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 #include "serial.h"
  27
  28 void rom68k_open();
  29
  30 /*
  31  * this array of registers need to match the indexes used by GDB. The
  32  * whole reason this exists is cause the various ROM monitors use
  33  * different strings than GDB does, and doesn't support all the
  34  * registers either. So, typing "info reg sp" becomes a "r30".
  35  */
  36 static char *rom68k_regnames[NUM_REGS] = {
  37   "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
  38   "A0", "A1", "A2", "A3", "A4", "A5", "A6", "ISP",
  39   "SR", "PC" };
  40
  41 /*
  42  * Define the monitor command strings. Since these are passed directly
  43  * through to a printf style function, we need can include formatting
  44  * strings. We also need a CR or LF on the end.
  45  */
  46
  47 static struct target_ops rom68k_ops =
  48 {
  49   "rom68k",
  50   "Rom68k debug monitor for the IDP Eval board",
  51   "Debug on a Motorola IDP eval board running the ROM68K monitor.\n\
  52 Specify the serial device it is connected to (e.g. /dev/ttya).",
  53   rom68k_open,
  54   monitor_close,
  55   NULL,
  56   monitor_detach,
  57   monitor_resume,
  58   monitor_wait,
  59   monitor_fetch_registers,
  60   monitor_store_registers,
  61   monitor_prepare_to_store,
  62   monitor_xfer_memory,
  63   monitor_files_info,
  64   monitor_insert_breakpoint,
  65   monitor_remove_breakpoint,    /* Breakpoints */
  66   0,
  67   0,
  68   0,
  69   0,
  70   0,                            /* Terminal handling */
  71   monitor_kill,
  72   monitor_load,                 /* load */
  73   0,                            /* lookup_symbol */
  74   monitor_create_inferior,
  75   monitor_mourn_inferior,
  76   0,                            /* can_run */
  77   0,                            /* notice_signals */
  78   0,                            /* to_stop */
  79   process_stratum,
  80   0,                            /* next */
  81   1,
  82   1,
  83   1,
  84   1,
  85   1,                            /* all mem, mem, stack, regs, exec */
  86   0,
  87   0,                            /* Section pointers */
  88   OPS_MAGIC                     /* Always the last thing */
  89 };
  90
  91 static char *rom68k_loadtypes[] = {"none", "srec", "default", NULL};
  92 static char *rom68k_loadprotos[] = {"none", NULL};
  93
  94 static struct monitor_ops rom68k_cmds =
  95 {
  96   1,                            /* 1 for ASCII, 0 for binary */
  97   ".\r\r",                      /* monitor init string */
  98   "go \r",                      /* execute or usually GO command */
  99   "go \r",                      /* continue command */
 100   "st \r",                      /* single step */
 101   "db %x\r",                    /* set a breakpoint */
 102   "cb %x\r",                    /* clear a breakpoint */
 103   0,                            /* 0 for number, 1 for address */
 104   {
 105     "pm %x %x\r",               /* setmem.cmd (addr, value) */
 106     NULL,                       /* setreg.resp_delim */
 107     NULL,                       /* setreg.term */
 108     NULL,                       /* setreg.term_cmd */
 109   },
 110   {
 111     "dm %x 1\r",                /* getmem.cmd (addr) */
 112     "  ",                       /* getmem.resp_delim */
 113     NULL,                       /* getmem.term */
 114     NULL,                       /* getmem.term_cmd */
 115   },
 116   {
 117     "pr %s %x\r",               /* setreg.cmd (name, value) */
 118     NULL,                       /* setreg.resp_delim */
 119     NULL,                       /* setreg.term */
 120     NULL                        /* setreg.term_cmd */
 121   },
 122   {
 123     "pr %s\r",                  /* getreg.cmd (name) */
 124     ":  ",                      /* getreg.resp_delim */
 125     "= ",                       /* getreg.term */
 126     ".\r"                       /* getreg.term_cmd */
 127   },
 128   "dc\r",                       /* download command */
 129   "ROM68K :->",                 /* monitor command prompt */
 130   "=",                          /* end-of-command delimitor */
 131   ".\r",                        /* optional command terminator */
 132   &rom68k_ops,                  /* target operations */
 133   rom68k_loadtypes,             /* loadtypes */
 134   rom68k_loadprotos,            /* loadprotos */
 135   "9600",                       /* supported baud rates */
 136   SERIAL_1_STOPBITS,            /* number of stop bits */
 137   rom68k_regnames               /* registers names */
 138   };
 139
 140 void
 141 rom68k_open(args, from_tty)
 142      char *args;
 143      int from_tty;
 144 {
 145   monitor_open (args, &rom68k_cmds, from_tty);
 146 }
 147
 148 void
 149 _initialize_rom68k ()
 150 {
 151   add_target (&rom68k_ops);
 152
 153   /* this is the default, since it's the only baud rate supported by the hardware */
 154   baud_rate = 9600;
 155 }