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Date: Wed, 30 Jul 2003 15:14:00 -0000
From: msarasa@fh-konstanz.de
To: gdb@sources.redhat.com
Cc: jingham@cygnus.com
Subject: targetselection.itb problem
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I'm finishing my Final Project for Computer Science, but I'm not able to get 
the solution for a little detail.

HAcking the remote serial protocol , I've added a new file ser-simuart.c like 
ser-unix.c or ser-pipe.c. This allows gdb to communicate with a software 
simulated device through a software sim Uart.

from the console , we write 

(gdb) target remote simuart

and it connects to the simulator.
But in the target selection dialog , I find some problems:

In the file targetselection.itb located in gdbtk/library

to the existant code:

# 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) {}

I've added:

# Simuart E1 overwriting remote serial target
  set gdb_target(remote,pretty-name) "Remote/Simuart_e1"
  set gdb_target(remote,defbaud)  ""
  set gdb_target(remote,baud-rates) {}
  set gdb_target(remote,cmd) "remote simuart"
  set gdb_target(remote,runlist) {1 1 0 1}
  set gdb_target(remote,after_attaching) {}
 
This works properly , but overwrites the remote serial option. So , just the 
remote simuart is displayed in the roll-down menu.

If I do:

# Simuart E1
  set gdb_target(remotesimuart,pretty-name) "Remote/Simuart_e1"
  set gdb_target(remotesimuart,defbaud)  ""
  set gdb_target(remotesimuart,baud-rates) {}
  set gdb_target(remotesimuart,cmd) "remote simuart"
  set gdb_target(remotesimuart,runlist) {1 1 0 1}
  set gdb_target(remotesimuart,after_attaching) {}

And also modify :

# 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]
  }

  #modificado
  if {[regexp "simuart$" $target]} {
    # Special case (hacked for e1)
    regsub simuart$ $target {} foo
    return [valid_target $foo]
  }



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

to make the new target a possible one, both remote serial and remote simuart 
are displayed in the menu, but as i choose simuart one and try to connect , an 
error window tells me that "remotesimuart" is not a valid command. This 
doesn't happens with the first option , gdb executes "remote simuart" as said 
in the cmd option.

I also modified:

# ------------------------------------------------------------------
#  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)
      }

      #modificado simuart

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




What am I doing wrong? I want to display both remote/serial and remote simuart 
as valid target (they are) and to execute "target remote simuart" if this 
option is the chosen one.


Thanks a lot for the help!

miguel.