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# Test Framework Driver for GDB driving a ROM monitor (via monitor.c).
#   Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2007, 2008, 2009, 2010
#   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 3 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, see <http://www.gnu.org/licenses/>.

load_lib gdb.exp
# puts "***** DID USE MONITOR ******"

#
# gdb_target_cmd
# Send gdb the "target" command
#
proc gdb_target_cmd { targetname serialport } {
    global gdb_prompt

    for {set i 1} {$i <= 3} {incr i} {
        send_gdb "target $targetname $serialport\n"
        gdb_expect 60 {
            -re "A program is being debugged already.*ill it.*y or n. $" {
                send_gdb "y\n";
                exp_continue;
            }
            -re "Couldn't establish connection to remote.*$gdb_prompt" {
                verbose "Connection failed";
            }
            -re "Remote MIPS debugging.*$gdb_prompt" {
                verbose "Set target to $targetname";
                return 0;
            }
            -re "Remote debugging using .*$serialport.*$gdb_prompt" {
                verbose "Set target to $targetname";
                return 0;
            }
            -re "Remote target $targetname connected to.*$gdb_prompt" {
                verbose "Set target to $targetname";
                return 0;
            }
            -re "Connected to.*$gdb_prompt" { 
                verbose "Set target to $targetname";
                return 0;
            }
            -re "Ending remote.*$gdb_prompt" { }
            -re "Connection refused.*$gdb_prompt" {
                verbose "Connection refused by remote target.  Pausing, and trying again."
                sleep 30
                continue
            }
            -re "Timeout reading from remote system.*$gdb_prompt" {
                verbose "Got timeout error from gdb.";
            }
            timeout {
                send_gdb "";
                break
            }
        }
    }
    return 1
}



#
# gdb_target_monitor
# Set gdb to target the monitor
#
proc gdb_target_monitor { exec_file } {
    global gdb_prompt
    global exit_status
    global timeout

    if [target_info exists gdb_protocol] {
        set targetname "[target_info gdb_protocol]"
    } else {
        perror "No protocol specified for [target_info name].";
        return -1;
    }
    if [target_info exists baud] {
        gdb_test "set remotebaud [target_info baud]" "" ""
    }
    if [target_info exists binarydownload] {
        gdb_test "set remotebinarydownload [target_info binarydownload]" "" ""
    }
    if { [ target_info exists disable_x_packet ] } {
        gdb_test "set remote X-packet disable" ""
    }
    if { [ target_info exists disable_z_packet ] } {
        gdb_test "set remote Z-packet disable" ""
    }
    if [target_info exists gdb_serial] {
       set serialport "[target_info gdb_serial]";
    } elseif [target_info exists netport] {
        set serialport "[target_info netport]"
    } else {
        set serialport "[target_info serial]"
    }

    for {set j 1} {$j <= 2} {incr j} {
        if [gdb_file_cmd $exec_file] { return -1; }

        if ![gdb_target_cmd $targetname $serialport] { return 0; }

        gdb_target_exec;

        if { $j == 1 && ![reboot_target] } {
            break;
        }
    }

    perror "Couldn't set target for $targetname, port is $serialport.";
    return -1;
}

proc gdb_target_exec { } {
    gdb_test "target exec" "No executable file now." "" ".*Kill it.*y or n.*" "y"
    
}
#
# 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 gdb_prompt
    global timeout
    global last_gdb_file;

    if { $arg == "" } {
        if [info exists last_gdb_file] {
            set arg $last_gdb_file;
        } else {
            send_gdb "info files\n";
            gdb_expect 30 {
                -re "Symbols from \"(\[^\"\]+)\"" {
                    set arg $expect_out(1,string);
                    exp_continue;
                }
                -re "Local exec file:\[\r\n\]+\[ \t\]*`(\[^'\]+)'," {
                    set arg $expect_out(1,string);
                    exp_continue;
                }
                -re "$gdb_prompt $" { }
            }
        }
    }

    set last_gdb_file $arg;

    for { set j 1; } { $j <= 2 } {incr j; } {
        if [target_info exists gdb,use_standard_load] {
            gdb_target_exec;
            if ![target_info exists gdb,no_push_conn] {
                remote_push_conn host;
            }
            set state [remote_ld target $arg];
            if ![target_info exists gdb,no_push_conn] {
                remote_close target;
                remote_pop_conn host;
            }
            if { $state == "pass" } {
                if [gdb_target_monitor $arg] { return -1; }
                gdb_test "list main" ".*" ""
                verbose "Loaded $arg into $GDB\n";
                return 0;
            }
        } else {

            if [gdb_target_monitor $arg] { return -1 }

            if [is_remote host] {
                # FIXME: Multiple downloads. bleah.
                set farg [remote_download host $arg];
            } else {
                set farg $arg;
            }

            if { $arg != "" && [target_info exists gdb_sect_offset] } {
                set textoff [target_info gdb_sect_offset];
                send_gdb "sect .text $textoff\n";
                gdb_expect 30 {
                    -re "(0x\[0-9a-z]+) - 0x\[0-9a-z\]+ is \\.data" {
                        set dataoff $expect_out(1,string);
                        exp_continue;
                    }
                    -re "(0x\[0-9a-z\]+) - 0x\[0-9a-z\]+ is \\.bss" {
                        set bssoff $expect_out(1,string);
                        exp_continue;
                    }
                    -re "$gdb_prompt" { }
                }
                set dataoff [format 0x%x [expr $dataoff + $textoff]];
                set bssoff [format 0x%x [expr $bssoff + $textoff]];
                send_gdb "sect .data $dataoff\n";
                gdb_expect 30 {
                    -re "$gdb_prompt" { }
                }
                send_gdb "sect .bss $bssoff\n";
                gdb_expect 30 {
                    -re "$gdb_prompt" { }
                }
            }

            verbose "Loading $farg"
            if [target_info exists gdb_load_offset] {
                set command "load $farg [target_info gdb_load_offset]\n";
            } else {
                set command "load $farg\n";
            }
            if [target_info exists gdb_load_timeout] {
                set loadtimeout [target_info gdb_load_timeout]
            } else {
                set loadtimeout 1600
            }

            send_gdb $command;
            gdb_expect $loadtimeout {
                -re "\[Ff\]ailed.*$gdb_prompt $" {
                    verbose "load failed";
                }
                -re "Timeout reading from remote.*$gdb_prompt" {
                }
                -re "$gdb_prompt $" {
                    verbose "Loaded $farg into $GDB\n"
                    return 0;
                }
                timeout {
                    if { $verbose > 1 } {
                        perror "Timed out trying to load $farg."
                    }
                }
            }
        }

        # Make sure we don't have an open connection to the target.
        gdb_target_exec;

        if { $j == 1 } {
            if { ![reboot_target] } {
                break;
            }
        }
    }
    perror "Couldn't load file into GDB.";
    return -1;
}