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/* Target operations for the remote server for GDB.

   Copyright 2002

   Free Software Foundation, Inc.

   Contributed by MontaVista Software.

   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 "server.h"

struct target_ops *the_target;

void

set_desired_inferior (int use_general)

{

  struct thread_info *found;

  if (use_general == 1)

    {

      found = (struct thread_info *) find_inferior_id (&all_threads,

                                                       general_thread);

    }

  else

    {

      found = NULL;

      /* If we are continuing any (all) thread(s), use step_thread

         to decide which thread to step and/or send the specified

         signal to.  */

      if (step_thread > 0 && (cont_thread == 0 || cont_thread == -1))

        found = (struct thread_info *) find_inferior_id (&all_threads,

                                                         step_thread);

      if (found == NULL)

        found = (struct thread_info *) find_inferior_id (&all_threads,

                                                         cont_thread);

    }

  if (found == NULL)

    current_inferior = (struct thread_info *) all_threads.head;

  else

    current_inferior = found;

}

void

read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)

{

  (*the_target->read_memory) (memaddr, myaddr, len);

  check_mem_read (memaddr, myaddr, len);

}

int

write_inferior_memory (CORE_ADDR memaddr, const char *myaddr, int len)

{

  /* Lacking cleanups, there is some potential for a memory leak if the

     write fails and we go through error().  Make sure that no more than

     one buffer is ever pending by making BUFFER static.  */

  static char *buffer = 0;

  int res;

  if (buffer != NULL)

    free (buffer);

  buffer = malloc (len);

  memcpy (buffer, myaddr, len);

  check_mem_write (memaddr, buffer, len);

  res = (*the_target->write_memory) (memaddr, buffer, len);

  free (buffer);

  buffer = NULL;

  return res;

}

unsigned char

mywait (char *statusp, int connected_wait)

{

  unsigned char ret;

  if (connected_wait)

    server_waiting = 1;

  ret = (*the_target->wait) (statusp);

  if (connected_wait)

    server_waiting = 0;

  return ret;

}

void

set_target_ops (struct target_ops *target)

{

  the_target = (struct target_ops *) malloc (sizeof (*the_target));

  memcpy (the_target, target, sizeof (*the_target));

}