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fbbe92c5 SDJ |
1 | # Copyright 1997, 1999, 2007, 2008 Free Software Foundation, Inc. |
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 3 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, see <http://www.gnu.org/licenses/>. | |
15 | ||
16 | ||
17 | # This program tests the 'catch syscall' functionality. | |
18 | # | |
19 | # It was written by Sergio Durigan Junior <sergiodj@linux.vnet.ibm.com> | |
20 | # on September/2008. | |
21 | ||
22 | if { [is_remote target] || ![isnative] } then { | |
23 | continue | |
24 | } | |
25 | ||
26 | set prms_id 0 | |
27 | set bug_id 0 | |
28 | ||
29 | global srcfile | |
30 | set testfile "catch-syscall" | |
31 | set srcfile ${testfile}.c | |
32 | set binfile ${objdir}/${subdir}/${testfile} | |
33 | ||
34 | # All (but the last) syscalls from the example code | |
35 | # They are ordered according to the file, so do not change this. | |
36 | set all_syscalls { "close" "chroot" } | |
37 | set all_syscalls_numbers { } | |
38 | # The last syscall (exit()) does not return, so | |
39 | # we cannot expect the catchpoint to be triggered | |
40 | # twice. It is a special case. | |
41 | set last_syscall "exit_group" | |
42 | ||
43 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
44 | untested catch-syscall.exp | |
45 | return -1 | |
46 | } | |
47 | ||
48 | # Until "catch syscall" is implemented on other targets... | |
49 | if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-linux*"]} then { | |
50 | continue | |
51 | } | |
52 | ||
53 | # This shall be updated whenever 'catch syscall' is implemented | |
54 | # on some architecture. | |
55 | #if { ![istarget "i\[34567\]86-*-linux*"] | |
56 | if { ![istarget "x86_64-*-linux*"] && ![istarget "i\[34567\]86-*-linux*"] | |
57 | && ![istarget "powerpc-*-linux*"] && ![istarget "powerpc64-*-linux*"] } { | |
58 | continue | |
59 | } | |
60 | ||
61 | # Internal procedure used to check if, after issuing a 'catch syscall' | |
62 | # command (without arguments), the 'info breakpoints' command displays | |
63 | # that '"any syscall"' is to be caught. | |
64 | proc check_info_bp_any_syscall {} { | |
65 | global gdb_prompt | |
66 | ||
67 | # Verifying that the catchpoint appears in the 'info breakpoints' | |
68 | # command, but with "<any syscall>". | |
69 | set thistest "catch syscall appears in 'info breakpoints'" | |
70 | gdb_test "info breakpoints" ".*catchpoint.*keep y.*syscall \"<any syscall>\".*" $thistest | |
71 | } | |
72 | ||
73 | # Internal procedure used to check if, after issuing a 'catch syscall X' | |
74 | # command (with arguments), the 'info breakpoints' command displays | |
75 | # that the syscall 'X' is to be caught. | |
76 | proc check_info_bp_specific_syscall { syscall } { | |
77 | global gdb_prompt | |
78 | ||
79 | set thistest "syscall(s) $syscall appears in 'info breakpoints'" | |
80 | gdb_test "info breakpoints" ".*catchpoint.*keep y.*syscall(\[(\]s\[)\])? (.)?${syscall}(.)?.*" $thistest | |
81 | } | |
82 | ||
83 | # Internal procedure used to check if, after issuing a 'catch syscall X' | |
84 | # command (with many arguments), the 'info breakpoints' command displays | |
85 | # that the syscalls 'X' are to be caught. | |
86 | proc check_info_bp_many_syscalls { syscalls } { | |
87 | global gdb_prompt | |
88 | set filter_str "" | |
89 | ||
90 | foreach name $syscalls { | |
91 | set filter_str "${filter_str}${name}, " | |
92 | } | |
93 | ||
94 | set filter_str [ string trimright $filter_str ", " ] | |
95 | ||
96 | set thistest "syscalls $filter_str appears in 'info breakpoints'" | |
97 | gdb_test "info breakpoints" ".*catchpoint.*keep y.*syscalls (.)?${filter_str}(.)?.*" $thistest | |
98 | } | |
99 | ||
100 | # This procedure checks if there was a call to a syscall. | |
101 | proc check_call_to_syscall { syscall } { | |
102 | global gdb_prompt | |
103 | ||
104 | set thistest "program has called $syscall" | |
105 | gdb_test "continue" "Catchpoint .*(call to syscall .?${syscall}.?).*" $thistest | |
106 | } | |
107 | ||
108 | # This procedure checks if the syscall returned. | |
109 | proc check_return_from_syscall { syscall } { | |
110 | global gdb_prompt | |
111 | ||
112 | set thistest "syscall $syscall has returned" | |
113 | gdb_test "continue" "Catchpoint .*(returned from syscall (.)?${syscall}(.)?).*" $thistest | |
114 | } | |
115 | ||
116 | # Internal procedure that performs two 'continue' commands and checks if | |
117 | # a syscall call AND return occur. | |
118 | proc check_continue { syscall } { | |
119 | global gdb_prompt | |
120 | ||
121 | # Testing if the 'continue' stops at the | |
122 | # specified syscall_name. If it does, then it should | |
123 | # first print that the infeior has called the syscall, | |
124 | # and after print that the syscall has returned. | |
125 | ||
126 | # Testing if the inferiorr has called the syscall. | |
127 | check_call_to_syscall $syscall | |
128 | # And now, that the syscall has returned. | |
129 | check_return_from_syscall $syscall | |
130 | } | |
131 | ||
132 | # Inserts a syscall catchpoint with an argument. | |
133 | proc insert_catch_syscall_with_arg { syscall } { | |
134 | global gdb_prompt | |
135 | ||
136 | # Trying to set the catchpoint | |
137 | set thistest "catch syscall with arguments ($syscall)" | |
138 | gdb_test "catch syscall $syscall" "Catchpoint .*(syscall (.)?${syscall}(.)?( \[\[0-9\]+\])?).*" $thistest | |
139 | ||
140 | check_info_bp_specific_syscall $syscall | |
141 | } | |
142 | ||
143 | # Inserts a syscall catchpoint with many arguments. | |
144 | proc insert_catch_syscall_with_many_args { syscalls numbers } { | |
145 | global gdb_prompt | |
146 | set catch [ join $syscalls " " ] | |
147 | set filter_str "" | |
148 | ||
149 | foreach name $syscalls number $numbers { | |
150 | set filter_str "${filter_str}'${name}' \[${number}\] " | |
151 | } | |
152 | ||
153 | set filter_str [ string trimright $filter_str " " ] | |
154 | ||
155 | # Trying to set the catchpoint | |
156 | set thistest "catch syscall with arguments ($filter_str)" | |
157 | gdb_test "catch syscall $catch" "Catchpoint .*(syscalls (.)?${filter_str}(.)?).*" $thistest | |
158 | ||
159 | check_info_bp_many_syscalls $syscalls | |
160 | } | |
161 | ||
162 | proc check_for_program_end {} { | |
163 | global gdb_prompt | |
164 | ||
165 | # Deleting the catchpoints | |
166 | delete_breakpoints | |
167 | ||
168 | set thistest "successful program end" | |
169 | gdb_test "continue" "Program exited normally.*" $thistest | |
170 | ||
171 | } | |
172 | ||
173 | proc test_catch_syscall_without_args {} { | |
174 | global gdb_prompt all_syscalls last_syscall | |
175 | ||
176 | # Trying to set the syscall | |
177 | set thistest "setting catch syscall without arguments" | |
178 | gdb_test "catch syscall" "Catchpoint .*(syscall).*" $thistest | |
179 | ||
180 | check_info_bp_any_syscall | |
181 | ||
182 | # We have to check every syscall | |
183 | foreach name $all_syscalls { | |
184 | check_continue $name | |
185 | } | |
186 | ||
187 | # At last but not least, we check if the inferior | |
188 | # has called the last (exit) syscall. | |
189 | check_call_to_syscall $last_syscall | |
190 | ||
191 | # Now let's see if the inferior correctly finishes. | |
192 | check_for_program_end | |
193 | } | |
194 | ||
195 | proc test_catch_syscall_with_args {} { | |
196 | global gdb_prompt | |
197 | set syscall_name "close" | |
198 | ||
199 | insert_catch_syscall_with_arg $syscall_name | |
200 | ||
201 | # Can we continue until we catch the syscall? | |
202 | check_continue $syscall_name | |
203 | ||
204 | # Now let's see if the inferior correctly finishes. | |
205 | check_for_program_end | |
206 | } | |
207 | ||
208 | proc test_catch_syscall_with_many_args {} { | |
209 | global gdb_prompt all_syscalls all_syscalls_numbers | |
210 | ||
211 | insert_catch_syscall_with_many_args $all_syscalls $all_syscalls_numbers | |
212 | ||
213 | # Can we continue until we catch the syscalls? | |
214 | foreach name $all_syscalls { | |
215 | check_continue $name | |
216 | } | |
217 | ||
218 | # Now let's see if the inferior correctly finishes. | |
219 | check_for_program_end | |
220 | } | |
221 | ||
222 | proc test_catch_syscall_with_wrong_args {} { | |
223 | global gdb_prompt | |
224 | # mlock is not called from the source | |
225 | set syscall_name "mlock" | |
226 | ||
227 | insert_catch_syscall_with_arg $syscall_name | |
228 | ||
229 | # Now, we must verify if the program stops with a continue. | |
230 | # If it doesn't, everything is right (since we don't have | |
231 | # a syscall named "mlock" in it). Otherwise, this is a failure. | |
232 | set thistest "catch syscall with unused syscall ($syscall_name)" | |
233 | gdb_test "continue" "Program exited normally.*" $thistest | |
234 | } | |
235 | ||
236 | proc test_catch_syscall_restarting_inferior {} { | |
237 | global gdb_prompt | |
238 | set syscall_name "chroot" | |
239 | ||
240 | insert_catch_syscall_with_arg $syscall_name | |
241 | ||
242 | # Let's first reach the call of the syscall. | |
243 | check_call_to_syscall $syscall_name | |
244 | ||
245 | # Now, restart the program | |
246 | rerun_to_main | |
247 | ||
248 | # And check for call/return | |
249 | check_continue $syscall_name | |
250 | ||
251 | # Can we finish? | |
252 | check_for_program_end | |
253 | } | |
254 | ||
255 | proc do_syscall_tests {} { | |
256 | global gdb_prompt srcdir | |
257 | ||
258 | # First, we need to set GDB datadir. | |
259 | send_gdb "set data-directory $srcdir/..\n" | |
260 | gdb_expect 10 { | |
261 | -re "$gdb_prompt $" { | |
262 | verbose "Setting GDB datadir to $srcdir/..." 2 | |
263 | } | |
264 | timeout { | |
265 | error "Couldn't set GDB datadir." | |
266 | } | |
267 | } | |
268 | ||
269 | # Verify that the 'catch syscall' help is available | |
270 | set thistest "help catch syscall" | |
271 | gdb_test "help catch syscall" "Catch system calls.*" $thistest | |
272 | ||
273 | # Try to set a catchpoint to a nonsense syscall | |
274 | set thistest "catch syscall to a nonsense syscall is prohibited" | |
275 | gdb_test "catch syscall nonsense_syscall" "Unknown syscall name .*" $thistest | |
276 | ||
277 | # Testing the 'catch syscall' command without arguments. | |
278 | # This test should catch any syscalls. | |
279 | if [runto_main] then { test_catch_syscall_without_args } | |
280 | ||
281 | # Testing the 'catch syscall' command with arguments. | |
282 | # This test should only catch the specified syscall. | |
283 | if [runto_main] then { test_catch_syscall_with_args } | |
284 | ||
285 | # Testing the 'catch syscall' command with many arguments. | |
286 | # This test should catch $all_syscalls. | |
287 | if [runto_main] then { test_catch_syscall_with_many_args } | |
288 | ||
289 | # Testing the 'catch syscall' command with WRONG arguments. | |
290 | # This test should not trigger any catchpoints. | |
291 | if [runto_main] then { test_catch_syscall_with_wrong_args } | |
292 | ||
293 | # Testing the 'catch' syscall command during a restart of | |
294 | # the inferior. | |
295 | if [runto_main] then { test_catch_syscall_restarting_inferior } | |
296 | } | |
297 | ||
298 | proc test_catch_syscall_fail_noxml {} { | |
299 | global gdb_prompt | |
300 | ||
301 | # Sanitizing. | |
302 | delete_breakpoints | |
303 | ||
304 | # Testing to see if we receive a warning when calling "catch syscall" | |
305 | # without XML support. | |
306 | set thistest "Catch syscall displays a warning when there is no XML support" | |
307 | gdb_test "catch syscall" "warning: Could not open .*warning: Could not load the syscall XML file .*GDB will not be able to display syscall names.*Catchpoint .*(syscall).*" $thistest | |
308 | ||
309 | # Since the catchpoint was set, we must check if it's present at | |
310 | # "info breakpoints" | |
311 | check_info_bp_any_syscall | |
312 | ||
313 | # Sanitizing. | |
314 | delete_breakpoints | |
315 | } | |
316 | ||
317 | proc test_catch_syscall_without_args_noxml {} { | |
318 | # We will need the syscall names even not using it | |
319 | # because we need to know know many syscalls are in | |
320 | # the example file. | |
321 | global gdb_prompt all_syscalls last_syscall | |
322 | ||
323 | delete_breakpoints | |
324 | ||
325 | set thistest "Catch syscall without arguments and without XML support" | |
326 | gdb_test "catch syscall" "Catchpoint .*(syscall).*" | |
327 | ||
328 | # Now, we should be able to set a catchpoint, | |
329 | # and GDB shall not display the warning anymore. | |
330 | foreach name $all_syscalls { | |
331 | # Unfortunately, we don't know the syscall number | |
332 | # that will be caught because this information is | |
333 | # arch-dependent. Thus, we try to catch anything | |
334 | # similar to a number. | |
335 | check_continue "\[0-9\]*" | |
336 | } | |
337 | ||
338 | # At last but not least, we check if the inferior | |
339 | # has called the last (exit) syscall. | |
340 | check_call_to_syscall "\[0-9\]*" | |
341 | ||
342 | delete_breakpoints | |
343 | } | |
344 | ||
345 | proc test_catch_syscall_with_args_noxml {} { | |
346 | global gdb_prompt | |
347 | ||
348 | # The number of the "close" syscall. This is our | |
349 | # option for a "long-estabilished" syscall in all | |
350 | # Linux architectures, but unfortunately x86_64 and | |
351 | # a few other platforms don't "follow the convention". | |
352 | # Because of this, we need this ugly check :-(. | |
353 | set close_number "" | |
354 | if { [istarget "x86_64-*-linux*"] } { | |
355 | set close_number "3" | |
356 | } else { | |
357 | set close_number "6" | |
358 | } | |
359 | ||
360 | delete_breakpoints | |
361 | ||
362 | insert_catch_syscall_with_arg $close_number | |
363 | ||
364 | check_continue $close_number | |
365 | ||
366 | delete_breakpoints | |
367 | } | |
368 | ||
369 | proc test_catch_syscall_with_wrong_args_noxml {} { | |
370 | global gdb_prompt | |
371 | ||
372 | delete_breakpoints | |
373 | ||
374 | # Even without XML support, GDB should not accept unknown | |
375 | # syscall names for the catchpoint. | |
376 | set thistest "Catch a nonsense syscall without XML support" | |
377 | gdb_test "catch syscall nonsense_syscall" "Unknown syscall name .nonsense_syscall.*" $thistest | |
378 | ||
379 | delete_breakpoints | |
380 | } | |
381 | ||
382 | proc do_syscall_tests_without_xml {} { | |
383 | global gdb_prompt srcdir | |
384 | ||
385 | # In this case, we don't need to set GDB's datadir because | |
386 | # we want GDB to display only numbers, not names. So, let's | |
387 | # begin with the tests. | |
388 | ||
389 | # The first test is to see if GDB displays a warning when we | |
390 | # try to catch syscalls without the XML support. | |
391 | test_catch_syscall_fail_noxml | |
392 | ||
393 | # Now, let's test if we can catch syscalls without XML support. | |
394 | # We should succeed, but GDB is not supposed to print syscall names. | |
395 | if [runto_main] then { test_catch_syscall_without_args_noxml } | |
396 | ||
397 | # The only valid argument "catch syscall" should accept is the | |
398 | # syscall number, and not the name (since it can't translate a | |
399 | # name to a number). | |
400 | # | |
401 | # It's worth mentioning that we only try to catch the syscall | |
402 | # close(). This is because the syscall number is an arch-dependent | |
403 | # information, so we can't assume that we know every syscall number | |
404 | # in this system. Therefore, we have decided to use a "long-estabilished" | |
405 | # system call, and close() just sounded the right choice :-). | |
406 | if [runto_main] then { test_catch_syscall_with_args_noxml } | |
407 | ||
408 | # Now, we'll try to provide a syscall name (valid or not) to the command, | |
409 | # and expect it to fail. | |
410 | if [runto_main] then { test_catch_syscall_with_wrong_args_noxml } | |
411 | } | |
412 | ||
413 | # This procedure fills the vector "all_syscalls_numbers" with the proper | |
414 | # numbers for the used syscalls according to the architecture. | |
415 | proc fill_all_syscalls_numbers {} { | |
416 | global all_syscalls_numbers | |
417 | ||
418 | # For Linux on x86, PPC and PPC64, the numbers for the syscalls "close" and | |
419 | # "chroot" are the same. | |
420 | if { ![istarget "i\[34567\]86-*-linux*"] | |
421 | || ![istarget "powerpc-*-linux*"] || ![istarget "powerpc64-*-linux*"] } { | |
422 | set all_syscalls_numbers { "6" "61" } | |
423 | } | |
424 | } | |
425 | ||
426 | # Start with a fresh gdb | |
427 | ||
428 | gdb_exit | |
429 | gdb_start | |
430 | gdb_reinitialize_dir $srcdir/$subdir | |
431 | gdb_load ${binfile} | |
432 | ||
433 | # Execute the tests, using XML support | |
434 | do_syscall_tests | |
435 | ||
436 | # Restart gdb | |
437 | ||
438 | gdb_exit | |
439 | gdb_start | |
440 | gdb_reinitialize_dir $srcdir/$subdir | |
441 | gdb_load ${binfile} | |
442 | ||
443 | # Execute the tests, without XML support. In this case, GDB will | |
444 | # only display syscall numbers, and not syscall names. | |
445 | do_syscall_tests_without_xml |