/* Parameters for Intel 960 running NINDY monitor, for GDB, the GNU debugger.
   Copyright (C) 1990-1991 Free Software Foundation, Inc.
   Contributed by Intel Corporation and 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.  */

/*****************************************************************************
 * Definitions to target GDB to an i960 debugged over a serial line.
 ******************************************************************************/

#include "i960/tm-i960.h"

/* forward declarations */
struct frame_info;

/* Override the standard gdb prompt when compiled for this target.  */

#define	DEFAULT_PROMPT	"(gdb960) "

/* Additional command line options accepted by nindy gdb's, for handling
   the remote-nindy.c interface.  These should really be target-specific
   rather than architecture-specific.  */

extern int nindy_old_protocol;	/* nonzero if old NINDY serial protocol */
extern int nindy_initial_brk;	/* Send a BREAK to reset board first */
extern char *nindy_ttyname;	/* Name of serial port to talk to nindy */

#define	ADDITIONAL_OPTIONS \
	{"O", no_argument, &nindy_old_protocol, 1},	\
	{"brk", no_argument, &nindy_initial_brk, 1},	\
	{"ser", required_argument, 0, 1004},	/* 1004 is magic cookie for ADDL_CASES */

#define	ADDITIONAL_OPTION_CASES	\
	case 1004:	/* -ser option:  remote nindy auto-start */	\
	  nindy_ttyname = optarg;	\
	  break;

#define	ADDITIONAL_OPTION_HELP \
	"\
  -O                Use old protocol to talk to a Nindy target\n\
  -brk              Send a break to a Nindy target to reset it.\n\
  -ser SERIAL       Open remote Nindy session to SERIAL port.\n\
"

/* If specified on the command line, open tty for talking to nindy,
   and download the executable file if one was specified.  */

extern void nindy_open (char *name, int from_tty);
#define	ADDITIONAL_OPTION_HANDLER					\
	if (nindy_ttyname != NULL)					\
          {								\
            if (catch_command_errors (nindy_open, nindy_ttyname,	\
				      !batch, RETURN_MASK_ALL))		\
	      {								\
                if (execarg != NULL)					\
                  catch_command_errors (target_load, execarg, !batch,	\
					RETURN_MASK_ALL);		\
	      }								\
	  }

/* If configured for i960 target, we take control before main loop
   and demand that we configure for a nindy target.  */

#define	BEFORE_MAIN_LOOP_HOOK	\
  nindy_before_main_loop();

extern void
  nindy_before_main_loop ();	/* In remote-nindy.c */

/* FRAME_CHAIN_VALID returns zero if the given frame is the outermost one
   and has no caller.

   On the i960, each various target system type defines FRAME_CHAIN_VALID,
   since it differs between NINDY and VxWorks, the two currently supported
   targets types.  */

extern int nindy_frame_chain_valid (CORE_ADDR, struct frame_info *);
#define	FRAME_CHAIN_VALID(chain, thisframe) nindy_frame_chain_valid (chain, thisframe)

extern int
  nindy_frame_chain_valid ();	/* See nindy-tdep.c */

/* Sequence of bytes for breakpoint instruction */

#define BREAKPOINT {0x00, 0x3e, 0x00, 0x66}

/* Amount ip must be decremented by after a breakpoint.
 * This is often the number of bytes in BREAKPOINT but not always.
 */

#define DECR_PC_AFTER_BREAK 0

#undef REGISTER_CONVERT_TO_VIRTUAL
#undef REGISTER_CONVERT_TO_RAW
#undef REGISTER_CONVERTIBLE