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   "rom68k",                     /* to_shortname */
  49   "Rom68k debug monitor for the IDP Eval board", /* to_longname */
  50   "Debug on a Motorola IDP eval board running the ROM68K monitor.\n\
  51 Specify the serial device it is connected to (e.g. /dev/ttya).",
  52   rom68k_open,                  /* to_open */
  53   monitor_close,                /* to_close */
  54   NULL,                         /* to_attach */
  55   monitor_detach,               /* to_detach */
  56   monitor_resume,               /* to_resume */
  57   monitor_wait,                 /* to_wait */
  58   monitor_fetch_registers,      /* to_fetch_registers */
  59   monitor_store_registers,      /* to_store_registers */
  60   monitor_prepare_to_store,     /* to_prepare_to_store */
  61   monitor_xfer_memory,          /* to_xfer_memory */
  62   monitor_files_info,           /* to_files_info */
  63   monitor_insert_breakpoint,    /* to_insert_breakpoint */
  64   monitor_remove_breakpoint,    /* to_remove_breakpoint */
  65   0,                            /* to_terminal_init */
  66   0,                            /* to_terminal_inferior */
  67   0,                            /* to_terminal_ours_for_output */
  68   0,                            /* to_terminal_ours */
  69   0,                            /* to_terminal_info */
  70   monitor_kill,                 /* to_kill */
  71   monitor_load,                 /* to_load */
  72   0,                            /* to_lookup_symbol */
  73   NULL,                         /* to_create_inferior */
  74   monitor_mourn_inferior,       /* to_mourn_inferior */
  75   0,                            /* to_can_run */
  76   0,                            /* to_notice_signals */
  77   0,                            /* to_stop */
  78   process_stratum,              /* to_stratum */
  79   0,                            /* to_next */
  80   1,                            /* to_has_all_memory */
  81   1,                            /* to_has_memory */
  82   1,                            /* to_has_stack */
  83   1,                            /* to_has_registers */
  84   1,                            /* to_has_execution */
  85   0,                            /* sections */
  86   0,                            /* sections_end */
  87   OPS_MAGIC                     /* to_magic */
  88 };
  89
  90 static char *rom68k_loadtypes[] = {"none", "srec", "default", NULL};
  91 static char *rom68k_loadprotos[] = {"none", NULL};
  92
  93 static struct monitor_ops rom68k_cmds =
  94 {
  95   1,                            /* 1 for ASCII, 0 for binary */
  96   ".\r\r",                      /* monitor init string */
  97   "go \r",                      /* execute or usually GO command */
  98   "go \r",                      /* continue command */
  99   "st \r",                      /* single step */
 100   "db %x\r",                    /* set a breakpoint */
 101   "cb %x\r",                    /* clear a breakpoint */
 102   0,                            /* 0 for number, 1 for address */
 103   {
 104     "pm %x %x\r",               /* setmem.cmd (addr, value) */
 105     NULL,                       /* setreg.resp_delim */
 106     NULL,                       /* setreg.term */
 107     NULL,                       /* setreg.term_cmd */
 108   },
 109   {
 110     "dm %x 1\r",                /* getmem.cmd (addr) */
 111     "  ",                       /* getmem.resp_delim */
 112     NULL,                       /* getmem.term */
 113     NULL,                       /* getmem.term_cmd */
 114   },
 115   {
 116     "pr %s %x\r",               /* setreg.cmd (name, value) */
 117     NULL,                       /* setreg.resp_delim */
 118     NULL,                       /* setreg.term */
 119     NULL                        /* setreg.term_cmd */
 120   },
 121   {
 122     "pr %s\r",                  /* getreg.cmd (name) */
 123     ":  ",                      /* getreg.resp_delim */
 124     "= ",                       /* getreg.term */
 125     ".\r"                       /* getreg.term_cmd */
 126   },
 127   "dc\r",                       /* download command */
 128   "ROM68K :->",                 /* monitor command prompt */
 129   "=",                          /* end-of-command delimitor */
 130   ".\r",                        /* optional command terminator */
 131   &rom68k_ops,                  /* target operations */
 132   rom68k_loadtypes,             /* loadtypes */
 133   rom68k_loadprotos,            /* loadprotos */
 134   "9600",                       /* supported baud rates */
 135   SERIAL_1_STOPBITS,            /* number of stop bits */
 136   rom68k_regnames               /* registers names */
 137   };
 138
 139 void
 140 rom68k_open(args, from_tty)
 141      char *args;
 142      int from_tty;
 143 {
 144   monitor_open (args, &rom68k_cmds, from_tty);
 145 }
 146
 147 void
 148 _initialize_rom68k ()
 149 {
 150   add_target (&rom68k_ops);
 151
 152   /* this is the default, since it's the only baud rate supported by the hardware */
 153   baud_rate = 9600;
 154 }