gdb/rom68k-rom.c

   1 /* Remote target glue for the rom68k ROM monitor. This was running on a
   2 Motorola IDP board.
   3
   4    Copyright 1988, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
   5
   6 This file is part of GDB.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; if not, write to the Free Software
  20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  21
  22 #include "defs.h"
  23 #include "gdbcore.h"
  24 #include "target.h"
  25 #include "monitor.h"
  26
  27 extern int baud_rate;
  28
  29 void rom68k_open();
  30 void monitor_open();
  31
  32 /*
  33  * this array of registers need to match the indexes used by GDB. The
  34  * whole reason this exists is cause the various ROM monitors use
  35  * different strings than GDB does, and doesn't support all the
  36  * registers either. So, typing "info reg sp" becomes a "r30".
  37  */
  38 static char *rom68k_regnames[] = {
  39   "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", "a0", "a1",
  40   "a2", "a3", "a4", "a5", "a6", "usp", "ssp","pc",   "",   "",
  41   "",   "",   "",   "",   "",   "",   "",   "",   "",   "",
  42   "",   "",   "",   "",   "",   "",    "",
  43   "",   "",   "",   "",   "",   "",    "",    "",  "",  "",
  44   "",   "",   "",   "",   "",   "",    "",    "",  "",  "",
  45   "",   "",   "",   "",   "",   "",    "",
  46   "",   "",   "",   "",   "",   "",    "",    "",
  47   "",   "",   "",   "",   "",   "",    "",    "",
  48   "",   "",   "",   "",   "",   "",    "",    "",
  49   "",   "",   "",   "",   "",   "",    "",    "",
  50   "",   "",   "",   "",   "",   "",    "",    "",
  51   "",   "",   "",   "",   "",   "",    "",    "",
  52   "",   "",   "",   "",   "",   "",    "",    "",
  53   "",   "",   "",   "",   "",   "",    "",    ""
  54 };
  55
  56 /*
  57  * Define the monitor command strings. Since these are passed directly
  58  * through to a printf style function, we need can include formatting
  59  * strings. We also need a CR or LF on the end.
  60  */
  61
  62 struct target_ops rom68k_ops = {
  63   "rom68k",
  64   "Rom68k debug monitor for the IDP Eval board",
  65   "Debug on a Motorola IDP eval board running the ROM68K monitor.\n\
  66 Specify the serial device it is connected to (e.g. /dev/ttya).",
  67   rom68k_open,
  68   monitor_close,
  69   monitor_attach,
  70   monitor_detach,
  71   monitor_resume,
  72   monitor_wait,
  73   monitor_fetch_register,
  74   monitor_store_register,
  75   monitor_prepare_to_store,
  76   monitor_xfer_inferior_memory,
  77   monitor_files_info,
  78   monitor_insert_breakpoint,
  79   monitor_remove_breakpoint,    /* Breakpoints */
  80   0,
  81   0,
  82   0,
  83   0,
  84   0,                            /* Terminal handling */
  85   monitor_kill,
  86   monitor_load,                 /* load */
  87   0,                            /* lookup_symbol */
  88   monitor_create_inferior,
  89   monitor_mourn_inferior,
  90   0,                            /* can_run */
  91   0,                            /* notice_signals */
  92   0,                            /* to_stop */
  93   process_stratum,
  94   0,                            /* next */
  95   1,
  96   1,
  97   1,
  98   1,
  99   1,                            /* all mem, mem, stack, regs, exec */
 100   0,
 101   0,                            /* Section pointers */
 102   OPS_MAGIC                     /* Always the last thing */
 103 };
 104
 105 struct monitor_ops rom68k_cmds = {
 106   1,                                    /* 1 for ASCII, 0 for binary */
 107   "\n",                                 /* monitor init string */
 108   "go \n",                              /* execute or usually GO command */
 109   "go \n",                              /* continue command */
 110   "st \n",                              /* single step */
 111   "db %x\n",                            /* set a breakpoint */
 112   "cb %x\r",                            /* clear a breakpoint */
 113   0,                                    /* 0 for number, 1 for address */
 114   {
 115     "pm %x %x\r",                       /* set memory */
 116     "=",                                /* delimiter */
 117     "",                                 /* the result */
 118   },
 119   {
 120     "dm %x 1\r",                        /* get memory */
 121     "",                                 /* delimiter */
 122     "",                                 /* the result */
 123   },
 124   {
 125     "pr %s %x\r",                       /* set a register */
 126     "",                                 /* delimiter between registers */
 127     "",                                 /* the result */
 128   },
 129   {
 130     "pr %s\n",                          /* get a register */
 131     ":",                                /* delimiter between registers */
 132     "",                                 /* the result */
 133   },
 134   "dc\n",                               /* download command */
 135   "ROM68K :->",                         /* monitor command prompt */
 136   "=",                                  /* end-of-command delimitor */
 137   ".\n",                                /* optional command terminator */
 138   &rom68k_ops,                          /* target operations */
 139   "none,srec,default",                  /* load types */
 140   "none",                               /* load protocols */
 141   "9600",                               /* supported baud rates */
 142   1,                                    /* number of stop bits */
 143   rom68k_regnames                       /* registers names */
 144 };
 145
 146 void
 147 rom68k_open(args, from_tty)
 148      char *args;
 149      int from_tty;
 150 {
 151   target_preopen(from_tty);
 152   push_target  (&rom68k_ops);
 153   push_monitor (&rom68k_cmds);
 154   monitor_open (args, "rom68k", from_tty);
 155 }
 156
 157 void
 158 _initialize_rom68k ()
 159 {
 160   add_target (&rom68k_ops);
 161
 162   /* this is the default, since it's the only baud rate supported by the hardware */
 163   baud_rate = 9600;
 164 }