr));
}

static void
set_use_not_fpop (SIM_CPU *cpu, INT fr)
{
  MODEL_FR500_DATA *d = CPU_MODEL_DATA (cpu);
  d->cur_fpop &= ~(((DI)1) << (fr));
}

static int
use_is_fpop (SIM_CPU *cpu, INT fr)
{
  MODEL_FR500_DATA *d = CPU_MODEL_DATA (cpu);
  return d->prev_fpop & (((DI)1) << (fr));
}

static void
set_use_is_media ( SIM_CPU *cpu, INT fr)
{
  MODEL_FR500_DATA *d = CPU_MODEL_DATA (cpu);
  fr500_reset_fr_flags (cpu, (fr));
  d->cur_media |=  (((DI)1) << (fr));
}

static void
set_use_not_media (SIM_CPU *cpu, INT fr)
{
  MODEL_FR500_DATA *d = CPU_MODEL_DATA (cpu);
  d->cur_media &= ~(((DI)1) << (fr));
}

static int
use_is_media (SIM_CPU *cpu, INT fr)
{
  MODEL_FR500_DATA *d = CPU_MODEL_DATA (cpu);
  return d->prev_media & (((DI)1) << (fr));
}

static void
set_use_is_cc_complex (SIM_CPU *cpu, INT cc)
{
  MODEL_FR500_DATA *d = CPU_MODEL_DATA (cpu);
  fr500_reset_cc_flags (cpu, cc);
  d->cur_cc_complex |= (((DI)1) << (cc));
}

static void
set_use_not_cc_complex (SIM_CPU *cpu, INT cc)
{
  MODEL_FR500_DATA *d = CPU_MODEL_DATA (cpu);
  d->cur_cc_complex &= ~(((DI)1) << (cc));
}

static int
use_is_cc_complex (SIM_CPU *cpu, INT cc)
{
  MODEL_FR500_DATA *d = CPU_MODEL_DATA (cpu);
  return d->prev_cc_complex &   (((DI)1) << (cc));
}

void
fr500_reset_fr_flags (SIM_CPU *cpu, INT fr)
{
  set_use_not_fpop (cpu, fr);
  set_use_not_media (cpu, fr);
}

void
fr500_reset_cc_flags (SIM_CPU *cpu, INT cc)
{
  set_use_not_cc_complex (cpu, cc);
}

/* Latency of floating point registers may be less than recorded when followed
   by another floating point insn.  */
static void
adjust_float_register_busy (SIM_CPU *cpu, INT in_FRi, INT in_FRj, INT out_FRk,
			    int cycles)
{
  /* If the registers were previously used in a floating point op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  if (in_FRi >= 0)
    if (use_is_fpop (cpu, in_FRi))
      decrease_FR_busy (cpu, in_FRi, cycles);
    else
      enforce_full_fr_latency (cpu, in_FRi);

  if (in_FRj >= 0 && in_FRj != in_FRi)
    if (use_is_fpop (cpu, in_FRj))
      decrease_FR_busy (cpu, in_FRj, cycles);
    else
      enforce_full_fr_latency (cpu, in_FRj);

  if (out_FRk >= 0 && out_FRk != in_FRi && out_FRk != in_FRj)
    if (use_is_fpop (cpu, out_FRk))
      decrease_FR_busy (cpu, out_FRk, cycles);
    else
      enforce_full_fr_latency (cpu, out_FRk);
}

/* Latency of floating point registers may be less than recorded when followed
   by another floating point insn.  */
static void
adjust_double_register_busy (SIM_CPU *cpu, INT in_FRi, INT in_FRj, INT out_FRk,
			    int cycles)
{
  /* If the registers were previously used in a floating point op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  adjust_float_register_busy (cpu, in_FRi, in_FRj, out_FRk, cycles);
  if (in_FRi >= 0)  ++in_FRi;
  if (in_FRj >= 0)  ++in_FRj;
  if (out_FRk >= 0) ++out_FRk;
  adjust_float_register_busy (cpu, in_FRi, in_FRj, out_FRk, cycles);
}

/* Latency of floating point registers is less than recorded when followed
   by another floating point insn.  */
static void
restore_float_register_busy (SIM_CPU *cpu, INT in_FRi, INT in_FRj, INT out_FRk,
			     int cycles)
{
  /* If the registers were previously used in a floating point op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  if (in_FRi >= 0 && use_is_fpop (cpu, in_FRi))
    increase_FR_busy (cpu, in_FRi, cycles);
  if (in_FRj != in_FRi && use_is_fpop (cpu, in_FRj))
    increase_FR_busy (cpu, in_FRj, cycles);
  if (out_FRk != in_FRi && out_FRk != in_FRj && use_is_fpop (cpu, out_FRk))
    increase_FR_busy (cpu, out_FRk, cycles);
}

/* Latency of floating point registers is less than recorded when followed
   by another floating point insn.  */
static void
restore_double_register_busy (SIM_CPU *cpu, INT in_FRi, INT in_FRj, INT out_FRk,
			    int cycles)
{
  /* If the registers were previously used in a floating point op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  restore_float_register_busy (cpu, in_FRi, in_FRj, out_FRk, cycles);
  if (in_FRi >= 0)  ++in_FRi;
  if (in_FRj >= 0)  ++in_FRj;
  if (out_FRk >= 0) ++out_FRk;
  restore_float_register_busy (cpu, in_FRi, in_FRj, out_FRk, cycles);
}

int
frvbf_model_fr500_u_exec (SIM_CPU *cpu, const IDESC *idesc,
			  int unit_num, int referenced)
{
  return idesc->timing->units[unit_num].done;
}

int
frvbf_model_fr500_u_integer (SIM_CPU *cpu, const IDESC *idesc,
			     int unit_num, int referenced,
			     INT in_GRi, INT in_GRj, INT out_GRk,
			     INT out_ICCi_1)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* icc0-icc4 are the upper 4 fields of the CCR.  */
      if (out_ICCi_1 >= 0)
	out_ICCi_1 += 4;

      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi != out_GRk && in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != out_GRk && in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_GR (cpu, out_GRk);
      vliw_wait_for_CCR (cpu, out_ICCi_1);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      load_wait_for_GR (cpu, out_GRk);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  /* GRk is available immediately to the next VLIW insn as is ICCi_1.  */
  cycles = idesc->timing->units[unit_num].done;
  return cycles;
}

int
frvbf_model_fr500_u_imul (SIM_CPU *cpu, const IDESC *idesc,
			  int unit_num, int referenced,
			  INT in_GRi, INT in_GRj, INT out_GRk, INT out_ICCi_1)
{
  int cycles;
  /* icc0-icc4 are the upper 4 fields of the CCR.  */
  if (out_ICCi_1 >= 0)
    out_ICCi_1 += 4;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi != out_GRk && in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != out_GRk && in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_GRdouble (cpu, out_GRk);
      vliw_wait_for_CCR (cpu, out_ICCi_1);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      load_wait_for_GRdouble (cpu, out_GRk);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  /* GRk has a latency of 2 cycles.  */
  cycles = idesc->timing->units[unit_num].done;
  update_GRdouble_latency (cpu, out_GRk, cycles + 2);
  set_use_is_gr_complex (cpu, out_GRk);
  set_use_is_gr_complex (cpu, out_GRk + 1);

  /* ICCi_1 has a latency of 1 cycle.  */
  update_CCR_latency (cpu, out_ICCi_1, cycles + 1);

  return cycles;
}

int
frvbf_model_fr500_u_idiv (SIM_CPU *cpu, const IDESC *idesc,
			  int unit_num, int referenced,
			  INT in_GRi, INT in_GRj, INT out_GRk, INT out_ICCi_1)
{
  int cycles;
  FRV_VLIW *vliw;
  int slot;

  /* icc0-icc4 are the upper 4 fields of the CCR.  */
  if (out_ICCi_1 >= 0)
    out_ICCi_1 += 4;

  vliw = CPU_VLIW (cpu);
  slot = vliw->next_slot - 1;
  slot = (*vliw->current_vliw)[slot] - UNIT_I0;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi != out_GRk && in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != out_GRk && in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_GR (cpu, out_GRk);
      vliw_wait_for_CCR (cpu, out_ICCi_1);
      vliw_wait_for_idiv_resource (cpu, slot);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      load_wait_for_GR (cpu, out_GRk);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  /* GRk has a latency of 19 cycles!  */
  cycles = idesc->timing->units[unit_num].done;
  update_GR_latency (cpu, out_GRk, cycles + 19);
  set_use_is_gr_complex (cpu, out_GRk);

  /* ICCi_1 has a latency of 19 cycles.  */
  update_CCR_latency (cpu, out_ICCi_1, cycles + 19);
  set_use_is_cc_complex (cpu, out_ICCi_1);

  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      /* GNER has a latency of 18 cycles.  */
      update_SPR_latency (cpu, GNER_FOR_GR (out_GRk), cycles + 18);
    }

  /* the idiv resource has a latency of 18 cycles!  */
  update_idiv_resource_latency (cpu, slot, cycles + 18);

  return cycles;
}

int
frvbf_model_fr500_u_branch (SIM_CPU *cpu, const IDESC *idesc,
			    int unit_num, int referenced,
			    INT in_GRi, INT in_GRj,
			    INT in_ICCi_2, INT in_FCCi_2)
{
  int cycles;
  FRV_PROFILE_STATE *ps;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* icc0-icc4 are the upper 4 fields of the CCR.  */
      if (in_ICCi_2 >= 0)
	in_ICCi_2 += 4;

      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_CCR (cpu, in_ICCi_2);
      vliw_wait_for_CCR (cpu, in_FCCi_2);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  /* When counting branches taken or not taken, don't consider branches after
     the first taken branch in a vliw insn.  */
  ps = CPU_PROFILE_STATE (cpu);
  if (! ps->vliw_branch_taken)
    {
      /* (1 << 4): The pc is the 5th element in inputs, outputs.
	 ??? can be cleaned up */
      PROFILE_DATA *p = CPU_PROFILE_DATA (cpu);
      int taken = (referenced & (1 << 4)) != 0;
      if (taken)
	{
	  ++PROFILE_MODEL_TAKEN_COUNT (p);
	  ps->vliw_branch_taken = 1;
	}
      else
	++PROFILE_MODEL_UNTAKEN_COUNT (p);
    }

  cycles = idesc->timing->units[unit_num].done;
  return cycles;
}

int
frvbf_model_fr500_u_trap (SIM_CPU *cpu, const IDESC *idesc,
			  int unit_num, int referenced,
			  INT in_GRi, INT in_GRj,
			  INT in_ICCi_2, INT in_FCCi_2)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* icc0-icc4 are the upper 4 fields of the CCR.  */
      if (in_ICCi_2 >= 0)
	in_ICCi_2 += 4;

      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_CCR (cpu, in_ICCi_2);
      vliw_wait_for_CCR (cpu, in_FCCi_2);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  return cycles;
}

int
frvbf_model_fr500_u_check (SIM_CPU *cpu, const IDESC *idesc,
			   int unit_num, int referenced,
			   INT in_ICCi_3, INT in_FCCi_3)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* icc0-icc4 are the upper 4 fields of the CCR.  */
      if (in_ICCi_3 >= 0)
	in_ICCi_3 += 4;

      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.  */
      vliw_wait_for_CCR (cpu, in_ICCi_3);
      vliw_wait_for_CCR (cpu, in_FCCi_3);
      handle_resource_wait (cpu);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  return cycles;
}

int
frvbf_model_fr500_u_clrgr (SIM_CPU *cpu, const IDESC *idesc,
			   int unit_num, int referenced,
			   INT in_GRk)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* Wait for both GNER registers or just the one specified.  */
      if (in_GRk == -1)
	{
	  vliw_wait_for_SPR (cpu, H_SPR_GNER0);
	  vliw_wait_for_SPR (cpu, H_SPR_GNER1);
	}
      else
	vliw_wait_for_SPR (cpu, GNER_FOR_GR (in_GRk));
      handle_resource_wait (cpu);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  return cycles;
}

int
frvbf_model_fr500_u_clrfr (SIM_CPU *cpu, const IDESC *idesc,
			   int unit_num, int referenced,
			   INT in_FRk)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* Wait for both GNER registers or just the one specified.  */
      if (in_FRk == -1)
	{
	  vliw_wait_for_SPR (cpu, H_SPR_FNER0);
	  vliw_wait_for_SPR (cpu, H_SPR_FNER1);
	}
      else
	vliw_wait_for_SPR (cpu, FNER_FOR_FR (in_FRk));
      handle_resource_wait (cpu);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  return cycles;
}

int
frvbf_model_fr500_u_commit (SIM_CPU *cpu, const IDESC *idesc,
			    int unit_num, int referenced,
			    INT in_GRk, INT in_FRk)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* If GR is specified, then FR is not and vice-versa. If neither is
	 then it's a commitga or commitfa. Check the insn attribute to
	 figure out which.  */
      if (in_GRk != -1)
	vliw_wait_for_SPR (cpu, GNER_FOR_GR (in_GRk));
      else if (in_FRk != -1)
	vliw_wait_for_SPR (cpu, FNER_FOR_FR (in_FRk));
      else if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_FR_ACCESS))
	{
	  vliw_wait_for_SPR (cpu, H_SPR_FNER0);
	  vliw_wait_for_SPR (cpu, H_SPR_FNER1);
	}
      else
	{
	  vliw_wait_for_SPR (cpu, H_SPR_GNER0);
	  vliw_wait_for_SPR (cpu, H_SPR_GNER1);
	}
      handle_resource_wait (cpu);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  return cycles;
}

int
frvbf_model_fr500_u_set_hilo (SIM_CPU *cpu, const IDESC *idesc,
			     int unit_num, int referenced,
			     INT out_GRkhi, INT out_GRklo)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a GR
	 which is not ready yet.  */
      vliw_wait_for_GR (cpu, out_GRkhi);
      vliw_wait_for_GR (cpu, out_GRklo);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, out_GRkhi);
      load_wait_for_GR (cpu, out_GRklo);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  /* GRk is available immediately to the next VLIW insn.  */
  cycles = idesc->timing->units[unit_num].done;

  set_use_not_gr_complex (cpu, out_GRkhi);
  set_use_not_gr_complex (cpu, out_GRklo);

  return cycles;
}

int
frvbf_model_fr500_u_gr_load (SIM_CPU *cpu, const IDESC *idesc,
			     int unit_num, int referenced,
			     INT in_GRi, INT in_GRj,
			     INT out_GRk, INT out_GRdoublek)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi != out_GRk && in_GRi != out_GRdoublek
	  && in_GRi != out_GRdoublek + 1 && in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj != out_GRk && in_GRj != out_GRdoublek
	  && in_GRj != out_GRdoublek + 1 && in_GRj >= 0)

	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_GR (cpu, out_GRk);
      vliw_wait_for_GRdouble (cpu, out_GRdoublek);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      load_wait_for_GR (cpu, out_GRk);
      load_wait_for_GRdouble (cpu, out_GRdoublek);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;

  /* The latency of GRk for a load will depend on how long it takes to retrieve
     the the data from the cache or memory.  */
  update_GR_latency_for_load (cpu, out_GRk, cycles);
  update_GRdouble_latency_for_load (cpu, out_GRdoublek, cycles);

  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      /* GNER has a latency of 2 cycles.  */
      update_SPR_latency (cpu, GNER_FOR_GR (out_GRk), cycles + 2);
      update_SPR_latency (cpu, GNER_FOR_GR (out_GRdoublek), cycles + 2);
    }

  if (out_GRk >= 0)
    set_use_is_gr_complex (cpu, out_GRk);
  if (out_GRdoublek != -1)
    {
      set_use_is_gr_complex (cpu, out_GRdoublek);
      set_use_is_gr_complex (cpu, out_GRdoublek + 1);
    }

  return cycles;
}

int
frvbf_model_fr500_u_gr_store (SIM_CPU *cpu, const IDESC *idesc,
			      int unit_num, int referenced,
			      INT in_GRi, INT in_GRj,
			      INT in_GRk, INT in_GRdoublek)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      if (in_GRk != in_GRi && in_GRk != in_GRj && in_GRk >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRk))
	    decrease_GR_busy (cpu, in_GRk, 1);
	}
      if (in_GRdoublek != in_GRi && in_GRdoublek != in_GRj
          && in_GRdoublek + 1 != in_GRi && in_GRdoublek + 1 != in_GRj
	  && in_GRdoublek >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRdoublek))
	    decrease_GR_busy (cpu, in_GRdoublek, 1);
	  if (use_is_gr_complex (cpu, in_GRdoublek + 1))
	    decrease_GR_busy (cpu, in_GRdoublek + 1, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_GR (cpu, in_GRk);
      vliw_wait_for_GRdouble (cpu, in_GRdoublek);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      load_wait_for_GR (cpu, in_GRk);
      load_wait_for_GRdouble (cpu, in_GRdoublek);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;

  return cycles;
}

int
frvbf_model_fr500_u_gr_r_store (SIM_CPU *cpu, const IDESC *idesc,
				int unit_num, int referenced,
				INT in_GRi, INT in_GRj,
				INT in_GRk, INT in_GRdoublek)
{
  int cycles = frvbf_model_fr500_u_gr_store (cpu, idesc, unit_num, referenced,
					     in_GRi, in_GRj, in_GRk,
					     in_GRdoublek);

  if (model_insn == FRV_INSN_MODEL_PASS_2)
    {
      if (CPU_RSTR_INVALIDATE(cpu))
	request_cache_invalidate (cpu, CPU_DATA_CACHE (cpu), cycles);
    }

  return cycles;
}

int
frvbf_model_fr500_u_fr_load (SIM_CPU *cpu, const IDESC *idesc,
			     int unit_num, int referenced,
			     INT in_GRi, INT in_GRj,
			     INT out_FRk, INT out_FRdoublek)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      if (out_FRk >= 0)
	{
	  if (use_is_media (cpu, out_FRk))
	    decrease_FR_busy (cpu, out_FRk, 1);
	  else
	    adjust_float_register_busy (cpu, -1, -1, out_FRk, 1);
	}
      if (out_FRdoublek >= 0)
	{
	  if (use_is_media (cpu, out_FRdoublek))
	    decrease_FR_busy (cpu, out_FRdoublek, 1);
	  else
	    adjust_float_register_busy (cpu, -1, -1, out_FRdoublek, 1);
	  if (use_is_media (cpu, out_FRdoublek + 1))
	    decrease_FR_busy (cpu, out_FRdoublek + 1, 1);
	  else
	    adjust_float_register_busy (cpu, -1, -1, out_FRdoublek + 1, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_FR (cpu, out_FRk);
      vliw_wait_for_FRdouble (cpu, out_FRdoublek);
      if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
	{
	  vliw_wait_for_SPR (cpu, FNER_FOR_FR (out_FRk));
	  vliw_wait_for_SPR (cpu, FNER_FOR_FR (out_FRdoublek));
	}
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      load_wait_for_FR (cpu, out_FRk);
      load_wait_for_FRdouble (cpu, out_FRdoublek);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;

  /* The latency of FRk for a load will depend on how long it takes to retrieve
     the the data from the cache or memory.  */
  update_FR_latency_for_load (cpu, out_FRk, cycles);
  update_FRdouble_latency_for_load (cpu, out_FRdoublek, cycles);

  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      /* FNER has a latency of 3 cycles.  */
      update_SPR_latency (cpu, FNER_FOR_FR (out_FRk), cycles + 3);
      update_SPR_latency (cpu, FNER_FOR_FR (out_FRdoublek), cycles + 3);
    }

  fr500_reset_fr_flags (cpu, out_FRk);

  return cycles;
}

int
frvbf_model_fr500_u_fr_store (SIM_CPU *cpu, const IDESC *idesc,
			      int unit_num, int referenced,
			      INT in_GRi, INT in_GRj,
			      INT in_FRk, INT in_FRdoublek)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      if (in_FRk >= 0)
	{
	  if (use_is_media (cpu, in_FRk))
	    decrease_FR_busy (cpu, in_FRk, 1);
	  else
	    adjust_float_register_busy (cpu, -1, -1, in_FRk, 1);
	}
      if (in_FRdoublek >= 0)
	{
	  if (use_is_media (cpu, in_FRdoublek))
	    decrease_FR_busy (cpu, in_FRdoublek, 1);
	  else
	    adjust_float_register_busy (cpu, -1, -1, in_FRdoublek, 1);
	  if (use_is_media (cpu, in_FRdoublek + 1))
	    decrease_FR_busy (cpu, in_FRdoublek + 1, 1);
	  else
	    adjust_float_register_busy (cpu, -1, -1, in_FRdoublek + 1, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_FR (cpu, in_FRk);
      vliw_wait_for_FRdouble (cpu, in_FRdoublek);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      load_wait_for_FR (cpu, in_FRk);
      load_wait_for_FRdouble (cpu, in_FRdoublek);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;

  return cycles;
}

int
frvbf_model_fr500_u_fr_r_store (SIM_CPU *cpu, const IDESC *idesc,
				int unit_num, int referenced,
				INT in_GRi, INT in_GRj,
				INT in_FRk, INT in_FRdoublek)
{
  int cycles = frvbf_model_fr500_u_fr_store (cpu, idesc, unit_num, referenced,
					     in_GRi, in_GRj, in_FRk,
					     in_FRdoublek);

  if (model_insn == FRV_INSN_MODEL_PASS_2)
    {
      if (CPU_RSTR_INVALIDATE(cpu))
	request_cache_invalidate (cpu, CPU_DATA_CACHE (cpu), cycles);
    }

  return cycles;
}

int
frvbf_model_fr500_u_swap (SIM_CPU *cpu, const IDESC *idesc,
			  int unit_num, int referenced,
			  INT in_GRi, INT in_GRj, INT out_GRk)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi != out_GRk && in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != out_GRk && in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_GR (cpu, out_GRk);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      load_wait_for_GR (cpu, out_GRk);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;

  /* The latency of GRk will depend on how long it takes to swap
     the the data from the cache or memory.  */
  update_GR_latency_for_swap (cpu, out_GRk, cycles);
  set_use_is_gr_complex (cpu, out_GRk);

  return cycles;
}

int
frvbf_model_fr500_u_fr2fr (SIM_CPU *cpu, const IDESC *idesc,
			   int unit_num, int referenced,
			   INT in_FRj, INT out_FRk)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.  */
      if (in_FRj >= 0)
	{
	  if (use_is_media (cpu, in_FRj))
	    decrease_FR_busy (cpu, in_FRj, 1);
	  else
	    adjust_float_register_busy (cpu, -1, in_FRj, -1, 1);
	}
      if (out_FRk >= 0 && out_FRk != in_FRj)
	{
	  if (use_is_media (cpu, out_FRk))
	    decrease_FR_busy (cpu, out_FRk, 1);
	  else
	    adjust_float_register_busy (cpu, -1, -1, out_FRk, 1);
	}
      vliw_wait_for_FR (cpu, in_FRj);
      vliw_wait_for_FR (cpu, out_FRk);
      handle_resource_wait (cpu);
      load_wait_for_FR (cpu, in_FRj);
      load_wait_for_FR (cpu, out_FRk);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  /* The latency of FRj is 3 cycles.  */
  cycles = idesc->timing->units[unit_num].done;
  update_FR_latency (cpu, out_FRk, cycles + 3);

  return cycles;
}

int
frvbf_model_fr500_u_fr2gr (SIM_CPU *cpu, const IDESC *idesc,
			   int unit_num, int referenced,
			   INT in_FRk, INT out_GRj)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.  */
      if (in_FRk >= 0)
	{
	  if (use_is_media (cpu, in_FRk))
	    decrease_FR_busy (cpu, in_FRk, 1);
	  else
	    adjust_float_register_busy (cpu, -1, in_FRk, -1, 1);
	}
      vliw_wait_for_FR (cpu, in_FRk);
      vliw_wait_for_GR (cpu, out_GRj);
      handle_resource_wait (cpu);
      load_wait_for_FR (cpu, in_FRk);
      load_wait_for_GR (cpu, out_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  /* The latency of GRj is 2 cycles.  */
  cycles = idesc->timing->units[unit_num].done;
  update_GR_latency (cpu, out_GRj, cycles + 2);
  set_use_is_gr_complex (cpu, out_GRj);

  return cycles;
}

int
frvbf_model_fr500_u_spr2gr (SIM_CPU *cpu, const IDESC *idesc,
			   int unit_num, int referenced,
			   INT in_spr, INT out_GRj)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.  */
      vliw_wait_for_SPR (cpu, in_spr);
      vliw_wait_for_GR (cpu, out_GRj);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, out_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;

#if 0 /* no latency?  */
  /* The latency of GRj is 2 cycles.  */
  update_GR_latency (cpu, out_GRj, cycles + 2);
#endif

  return cycles;
}

int
frvbf_model_fr500_u_gr2fr (SIM_CPU *cpu, const IDESC *idesc,
			   int unit_num, int referenced,
			   INT in_GRj, INT out_FRk)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      if (out_FRk >= 0)
	{
	  if (use_is_media (cpu, out_FRk))
	    decrease_FR_busy (cpu, out_FRk, 1);
	  else
	    adjust_float_register_busy (cpu, -1, -1, out_FRk, 1);
	}
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_FR (cpu, out_FRk);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRj);
      load_wait_for_FR (cpu, out_FRk);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  /* The latency of FRk is 2 cycles.  */
  cycles = idesc->timing->units[unit_num].done;
  update_FR_latency (cpu, out_FRk, cycles + 2);

  /* Mark this use of the register as NOT a floating point op.  */
  fr500_reset_fr_flags (cpu, out_FRk);

  return cycles;
}

int
frvbf_model_fr500_u_gr2spr (SIM_CPU *cpu, const IDESC *idesc,
			    int unit_num, int referenced,
			    INT in_GRj, INT out_spr)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRj);
      vliw_wait_for_SPR (cpu, out_spr);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;

#if 0
  /* The latency of spr is ? cycles.  */
  update_SPR_latency (cpu, out_spr, cycles + ?);
#endif

  return cycles;
}

int
frvbf_model_fr500_u_ici (SIM_CPU *cpu, const IDESC *idesc,
			 int unit_num, int referenced,
			 INT in_GRi, INT in_GRj)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  request_cache_invalidate (cpu, CPU_INSN_CACHE (cpu), cycles);
  return cycles;
}

int
frvbf_model_fr500_u_dci (SIM_CPU *cpu, const IDESC *idesc,
			 int unit_num, int referenced,
			 INT in_GRi, INT in_GRj)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  request_cache_invalidate (cpu, CPU_DATA_CACHE (cpu), cycles);
  return cycles;
}

int
frvbf_model_fr500_u_dcf (SIM_CPU *cpu, const IDESC *idesc,
			 int unit_num, int referenced,
			 INT in_GRi, INT in_GRj)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  request_cache_flush (cpu, CPU_DATA_CACHE (cpu), cycles);
  return cycles;
}

int
frvbf_model_fr500_u_icpl (SIM_CPU *cpu, const IDESC *idesc,
			  int unit_num, int referenced,
			  INT in_GRi, INT in_GRj)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  request_cache_preload (cpu, CPU_INSN_CACHE (cpu), cycles);
  return cycles;
}

int
frvbf_model_fr500_u_dcpl (SIM_CPU *cpu, const IDESC *idesc,
			  int unit_num, int referenced,
			  INT in_GRi, INT in_GRj)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  request_cache_preload (cpu, CPU_DATA_CACHE (cpu), cycles);
  return cycles;
}

int
frvbf_model_fr500_u_icul (SIM_CPU *cpu, const IDESC *idesc,
			  int unit_num, int referenced,
			  INT in_GRi, INT in_GRj)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  request_cache_unlock (cpu, CPU_INSN_CACHE (cpu), cycles);
  return cycles;
}

int
frvbf_model_fr500_u_dcul (SIM_CPU *cpu, const IDESC *idesc,
			  int unit_num, int referenced,
			  INT in_GRi, INT in_GRj)
{
  int cycles;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      /* The entire VLIW insn must wait if there is a dependency on a register
	 which is not ready yet.
	 The latency of the registers may be less than previously recorded,
	 depending on how they were used previously.
	 See Table 13-8 in the LSI.  */
      if (in_GRi >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRi))
	    decrease_GR_busy (cpu, in_GRi, 1);
	}
      if (in_GRj != in_GRi && in_GRj >= 0)
	{
	  if (use_is_gr_complex (cpu, in_GRj))
	    decrease_GR_busy (cpu, in_GRj, 1);
	}
      vliw_wait_for_GR (cpu, in_GRi);
      vliw_wait_for_GR (cpu, in_GRj);
      handle_resource_wait (cpu);
      load_wait_for_GR (cpu, in_GRi);
      load_wait_for_GR (cpu, in_GRj);
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  request_cache_unlock (cpu, CPU_DATA_CACHE (cpu), cycles);
  return cycles;
}

int
frvbf_model_fr500_u_float_arith (SIM_CPU *cpu, const IDESC *idesc,
				 int unit_num, int referenced,
				 INT in_FRi, INT in_FRj,
				 INT in_FRdoublei, INT in_FRdoublej,
				 INT out_FRk, INT out_FRdoublek)
{
  int cycles;
  FRV_PROFILE_STATE *ps;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  adjust_float_register_busy (cpu, in_FRi, in_FRj, out_FRk, 1);
  adjust_double_register_busy (cpu, in_FRdoublei, in_FRdoublej, out_FRdoublek,
			       1);
  ps = CPU_PROFILE_STATE (cpu);
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, out_FRk);
  post_wait_for_FRdouble (cpu, in_FRdoublei);
  post_wait_for_FRdouble (cpu, in_FRdoublej);
  post_wait_for_FRdouble (cpu, out_FRdoublek);
  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      post_wait_for_SPR (cpu, FNER_FOR_FR (out_FRk));
      post_wait_for_SPR (cpu, FNER_FOR_FR (out_FRdoublek));
    }
  restore_float_register_busy (cpu, in_FRi, in_FRj, out_FRk, 1);
  restore_double_register_busy (cpu, in_FRdoublei, in_FRdoublej, out_FRdoublek,
				1);

  /* The latency of FRk will be at least the latency of the other inputs.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);
  update_FRdouble_latency (cpu, out_FRdoublek, ps->post_wait);

  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      update_SPR_latency (cpu, FNER_FOR_FR (out_FRk), ps->post_wait);
      update_SPR_latency (cpu, FNER_FOR_FR (out_FRdoublek), ps->post_wait);
    }

  /* Once initiated, post-processing will take 3 cycles.  */
  update_FR_ptime (cpu, out_FRk, 3);
  update_FRdouble_ptime (cpu, out_FRdoublek, 3);

  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      update_SPR_ptime (cpu, FNER_FOR_FR (out_FRk), 3);
      update_SPR_ptime (cpu, FNER_FOR_FR (out_FRdoublek), 3);
    }

  /* Mark this use of the register as a floating point op.  */
  if (out_FRk >= 0)
    set_use_is_fpop (cpu, out_FRk);
  if (out_FRdoublek >= 0)
    {
      set_use_is_fpop (cpu, out_FRdoublek);
      if (out_FRdoublek < 63)
	set_use_is_fpop (cpu, out_FRdoublek + 1);
    }

  return cycles;
}

int
frvbf_model_fr500_u_float_dual_arith (SIM_CPU *cpu, const IDESC *idesc,
				      int unit_num, int referenced,
				      INT in_FRi, INT in_FRj,
				      INT in_FRdoublei, INT in_FRdoublej,
				      INT out_FRk, INT out_FRdoublek)
{
  int cycles;
  INT dual_FRi;
  INT dual_FRj;
  INT dual_FRk;
  INT dual_FRdoublei;
  INT dual_FRdoublej;
  INT dual_FRdoublek;
  FRV_PROFILE_STATE *ps;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  dual_FRi = DUAL_REG (in_FRi);
  dual_FRj = DUAL_REG (in_FRj);
  dual_FRk = DUAL_REG (out_FRk);
  dual_FRdoublei = DUAL_DOUBLE (in_FRdoublei);
  dual_FRdoublej = DUAL_DOUBLE (in_FRdoublej);
  dual_FRdoublek = DUAL_DOUBLE (out_FRdoublek);

  adjust_float_register_busy (cpu, in_FRi, in_FRj, out_FRk, 1);
  adjust_float_register_busy (cpu, dual_FRi, dual_FRj, dual_FRk, 1);
  adjust_double_register_busy (cpu, in_FRdoublei, in_FRdoublej, out_FRdoublek,
			       1);
  adjust_double_register_busy (cpu, dual_FRdoublei, dual_FRdoublej,
			       dual_FRdoublek, 1);
  ps = CPU_PROFILE_STATE (cpu);
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, out_FRk);
  post_wait_for_FR (cpu, dual_FRi);
  post_wait_for_FR (cpu, dual_FRj);
  post_wait_for_FR (cpu, dual_FRk);
  post_wait_for_FRdouble (cpu, in_FRdoublei);
  post_wait_for_FRdouble (cpu, in_FRdoublej);
  post_wait_for_FRdouble (cpu, out_FRdoublek);
  post_wait_for_FRdouble (cpu, dual_FRdoublei);
  post_wait_for_FRdouble (cpu, dual_FRdoublej);
  post_wait_for_FRdouble (cpu, dual_FRdoublek);
  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      post_wait_for_SPR (cpu, FNER_FOR_FR (out_FRk));
      post_wait_for_SPR (cpu, FNER_FOR_FR (dual_FRk));
      post_wait_for_SPR (cpu, FNER_FOR_FR (out_FRdoublek));
      post_wait_for_SPR (cpu, FNER_FOR_FR (dual_FRdoublek));
    }
  restore_float_register_busy (cpu, in_FRi, in_FRj, out_FRk, 1);
  restore_float_register_busy (cpu, dual_FRi, dual_FRj, dual_FRk, 1);
  restore_double_register_busy (cpu, in_FRdoublei, in_FRdoublej, out_FRdoublek,
				1);
  restore_double_register_busy (cpu, dual_FRdoublei, dual_FRdoublej,
				dual_FRdoublek, 1);

  /* The latency of FRk will be at least the latency of the other inputs.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);
  update_FR_latency (cpu, dual_FRk, ps->post_wait);
  update_FRdouble_latency (cpu, out_FRdoublek, ps->post_wait);
  update_FRdouble_latency (cpu, dual_FRdoublek, ps->post_wait);

  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      update_SPR_latency (cpu, FNER_FOR_FR (out_FRk), ps->post_wait);
      update_SPR_latency (cpu, FNER_FOR_FR (dual_FRk), ps->post_wait);
      update_SPR_latency (cpu, FNER_FOR_FR (out_FRdoublek), ps->post_wait);
      update_SPR_latency (cpu, FNER_FOR_FR (dual_FRdoublek), ps->post_wait);
    }

  /* Once initiated, post-processing will take 3 cycles.  */
  update_FR_ptime (cpu, out_FRk, 3);
  update_FR_ptime (cpu, dual_FRk, 3);
  update_FRdouble_ptime (cpu, out_FRdoublek, 3);
  update_FRdouble_ptime (cpu, dual_FRdoublek, 3);

  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      update_SPR_ptime (cpu, FNER_FOR_FR (out_FRk), 3);
      update_SPR_ptime (cpu, FNER_FOR_FR (dual_FRk), 3);
      update_SPR_ptime (cpu, FNER_FOR_FR (out_FRdoublek), 3);
      update_SPR_ptime (cpu, FNER_FOR_FR (dual_FRdoublek), 3);
    }

  /* Mark this use of the register as a floating point op.  */
  if (out_FRk >= 0)
    set_use_is_fpop (cpu, out_FRk);
  if (dual_FRk >= 0)
    set_use_is_fpop (cpu, dual_FRk);
  if (out_FRdoublek >= 0)
    {
      set_use_is_fpop (cpu, out_FRdoublek);
      if (out_FRdoublek < 63)
	set_use_is_fpop (cpu, out_FRdoublek + 1);
    }
  if (dual_FRdoublek >= 0)
    {
      set_use_is_fpop (cpu, dual_FRdoublek);
      if (dual_FRdoublek < 63)
	set_use_is_fpop (cpu, dual_FRdoublek + 1);
    }

  return cycles;
}

int
frvbf_model_fr500_u_float_div (SIM_CPU *cpu, const IDESC *idesc,
			       int unit_num, int referenced,
			       INT in_FRi, INT in_FRj, INT out_FRk)
{
  int cycles;
  FRV_VLIW *vliw;
  int slot;
  FRV_PROFILE_STATE *ps;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  cycles = idesc->timing->units[unit_num].done;

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  adjust_float_register_busy (cpu, in_FRi, in_FRj, out_FRk, 1);
  ps = CPU_PROFILE_STATE (cpu);
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, out_FRk);
  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    post_wait_for_SPR (cpu, FNER_FOR_FR (out_FRk));
  vliw = CPU_VLIW (cpu);
  slot = vliw->next_slot - 1;
  slot = (*vliw->current_vliw)[slot] - UNIT_FM0;
  post_wait_for_fdiv (cpu, slot);
  restore_float_register_busy (cpu, in_FRi, in_FRj, out_FRk, 1);

  /* The latency of FRk will be at least the latency of the other inputs.  */
  /* Once initiated, post-processing will take 10 cycles.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);
  update_FR_ptime (cpu, out_FRk, 10);

  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      /* FNER has a latency of 10 cycles.  */
      update_SPR_latency (cpu, FNER_FOR_FR (out_FRk), ps->post_wait);
      update_SPR_ptime (cpu, FNER_FOR_FR (out_FRk), 10);
    }

  /* The latency of the fdiv unit will be at least the latency of the other
     inputs.  Once initiated, post-processing will take 9 cycles.  */
  update_fdiv_resource_latency (cpu, slot, ps->post_wait + 9);

  /* Mark this use of the register as a floating point op.  */
  set_use_is_fpop (cpu, out_FRk);

  return cycles;
}

int
frvbf_model_fr500_u_float_sqrt (SIM_CPU *cpu, const IDESC *idesc,
				int unit_num, int referenced,
				INT in_FRj, INT in_FRdoublej,
				INT out_FRk, INT out_FRdoublek)
{
  int cycles;
  FRV_VLIW *vliw;
  int slot;
  FRV_PROFILE_STATE *ps;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  cycles = idesc->timing->units[unit_num].done;

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  adjust_float_register_busy (cpu, -1, in_FRj, out_FRk, 1);
  adjust_double_register_busy (cpu, -1, in_FRdoublej, out_FRdoublek, 1);
  ps = CPU_PROFILE_STATE (cpu);
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, out_FRk);
  post_wait_for_FRdouble (cpu, in_FRdoublej);
  post_wait_for_FRdouble (cpu, out_FRdoublek);
  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    post_wait_for_SPR (cpu, FNER_FOR_FR (out_FRk));
  vliw = CPU_VLIW (cpu);
  slot = vliw->next_slot - 1;
  slot = (*vliw->current_vliw)[slot] - UNIT_FM0;
  post_wait_for_fsqrt (cpu, slot);
  restore_float_register_busy (cpu, -1, in_FRj, out_FRk, 1);
  restore_double_register_busy (cpu, -1, in_FRdoublej, out_FRdoublek, 1);

  /* The latency of FRk will be at least the latency of the other inputs.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);
  update_FRdouble_latency (cpu, out_FRdoublek, ps->post_wait);
  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    update_SPR_latency (cpu, FNER_FOR_FR (out_FRk), ps->post_wait);

  /* Once initiated, post-processing will take 15 cycles.  */
  update_FR_ptime (cpu, out_FRk, 15);
  update_FRdouble_ptime (cpu, out_FRdoublek, 15);

  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    update_SPR_ptime (cpu, FNER_FOR_FR (out_FRk), 15);

  /* The latency of the sqrt unit will be the latency of the other
     inputs plus 14 cycles.  */
  update_fsqrt_resource_latency (cpu, slot, ps->post_wait + 14);

  /* Mark this use of the register as a floating point op.  */
  if (out_FRk >= 0)
    set_use_is_fpop (cpu, out_FRk);
  if (out_FRdoublek >= 0)
    {
      set_use_is_fpop (cpu, out_FRdoublek);
      if (out_FRdoublek < 63)
	set_use_is_fpop (cpu, out_FRdoublek + 1);
    }

  return cycles;
}

int
frvbf_model_fr500_u_float_dual_sqrt (SIM_CPU *cpu, const IDESC *idesc,
				     int unit_num, int referenced,
				     INT in_FRj, INT out_FRk)
{
  int cycles;
  FRV_VLIW *vliw;
  int slot;
  INT dual_FRj;
  INT dual_FRk;
  FRV_PROFILE_STATE *ps;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  cycles = idesc->timing->units[unit_num].done;

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  dual_FRj = DUAL_REG (in_FRj);
  dual_FRk = DUAL_REG (out_FRk);
  adjust_float_register_busy (cpu, -1, in_FRj, out_FRk, 1);
  adjust_float_register_busy (cpu, -1, dual_FRj, dual_FRk, 1);
  ps = CPU_PROFILE_STATE (cpu);
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, out_FRk);
  post_wait_for_FR (cpu, dual_FRj);
  post_wait_for_FR (cpu, dual_FRk);

  vliw = CPU_VLIW (cpu);
  slot = vliw->next_slot - 1;
  slot = (*vliw->current_vliw)[slot] - UNIT_FM0;
  post_wait_for_fsqrt (cpu, slot);
  restore_float_register_busy (cpu, -1, in_FRj, out_FRk, 1);
  restore_float_register_busy (cpu, -1, dual_FRj, dual_FRk, 1);

  /* The latency of FRk will be at least the latency of the other inputs.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);
  update_FR_latency (cpu, dual_FRk, ps->post_wait);

  /* Once initiated, post-processing will take 15 cycles.  */
  update_FR_ptime (cpu, out_FRk, 15);
  update_FR_ptime (cpu, dual_FRk, 15);

  /* The latency of the sqrt unit will be at least the latency of the other
     inputs.  */
  update_fsqrt_resource_latency (cpu, slot, ps->post_wait + 14);

  /* Mark this use of the register as a floating point op.  */
  if (out_FRk >= 0)
    set_use_is_fpop (cpu, out_FRk);
  if (dual_FRk >= 0)
    set_use_is_fpop (cpu, dual_FRk);

  return cycles;
}

int
frvbf_model_fr500_u_float_compare (SIM_CPU *cpu, const IDESC *idesc,
				   int unit_num, int referenced,
				   INT in_FRi, INT in_FRj,
				   INT in_FRdoublei, INT in_FRdoublej,
				   INT out_FCCi_2)
{
  int cycles;
  FRV_PROFILE_STATE *ps;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  adjust_double_register_busy (cpu, in_FRdoublei, in_FRdoublej, -1, 1);
  ps = CPU_PROFILE_STATE (cpu);
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FRdouble (cpu, in_FRdoublei);
  post_wait_for_FRdouble (cpu, in_FRdoublej);
  post_wait_for_CCR (cpu, out_FCCi_2);
  restore_double_register_busy (cpu, in_FRdoublei, in_FRdoublej, -1, 1);

  /* The latency of FCCi_2 will be the latency of the other inputs plus 3
     cycles.  */
  update_CCR_latency (cpu, out_FCCi_2, ps->post_wait + 3);

  return cycles;
}

int
frvbf_model_fr500_u_float_dual_compare (SIM_CPU *cpu, const IDESC *idesc,
					int unit_num, int referenced,
					INT in_FRi, INT in_FRj,
					INT out_FCCi_2)
{
  int cycles;
  INT dual_FRi;
  INT dual_FRj;
  INT dual_FCCi_2;
  FRV_PROFILE_STATE *ps;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps = CPU_PROFILE_STATE (cpu);
  ps->post_wait = cycles;
  dual_FRi = DUAL_REG (in_FRi);
  dual_FRj = DUAL_REG (in_FRj);
  dual_FCCi_2 = out_FCCi_2 + 1;
  adjust_float_register_busy (cpu, in_FRi, in_FRj, -1, 1);
  adjust_float_register_busy (cpu, dual_FRi, dual_FRj, -1, 1);
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, dual_FRi);
  post_wait_for_FR (cpu, dual_FRj);
  post_wait_for_CCR (cpu, out_FCCi_2);
  post_wait_for_CCR (cpu, dual_FCCi_2);
  restore_float_register_busy (cpu, in_FRi, in_FRj, -1, 1);
  restore_float_register_busy (cpu, dual_FRi, dual_FRj, -1, 1);

  /* The latency of FCCi_2 will be the latency of the other inputs plus 3
     cycles.  */
  update_CCR_latency (cpu, out_FCCi_2, ps->post_wait + 3);
  update_CCR_latency (cpu, dual_FCCi_2, ps->post_wait + 3);

  return cycles;
}

int
frvbf_model_fr500_u_float_convert (SIM_CPU *cpu, const IDESC *idesc,
				   int unit_num, int referenced,
				   INT in_FRj, INT in_FRintj, INT in_FRdoublej,
				   INT out_FRk, INT out_FRintk,
				   INT out_FRdoublek)
{
  int cycles;
  FRV_PROFILE_STATE *ps;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps = CPU_PROFILE_STATE (cpu);
  ps->post_wait = cycles;
  adjust_float_register_busy (cpu, -1, in_FRj, out_FRk, 1);
  adjust_float_register_busy (cpu, -1, in_FRintj, out_FRintk, 1);
  adjust_double_register_busy (cpu, -1, in_FRdoublej, out_FRdoublek, 1);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, in_FRintj);
  post_wait_for_FRdouble (cpu, in_FRdoublej);
  post_wait_for_FR (cpu, out_FRk);
  post_wait_for_FR (cpu, out_FRintk);
  post_wait_for_FRdouble (cpu, out_FRdoublek);
  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      post_wait_for_SPR (cpu, FNER_FOR_FR (out_FRk));
      post_wait_for_SPR (cpu, FNER_FOR_FR (out_FRintk));
      post_wait_for_SPR (cpu, FNER_FOR_FR (out_FRdoublek));
    }
  restore_float_register_busy (cpu, -1, in_FRj, out_FRk, 1);
  restore_float_register_busy (cpu, -1, in_FRintj, out_FRintk, 1);
  restore_double_register_busy (cpu, -1, in_FRdoublej, out_FRdoublek, 1);

  /* The latency of FRk will be at least the latency of the other inputs.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);
  update_FR_latency (cpu, out_FRintk, ps->post_wait);
  update_FRdouble_latency (cpu, out_FRdoublek, ps->post_wait);

  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      update_SPR_latency (cpu, FNER_FOR_FR (out_FRk), ps->post_wait);
      update_SPR_latency (cpu, FNER_FOR_FR (out_FRintk), ps->post_wait);
      update_SPR_latency (cpu, FNER_FOR_FR (out_FRdoublek), ps->post_wait);
    }

  /* Once initiated, post-processing will take 3 cycles.  */
  update_FR_ptime (cpu, out_FRk, 3);
  update_FR_ptime (cpu, out_FRintk, 3);
  update_FRdouble_ptime (cpu, out_FRdoublek, 3);

  if (CGEN_ATTR_VALUE(idesc, idesc->attrs, CGEN_INSN_NON_EXCEPTING))
    {
      update_SPR_ptime (cpu, FNER_FOR_FR (out_FRk), 3);
      update_SPR_ptime (cpu, FNER_FOR_FR (out_FRintk), 3);
      update_SPR_ptime (cpu, FNER_FOR_FR (out_FRdoublek), 3);
    }

  /* Mark this use of the register as a floating point op.  */
  if (out_FRk >= 0)
    set_use_is_fpop (cpu, out_FRk);
  if (out_FRintk >= 0)
    set_use_is_fpop (cpu, out_FRintk);
  if (out_FRdoublek >= 0)
    {
      set_use_is_fpop (cpu, out_FRdoublek);
      set_use_is_fpop (cpu, out_FRdoublek + 1);
    }

  return cycles;
}

int
frvbf_model_fr500_u_float_dual_convert (SIM_CPU *cpu, const IDESC *idesc,
					int unit_num, int referenced,
					INT in_FRj, INT in_FRintj,
					INT out_FRk, INT out_FRintk)
{
  int cycles;
  INT dual_FRj;
  INT dual_FRintj;
  INT dual_FRk;
  INT dual_FRintk;
  FRV_PROFILE_STATE *ps;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps = CPU_PROFILE_STATE (cpu);
  ps->post_wait = cycles;
  dual_FRj = DUAL_REG (in_FRj);
  dual_FRintj = DUAL_REG (in_FRintj);
  dual_FRk = DUAL_REG (out_FRk);
  dual_FRintk = DUAL_REG (out_FRintk);
  adjust_float_register_busy (cpu, -1, in_FRj, out_FRk, 1);
  adjust_float_register_busy (cpu, -1, dual_FRj, dual_FRk, 1);
  adjust_float_register_busy (cpu, -1, in_FRintj, out_FRintk, 1);
  adjust_float_register_busy (cpu, -1, dual_FRintj, dual_FRintk, 1);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, in_FRintj);
  post_wait_for_FR (cpu, out_FRk);
  post_wait_for_FR (cpu, out_FRintk);
  post_wait_for_FR (cpu, dual_FRj);
  post_wait_for_FR (cpu, dual_FRintj);
  post_wait_for_FR (cpu, dual_FRk);
  post_wait_for_FR (cpu, dual_FRintk);
  restore_float_register_busy (cpu, -1, in_FRj, out_FRk, 1);
  restore_float_register_busy (cpu, -1, dual_FRj, dual_FRk, 1);
  restore_float_register_busy (cpu, -1, in_FRintj, out_FRintk, 1);
  restore_float_register_busy (cpu, -1, dual_FRintj, dual_FRintk, 1);

  /* The latency of FRk will be at least the latency of the other inputs.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);
  update_FR_latency (cpu, out_FRintk, ps->post_wait);
  update_FR_latency (cpu, dual_FRk, ps->post_wait);
  update_FR_latency (cpu, dual_FRintk, ps->post_wait);

  /* Once initiated, post-processing will take 3 cycles.  */
  update_FR_ptime (cpu, out_FRk, 3);
  update_FR_ptime (cpu, out_FRintk, 3);
  update_FR_ptime (cpu, dual_FRk, 3);
  update_FR_ptime (cpu, dual_FRintk, 3);

  /* Mark this use of the register as a floating point op.  */
  if (out_FRk >= 0)
    set_use_is_fpop (cpu, out_FRk);
  if (out_FRintk >= 0)
    set_use_is_fpop (cpu, out_FRintk);

  return cycles;
}

int
frvbf_model_fr500_u_media (SIM_CPU *cpu, const IDESC *idesc,
			   int unit_num, int referenced,
			   INT in_FRi, INT in_FRj, INT in_ACC40Si, INT in_ACCGi,
			   INT out_FRk,
			   INT out_ACC40Sk, INT out_ACC40Uk, INT out_ACCGk)
{
  int cycles;
  FRV_PROFILE_STATE *ps;
  const CGEN_INSN *insn;
  int is_media_s1;
  int is_media_s2;
  int busy_adjustment[] = {0, 0, 0};
  int *fr;
  int *acc;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  ps = CPU_PROFILE_STATE (cpu);
  insn = idesc->idata;

  /* If the previous use of the registers was a media op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  if (in_FRi >= 0)
    {
      if (use_is_media (cpu, in_FRi))
	{
	  busy_adjustment[0] = 2;
	  decrease_FR_busy (cpu, in_FRi, busy_adjustment[0]);
	}
      else
	enforce_full_fr_latency (cpu, in_FRi);
    }
  if (in_FRj >= 0 && in_FRj != in_FRi)
    {
      if (use_is_media (cpu, in_FRj))
	{
	  busy_adjustment[1] = 2;
	  decrease_FR_busy (cpu, in_FRj, busy_adjustment[1]);
	}
      else
	enforce_full_fr_latency (cpu, in_FRj);
    }
  if (out_FRk >= 0 && out_FRk != in_FRi && out_FRk != in_FRj)
    {
      if (use_is_media (cpu, out_FRk))
	{
	  busy_adjustment[2] = 2;
	  decrease_FR_busy (cpu, out_FRk, busy_adjustment[2]);
	}
      else
	enforce_full_fr_latency (cpu, out_FRk);
    }

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, out_FRk);
  post_wait_for_ACC (cpu, in_ACC40Si);
  post_wait_for_ACC (cpu, in_ACCGi);
  post_wait_for_ACC (cpu, out_ACC40Sk);
  post_wait_for_ACC (cpu, out_ACC40Uk);
  post_wait_for_ACC (cpu, out_ACCGk);

  /* Restore the busy cycles of the registers we used.  */
  fr = ps->fr_busy;
  if (in_FRi >= 0)
    fr[in_FRi] += busy_adjustment[0];
  if (in_FRj >= 0)
    fr[in_FRj] += busy_adjustment[1];
  if (out_FRk >= 0)
    fr[out_FRk] += busy_adjustment[2];

  /* The latency of tht output register will be at least the latency of the
     other inputs.  Once initiated, post-processing will take 3 cycles.  */
  if (out_FRk >= 0)
    {
      update_FR_latency (cpu, out_FRk, ps->post_wait);
      update_FR_ptime (cpu, out_FRk, 3);
      /* Mark this use of the register as a media op.  */
      set_use_is_media (cpu, out_FRk);
    }
  /* The latency of tht output accumulator will be at least the latency of the
     other inputs.  Once initiated, post-processing will take 1 cycle.  */
  if (out_ACC40Sk >= 0)
    update_ACC_latency (cpu, out_ACC40Sk, ps->post_wait + 1);
  if (out_ACC40Uk >= 0)
    update_ACC_latency (cpu, out_ACC40Uk, ps->post_wait + 1);
  if (out_ACCGk >= 0)
    update_ACC_latency (cpu, out_ACCGk, ps->post_wait + 1);

  return cycles;
}

int
frvbf_model_fr500_u_media_quad_arith (SIM_CPU *cpu, const IDESC *idesc,
				       int unit_num, int referenced,
				       INT in_FRi, INT in_FRj,
				       INT out_FRk)
{
  int cycles;
  INT dual_FRi;
  INT dual_FRj;
  INT dual_FRk;
  FRV_PROFILE_STATE *ps;
  int busy_adjustment[] = {0, 0, 0, 0, 0, 0};
  int *fr;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  ps = CPU_PROFILE_STATE (cpu);
  dual_FRi = DUAL_REG (in_FRi);
  dual_FRj = DUAL_REG (in_FRj);
  dual_FRk = DUAL_REG (out_FRk);

  /* If the previous use of the registers was a media op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  if (use_is_media (cpu, in_FRi))
    {
      busy_adjustment[0] = 2;
      decrease_FR_busy (cpu, in_FRi, busy_adjustment[0]);
    }
  else
    enforce_full_fr_latency (cpu, in_FRi);
  if (dual_FRi >= 0 && use_is_media (cpu, dual_FRi))
    {
      busy_adjustment[1] = 2;
      decrease_FR_busy (cpu, dual_FRi, busy_adjustment[1]);
    }
  else
    enforce_full_fr_latency (cpu, dual_FRi);
  if (in_FRj != in_FRi)
    {
      if (use_is_media (cpu, in_FRj))
	{
	  busy_adjustment[2] = 2;
	  decrease_FR_busy (cpu, in_FRj, busy_adjustment[2]);
	}
      else
	enforce_full_fr_latency (cpu, in_FRj);
      if (dual_FRj >= 0 && use_is_media (cpu, dual_FRj))
	{
	  busy_adjustment[3] = 2;
	  decrease_FR_busy (cpu, dual_FRj, busy_adjustment[3]);
	}
      else
	enforce_full_fr_latency (cpu, dual_FRj + 1);
    }
  if (out_FRk != in_FRi && out_FRk != in_FRj)
    {
      if (use_is_media (cpu, out_FRk))
	{
	  busy_adjustment[4] = 2;
	  decrease_FR_busy (cpu, out_FRk, busy_adjustment[4]);
	}
      else
	enforce_full_fr_latency (cpu, out_FRk);
      if (dual_FRk >= 0 && use_is_media (cpu, dual_FRk))
	{
	  busy_adjustment[5] = 2;
	  decrease_FR_busy (cpu, dual_FRk, busy_adjustment[5]);
	}
      else
	enforce_full_fr_latency (cpu, dual_FRk);
    }

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, dual_FRi);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, dual_FRj);
  post_wait_for_FR (cpu, out_FRk);
  post_wait_for_FR (cpu, dual_FRk);

  /* Restore the busy cycles of the registers we used.  */
  fr = ps->fr_busy;
  fr[in_FRi] += busy_adjustment[0];
  if (dual_FRi >= 0)
    fr[dual_FRi] += busy_adjustment[1];
  fr[in_FRj] += busy_adjustment[2];
  if (dual_FRj >= 0)
    fr[dual_FRj] += busy_adjustment[3];
  fr[out_FRk] += busy_adjustment[4];
  if (dual_FRk >= 0)
    fr[dual_FRk] += busy_adjustment[5];

  /* The latency of tht output register will be at least the latency of the
     other inputs.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);

  /* Once initiated, post-processing will take 3 cycles.  */
  update_FR_ptime (cpu, out_FRk, 3);

  /* Mark this use of the register as a media op.  */
  set_use_is_media (cpu, out_FRk);
  if (dual_FRk >= 0)
    {
      update_FR_latency (cpu, dual_FRk, ps->post_wait);
      update_FR_ptime (cpu, dual_FRk, 3);
      /* Mark this use of the register as a media op.  */
      set_use_is_media (cpu, dual_FRk);
    }

  return cycles;
}

int
frvbf_model_fr500_u_media_dual_mul (SIM_CPU *cpu, const IDESC *idesc,
				    int unit_num, int referenced,
				    INT in_FRi, INT in_FRj,
				    INT out_ACC40Sk, INT out_ACC40Uk)
{
  int cycles;
  INT dual_ACC40Sk;
  INT dual_ACC40Uk;
  FRV_PROFILE_STATE *ps;
  int busy_adjustment[] = {0, 0, 0, 0, 0, 0};
  int *fr;
  int *acc;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  ps = CPU_PROFILE_STATE (cpu);
  dual_ACC40Sk = DUAL_REG (out_ACC40Sk);
  dual_ACC40Uk = DUAL_REG (out_ACC40Uk);

  /* If the previous use of the registers was a media op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  if (use_is_media (cpu, in_FRi))
    {
      busy_adjustment[0] = 2;
      decrease_FR_busy (cpu, in_FRi, busy_adjustment[0]);
    }
  else
    enforce_full_fr_latency (cpu, in_FRi);
  if (in_FRj != in_FRi)
    {
      if (use_is_media (cpu, in_FRj))
	{
	  busy_adjustment[1] = 2;
	  decrease_FR_busy (cpu, in_FRj, busy_adjustment[1]);
	}
      else
	enforce_full_fr_latency (cpu, in_FRj);
    }
  if (out_ACC40Sk >= 0)
    {
      busy_adjustment[2] = 1;
      decrease_ACC_busy (cpu, out_ACC40Sk, busy_adjustment[2]);
    }
  if (dual_ACC40Sk >= 0)
    {
      busy_adjustment[3] = 1;
      decrease_ACC_busy (cpu, dual_ACC40Sk, busy_adjustment[3]);
    }
  if (out_ACC40Uk >= 0)
    {
      busy_adjustment[4] = 1;
      decrease_ACC_busy (cpu, out_ACC40Uk, busy_adjustment[4]);
    }
  if (dual_ACC40Uk >= 0)
    {
      busy_adjustment[5] = 1;
      decrease_ACC_busy (cpu, dual_ACC40Uk, busy_adjustment[5]);
    }

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_ACC (cpu, out_ACC40Sk);
  post_wait_for_ACC (cpu, dual_ACC40Sk);
  post_wait_for_ACC (cpu, out_ACC40Uk);
  post_wait_for_ACC (cpu, dual_ACC40Uk);

  /* Restore the busy cycles of the registers we used.  */
  fr = ps->fr_busy;
  acc = ps->acc_busy;
  fr[in_FRi] += busy_adjustment[0];
  fr[in_FRj] += busy_adjustment[1];
  if (out_ACC40Sk >= 0)
    acc[out_ACC40Sk] += busy_adjustment[2];
  if (dual_ACC40Sk >= 0)
    acc[dual_ACC40Sk] += busy_adjustment[3];
  if (out_ACC40Uk >= 0)
    acc[out_ACC40Uk] += busy_adjustment[4];
  if (dual_ACC40Uk >= 0)
    acc[dual_ACC40Uk] += busy_adjustment[5];

  /* The latency of tht output register will be at least the latency of the
     other inputs.  Once initiated, post-processing will take 1 cycle.  */
  if (out_ACC40Sk >= 0)
    update_ACC_latency (cpu, out_ACC40Sk, ps->post_wait + 1);
  if (dual_ACC40Sk >= 0)
    update_ACC_latency (cpu, dual_ACC40Sk, ps->post_wait + 1);
  if (out_ACC40Uk >= 0)
    update_ACC_latency (cpu, out_ACC40Uk, ps->post_wait + 1);
  if (dual_ACC40Uk >= 0)
    update_ACC_latency (cpu, dual_ACC40Uk, ps->post_wait + 1);

  return cycles;
}

int
frvbf_model_fr500_u_media_quad_mul (SIM_CPU *cpu, const IDESC *idesc,
				    int unit_num, int referenced,
				    INT in_FRi, INT in_FRj,
				    INT out_ACC40Sk, INT out_ACC40Uk)
{
  int cycles;
  INT FRi_1;
  INT FRj_1;
  INT ACC40Sk_1;
  INT ACC40Sk_2;
  INT ACC40Sk_3;
  INT ACC40Uk_1;
  INT ACC40Uk_2;
  INT ACC40Uk_3;
  FRV_PROFILE_STATE *ps;
  int busy_adjustment[] = {0, 0, 0, 0, 0, 0, 0 ,0};
  int *fr;
  int *acc;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  FRi_1 = DUAL_REG (in_FRi);
  FRj_1 = DUAL_REG (in_FRj);
  ACC40Sk_1 = DUAL_REG (out_ACC40Sk);
  ACC40Sk_2 = DUAL_REG (ACC40Sk_1);
  ACC40Sk_3 = DUAL_REG (ACC40Sk_2);
  ACC40Uk_1 = DUAL_REG (out_ACC40Uk);
  ACC40Uk_2 = DUAL_REG (ACC40Uk_1);
  ACC40Uk_3 = DUAL_REG (ACC40Uk_2);

  /* If the previous use of the registers was a media op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  ps = CPU_PROFILE_STATE (cpu);
  if (use_is_media (cpu, in_FRi))
    {
      busy_adjustment[0] = 2;
      decrease_FR_busy (cpu, in_FRi, busy_adjustment[0]);
    }
  else
    enforce_full_fr_latency (cpu, in_FRi);
  if (FRi_1 >= 0)
    {
      if (use_is_media (cpu, FRi_1))
	{
	  busy_adjustment[1] = 2;
	  decrease_FR_busy (cpu, FRi_1, busy_adjustment[1]);
	}
      else
	enforce_full_fr_latency (cpu, FRi_1);
    }
  if (in_FRj != in_FRi)
    {
      if (use_is_media (cpu, in_FRj))
	{
	  busy_adjustment[2] = 2;
	  decrease_FR_busy (cpu, in_FRj, busy_adjustment[2]);
	}
      else
	enforce_full_fr_latency (cpu, in_FRj);
      if (FRj_1 >= 0)
	{
	  if (use_is_media (cpu, FRj_1))
	    {
	      busy_adjustment[3] = 2;
	      decrease_FR_busy (cpu, FRj_1, busy_adjustment[3]);
	    }
	  else
	    enforce_full_fr_latency (cpu, FRj_1);
	}
    }
  if (out_ACC40Sk >= 0)
    {
      busy_adjustment[4] = 1;
      decrease_ACC_busy (cpu, out_ACC40Sk, busy_adjustment[4]);

      if (ACC40Sk_1 >= 0)
	{
	  busy_adjustment[5] = 1;
	  decrease_ACC_busy (cpu, ACC40Sk_1, busy_adjustment[5]);
	}
      if (ACC40Sk_2 >= 0)
	{
	  busy_adjustment[6] = 1;
	  decrease_ACC_busy (cpu, ACC40Sk_2, busy_adjustment[6]);
	}
      if (ACC40Sk_3 >= 0)
	{
	  busy_adjustment[7] = 1;
	  decrease_ACC_busy (cpu, ACC40Sk_3, busy_adjustment[7]);
	}
    }
  else if (out_ACC40Uk >= 0)
    {
      busy_adjustment[4] = 1;
      decrease_ACC_busy (cpu, out_ACC40Uk, busy_adjustment[4]);

      if (ACC40Uk_1 >= 0)
	{
	  busy_adjustment[5] = 1;
	  decrease_ACC_busy (cpu, ACC40Uk_1, busy_adjustment[5]);
	}
      if (ACC40Uk_2 >= 0)
	{
	  busy_adjustment[6] = 1;
	  decrease_ACC_busy (cpu, ACC40Uk_2, busy_adjustment[6]);
	}
      if (ACC40Uk_3 >= 0)
	{
	  busy_adjustment[7] = 1;
	  decrease_ACC_busy (cpu, ACC40Uk_3, busy_adjustment[7]);
	}
    }

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, FRi_1);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, FRj_1);
  post_wait_for_ACC (cpu, out_ACC40Sk);
  post_wait_for_ACC (cpu, ACC40Sk_1);
  post_wait_for_ACC (cpu, ACC40Sk_2);
  post_wait_for_ACC (cpu, ACC40Sk_3);
  post_wait_for_ACC (cpu, out_ACC40Uk);
  post_wait_for_ACC (cpu, ACC40Uk_1);
  post_wait_for_ACC (cpu, ACC40Uk_2);
  post_wait_for_ACC (cpu, ACC40Uk_3);

  /* Restore the busy cycles of the registers we used.  */
  fr = ps->fr_busy;
  acc = ps->acc_busy;
  fr[in_FRi] += busy_adjustment[0];
  if (FRi_1 >= 0)
    fr[FRi_1] += busy_adjustment[1];
  fr[in_FRj] += busy_adjustment[2];
  if (FRj_1 > 0)
    fr[FRj_1] += busy_adjustment[3];
  if (out_ACC40Sk >= 0)
    {
      acc[out_ACC40Sk] += busy_adjustment[4];
      if (ACC40Sk_1 >= 0)
	acc[ACC40Sk_1] += busy_adjustment[5];
      if (ACC40Sk_2 >= 0)
	acc[ACC40Sk_2] += busy_adjustment[6];
      if (ACC40Sk_3 >= 0)
	acc[ACC40Sk_3] += busy_adjustment[7];
    }
  else if (out_ACC40Uk >= 0)
    {
      acc[out_ACC40Uk] += busy_adjustment[4];
      if (ACC40Uk_1 >= 0)
	acc[ACC40Uk_1] += busy_adjustment[5];
      if (ACC40Uk_2 >= 0)
	acc[ACC40Uk_2] += busy_adjustment[6];
      if (ACC40Uk_3 >= 0)
	acc[ACC40Uk_3] += busy_adjustment[7];
    }

  /* The latency of tht output register will be at least the latency of the
     other inputs.  Once initiated, post-processing will take 1 cycle.  */
  if (out_ACC40Sk >= 0)
    {
      update_ACC_latency (cpu, out_ACC40Sk, ps->post_wait + 1);
      if (ACC40Sk_1 >= 0)
	update_ACC_latency (cpu, ACC40Sk_1, ps->post_wait + 1);
      if (ACC40Sk_2 >= 0)
	update_ACC_latency (cpu, ACC40Sk_2, ps->post_wait + 1);
      if (ACC40Sk_3 >= 0)
	update_ACC_latency (cpu, ACC40Sk_3, ps->post_wait + 1);
    }
  else if (out_ACC40Uk >= 0)
    {
      update_ACC_latency (cpu, out_ACC40Uk, ps->post_wait + 1);
      if (ACC40Uk_1 >= 0)
	update_ACC_latency (cpu, ACC40Uk_1, ps->post_wait + 1);
      if (ACC40Uk_2 >= 0)
	update_ACC_latency (cpu, ACC40Uk_2, ps->post_wait + 1);
      if (ACC40Uk_3 >= 0)
	update_ACC_latency (cpu, ACC40Uk_3, ps->post_wait + 1);
    }

  return cycles;
}

int
frvbf_model_fr500_u_media_quad_complex (SIM_CPU *cpu, const IDESC *idesc,
					int unit_num, int referenced,
					INT in_FRi, INT in_FRj,
					INT out_ACC40Sk)
{
  int cycles;
  INT FRi_1;
  INT FRj_1;
  INT ACC40Sk_1;
  FRV_PROFILE_STATE *ps;
  int busy_adjustment[] = {0, 0, 0, 0, 0, 0};
  int *fr;
  int *acc;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  FRi_1 = DUAL_REG (in_FRi);
  FRj_1 = DUAL_REG (in_FRj);
  ACC40Sk_1 = DUAL_REG (out_ACC40Sk);

  /* If the previous use of the registers was a media op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  ps = CPU_PROFILE_STATE (cpu);
  if (use_is_media (cpu, in_FRi))
    {
      busy_adjustment[0] = 2;
      decrease_FR_busy (cpu, in_FRi, busy_adjustment[0]);
    }
  else
    enforce_full_fr_latency (cpu, in_FRi);
  if (FRi_1 >= 0)
    {
      if (use_is_media (cpu, FRi_1))
	{
	  busy_adjustment[1] = 2;
	  decrease_FR_busy (cpu, FRi_1, busy_adjustment[1]);
	}
      else
	enforce_full_fr_latency (cpu, FRi_1);
    }
  if (in_FRj != in_FRi)
    {
      if (use_is_media (cpu, in_FRj))
	{
	  busy_adjustment[2] = 2;
	  decrease_FR_busy (cpu, in_FRj, busy_adjustment[2]);
	}
      else
	enforce_full_fr_latency (cpu, in_FRj);
      if (FRj_1 >= 0)
	{
	  if (use_is_media (cpu, FRj_1))
	    {
	      busy_adjustment[3] = 2;
	      decrease_FR_busy (cpu, FRj_1, busy_adjustment[3]);
	    }
	  else
	    enforce_full_fr_latency (cpu, FRj_1);
	}
    }
  if (out_ACC40Sk >= 0)
    {
      busy_adjustment[4] = 1;
      decrease_ACC_busy (cpu, out_ACC40Sk, busy_adjustment[4]);

      if (ACC40Sk_1 >= 0)
	{
	  busy_adjustment[5] = 1;
	  decrease_ACC_busy (cpu, ACC40Sk_1, busy_adjustment[5]);
	}
    }

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, FRi_1);
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, FRj_1);
  post_wait_for_ACC (cpu, out_ACC40Sk);
  post_wait_for_ACC (cpu, ACC40Sk_1);

  /* Restore the busy cycles of the registers we used.  */
  fr = ps->fr_busy;
  acc = ps->acc_busy;
  fr[in_FRi] += busy_adjustment[0];
  if (FRi_1 >= 0)
    fr[FRi_1] += busy_adjustment[1];
  fr[in_FRj] += busy_adjustment[2];
  if (FRj_1 > 0)
    fr[FRj_1] += busy_adjustment[3];
  if (out_ACC40Sk >= 0)
    {
      acc[out_ACC40Sk] += busy_adjustment[4];
      if (ACC40Sk_1 >= 0)
	acc[ACC40Sk_1] += busy_adjustment[5];
    }

  /* The latency of tht output register will be at least the latency of the
     other inputs.  Once initiated, post-processing will take 1 cycle.  */
  if (out_ACC40Sk >= 0)
    {
      update_ACC_latency (cpu, out_ACC40Sk, ps->post_wait + 1);
      if (ACC40Sk_1 >= 0)
	update_ACC_latency (cpu, ACC40Sk_1, ps->post_wait + 1);
    }

  return cycles;
}

int
frvbf_model_fr500_u_media_dual_expand (SIM_CPU *cpu, const IDESC *idesc,
				       int unit_num, int referenced,
				       INT in_FRi,
				       INT out_FRk)
{
  int cycles;
  INT dual_FRk;
  FRV_PROFILE_STATE *ps;
  int busy_adjustment[] = {0, 0, 0};
  int *fr;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  /* If the previous use of the registers was a media op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  dual_FRk = DUAL_REG (out_FRk);
  ps = CPU_PROFILE_STATE (cpu);
  if (use_is_media (cpu, in_FRi))
    {
      busy_adjustment[0] = 2;
      decrease_FR_busy (cpu, in_FRi, busy_adjustment[0]);
    }
  else
    enforce_full_fr_latency (cpu, in_FRi);
  if (out_FRk != in_FRi)
    {
      if (use_is_media (cpu, out_FRk))
	{
	  busy_adjustment[1] = 2;
	  decrease_FR_busy (cpu, out_FRk, busy_adjustment[1]);
	}
      else
	enforce_full_fr_latency (cpu, out_FRk);
    }
  if (dual_FRk >= 0 && dual_FRk != in_FRi)
    {
      if (use_is_media (cpu, dual_FRk))
	{
	  busy_adjustment[2] = 2;
	  decrease_FR_busy (cpu, dual_FRk, busy_adjustment[2]);
	}
      else
	enforce_full_fr_latency (cpu, dual_FRk);
    }

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, out_FRk);
  post_wait_for_FR (cpu, dual_FRk);

  /* Restore the busy cycles of the registers we used.  */
  fr = ps->fr_busy;
  fr[in_FRi] += busy_adjustment[0];
  fr[out_FRk] += busy_adjustment[1];
  if (dual_FRk >= 0)
    fr[dual_FRk] += busy_adjustment[2];

  /* The latency of the output register will be at least the latency of the
     other inputs.  Once initiated, post-processing will take 3 cycles.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);
  update_FR_ptime (cpu, out_FRk, 3);

  /* Mark this use of the register as a media op.  */
  set_use_is_media (cpu, out_FRk);
  if (dual_FRk >= 0)
    {
      update_FR_latency (cpu, dual_FRk, ps->post_wait);
      update_FR_ptime (cpu, dual_FRk, 3);

      /* Mark this use of the register as a media op.  */
      set_use_is_media (cpu, dual_FRk);
    }

  return cycles;
}

int
frvbf_model_fr500_u_media_dual_unpack (SIM_CPU *cpu, const IDESC *idesc,
				       int unit_num, int referenced,
				       INT in_FRi,
				       INT out_FRk)
{
  int cycles;
  INT FRi_1;
  INT FRk_1;
  INT FRk_2;
  INT FRk_3;
  FRV_PROFILE_STATE *ps;
  int busy_adjustment[] = {0, 0, 0, 0, 0, 0};
  int *fr;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  FRi_1 = DUAL_REG (in_FRi);
  FRk_1 = DUAL_REG (out_FRk);
  FRk_2 = DUAL_REG (FRk_1);
  FRk_3 = DUAL_REG (FRk_2);

  /* If the previous use of the registers was a media op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  ps = CPU_PROFILE_STATE (cpu);
  if (use_is_media (cpu, in_FRi))
    {
      busy_adjustment[0] = 2;
      decrease_FR_busy (cpu, in_FRi, busy_adjustment[0]);
    }
  else
    enforce_full_fr_latency (cpu, in_FRi);
  if (FRi_1 >= 0 && use_is_media (cpu, FRi_1))
    {
      busy_adjustment[1] = 2;
      decrease_FR_busy (cpu, FRi_1, busy_adjustment[1]);
    }
  else
    enforce_full_fr_latency (cpu, FRi_1);
  if (out_FRk != in_FRi)
    {
      if (use_is_media (cpu, out_FRk))
	{
	  busy_adjustment[2] = 2;
	  decrease_FR_busy (cpu, out_FRk, busy_adjustment[2]);
	}
      else
	enforce_full_fr_latency (cpu, out_FRk);
      if (FRk_1 >= 0 && FRk_1 != in_FRi)
	{
	  if (use_is_media (cpu, FRk_1))
	    {
	      busy_adjustment[3] = 2;
	      decrease_FR_busy (cpu, FRk_1, busy_adjustment[3]);
	    }
	  else
	    enforce_full_fr_latency (cpu, FRk_1);
	}
      if (FRk_2 >= 0 && FRk_2 != in_FRi)
	{
	  if (use_is_media (cpu, FRk_2))
	    {
	      busy_adjustment[4] = 2;
	      decrease_FR_busy (cpu, FRk_2, busy_adjustment[4]);
	    }
	  else
	    enforce_full_fr_latency (cpu, FRk_2);
	}
      if (FRk_3 >= 0 && FRk_3 != in_FRi)
	{
	  if (use_is_media (cpu, FRk_3))
	    {
	      busy_adjustment[5] = 2;
	      decrease_FR_busy (cpu, FRk_3, busy_adjustment[5]);
	    }
	  else
	    enforce_full_fr_latency (cpu, FRk_3);
	}
    }

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRi);
  post_wait_for_FR (cpu, FRi_1);
  post_wait_for_FR (cpu, out_FRk);
  post_wait_for_FR (cpu, FRk_1);
  post_wait_for_FR (cpu, FRk_2);
  post_wait_for_FR (cpu, FRk_3);

  /* Restore the busy cycles of the registers we used.  */
  fr = ps->fr_busy;
  fr[in_FRi] += busy_adjustment[0];
  if (FRi_1 >= 0)
    fr[FRi_1] += busy_adjustment[1];
  fr[out_FRk] += busy_adjustment[2];
  if (FRk_1 >= 0)
    fr[FRk_1] += busy_adjustment[3];
  if (FRk_2 >= 0)
    fr[FRk_2] += busy_adjustment[4];
  if (FRk_3 >= 0)
    fr[FRk_3] += busy_adjustment[5];

  /* The latency of tht output register will be at least the latency of the
     other inputs.  Once initiated, post-processing will take 3 cycles.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);
  update_FR_ptime (cpu, out_FRk, 3);

  /* Mark this use of the register as a media op.  */
  set_use_is_media (cpu, out_FRk);
  if (FRk_1 >= 0)
    {
      update_FR_latency (cpu, FRk_1, ps->post_wait);
      update_FR_ptime (cpu, FRk_1, 3);

      /* Mark this use of the register as a media op.  */
      set_use_is_media (cpu, FRk_1);
    }
  if (FRk_2 >= 0)
    {
      update_FR_latency (cpu, FRk_2, ps->post_wait);
      update_FR_ptime (cpu, FRk_2, 3);

      /* Mark this use of the register as a media op.  */
      set_use_is_media (cpu, FRk_2);
    }
  if (FRk_3 >= 0)
    {
      update_FR_latency (cpu, FRk_3, ps->post_wait);
      update_FR_ptime (cpu, FRk_3, 3);

      /* Mark this use of the register as a media op.  */
      set_use_is_media (cpu, FRk_3);
    }

  return cycles;
}

int
frvbf_model_fr500_u_media_dual_btoh (SIM_CPU *cpu, const IDESC *idesc,
				     int unit_num, int referenced,
				     INT in_FRj,
				     INT out_FRk)
{
  return frvbf_model_fr500_u_media_dual_expand (cpu, idesc, unit_num,
						referenced, in_FRj, out_FRk);
}

int
frvbf_model_fr500_u_media_dual_htob (SIM_CPU *cpu, const IDESC *idesc,
				     int unit_num, int referenced,
				     INT in_FRj,
				     INT out_FRk)
{
  int cycles;
  INT dual_FRj;
  FRV_PROFILE_STATE *ps;
  int busy_adjustment[] = {0, 0, 0};
  int *fr;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  /* If the previous use of the registers was a media op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  dual_FRj = DUAL_REG (in_FRj);
  ps = CPU_PROFILE_STATE (cpu);
  if (use_is_media (cpu, in_FRj))
    {
      busy_adjustment[0] = 2;
      decrease_FR_busy (cpu, in_FRj, busy_adjustment[0]);
    }
  else
    enforce_full_fr_latency (cpu, in_FRj);
  if (dual_FRj >= 0)
    {
      if (use_is_media (cpu, dual_FRj))
	{
	  busy_adjustment[1] = 2;
	  decrease_FR_busy (cpu, dual_FRj, busy_adjustment[1]);
	}
      else
	enforce_full_fr_latency (cpu, dual_FRj);
    }
  if (out_FRk != in_FRj)
    {
      if (use_is_media (cpu, out_FRk))
	{
	  busy_adjustment[2] = 2;
	  decrease_FR_busy (cpu, out_FRk, busy_adjustment[2]);
	}
      else
	enforce_full_fr_latency (cpu, out_FRk);
    }

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, dual_FRj);
  post_wait_for_FR (cpu, out_FRk);

  /* Restore the busy cycles of the registers we used.  */
  fr = ps->fr_busy;
  fr[in_FRj] += busy_adjustment[0];
  if (dual_FRj >= 0)
    fr[dual_FRj] += busy_adjustment[1];
  fr[out_FRk] += busy_adjustment[2];

  /* The latency of tht output register will be at least the latency of the
     other inputs.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);

  /* Once initiated, post-processing will take 3 cycles.  */
  update_FR_ptime (cpu, out_FRk, 3);

  /* Mark this use of the register as a media op.  */
  set_use_is_media (cpu, out_FRk);

  return cycles;
}

int
frvbf_model_fr500_u_media_dual_btohe (SIM_CPU *cpu, const IDESC *idesc,
				      int unit_num, int referenced,
				      INT in_FRj,
				      INT out_FRk)
{
  int cycles;
  INT FRk_1;
  INT FRk_2;
  INT FRk_3;
  FRV_PROFILE_STATE *ps;
  int busy_adjustment[] = {0, 0, 0, 0, 0};
  int *fr;

  if (model_insn == FRV_INSN_MODEL_PASS_1)
    return 0;

  /* The preprocessing can execute right away.  */
  cycles = idesc->timing->units[unit_num].done;

  FRk_1 = DUAL_REG (out_FRk);
  FRk_2 = DUAL_REG (FRk_1);
  FRk_3 = DUAL_REG (FRk_2);

  /* If the previous use of the registers was a media op,
     then their latency will be less than previously recorded.
     See Table 13-13 in the LSI.  */
  ps = CPU_PROFILE_STATE (cpu);
  if (use_is_media (cpu, in_FRj))
    {
      busy_adjustment[0] = 2;
      decrease_FR_busy (cpu, in_FRj, busy_adjustment[0]);
    }
  else
    enforce_full_fr_latency (cpu, in_FRj);
  if (out_FRk != in_FRj)
    {
      if (use_is_media (cpu, out_FRk))
	{
	  busy_adjustment[1] = 2;
	  decrease_FR_busy (cpu, out_FRk, busy_adjustment[1]);
	}
      else
	enforce_full_fr_latency (cpu, out_FRk);
      if (FRk_1 >= 0 && FRk_1 != in_FRj)
	{
	  if (use_is_media (cpu, FRk_1))
	    {
	      busy_adjustment[2] = 2;
	      decrease_FR_busy (cpu, FRk_1, busy_adjustment[2]);
	    }
	  else
	    enforce_full_fr_latency (cpu, FRk_1);
	}
      if (FRk_2 >= 0 && FRk_2 != in_FRj)
	{
	  if (use_is_media (cpu, FRk_2))
	    {
	      busy_adjustment[3] = 2;
	      decrease_FR_busy (cpu, FRk_2, busy_adjustment[3]);
	    }
	  else
	    enforce_full_fr_latency (cpu, FRk_2);
	}
      if (FRk_3 >= 0 && FRk_3 != in_FRj)
	{
	  if (use_is_media (cpu, FRk_3))
	    {
	      busy_adjustment[4] = 2;
	      decrease_FR_busy (cpu, FRk_3, busy_adjustment[4]);
	    }
	  else
	    enforce_full_fr_latency (cpu, FRk_3);
	}
    }

  /* The post processing must wait if there is a dependency on a FR
     which is not ready yet.  */
  ps->post_wait = cycles;
  post_wait_for_FR (cpu, in_FRj);
  post_wait_for_FR (cpu, out_FRk);
  post_wait_for_FR (cpu, FRk_1);
  post_wait_for_FR (cpu, FRk_2);
  post_wait_for_FR (cpu, FRk_3);

  /* Restore the busy cycles of the registers we used.  */
  fr = ps->fr_busy;
  fr[in_FRj] += busy_adjustment[0];
  fr[out_FRk] += busy_adjustment[1];
  if (FRk_1 >= 0)
    fr[FRk_1] += busy_adjustment[2];
  if (FRk_2 >= 0)
    fr[FRk_2] += busy_adjustment[3];
  if (FRk_3 >= 0)
    fr[FRk_3] += busy_adjustment[4];

  /* The latency of tht output register will be at least the latency of the
     other inputs.  Once initiated, post-processing will take 3 cycles.  */
  update_FR_latency (cpu, out_FRk, ps->post_wait);
  update_FR_ptime (cpu, out_FRk, 3);

  /* Mark this use of the register as a media op.  */
  set_use_is_media (cpu, out_FRk);
  if (FRk_1 >= 0)
    {
      update_FR_latency (cpu, FRk_1, ps->post_wait);
      update_FR_ptime (cpu, FRk_1, 3);

      /* Mark this use of the register as a media op.  */
      set_use_is_media (cpu, FRk_1);
    }
  if (FRk_2 >= 0)
    {
      update_FR_latency (cpu, FRk_2, ps->post_wait);
      update_FR_ptime (cpu, FRk_2, 3);

      /* Mark this use of the register as a media op.  */
      set_use_is_media (cpu, FRk_2);
    }
  if (FRk_3 >= 0)
    {
      update_FR_latency (cpu, FRk_3, ps->post_wait);
      update_FR_ptime (cpu, FRk_3, 3);

      /* Mark this use of the register as a media op.  */
      set_use_is_media (cpu, FRk_3);
    }

  return cycles;
}

int
frvbf_model_fr500_u_barrier (SIM_CPU *cpu, const IDESC *idesc,
			     int unit_num, int referenced)
{
  int cycles;
  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      int i;
      /* Wait for ALL resources.  */
      for (i = 0; i < 64; ++i)
	{
	  enforce_full_fr_latency (cpu, i);
	  vliw_wait_for_GR (cpu, i);
	  vliw_wait_for_FR (cpu, i);
	  vliw_wait_for_ACC (cpu, i);
	}
      for (i = 0; i < 8; ++i)
	vliw_wait_for_CCR (cpu, i);
      for (i = 0; i < 2; ++i)
	{
	  vliw_wait_for_idiv_resource (cpu, i);
	  vliw_wait_for_fdiv_resource (cpu, i);
	  vliw_wait_for_fsqrt_resource (cpu, i);
	}
      handle_resource_wait (cpu);
      for (i = 0; i < 64; ++i)
	{
	  load_wait_for_GR (cpu, i);
	  load_wait_for_FR (cpu, i);
	}
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  return cycles;
}

int
frvbf_model_fr500_u_membar (SIM_CPU *cpu, const IDESC *idesc,
			    int unit_num, int referenced)
{
  int cycles;
  if (model_insn == FRV_INSN_MODEL_PASS_1)
    {
      int i;
      /* Wait for ALL resources, except GR and ICC.  */
      for (i = 0; i < 64; ++i)
	{
	  enforce_full_fr_latency (cpu, i);
	  vliw_wait_for_FR (cpu, i);
	  vliw_wait_for_ACC (cpu, i);
	}
      for (i = 0; i < 4; ++i)
	vliw_wait_for_CCR (cpu, i);
      for (i = 0; i < 2; ++i)
	{
	  vliw_wait_for_idiv_resource (cpu, i);
	  vliw_wait_for_fdiv_resource (cpu, i);
	  vliw_wait_for_fsqrt_resource (cpu, i);
	}
      handle_resource_wait (cpu);
      for (i = 0; i < 64; ++i)
	{
	  load_wait_for_FR (cpu, i);
	}
      trace_vliw_wait_cycles (cpu);
      return 0;
    }

  cycles = idesc->timing->units[unit_num].done;
  return cycles;
}

/* The frv machine is a fictional implementation of the fr500 which implements
   all frv architectural features.  */
int
frvbf_model_frv_u_exec (SIM_CPU *cpu, const IDESC *idesc,
			    int unit_num, int referenced)
{
  return idesc->timing->units[unit_num].done;
}

/* The simple machine is a fictional implementation of the fr500 which
   implements limited frv architectural features.  */
int
frvbf_model_simple_u_exec (SIM_CPU *cpu, const IDESC *idesc,
			    int unit_num, int referenced)
{
  return idesc->timing->units[unit_num].done;
}

/* The tomcat machine is models a prototype fr500 machine which had a few
   bugs and restrictions to work around.  */
int
frvbf_model_tomcat_u_exec (SIM_CPU *cpu, const IDESC *idesc,
			    int unit_num, int referenced)
{
  return idesc->timing->units[unit_num].done;
}

#endif /* WITH_PROFILE_MODEL_P */