sim/cris/devices.c

   1 /* CRIS device support
   2    Copyright (C) 2004, 2005 Free Software Foundation, Inc.
   3    Contributed by Axis Communications.
   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 2, or (at your option)
  10 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 along
  18 with this program; if not, write to the Free Software Foundation, Inc.,
  19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 /* Based on the i960 devices.c (for the purposes, the same as all the
  22    others).  */
  23
  24 #include "sim-main.h"
  25
  26 #ifdef HAVE_DV_SOCKSER
  27 #include "dv-sockser.h"
  28 #endif
  29
  30 /* Placeholder definition.  */
  31 struct _device { char dummy; } cris_devices;
  32
  33 void
  34 device_error (device *me ATTRIBUTE_UNUSED,
  35               char *message ATTRIBUTE_UNUSED,
  36               ...)
  37 {
  38   abort ();
  39 }
  40
  41 int
  42 device_io_read_buffer (device *me ATTRIBUTE_UNUSED,
  43                        void *source ATTRIBUTE_UNUSED,
  44                        int space ATTRIBUTE_UNUSED,
  45                        address_word addr ATTRIBUTE_UNUSED,
  46                        unsigned nr_bytes ATTRIBUTE_UNUSED,
  47                        SIM_DESC sd ATTRIBUTE_UNUSED,
  48                        SIM_CPU *cpu ATTRIBUTE_UNUSED,
  49                        sim_cia cia ATTRIBUTE_UNUSED)
  50 {
  51   abort ();
  52 }
  53
  54 int
  55 device_io_write_buffer (device *me ATTRIBUTE_UNUSED,
  56                         const void *source,
  57                         int space ATTRIBUTE_UNUSED,
  58                         address_word addr, unsigned nr_bytes,
  59                         SIM_DESC sd, SIM_CPU *cpu, sim_cia cia)
  60 {
  61   static const unsigned char ok[] = { 4, 0, 0, 0x90};
  62   static const unsigned char bad[] = { 8, 0, 0, 0x90};
  63
  64   if (addr == 0x90000004 && memcmp (source, ok, sizeof ok) == 0)
  65     cris_break_13_handler (cpu, 1, 0, 0, 0, 0, 0, 0, cia);
  66   else if (addr == 0x90000008
  67            && memcmp (source, bad, sizeof bad) == 0)
  68     cris_break_13_handler (cpu, 1, 34, 0, 0, 0, 0, 0, cia);
  69
  70   /* If it wasn't one of those, send an invalid-memory signal.  */
  71   sim_core_signal (sd, cpu, cia, 0, nr_bytes, addr,
  72                    write_transfer, sim_core_unmapped_signal);
  73 }