]>
Commit | Line | Data |
---|---|---|
618f726f | 1 | # Copyright 1997-2016 Free Software Foundation, Inc. |
74cf1395 JM |
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 | |
e22f8b7c | 5 | # the Free Software Foundation; either version 3 of the License, or |
74cf1395 | 6 | # (at your option) any later version. |
e22f8b7c | 7 | # |
74cf1395 JM |
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. | |
e22f8b7c | 12 | # |
74cf1395 | 13 | # You should have received a copy of the GNU General Public License |
e85a822c | 14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
74cf1395 | 15 | |
71ce889d PA |
16 | # Various tests of gdb's ability to follow the parent or child of a |
17 | # Unix vfork system call. A vfork parent is blocked until the child | |
18 | # either execs or exits --- since those events take somewhat different | |
19 | # code paths in GDB, both variants are exercised. | |
20 | ||
2d4e0376 YQ |
21 | # Until "set follow-fork-mode" and "catch vfork" are implemented on |
22 | # other targets... | |
23 | # | |
3ca22649 | 24 | if {![istarget "*-linux*"]} then { |
2d4e0376 YQ |
25 | continue |
26 | } | |
27 | ||
771bc0af | 28 | standard_testfile |
74cf1395 | 29 | |
3fef966c TT |
30 | set compile_options debug |
31 | set dirname [relative_filename [pwd] [file dirname $binfile]] | |
32 | lappend compile_options "additional_flags=-DBASEDIR=\"$dirname\"" | |
33 | ||
34 | if {[build_executable $testfile.exp $testfile $srcfile $compile_options] == -1} { | |
771bc0af PA |
35 | untested "failed to compile $testfile" |
36 | return -1 | |
74cf1395 JM |
37 | } |
38 | ||
771bc0af PA |
39 | set testfile2 "vforked-prog" |
40 | set srcfile2 ${testfile2}.c | |
41 | ||
3fef966c | 42 | if {[build_executable $testfile.exp $testfile2 $srcfile2 $compile_options] == -1} { |
771bc0af PA |
43 | untested "failed to compile $testfile2" |
44 | return -1 | |
74cf1395 JM |
45 | } |
46 | ||
74cf1395 JM |
47 | # A few of these tests require a little more time than the standard |
48 | # timeout allows. | |
49 | set oldtimeout $timeout | |
50 | set timeout [expr "$timeout + 10"] | |
51 | ||
39c1263a PA |
52 | # Start with a fresh GDB, with verbosity enabled, and run to main. On |
53 | # error, behave as "return", so we don't try to continue testing with | |
54 | # a borked session. | |
55 | proc setup_gdb {} { | |
56 | global testfile | |
57 | ||
58 | clean_restart $testfile | |
59 | ||
60 | # The "Detaching..." and "Attaching..." messages may be hidden by | |
61 | # default. | |
62 | gdb_test_no_output "set verbose" | |
63 | ||
64 | if ![runto_main] { | |
65 | return -code return | |
66 | } | |
67 | } | |
68 | ||
e85a822c DJ |
69 | proc check_vfork_catchpoints {} { |
70 | global gdb_prompt | |
71 | global has_vfork_catchpoints | |
72 | ||
39c1263a PA |
73 | setup_gdb |
74 | ||
e85a822c DJ |
75 | # Verify that the system supports "catch vfork". |
76 | gdb_test "catch vfork" "Catchpoint \[0-9\]* \\(vfork\\)" "insert first vfork catchpoint" | |
77 | set has_vfork_catchpoints 0 | |
78 | gdb_test_multiple "continue" "continue to first vfork catchpoint" { | |
77b06cd7 | 79 | -re ".*Your system does not support this type\r\nof catchpoint.*$gdb_prompt $" { |
e85a822c DJ |
80 | unsupported "continue to first vfork catchpoint" |
81 | } | |
82 | -re ".*Catchpoint.*$gdb_prompt $" { | |
83 | set has_vfork_catchpoints 1 | |
84 | pass "continue to first vfork catchpoint" | |
85 | } | |
86 | } | |
87 | ||
88 | if {$has_vfork_catchpoints == 0} { | |
89 | unsupported "vfork catchpoints" | |
90 | return -code return | |
91 | } | |
92 | } | |
93 | ||
74cf1395 | 94 | proc vfork_parent_follow_through_step {} { |
339aeac6 | 95 | with_test_prefix "vfork parent follow, through step" { |
74cf1395 JM |
96 | global gdb_prompt |
97 | ||
39c1263a PA |
98 | setup_gdb |
99 | ||
339aeac6 | 100 | gdb_test_no_output "set follow-fork parent" |
771bc0af | 101 | |
339aeac6 | 102 | set test "step" |
771bc0af | 103 | gdb_test_multiple "next" $test { |
6f259a23 | 104 | -re "Detaching after vfork from.*if \\(pid == 0\\).*$gdb_prompt " { |
339aeac6 | 105 | pass $test |
771bc0af | 106 | } |
74cf1395 JM |
107 | } |
108 | # The child has been detached; allow time for any output it might | |
109 | # generate to arrive, so that output doesn't get confused with | |
110 | # any gdb_expected debugger output from a subsequent testpoint. | |
111 | # | |
112 | exec sleep 1 | |
339aeac6 | 113 | }} |
74cf1395 JM |
114 | |
115 | proc vfork_parent_follow_to_bp {} { | |
339aeac6 | 116 | with_test_prefix "vfork parent follow, to bp" { |
74cf1395 | 117 | global gdb_prompt |
e85a822c | 118 | global srcfile |
74cf1395 | 119 | |
39c1263a PA |
120 | setup_gdb |
121 | ||
339aeac6 | 122 | gdb_test_no_output "set follow-fork parent" |
771bc0af | 123 | |
43ae8f01 PA |
124 | set bp_location [gdb_get_line_number "printf (\"I'm the proud parent of child"] |
125 | gdb_test "break ${srcfile}:${bp_location}" ".*" "break, vfork to bp" | |
771bc0af | 126 | |
339aeac6 | 127 | set test "continue to bp" |
771bc0af | 128 | gdb_test_multiple "continue" $test { |
6f259a23 | 129 | -re ".*Detaching after vfork from child process.*Breakpoint.*${bp_location}.*$gdb_prompt " { |
771bc0af PA |
130 | pass $test |
131 | } | |
74cf1395 JM |
132 | } |
133 | # The child has been detached; allow time for any output it might | |
134 | # generate to arrive, so that output doesn't get confused with | |
135 | # any expected debugger output from a subsequent testpoint. | |
136 | # | |
137 | exec sleep 1 | |
339aeac6 | 138 | }} |
74cf1395 | 139 | |
71ce889d PA |
140 | proc vfork_child_follow_to_exit {} { |
141 | with_test_prefix "vfork child follow, to exit" { | |
142 | global gdb_prompt | |
143 | ||
144 | setup_gdb | |
145 | ||
146 | gdb_test_no_output "set follow-fork child" | |
147 | ||
148 | set test "continue to child exit" | |
149 | gdb_test_multiple "continue" $test { | |
150 | -re "Couldn't get registers.*$gdb_prompt " { | |
f50f4e56 | 151 | # PR gdb/14766 |
71ce889d PA |
152 | fail "$test" |
153 | } | |
154 | -re "Attaching after.* vfork to.*Detaching vfork parent .* after child exit.*$gdb_prompt " { | |
155 | pass $test | |
156 | } | |
157 | } | |
158 | # The parent has been detached; allow time for any output it might | |
159 | # generate to arrive, so that output doesn't get confused with | |
160 | # any gdb_expected debugger output from a subsequent testpoint. | |
161 | # | |
162 | exec sleep 1 | |
163 | }} | |
164 | ||
74cf1395 | 165 | proc vfork_and_exec_child_follow_to_main_bp {} { |
339aeac6 | 166 | with_test_prefix "vfork and exec child follow, to main bp" { |
74cf1395 | 167 | global gdb_prompt |
43ae8f01 | 168 | global srcfile2 |
74cf1395 | 169 | |
39c1263a PA |
170 | setup_gdb |
171 | ||
339aeac6 | 172 | gdb_test_no_output "set follow-fork child" |
771bc0af | 173 | |
43ae8f01 PA |
174 | set linenum [gdb_get_line_number "printf(\"Hello from vforked-prog" ${srcfile2}] |
175 | ||
339aeac6 | 176 | set test "continue to bp" |
771bc0af | 177 | gdb_test_multiple "continue" $test { |
6f259a23 | 178 | -re "Attaching after.* vfork to.*Detaching vfork parent.*xecuting new program.*Breakpoint.*vforked-prog.c:${linenum}.*$gdb_prompt " { |
771bc0af PA |
179 | pass $test |
180 | } | |
74cf1395 JM |
181 | } |
182 | # The parent has been detached; allow time for any output it might | |
183 | # generate to arrive, so that output doesn't get confused with | |
184 | # any gdb_expected debugger output from a subsequent testpoint. | |
185 | # | |
186 | exec sleep 1 | |
339aeac6 | 187 | }} |
74cf1395 JM |
188 | |
189 | proc vfork_and_exec_child_follow_through_step {} { | |
339aeac6 | 190 | with_test_prefix "vfork and exec child follow, through step" { |
74cf1395 | 191 | global gdb_prompt |
43ae8f01 | 192 | global srcfile2 |
74cf1395 | 193 | |
39c1263a PA |
194 | setup_gdb |
195 | ||
339aeac6 | 196 | gdb_test_no_output "set follow-fork child" |
771bc0af | 197 | |
339aeac6 | 198 | set test "step over vfork" |
3ca22649 SM |
199 | |
200 | # The ideal support is to be able to debug the child even | |
201 | # before it execs. Thus, "next" lands on the next line after | |
202 | # the vfork. | |
203 | gdb_test_multiple "next" $test { | |
204 | -re "Attaching after .* vfork to child.*if \\(pid == 0\\).*$gdb_prompt " { | |
205 | pass "$test" | |
6dbc8997 | 206 | } |
74cf1395 JM |
207 | } |
208 | # The parent has been detached; allow time for any output it might | |
209 | # generate to arrive, so that output doesn't get confused with | |
210 | # any expected debugger output from a subsequent testpoint. | |
211 | # | |
212 | exec sleep 1 | |
339aeac6 | 213 | }} |
74cf1395 JM |
214 | |
215 | proc tcatch_vfork_then_parent_follow {} { | |
339aeac6 | 216 | with_test_prefix "vfork parent follow, finish after tcatch vfork" { |
74cf1395 JM |
217 | global gdb_prompt |
218 | global srcfile | |
219 | ||
39c1263a PA |
220 | setup_gdb |
221 | ||
339aeac6 | 222 | gdb_test_no_output "set follow-fork parent" |
771bc0af | 223 | |
339aeac6 | 224 | gdb_test "tcatch vfork" "Catchpoint .*(vfork).*" |
fe33faff SM |
225 | gdb_test "continue" "0x\[0-9a-fA-F\]*.*(vfork|__kernel_v?syscall).*" \ |
226 | "continue to vfork" | |
771bc0af | 227 | |
43ae8f01 | 228 | set linenum [gdb_get_line_number "pid = vfork ();"] |
339aeac6 | 229 | set test "finish" |
771bc0af | 230 | gdb_test_multiple "finish" $test { |
43ae8f01 | 231 | -re "Run till exit from.*vfork.*0x\[0-9a-fA-F\]* in main .* at .*${srcfile}:${linenum}.*$gdb_prompt " { |
771bc0af PA |
232 | pass $test |
233 | } | |
a9c64011 AS |
234 | -re "Run till exit from.*__kernel_v?syscall.*0x\[0-9a-fA-F\]* in vfork .*$gdb_prompt " { |
235 | send_gdb "finish\n" | |
236 | exp_continue | |
237 | } | |
74cf1395 JM |
238 | } |
239 | # The child has been detached; allow time for any output it might | |
240 | # generate to arrive, so that output doesn't get confused with | |
241 | # any expected debugger output from a subsequent testpoint. | |
242 | # | |
243 | exec sleep 1 | |
339aeac6 | 244 | }} |
74cf1395 | 245 | |
71ce889d | 246 | proc tcatch_vfork_then_child_follow_exec {} { |
339aeac6 | 247 | with_test_prefix "vfork child follow, finish after tcatch vfork" { |
74cf1395 | 248 | global gdb_prompt |
e85a822c | 249 | global srcfile |
74cf1395 JM |
250 | global srcfile2 |
251 | ||
39c1263a PA |
252 | setup_gdb |
253 | ||
339aeac6 | 254 | gdb_test_no_output "set follow-fork child" |
771bc0af | 255 | |
339aeac6 | 256 | gdb_test "tcatch vfork" "Catchpoint .*(vfork).*" |
fe33faff SM |
257 | gdb_test "continue" "0x\[0-9a-fA-F\]*.*(vfork|__kernel_v?syscall).*" \ |
258 | "continue to vfork" | |
771bc0af | 259 | |
43ae8f01 PA |
260 | set linenum1 [gdb_get_line_number "pid = vfork ();"] |
261 | set linenum2 [gdb_get_line_number "printf(\"Hello from vforked-prog" ${srcfile2}] | |
262 | ||
339aeac6 | 263 | set test "finish" |
771bc0af | 264 | gdb_test_multiple "finish" $test { |
43ae8f01 | 265 | -re "Run till exit from.*vfork.*${srcfile}:${linenum1}.*$gdb_prompt " { |
771bc0af PA |
266 | pass $test |
267 | } | |
a9c64011 AS |
268 | -re "Run till exit from.*__kernel_v?syscall.*0x\[0-9a-fA-F\]* in vfork .*$gdb_prompt " { |
269 | send_gdb "finish\n" | |
270 | exp_continue | |
271 | } | |
43ae8f01 | 272 | -re "Run till exit from.*vfork.*${srcfile2}:${linenum2}.*$gdb_prompt " { |
771bc0af PA |
273 | pass "$test (followed exec)" |
274 | } | |
74cf1395 JM |
275 | } |
276 | # The parent has been detached; allow time for any output it might | |
277 | # generate to arrive, so that output doesn't get confused with | |
278 | # any expected debugger output from a subsequent testpoint. | |
279 | # | |
280 | exec sleep 1 | |
339aeac6 | 281 | }} |
74cf1395 | 282 | |
71ce889d PA |
283 | proc tcatch_vfork_then_child_follow_exit {} { |
284 | with_test_prefix "vfork child follow, finish after tcatch vfork" { | |
74cf1395 | 285 | global gdb_prompt |
71ce889d PA |
286 | global srcfile |
287 | ||
288 | setup_gdb | |
289 | ||
290 | gdb_test_no_output "set follow-fork child" | |
291 | ||
292 | gdb_test "tcatch vfork" "Catchpoint .*(vfork).*" | |
fe33faff SM |
293 | gdb_test "continue" "0x\[0-9a-fA-F\]*.*(vfork|__kernel_v?syscall).*" \ |
294 | "continue to vfork" | |
71ce889d PA |
295 | |
296 | set test "finish" | |
297 | gdb_test_multiple "finish" $test { | |
71ce889d PA |
298 | -re "Run till exit from.*vfork.*exited normally.*$gdb_prompt " { |
299 | setup_kfail "gdb/14762" *-*-* | |
300 | fail $test | |
301 | } | |
302 | -re "Run till exit from.*vfork.*pid = vfork \\(\\).*$gdb_prompt " { | |
303 | pass $test | |
304 | } | |
305 | -re "Run till exit from.*__kernel_v?syscall.*0x\[0-9a-fA-F\]* in vfork .*$gdb_prompt " { | |
306 | send_gdb "finish\n" | |
307 | exp_continue | |
308 | } | |
309 | } | |
310 | # The parent has been detached; allow time for any output it might | |
311 | # generate to arrive, so that output doesn't get confused with | |
312 | # any expected debugger output from a subsequent testpoint. | |
313 | # | |
314 | exec sleep 1 | |
315 | }} | |
74cf1395 | 316 | |
68c9da30 PA |
317 | proc vfork_relations_in_info_inferiors { variant } { |
318 | with_test_prefix "vfork relations in info inferiors" { | |
319 | global gdb_prompt | |
320 | ||
321 | setup_gdb | |
322 | ||
323 | gdb_test_no_output "set follow-fork child" | |
324 | ||
325 | set test "step over vfork" | |
326 | gdb_test_multiple "next" $test { | |
327 | -re "Attaching after .* vfork to child.*if \\(pid == 0\\).*$gdb_prompt " { | |
328 | pass "$test" | |
329 | } | |
330 | } | |
331 | ||
332 | gdb_test "info inferiors" \ | |
7e0aa6aa | 333 | ".*is vfork parent of inferior 2.*is vfork child of inferior 1" \ |
68c9da30 PA |
334 | "info inferiors shows vfork parent/child relation" |
335 | ||
336 | if { $variant == "exec" } { | |
337 | global srcfile2 | |
338 | ||
339 | set linenum [gdb_get_line_number "printf(\"Hello from vforked-prog" ${srcfile2}] | |
340 | set test "continue to bp" | |
341 | gdb_test_multiple "continue" $test { | |
342 | -re ".*xecuting new program.*Breakpoint.*vforked-prog.c:${linenum}.*$gdb_prompt " { | |
343 | pass $test | |
344 | } | |
345 | } | |
346 | } else { | |
347 | set test "continue to child exit" | |
348 | gdb_test_multiple "continue" $test { | |
349 | -re "exited normally.*$gdb_prompt " { | |
350 | pass $test | |
351 | } | |
352 | } | |
353 | } | |
354 | ||
355 | set test "vfork relation no longer appears in info inferiors" | |
356 | gdb_test_multiple "info inferiors" $test { | |
357 | -re "is vfork child of inferior 1.*$gdb_prompt $" { | |
358 | fail $test | |
359 | } | |
360 | -re "is vfork parent of inferior 2.*$gdb_prompt $" { | |
361 | fail $test | |
362 | } | |
363 | -re "$gdb_prompt $" { | |
364 | pass $test | |
365 | } | |
366 | } | |
367 | }} | |
368 | ||
71ce889d PA |
369 | proc do_vfork_and_follow_parent_tests {} { |
370 | global gdb_prompt | |
e85a822c | 371 | |
74cf1395 JM |
372 | # Try following the parent process by stepping through a call to |
373 | # vfork. Do this without catchpoints. | |
39c1263a | 374 | vfork_parent_follow_through_step |
74cf1395 JM |
375 | |
376 | # Try following the parent process by setting a breakpoint on the | |
377 | # other side of a vfork, and running to that point. Do this | |
378 | # without catchpoints. | |
39c1263a | 379 | vfork_parent_follow_to_bp |
74cf1395 | 380 | |
71ce889d PA |
381 | # Try catching a vfork, and stepping out to the parent. |
382 | # | |
383 | tcatch_vfork_then_parent_follow | |
384 | } | |
385 | ||
386 | proc do_vfork_and_follow_child_tests_exec {} { | |
74cf1395 JM |
387 | # Try following the child process by just continuing through the |
388 | # vfork, and letting the parent's breakpoint on "main" be auto- | |
389 | # magically reset in the child. | |
390 | # | |
39c1263a | 391 | vfork_and_exec_child_follow_to_main_bp |
74cf1395 JM |
392 | |
393 | # Try following the child process by stepping through a call to | |
394 | # vfork. The child also executes an exec. Since the child cannot | |
395 | # be debugged until after it has exec'd, and since there's a bp on | |
396 | # "main" in the parent, and since the bp's for the parent are | |
397 | # recomputed in the exec'd child, the step through a vfork should | |
398 | # land us in the "main" for the exec'd child, too. | |
399 | # | |
39c1263a | 400 | vfork_and_exec_child_follow_through_step |
74cf1395 | 401 | |
74cf1395 JM |
402 | # Try catching a vfork, and stepping out to the child. |
403 | # | |
71ce889d | 404 | tcatch_vfork_then_child_follow_exec |
74cf1395 JM |
405 | |
406 | # Test the ability to follow both child and parent of a vfork. Do | |
407 | # this without catchpoints. | |
408 | # ??rehrauer: NYI. Will add testpoints here when implemented. | |
409 | # | |
410 | ||
411 | # Test the ability to have the debugger ask the user at vfork-time | |
412 | # whether to follow the parent, child or both. Do this without | |
413 | # catchpoints. | |
414 | # ??rehrauer: NYI. Will add testpoints here when implemented. | |
415 | # | |
68c9da30 PA |
416 | |
417 | # Step over a vfork in the child, do "info inferiors" and check the | |
418 | # parent/child relation is displayed. Run the child over the exec, | |
419 | # and confirm the relation is no longer displayed in "info | |
420 | # inferiors". | |
421 | # | |
422 | vfork_relations_in_info_inferiors "exec" | |
74cf1395 JM |
423 | } |
424 | ||
71ce889d PA |
425 | proc do_vfork_and_follow_child_tests_exit {} { |
426 | # Try following the child process by just continuing through the | |
427 | # vfork, and letting the child exit. | |
428 | # | |
429 | vfork_child_follow_to_exit | |
430 | ||
431 | # Try catching a vfork, and stepping out to the child. | |
432 | # | |
433 | tcatch_vfork_then_child_follow_exit | |
68c9da30 PA |
434 | |
435 | # Step over a vfork in the child, do "info inferiors" and check the | |
436 | # parent/child relation is displayed. Run the child to completion, | |
437 | # and confirm the relation is no longer displayed in "info | |
438 | # inferiors". | |
439 | # | |
440 | vfork_relations_in_info_inferiors "exit" | |
71ce889d PA |
441 | } |
442 | ||
443 | with_test_prefix "check vfork support" { | |
444 | # Check that vfork catchpoints are supported, as an indicator for | |
445 | # whether vfork-following is supported. | |
446 | check_vfork_catchpoints | |
447 | } | |
448 | ||
2fd33e94 DB |
449 | # Follow parent and follow child vfork tests with a child that execs. |
450 | with_test_prefix "exec" { | |
451 | # These are tests of gdb's ability to follow the parent of a Unix | |
452 | # vfork system call. The child will subsequently call a variant | |
453 | # of the Unix exec system call. | |
454 | do_vfork_and_follow_parent_tests | |
455 | ||
456 | # These are tests of gdb's ability to follow the child of a Unix | |
457 | # vfork system call. The child will subsequently call a variant | |
458 | # of a Unix exec system call. | |
459 | # | |
460 | do_vfork_and_follow_child_tests_exec | |
71ce889d PA |
461 | } |
462 | ||
463 | # Switch to test the case of the child exiting. We can't use | |
464 | # standard_testfile here because we don't want to overwrite the binary | |
465 | # of the previous tests. | |
466 | set testfile "foll-vfork-exit" | |
467 | set srcfile ${testfile}.c | |
468 | set binfile [standard_output_file ${testfile}] | |
469 | ||
470 | if {[build_executable $testfile.exp $testfile $srcfile] == -1} { | |
471 | untested "failed to build $testfile" | |
472 | return | |
473 | } | |
474 | ||
475 | # Follow parent and follow child vfork tests with a child that exits. | |
476 | with_test_prefix "exit" { | |
477 | # These are tests of gdb's ability to follow the parent of a Unix | |
478 | # vfork system call. The child will subsequently exit. | |
479 | do_vfork_and_follow_parent_tests | |
480 | ||
481 | # These are tests of gdb's ability to follow the child of a Unix | |
482 | # vfork system call. The child will subsequently exit. | |
483 | # | |
484 | do_vfork_and_follow_child_tests_exit | |
485 | } | |
74cf1395 JM |
486 | |
487 | set timeout $oldtimeout | |
488 | return 0 |