gdb/abug-rom.c

   1 /* Remote debugging interface for ABug Rom monitor for GDB, the GNU debugger.
   2    Copyright 1995, 1996, 1998 Free Software Foundation, Inc.
   3
   4    Written by Rob Savoye of Cygnus Support
   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., 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 #include "defs.h"
  24 #include "gdbcore.h"
  25 #include "target.h"
  26 #include "monitor.h"
  27 #include "serial.h"
  28
  29 /* Prototypes for local functions. */
  30
  31 static void abug_open (char *args, int from_tty);
  32
  33 static void
  34 abug_supply_register (char *regname, int regnamelen, char *val, int vallen)
  35 {
  36   int regno;
  37
  38   if (regnamelen != 2)
  39     return;
  40
  41   switch (regname[0])
  42     {
  43     case 'S':
  44       if (regname[1] != 'R')
  45         return;
  46       regno = PS_REGNUM;
  47       break;
  48     case 'P':
  49       if (regname[1] != 'C')
  50         return;
  51       regno = PC_REGNUM;
  52       break;
  53     case 'D':
  54       if (regname[1] < '0' || regname[1] > '7')
  55         return;
  56       regno = regname[1] - '0' + D0_REGNUM;
  57       break;
  58     case 'A':
  59       if (regname[1] < '0' || regname[1] > '7')
  60         return;
  61       regno = regname[1] - '0' + A0_REGNUM;
  62       break;
  63     default:
  64       return;
  65     }
  66
  67   monitor_supply_register (regno, val);
  68 }
  69
  70 /*
  71  * This array of registers needs to match the indexes used by GDB. The
  72  * whole reason this exists is because the various ROM monitors use
  73  * different names than GDB does, and don't support all the
  74  * registers either. So, typing "info reg sp" becomes an "A7".
  75  */
  76
  77 static char *abug_regnames[NUM_REGS] =
  78 {
  79   "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
  80   "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
  81   "PC",
  82 };
  83
  84 /*
  85  * Define the monitor command strings. Since these are passed directly
  86  * through to a printf style function, we need can include formatting
  87  * strings. We also need a CR or LF on the end.
  88  */
  89
  90 static struct target_ops abug_ops;
  91
  92 static char *abug_inits[] =
  93 {"\r", NULL};
  94
  95 static struct monitor_ops abug_cmds;
  96
  97 static void
  98 init_abug_cmds (void)
  99 {
 100   abug_cmds.flags = MO_CLR_BREAK_USES_ADDR;
 101   abug_cmds.init = abug_inits;  /* Init strings */
 102   abug_cmds.cont = "g\r";       /* continue command */
 103   abug_cmds.step = "t\r";       /* single step */
 104   abug_cmds.stop = NULL;        /* interrupt command */
 105   abug_cmds.set_break = "br %x\r";      /* set a breakpoint */
 106   abug_cmds.clr_break = "nobr %x\r";    /* clear a breakpoint */
 107   abug_cmds.clr_all_break = "nobr\r";   /* clear all breakpoints */
 108   abug_cmds.fill = "bf %x:%x %x;b\r";   /* fill (start count val) */
 109   abug_cmds.setmem.cmdb = "ms %x %02x\r";       /* setmem.cmdb (addr, value) */
 110   abug_cmds.setmem.cmdw = "ms %x %04x\r";       /* setmem.cmdw (addr, value) */
 111   abug_cmds.setmem.cmdl = "ms %x %08x\r";       /* setmem.cmdl (addr, value) */
 112   abug_cmds.setmem.cmdll = NULL;        /* setmem.cmdll (addr, value) */
 113   abug_cmds.setmem.resp_delim = NULL;   /* setreg.resp_delim */
 114   abug_cmds.setmem.term = NULL; /* setreg.term */
 115   abug_cmds.setmem.term_cmd = NULL;     /* setreg.term_cmd */
 116   abug_cmds.getmem.cmdb = "md %x:%x;b\r";       /* getmem.cmdb (addr, len) */
 117   abug_cmds.getmem.cmdw = "md %x:%x;b\r";       /* getmem.cmdw (addr, len) */
 118   abug_cmds.getmem.cmdl = "md %x:%x;b\r";       /* getmem.cmdl (addr, len) */
 119   abug_cmds.getmem.cmdll = NULL;        /* getmem.cmdll (addr, len) */
 120   abug_cmds.getmem.resp_delim = " ";    /* getmem.resp_delim */
 121   abug_cmds.getmem.term = NULL; /* getmem.term */
 122   abug_cmds.getmem.term_cmd = NULL;     /* getmem.term_cmd */
 123   abug_cmds.setreg.cmd = "rm %s %x\r";  /* setreg.cmd (name, value) */
 124   abug_cmds.setreg.resp_delim = "=";    /* setreg.resp_delim */
 125   abug_cmds.setreg.term = "? "; /* setreg.term */
 126   abug_cmds.setreg.term_cmd = ".\r";    /* setreg.term_cmd */
 127   abug_cmds.getreg.cmd = "rm %s\r";     /* getreg.cmd (name) */
 128   abug_cmds.getreg.resp_delim = "=";    /* getreg.resp_delim */
 129   abug_cmds.getreg.term = "? "; /* getreg.term */
 130   abug_cmds.getreg.term_cmd = ".\r";    /* getreg.term_cmd */
 131   abug_cmds.dump_registers = "rd\r";    /* dump_registers */
 132   abug_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";    /* register_pattern */
 133   abug_cmds.supply_register = abug_supply_register;     /* supply_register */
 134   abug_cmds.load_routine = NULL;        /* load_routine (defaults to SRECs) */
 135   abug_cmds.load = "lo 0\r";    /* download command */
 136   abug_cmds.loadresp = "\n";    /* load response */
 137   abug_cmds.prompt = "135Bug>"; /* monitor command prompt */
 138   abug_cmds.line_term = "\r";   /* end-of-line terminator */
 139   abug_cmds.cmd_end = NULL;     /* optional command terminator */
 140   abug_cmds.target = &abug_ops; /* target operations */
 141   abug_cmds.stopbits = SERIAL_1_STOPBITS;       /* number of stop bits */
 142   abug_cmds.regnames = abug_regnames;   /* registers names */
 143   abug_cmds.magic = MONITOR_OPS_MAGIC;  /* magic */
 144 };
 145
 146 static void
 147 abug_open (char *args, int from_tty)
 148 {
 149   monitor_open (args, &abug_cmds, from_tty);
 150 }
 151
 152 void
 153 _initialize_abug_rom (void)
 154 {
 155   init_abug_cmds ();
 156   init_monitor_ops (&abug_ops);
 157
 158   abug_ops.to_shortname = "abug";
 159   abug_ops.to_longname = "ABug monitor";
 160   abug_ops.to_doc = "Debug via the ABug monitor.\n\
 161 Specify the serial device it is connected to (e.g. /dev/ttya).";
 162   abug_ops.to_open = abug_open;
 163
 164   add_target (&abug_ops);
 165 }