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b6ba6518 | 1 | # Copyright 1996, 1997 Free Software Foundation, Inc. |
c906108c SS |
2 | |
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 2 of the License, or | |
6 | # (at your option) any later version. | |
7 | # | |
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. | |
12 | # | |
13 | # You should have received a copy of the GNU General Public License | |
14 | # along with this program; if not, write to the Free Software | |
15 | # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
16 | ||
c906108c SS |
17 | # This file was written by Michael Snyder <msnyder@cygnus.com>. |
18 | ||
19 | # GDB support routines for a board using the sparclet remote debugging | |
20 | # protocol. | |
21 | ||
22 | load_lib remote.exp | |
23 | load_lib gdb.exp | |
24 | ||
25 | # | |
26 | # Sparclet remote run command. | |
27 | # | |
28 | ||
29 | proc gdb_start { } { | |
30 | global gdb_prompt | |
31 | ||
32 | if ![file exists loader] { | |
33 | global libdir | |
34 | set loader loader; | |
35 | ||
36 | if [target_info exists gdb_stub_offset] { | |
37 | set result [target_compile "${libdir}/stub-loader.c" $loader executable "libs=-Wl,-Ttext,[target_info gdb_stub_offset]"]; | |
38 | } else { | |
39 | set result [target_compile "${libdir}/stub-loader.c" $loader executable "ldscript=[target_info gdb_stub_ldscript]"]; | |
40 | } | |
41 | } | |
42 | ||
43 | verbose -log "$gdb_prompt is gdb prompt" | |
44 | ||
45 | set result 0; | |
46 | for { set y 0; } { $y < 4 } { incr y } { | |
47 | if { [default_gdb_start] != 0 } { | |
48 | return -1; | |
49 | } | |
50 | ||
51 | if [target_info exists baud] { | |
52 | send_gdb "set remotebaud [target_info baud]\n" | |
53 | gdb_expect { | |
54 | -re "$gdb_prompt" { } | |
55 | default { | |
56 | perror "Error setting baud rate." | |
57 | return -1; | |
58 | } | |
59 | } | |
60 | } | |
61 | ||
62 | for {set x 1;} { $x < 4 } {incr x} { | |
63 | set result [gdb_sparclet_startup $result]; | |
64 | if { $result > 0 } { | |
65 | return 1; | |
66 | } | |
67 | # mmmmm, magic numbers. | |
68 | if { $result == -42 || $result == -43 } { | |
69 | break; | |
70 | } else { | |
71 | reboot_target; | |
72 | } | |
73 | } | |
74 | if { $x == 4 } { | |
75 | return -1; | |
76 | } | |
77 | gdb_exit; | |
78 | sleep 5; | |
79 | } | |
80 | return -1; | |
81 | } | |
82 | ||
83 | proc gdb_sparclet_startup { arg } { | |
84 | global gdb_prompt | |
85 | global GDB | |
86 | global verbose | |
87 | ||
88 | set is_running_stub 0; | |
89 | ||
90 | if [target_info exists serial] { | |
91 | set serial [target_info serial]; | |
92 | } else { | |
93 | set serial [target_info netport]; | |
94 | } | |
95 | set protocol [target_info gdb_protocol]; | |
96 | set check_stub 1; | |
97 | if { $arg != -42 } { | |
98 | send_gdb "target $protocol $serial\n"; | |
99 | # 10 seconds may be a bit short. | |
100 | gdb_expect 10 { | |
101 | -re "already.*y or n." { | |
102 | gdb_send "y\n"; | |
103 | exp_continue; | |
104 | } | |
105 | -re "Remote target.*connected to.*$gdb_prompt" { set check_stub 0; } | |
106 | -re "$gdb_prompt" { } | |
107 | timeout { } | |
108 | } | |
109 | if { $check_stub } { | |
110 | verbose "timed out, checking if stub is already running" | |
111 | send_gdb "\003"; | |
112 | sleep 1; | |
113 | send_gdb "\003"; | |
114 | gdb_expect 10 { | |
115 | -re "$gdb_prompt" { } | |
116 | default { | |
117 | remote_close host; | |
118 | return -42; | |
119 | } | |
120 | } | |
121 | } | |
122 | } | |
123 | if [target_info exists gdb_serial] { | |
124 | set gdb_serial [target_info gdb_serial]; | |
125 | } else { | |
126 | set gdb_serial $serial; | |
127 | } | |
128 | if { $check_stub } { | |
129 | send_gdb "target remote $gdb_serial\n"; | |
130 | gdb_expect 15 { | |
131 | -re "Remote debugging.*$gdb_prompt" { | |
132 | verbose "stub is already running" | |
133 | set is_running_stub 1; | |
134 | } | |
135 | default { | |
136 | warning "board isn't responding"; | |
137 | remote_close host; | |
138 | remote_reboot target; | |
139 | return -43; | |
140 | } | |
141 | } | |
142 | } | |
143 | ||
144 | if { $is_running_stub == 0 } { | |
145 | global srcdir | |
146 | ||
147 | if [is_remote host] { | |
148 | set loader [remote_download host "loader"]; | |
149 | } else { | |
150 | set loader "loader"; | |
151 | } | |
152 | send_gdb "file $loader\n"; | |
153 | gdb_expect { | |
154 | -re "A program is being debug.*Kill it.*y or n. $" { | |
155 | send_gdb "y\n" | |
156 | exp_continue | |
157 | } | |
158 | -re "Load new symbol table.*y or n. $" { | |
159 | send_gdb "y\n" | |
160 | exp_continue | |
161 | } | |
162 | -re "Reading symbols from.*done..*$gdb_prompt $" {} | |
163 | -re "$gdb_prompt $" { perror "GDB couldn't find loader" } | |
164 | timeout { | |
165 | perror "(timeout) read symbol file" ; | |
166 | return -1 | |
167 | } | |
168 | } | |
169 | ||
170 | send_gdb "target $protocol $serial\n"; | |
171 | gdb_expect { | |
172 | -re "Remote target.*connected to.*$gdb_prompt" { } | |
173 | default { | |
174 | perror "Error reconnecting to board."; | |
175 | return -1; | |
176 | } | |
177 | } | |
178 | ||
179 | send_gdb "load $loader [target_info gdb_stub_offset]\n" | |
180 | verbose "Loading $loader into $GDB" 2 | |
181 | set no_run_command 0; | |
182 | gdb_expect 1200 { | |
183 | -re "Loading.*$gdb_prompt $" { | |
184 | verbose "Loaded $loader into $GDB" 1 | |
185 | } | |
186 | -re "Transfer rate:.*Switching to remote protocol.*Remote debugging" { | |
187 | set no_run_command 1; | |
188 | } | |
189 | -re "$gdb_prompt $" { | |
190 | if $verbose>1 then { | |
191 | perror "GDB couldn't load." | |
192 | } | |
193 | } | |
194 | timeout { | |
195 | if $verbose>1 then { | |
196 | perror "Timed out trying to load $arg." | |
197 | } | |
198 | } | |
199 | } | |
200 | ||
201 | if !$no_run_command { | |
202 | send_gdb "run\n"; | |
203 | gdb_expect 60 { | |
204 | -re "A program is being debug.*Kill it.*y or n. $" { | |
205 | send_gdb "y\n" | |
206 | exp_continue | |
207 | } | |
208 | -re "The program being debugged .*y or n. $" { | |
209 | send_gdb "y\n" | |
210 | exp_continue | |
211 | } | |
212 | -re "Starting program:.*loader.*$" { | |
213 | verbose "Starting loader succeeded" | |
214 | } | |
215 | timeout { | |
216 | perror "(timeout) starting the loader" ; | |
217 | return -1 | |
218 | } | |
219 | default { | |
220 | perror "error starting the loader"; | |
221 | } | |
222 | } | |
223 | } | |
224 | sleep 2; | |
225 | send_gdb "\ 3" | |
226 | sleep 1; | |
227 | send_gdb "\ 3" | |
228 | verbose "Sent ^C^C" | |
229 | gdb_expect 10 { | |
230 | -re "Give up .and stop debugging it.*$" { | |
231 | send_gdb "y\n" | |
232 | exp_continue | |
233 | } | |
234 | -re "$gdb_prompt $" { | |
235 | verbose "Running loader succeeded" | |
236 | } | |
237 | timeout { | |
238 | warning "(timeout) interrupting the loader" ; | |
239 | remote_close host; | |
240 | } | |
241 | default { | |
242 | warning "error interrupting the loader"; | |
243 | } | |
244 | } | |
245 | ||
246 | gdb_exit; | |
247 | return [gdb_start]; | |
248 | } | |
249 | return 1; | |
250 | } | |
251 | ||
252 | proc gdb_run_cmd { args } { | |
253 | global gdb_prompt | |
254 | ||
255 | gdb_breakpoint exit; | |
256 | send_gdb "set \$fp=0\n"; | |
257 | gdb_expect { | |
258 | -re "$gdb_prompt" { } | |
259 | } | |
260 | # This is needed for the SparcLite. Whee. | |
261 | if [target_info exists gdb,start_symbol] { | |
262 | set start_comm "jump *[target_info gdb,start_symbol]\n"; | |
263 | } else { | |
264 | set start_comm "jump *start\n"; | |
265 | } | |
266 | send_gdb "break copyloop\n"; | |
267 | gdb_expect 10 { | |
268 | -re "Breakpoint.*$gdb_prompt $" { | |
269 | set start_comm "continue\n"; | |
270 | } | |
271 | -re "$gdb_prompt $" { } | |
272 | timeout { warning "break copyloop failed badly"; } | |
273 | } | |
274 | send_gdb $start_comm; | |
275 | gdb_expect 10 { | |
276 | -re "y or n. $" { | |
277 | remote_send host "y\n" | |
278 | exp_continue; | |
279 | } | |
280 | -re "Breakpoint.*in copyloop.*$gdb_prompt $" { | |
281 | remote_send host "jump relocd\n"; | |
282 | exp_continue; | |
283 | } | |
284 | -re "Continuing at.*\[\r\n\]" { } | |
285 | default { | |
286 | return -1; | |
287 | } | |
288 | } | |
289 | ||
290 | return ""; | |
291 | } | |
292 | ||
293 | ||
294 | # | |
295 | # gdb_load -- load a file into the GDB. | |
296 | # Returns a 0 if there was an error, | |
297 | # 1 if it load successfully. | |
298 | # | |
299 | proc gdb_load { arg } { | |
300 | global verbose | |
301 | global loadpath | |
302 | global loadfile | |
303 | global gdb_prompt | |
304 | global GDB | |
305 | global expect_out | |
306 | ||
307 | set loadfile [file tail $arg] | |
308 | set loadpath [file dirname $arg] | |
309 | ||
310 | set protocol [target_info gdb_protocol]; | |
311 | ||
312 | if [is_remote host] { | |
313 | set arg [remote_download host $arg]; | |
314 | } | |
315 | send_gdb "file $arg\n" | |
316 | gdb_expect 30 { | |
317 | -re "A program is being debug.*Kill it.*y or n. $" { | |
318 | send_gdb "y\n" | |
319 | exp_continue | |
320 | } | |
321 | -re "Load new symbol table.*y or n. $" { | |
322 | send_gdb "y\n" | |
323 | exp_continue | |
324 | } | |
325 | -re "Reading symbols from.*done..*$gdb_prompt $" {} | |
326 | -re "$gdb_prompt $" { perror "GDB couldn't read file" } | |
327 | timeout { | |
328 | perror "(timeout) read symbol file" ; | |
329 | return -1 | |
330 | } | |
331 | } | |
332 | ||
333 | if [target_info exists gdb_serial] { | |
334 | set gdb_serial [target_info gdb_serial]; | |
335 | } else { | |
336 | if [target_info exists serial] { | |
337 | set gdb_serial [target_info serial]; | |
338 | } else { | |
339 | set gdb_serial [target_info netport]; | |
340 | } | |
341 | } | |
342 | send_gdb "target remote $gdb_serial\n" | |
343 | gdb_expect 30 { | |
344 | -re "Kill it?.*y or n.*" { | |
345 | send_gdb "y\n"; | |
346 | exp_continue | |
347 | } | |
348 | -re "$gdb_prompt $" { | |
349 | verbose "Set remote target to $gdb_serial" 2 | |
350 | } | |
351 | timeout { | |
352 | perror "Couldn't set remote target." | |
353 | return -1 | |
354 | } | |
355 | } | |
356 | if [target_info exists gdb_load_offset] { | |
357 | set offset "[target_info gdb_load_offset]"; | |
358 | } else { | |
359 | set offset ""; | |
360 | } | |
361 | send_gdb "load $arg $offset\n" | |
362 | verbose "Loading $arg into $GDB" 2 | |
363 | gdb_expect 1200 { | |
364 | -re "Loading.*$gdb_prompt $" { | |
365 | verbose "Loaded $arg into $GDB" 1 | |
366 | } | |
367 | -re "$gdb_prompt $" { | |
368 | if $verbose>1 then { | |
369 | perror "GDB couldn't load." | |
370 | } | |
371 | } | |
372 | timeout { | |
373 | if $verbose>1 then { | |
374 | perror "Timed out trying to load $arg." | |
375 | } | |
376 | } | |
377 | } | |
378 | send_gdb "list main\n"; | |
379 | gdb_expect 60 { | |
380 | -re "$gdb_prompt" { } | |
381 | default { | |
382 | perror "command for list main never completed"; | |
383 | return -1; | |
384 | } | |
385 | } | |
386 | ||
387 | return 0 | |
388 | } |