sim/frv/devices.c

   1 /* frv device support
   2    Copyright (C) 1998-2015 Free Software Foundation, Inc.
   3    Contributed by Red Hat.
   4
   5 This file is part of the GNU simulators.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 /* ??? All of this is just to get something going.  wip!  */
  21
  22 #include "sim-main.h"
  23
  24 device frv_devices;
  25
  26 int
  27 device_io_read_buffer (device *me, void *source, int space,
  28                        address_word addr, unsigned nr_bytes,
  29                        SIM_DESC sd, SIM_CPU *cpu, sim_cia cia)
  30 {
  31   if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT)
  32     return nr_bytes;
  33
  34   return nr_bytes;
  35 }
  36
  37 int
  38 device_io_write_buffer (device *me, const void *source, int space,
  39                         address_word addr, unsigned nr_bytes,
  40                         SIM_DESC sd, SIM_CPU *cpu, sim_cia cia)
  41 {
  42
  43 #if WITH_SCACHE
  44   if (addr == MCCR_ADDR)
  45     {
  46       if ((*(const char *) source & MCCR_CP) != 0)
  47         scache_flush (sd);
  48       return nr_bytes;
  49     }
  50 #endif
  51
  52   if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT)
  53     return nr_bytes;
  54
  55   return nr_bytes;
  56 }
  57
  58 void device_error (device *me, const char *message, ...) {}