# Test Framework Driver for GDB driving a builtin simulator
#   Copyright 1994 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.  */

load_lib gdb.exp

#
# gdb_version -- extract and print the version number of gdb
#
proc gdb_version {} {
    default_gdb_version
}

# The SH simulator by default will allocate 16M of memory, which is
# convenient, but it slows down testing to chew up that much swap;
# so supply an option that makes the simulator allocate 256K.

set target_sim_options ""

if [istarget "sh*-*-*"] then {
    set target_sim_options "18"
}

#
# gdb_target_sim
# Set gdb to target the simulator
#
proc gdb_target_sim { } {
    global targetname
    global prompt
    global verbose
    global exit_status
    global target_sim_options

    # force the height to "unlimited", so no pagers get used
    send "set height 0\n"
    expect -re ".*$prompt $" {}
    # force the width to "unlimited", so no wraparound occurs
    send "set width 0\n"
    expect -re ".*$prompt $" {}

    send "target sim $target_sim_options\n"
    set timeout 60
    verbose "Timeout is now $timeout seconds" 2
    expect {
	-re "Connected to the simulator.*$prompt $"	{
	    verbose "Set target to sim"
	}
	timeout { 
	    perror "Couldn't set target for simulator."
	    cleanup
	    exit $exit_status
	}
    }
    set timeout 10
    verbose "Timeout is now $timeout seconds" 2
}

#
# gdb_load -- load a file into the debugger.
#             return a -1 if anything goes wrong.
#
proc gdb_load { arg } {
    global verbose
    global loadpath
    global loadfile
    global GDB
    global prompt

    if [gdb_file_cmd $arg] then { return -1 }

    gdb_target_sim

    send "load\n"
    set timeout 2400
    verbose "Timeout is now $timeout seconds" 2
    expect {
	-re ".*$prompt $" {
	    if $verbose>1 then {
		send_user "Loaded $arg into $GDB\n"
	    }
	    set timeout 30
	    verbose "Timeout is now $timeout seconds" 2
	    return 1
	}
	-re "$prompt $"     {
	    if $verbose>1 then {
		perror "GDB couldn't load."
	    }
	}
	timeout {
	    if $verbose>1 then {
		perror "Timed out trying to load $arg."
	    }
	}
    }
}

#
# gdb_start -- start GDB running.
#
proc gdb_start { } {
    default_gdb_start
    verbose "Setting up target, Please wait..."
    gdb_target_sim
}

#
# gdb_exit -- exit gdb
#
proc gdb_exit { } {
    catch default_gdb_exit
}

gdb_start

# make sure gdb has actually started, otherwise if the first test
# timesout, DejaGnu crashes
send "\n"
expect {
    -re "$prompt"
    }