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/* Generic support for remote debugging interfaces.

   Copyright 1993 Free Software Foundation, Inc.

   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.  */

#ifndef REMOTE_UTILS_H

#define REMOTE_UTILS_H

#include "serial.h"

#include "target.h"

#include "dcache.h"

/* Stuff that should be shared (and handled consistently) among the various

   remote targets.  */

struct _sr_settings

  {

    unsigned int timeout;

    int retries;

    char *device;

    serial_t desc;

  };

extern struct _sr_settings sr_settings;

/* get and set debug value. */

#define sr_get_debug()                  (remote_debug)

#define sr_set_debug(newval)            (remote_debug = (newval))

/* get and set timeout. */

#define sr_get_timeout()                (sr_settings.timeout)

#define sr_set_timeout(newval)          (sr_settings.timeout = (newval))

/* get and set device. */

#define sr_get_device()                 (sr_settings.device)

#define sr_set_device(newval) \

{ \

    if (sr_settings.device) free(sr_settings.device); \

    sr_settings.device = (newval); \

}

/* get and set descriptor value. */

#define sr_get_desc()                   (sr_settings.desc)

#define sr_set_desc(newval)             (sr_settings.desc = (newval))

/* get and set retries. */

#define sr_get_retries()                (sr_settings.retries)

#define sr_set_retries(newval)          (sr_settings.retries = (newval))

#define sr_is_open()                    (sr_settings.desc != NULL)

#define sr_check_open()         { if (!sr_is_open()) \

                                    error ("Remote device not open"); }

struct gr_settings

  {

    /* This is our data cache. */

    DCACHE *dcache;

    char *prompt;

    struct target_ops *ops;

    int (*clear_all_breakpoints) PARAMS ((void));

    memxferfunc readfunc;

    memxferfunc writefunc;

    void (*checkin) PARAMS ((void));

  };

extern struct gr_settings *gr_settings;

/* get and set dcache. */

#define gr_get_dcache()                 (gr_settings->dcache)

#define gr_set_dcache(newval)           (gr_settings->dcache = (newval))

/* get and set prompt. */

#define gr_get_prompt()                 (gr_settings->prompt)

#define gr_set_prompt(newval)           (gr_settings->prompt = (newval))

/* get and set ops. */

#define gr_get_ops()                    (gr_settings->ops)

#define gr_set_ops(newval)              (gr_settings->ops = (newval))

#define gr_clear_all_breakpoints()      ((gr_settings->clear_all_breakpoints)())

#define gr_checkin()                    ((gr_settings->checkin)())

/* Keep discarding input until we see the prompt.

   The convention for dealing with the prompt is that you

   o give your command

   o *then* wait for the prompt.

   Thus the last thing that a procedure does with the serial line

   will be an gr_expect_prompt().  Exception:  resume does not

   wait for the prompt, because the terminal is being handed over

   to the inferior.  However, the next thing which happens after that

   is a bug_wait which does wait for the prompt.

   Note that this includes abnormal exit, e.g. error().  This is

   necessary to prevent getting into states from which we can't

   recover.  */

#define gr_expect_prompt()      sr_expect(gr_get_prompt())

int gr_fetch_word PARAMS ((CORE_ADDR addr));

int gr_multi_scan PARAMS ((char *list[], int passthrough));

int sr_get_hex_digit PARAMS ((int ignore_space));

int sr_pollchar PARAMS ((void));

int sr_readchar PARAMS ((void));

int sr_timed_read PARAMS ((char *buf, int n));

long sr_get_hex_word PARAMS ((void));

void gr_close PARAMS ((int quitting));

void gr_create_inferior PARAMS ((char *execfile, char *args, char **env));

void gr_detach PARAMS ((char *args, int from_tty));

void gr_files_info PARAMS ((struct target_ops * ops));

void gr_generic_checkin PARAMS ((void));

void gr_kill PARAMS ((void));

void gr_mourn PARAMS ((void));

void gr_prepare_to_store PARAMS ((void));

void gr_store_word PARAMS ((CORE_ADDR addr, int word));

void sr_expect PARAMS ((char *string));

void sr_get_hex_byte PARAMS ((char *byt));

void sr_scan_args PARAMS ((char *proto, char *args));

void sr_write PARAMS ((char *a, int l));

void sr_write_cr PARAMS ((char *s));

void gr_open PARAMS ((char *args, int from_tty,

                      struct gr_settings * gr_settings));

void gr_load_image PARAMS ((char *, int from_tty));

#endif /* REMOTE_UTILS_H */