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#   Copyright (C) 1993, 1997, 1998 Free Software Foundation, Inc.

# 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.

# Please email any bugs, comments, and/or additions to this file to:

# DejaGnu@cygnus.com

# This file was written by Ian Lance Taylor .

# GDB support routines for a board using the MIPS remote debugging

# protocol.  These are actually pretty generic.

# DejaGnu currently assumes that debugging is being done over the main

# console port.  It would probably be more convenient for people using

# IDT boards to permit the debugging port and the connected port to be

# different, since an IDT board has two ports.  This would require

# extending some of the tests in a fashion similar to that done for

# VxWorks, because the test output would appear on the other port,

# rather than being displayed by gdb.

load_lib remote.exp

load_lib gdb.exp

set gdb_prompt "\\(gdb\\)"

#

# gdb_load -- load a file into the GDB.

#             Returns a 0 if there was an error,

#                       1 if it load successfully.

#

proc gdb_load { arg } {

    global verbose

    global loadpath

    global loadfile

    global gdb_prompt

    global GDB

    global expect_out

    set loadfile [file tail $arg]

    set loadpath [file dirname $arg]

    gdb_file_cmd $arg

    if [target_info exists gdb_protocol] {

        set protocol [target_info gdb_protocol];

    } else {

        set protocol "sparclite"

    }

    if [target_info exists serial] {

        set targetname [target_info serial];

        set command "target $protocol [target_info serial]\n";

    } else {

        if ![target_info exists netport] {

            perror "Need either netport or gdb_serial entry for [target_info name].";

            return -1;

        }

        set targetname [target_info netport];

        set command "target $protocol udp [target_info netport]\n";

    }

    set timeout 60

    verbose "Timeout is now $timeout seconds" 2

    set try_count 0;

    send_gdb $command;

    gdb_expect {

         -re "Unknown response.*resetting the board.|remote timeout" {

            incr try_count;

            if { $try_count > 3 } {

                set try_count 0;

                reboot_target;

                sleep 5;

            }

            sleep 1;

            send_gdb $command;

            exp_continue;

        }

         -re "Remote target.*$gdb_prompt $" { }

         -re ".*SPARClite appears to be alive.*$gdb_prompt $"   {

            if $verbose>1 then {

                send_user "Set target to $targetname\n"

            }

        }

         timeout {

            perror "Couldn't set SLITE target."

            set timeout 10

            verbose "Timeout is now $timeout seconds" 2

            return -1

        }

    }

    if [target_info exists gdb_load_offset] {

        set offset "[target_info gdb_load_offset]";

    } else {

        set offset "";

    }

    if { 1 } {

        if [is_remote host] {

            set arg [remote_download host $arg];

            if { $arg == "" } {

                error "download failed"

                return -1;

            }

        }

        send_gdb "load $arg $offset\n"

        verbose "Loading $arg into $GDB" 2

        set timeout 2400

        verbose "Timeout is now $timeout seconds" 2

        gdb_expect {

             -re "Loading.*$gdb_prompt $" {

                verbose "Loaded $arg into $GDB" 1

                set timeout 30

                verbose "Timeout is now $timeout seconds" 2

            }

             -re "$gdb_prompt $"     {

                if $verbose>1 then {

                    perror "GDB couldn't load."

                }

            }

             timeout {

                if $verbose>1 then {

                    perror "Timed out trying to load $arg."

                }

            }

        }

    }

    # Some SPARClite boards automagically do a run after the program is

    # loaded.

    if [target_info exists need_monitor_run] {

        set timeout 10

        verbose "Timeout is now $timeout seconds, doing monitor run" 2

        send_gdb "monitor run\n";

        sleep 2;

        send_gdb "";

        gdb_expect {

             -re ".*$gdb_prompt $" { verbose "Run command succeded" }

             default {

                perror "error sending monitor run command";

            }

        }

    } else {

        sleep 2;

    }

    if [target_info exists gdb_serial] {

        set serial [target_info gdb_serial];

    } else {

        set serial [target_info serial];

    }

    send_gdb "target remote $serial\n"

    set timeout 60

    verbose "Timeout is now $timeout seconds" 2

    gdb_expect {

         -re ".*Kill it?.*y or n.*" {

            send_gdb "y\n";

            exp_continue

        }

         -re ".*$gdb_prompt $"  {

            verbose "Set remote target to [target_info serial]" 2

        }

         timeout {

            perror "Couldn't set remote target."

            set timeout 10

            verbose "Timeout is now $timeout seconds" 2

            return -1

        }

    }

    if [info exists expect_out(buffer)] then {

        send_log $expect_out(buffer)

    }

    return 0

}