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/* Remote debugging with the XLNT Designs, Inc (XDI) NetROM.

   Copyright 1990, 1991, 1992, 1995, 1998, 1999, 2000

   Free Software Foundation, Inc.

   Contributed by:

   Roger Moyers

   XLNT Designs, Inc.

   15050 Avenue of Science, Suite 106

   San Diego, CA  92128

   (619)487-9320

   roger@xlnt.com

   Adapted from work done at Cygnus Support in remote-nindy.c,

   later merged in by Stan Shebs at Cygnus.

   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 "gdbcmd.h"

#include "serial.h"

#include "target.h"

/* Default ports used to talk with the NetROM.  */

#define DEFAULT_NETROM_LOAD_PORT    1236

#define DEFAULT_NETROM_CONTROL_PORT 1237

static void nrom_close (int quitting);

/* New commands.  */

static void nrom_passthru (char *, int);

/* We talk to the NetROM over these sockets.  */

static serial_t load_desc = NULL;

static serial_t ctrl_desc = NULL;

static int load_port = DEFAULT_NETROM_LOAD_PORT;

static int control_port = DEFAULT_NETROM_CONTROL_PORT;

static char nrom_hostname[100];

/* Forward data declaration. */

extern struct target_ops nrom_ops;

/* Scan input from the remote system, until STRING is found.  Print chars that

   don't match.  */

static int

expect (char *string)

{

  char *p = string;

  int c;

  immediate_quit++;

  while (1)

    {

      c = SERIAL_READCHAR (ctrl_desc, 5);

      if (c == *p++)

        {

          if (*p == '\0')

            {

              immediate_quit--;

              return 0;

            }

        }

      else

        {

          fputc_unfiltered (c, gdb_stdout);

          p = string;

          if (c == *p)

            p++;

        }

    }

}

static void

nrom_kill (void)

{

  nrom_close (0);

}

static serial_t

open_socket (char *name, int port)

{

  char sockname[100];

  serial_t desc;

  sprintf (sockname, "%s:%d", name, port);

  desc = SERIAL_OPEN (sockname);

  if (!desc)

    perror_with_name (sockname);

  return desc;

}

static void

load_cleanup (void)

{

  SERIAL_CLOSE (load_desc);

  load_desc = NULL;

}

/* Download a file specified in ARGS to the netROM.  */

static void

nrom_load (char *args, int fromtty)

{

  int fd, rd_amt, fsize;

  bfd *pbfd;

  asection *section;

  char *downloadstring = "download 0\n";

  struct cleanup *old_chain;

  /* Tell the netrom to get ready to download. */

  if (SERIAL_WRITE (ctrl_desc, downloadstring, strlen (downloadstring)))

    error ("nrom_load: control_send() of `%s' failed", downloadstring);

  expect ("Waiting for a connection...\n");

  load_desc = open_socket (nrom_hostname, load_port);

  old_chain = make_cleanup (load_cleanup, 0);

  pbfd = bfd_openr (args, 0);

  if (pbfd)

    {

      make_cleanup (bfd_close, pbfd);

      if (!bfd_check_format (pbfd, bfd_object))

        error ("\"%s\": not in executable format: %s",

               args, bfd_errmsg (bfd_get_error ()));

      for (section = pbfd->sections; section; section = section->next)

        {

          if (bfd_get_section_flags (pbfd, section) & SEC_ALLOC)

            {

              bfd_vma section_address;

              unsigned long section_size;

              const char *section_name;

              section_name = bfd_get_section_name (pbfd, section);

              section_address = bfd_get_section_vma (pbfd, section);

              section_size = bfd_section_size (pbfd, section);

              if (bfd_get_section_flags (pbfd, section) & SEC_LOAD)

                {

                  file_ptr fptr;

                  printf_filtered ("[Loading section %s at %x (%d bytes)]\n",

                                   section_name, section_address,

                                   section_size);

                  fptr = 0;

                  while (section_size > 0)

                    {

                      char buffer[1024];

                      int count;

                      count = min (section_size, 1024);

                      bfd_get_section_contents (pbfd, section, buffer, fptr,

                                                count);

                      SERIAL_WRITE (load_desc, buffer, count);

                      section_address += count;

                      fptr += count;

                      section_size -= count;

                    }

                }

              else

                /* BSS and such */

                {

                  printf_filtered ("[section %s: not loading]\n",

                                   section_name);

                }

            }

        }

    }

  else

    error ("\"%s\": Could not open", args);

  do_cleanups (old_chain);

}

/* Open a connection to the remote NetROM devices.  */

static void

nrom_open (char *name, int from_tty)

{

  int errn;

  if (!name || strchr (name, '/') || strchr (name, ':'))

    error (

            "To open a NetROM connection, you must specify the hostname\n\

or IP address of the NetROM device you wish to use.");

  strcpy (nrom_hostname, name);

  target_preopen (from_tty);

  unpush_target (&nrom_ops);

  ctrl_desc = open_socket (nrom_hostname, control_port);

  push_target (&nrom_ops);

  if (from_tty)

    printf_filtered ("Connected to NetROM device \"%s\"\n", nrom_hostname);

}

/* Close out all files and local state before this target loses control. */

static void

nrom_close (int quitting)

{

  if (load_desc)

    SERIAL_CLOSE (load_desc);

  if (ctrl_desc)

    SERIAL_CLOSE (ctrl_desc);

}

/* Pass arguments directly to the NetROM. */

static void

nrom_passthru (char *args, int fromtty)

{

  char buf[1024];

  sprintf (buf, "%s\n", args);

  if (SERIAL_WRITE (ctrl_desc, buf, strlen (buf)))

    error ("nrom_reset: control_send() of `%s'failed", args);

}

static void

nrom_mourn (void)

{

  unpush_target (&nrom_ops);

  generic_mourn_inferior ();

}

/* Define the target vector. */

struct target_ops nrom_ops;

static void

init_nrom_ops (void)

{

  nrom_ops.to_shortname = "nrom";

  nrom_ops.to_longname = "Remote XDI `NetROM' target";

  nrom_ops.to_doc = "Remote debug using a NetROM over Ethernet";

  nrom_ops.to_open = nrom_open;

  nrom_ops.to_close = nrom_close;

  nrom_ops.to_attach = NULL;

  nrom_ops.to_post_attach = NULL;

  nrom_ops.to_require_attach = NULL;

  nrom_ops.to_detach = NULL;

  nrom_ops.to_require_detach = NULL;

  nrom_ops.to_resume = NULL;

  nrom_ops.to_wait = NULL;

  nrom_ops.to_post_wait = NULL;

  nrom_ops.to_fetch_registers = NULL;

  nrom_ops.to_store_registers = NULL;

  nrom_ops.to_prepare_to_store = NULL;

  nrom_ops.to_xfer_memory = NULL;

  nrom_ops.to_files_info = NULL;

  nrom_ops.to_insert_breakpoint = NULL;

  nrom_ops.to_remove_breakpoint = NULL;

  nrom_ops.to_terminal_init = NULL;

  nrom_ops.to_terminal_inferior = NULL;

  nrom_ops.to_terminal_ours_for_output = NULL;

  nrom_ops.to_terminal_ours = NULL;

  nrom_ops.to_terminal_info = NULL;

  nrom_ops.to_kill = nrom_kill;

  nrom_ops.to_load = nrom_load;

  nrom_ops.to_lookup_symbol = NULL;

  nrom_ops.to_create_inferior = NULL;

  nrom_ops.to_post_startup_inferior = NULL;

  nrom_ops.to_acknowledge_created_inferior = NULL;

  nrom_ops.to_clone_and_follow_inferior = NULL;

  nrom_ops.to_post_follow_inferior_by_clone = NULL;

  nrom_ops.to_insert_fork_catchpoint = NULL;

  nrom_ops.to_remove_fork_catchpoint = NULL;

  nrom_ops.to_insert_vfork_catchpoint = NULL;

  nrom_ops.to_remove_vfork_catchpoint = NULL;

  nrom_ops.to_has_forked = NULL;

  nrom_ops.to_has_vforked = NULL;

  nrom_ops.to_can_follow_vfork_prior_to_exec = NULL;

  nrom_ops.to_post_follow_vfork = NULL;

  nrom_ops.to_insert_exec_catchpoint = NULL;

  nrom_ops.to_remove_exec_catchpoint = NULL;

  nrom_ops.to_has_execd = NULL;

  nrom_ops.to_reported_exec_events_per_exec_call = NULL;

  nrom_ops.to_has_exited = NULL;

  nrom_ops.to_mourn_inferior = nrom_mourn;

  nrom_ops.to_can_run = NULL;

  nrom_ops.to_notice_signals = 0;

  nrom_ops.to_thread_alive = 0;

  nrom_ops.to_stop = 0;

  nrom_ops.to_pid_to_exec_file = NULL;

  nrom_ops.to_stratum = download_stratum;

  nrom_ops.DONT_USE = NULL;

  nrom_ops.to_has_all_memory = 1;

  nrom_ops.to_has_memory = 1;

  nrom_ops.to_has_stack = 1;

  nrom_ops.to_has_registers = 1;

  nrom_ops.to_has_execution = 0;

  nrom_ops.to_sections = NULL;

  nrom_ops.to_sections_end = NULL;

  nrom_ops.to_magic = OPS_MAGIC;

}

void

_initialize_remote_nrom (void)

{

  init_nrom_ops ();

  add_target (&nrom_ops);

  add_show_from_set (

  add_set_cmd ("nrom_load_port", no_class, var_zinteger, (char *) &load_port,

               "Set the port to use for NetROM downloads\n", &setlist),

                      &showlist);

  add_show_from_set (

                      add_set_cmd ("nrom_control_port", no_class, var_zinteger, (char *) &control_port,

            "Set the port to use for NetROM debugger services\n", &setlist),

                      &showlist);

  add_cmd ("nrom", no_class, nrom_passthru,

           "Pass arguments as command to NetROM",

           &cmdlist);

}