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[/] [or1k/] [trunk/] [insight/] [gdb/] [gdbtcl/] [targetselection.itb] - Rev 1774

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# Target selection dialog for GDBtk.
# Copyright 1997, 1998, 1999 Cygnus Solutions
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License (GPL) 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.


# ----------------------------------------------------------------------
# Implements GDB TargetSelection dialog
# ----------------------------------------------------------------------

# ------------------------------------------------------------------
#  CONSTRUCTOR - create new target selection window
# ------------------------------------------------------------------
body TargetSelection::constructor {args} {
  eval itk_initialize $args
  set top [winfo toplevel $itk_interior]
  _init
  build_win
}

body TargetSelection::getname {target name} {

  # Init target database if we haven't already done so
  init_target_db

  if {[info exists gdb_target($target,$name)]} {
    return $gdb_target($target,$name)
  } else {
    return ""
  }
}

body TargetSelection::init_target_db {} {
  # check to see if we already initialized this database
  if {$db_inited} { 
    return 
  }
  set db_inited 1

  # Target Database
  # Set the following members:
  # TARGET,pretty-name: Name to display to user
  # TARGET,debaud: Default baudrate
  # TARGET,baud-rates: Permissible baudrates
  # TARGET,cmd: Abstracted command to run for this target (tcpX and com1 are
  #          replaced with the real port and host/port in set_target)
  # TARGET,runlist: List of preferences for the target: {attach download run cont}
  # TARGET,after_attaching: a command to run after attaching to the target

  # Default target
  set gdb_target(default,pretty-name) "Default"
  set gdb_target(default,defbaud) ""
  set gdb_target(default,baud-rates) {}
  set gdb_target(default,cmd) ""
  set gdb_target(default,runlist) {0 0 1 0}
  set gdb_target(default,options) ""
  set gdb_target(default,after_attaching) {}

  # Exec target
  set gdb_target(exec,pretty-name) "Exec"
  set gdb_target(exec,defbaud) ""
  set gdb_target(exec,baud-rates) {}
  set gdb_target(exec,cmd) ""
  set gdb_target(exec,runlist) {0 0 1 0}
  set gdb_target(exec,options) ""
  set gdb_target(exec,after_attaching) {}

  # ADS board w/SDS protocol
  set gdb_target(sds,pretty-name) "SDS"
  set gdb_target(sds,defbaud) "38400"
  set gdb_target(sds,baud-rates) {9600 38400}
  set gdb_target(sds,cmd) "sds com1"
  set gdb_target(sds,runlist) {1 1 0 1}
  set gdb_target(sds,after_attaching) {}

  # Simulator
  set gdb_target(sim,pretty-name) "Simulator"
  set gdb_target(sim,defbaud) ""
  set gdb_target(sim,baud-rates) {}
  set gdb_target(sim,cmd) "sim"
  set gdb_target(sim,runlist) {1 1 1 0}
  set gdb_target(sim,options) ""
  set gdb_target(sim,after_attaching) {}

  # Remote
  set gdb_target(remote,pretty-name) "Remote/Serial"
  set gdb_target(remote,defbaud) "9600"
  set gdb_target(remote,baud-rates) {9600 19200 38400 57600 115200}
  set gdb_target(remote,cmd) "remote com1"
  set gdb_target(remote,runlist) {1 1 0 1}
  set gdb_target(remote,after_attaching) {}
  set gdb_target(remotetcp,pretty-name) "Remote/TCP"
  set gdb_target(remotetcp,defbaud) "TCP"
  set gdb_target(remotetcp,baud-rates) {}
  set gdb_target(remotetcp,cmd) "remote tcpX"
  set gdb_target(remotetcp,runlist) {1 1 0 1}
  set gdb_target(remotetcp,after_attaching) {}

  # ARM Angel
  set gdb_target(rdi,pretty-name) "ARM Angel/Serial"
  set gdb_target(rdi,defbaud) "9600"
  set gdb_target(rdi,baud-rates) {9600 19200 38400 57600 115200}
  set gdb_target(rdi,cmd) "rdi com1"
  set gdb_target(rdi,runlist) {1 1 0 1}
  set gdb_target(rdi,after_attaching) {}

  # ARM Angel/Ethernet
  set gdb_target(rditcp,pretty-name) "ARM Angel/Ethernet"
  set gdb_target(rditcp,defbaud) "ETH"
  set gdb_target(rditcp,baud-rates) {}
  set gdb_target(rditcp,cmd) "rdi ethX"
  set gdb_target(rditcp,runlist) {1 1 0 1}
  set gdb_target(rditcp,after_attaching) {}

  # ARM Remote
  set gdb_target(rdp,pretty-name) "ARM Remote/Serial"
  set gdb_target(rdp,defbaud) "9600"
  set gdb_target(rdp,baud-rates) {9600}
  set gdb_target(rdp,cmd) "rdp com1"
  set gdb_target(rdp,runlist) {1 1 0 1}
  set gdb_target(rdp,after_attaching) {}
  set gdb_target(rdptcp,pretty-name) "ARM Remote/TCP"
  set gdb_target(rdptcp,defbaud) "TCP"
  set gdb_target(rdptcp,baud-rates) {}
  set gdb_target(rdptcp,cmd) "rdp tcpX"
  set gdb_target(rdptcp,runlist) {1 1 0 1}
  set gdb_target(rdptcp,after_attaching) {}

  # m32r rev C
  set gdb_target(m32r,pretty-name) "M32R/Serial"
  set gdb_target(m32r,defbaud) "9600"
  set gdb_target(m32r,baud-rates) {9600}
  set gdb_target(m32r,cmd) "m32r com1"
  set gdb_target(m32r,runlist) {1 1 0 1}
  set gdb_target(m32r,after_attaching) {}
  set gdb_target(m32rtcp,pretty-name) "M32R/TCP"
  set gdb_target(m32rtcp,defbaud) "TCP"
  set gdb_target(m32rtcp,baud-rates) {}
  set gdb_target(m32rtcp,cmd) "m32r tcpX"
  set gdb_target(m32rtcp,runlist) {1 1 0 1}
  set gdb_target(m32rtcp,after_attaching) {}

  # m32r msa2000
  set gdb_target(mon2000,pretty-name) "MON2000/Serial"
  set gdb_target(mon2000,defbaud) "9600"
  set gdb_target(mon2000,baud-rates) {9600}
  set gdb_target(mon2000,cmd) "mon2000 com1"
  set gdb_target(mon2000,runlist) {1 1 0 1}
  set gdb_target(mon2000,after_attaching) {}
  set gdb_target(mon2000tcp,pretty-name) "MON2000/TCP"
  set gdb_target(mon2000tcp,defbaud) "TCP"
  set gdb_target(mon2000tcp,baud-rates) {}
  set gdb_target(mon2000tcp,cmd) "mon2000 tcpX"
  set gdb_target(mon2000tcp,runlist) {1 1 0 1}
  set gdb_target(mon2000tcp,after_attaching) {}

  # sparclite
  set gdb_target(sparclite,pretty-name) "SPARClite/Serial"
  set gdb_target(sparclite,defbaud) "9600"
  set gdb_target(sparclite,baud-rates) {9600}
  set gdb_target(sparclite,cmd) "sparclite com1"
  set gdb_target(sparclite,runlist) {1 1 0 1}
  set gdb_target(sparclite,after_attaching) {}
  set gdb_target(sparclitetcp,pretty-name) "SPARClite/TCP"
  set gdb_target(sparclitetcp,defbaud) "TCP"
  set gdb_target(sparclitetcp,baud-rates) {}
  set gdb_target(sparclitetcp,cmd) "sparclite tcpX"
  set gdb_target(sparclitetcp,runlist) {1 1 0 1}
  set gdb_target(sparclitetcp,after_attaching) {}

  # V850 ICE
  set gdb_target(ice,pretty-name) "V850 ICE"
  set gdb_target(ice,defbaud) ""
  set gdb_target(ice,baud-rates) {}
  set gdb_target(ice,cmd) "ice"
  set gdb_target(ice,runlist) {1 1 0 1}
  set gdb_target(ice,after_attaching) {}

  # MIPS
  set gdb_target(mips,pretty-name) "MIPS/Serial"
  set gdb_target(mips,defbaud) "9600"
  set gdb_target(mips,baud-rates) {9600}
  set gdb_target(mips,cmd) "mips com1"
  set gdb_target(mips,runlist) {1 1 0 1}
  set gdb_target(mips,after_attaching) {}
  set gdb_target(mipstcp,pretty-name) "MIPS/TCP"
  set gdb_target(mipstcp,defbaud) "TCP"
  set gdb_target(mipstcp,baud-rates) {}
  set gdb_target(mipstcp,cmd) "mips tcpX"
  set gdb_target(mipstcp,runlist) {1 1 0 1}
  set gdb_target(mipstcp,after_attaching) {}

  # Picobug
  set gdb_target(picobug,pretty-name) "Picobug/Serial"
  set gdb_target(picobug,defbaud) "19200"
  set gdb_target(picobug,baud-rates) {19200}
  set gdb_target(picobug,cmd) "picobug com1"
  set gdb_target(picobug,runlist) {1 1 0 1}
  set gdb_target(picobug,after_attaching) {}
  set gdb_target(picobugtcp,pretty-name) "Picobug/TCP"
  set gdb_target(picobugtcp,defbaud) "TCP"
  set gdb_target(picobugtcp,baud-rates) {}
  set gdb_target(picobugtcp,cmd) "picobug tcpX"
  set gdb_target(picobugtcp,runlist) {1 1 0 1}
  set gdb_target(picobugtcp,after_attaching) {}

  # Cisco.
  set gdb_target(cisco,pretty-name) "Cisco/Serial"
  set gdb_target(cisco,defbaud) "38400"
  set gdb_target(cisco,baud-rates) {9600 19200 38400 56000}
  set gdb_target(cisco,cmd) "cisco com1"
  set gdb_target(cisco,runlist) {1 0 0 0}
  set gdb_target(cisco,after_attaching) "set os cisco"
  set gdb_target(ciscotcp,pretty-name) "Cisco/TCP"
  set gdb_target(ciscotcp,defbaud) "TCP"
  set gdb_target(ciscotcp,baud-rates) {}
  set gdb_target(ciscotcp,cmd) "cisco tcpX"
  set gdb_target(ciscotcp,runlist) {1 0 0 0}
  set gdb_target(ciscotcp,after_attaching) "set os cisco"
}

body TargetSelection::default_port {} {
  global tcl_platform
  switch -regexp $tcl_platform(os) {
    Windows { set port com1 }
    Linux   { set port /dev/ttyS0 }
    SunOS   { set port /dev/ttya }
    AIX     { set port /dev/foo1 }
    ULTRIX  { set port /dev/foo1 }
    IRIX    { set port /dev/foo1 }
    OSF1    { set port /dev/foo1 }
    NetBSD  { set port /dev/foo1 }
    HP-UX   { 
      # Special case...
      switch -regexp $tcl_platform(osVersion) {
        A.09 { set port /dev/tty00 }
        B.10 { set port /dev/tty0p0 }
      }
    }
    default { set port /dev/ttya }
  }
  
  return $port
}


body TargetSelection::_init_prefs {} {

  if {$prefs_inited} {
    return
  }
  set prefs_inited 1

  # these are not target-specific

  pref define gdb/load/main 1
  pref define gdb/load/exit 1
  pref define gdb/load/check 0

  # these are target-specific
  # set up the defaults
  pref define gdb/load/default-verbose 0
  pref define gdb/load/default-port [default_port]
  pref define gdb/load/default-hostname ""
  pref define gdb/load/default-after_attaching {}
}

body TargetSelection::_init_target {} {
  global gdb_target_name
  set target_list [get_target_list]
  set target $gdb_target_name

  # target = CANCEL should never come into here.  If the target was
  # returned as CANCEL, it should be fixed by the caller...  But it
  # should not be harmful if it gets in here.

  if {$target == "" || [string compare $target CANCEL] == 0} {
    set target default
  }
    
  set defbaud $gdb_target($target,defbaud)
  pref define gdb/load/$target-baud $defbaud
  pref define gdb/load/$target-port [pref get gdb/load/default-port]
  pref define gdb/load/$target-verbose [pref get gdb/load/default-verbose]
  pref define gdb/load/$target-portname 1000
  pref define gdb/load/$target-hostname [pref get gdb/load/default-hostname]
  
  set err [catch {pref get gdb/load/$target-runlist} run_list]
  if {$err} {
    set run_list $gdb_target($target,runlist)
    pref setd gdb/load/$target-runlist $run_list
  }
  pref set gdb/src/run_attach [lindex $run_list 0]
  pref set gdb/src/run_load   [lindex $run_list 1]
  pref set gdb/src/run_run    [lindex $run_list 2]
  pref set gdb/src/run_cont   [lindex $run_list 3]
  
  set err [catch {pref get gdb/load/$target-after_attaching} aa]
  if {$err} {
    set aa $gdb_target($target,after_attaching)
    pref setd gdb/load/$target-after_attaching $aa
  }
}

body TargetSelection::_init {} {

  if {!$trace_inited} {
    # Trace all gdb_loaded changes based on target
    trace variable gdb_loaded w [code TargetSelection::target_trace]
  }
  set trace_inited 1

  init_target_db        ;# initialize database
  _init_prefs   ;# initialize load prefs 
  _init_target  ;# initialize target prefs
  set_saved

  # This tells us that the target system is inited.  Some of these
  # init functions need to be called every time the target dialog is
  # posted, some only once.  The latter functions can check inited to
  # see what they should do.

}

# ------------------------------------------------------------------
#  METHOD:  build_win - build the dialog
# ------------------------------------------------------------------
body TargetSelection::build_win {} {
  global tcl_platform PREFS_state gdb_ImageDir gdb_target_name

  set f [frame $itk_interior.f]
  set opts [frame $itk_interior.moreoptions]
  frame $itk_interior.moreoptionsframe
  set btns [frame $itk_interior.buttons]

  #labelled frame "Connection"
  iwidgets::Labeledframe $f.lab -labelpos nw -labeltext [gettext "Connection"]
  set fr [$f.lab childsite]

  # target name
  label $fr.tarl -text [gettext "Target:"]
  combobox::combobox $fr.tar -editable 0 -command [code $this change_target] \
    -width $Width -maxheight 10

  # baud rate combobox
  label $fr.cbl -text [gettext "Baud Rate:"]
  combobox::combobox $fr.cb -editable 0 -command [code $this change_baud] \
    -textvariable [pref varname gdb/load/$target-baud] -width $Width \
    -maxheight 10

  if {[catch {gdb_cmd "show remotebaud"} res]} {
    set baud [pref get gdb/load/$target-baud]
  } else {
    set baud [lindex $res end]
    set baud [string trimright $baud "."]
    # When uninitialized, GDB returns a baud rate of 2^32
    # Detect this and ignore it.
    if {$baud > 4000000000} {
      set baud [pref get gdb/load/$target-baud]
    } else {
      pref setd gdb/load/$target-baud $baud
    }
  }

  # host entry widget
  entry $fr.host -textvariable [pref varname gdb/load/$target-hostname] \
    -width $Width

  # port combobox
  if {$tcl_platform(platform) == "windows"} {
    set editable 0
  } else {
    set editable 1
  }

  label $fr.portl -text [gettext "Port:"]
  combobox::combobox $fr.port -editable $editable \
    -textvariable [pref varname gdb/load/$target-port] \
    -width $Width -maxheight 10

  # load baud rates into combobox
  fill_rates

  # load port combobox
  if {$tcl_platform(platform) == "windows"} {
    foreach val [port_list] {
      $fr.port list insert end $val
    }
  } else {
    # fixme:  how do I find valid values for these????
    switch $tcl_platform(os) {
      Linux { set ports [list /dev/cua0 /dev/ttyS0 /dev/ttyS1 /dev/ttyS2 /dev/ttyS3]}
      SunOS { set ports [list /dev/ttya /dev/ttyb] }
      AIX   { set ports [list /dev/foo1 /dev/foo2] }
      ULTRIX { set ports [list /dev/foo1 /dev/foo2] }
      IRIX   { set ports [list /dev/foo1 /dev/foo2] }
      OSF1   { set ports [list /dev/foo1 /dev/foo2] }
      NetBSD { set ports [list /dev/foo1 /dev/foo2] }
      HP-UX  { 
        # Special case...
        switch -regexp $tcl_platform(osVersion) {
          A.09 { set ports [list /dev/tty00 /dev/tty01] }
          B.10 { set ports [list /dev/tty0p0 /dev/tty1p0] }
        }
      }
      default { set ports [list UNKNOWN UNKNOWN] }
    }
    foreach val $ports {
      $fr.port list insert end $val
    }
  }

  # Port entry widget
  entry $fr.porte -textvariable [pref varname gdb/load/$target-port] -width $Width

  frame $f.fr
  checkbutton $f.fr.main -text [gettext "Set breakpoint at 'main'"] \
    -variable [pref varname gdb/load/main]
  checkbutton $f.fr.exit -text [gettext "Set breakpoint at 'exit'"] \
    -variable [pref varname gdb/load/exit]
  frame $f.fr.bp
  checkbutton $f.fr.bp.at_func -text [gettext "Set breakpoint at"] \
    -variable [pref varname gdb/load/bp_at_func]
  entry $f.fr.bp.func -textvariable [pref varname gdb/load/bp_func] -width 20
  checkbutton $f.fr.verb -text [gettext "Display Download Dialog"] \
    -variable [pref varname gdb/load/$target-verbose]
  checkbutton $f.fr.xterm -text [gettext "Use xterm as inferior's tty"] \
    -variable [pref varname gdb/process/xtermtty] \
    -onvalue yes -offvalue no

  if {![pref get gdb/control_target]} {
    $f.fr.main configure -state disabled
    $f.fr.exit configure -state disabled
    $f.fr.verb configure -state disabled
    $f.fr.bp.at_func configure -state disabled
    $f.fr.bp.func configure -state disabled
    checkbutton $f.fr.check -text [gettext "Compare to remote executable"] \
      -variable [pref varname gdb/load/check]
    if { $gdb_target_name == "exec" } {
      $f.fr.check configure -state disabled
    }
  }

  grid $fr.tarl $fr.tar -sticky w -padx 5 -pady 5
  grid $fr.cbl $fr.cb -sticky w -padx 5 -pady 5
  grid $fr.portl $fr.port -sticky w -padx 5 -pady 5
  set mapped1 $fr.cb
  set mapped2 $fr.port

  grid $f.fr.main -sticky w -padx 5 -pady 5
  grid $f.fr.exit -sticky w -padx 5 -pady 5
  pack $f.fr.bp.at_func $f.fr.bp.func -side left
  grid $f.fr.bp -sticky w -padx 5 -pady 5
  grid $f.fr.verb -sticky w -padx 5 -pady 5
  grid $f.fr.xterm -sticky w -padx 5 -pady 5
  if {![pref get gdb/control_target]} {
    grid $f.fr.check -sticky w -padx 5 -pady 5
  }

  grid $f.lab $f.fr -sticky w -padx 5 -pady 5

  # Create the "More Options" thingy
  if {[lsearch [image names] _MORE_] == -1} {
    image create photo _MORE_ -file [file join $gdb_ImageDir more.gif]
    image create photo _LESS_ -file [file join $gdb_ImageDir less.gif]
  }

  set MoreButton [button $opts.button -image _MORE_ \
                    -relief flat -command [code $this toggle_more_options]]
  set MoreLabel [label $opts.lbl -text {More Options}]
  frame $opts.frame -relief raised -bd 1
  pack $opts.button $opts.lbl -side left
  place $opts.frame -relx 1 -x -10 -rely 0.5 -relwidth 0.73 -height 2 -anchor e

  # Create the (hidden) more options frame
  set MoreFrame [iwidgets::Labeledframe $itk_interior.moreoptionsframe.frame \
                   -labelpos nw -labeltext {Run Options}]
  set frame [$MoreFrame childsite]

  set var [pref varname gdb/src/run_attach]
  checkbutton $frame.attach -text {Attach to Target} -variable $var

  set var [pref varname gdb/src/run_load]
  checkbutton $frame.load -text {Download Program} -variable $var

  set rm_frame [iwidgets::labeledframe $frame.run_method -labelpos nw -labeltext "Run Method" ]
  set RunMethod [ $rm_frame childsite ]

  set rm_label [label $frame.label -text "Run Method:"]
  set var [pref varname gdb/src/run_cont]
  radiobutton $RunMethod.cont -text {Continue from Last Stop} -value 1 -variable $var \
    -command [code $this set_run run]
  
  set var [pref varname gdb/src/run_run]
  radiobutton $RunMethod.run -text {Run Program} -value 1 -variable $var \
    -command [code $this set_run cont]

  # The after attaching command entry
  set _after_entry [entry $frame.aftere]
  label $frame.afterl -text {Command to issue after attaching:}

  grid $frame.label -column 1 -row 0 -sticky w
  grid $frame.attach -column 0 -row 1 -ipady 2
  grid $frame.load -column 0 -row 2 -ipady 2

  grid $RunMethod.run -column 0 -row 1 -sticky w -ipady 2
  grid $RunMethod.cont -column 0 -row 2 -sticky w -ipady 2
  
  grid $rm_frame -column 1 -row 1 -rowspan 2 -sticky nsew -ipady 2

  grid $frame.afterl -row 4 -sticky we -columnspan 2 -ipady 2
  grid $frame.aftere -sticky we -columnspan 2 -ipady 2
  grid columnconfigure $frame 0 -weight 1
  grid columnconfigure $frame 1 -weight 1

  # Map everything onto the screen
  # This looks like a possible packing bug -- our topmost frame
  # will not resize itself. So, instead, use the topmost frame.
  #pack $f $opts $itk_interior.moreoptionsframe -side top -fill x
  pack $MoreFrame -fill x -expand yes
  pack $f $opts -side top -fill x

  change_target $gdb_target($target,pretty-name)

  button $btns.ok -text [gettext OK] -width 7 -command [code $this save] \
    -default active
  button $btns.cancel -text [gettext Cancel] -width 7 \
    -command [code $this cancel]
  button $btns.help -text [gettext Help] -width 7 -command [code $this help] \
    -state disabled
  standard_button_box $btns
  bind $btns.ok <Return> "$btns.ok flash; $btns.ok invoke"
  bind $btns.cancel <Return> "$btns.cancel flash; $btns.cancel invoke"
  bind $btns.help <Return> "$btns.help flash; $btns.help invoke"

  pack $btns -side bottom -anchor e
  focus $btns.ok
  
  # set up balloon help
  balloon register $f.fr.bp.at_func "Set User-Speficied Breakpoints at Run Time"
  balloon register $f.fr.bp.func "Enter a List of Functions for Breakpoints"

  window_name "Target Selection"

  if {[valid_target $target]} {
    $fr.tar configure -value $gdb_target($target,pretty-name)
  }
  fill_targets


}

# ------------------------------------------------------------------
#  METHOD:  set_saved - set saved values
# ------------------------------------------------------------------
body TargetSelection::set_saved {} {
  set saved_baud [pref get gdb/load/$target-baud]
  set saved_port [pref get gdb/load/$target-port]
  set saved_main [pref get gdb/load/main]
  set saved_exit [pref get gdb/load/exit]
  set saved_check [pref get gdb/load/check]
  set saved_verb [pref get gdb/load/$target-verbose]
  set saved_portname [pref get gdb/load/$target-portname]
  set saved_hostname [pref get gdb/load/$target-hostname]
  set saved_attach [pref get gdb/src/run_attach]
  set saved_load   [pref get gdb/src/run_load]
  set saved_run    [pref get gdb/src/run_run]
  set saved_cont   [pref get gdb/src/run_cont]
  if {[info exists gdb_target($target,options)]} {
    if {[catch {pref get gdb/load/$target-opts} saved_options]} {
      set saved_options ""
    }
  }
}

# ------------------------------------------------------------------
#  METHOD:  write_saved - write saved values to preferences
# ------------------------------------------------------------------
body TargetSelection::write_saved {} {
  pref setd gdb/load/$target-baud $saved_baud
  pref setd gdb/load/$target-port $saved_port
  pref setd gdb/load/main $saved_main
  pref setd gdb/load/exit $saved_exit
  pref setd gdb/load/check $saved_check
  pref setd gdb/load/$target-verbose $saved_verb
  pref setd gdb/load/$target-portname $saved_portname
  pref setd gdb/load/$target-hostname $saved_hostname
  pref setd gdb/load/$target-runlist [list $saved_attach $saved_load $saved_run $saved_cont]
  if {[info exists gdb_target($target,options)]} {
    pref setd gdb/load/$target-opts $saved_options
  }
  if {[catch {$_after_entry get} saved_after_attaching]} {
    set saved_after_attaching ""
  }
  pref setd gdb/load/$target-after_attaching $saved_after_attaching
}

# ------------------------------------------------------------------
#  METHOD:  fill_rates - fill baud rate combobox
# ------------------------------------------------------------------
body TargetSelection::fill_rates {} {
  $fr.cb list delete 0 end

  if {$gdb_target($target,baud-rates) != ""} {
    foreach val $gdb_target($target,baud-rates) {
      $fr.cb list insert end $val
    }
  }
}

# ------------------------------------------------------------------
#  METHOD:  fill_targets - fill target combobox
# ------------------------------------------------------------------
body TargetSelection::fill_targets {} {
  #[$fr.tar subwidget listbox] delete 0 end
  $fr.tar list delete 0 end

  foreach val $target_list {
    if {[info exists gdb_target($val,pretty-name)]} {
      $fr.tar list insert end $gdb_target($val,pretty-name)

      # Insert TCP target, if it exists
      if {[info exists gdb_target(${val}tcp,pretty-name)]} {
        $fr.tar list insert end $gdb_target(${val}tcp,pretty-name)
      }
    }
  }
}

# ------------------------------------------------------------------
#  METHOD:  config_dialog - Convenience method to map/unmap/rename
#            components onto the screen based on target T.
# ------------------------------------------------------------------
body TargetSelection::config_dialog {t} {
  pref define gdb/load/$t-verbose [pref get gdb/load/verbose]
  $f.fr.verb config -variable [pref varname gdb/load/$t-verbose]
  # Map the correct entries and comboboxes onto the screen
  if {$gdb_target($t,defbaud) == "TCP"} {
    # we have a tcp target
    # map host and porte
    if {$mapped1 != "$fr.host"} {
      grid forget $mapped1
      set mapped1 $fr.host
      grid $mapped1 -row 1 -column 1 -sticky w -padx 5 -pady 5
    }
    $fr.cbl configure -text "Hostname:"
    $fr.host config -textvariable [pref varname gdb/load/$t-hostname]

    if {$mapped2 != "$fr.porte"} {
      grid forget $mapped2
      set mapped2 $fr.porte
      grid $mapped2 -row 2 -column 1 -sticky w -padx 5 -pady 5
    }
    $fr.portl configure -text {Port:}
    $fr.porte config -textvariable [pref varname gdb/load/$t-portname] -fg black

    $mapped1 configure -state normal
    $mapped2 configure -state normal
  } elseif {$gdb_target($t,defbaud) == "ETH"} {
    # we have a udp target
    # map host and porte
    if {$mapped1 != "$fr.host"} {
      grid forget $mapped1
      set mapped1 $fr.host
      grid $mapped1 -row 1 -column 1 -sticky w -padx 5 -pady 5
    }
    $fr.cbl configure -text "Hostname:"
    $fr.host config -textvariable [pref varname gdb/load/$t-hostname]

    if {$mapped2 != "$fr.porte"} {
      grid forget $mapped2
    }
    $fr.portl configure -text {Port: N/A (fixed)}

    $mapped1 configure -state normal
    $mapped2 configure -state disabled
  } elseif {$gdb_target($t,defbaud) != ""} {
    # we have a serial target
    # map port and cb
    if {$mapped1 != "$fr.cb"} {
      grid forget $mapped1
      set mapped1 $fr.cb
      grid $mapped1 -row 1 -column 1 -sticky w -padx 5 -pady 5
    }
    $fr.cbl configure -text "Baud Rate:"
    $fr.cb configure -textvariable [pref varname gdb/load/$t-baud]
    
    if {$mapped2 != "$fr.port"} {
      grid forget $mapped2
      set mapped2 $fr.port
      grid $mapped2 -row 2 -column 1 -sticky w -padx 5 -pady 5
    }
    $fr.portl configure -text {Port:}
    $fr.port configure -textvariable [pref varname gdb/load/$t-port]

    $mapped1 configure -state normal
    $mapped2 configure -state normal
  } else {
    # we have a non-remote(-like) target
    # disable all (except tar) and check for
    # options
    $mapped1 configure -state disabled
    $mapped2 configure -state disabled
    $fr.porte configure -fg gray

    if {[info exists gdb_target($t,options)]} {
      if {$mapped1 != "$fr.host"} {
        grid forget $mapped1
        set mapped1 $fr.host
        grid $mapped1 -row 1 -column 1 -sticky w -padx 5 -pady 5
      }
      $mapped1 configure -state normal
      $fr.host config -textvariable [pref varname gdb/load/$t-opts]

      # We call options "arguments" for the exec target
      # FIXME: this is really overloaded!!
      if {$t == "exec"} {
        set text "Arguments:"
      } else {
        set text "Options:"
      }
      $fr.cbl configure -text $text
    }
  }
}

# ------------------------------------------------------------------
#  METHOD:  change_target - callback for target combobox
# ------------------------------------------------------------------
body TargetSelection::change_target {w {name ""}} {
  if {$name == ""} {return}
  set target [get_target $name]

  if { "$target" == "exec" } {
    $RunMethod.run configure -state disabled -value 1
    $RunMethod.cont configure -state disabled
  } else {
    $RunMethod.run configure -state normal
    $RunMethod.cont configure -state normal
  }

  debug "$target"
  set defbaud $gdb_target($target,defbaud)
  pref define gdb/load/$target-baud $defbaud
  pref define gdb/load/$target-portname 1000
  pref define gdb/load/$target-hostname [pref get gdb/load/default-hostname]
  if {$defbaud == ""} {
    pref define gdb/load/$target-port ""
  } else {
    pref define gdb/load/$target-port [pref get gdb/load/default-port]
  }

  config_dialog $target
  fill_rates

  # Configure the default run options for this target
  set err [catch {pref get gdb/load/$target-runlist} run_list]
  if {$err} {
    set run_list $gdb_target($target,runlist)
    pref setd gdb/load/$target-runlist $run_list
  }

  pref set gdb/src/run_attach [lindex $run_list 0]
  pref set gdb/src/run_load   [lindex $run_list 1]
  pref set gdb/src/run_run    [lindex $run_list 2]
  pref set gdb/src/run_cont   [lindex $run_list 3]
  set_check_button $name

  set err [catch {pref get gdb/load/$target-after_attaching} aa]
  if {$err} {
    set aa $gdb_target($target,after_attaching)
    pref setd gdb/load/$target-after_attaching $aa
  }

  $_after_entry delete 0 end
  $_after_entry insert 0 $aa

  set_saved

  set changes 0
}

# ------------------------------------------------------------------
#  PRIVATE METHOD:  change_baud - called when the baud rate is changed.
#  If GDB is running, set baud rate in GDB and read it back.
# ------------------------------------------------------------------
body TargetSelection::change_baud {w {baud ""}} {
  if {$baud != ""} {
    if {([string compare $baud "TCP"] != 0)
        && ([string compare $baud "ETH"] != 0)} {
      gdb_cmd "set remotebaud $baud"
      if {[catch {gdb_cmd "show remotebaud"} res]} {
        set newbaud 0
      } else {
        set newbaud [lindex $res end]
        set newbaud [string trimright $newbaud "."]
        if {$newbaud > 4000000} {
          set newbaud 0
        }
      }
      if {$newbaud != $baud} {
        pref set gdb/load/$target-baud $newbaud
      }
    }
  }
}


# ------------------------------------------------------------------
#  METHOD:  port_list - return a list of valid ports for Windows
# ------------------------------------------------------------------
body TargetSelection::port_list {} {
  set plist ""
  # Scan com1 - com8 trying to open each one.
  # If permission is denied that means it is in use,
  # which is OK because we may be using it or the user
  # may be setting up the remote target manually with
  # a terminal program.
  for {set i 1} {$i < 9} { incr i} {
    if {[catch { set fd [::open COM$i: RDWR] } msg]} {
      # Failed.  Find out why.
      if {[string first "permission denied" $msg] != -1} {
        # Port is there, but busy right now. That's OK.
        lappend plist com$i
      }
    } else {
      # We got it.  Now close it and add to list.
      close $fd
      lappend plist com$i
    }
  }
  return $plist
}

# ------------------------------------------------------------------
#  METHOD:  get_target_list - return a list of targets supported
#  by this GDB.  Parses the output of "help target"
# ------------------------------------------------------------------
body TargetSelection::get_target_list {} {
  set native [native_debugging]
  set names ""
  set res [gdb_cmd "help target"]
  foreach line [split $res \n] {
    if {![string compare [lindex $line 0] "target"]} {
      set name [lindex $line 1]

      # For cross debuggers, do not allow the target "exec"
      if {$name == "exec" && !$native} {
        continue
      }
      lappend names $name
    }
  }
  return $names
}

# ------------------------------------------------------------------
#  METHOD:  save - save values
# ------------------------------------------------------------------
body TargetSelection::save {} {
  global gdb_target_name
  set err [catch {
    set_saved
    write_saved
    set gdb_target_name $target
    pref setd gdb/load/target $target
  } errtxt]
  if {$err} {debug "target: $errtxt"}
  if {[valid_target $gdb_target_name]} {
    # Dismiss the dialog box
    unpost
  } else {
    tk_messageBox -message "The current target is not valid."
  }
  
}


# ------------------------------------------------------------------
#  METHOD:  cancel - restore previous values
# ------------------------------------------------------------------
body TargetSelection::cancel {} {
  global gdb_target_name
  catch {gdb_cmd "set remotebaud $saved_baud"}

  $fr.cb configure -value $saved_baud
  write_saved
  if {$exportcancel} {
    set gdb_target_name CANCEL
  }

  # Now dismiss the dialog
  unpost
}

# ------------------------------------------------------------------
#  METHOD: set_check_button - enable/disable compare-section command 
# ------------------------------------------------------------------
body TargetSelection::set_check_button {name} {
  if {[winfo exists  $itk_interior.f.fr.check]} {
    if { $name == "exec" } {
      $itk_interior.f.fr.check configure -state disabled
    } else {
      $itk_interior.f.fr.check configure -state normal
    }
  }
}

# ------------------------------------------------------------------
#  METHOD:  help - launches context sensitive help.
# ------------------------------------------------------------------
body TargetSelection::help {} {
}

# ------------------------------------------------------------------
#  METHOD:  reconfig - used when preferences change
# ------------------------------------------------------------------
body TargetSelection::reconfig {} {
  # for now, just delete and recreate
  destroy $itk_interior.f
  build_win
}

# ------------------------------------------------------------------
#  METHOD:  get_target - get the internal name of a target from the
#              pretty-name
# ------------------------------------------------------------------
body TargetSelection::get_target {name} {
  set t {}
  set list [array get gdb_target *,pretty-name]
  set i [lsearch -exact $list $name]
  if {$i != -1} {
    incr i -1
    set t [lindex [split [lindex $list $i] ,] 0]
  } else {
    debug "unknown pretty-name \"$name\""
  }
  return $t
}

# ------------------------------------------------------------------
#  METHOD: toggle_more_options -- toggle displaying the  More/Fewer
#                Options pane
# ------------------------------------------------------------------
body TargetSelection::toggle_more_options {} {
  if {[$MoreLabel cget -text] == "More Options"} {
    $MoreLabel configure -text "Fewer Options"
    $MoreButton configure -image _LESS_
    # Bug in Tk? The top-most frame does not shrink...
    #pack $MoreFrame
    pack $itk_interior.moreoptionsframe -after $itk_interior.moreoptions -fill both -padx 5 -pady 5
  } else {
    $MoreLabel configure -text "More Options"
    $MoreButton configure -image _MORE_
    #pack forget $MoreFrame
    pack forget $itk_interior.moreoptionsframe
  }
}

# ------------------------------------------------------------------
#  METHOD:  set_run - set the run button. Make sure not both run and
#                     continue are selected.
# ------------------------------------------------------------------
body TargetSelection::set_run {check_which} {
  global PREFS_state
  set var [pref varname gdb/src/run_$check_which]
  global $var
  if {[set $var]} {
    set $var 0
  }
}

# ------------------------------------------------------------------
#   PROCEDURE: target_trace
#          This procedure is used to configure gdb_loaded
#          and possible more) whenever the value of gdb_loaded
#          is changed based on the current target.
# ------------------------------------------------------------------
body TargetSelection::target_trace {variable index op} {
  global gdb_target_name gdb_loaded

  switch $gdb_target_name {

    exec {
      # The exec target is always loaded.
      set gdb_loaded 1
    }
  }
}

# Returns 1 if TARGET is a _runnable_ target for this gdb.
body TargetSelection::valid_target {target} {
  set err [catch {gdb_cmd "help target $target"}]
  if {$target == "exec" && ![native_debugging]} {
    set err 1
  }

  if {[regexp "tcp$" $target]} {
    # Special case (of course)
    regsub tcp$ $target {} foo
    return [valid_target $foo]
  }

  return [expr {$err == 0}]
}

# Returns 1 if this is not a cross debugger.
body TargetSelection::native_debugging {} {
  global GDBStartup

  set r [string compare $GDBStartup(host_name) $GDBStartup(target_name)]
  return [expr {!$r}]
}

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