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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.2/] [gdb/] [testsuite/] [lib/] [gdbserver-support.exp] - Blame information for rev 330

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1 330 jeremybenn
# Copyright 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
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# Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program.  If not, see .
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# This file is based on config/gdbserver.exp, which was written by
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# Michael Snyder (msnyder@redhat.com).
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#
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# To be addressed or set in your baseboard config file:
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#
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#   set_board_info gdb_protocol "remote"
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#       Unles you have a gdbserver that uses a different protocol...
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#
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#   set_board_info gdb_server_prog
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#       This will be the path to the gdbserver program you want to test.
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#       Defaults to "gdbserver".
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#
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#   set_board_info sockethost
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#       The name of the host computer whose socket is being used.
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#       Defaults to "localhost".  Note: old gdbserver requires
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#       that you define this, but libremote/gdbserver does not.
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#
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#   set_board_info gdb,socketport
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#       Port id to use for socket connection.  If not set explicitly,
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#       it will start at "2345" and increment for each use.
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#
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#
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# gdb_target_cmd
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# Send gdb the "target" command
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#
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proc gdb_target_cmd { targetname serialport } {
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    global gdb_prompt
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    set serialport_re [string_to_regexp $serialport]
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    for {set i 1} {$i <= 3} {incr i} {
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        send_gdb "target $targetname $serialport\n"
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        gdb_expect 60 {
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            -re "A program is being debugged already.*ill it.*y or n. $" {
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                send_gdb "y\n"
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                exp_continue
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            }
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            -re "unknown host.*$gdb_prompt" {
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                verbose "Couldn't look up $serialport"
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            }
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            -re "Couldn't establish connection to remote.*$gdb_prompt $" {
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                verbose "Connection failed"
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            }
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            -re "Remote MIPS debugging.*$gdb_prompt" {
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                verbose "Set target to $targetname"
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                return 0
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            }
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            -re "Remote debugging using .*$serialport_re.*$gdb_prompt $" {
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                verbose "Set target to $targetname"
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                return 0
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            }
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            -re "Remote target $targetname connected to.*$gdb_prompt $" {
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                verbose "Set target to $targetname"
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                return 0
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            }
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            -re "Connected to.*$gdb_prompt $" {
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                verbose "Set target to $targetname"
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                return 0
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            }
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            -re "Ending remote.*$gdb_prompt $" { }
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            -re "Connection refused.*$gdb_prompt $" {
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                verbose "Connection refused by remote target.  Pausing, and trying again."
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                sleep 30
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                continue
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            }
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            -re "Timeout reading from remote system.*$gdb_prompt $" {
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                verbose "Got timeout error from gdb."
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            }
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            -notransfer -re "Remote debugging using .*\r\n> $" {
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                # We got an unexpected prompt while creating the target.
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                # Leave it there for the test to diagnose.
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                return 1
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            }
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            timeout {
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                send_gdb ""
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                break
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            }
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        }
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    }
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    return 1
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}
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global portnum
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set portnum "2345"
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# Locate the gdbserver binary.  Returns "" if gdbserver could not be found.
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proc find_gdbserver { } {
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  global GDB
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  global GDBSERVER
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  if [info exists GDBSERVER] {
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    return ${GDBSERVER}
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  }
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  if [target_info exists gdb_server_prog] {
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    return [target_info gdb_server_prog]
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  }
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  set gdbserver "${GDB}server"
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  if { [file isdirectory $gdbserver] } {
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    append gdbserver "/gdbserver"
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  }
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  if { [file executable $gdbserver] } {
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    return $gdbserver
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  }
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  return ""
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}
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# Return non-zero if we should skip gdbserver-specific tests.
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132
proc skip_gdbserver_tests { } {
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  if { [find_gdbserver] == "" } {
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    return 1
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  }
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  return 0
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}
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# Download the currently loaded program to the target if necessary.
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# Return the target system filename.
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# NOTE: This was named "gdbserver_download", but that collides with the
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# dejagnu "download" API function when using load_generic_config "gdbserver".
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proc gdbserver_download_current_prog { } {
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    global gdbserver_host_exec
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    global gdbserver_host_mtime
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    global gdbserver_server_exec
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    global last_loaded_file
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151
    set host_exec $last_loaded_file
152
 
153
    # If we already downloaded a file to the target, see if we can reuse it.
154
    set reuse 0
155
    if { [info exists gdbserver_server_exec] } {
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        set reuse 1
157
 
158
        # If the file has changed, we can not.
159
        if { $host_exec != $gdbserver_host_exec } {
160
            set reuse 0
161
        }
162
 
163
        # If the mtime has changed, we can not.
164
        if { [file mtime $host_exec] != $gdbserver_host_mtime } {
165
            set reuse 0
166
        }
167
    }
168
 
169
    if { $reuse == 0 } {
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        set gdbserver_host_exec $host_exec
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        set gdbserver_host_mtime [file mtime $host_exec]
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        if [is_remote target] {
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            set gdbserver_server_exec [gdb_download $host_exec]
174
        } else {
175
            set gdbserver_server_exec $host_exec
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        }
177
    }
178
 
179
    return $gdbserver_server_exec
180
}
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182
# Start a gdbserver process with initial OPTIONS and trailing ARGUMENTS.
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# The port will be filled in between them automatically.
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#
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# Returns the target protocol and socket to connect to.
186
 
187
proc gdbserver_start { options arguments } {
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    global portnum
189
 
190
    # Port id -- either specified in baseboard file, or managed here.
191
    if [target_info exists gdb,socketport] {
192
        set portnum [target_info gdb,socketport]
193
    } else {
194
        # Bump the port number to avoid conflicts with hung ports.
195
        incr portnum
196
    }
197
 
198
    # Extract the local and remote host ids from the target board struct.
199
    if [target_info exists sockethost] {
200
        set debughost [target_info sockethost]
201
    } else {
202
        set debughost "localhost:"
203
    }
204
 
205
    # Extract the protocol
206
    if [target_info exists gdb_protocol] {
207
        set protocol [target_info gdb_protocol]
208
    } else {
209
        set protocol "remote"
210
    }
211
 
212
    set gdbserver [find_gdbserver]
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214
    # Loop till we find a free port.
215
    while 1 {
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        # Export the host:port pair.
217
        set gdbport $debughost$portnum
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219
        # Fire off the debug agent.
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        set gdbserver_command "$gdbserver"
221
        if { $options != "" } {
222
            append gdbserver_command " $options"
223
        }
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        append gdbserver_command " :$portnum"
225
        if { $arguments != "" } {
226
            append gdbserver_command " $arguments"
227
        }
228
 
229
        set server_spawn_id [remote_spawn target $gdbserver_command]
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231
        # Wait for the server to open its TCP socket, so that GDB can connect.
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        expect {
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            -i $server_spawn_id
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            -notransfer
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            -re "Listening on" { }
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            -re "Can't bind address: Address already in use\\.\r\n" {
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                verbose -log "Port $portnum is already in use."
238
                if ![target_info exists gdb,socketport] {
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                    # Bump the port number to avoid the conflict.
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                    wait -i $expect_out(spawn_id)
241
                    incr portnum
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                    continue
243
                }
244
            }
245
        }
246
        break
247
    }
248
 
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    # We can't just call close, because if gdbserver is local then that means
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    # that it will get a SIGHUP.  Doing it this way could also allow us to
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    # get at the inferior's input or output if necessary, and means that we
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    # don't need to redirect output.
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    expect_background {
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        -i $server_spawn_id
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        full_buffer { }
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        eof {
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            # The spawn ID is already closed now (but not yet waited for).
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            wait -i $expect_out(spawn_id)
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        }
260
    }
261
 
262
    return [list $protocol $gdbport]
263
}
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265
# Start a gdbserver process running SERVER_EXEC, and connect GDB
266
# to it.  CHILD_ARGS are passed to the inferior.
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#
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# Returns the target protocol and socket to connect to.
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270
proc gdbserver_spawn { child_args } {
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    set target_exec [gdbserver_download_current_prog]
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    # Fire off the debug agent.  This flavour of gdbserver takes as
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    # arguments the port information, the name of the executable file to
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    # be debugged, and any arguments.
276
    set arguments "$target_exec"
277
    if { $child_args != "" } {
278
        append arguments " $child_args"
279
    }
280
    return [gdbserver_start "" $arguments]
281
}
282
 
283
# Start a gdbserver process running HOST_EXEC and pass CHILD_ARGS
284
# to it.  Return 0 on success, or non-zero on failure.
285
 
286
proc gdbserver_run { child_args } {
287
    global gdbserver_protocol
288
    global gdbserver_gdbport
289
 
290
    # Kill anything running before we try to start gdbserver, in case
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    # we are sharing a serial connection.
292
    global gdb_prompt
293
    send_gdb "kill\n"
294
    gdb_expect 120 {
295
        -re "Kill the program being debugged. .y or n. $" {
296
            send_gdb "y\n"
297
            verbose "\t\tKilling previous program being debugged"
298
            exp_continue
299
        }
300
        -re "$gdb_prompt $" {
301
            # OK.
302
        }
303
    }
304
 
305
    set res [gdbserver_spawn $child_args]
306
    set gdbserver_protocol [lindex $res 0]
307
    set gdbserver_gdbport [lindex $res 1]
308
 
309
    return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
310
}
311
 
312
# Reconnect to the previous gdbserver session.
313
 
314
proc gdbserver_reconnect { } {
315
    global gdbserver_protocol
316
    global gdbserver_gdbport
317
 
318
    return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
319
}
320
 
321
# Start and connect to a gdbserver in extended mode.
322
proc gdbserver_start_extended { } {
323
    set res [gdbserver_start "--multi" ""]
324
    set gdbserver_protocol "extended-[lindex $res 0]"
325
    set gdbserver_gdbport [lindex $res 1]
326
 
327
    return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
328
}

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