1 # Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2007, 2008, 2009,
2 # 2010 Free Software Foundation, Inc.
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
6 # the Free Software Foundation; either version 3 of the License, or
7 # (at your option) any later version.
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.
14 # You should have received a copy of the GNU General Public License
15 # along with this program. If not, see <http://www.gnu.org/licenses/>.
26 set testfile "watchpoint"
27 set srcfile ${testfile}.c
28 set binfile ${objdir}/${subdir}/${testfile}
32 if [get_compiler_info ${binfile}] {
36 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
37 untested watchpoint.exp
41 # Prepare for watchpoint tests by setting up two breakpoints and one
44 # We use breakpoints at marker functions to get past all the startup code,
45 # so we can get to the watchpoints in a reasonable amount of time from a
46 # known starting point.
48 # For simplicity, so we always know how to reference specific breakpoints or
49 # watchpoints by number, we expect a particular ordering and numbering of
50 # each in the combined breakpoint/watchpoint table, as follows:
53 # 1 Breakpoint marker1()
54 # 2 Breakpoint marker2()
64 # Disable hardware watchpoints if necessary.
65 if [target_info exists gdb,no_hardware_watchpoints] {
66 gdb_test "set can-use-hw-watchpoints 0" "" ""
69 if [gdb_test "break marker1" "Breakpoint 1 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker1" ] {
74 if [gdb_test "break marker2" "Breakpoint 2 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker2" ] {
79 if [gdb_test "info break" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*" "info break in watchpoint.exp" ] {
84 # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
85 # before running can cause the inferior to croak on HP-UX 11.0 for
86 # reasons yet unknown, we've disabled the ability to set watches
87 # without a running inferior. Verify the restriction.
89 send_gdb "watch ival3\n"
91 -re ".*\[Ww\]atchpoint 3: ival3.*$gdb_prompt $" {
92 pass "set watchpoint on ival3"
94 -re "warning: can't do that without a running program; try \"break main\", \"run\" first.*$gdb_prompt $" {
95 pass "set watchpoint on ival3"
100 fail "(timeout) set watchpoint on ival3"
105 if [gdb_test "info watch" "3\[ \]*.*watchpoint.*ival3" "watchpoint found in watchpoint/breakpoint table" ] {
110 # After installing the watchpoint, we disable it until we are ready
111 # to use it. This allows the test program to run at full speed until
112 # we get to the first marker function.
114 if [gdb_test "disable 3" "disable 3\[\r\n\]+" "disable watchpoint" ] {
123 # Test simple watchpoint.
126 proc test_simple_watchpoint {} {
132 # Ensure that the watchpoint is disabled when we startup.
135 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_simple_watchpoint" ] {
141 # Run until we get to the first marker function.
146 -re "Breakpoint 1, marker1 .*$gdb_prompt $" {
147 pass "run to marker1 in test_simple_watchpoint"
149 -re ".*$gdb_prompt $" {
150 fail "run to marker1 in test_simple_watchpoint"
154 fail "run to marker1 in test_simple_watchpoint (timeout)"
160 # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
161 # before running can cause the inferior to croak on HP-UX 11.0
162 # for reasons yet unknown, we've disabled the ability to set
163 # watches without a running inferior. The following testpoints used
164 # to be in [initialize].
166 send_gdb "watch ival3\n"
168 -re ".*\[Ww\]atchpoint 3: ival3\r\n$gdb_prompt $" {
169 pass "set watchpoint on ival3"
171 -re ".*$gdb_prompt $" { fail "set watchpoint on ival3" }
172 timeout { fail "set watchpoint on ival3 (timeout)" }
177 send_gdb "info watch\n"
179 -re "3\[ \]*.*watchpoint.*ival3\r\n$gdb_prompt $" {
180 pass "watchpoint found in watchpoint/breakpoint table"
182 -re ".*$gdb_prompt $" {
183 fail "watchpoint found in watchpoint/breakpoint table"
186 fail "watchpoint found in watchpoint/breakpoint table"
190 # After installing the watchpoint, we disable it until we are ready
191 # to use it. This allows the test program to run at full speed until
192 # we get to the first marker function.
194 send_gdb "disable 3\n"
196 -re "disable 3\[\r\n\]+$gdb_prompt $" { pass "disable watchpoint" }
197 -re ".*$gdb_prompt $" { fail "disable watchpoint" }
198 timeout { fail "disable watchpoint (timeout)" }
202 # After reaching the marker function, enable the watchpoint.
204 if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "enable watchpoint" ] {
209 gdb_test "break func1" "Breakpoint.*at.*"
210 gdb_test "set \$func1_breakpoint_number = \$bpnum" ""
212 gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, func1.*" \
213 "continue to breakpoint at func1"
215 # Continue until the first change, from -1 to 0
219 -re "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count; ival4 = count;.*$gdb_prompt $" {
220 pass "watchpoint hit, first time"
222 -re "Continuing.*Breakpoint.*func1.*$gdb_prompt $" {
223 setup_xfail "m68*-*-*" 2597
224 fail "thought it hit breakpoint at func1 twice"
225 gdb_test "delete \$func1_breakpoint_number" ""
226 gdb_test "continue" "\
227 Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count;" \
228 "watchpoint hit, first time"
230 -re ".*$gdb_prompt $" { fail "watchpoint hit, first time" ; return }
231 timeout { fail "watchpoint hit, first time (timeout)" ; return }
232 eof { fail "watchpoint hit, first time (eof)" ; return }
235 # Check that the hit count is reported correctly
236 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 1 time.*" "Watchpoint hit count is 1"
238 gdb_test "delete \$func1_breakpoint_number" ""
240 # Continue until the next change, from 0 to 1.
241 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit, second time"
243 # Check that the hit count is reported correctly
244 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 2 times.*" "Watchpoint hit count is 2"
246 # Continue until the next change, from 1 to 2.
247 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 1.*New value = 2.*ival3 = count; ival4 = count;.*" "watchpoint hit, third time"
249 # Check that the hit count is reported correctly
250 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 3 times.*" "Watchpoint hit count is 3"
252 # Continue until the next change, from 2 to 3.
253 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 2.*New value = 3.*ival3 = count; ival4 = count;.*" "watchpoint hit, fourth time"
255 # Check that the hit count is reported correctly
256 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 4 times.*" "Watchpoint hit count is 4"
258 # Continue until the next change, from 3 to 4.
259 # Note that this one is outside the loop.
261 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 3.*New value = 4.*ival3 = count; ival4 = count;.*" "watchpoint hit, fifth time"
263 # Check that the hit count is reported correctly
264 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 5 times.*" "Watchpoint hit count is 5"
266 # Continue until we hit the finishing marker function.
267 # Make sure we hit no more watchpoints.
269 gdb_test "cont" "Continuing.*Breakpoint.*marker2 \(\).*" \
270 "continue to marker2"
272 # Disable the watchpoint so we run at full speed until we exit.
274 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "watchpoint disabled" ] {
279 # Run until process exits.
281 if [target_info exists gdb,noresults] { return }
283 gdb_continue_to_end "continue to exit in test_simple_watchpoint"
286 # Test disabling watchpoints.
288 proc test_disabling_watchpoints {} {
295 # "info watch" is the same as "info break"
296 gdb_test "info watch" "\[0-9]+\[ \]*.*watchpoint.*ival3\r\n\.*\[0-9\]+ times.*" "watchpoints found in watchpoint/breakpoint table"
298 # Ensure that the watchpoint is disabled when we startup.
300 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_disabling_watchpoints" ] {
305 # Run until we get to the first marker function.
310 -re "Breakpoint 1, marker1 .*$gdb_prompt $" {
311 pass "run to marker1 in test_disabling_watchpoints"
313 -re ".*$gdb_prompt $" {
314 fail "run to marker1 in test_disabling_watchpoints"
318 fail "run to marker1 in test_disabling_watchpoints (timeout)"
323 # After reaching the marker function, enable the watchpoint.
325 if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "watchpoint enabled" ] {
330 # Continue until the first change, from -1 to 0
331 # Don't check the old value, because on VxWorks the variable value
332 # will not have been reinitialized.
333 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = .*New value = 0.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, first time"
335 # Continue until the next change, from 0 to 1.
336 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, second time"
338 # Disable the watchpoint but leave breakpoints
340 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint #2 in test_disabling_watchpoints" ] {
345 # Check watchpoint list, looking for the entry that confirms the
346 # watchpoint is disabled.
347 gdb_test "info watchpoints" "\[0-9]+\[ \]*.*watchpoint\[ \]*keep\[ \]*n\[ \]*ival3\r\n.*" "watchpoint disabled in table"
349 # Continue until we hit the finishing marker function.
350 # Make sure we hit no more watchpoints.
351 gdb_test "cont" "Continuing.*Breakpoint.*marker2 \\(\\).*" \
352 "disabled watchpoint skipped"
354 if [target_info exists gdb,noresults] { return }
356 gdb_continue_to_end "continue to exit in test_disabling_watchpoints"
359 # Test stepping and other mundane operations with watchpoints enabled
360 proc test_stepping {} {
363 if [runto marker1] then {
364 gdb_test "watch ival2" ".*\[Ww\]atchpoint \[0-9\]*: ival2"
366 # Well, let's not be too mundane. It should be a *bit* of a challenge
367 gdb_test "break func2 if 0" "Breakpoint.*at.*"
368 gdb_test "p \$func2_breakpoint_number = \$bpnum" " = .*"
370 gdb_test "p func1 ()" "= 73" \
371 "calling function with watchpoint enabled"
374 # "finish" brings us back to main.
375 # On some targets (e.g. alpha) gdb will stop from the finish in midline
376 # of the marker1 call. This is due to register restoring code on
377 # the alpha and might be caused by stack adjustment instructions
378 # on other targets. In this case we will step once more.
383 -re "Run.*exit from.*marker1.* at" {
384 pass "finish from marker1"
386 default { fail "finish from marker1 (timeout)" ; return }
390 -re "marker1 \\(\\);.*$gdb_prompt $" {
394 -re "func1 \\(\\);.*$gdb_prompt $" {
395 pass "back at main from marker1"
397 -re ".*$gdb_prompt $" {
398 fail "back at main from marker1"
400 default { fail "back at main from marker1 (timeout)" ; return }
403 gdb_test "next" "for \\(count = 0.*" "next to `for' in watchpoint.exp"
405 # Now test that "until" works. It's a bit tricky to test
406 # "until", because compilers don't always arrange the code
407 # exactly the same way, and we might get slightly different
408 # sequences of statements. But the following should be true
409 # (if not it is a compiler or a debugger bug): The user who
410 # does "until" at every statement of a loop should end up
411 # stepping through the loop once, and the debugger should not
412 # stop for any of the remaining iterations.
414 gdb_test "until" "ival1 = count.*" "until to ival1 assignment"
415 gdb_test "until" "ival3 = count.*" "until to ival3 assignment"
418 -re "(for \\(count = 0|\}).*$gdb_prompt $" {
419 gdb_test "until" "ival1 = count; /. Outside loop ./" \
422 -re "ival1 = count; /. Outside loop ./.*$gdb_prompt $" {
423 pass "until out of loop"
425 -re ".*$gdb_prompt $" {
426 fail "until out of loop"
428 default { fail "until out of loop (timeout)" ; return }
431 gdb_test "step" "ival2 = count.*" "step to ival2 assignment"
435 # Test stepping and other mundane operations with watchpoints enabled
436 proc test_watchpoint_triggered_in_syscall {} {
439 # These tests won't work without printf support.
440 if [gdb_skip_stdio_test "watchpoints triggered in syscall"] {
443 # Run until we get to the first marker function.
446 set testname "Watch buffer passed to read syscall"
447 if [runto marker2] then {
448 gdb_test "watch buf\[0\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[0\\\]"
449 gdb_test "watch buf\[1\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[1\\\]"
450 gdb_test "watch buf\[2\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[2\\\]"
451 gdb_test "watch buf\[3\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[3\\\]"
452 gdb_test "watch buf\[4\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[4\\\]"
453 gdb_test "break marker4" ".*Breakpoint.*"
455 gdb_test "set doread = 1" ""
457 # If we send_gdb "123\n" before gdb has switched the tty, then it goes
458 # to gdb, not the inferior, and we lose. So that is why we have
459 # watchpoint.c prompt us, so we can wait for that prompt.
460 send_gdb "continue\n";
462 -re "Continuing\\.\r\ntype stuff for buf now:" {
463 pass "continue to read"
466 fail "continue to read";
473 -re ".*\[Ww\]atchpoint.*buf\\\[0\\\].*Old value = 0.*New value = 49\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
474 -re ".*\[Ww\]atchpoint.*buf\\\[1\\\].*Old value = 0.*New value = 50\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
475 -re ".*\[Ww\]atchpoint.*buf\\\[2\\\].*Old value = 0.*New value = 51\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
476 -re ".*\[Ww\]atchpoint.*buf\\\[3\\\].*Old value = 0.*New value = 10\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
477 -re ".*$gdb_prompt $" { pass "sent 123" }
478 timeout { fail "sent 123 (timeout)" }
481 # Examine the values in buf to see how many watchpoints we
482 # should have printed.
483 send_gdb "print buf\[0\]\n"
485 -re ".*= 49.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[0\]"}
486 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[0\]"}
487 -re ".*$gdb_prompt $" { fail "print buf\[0\]"}
488 default { fail "print buf\[0\]"}
490 send_gdb "print buf\[1\]\n"
492 -re ".*= 50.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[1\]"}
493 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[1\]"}
494 -re ".*$gdb_prompt $" { fail "print buf\[1\]"}
495 default { fail "print buf\[1\]"}
497 send_gdb "print buf\[2\]\n"
499 -re ".*= 51.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[2\]"}
500 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[2\]"}
501 -re ".*$gdb_prompt $" { fail "print buf\[2\]"}
502 default { fail "print buf\[2\]"}
504 send_gdb "print buf\[3\]\n"
506 -re ".*= 10.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[3\]"}
507 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[3\]"}
508 -re ".*$gdb_prompt $" { fail "print buf\[3\]" }
509 default { fail "print buf\[3\]" }
512 # Did we find what we were looking for? If not, flunk it.
513 if [expr $x==$y] then { pass $testname } else { fail "$testname (only triggered $x watchpoints, expected $y)"}
515 # Continue until we hit the finishing marker function.
516 # Make sure we hit no more watchpoints.
517 gdb_test "cont" "Continuing.*Breakpoint.*marker4 \\(\\).*" \
518 "continue to marker4"
520 # Disable everything so we can finish the program at full speed
521 gdb_test "disable" "" "disable in test_watchpoint_triggered_in_syscall"
523 if [target_info exists gdb,noresults] { return }
525 gdb_continue_to_end "continue to exit in test_watchpoint_triggered_in_syscall"
529 # Do a simple test of of watching through a pointer when the pointer
530 # itself changes. Should add some more complicated stuff here.
532 proc test_complex_watchpoint {} {
535 if [runto marker4] then {
536 gdb_test "watch ptr1->val" ".*\[Ww\]atchpoint \[0-9\]*: ptr1->val"
537 gdb_test "break marker5" ".*Breakpoint.*"
539 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ptr1->val.*Old value = 1.*New value = 2.*" "Test complex watchpoint"
541 # Continue until we hit the marker5 function.
542 # Make sure we hit no more watchpoints.
544 gdb_test "cont" "Continuing.*Breakpoint.*marker5 \\(\\).*" \
545 "did not trigger wrong watchpoint"
547 # Test watches of things declared locally in a function.
548 # In particular, test that a watch of stack-based things
549 # is deleted when the stack-based things go out of scope.
551 gdb_test "disable" "" "disable in test_complex_watchpoint"
552 gdb_test "break marker6" ".*Breakpoint.*"
553 gdb_test "cont" "Continuing.*Breakpoint.*marker6 \\(\\).*" \
554 "continue to marker6"
555 gdb_test "break func2" ".*Breakpoint.*"
556 gdb_test "cont" "Continuing.*func2.*"
558 # Test a watch of a single stack-based variable, whose scope
559 # is the function we're now in. This should auto-delete when
560 # execution exits the scope of the watchpoint.
562 gdb_test "watch local_a" ".*\[Ww\]atchpoint \[0-9\]*: local_a" "set local watch"
563 gdb_test "cont" "\[Ww\]atchpoint.*local_a.*" "trigger local watch"
564 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" "self-delete local watch"
566 gdb_test "cont" "Continuing.*func2.*"
567 # We should be in "func2" again now. Test a watch of an
568 # expression which includes both a stack-based local and
569 # something whose scope is larger than this invocation
570 # of "func2". This should also auto-delete.
572 gdb_test "watch local_a + ival5" ".*\[Ww\]atchpoint \[0-9\]*: local_a . ival5" \
573 "set partially local watch"
574 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
575 "trigger1 partially local watch"
576 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
577 "trigger2 partially local watch"
578 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
579 "self-delete partially local watch"
581 # We should be in "func2" again now. Test a watch of a
582 # static (non-stack-based) local. Since this has scope
583 # across any invocations of "func2", it should not auto-
586 gdb_test "cont" "Continuing.*func2.*"
587 gdb_test "watch static_b" ".*\[Ww\]atchpoint \[0-9\]*: static_b" \
588 "set static local watch"
589 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: static_b.*" \
590 "trigger static local watch"
591 gdb_test "cont" "Continuing.*marker6 \\(\\).*" \
592 "continue after trigger static local watch"
593 gdb_test "info break" ".*watchpoint.*static_b.*" \
594 "static local watch did not self-delete"
596 # We should be in "recurser" now. Test a watch of a stack-
597 # based local. Symbols mentioned in a watchpoint are bound
598 # at watchpoint-creation. Thus, a watch of a stack-based
599 # local to a recursing function should be bound only to that
600 # one invocation, and should not trigger for other invocations.
602 gdb_test "tbreak recurser" ".*breakpoint.*"
603 gdb_test "cont" "Continuing.*recurser.*"
604 gdb_test "watch local_x" ".*\[Ww\]atchpoint \[0-9\]*: local_x" \
605 "set local watch in recursive call"
606 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_x.*New value = 2.*" \
607 "trigger local watch in recursive call"
608 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
609 "self-delete local watch in recursive call"
611 # Disable everything so we can finish the program at full speed
612 gdb_test "disable" "" "disable in test_complex_watchpoint"
614 if [target_info exists gdb,noresults] { return }
616 gdb_continue_to_end "continue to exit in test_complex_watchpoint"
620 proc test_watchpoint_and_breakpoint {} {
623 # This is a test for PR gdb/38, which involves setting a
624 # watchpoint right after you've reached a breakpoint.
626 if [runto func3] then {
627 gdb_breakpoint [gdb_get_line_number "second x assignment"]
628 gdb_continue_to_breakpoint "second x assignment"
629 gdb_test "watch x" ".*atchpoint \[0-9\]+: x"
630 gdb_test_multiple "next" "next after watch x" {
631 -re ".*atchpoint \[0-9\]+: x\r\n\r\nOld value = 0\r\nNew value = 1\r\n.*$gdb_prompt $" {
632 pass "next after watch x"
634 -re "\[0-9\]+\[\t \]+y = 1;\r\n$gdb_prompt $" {
635 kfail "gdb/38" "next after watch x"
641 proc test_inaccessible_watchpoint {} {
644 # This is a test for watchpoints on currently inaccessible (but later
647 if [runto func4] then {
648 # Make sure we only allow memory access errors.
649 set msg "watchpoint refused to insert on nonexistent struct member"
650 gdb_test_multiple "watch struct1.nosuchmember" $msg {
651 -re ".*atchpoint \[0-9\]+: struct1.nosuchmember.*$gdb_prompt $" {
652 # PR breakpoints/9681
655 -re "There is no member named nosuchmember\\..*$gdb_prompt $" {
660 gdb_test "watch *global_ptr" ".*atchpoint \[0-9\]+: \\*global_ptr"
661 gdb_test "next" ".*global_ptr = buf.*"
662 gdb_test_multiple "next" "next over ptr init" {
663 -re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = .*\r\nNew value = 3 .*\r\n.*$gdb_prompt $" {
664 # We can not test for <unknown> here because NULL may be readable.
665 # This test does rely on *NULL != 3.
666 pass "next over ptr init"
669 gdb_test_multiple "next" "next over buffer set" {
670 -re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = 3 .*\r\nNew value = 7 .*\r\n.*$gdb_prompt $" {
671 pass "next over buffer set"
677 proc test_watchpoint_in_big_blob {} {
680 gdb_test "watch buf" ".*atchpoint \[0-9\]+: buf"
681 gdb_test "cont" "Continuing.*atchpoint \[0-9\]+: buf\r\n\r\nOld value = .*testte\".*" "watchpoint on buf hit"
684 # Start with a fresh gdb.
688 gdb_reinitialize_dir $srcdir/$subdir
690 set prev_timeout $timeout
692 verbose "Timeout now 600 sec.\n"
694 if [initialize] then {
696 test_simple_watchpoint
698 # The IDT/sim monitor only has 8 (!) open files, of which it uses
699 # 4 (!). So we have to make sure one program exits before
700 # starting another one.
701 if [istarget "mips-idt-*"] then {
704 gdb_reinitialize_dir $srcdir/$subdir
709 test_disabling_watchpoints
712 if [istarget "mips-idt-*"] then {
715 gdb_reinitialize_dir $srcdir/$subdir
720 if ![target_info exists gdb,cannot_call_functions] {
724 if [istarget "mips-idt-*"] then {
727 gdb_reinitialize_dir $srcdir/$subdir
733 # Only enabled for some targets merely because it has not been tested
735 # On sparc-sun-sunos4.1.3, GDB was running all the way to the marker4
736 # breakpoint before stopping for the watchpoint. I don't know why.
737 if {[istarget "hppa*-*-*"]} then {
738 test_watchpoint_triggered_in_syscall
742 if [istarget "mips-idt-*"] then {
745 gdb_reinitialize_dir $srcdir/$subdir
750 # Only enabled for some targets merely because it has not been tested
752 if {[istarget "hppa*-*-*"] || \
753 [istarget "sparc*-*-sunos*"] || \
754 [istarget "m32r-*-*"]} then {
755 test_complex_watchpoint
758 # Verify that a user can force GDB to use "slow" watchpoints.
759 # (This proves rather little on kernels that don't support
760 # fast watchpoints, but still...)
762 if ![runto_main] then { fail "watch tests suppressed" }
764 send_gdb "set can-use-hw-watchpoints 0\n"
767 {pass "disable fast watches"}
768 timeout {fail "(timeout) disable fast watches"}
770 send_gdb "show can-use-hw-watchpoints\n"
772 -re "Debugger's willingness to use watchpoint hardware is 0.*$gdb_prompt $"\
773 {pass "show disable fast watches"}
775 {fail "show disable fast watches"}
776 timeout {fail "(timeout) show disable fast watches"}
778 send_gdb "watch ival3 if count > 1\n"
780 -re "Watchpoint \[0-9\]*: ival3.*$gdb_prompt $"\
781 {pass "set slow conditional watch"}
783 {fail "set slow conditional watch"}
784 timeout {fail "(timeout) set slow conditional watch"}
786 send_gdb "continue\n"
788 -re "Watchpoint \[0-9\]*: ival3.*Old value = 1.*New value = 2.*$gdb_prompt $"\
789 {pass "trigger slow conditional watch"}
791 {fail "trigger slow conditional watch"}
792 timeout {fail "(timeout) trigger slow conditional watch"}
795 # We've explicitly disabled hardware watches. Verify that GDB
796 # refrains from using them.
798 send_gdb "rwatch ival3\n"
800 -re "Expression cannot be implemented with read/access watchpoint..*$gdb_prompt $"\
801 {pass "rwatch disallowed when can-set-hw-watchpoints cleared"}
803 {fail "rwatch disallowed when can-set-hw-watchpoints cleared"}
804 timeout {fail "(timeout) rwatch disallowed when can-use-hw-watchpoints cleared"}
807 # Read- and access watchpoints are unsupported on HP-UX. Verify
808 # that GDB gracefully responds to requests to create them.
810 if [istarget "hppa*-*-hpux*"] then {
811 send_gdb "set can-use-hw-watchpoints 1\n"
814 {pass "enable fast watches"}
815 timeout {fail "(timeout) enable fast watches"}
817 send_gdb "rwatch ival3\n"
819 -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
820 {pass "read watches disallowed"}
822 {fail "read watches disallowed"}
823 timeout {fail "(timeout) read watches disallowed"}
826 send_gdb "awatch ival3\n"
828 -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
829 {pass "access watches disallowed"}
831 {fail "access watches disallowed"}
832 timeout {fail "(timeout) access watches disallowed"}
836 test_inaccessible_watchpoint
839 if [istarget "mips-idt-*"] then {
842 gdb_reinitialize_dir $srcdir/$subdir
847 test_watchpoint_and_breakpoint
849 test_watchpoint_in_big_blob
852 # Restore old timeout
853 set timeout $prev_timeout
854 verbose "Timeout now $timeout sec.\n"