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7b6bb8da | 1 | # Copyright 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
2f83a18e | 2 | # Free Software Foundation, Inc. |
6f8eac0e DJ |
3 | |
4 | # This program is free software; you can redistribute it and/or modify | |
5 | # it under the terms of the GNU General Public License as published by | |
e22f8b7c | 6 | # the Free Software Foundation; either version 3 of the License, or |
6f8eac0e | 7 | # (at your option) any later version. |
e22f8b7c | 8 | # |
6f8eac0e DJ |
9 | # This program is distributed in the hope that it will be useful, |
10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | # GNU General Public License for more details. | |
e22f8b7c | 13 | # |
6f8eac0e | 14 | # You should have received a copy of the GNU General Public License |
e22f8b7c | 15 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
6f8eac0e DJ |
16 | |
17 | # This file is based on config/gdbserver.exp, which was written by | |
18 | # Michael Snyder (msnyder@redhat.com). | |
19 | ||
20 | # | |
21 | # To be addressed or set in your baseboard config file: | |
22 | # | |
23 | # set_board_info gdb_protocol "remote" | |
24 | # Unles you have a gdbserver that uses a different protocol... | |
25 | # | |
26 | # set_board_info gdb_server_prog | |
27 | # This will be the path to the gdbserver program you want to test. | |
28 | # Defaults to "gdbserver". | |
29 | # | |
30 | # set_board_info sockethost | |
31 | # The name of the host computer whose socket is being used. | |
32 | # Defaults to "localhost". Note: old gdbserver requires | |
33 | # that you define this, but libremote/gdbserver does not. | |
34 | # | |
35 | # set_board_info gdb,socketport | |
36 | # Port id to use for socket connection. If not set explicitly, | |
37 | # it will start at "2345" and increment for each use. | |
38 | # | |
39 | ||
40 | # | |
41 | # gdb_target_cmd | |
42 | # Send gdb the "target" command | |
43 | # | |
44 | proc gdb_target_cmd { targetname serialport } { | |
45 | global gdb_prompt | |
46 | ||
ef783a7d | 47 | set serialport_re [string_to_regexp $serialport] |
6f8eac0e DJ |
48 | for {set i 1} {$i <= 3} {incr i} { |
49 | send_gdb "target $targetname $serialport\n" | |
50 | gdb_expect 60 { | |
51 | -re "A program is being debugged already.*ill it.*y or n. $" { | |
52 | send_gdb "y\n" | |
53 | exp_continue | |
54 | } | |
401ea829 JB |
55 | -re "unknown host.*$gdb_prompt" { |
56 | verbose "Couldn't look up $serialport" | |
57 | } | |
2f83a18e | 58 | -re "Couldn't establish connection to remote.*$gdb_prompt $" { |
6f8eac0e DJ |
59 | verbose "Connection failed" |
60 | } | |
61 | -re "Remote MIPS debugging.*$gdb_prompt" { | |
62 | verbose "Set target to $targetname" | |
63 | return 0 | |
64 | } | |
ef783a7d | 65 | -re "Remote debugging using .*$serialport_re.*$gdb_prompt $" { |
6f8eac0e DJ |
66 | verbose "Set target to $targetname" |
67 | return 0 | |
68 | } | |
2f83a18e | 69 | -re "Remote target $targetname connected to.*$gdb_prompt $" { |
6f8eac0e DJ |
70 | verbose "Set target to $targetname" |
71 | return 0 | |
72 | } | |
2f83a18e | 73 | -re "Connected to.*$gdb_prompt $" { |
6f8eac0e DJ |
74 | verbose "Set target to $targetname" |
75 | return 0 | |
76 | } | |
2f83a18e DJ |
77 | -re "Ending remote.*$gdb_prompt $" { } |
78 | -re "Connection refused.*$gdb_prompt $" { | |
6f8eac0e DJ |
79 | verbose "Connection refused by remote target. Pausing, and trying again." |
80 | sleep 30 | |
81 | continue | |
82 | } | |
2f83a18e | 83 | -re "Timeout reading from remote system.*$gdb_prompt $" { |
6f8eac0e DJ |
84 | verbose "Got timeout error from gdb." |
85 | } | |
b741e217 DJ |
86 | -notransfer -re "Remote debugging using .*\r\n> $" { |
87 | # We got an unexpected prompt while creating the target. | |
88 | # Leave it there for the test to diagnose. | |
89 | return 1 | |
90 | } | |
6f8eac0e DJ |
91 | timeout { |
92 | send_gdb "\ 3" | |
93 | break | |
94 | } | |
95 | } | |
96 | } | |
97 | return 1 | |
98 | } | |
99 | ||
100 | ||
101 | global portnum | |
102 | set portnum "2345" | |
103 | ||
104 | # Locate the gdbserver binary. Returns "" if gdbserver could not be found. | |
105 | ||
106 | proc find_gdbserver { } { | |
107 | global GDB | |
6fadd07a DE |
108 | global GDBSERVER |
109 | ||
110 | if [info exists GDBSERVER] { | |
111 | return ${GDBSERVER} | |
112 | } | |
6f8eac0e DJ |
113 | |
114 | if [target_info exists gdb_server_prog] { | |
115 | return [target_info gdb_server_prog] | |
116 | } | |
117 | ||
118 | set gdbserver "${GDB}server" | |
119 | if { [file isdirectory $gdbserver] } { | |
120 | append gdbserver "/gdbserver" | |
121 | } | |
122 | ||
123 | if { [file executable $gdbserver] } { | |
124 | return $gdbserver | |
125 | } | |
126 | ||
127 | return "" | |
128 | } | |
129 | ||
130 | # Return non-zero if we should skip gdbserver-specific tests. | |
131 | ||
132 | proc skip_gdbserver_tests { } { | |
133 | if { [find_gdbserver] == "" } { | |
134 | return 1 | |
135 | } | |
136 | ||
137 | return 0 | |
138 | } | |
139 | ||
2d717e4f DJ |
140 | # Download the currently loaded program to the target if necessary. |
141 | # Return the target system filename. | |
6496a609 DE |
142 | # NOTE: This was named "gdbserver_download", but that collides with the |
143 | # dejagnu "download" API function when using load_generic_config "gdbserver". | |
6f8eac0e | 144 | |
6496a609 | 145 | proc gdbserver_download_current_prog { } { |
b741e217 DJ |
146 | global gdbserver_host_exec |
147 | global gdbserver_host_mtime | |
148 | global gdbserver_server_exec | |
149 | global last_loaded_file | |
150 | ||
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] } { | |
156 | 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 } { | |
170 | set gdbserver_host_exec $host_exec | |
171 | set gdbserver_host_mtime [file mtime $host_exec] | |
172 | if [is_remote target] { | |
93f02886 | 173 | set gdbserver_server_exec [gdb_download $host_exec] |
b741e217 DJ |
174 | } else { |
175 | set gdbserver_server_exec $host_exec | |
176 | } | |
177 | } | |
6f8eac0e | 178 | |
2d717e4f DJ |
179 | return $gdbserver_server_exec |
180 | } | |
181 | ||
182 | # Start a gdbserver process with initial OPTIONS and trailing ARGUMENTS. | |
183 | # The port will be filled in between them automatically. | |
184 | # | |
185 | # Returns the target protocol and socket to connect to. | |
186 | ||
187 | proc gdbserver_start { options arguments } { | |
188 | global portnum | |
189 | ||
6f8eac0e DJ |
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] { | |
2d717e4f | 200 | set debughost [target_info sockethost] |
6f8eac0e DJ |
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] | |
213 | ||
047427a8 JK |
214 | # Loop till we find a free port. |
215 | while 1 { | |
216 | # Export the host:port pair. | |
217 | set gdbport $debughost$portnum | |
218 | ||
219 | # Fire off the debug agent. | |
220 | set gdbserver_command "$gdbserver" | |
221 | if { $options != "" } { | |
222 | append gdbserver_command " $options" | |
223 | } | |
224 | append gdbserver_command " :$portnum" | |
225 | if { $arguments != "" } { | |
226 | append gdbserver_command " $arguments" | |
227 | } | |
6f8eac0e | 228 | |
047427a8 JK |
229 | set server_spawn_id [remote_spawn target $gdbserver_command] |
230 | ||
231 | # Wait for the server to open its TCP socket, so that GDB can connect. | |
232 | expect { | |
233 | -i $server_spawn_id | |
234 | -notransfer | |
235 | -re "Listening on" { } | |
236 | -re "Can't bind address: Address already in use\\.\r\n" { | |
237 | verbose -log "Port $portnum is already in use." | |
238 | if ![target_info exists gdb,socketport] { | |
239 | # Bump the port number to avoid the conflict. | |
240 | wait -i $expect_out(spawn_id) | |
241 | incr portnum | |
242 | continue | |
243 | } | |
244 | } | |
245 | } | |
246 | break | |
6f8eac0e DJ |
247 | } |
248 | ||
249 | # We can't just call close, because if gdbserver is local then that means | |
250 | # that it will get a SIGHUP. Doing it this way could also allow us to | |
251 | # get at the inferior's input or output if necessary, and means that we | |
252 | # don't need to redirect output. | |
253 | expect_background { | |
254 | -i $server_spawn_id | |
2226f861 | 255 | full_buffer { } |
6f8eac0e DJ |
256 | eof { |
257 | # The spawn ID is already closed now (but not yet waited for). | |
258 | wait -i $expect_out(spawn_id) | |
259 | } | |
260 | } | |
261 | ||
262 | return [list $protocol $gdbport] | |
263 | } | |
264 | ||
2d717e4f DJ |
265 | # Start a gdbserver process running SERVER_EXEC, and connect GDB |
266 | # to it. CHILD_ARGS are passed to the inferior. | |
267 | # | |
268 | # Returns the target protocol and socket to connect to. | |
269 | ||
270 | proc gdbserver_spawn { child_args } { | |
6496a609 | 271 | set target_exec [gdbserver_download_current_prog] |
2d717e4f DJ |
272 | |
273 | # Fire off the debug agent. This flavour of gdbserver takes as | |
274 | # arguments the port information, the name of the executable file to | |
275 | # be debugged, and any arguments. | |
276 | set arguments "$target_exec" | |
277 | if { $child_args != "" } { | |
278 | append arguments " $child_args" | |
279 | } | |
280 | return [gdbserver_start "" $arguments] | |
281 | } | |
282 | ||
6f8eac0e DJ |
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 | ||
b741e217 | 286 | proc gdbserver_run { child_args } { |
b0f4b84b DJ |
287 | global gdbserver_protocol |
288 | global gdbserver_gdbport | |
289 | ||
2226f861 DJ |
290 | # Kill anything running before we try to start gdbserver, in case |
291 | # 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 | ||
b741e217 | 305 | set res [gdbserver_spawn $child_args] |
b0f4b84b DJ |
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 | |
6f8eac0e | 317 | |
b0f4b84b | 318 | return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport] |
6f8eac0e | 319 | } |
2d717e4f DJ |
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 | } |