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# Test Framework Driver for GDB using the extended gdb remote protocol

#   Copyright 1995, 1997 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.

#

# For this to function correctly, you need to set a number of variables

# in your gdb/site.exp file

#

#       set noargs 1            -- we can't pass arguments (yet)

#       set noinferiorio 1      -- we can't get io to/from the inferior

#       set targethost  -- name of the remote system (runs gdbserver)

#       set debughost   -- name of the system running gdb

#       set port        -- starting port number for communication

#       set gdbserver   -- path (on the remote side) to find

#                                  gdbserver

#       set rsh                 -- path (on debughost side) to rsh

#       set rcp                 -- path (on debughost side) to rcp

#

# You will need to be able to spawn processes from gdbhost to run on

# targethost via rsh (this is how we start gdbserver); similarly

# you need to be able to rcp files from gdbhost to targethost.

#

# We don't do much error checking, if something goes wrong, you'll probably

# just get a tcl error and everything will die.  FIXME

#

# Load the basic gdb testing library

load_lib gdb.exp

load_lib monitor.exp

#

# gdb_load -- load a file into the debugger.

#             return a -1 if anything goes wrong.

#

# Loading a file in the gdbsrever framework is a little strange in that

# we also create the inferior (which is stopped at the first instruction

# in the program when we get control).

#

proc gdb_load { arg } {

    global verbose

    global loadpath

    global loadfile

    global GDB

    global gdb_prompt

    global debughost

    global port

    # bump the port number to avoid conflicts with hung ports

    set targethost [target_info gdb_server_host];

    set debughost [target_info gdb_debug_host];

    if [target_info exists gdb_server_prog] {

        set gdbserver [target_info gdb_server_prog];

    } else {

        set gdbserver "gdbserver";

    }

    incr port

    set serialport $targethost:$port

    # Copy the file down to the remote host.

    set file [remote_download host $arg];

    # now start gdbserver on the remote side

    remote_spawn host "$gdbserver $debughost:$port $file >& /dev/null < /dev/null"

    # give it plenty of time to get going (lynx)

    sleep 30

    # tell gdb we are remote debugging

    if [gdb_target_monitor $arg] {

        return -1;

    }

    return 1

}

#

# gdb_start -- start GDB running.

#

proc gdb_start { } {

    global gdb_prompt

    # do the usual stuff

    catch default_gdb_start

    # FIXME: This shouldn't be necessary, but lots of PA tests fail

    # without it.

    send "set remotecache 0\n"

    expect {

        -re "set remotecache 0\[\r\n\]+.*$gdb_prompt $" {}

        default { fail "gdb_start"}

    }

}