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/* Remote debugging interface for EST-300 ICE, for GDB

   Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001

   Free Software Foundation, Inc.

   Contributed by Cygnus Support.

   Written by Steve Chamberlain for Cygnus Support.

   Re-written by Stu Grossman of Cygnus Support

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 2 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place - Suite 330,

   Boston, MA 02111-1307, USA.  */

#include "defs.h"

#include "gdbcore.h"

#include "target.h"

#include "monitor.h"

#include "serial.h"

#include "regcache.h"

static void est_open (char *args, int from_tty);

static void

est_supply_register (char *regname, int regnamelen, char *val, int vallen)

{

  int regno;

  if (regnamelen != 2)

    return;

  switch (regname[0])

    {

    case 'S':

      if (regname[1] != 'R')

        return;

      regno = PS_REGNUM;

      break;

    case 'P':

      if (regname[1] != 'C')

        return;

      regno = PC_REGNUM;

      break;

    case 'D':

      if (regname[1] < '0' || regname[1] > '7')

        return;

      regno = regname[1] - '0' + D0_REGNUM;

      break;

    case 'A':

      if (regname[1] < '0' || regname[1] > '7')

        return;

      regno = regname[1] - '0' + A0_REGNUM;

      break;

    default:

      return;

    }

  monitor_supply_register (regno, val);

}

/*

 * This array of registers needs to match the indexes used by GDB. The

 * whole reason this exists is because the various ROM monitors use

 * different names than GDB does, and don't support all the

 * registers either. So, typing "info reg sp" becomes a "r30".

 */

static const char *

est_regname (int index)

{

  static char *regnames[] =

  {

    "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",

    "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",

    "SR", "PC",

  };

  if ((index >= (sizeof (regnames) /  sizeof (regnames[0])))

       || (index < 0) || (index >= NUM_REGS))

    return NULL;

  else

    return regnames[index];

}

/*

 * Define the monitor command strings. Since these are passed directly

 * through to a printf style function, we need can include formatting

 * strings. We also need a CR or LF on the end.

 */

static struct target_ops est_ops;

static char *est_inits[] =

{"he\r",                        /* Resets the prompt, and clears repeated cmds */

 NULL};

static struct monitor_ops est_cmds;

static void

init_est_cmds (void)

{

  est_cmds.flags = MO_CLR_BREAK_USES_ADDR | MO_FILL_USES_ADDR | MO_NEED_REGDUMP_AFTER_CONT |

    MO_SREC_ACK | MO_SREC_ACK_PLUS;

  est_cmds.init = est_inits;    /* Init strings */

  est_cmds.cont = "go\r";       /* continue command */

  est_cmds.step = "sidr\r";     /* single step */

  est_cmds.stop = "\003";       /* ^C interrupts the program */

  est_cmds.set_break = "sb %x\r";       /* set a breakpoint */

  est_cmds.clr_break = "rb %x\r";       /* clear a breakpoint */

  est_cmds.clr_all_break = "rb\r";      /* clear all breakpoints */

  est_cmds.fill = "bfb %x %x %x\r";     /* fill (start end val) */

  est_cmds.setmem.cmdb = "smb %x %x\r";         /* setmem.cmdb (addr, value) */

  est_cmds.setmem.cmdw = "smw %x %x\r";         /* setmem.cmdw (addr, value) */

  est_cmds.setmem.cmdl = "sml %x %x\r";         /* setmem.cmdl (addr, value) */

  est_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */

  est_cmds.setmem.resp_delim = NULL;    /* setreg.resp_delim */

  est_cmds.setmem.term = NULL;  /* setreg.term */

  est_cmds.setmem.term_cmd = NULL;      /* setreg.term_cmd */

  est_cmds.getmem.cmdb = "dmb %x %x\r";         /* getmem.cmdb (addr, len) */

  est_cmds.getmem.cmdw = "dmw %x %x\r";         /* getmem.cmdw (addr, len) */

  est_cmds.getmem.cmdl = "dml %x %x\r";         /* getmem.cmdl (addr, len) */

  est_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, len) */

  est_cmds.getmem.resp_delim = ": ";    /* getmem.resp_delim */

  est_cmds.getmem.term = NULL;  /* getmem.term */

  est_cmds.getmem.term_cmd = NULL;      /* getmem.term_cmd */

  est_cmds.setreg.cmd = "sr %s %x\r";   /* setreg.cmd (name, value) */

  est_cmds.setreg.resp_delim = NULL;    /* setreg.resp_delim */

  est_cmds.setreg.term = NULL;  /* setreg.term */

  est_cmds.setreg.term_cmd = NULL;      /* setreg.term_cmd */

  est_cmds.getreg.cmd = "dr %s\r";      /* getreg.cmd (name) */

  est_cmds.getreg.resp_delim = " = ";   /* getreg.resp_delim */

  est_cmds.getreg.term = NULL;  /* getreg.term */

  est_cmds.getreg.term_cmd = NULL;      /* getreg.term_cmd */

  est_cmds.dump_registers = "dr\r";     /* dump_registers */

  est_cmds.register_pattern = "\\(\\w+\\) = \\([0-9a-fA-F]+\\)";        /* register_pattern */

  est_cmds.supply_register = est_supply_register;       /* supply_register */

  est_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */

  est_cmds.load = "dl\r";       /* download command */

  est_cmds.loadresp = "+";      /* load response */

  est_cmds.prompt = ">BKM>";    /* monitor command prompt */

  est_cmds.line_term = "\r";    /* end-of-line terminator */

  est_cmds.cmd_end = NULL;      /* optional command terminator */

  est_cmds.target = &est_ops;   /* target operations */

  est_cmds.stopbits = SERIAL_1_STOPBITS;        /* number of stop bits */

  est_cmds.regnames = NULL;

  est_cmds.regname = est_regname; /*register names*/

  est_cmds.magic = MONITOR_OPS_MAGIC;   /* magic */

}                               /* init_est_cmds */

static void

est_open (char *args, int from_tty)

{

  monitor_open (args, &est_cmds, from_tty);

}

void

_initialize_est (void)

{

  init_est_cmds ();

  init_monitor_ops (&est_ops);

  est_ops.to_shortname = "est";

  est_ops.to_longname = "EST background debug monitor";

  est_ops.to_doc = "Debug via the EST BDM.\n\

Specify the serial device it is connected to (e.g. /dev/ttya).";

  est_ops.to_open = est_open;

  add_target (&est_ops);

}