Commit | Line | Data |
---|---|---|
7b6bb8da | 1 | # Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
4c38e0a4 | 2 | # Free Software Foundation, Inc. |
f0fd9238 AC |
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 |
f0fd9238 | 7 | # (at your option) any later version. |
e22f8b7c | 8 | # |
f0fd9238 AC |
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 | # |
f0fd9238 | 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/>. |
f0fd9238 AC |
16 | |
17 | ||
18 | # The program sigstep.c creates a very simple backtrace containing one | |
b04e311d AC |
19 | # signal handler and signal trampoline. A flag is set and then the |
20 | # handler returns. This is repeated at infinitum. | |
f0fd9238 AC |
21 | |
22 | # This test runs the program up to the signal handler, and then | |
b04e311d | 23 | # attempts to step/next out of the handler and back into main. |
f0fd9238 AC |
24 | |
25 | if [target_info exists gdb,nosignals] { | |
26 | verbose "Skipping sigstep.exp because of nosignals." | |
27 | continue | |
28 | } | |
29 | ||
30 | if $tracelevel then { | |
31 | strace $tracelevel | |
32 | } | |
33 | ||
f0fd9238 AC |
34 | |
35 | set testfile sigstep | |
36 | set srcfile ${testfile}.c | |
37 | set binfile ${objdir}/${subdir}/${testfile} | |
38 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
ef783a7d | 39 | untested "Couldn't compile ${srcfile}.c" |
f0fd9238 AC |
40 | return -1 |
41 | } | |
42 | ||
43 | # get things started | |
44 | gdb_exit | |
45 | gdb_start | |
46 | gdb_reinitialize_dir $srcdir/$subdir | |
47 | gdb_load ${binfile} | |
48 | ||
49 | gdb_test "display/i \$pc" | |
50 | ||
51 | # Advance to main | |
52 | if { ![runto_main] } then { | |
53 | gdb_suppress_tests; | |
54 | } | |
55 | ||
56 | # Pass all the alarms straight through (but verbosely) | |
57 | # gdb_test "handle SIGALRM print pass nostop" | |
58 | # gdb_test "handle SIGVTALRM print pass nostop" | |
59 | # gdb_test "handle SIGPROF print pass nostop" | |
60 | ||
61 | # Run to the signal handler, validate the backtrace. | |
62 | gdb_test "break handler" | |
63 | gdb_test "continue" ".* handler .*" "continue to stepi handler" | |
5fa290c1 | 64 | gdb_test_sequence "bt" "backtrace for nexti" { |
f0fd9238 AC |
65 | "\[\r\n\]+.0 \[^\r\n\]* handler " |
66 | "\[\r\n\]+.1 .signal handler called." | |
5fa290c1 | 67 | "\[\r\n\]+.2 \[^\r\n\]* main " |
f0fd9238 AC |
68 | } |
69 | ||
70 | proc advance { i } { | |
fda326dd | 71 | global gdb_prompt inferior_exited_re |
b04e311d | 72 | set prefix "$i from handler" |
f0fd9238 AC |
73 | |
74 | # Get us back into the handler | |
b04e311d | 75 | gdb_test "continue" ".* handler .*" "$prefix; continue to handler" |
f0fd9238 | 76 | |
b04e311d | 77 | set test "$prefix; leave handler" |
f0fd9238 | 78 | gdb_test_multiple "$i" "${test}" { |
8608915f | 79 | -re "Could not insert single-step breakpoint.*$gdb_prompt $" { |
bbc8b958 | 80 | setup_kfail gdb/1736 "sparc*-*-openbsd*" |
8608915f MK |
81 | fail "$test (could not insert single-step breakpoint)" |
82 | } | |
f0fd9238 AC |
83 | -re "done = 1;.*${gdb_prompt} $" { |
84 | send_gdb "$i\n" | |
714e341b | 85 | exp_continue -continue_timer |
f0fd9238 AC |
86 | } |
87 | -re "\} .. handler .*${gdb_prompt} $" { | |
88 | send_gdb "$i\n" | |
714e341b | 89 | exp_continue -continue_timer |
f0fd9238 | 90 | } |
fda326dd | 91 | -re "$inferior_exited_re normally.*${gdb_prompt} $" { |
bbc8b958 | 92 | setup_kfail gdb/1639 powerpc-*-*bsd* |
42edda50 | 93 | fail "$test (program exited)" |
61bcae62 | 94 | } |
b04e311d | 95 | -re "(while ..done|done = 0).*${gdb_prompt} $" { |
61bcae62 AC |
96 | # After stepping out of a function /r signal-handler, GDB will |
97 | # advance the inferior until it is at the first instruction of | |
98 | # a code-line. While typically things return to the middle of | |
99 | # the "while..." (and hence GDB advances the inferior to the | |
100 | # "return..." line) it is also possible for the return to land | |
101 | # on the first instruction of "while...". Accept both cases. | |
f0fd9238 AC |
102 | pass "$test" |
103 | } | |
104 | } | |
105 | } | |
106 | ||
107 | proc advancei { i } { | |
fda326dd | 108 | global gdb_prompt inferior_exited_re |
b04e311d | 109 | set prefix "$i from handleri" |
f0fd9238 AC |
110 | set program_exited 0 |
111 | ||
112 | # Get us back into the handler | |
b04e311d | 113 | gdb_test "continue" ".* handler .*" "$prefix; continue to handler" |
f0fd9238 | 114 | |
b04e311d | 115 | set test "$prefix; leave handler" |
f0fd9238 | 116 | gdb_test_multiple "$i" "${test}" { |
04f6ecf2 DJ |
117 | -re "Cannot insert breakpoint 0.*${gdb_prompt} $" { |
118 | # Some platforms use a special read-only page for signal | |
119 | # trampolines. We can't set a breakpoint there, and we | |
120 | # don't gracefully fall back to single-stepping. | |
bbc8b958 TT |
121 | setup_kfail gdb/1736 "i?86-*-linux*" |
122 | setup_kfail gdb/1736 "*-*-openbsd*" | |
04f6ecf2 DJ |
123 | fail "$test (could not set breakpoint)" |
124 | return | |
125 | } | |
8608915f | 126 | -re "Could not insert single-step breakpoint.*$gdb_prompt $" { |
bbc8b958 | 127 | setup_kfail gdb/1736 "sparc*-*-openbsd*" |
8608915f MK |
128 | fail "$test (could not insert single-step breakpoint)" |
129 | } | |
2fa63963 DJ |
130 | -re "Breakpoint \[0-9\]*, handler .*${gdb_prompt} $" { |
131 | fail "$test (hit breakpoint again)" | |
132 | } | |
f0fd9238 AC |
133 | -re "done = 1;.*${gdb_prompt} $" { |
134 | send_gdb "$i\n" | |
714e341b | 135 | exp_continue -continue_timer |
f0fd9238 AC |
136 | } |
137 | -re "\} .. handler .*${gdb_prompt} $" { | |
138 | send_gdb "$i\n" | |
714e341b | 139 | exp_continue -continue_timer |
f0fd9238 AC |
140 | } |
141 | -re "signal handler called.*${gdb_prompt} $" { | |
142 | pass "$test" | |
143 | } | |
f0fd9238 AC |
144 | -re "main .*${gdb_prompt} $" { |
145 | fail "$test (in main)" | |
146 | } | |
fda326dd | 147 | -re "$inferior_exited_re normally.*${gdb_prompt} $" { |
42edda50 AC |
148 | fail "$test (program exited)" |
149 | set program_exited 1 | |
150 | } | |
f0fd9238 AC |
151 | -re "Make handler return now.*y or n. $" { |
152 | send_gdb "y\n" | |
714e341b | 153 | exp_continue -continue_timer |
f0fd9238 AC |
154 | } |
155 | } | |
156 | ||
b04e311d | 157 | set test "$prefix; leave signal trampoline" |
f0fd9238 AC |
158 | gdb_test_multiple "$i" "${test}" { |
159 | -re "while .*${gdb_prompt} $" { | |
160 | pass "$test (in main)" | |
161 | } | |
162 | -re "signal handler called.*${gdb_prompt} $" { | |
163 | send_gdb "$i\n" | |
714e341b | 164 | exp_continue -continue_timer |
f0fd9238 AC |
165 | } |
166 | -re "return .*${gdb_prompt} $" { | |
167 | fail "$test (stepped)" | |
168 | } | |
169 | -re "Make .*frame return now.*y or n. $" { | |
170 | send_gdb "y\n" | |
714e341b | 171 | exp_continue -continue_timer |
f0fd9238 | 172 | } |
fda326dd | 173 | -re "$inferior_exited_re normally.*${gdb_prompt} $" { |
42edda50 AC |
174 | kfail gdb/1639 "$test (program exited)" |
175 | set program_exited 1 | |
176 | } | |
f0fd9238 AC |
177 | -re "The program is not being run.*${gdb_prompt} $" { |
178 | if { $program_exited } { | |
179 | # Previously kfailed with an exit | |
42edda50 | 180 | pass "$test (the program is not being run)" |
f0fd9238 | 181 | } else { |
42edda50 | 182 | fail "$test (the program is not being run)" |
f0fd9238 AC |
183 | } |
184 | } | |
185 | } | |
186 | } | |
187 | ||
b04e311d AC |
188 | # Check that we can step/next our way out of a signal handler. |
189 | ||
f0fd9238 AC |
190 | advance step |
191 | advancei stepi | |
192 | ||
193 | advance next | |
194 | advancei nexti | |
195 | ||
196 | advancei finish | |
197 | advancei return | |
27d3a1a2 | 198 | gdb_test_no_output "set done = 1" "Set done as return will have skipped it" |
b04e311d AC |
199 | |
200 | ||
201 | # Check that we can step/next our way into / over a signal handler. | |
202 | ||
203 | # There are at least the following cases: breakpoint @pc VS breakpoint | |
204 | # in handler VS step / next / continue. | |
205 | ||
206 | # Use the real-time itimer, as otherwize the process never gets enough | |
207 | # time to expire the timer. | |
208 | ||
209 | delete_breakpoints | |
210 | set infinite_loop [gdb_get_line_number {while (!done)}] | |
27d3a1a2 | 211 | gdb_test_no_output "set itimer = itimer_real" |
b04e311d AC |
212 | gdb_test "break [gdb_get_line_number {done = 0}]" |
213 | ||
214 | # Try stepping when there's a signal pending, and a breakpoint at the | |
215 | # handler. Should step into the signal handler. | |
216 | ||
217 | proc skip_to_handler { i } { | |
218 | global gdb_prompt | |
219 | global infinite_loop | |
220 | set prefix "$i to handler" | |
221 | ||
222 | # Run around to the done | |
60fe1a51 | 223 | # You can add more patterns to this if you need them. |
b04e311d AC |
224 | set test "$prefix; resync" |
225 | gdb_test_multiple "continue" "$test" { | |
226 | -re "done = 0.*$gdb_prompt " { | |
227 | pass "$test" | |
228 | } | |
b04e311d AC |
229 | } |
230 | ||
231 | # Advance to the infinite loop | |
27d3a1a2 | 232 | gdb_test "advance $infinite_loop" ".*" "$prefix; advance to infinite loop" |
b04e311d AC |
233 | |
234 | # Make the signal pending | |
235 | sleep 1 | |
236 | ||
237 | # Insert / remove the handler breakpoint. | |
27d3a1a2 | 238 | gdb_test "break handler" ".*" "$prefix; break handler" |
b04e311d | 239 | gdb_test "$i" " handler .*" "$prefix; performing $i" |
27d3a1a2 | 240 | gdb_test "clear handler" ".*" "$prefix; clear handler" |
b04e311d AC |
241 | } |
242 | ||
243 | skip_to_handler step | |
244 | skip_to_handler next | |
245 | skip_to_handler continue | |
246 | ||
2dedb159 AC |
247 | # Try stepping when there's a signal pending, and a breakpoint at the |
248 | # handler's entry-point. Should step into the signal handler stopping | |
249 | # at the entry-point. | |
250 | ||
251 | # Some systems (e.x., GNU/Linux as of 2004-08-30), when delivering a | |
252 | # signal, resume the process at the first instruction of the signal | |
253 | # handler and not the first instruction of the signal trampoline. The | |
254 | # stack is constructed such that the signal handler still appears to | |
255 | # have been called by the trampoline code. This test checks that it | |
256 | # is possible to stop the inferior, even at that first instruction. | |
257 | ||
258 | proc skip_to_handler_entry { i } { | |
259 | global gdb_prompt | |
260 | global infinite_loop | |
261 | set prefix "$i to handler entry" | |
262 | ||
263 | # Run around to the done | |
60fe1a51 | 264 | # You can add more patterns to this if you need them. |
2dedb159 AC |
265 | set test "$prefix; resync" |
266 | gdb_test_multiple "continue" "$test" { | |
267 | -re "done = 0.*$gdb_prompt " { | |
268 | pass "$test" | |
269 | } | |
2dedb159 AC |
270 | } |
271 | ||
272 | # Advance to the infinite loop | |
27d3a1a2 | 273 | gdb_test "advance $infinite_loop" ".*" "$prefix; advance to infinite loop" |
2dedb159 AC |
274 | |
275 | # Make the signal pending | |
276 | sleep 1 | |
277 | ||
278 | # Insert / remove the handler breakpoint. | |
27d3a1a2 | 279 | gdb_test "break *handler" ".*" "$prefix; break handler" |
2dedb159 | 280 | gdb_test "$i" " handler .*" "$prefix; performing $i" |
27d3a1a2 | 281 | gdb_test "clear *handler" ".*" "$prefix; clear handler" |
2dedb159 AC |
282 | } |
283 | ||
284 | skip_to_handler_entry step | |
285 | skip_to_handler_entry next | |
286 | skip_to_handler_entry continue | |
287 | ||
b04e311d AC |
288 | # Try stepping when there's a signal pending but no breakpoints. |
289 | # Should skip the handler advancing to the next line. | |
290 | ||
291 | proc skip_over_handler { i } { | |
292 | global gdb_prompt | |
293 | global infinite_loop | |
294 | set prefix "$i over handler" | |
295 | ||
296 | # Run around to the done | |
60fe1a51 | 297 | # You can add more patterns to this if you need them. |
b04e311d AC |
298 | set test "$prefix; resync" |
299 | gdb_test_multiple "continue" "$test" { | |
300 | -re "done = 0.*$gdb_prompt " { | |
301 | pass "$test" | |
302 | } | |
b04e311d AC |
303 | } |
304 | ||
305 | # Advance to the infinite loop | |
27d3a1a2 | 306 | gdb_test "advance $infinite_loop" ".*" "$prefix; advance to infinite loop" |
b04e311d AC |
307 | |
308 | # Make the signal pending | |
309 | sleep 1 | |
310 | ||
311 | gdb_test "$i" "done = 0.*" "$prefix; performing $i" | |
312 | } | |
313 | ||
314 | skip_over_handler step | |
315 | skip_over_handler next | |
316 | skip_over_handler continue | |
317 | ||
318 | # Try stepping when there's a signal pending, a pre-existing | |
319 | # breakpoint at the current instruction, and a breakpoint in the | |
320 | # handler. Should advance to the signal handler. | |
321 | ||
322 | proc breakpoint_to_handler { i } { | |
323 | global gdb_prompt | |
324 | global infinite_loop | |
325 | set prefix "$i on breakpoint, to handler" | |
326 | ||
327 | # Run around to the done | |
60fe1a51 | 328 | # You can add more patterns to this if you need them. |
b04e311d AC |
329 | set test "$prefix; resync" |
330 | gdb_test_multiple "continue" "$test" { | |
331 | -re "done = 0.*$gdb_prompt " { | |
332 | pass "$test" | |
333 | } | |
b04e311d AC |
334 | } |
335 | ||
27d3a1a2 MS |
336 | gdb_test "break $infinite_loop" ".*" "$prefix; break infinite loop" |
337 | gdb_test "break handler" ".*" "$prefix; break handler" | |
b04e311d AC |
338 | |
339 | # Continue to the infinite loop | |
340 | gdb_test "continue" "while ..done.*" "$prefix; continue to infinite loop" | |
341 | ||
342 | # Make the signal pending | |
343 | sleep 1 | |
344 | ||
b04e311d | 345 | gdb_test "$i" " handler .*" "$prefix; performing $i" |
27d3a1a2 MS |
346 | gdb_test "clear $infinite_loop" ".*" "$prefix; clear infinite loop" |
347 | gdb_test "clear handler" ".*" "$prefix; clear handler" | |
b04e311d AC |
348 | } |
349 | ||
350 | breakpoint_to_handler step | |
351 | breakpoint_to_handler next | |
352 | breakpoint_to_handler continue | |
353 | ||
2dedb159 AC |
354 | # Try stepping when there's a signal pending, and a breakpoint at the |
355 | # handler's entry instruction and a breakpoint at the current | |
356 | # instruction. Should step into the signal handler and breakpoint at | |
357 | # that entry instruction. | |
358 | ||
359 | # Some systems (e.x., GNU/Linux as of 2004-08-30), when delivering a | |
360 | # signal, resume the process at the first instruction of the signal | |
361 | # handler and not the first instruction of the signal trampoline. The | |
362 | # stack is constructed such that the signal handler still appears to | |
363 | # have been called by the trampoline code. This test checks that it | |
364 | # is possible to stop the inferior, even at that first instruction. | |
365 | ||
366 | proc breakpoint_to_handler_entry { i } { | |
367 | global gdb_prompt | |
368 | global infinite_loop | |
369 | set prefix "$i on breakpoint, to handler entry" | |
370 | ||
371 | # Run around to the done | |
60fe1a51 | 372 | # You can add more patterns to this if you need them. |
2dedb159 AC |
373 | set test "$prefix; resync" |
374 | gdb_test_multiple "continue" "$test" { | |
375 | -re "done = 0.*$gdb_prompt " { | |
376 | pass "$test" | |
377 | } | |
2dedb159 AC |
378 | } |
379 | ||
27d3a1a2 MS |
380 | gdb_test "break $infinite_loop" ".*" "$prefix; break infinite loop" |
381 | gdb_test "break *handler" ".*" "$prefix; break handler" | |
2dedb159 AC |
382 | |
383 | # Continue to the infinite loop | |
384 | gdb_test "continue" "while ..done.*" "$prefix; continue to infinite loop" | |
385 | ||
386 | # Make the signal pending | |
387 | sleep 1 | |
388 | ||
2dedb159 | 389 | gdb_test "$i" " handler .*" "$prefix; performing $i" |
27d3a1a2 MS |
390 | gdb_test "clear $infinite_loop" ".*" "$prefix; clear infinite loop" |
391 | gdb_test "clear *handler" ".*" "$prefix; clear handler" | |
2dedb159 AC |
392 | } |
393 | ||
394 | breakpoint_to_handler_entry step | |
395 | breakpoint_to_handler_entry next | |
396 | breakpoint_to_handler_entry continue | |
397 | ||
b04e311d AC |
398 | # Try stepping when there's a signal pending, and a pre-existing |
399 | # breakpoint at the current instruction, and no breakpoint in the | |
400 | # handler. Should advance to the next line. | |
401 | ||
402 | proc breakpoint_over_handler { i } { | |
403 | global gdb_prompt | |
404 | global infinite_loop | |
405 | set prefix "$i on breakpoint, skip handler" | |
406 | ||
407 | # Run around to the done | |
60fe1a51 | 408 | # You can add more patterns to this if you need them. |
b04e311d AC |
409 | set test "$prefix; resync" |
410 | gdb_test_multiple "continue" "$test" { | |
411 | -re "done = 0.*$gdb_prompt " { | |
412 | pass "$test" | |
413 | } | |
b04e311d AC |
414 | } |
415 | ||
27d3a1a2 | 416 | gdb_test "break $infinite_loop" ".*" "$prefix; break infinite loop" |
b04e311d AC |
417 | |
418 | # Continue to the infinite loop | |
419 | gdb_test "continue" "while ..done.*" "$prefix; continue to infinite loop" | |
420 | ||
421 | # Make the signal pending | |
422 | sleep 1 | |
423 | ||
b04e311d | 424 | gdb_test "$i" "done = 0.*" "$prefix; performing $i" |
27d3a1a2 | 425 | gdb_test "clear $infinite_loop" ".*" "$prefix; clear infinite loop" |
b04e311d AC |
426 | } |
427 | ||
428 | breakpoint_over_handler step | |
429 | breakpoint_over_handler next | |
430 | breakpoint_over_handler continue |