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/>.
17 # This file was written by Fred Fish. (fnf@cygnus.com)
24 set testfile "watchpoint"
25 set srcfile ${testfile}.c
26 set binfile ${objdir}/${subdir}/${testfile}
30 if [get_compiler_info ${binfile}] {
34 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
35 untested watchpoint.exp
39 # Prepare for watchpoint tests by setting up two breakpoints and one
42 # We use breakpoints at marker functions to get past all the startup code,
43 # so we can get to the watchpoints in a reasonable amount of time from a
44 # known starting point.
46 # For simplicity, so we always know how to reference specific breakpoints or
47 # watchpoints by number, we expect a particular ordering and numbering of
48 # each in the combined breakpoint/watchpoint table, as follows:
51 # 1 Breakpoint marker1()
52 # 2 Breakpoint marker2()
62 # Disable hardware watchpoints if necessary.
63 if [target_info exists gdb,no_hardware_watchpoints] {
64 gdb_test "set can-use-hw-watchpoints 0" "" ""
67 if [gdb_test "break marker1" "Breakpoint 1 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker1" ] {
72 if [gdb_test "break marker2" "Breakpoint 2 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker2" ] {
77 if [gdb_test "info break" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*" "info break in watchpoint.exp" ] {
82 # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
83 # before running can cause the inferior to croak on HP-UX 11.0 for
84 # reasons yet unknown, we've disabled the ability to set watches
85 # without a running inferior. Verify the restriction.
87 send_gdb "watch ival3\n"
89 -re ".*\[Ww\]atchpoint 3: ival3.*$gdb_prompt $" {
90 pass "set watchpoint on ival3"
92 -re "warning: can't do that without a running program; try \"break main\", \"run\" first.*$gdb_prompt $" {
93 pass "set watchpoint on ival3"
98 fail "(timeout) set watchpoint on ival3"
103 if [gdb_test "info watch" "3\[ \]*.*watchpoint.*ival3" "watchpoint found in watchpoint/breakpoint table" ] {
108 # After installing the watchpoint, we disable it until we are ready
109 # to use it. This allows the test program to run at full speed until
110 # we get to the first marker function.
112 if [gdb_test "disable 3" "disable 3\[\r\n\]+" "disable watchpoint" ] {
121 # Test simple watchpoint.
124 proc test_simple_watchpoint {} {
130 # Ensure that the watchpoint is disabled when we startup.
133 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_simple_watchpoint" ] {
139 # Run until we get to the first marker function.
144 -re "Breakpoint 1, marker1 .*$gdb_prompt $" {
145 pass "run to marker1 in test_simple_watchpoint"
147 -re ".*$gdb_prompt $" {
148 fail "run to marker1 in test_simple_watchpoint"
152 fail "run to marker1 in test_simple_watchpoint (timeout)"
158 # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
159 # before running can cause the inferior to croak on HP-UX 11.0
160 # for reasons yet unknown, we've disabled the ability to set
161 # watches without a running inferior. The following testpoints used
162 # to be in [initialize].
164 send_gdb "watch ival3\n"
166 -re ".*\[Ww\]atchpoint 3: ival3\r\n$gdb_prompt $" {
167 pass "set watchpoint on ival3"
169 -re ".*$gdb_prompt $" { fail "set watchpoint on ival3" }
170 timeout { fail "set watchpoint on ival3 (timeout)" }
175 send_gdb "info watch\n"
177 -re "3\[ \]*.*watchpoint.*ival3\r\n$gdb_prompt $" {
178 pass "watchpoint found in watchpoint/breakpoint table"
180 -re ".*$gdb_prompt $" {
181 fail "watchpoint found in watchpoint/breakpoint table"
184 fail "watchpoint found in watchpoint/breakpoint table"
188 # After installing the watchpoint, we disable it until we are ready
189 # to use it. This allows the test program to run at full speed until
190 # we get to the first marker function.
192 send_gdb "disable 3\n"
194 -re "disable 3\[\r\n\]+$gdb_prompt $" { pass "disable watchpoint" }
195 -re ".*$gdb_prompt $" { fail "disable watchpoint" }
196 timeout { fail "disable watchpoint (timeout)" }
200 # After reaching the marker function, enable the watchpoint.
202 if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "enable watchpoint" ] {
207 gdb_test "break func1" "Breakpoint.*at.*"
208 gdb_test "set \$func1_breakpoint_number = \$bpnum" ""
210 gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, func1.*" \
211 "continue to breakpoint at func1"
213 # Continue until the first change, from -1 to 0
217 -re "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count; ival4 = count;.*$gdb_prompt $" {
218 pass "watchpoint hit, first time"
220 -re "Continuing.*Breakpoint.*func1.*$gdb_prompt $" {
221 setup_xfail "m68*-*-*" 2597
222 fail "thought it hit breakpoint at func1 twice"
223 gdb_test "delete \$func1_breakpoint_number" ""
224 gdb_test "continue" "\
225 Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count;" \
226 "watchpoint hit, first time"
228 -re ".*$gdb_prompt $" { fail "watchpoint hit, first time" ; return }
229 timeout { fail "watchpoint hit, first time (timeout)" ; return }
230 eof { fail "watchpoint hit, first time (eof)" ; return }
233 # Check that the hit count is reported correctly
234 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 1 time.*" "Watchpoint hit count is 1"
236 gdb_test "delete \$func1_breakpoint_number" ""
238 # Continue until the next change, from 0 to 1.
239 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit, second time"
241 # Check that the hit count is reported correctly
242 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 2 times.*" "Watchpoint hit count is 2"
244 # Continue until the next change, from 1 to 2.
245 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 1.*New value = 2.*ival3 = count; ival4 = count;.*" "watchpoint hit, third time"
247 # Check that the hit count is reported correctly
248 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 3 times.*" "Watchpoint hit count is 3"
250 # Continue until the next change, from 2 to 3.
251 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 2.*New value = 3.*ival3 = count; ival4 = count;.*" "watchpoint hit, fourth time"
253 # Check that the hit count is reported correctly
254 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 4 times.*" "Watchpoint hit count is 4"
256 # Continue until the next change, from 3 to 4.
257 # Note that this one is outside the loop.
259 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 3.*New value = 4.*ival3 = count; ival4 = count;.*" "watchpoint hit, fifth time"
261 # Check that the hit count is reported correctly
262 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 5 times.*" "Watchpoint hit count is 5"
264 # Continue until we hit the finishing marker function.
265 # Make sure we hit no more watchpoints.
267 gdb_test "cont" "Continuing.*Breakpoint.*marker2 \(\).*" \
268 "continue to marker2"
270 # Disable the watchpoint so we run at full speed until we exit.
272 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "watchpoint disabled" ] {
277 # Run until process exits.
279 if [target_info exists gdb,noresults] { return }
281 gdb_continue_to_end "continue to exit in test_simple_watchpoint"
284 # Test disabling watchpoints.
286 proc test_disabling_watchpoints {} {
293 # "info watch" is the same as "info break"
294 gdb_test "info watch" "\[0-9]+\[ \]*.*watchpoint.*ival3\r\n\.*\[0-9\]+ times.*" "watchpoints found in watchpoint/breakpoint table"
296 # Ensure that the watchpoint is disabled when we startup.
298 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_disabling_watchpoints" ] {
303 # Run until we get to the first marker function.
308 -re "Breakpoint 1, marker1 .*$gdb_prompt $" {
309 pass "run to marker1 in test_disabling_watchpoints"
311 -re ".*$gdb_prompt $" {
312 fail "run to marker1 in test_disabling_watchpoints"
316 fail "run to marker1 in test_disabling_watchpoints (timeout)"
321 # After reaching the marker function, enable the watchpoint.
323 if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "watchpoint enabled" ] {
328 # Continue until the first change, from -1 to 0
329 # Don't check the old value, because on VxWorks the variable value
330 # will not have been reinitialized.
331 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = .*New value = 0.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, first time"
333 # Continue until the next change, from 0 to 1.
334 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"
336 # Disable the watchpoint but leave breakpoints
338 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint #2 in test_disabling_watchpoints" ] {
343 # Check watchpoint list, looking for the entry that confirms the
344 # watchpoint is disabled.
345 gdb_test "info watchpoints" "\[0-9]+\[ \]*.*watchpoint\[ \]*keep\[ \]*n\[ \]*ival3\r\n.*" "watchpoint disabled in table"
347 # Continue until we hit the finishing marker function.
348 # Make sure we hit no more watchpoints.
349 gdb_test "cont" "Continuing.*Breakpoint.*marker2 \\(\\).*" \
350 "disabled watchpoint skipped"
352 if [target_info exists gdb,noresults] { return }
354 gdb_continue_to_end "continue to exit in test_disabling_watchpoints"
357 # Test stepping and other mundane operations with watchpoints enabled
358 proc test_stepping {} {
361 if [runto marker1] then {
362 gdb_test "watch ival2" ".*\[Ww\]atchpoint \[0-9\]*: ival2"
364 # Well, let's not be too mundane. It should be a *bit* of a challenge
365 gdb_test "break func2 if 0" "Breakpoint.*at.*"
366 gdb_test "p \$func2_breakpoint_number = \$bpnum" " = .*"
368 gdb_test "p func1 ()" "= 73" \
369 "calling function with watchpoint enabled"
372 # "finish" brings us back to main.
373 # On some targets (e.g. alpha) gdb will stop from the finish in midline
374 # of the marker1 call. This is due to register restoring code on
375 # the alpha and might be caused by stack adjustment instructions
376 # on other targets. In this case we will step once more.
381 -re "Run.*exit from.*marker1.* at" {
382 pass "finish from marker1"
384 default { fail "finish from marker1 (timeout)" ; return }
388 -re "marker1 \\(\\);.*$gdb_prompt $" {
392 -re "func1 \\(\\);.*$gdb_prompt $" {
393 pass "back at main from marker1"
395 -re ".*$gdb_prompt $" {
396 fail "back at main from marker1"
398 default { fail "back at main from marker1 (timeout)" ; return }
401 gdb_test "next" "for \\(count = 0.*" "next to `for' in watchpoint.exp"
403 # Now test that "until" works. It's a bit tricky to test
404 # "until", because compilers don't always arrange the code
405 # exactly the same way, and we might get slightly different
406 # sequences of statements. But the following should be true
407 # (if not it is a compiler or a debugger bug): The user who
408 # does "until" at every statement of a loop should end up
409 # stepping through the loop once, and the debugger should not
410 # stop for any of the remaining iterations.
412 gdb_test "until" "ival1 = count.*" "until to ival1 assignment"
413 gdb_test "until" "ival3 = count.*" "until to ival3 assignment"
416 -re "(for \\(count = 0|\}).*$gdb_prompt $" {
417 gdb_test "until" "ival1 = count; /. Outside loop ./" \
420 -re "ival1 = count; /. Outside loop ./.*$gdb_prompt $" {
421 pass "until out of loop"
423 -re ".*$gdb_prompt $" {
424 fail "until out of loop"
426 default { fail "until out of loop (timeout)" ; return }
429 gdb_test "step" "ival2 = count.*" "step to ival2 assignment"
433 # Test stepping and other mundane operations with watchpoints enabled
434 proc test_watchpoint_triggered_in_syscall {} {
437 # These tests won't work without printf support.
438 if [gdb_skip_stdio_test "watchpoints triggered in syscall"] {
441 # Run until we get to the first marker function.
444 set testname "Watch buffer passed to read syscall"
445 if [runto marker2] then {
446 gdb_test "watch buf\[0\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[0\\\]"
447 gdb_test "watch buf\[1\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[1\\\]"
448 gdb_test "watch buf\[2\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[2\\\]"
449 gdb_test "watch buf\[3\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[3\\\]"
450 gdb_test "watch buf\[4\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[4\\\]"
451 gdb_test "break marker4" ".*Breakpoint.*"
453 gdb_test "set doread = 1" ""
455 # If we send_gdb "123\n" before gdb has switched the tty, then it goes
456 # to gdb, not the inferior, and we lose. So that is why we have
457 # watchpoint.c prompt us, so we can wait for that prompt.
458 send_gdb "continue\n";
460 -re "Continuing\\.\r\ntype stuff for buf now:" {
461 pass "continue to read"
464 fail "continue to read";
471 -re ".*\[Ww\]atchpoint.*buf\\\[0\\\].*Old value = 0.*New value = 49\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
472 -re ".*\[Ww\]atchpoint.*buf\\\[1\\\].*Old value = 0.*New value = 50\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
473 -re ".*\[Ww\]atchpoint.*buf\\\[2\\\].*Old value = 0.*New value = 51\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
474 -re ".*\[Ww\]atchpoint.*buf\\\[3\\\].*Old value = 0.*New value = 10\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
475 -re ".*$gdb_prompt $" { pass "sent 123" }
476 timeout { fail "sent 123 (timeout)" }
479 # Examine the values in buf to see how many watchpoints we
480 # should have printed.
481 send_gdb "print buf\[0\]\n"
483 -re ".*= 49.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[0\]"}
484 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[0\]"}
485 -re ".*$gdb_prompt $" { fail "print buf\[0\]"}
486 default { fail "print buf\[0\]"}
488 send_gdb "print buf\[1\]\n"
490 -re ".*= 50.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[1\]"}
491 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[1\]"}
492 -re ".*$gdb_prompt $" { fail "print buf\[1\]"}
493 default { fail "print buf\[1\]"}
495 send_gdb "print buf\[2\]\n"
497 -re ".*= 51.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[2\]"}
498 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[2\]"}
499 -re ".*$gdb_prompt $" { fail "print buf\[2\]"}
500 default { fail "print buf\[2\]"}
502 send_gdb "print buf\[3\]\n"
504 -re ".*= 10.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[3\]"}
505 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[3\]"}
506 -re ".*$gdb_prompt $" { fail "print buf\[3\]" }
507 default { fail "print buf\[3\]" }
510 # Did we find what we were looking for? If not, flunk it.
511 if [expr $x==$y] then { pass $testname } else { fail "$testname (only triggered $x watchpoints, expected $y)"}
513 # Continue until we hit the finishing marker function.
514 # Make sure we hit no more watchpoints.
515 gdb_test "cont" "Continuing.*Breakpoint.*marker4 \\(\\).*" \
516 "continue to marker4"
518 # Disable everything so we can finish the program at full speed
519 gdb_test "disable" "" "disable in test_watchpoint_triggered_in_syscall"
521 if [target_info exists gdb,noresults] { return }
523 gdb_continue_to_end "continue to exit in test_watchpoint_triggered_in_syscall"
527 # Do a simple test of of watching through a pointer when the pointer
528 # itself changes. Should add some more complicated stuff here.
530 proc test_complex_watchpoint {} {
533 if [runto marker4] then {
534 gdb_test "watch ptr1->val" ".*\[Ww\]atchpoint \[0-9\]*: ptr1->val"
535 gdb_test "break marker5" ".*Breakpoint.*"
537 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ptr1->val.*Old value = 1.*New value = 2.*" "Test complex watchpoint"
539 # Continue until we hit the marker5 function.
540 # Make sure we hit no more watchpoints.
542 gdb_test "cont" "Continuing.*Breakpoint.*marker5 \\(\\).*" \
543 "did not trigger wrong watchpoint"
545 # Test watches of things declared locally in a function.
546 # In particular, test that a watch of stack-based things
547 # is deleted when the stack-based things go out of scope.
549 gdb_test "disable" "" "disable in test_complex_watchpoint"
550 gdb_test "break marker6" ".*Breakpoint.*"
551 gdb_test "cont" "Continuing.*Breakpoint.*marker6 \\(\\).*" \
552 "continue to marker6"
553 gdb_test "break func2" ".*Breakpoint.*"
554 gdb_test "cont" "Continuing.*func2.*"
556 # Test a watch of a single stack-based variable, whose scope
557 # is the function we're now in. This should auto-delete when
558 # execution exits the scope of the watchpoint.
560 gdb_test "watch local_a" ".*\[Ww\]atchpoint \[0-9\]*: local_a" "set local watch"
561 gdb_test "cont" "\[Ww\]atchpoint.*local_a.*" "trigger local watch"
562 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" "self-delete local watch"
564 gdb_test "cont" "Continuing.*func2.*"
565 # We should be in "func2" again now. Test a watch of an
566 # expression which includes both a stack-based local and
567 # something whose scope is larger than this invocation
568 # of "func2". This should also auto-delete.
570 gdb_test "watch local_a + ival5" ".*\[Ww\]atchpoint \[0-9\]*: local_a . ival5" \
571 "set partially local watch"
572 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
573 "trigger1 partially local watch"
574 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
575 "trigger2 partially local watch"
576 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
577 "self-delete partially local watch"
579 # We should be in "func2" again now. Test a watch of a
580 # static (non-stack-based) local. Since this has scope
581 # across any invocations of "func2", it should not auto-
584 gdb_test "cont" "Continuing.*func2.*"
585 gdb_test "watch static_b" ".*\[Ww\]atchpoint \[0-9\]*: static_b" \
586 "set static local watch"
587 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: static_b.*" \
588 "trigger static local watch"
589 gdb_test "cont" "Continuing.*marker6 \\(\\).*" \
590 "continue after trigger static local watch"
591 gdb_test "info break" ".*watchpoint.*static_b.*" \
592 "static local watch did not self-delete"
594 # We should be in "recurser" now. Test a watch of a stack-
595 # based local. Symbols mentioned in a watchpoint are bound
596 # at watchpoint-creation. Thus, a watch of a stack-based
597 # local to a recursing function should be bound only to that
598 # one invocation, and should not trigger for other invocations.
600 gdb_test "tbreak recurser" ".*breakpoint.*"
601 gdb_test "cont" "Continuing.*recurser.*"
602 gdb_test "watch local_x" ".*\[Ww\]atchpoint \[0-9\]*: local_x" \
603 "set local watch in recursive call"
604 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_x.*New value = 2.*" \
605 "trigger local watch in recursive call"
606 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
607 "self-delete local watch in recursive call"
609 # Disable everything so we can finish the program at full speed
610 gdb_test "disable" "" "disable in test_complex_watchpoint"
612 if [target_info exists gdb,noresults] { return }
614 gdb_continue_to_end "continue to exit in test_complex_watchpoint"
618 proc test_watchpoint_and_breakpoint {} {
621 # This is a test for PR gdb/38, which involves setting a
622 # watchpoint right after you've reached a breakpoint.
624 if [runto func3] then {
625 gdb_breakpoint [gdb_get_line_number "second x assignment"]
626 gdb_continue_to_breakpoint "second x assignment"
627 gdb_test "watch x" ".*atchpoint \[0-9\]+: x"
628 gdb_test_multiple "next" "next after watch x" {
629 -re ".*atchpoint \[0-9\]+: x\r\n\r\nOld value = 0\r\nNew value = 1\r\n.*$gdb_prompt $" {
630 pass "next after watch x"
632 -re "\[0-9\]+\[\t \]+y = 1;\r\n$gdb_prompt $" {
633 kfail "gdb/38" "next after watch x"
639 proc test_inaccessible_watchpoint {} {
642 # This is a test for watchpoints on currently inaccessible (but later
645 if [runto func4] then {
646 # Make sure we only allow memory access errors.
647 set msg "watchpoint refused to insert on nonexistent struct member"
648 gdb_test_multiple "watch struct1.nosuchmember" $msg {
649 -re ".*atchpoint \[0-9\]+: struct1.nosuchmember.*$gdb_prompt $" {
650 # PR breakpoints/9681
653 -re "There is no member named nosuchmember\\..*$gdb_prompt $" {
658 gdb_test "watch *global_ptr" ".*atchpoint \[0-9\]+: \\*global_ptr"
659 gdb_test "next" ".*global_ptr = buf.*"
660 gdb_test_multiple "next" "next over ptr init" {
661 -re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = .*\r\nNew value = 3 .*\r\n.*$gdb_prompt $" {
662 # We can not test for <unknown> here because NULL may be readable.
663 # This test does rely on *NULL != 3.
664 pass "next over ptr init"
667 gdb_test_multiple "next" "next over buffer set" {
668 -re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = 3 .*\r\nNew value = 7 .*\r\n.*$gdb_prompt $" {
669 pass "next over buffer set"
675 proc test_watchpoint_in_big_blob {} {
678 gdb_test "watch buf" ".*atchpoint \[0-9\]+: buf"
679 gdb_test "cont" "Continuing.*atchpoint \[0-9\]+: buf\r\n\r\nOld value = .*testte\".*" "watchpoint on buf hit"
682 # Start with a fresh gdb.
686 gdb_reinitialize_dir $srcdir/$subdir
688 set prev_timeout $timeout
690 verbose "Timeout now 600 sec.\n"
692 if [initialize] then {
694 test_simple_watchpoint
696 # The IDT/sim monitor only has 8 (!) open files, of which it uses
697 # 4 (!). So we have to make sure one program exits before
698 # starting another one.
699 if [istarget "mips-idt-*"] then {
702 gdb_reinitialize_dir $srcdir/$subdir
707 test_disabling_watchpoints
710 if [istarget "mips-idt-*"] then {
713 gdb_reinitialize_dir $srcdir/$subdir
718 if ![target_info exists gdb,cannot_call_functions] {
722 if [istarget "mips-idt-*"] then {
725 gdb_reinitialize_dir $srcdir/$subdir
731 # Only enabled for some targets merely because it has not been tested
733 # On sparc-sun-sunos4.1.3, GDB was running all the way to the marker4
734 # breakpoint before stopping for the watchpoint. I don't know why.
735 if {[istarget "hppa*-*-*"]} then {
736 test_watchpoint_triggered_in_syscall
740 if [istarget "mips-idt-*"] then {
743 gdb_reinitialize_dir $srcdir/$subdir
748 # Only enabled for some targets merely because it has not been tested
750 if {[istarget "hppa*-*-*"] || \
751 [istarget "sparc*-*-sunos*"] || \
752 [istarget "m32r-*-*"]} then {
753 test_complex_watchpoint
756 # Verify that a user can force GDB to use "slow" watchpoints.
757 # (This proves rather little on kernels that don't support
758 # fast watchpoints, but still...)
760 if ![runto_main] then { fail "watch tests suppressed" }
762 send_gdb "set can-use-hw-watchpoints 0\n"
765 {pass "disable fast watches"}
766 timeout {fail "(timeout) disable fast watches"}
768 send_gdb "show can-use-hw-watchpoints\n"
770 -re "Debugger's willingness to use watchpoint hardware is 0.*$gdb_prompt $"\
771 {pass "show disable fast watches"}
773 {fail "show disable fast watches"}
774 timeout {fail "(timeout) show disable fast watches"}
776 send_gdb "watch ival3 if count > 1\n"
778 -re "Watchpoint \[0-9\]*: ival3.*$gdb_prompt $"\
779 {pass "set slow conditional watch"}
781 {fail "set slow conditional watch"}
782 timeout {fail "(timeout) set slow conditional watch"}
784 send_gdb "continue\n"
786 -re "Watchpoint \[0-9\]*: ival3.*Old value = 1.*New value = 2.*$gdb_prompt $"\
787 {pass "trigger slow conditional watch"}
789 {fail "trigger slow conditional watch"}
790 timeout {fail "(timeout) trigger slow conditional watch"}
793 # We've explicitly disabled hardware watches. Verify that GDB
794 # refrains from using them.
796 send_gdb "rwatch ival3\n"
798 -re "Expression cannot be implemented with read/access watchpoint..*$gdb_prompt $"\
799 {pass "rwatch disallowed when can-set-hw-watchpoints cleared"}
801 {fail "rwatch disallowed when can-set-hw-watchpoints cleared"}
802 timeout {fail "(timeout) rwatch disallowed when can-use-hw-watchpoints cleared"}
805 # Read- and access watchpoints are unsupported on HP-UX. Verify
806 # that GDB gracefully responds to requests to create them.
808 if [istarget "hppa*-*-hpux*"] then {
809 send_gdb "set can-use-hw-watchpoints 1\n"
812 {pass "enable fast watches"}
813 timeout {fail "(timeout) enable fast watches"}
815 send_gdb "rwatch ival3\n"
817 -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
818 {pass "read watches disallowed"}
820 {fail "read watches disallowed"}
821 timeout {fail "(timeout) read watches disallowed"}
824 send_gdb "awatch ival3\n"
826 -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
827 {pass "access watches disallowed"}
829 {fail "access watches disallowed"}
830 timeout {fail "(timeout) access watches disallowed"}
834 test_inaccessible_watchpoint
837 if [istarget "mips-idt-*"] then {
840 gdb_reinitialize_dir $srcdir/$subdir
845 test_watchpoint_and_breakpoint
847 test_watchpoint_in_big_blob
850 # Restore old timeout
851 set timeout $prev_timeout
852 verbose "Timeout now $timeout sec.\n"