1 # Copyright 2000, 2002-2012 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
16 # This file is based on config/gdbserver.exp, which was written by
17 # Michael Snyder (msnyder@redhat.com).
20 # To be addressed or set in your baseboard config file:
22 # set_board_info gdb_protocol "remote"
23 # Unles you have a gdbserver that uses a different protocol...
24 # After GDB starts you should check global $gdbserver_protocol instead as
25 # the testfile may force a specific different target protocol itself.
27 # set_board_info gdb_server_prog
28 # This will be the path to the gdbserver program you want to test.
29 # Defaults to "gdbserver".
31 # set_board_info sockethost
32 # The name of the host computer whose socket is being used.
33 # Defaults to "localhost". Note: old gdbserver requires
34 # that you define this, but libremote/gdbserver does not.
36 # set_board_info gdb,socketport
37 # Port id to use for socket connection. If not set explicitly,
38 # it will start at "2345" and increment for each use.
39 # After GDB starts you should check global $gdbserver_gdbport for the
40 # real port used. It is not useful if $gdbserver_reconnect_p was not set.
45 # Send gdb the "target" command
47 proc gdb_target_cmd { targetname serialport } {
50 set serialport_re [string_to_regexp $serialport]
51 for {set i 1} {$i <= 3} {incr i} {
52 send_gdb "target $targetname $serialport\n"
54 -re "A program is being debugged already.*ill it.*y or n. $" {
58 -re "unknown host.*$gdb_prompt" {
59 verbose "Couldn't look up $serialport"
61 -re "Couldn't establish connection to remote.*$gdb_prompt $" {
62 verbose "Connection failed"
64 -re "Remote MIPS debugging.*$gdb_prompt" {
65 verbose "Set target to $targetname"
68 -re "Remote debugging using .*$serialport_re.*$gdb_prompt $" {
69 verbose "Set target to $targetname"
72 -re "Remote debugging using stdio.*$gdb_prompt $" {
73 verbose "Set target to $targetname"
76 -re "Remote target $targetname connected to.*$gdb_prompt $" {
77 verbose "Set target to $targetname"
80 -re "Connected to.*$gdb_prompt $" {
81 verbose "Set target to $targetname"
84 -re "Ending remote.*$gdb_prompt $" { }
85 -re "Connection refused.*$gdb_prompt $" {
86 verbose "Connection refused by remote target. Pausing, and trying again."
90 -re "Timeout reading from remote system.*$gdb_prompt $" {
91 verbose "Got timeout error from gdb."
93 -notransfer -re "Remote debugging using .*\r\n> $" {
94 # We got an unexpected prompt while creating the target.
95 # Leave it there for the test to diagnose.
111 # Locate the gdbserver binary. Returns "" if gdbserver could not be found.
113 proc find_gdbserver { } {
117 if [info exists GDBSERVER] {
121 if [target_info exists gdb_server_prog] {
122 return [target_info gdb_server_prog]
125 set gdbserver "${GDB}server"
126 if { [file isdirectory $gdbserver] } {
127 append gdbserver "/gdbserver"
130 if { [file executable $gdbserver] } {
137 # Return non-zero if we should skip gdbserver-specific tests.
139 proc skip_gdbserver_tests { } {
140 if { [find_gdbserver] == "" } {
147 # Download the currently loaded program to the target if necessary.
148 # Return the target system filename.
149 # NOTE: This was named "gdbserver_download", but that collides with the
150 # dejagnu "download" API function when using load_generic_config "gdbserver".
152 proc gdbserver_download_current_prog { } {
153 global gdbserver_host_exec
154 global gdbserver_host_mtime
155 global gdbserver_server_exec
156 global last_loaded_file
158 set host_exec $last_loaded_file
160 # If we already downloaded a file to the target, see if we can reuse it.
162 if { [info exists gdbserver_server_exec] } {
165 # If the file has changed, we can not.
166 if { $host_exec != $gdbserver_host_exec } {
170 # If the mtime has changed, we can not.
171 if { [file mtime $host_exec] != $gdbserver_host_mtime } {
177 set gdbserver_host_exec $host_exec
178 set gdbserver_host_mtime [file mtime $host_exec]
179 if [is_remote target] {
180 set gdbserver_server_exec [gdb_download $host_exec]
182 set gdbserver_server_exec $host_exec
186 return $gdbserver_server_exec
189 # Default routine to compute the argument to "target remote".
191 proc gdbserver_default_get_remote_address { host port } {
195 # Start a gdbserver process with initial OPTIONS and trailing ARGUMENTS.
196 # The port will be filled in between them automatically.
198 # Returns the target protocol and socket to connect to.
200 proc gdbserver_start { options arguments } {
203 # Port id -- either specified in baseboard file, or managed here.
204 if [target_info exists gdb,socketport] {
205 set portnum [target_info gdb,socketport]
207 # Bump the port number to avoid conflicts with hung ports.
211 # Extract the local and remote host ids from the target board struct.
212 if [target_info exists sockethost] {
213 set debughost [target_info sockethost]
215 set debughost "localhost:"
218 # Some boards use a different value for the port that is passed to
219 # gdbserver and the port that is passed to the "target remote" command.
220 # One example is the stdio gdbserver support.
221 if [target_info exists gdb,get_remote_address] {
222 set get_remote_address [target_info gdb,get_remote_address]
224 set get_remote_address gdbserver_default_get_remote_address
227 # Extract the protocol
228 if [target_info exists gdb_protocol] {
229 set protocol [target_info gdb_protocol]
231 set protocol "remote"
234 set gdbserver [find_gdbserver]
236 # Loop till we find a free port.
238 # Fire off the debug agent.
239 set gdbserver_command "$gdbserver"
241 # If gdbserver_reconnect will be called $gdbserver_reconnect_p must be
242 # set to true already during gdbserver_start.
243 global gdbserver_reconnect_p
244 if {![info exists gdbserver_reconnect_p] || !$gdbserver_reconnect_p} {
245 # GDB client could accidentally connect to a stale server.
246 # append gdbserver_command " --debug --once"
247 append gdbserver_command " --once"
250 if { $options != "" } {
251 append gdbserver_command " $options"
253 if { $portnum != "" } {
254 append gdbserver_command " :$portnum"
256 if { $arguments != "" } {
257 append gdbserver_command " $arguments"
260 set server_spawn_id [remote_spawn target $gdbserver_command]
262 # Wait for the server to open its TCP socket, so that GDB can connect.
266 -re "Listening on" { }
267 -re "Can't bind address: Address already in use\\.\r\n" {
268 verbose -log "Port $portnum is already in use."
269 if ![target_info exists gdb,socketport] {
270 # Bump the port number to avoid the conflict.
271 wait -i $expect_out(spawn_id)
280 # We can't just call close, because if gdbserver is local then that means
281 # that it will get a SIGHUP. Doing it this way could also allow us to
282 # get at the inferior's input or output if necessary, and means that we
283 # don't need to redirect output.
288 # The spawn ID is already closed now (but not yet waited for).
289 wait -i $expect_out(spawn_id)
293 return [list $protocol [$get_remote_address $debughost $portnum]]
296 # Start a gdbserver process running SERVER_EXEC, and connect GDB
297 # to it. CHILD_ARGS are passed to the inferior.
299 # Returns the target protocol and socket to connect to.
301 proc gdbserver_spawn { child_args } {
302 set target_exec [gdbserver_download_current_prog]
304 # Fire off the debug agent. This flavour of gdbserver takes as
305 # arguments the port information, the name of the executable file to
306 # be debugged, and any arguments.
307 set arguments "$target_exec"
308 if { $child_args != "" } {
309 append arguments " $child_args"
311 return [gdbserver_start "" $arguments]
314 # Start a gdbserver process running HOST_EXEC and pass CHILD_ARGS
315 # to it. Return 0 on success, or non-zero on failure.
317 proc gdbserver_run { child_args } {
318 global gdbserver_protocol
319 global gdbserver_gdbport
321 # Kill anything running before we try to start gdbserver, in case
322 # we are sharing a serial connection.
326 -re "Kill the program being debugged. .y or n. $" {
328 verbose "\t\tKilling previous program being debugged"
331 -re "$gdb_prompt $" {
336 set res [gdbserver_spawn $child_args]
337 set gdbserver_protocol [lindex $res 0]
338 set gdbserver_gdbport [lindex $res 1]
340 return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
343 # Reconnect to the previous gdbserver session.
345 proc gdbserver_reconnect { } {
346 global gdbserver_protocol
347 global gdbserver_gdbport
349 global gdbserver_reconnect_p;
350 if {![info exists gdbserver_reconnect_p] || !$gdbserver_reconnect_p} {
351 error "gdbserver_reconnect_p is not set before gdbserver_reconnect"
355 return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
358 # Start and connect to a gdbserver in extended mode.
359 proc gdbserver_start_extended { } {
360 global gdbserver_protocol
361 global gdbserver_gdbport
364 set res [gdbserver_start "--multi" ""]
365 set gdbserver_protocol "extended-[lindex $res 0]"
366 set gdbserver_gdbport [lindex $res 1]
368 # Even if the board file is testing with target remote, our caller
369 # wants to test against gdbserver in extended-remote mode. Make sure to
370 # disable stub-like techniques.
373 return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]