1 # Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2007
2 # 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 2 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, write to the Free Software
16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 # Please email any bugs, comments, and/or additions to this file to:
19 # bug-gdb@prep.ai.mit.edu
21 # This file was written by Fred Fish. (fnf@cygnus.com)
30 set testfile "watchpoint"
31 set srcfile ${testfile}.c
32 set binfile ${objdir}/${subdir}/${testfile}
36 if [get_compiler_info ${binfile}] {
40 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
41 untested watchpoint.exp
45 # Prepare for watchpoint tests by setting up two breakpoints and one
48 # We use breakpoints at marker functions to get past all the startup code,
49 # so we can get to the watchpoints in a reasonable amount of time from a
50 # known starting point.
52 # For simplicity, so we always know how to reference specific breakpoints or
53 # watchpoints by number, we expect a particular ordering and numbering of
54 # each in the combined breakpoint/watchpoint table, as follows:
57 # 1 Breakpoint marker1()
58 # 2 Breakpoint marker2()
68 # Disable hardware watchpoints if necessary.
69 if [target_info exists gdb,no_hardware_watchpoints] {
70 gdb_test "set can-use-hw-watchpoints 0" "" ""
73 if [gdb_test "break marker1" "Breakpoint 1 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker1" ] {
78 if [gdb_test "break marker2" "Breakpoint 2 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker2" ] {
83 if [gdb_test "info break" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*" "info break in watchpoint.exp" ] {
88 # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
89 # before running can cause the inferior to croak on HP-UX 11.0 for
90 # reasons yet unknown, we've disabled the ability to set watches
91 # without a running inferior. Verify the restriction.
93 send_gdb "watch ival3\n"
95 -re ".*\[Ww\]atchpoint 3: ival3.*$gdb_prompt $" {
96 pass "set watchpoint on ival3"
98 -re "warning: can't do that without a running program; try \"break main\", \"run\" first.*$gdb_prompt $" {
99 pass "set watchpoint on ival3"
104 fail "(timeout) set watchpoint on ival3"
109 # "info watch" is the same as "info break"
111 if [gdb_test "info watch" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*\r\n3\[ \]*.*watchpoint.*ival3" "watchpoint found in watchpoint/breakpoint table" ] {
116 # After installing the watchpoint, we disable it until we are ready
117 # to use it. This allows the test program to run at full speed until
118 # we get to the first marker function.
120 if [gdb_test "disable 3" "disable 3\[\r\n\]+" "disable watchpoint" ] {
129 # Test simple watchpoint.
132 proc test_simple_watchpoint {} {
138 # Ensure that the watchpoint is disabled when we startup.
141 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_simple_watchpoint" ] {
147 # Run until we get to the first marker function.
152 -re "Breakpoint 1, marker1 .*$gdb_prompt $" {
153 pass "run to marker1 in test_simple_watchpoint"
155 -re ".*$gdb_prompt $" {
156 fail "run to marker1 in test_simple_watchpoint"
160 fail "run to marker1 in test_simple_watchpoint (timeout)"
166 # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
167 # before running can cause the inferior to croak on HP-UX 11.0
168 # for reasons yet unknown, we've disabled the ability to set
169 # watches without a running inferior. The following testpoints used
170 # to be in [initialize].
172 send_gdb "watch ival3\n"
174 -re ".*\[Ww\]atchpoint 3: ival3\r\n$gdb_prompt $" {
175 pass "set watchpoint on ival3"
177 -re ".*$gdb_prompt $" { fail "set watchpoint on ival3" }
178 timeout { fail "set watchpoint on ival3 (timeout)" }
183 # "info watch" is the same as "info break"
185 send_gdb "info watch\n"
187 -re "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*\r\n3\[ \]*.*watchpoint.*ival3\r\n$gdb_prompt $" {
188 pass "watchpoint found in watchpoint/breakpoint table"
190 -re ".*$gdb_prompt $" {
191 fail "watchpoint found in watchpoint/breakpoint table"
194 fail "watchpoint found in watchpoint/breakpoint table"
198 # After installing the watchpoint, we disable it until we are ready
199 # to use it. This allows the test program to run at full speed until
200 # we get to the first marker function.
202 send_gdb "disable 3\n"
204 -re "disable 3\[\r\n\]+$gdb_prompt $" { pass "disable watchpoint" }
205 -re ".*$gdb_prompt $" { fail "disable watchpoint" }
206 timeout { fail "disable watchpoint (timeout)" }
210 # After reaching the marker function, enable the watchpoint.
212 if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "enable watchpoint" ] {
217 gdb_test "break func1" "Breakpoint.*at.*"
218 gdb_test "set \$func1_breakpoint_number = \$bpnum" ""
220 gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, func1.*" \
221 "continue to breakpoint at func1"
223 # Continue until the first change, from -1 to 0
227 -re "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count; ival4 = count;.*$gdb_prompt $" {
228 pass "watchpoint hit, first time"
230 -re "Continuing.*Breakpoint.*func1.*$gdb_prompt $" {
231 setup_xfail "m68*-*-*" 2597
232 fail "thought it hit breakpoint at func1 twice"
233 gdb_test "delete \$func1_breakpoint_number" ""
234 gdb_test "continue" "\
235 Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count;" \
236 "watchpoint hit, first time"
238 -re ".*$gdb_prompt $" { fail "watchpoint hit, first time" ; return }
239 timeout { fail "watchpoint hit, first time (timeout)" ; return }
240 eof { fail "watchpoint hit, first time (eof)" ; return }
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 1 time.*" "Watchpoint hit count is 1"
246 gdb_test "delete \$func1_breakpoint_number" ""
248 # Continue until the next change, from 0 to 1.
249 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit, second time"
251 # Check that the hit count is reported correctly
252 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 2 times.*" "Watchpoint hit count is 2"
254 # Continue until the next change, from 1 to 2.
255 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 1.*New value = 2.*ival3 = count; ival4 = count;.*" "watchpoint hit, third time"
257 # Check that the hit count is reported correctly
258 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 3 times.*" "Watchpoint hit count is 3"
260 # Continue until the next change, from 2 to 3.
261 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 2.*New value = 3.*ival3 = count; ival4 = count;.*" "watchpoint hit, fourth 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 4 times.*" "Watchpoint hit count is 4"
266 # Continue until the next change, from 3 to 4.
267 # Note that this one is outside the loop.
269 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 3.*New value = 4.*ival3 = count; ival4 = count;.*" "watchpoint hit, fifth time"
271 # Check that the hit count is reported correctly
272 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 5 times.*" "Watchpoint hit count is 5"
274 # Continue until we hit the finishing marker function.
275 # Make sure we hit no more watchpoints.
277 gdb_test "cont" "Continuing.*Breakpoint.*marker2 \(\).*" \
278 "continue to marker2"
280 # Disable the watchpoint so we run at full speed until we exit.
282 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "watchpoint disabled" ] {
287 # Run until process exits.
289 if [target_info exists gdb,noresults] { return }
291 gdb_continue_to_end "continue to exit in test_simple_watchpoint"
294 # Test disabling watchpoints.
296 proc test_disabling_watchpoints {} {
303 # "info watch" is the same as "info break"
304 gdb_test "info watch" "\[0-9\]+\[ \]*breakpoint.*marker1.*\r\n\[0-9\]+\[ \]*breakpoint.*marker2.*\r\n\[0-9]+\[ \]*.*watchpoint.*ival3\r\n\.*\[0-9\]+ times.*" "watchpoints found in watchpoint/breakpoint table"
306 # Ensure that the watchpoint is disabled when we startup.
308 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_disabling_watchpoints" ] {
313 # Run until we get to the first marker function.
318 -re "Breakpoint 1, marker1 .*$gdb_prompt $" {
319 pass "run to marker1 in test_disabling_watchpoints"
321 -re ".*$gdb_prompt $" {
322 fail "run to marker1 in test_disabling_watchpoints"
326 fail "run to marker1 in test_disabling_watchpoints (timeout)"
331 # After reaching the marker function, enable the watchpoint.
333 if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "watchpoint enabled" ] {
338 # Continue until the first change, from -1 to 0
339 # Don't check the old value, because on VxWorks the variable value
340 # will not have been reinitialized.
341 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = .*New value = 0.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, first time"
343 # Continue until the next change, from 0 to 1.
344 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"
346 # Disable the watchpoint but leave breakpoints
348 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint #2 in test_disabling_watchpoints" ] {
353 # Check watchpoint list, looking for the entry that confirms the
354 # watchpoint is disabled.
355 gdb_test "info watchpoints" "\[0-9]+\[ \]*.*watchpoint\[ \]*keep\[ \]*n\[ \]*ival3\r\n.*" "watchpoint disabled in table"
357 # Continue until we hit the finishing marker function.
358 # Make sure we hit no more watchpoints.
359 gdb_test "cont" "Continuing.*Breakpoint.*marker2 \\(\\).*" \
360 "disabled watchpoint skipped"
362 if [target_info exists gdb,noresults] { return }
364 gdb_continue_to_end "continue to exit in test_disabling_watchpoints"
367 # Test stepping and other mundane operations with watchpoints enabled
368 proc test_stepping {} {
371 if [runto marker1] then {
372 gdb_test "watch ival2" ".*\[Ww\]atchpoint \[0-9\]*: ival2"
374 # Well, let's not be too mundane. It should be a *bit* of a challenge
375 gdb_test "break func2 if 0" "Breakpoint.*at.*"
376 gdb_test "p \$func2_breakpoint_number = \$bpnum" " = .*"
378 gdb_test "p func1 ()" "= 73" \
379 "calling function with watchpoint enabled"
382 # "finish" brings us back to main.
383 # On some targets (e.g. alpha) gdb will stop from the finish in midline
384 # of the marker1 call. This is due to register restoring code on
385 # the alpha and might be caused by stack adjustment instructions
386 # on other targets. In this case we will step once more.
391 -re "Run.*exit from.*marker1.* at" {
392 pass "finish from marker1"
394 default { fail "finish from marker1 (timeout)" ; return }
398 -re "marker1 \\(\\);.*$gdb_prompt $" {
402 -re "func1 \\(\\);.*$gdb_prompt $" {
403 pass "back at main from marker1"
405 -re ".*$gdb_prompt $" {
406 fail "back at main from marker1"
408 default { fail "back at main from marker1 (timeout)" ; return }
411 gdb_test "next" "for \\(count = 0.*" "next to `for' in watchpoint.exp"
413 # Now test that "until" works. It's a bit tricky to test
414 # "until", because compilers don't always arrange the code
415 # exactly the same way, and we might get slightly different
416 # sequences of statements. But the following should be true
417 # (if not it is a compiler or a debugger bug): The user who
418 # does "until" at every statement of a loop should end up
419 # stepping through the loop once, and the debugger should not
420 # stop for any of the remaining iterations.
422 gdb_test "until" "ival1 = count.*" "until to ival1 assignment"
423 gdb_test "until" "ival3 = count.*" "until to ival3 assignment"
426 -re "(for \\(count = 0|\}).*$gdb_prompt $" {
427 gdb_test "until" "ival1 = count; /. Outside loop ./" \
430 -re "ival1 = count; /. Outside loop ./.*$gdb_prompt $" {
431 pass "until out of loop"
433 -re ".*$gdb_prompt $" {
434 fail "until out of loop"
436 default { fail "until out of loop (timeout)" ; return }
439 gdb_test "step" "ival2 = count.*" "step to ival2 assignment"
443 # Test stepping and other mundane operations with watchpoints enabled
444 proc test_watchpoint_triggered_in_syscall {} {
447 # These tests won't work without printf support.
448 if [gdb_skip_stdio_test "watchpoints triggered in syscall"] {
451 # Run until we get to the first marker function.
454 set testname "Watch buffer passed to read syscall"
455 if [runto marker2] then {
456 gdb_test "watch buf\[0\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[0\\\]"
457 gdb_test "watch buf\[1\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[1\\\]"
458 gdb_test "watch buf\[2\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[2\\\]"
459 gdb_test "watch buf\[3\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[3\\\]"
460 gdb_test "watch buf\[4\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[4\\\]"
461 gdb_test "break marker4" ".*Breakpoint.*"
463 gdb_test "set doread = 1" ""
465 # If we send_gdb "123\n" before gdb has switched the tty, then it goes
466 # to gdb, not the inferior, and we lose. So that is why we have
467 # watchpoint.c prompt us, so we can wait for that prompt.
468 send_gdb "continue\n";
470 -re "Continuing\\.\r\ntype stuff for buf now:" {
471 pass "continue to read"
474 fail "continue to read";
481 -re ".*\[Ww\]atchpoint.*buf\\\[0\\\].*Old value = 0.*New value = 49\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
482 -re ".*\[Ww\]atchpoint.*buf\\\[1\\\].*Old value = 0.*New value = 50\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
483 -re ".*\[Ww\]atchpoint.*buf\\\[2\\\].*Old value = 0.*New value = 51\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
484 -re ".*\[Ww\]atchpoint.*buf\\\[3\\\].*Old value = 0.*New value = 10\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
485 -re ".*$gdb_prompt $" { pass "sent 123" }
486 timeout { fail "sent 123 (timeout)" }
489 # Examine the values in buf to see how many watchpoints we
490 # should have printed.
491 send_gdb "print buf\[0\]\n"
493 -re ".*= 49.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[0\]"}
494 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[0\]"}
495 -re ".*$gdb_prompt $" { fail "print buf\[0\]"}
496 default { fail "print buf\[0\]"}
498 send_gdb "print buf\[1\]\n"
500 -re ".*= 50.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[1\]"}
501 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[1\]"}
502 -re ".*$gdb_prompt $" { fail "print buf\[1\]"}
503 default { fail "print buf\[1\]"}
505 send_gdb "print buf\[2\]\n"
507 -re ".*= 51.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[2\]"}
508 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[2\]"}
509 -re ".*$gdb_prompt $" { fail "print buf\[2\]"}
510 default { fail "print buf\[2\]"}
512 send_gdb "print buf\[3\]\n"
514 -re ".*= 10.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[3\]"}
515 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[3\]"}
516 -re ".*$gdb_prompt $" { fail "print buf\[3\]" }
517 default { fail "print buf\[3\]" }
520 # Did we find what we were looking for? If not, flunk it.
521 if [expr $x==$y] then { pass $testname } else { fail "$testname (only triggered $x watchpoints, expected $y)"}
523 # Continue until we hit the finishing marker function.
524 # Make sure we hit no more watchpoints.
525 gdb_test "cont" "Continuing.*Breakpoint.*marker4 \\(\\).*" \
526 "continue to marker4"
528 # Disable everything so we can finish the program at full speed
529 gdb_test "disable" "" "disable in test_watchpoint_triggered_in_syscall"
531 if [target_info exists gdb,noresults] { return }
533 gdb_continue_to_end "continue to exit in test_watchpoint_triggered_in_syscall"
537 # Do a simple test of of watching through a pointer when the pointer
538 # itself changes. Should add some more complicated stuff here.
540 proc test_complex_watchpoint {} {
543 if [runto marker4] then {
544 gdb_test "watch ptr1->val" ".*\[Ww\]atchpoint \[0-9\]*: ptr1->val"
545 gdb_test "break marker5" ".*Breakpoint.*"
547 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ptr1->val.*Old value = 1.*New value = 2.*" "Test complex watchpoint"
549 # Continue until we hit the marker5 function.
550 # Make sure we hit no more watchpoints.
552 gdb_test "cont" "Continuing.*Breakpoint.*marker5 \\(\\).*" \
553 "did not trigger wrong watchpoint"
555 # Test watches of things declared locally in a function.
556 # In particular, test that a watch of stack-based things
557 # is deleted when the stack-based things go out of scope.
559 gdb_test "disable" "" "disable in test_complex_watchpoint"
560 gdb_test "break marker6" ".*Breakpoint.*"
561 gdb_test "cont" "Continuing.*Breakpoint.*marker6 \\(\\).*" \
562 "continue to marker6"
563 gdb_test "break func2" ".*Breakpoint.*"
564 gdb_test "cont" "Continuing.*func2.*"
566 # Test a watch of a single stack-based variable, whose scope
567 # is the function we're now in. This should auto-delete when
568 # execution exits the scope of the watchpoint.
570 gdb_test "watch local_a" ".*\[Ww\]atchpoint \[0-9\]*: local_a" "set local watch"
571 gdb_test "cont" "\[Ww\]atchpoint.*local_a.*" "trigger local watch"
572 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" "self-delete local watch"
574 gdb_test "cont" "Continuing.*func2.*"
575 # We should be in "func2" again now. Test a watch of an
576 # expression which includes both a stack-based local and
577 # something whose scope is larger than this invocation
578 # of "func2". This should also auto-delete.
580 gdb_test "watch local_a + ival5" ".*\[Ww\]atchpoint \[0-9\]*: local_a . ival5" \
581 "set partially local watch"
582 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
583 "trigger1 partially local watch"
584 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
585 "trigger2 partially local watch"
586 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
587 "self-delete partially local watch"
589 # We should be in "func2" again now. Test a watch of a
590 # static (non-stack-based) local. Since this has scope
591 # across any invocations of "func2", it should not auto-
594 gdb_test "cont" "Continuing.*func2.*"
595 gdb_test "watch static_b" ".*\[Ww\]atchpoint \[0-9\]*: static_b" \
596 "set static local watch"
597 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: static_b.*" \
598 "trigger static local watch"
599 gdb_test "cont" "Continuing.*marker6 \\(\\).*" \
600 "continue after trigger static local watch"
601 gdb_test "info break" ".*watchpoint.*static_b.*" \
602 "static local watch did not self-delete"
604 # We should be in "recurser" now. Test a watch of a stack-
605 # based local. Symbols mentioned in a watchpoint are bound
606 # at watchpoint-creation. Thus, a watch of a stack-based
607 # local to a recursing function should be bound only to that
608 # one invocation, and should not trigger for other invocations.
610 gdb_test "tbreak recurser" ".*Breakpoint.*"
611 gdb_test "cont" "Continuing.*recurser.*"
612 gdb_test "watch local_x" ".*\[Ww\]atchpoint \[0-9\]*: local_x" \
613 "set local watch in recursive call"
614 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_x.*New value = 2.*" \
615 "trigger local watch in recursive call"
616 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
617 "self-delete local watch in recursive call"
619 # Disable everything so we can finish the program at full speed
620 gdb_test "disable" "" "disable in test_complex_watchpoint"
622 if [target_info exists gdb,noresults] { return }
624 gdb_continue_to_end "continue to exit in test_complex_watchpoint"
628 proc test_watchpoint_and_breakpoint {} {
631 # This is a test for PR gdb/38, which involves setting a
632 # watchpoint right after you've reached a breakpoint.
634 if [runto func3] then {
635 gdb_breakpoint [gdb_get_line_number "second x assignment"]
636 gdb_continue_to_breakpoint "second x assignment"
637 gdb_test "watch x" ".*atchpoint \[0-9\]+: x"
638 gdb_test_multiple "next" "next after watch x" {
639 -re ".*atchpoint \[0-9\]+: x\r\n\r\nOld value = 0\r\nNew value = 1\r\n.*$gdb_prompt $" {
640 pass "next after watch x"
642 -re "\[0-9\]+\[\t \]+y = 1;\r\n$gdb_prompt $" {
643 kfail "gdb/38" "next after watch x"
649 # Start with a fresh gdb.
653 gdb_reinitialize_dir $srcdir/$subdir
655 set prev_timeout $timeout
657 verbose "Timeout now 600 sec.\n"
659 if [initialize] then {
661 test_simple_watchpoint
663 # The IDT/sim monitor only has 8 (!) open files, of which it uses
664 # 4 (!). So we have to make sure one program exits before
665 # starting another one.
666 if [istarget "mips-idt-*"] then {
669 gdb_reinitialize_dir $srcdir/$subdir
674 test_disabling_watchpoints
677 if [istarget "mips-idt-*"] then {
680 gdb_reinitialize_dir $srcdir/$subdir
685 if ![target_info exists gdb,cannot_call_functions] {
689 if [istarget "mips-idt-*"] then {
692 gdb_reinitialize_dir $srcdir/$subdir
698 # Only enabled for some targets merely because it has not been tested
700 # On sparc-sun-sunos4.1.3, GDB was running all the way to the marker4
701 # breakpoint before stopping for the watchpoint. I don't know why.
702 if {[istarget "hppa*-*-*"]} then {
703 test_watchpoint_triggered_in_syscall
707 if [istarget "mips-idt-*"] then {
710 gdb_reinitialize_dir $srcdir/$subdir
715 # Only enabled for some targets merely because it has not been tested
717 if {[istarget "hppa*-*-*"] || \
718 [istarget "sparc*-*-sunos*"] || \
719 [istarget "m32r-*-*"]} then {
720 test_complex_watchpoint
723 # Verify that a user can force GDB to use "slow" watchpoints.
724 # (This proves rather little on kernels that don't support
725 # fast watchpoints, but still...)
727 if ![runto_main] then { fail "watch tests suppressed" }
729 send_gdb "set can-use-hw-watchpoints 0\n"
732 {pass "disable fast watches"}
733 timeout {fail "(timeout) disable fast watches"}
735 send_gdb "show can-use-hw-watchpoints\n"
737 -re "Debugger's willingness to use watchpoint hardware is 0.*$gdb_prompt $"\
738 {pass "show disable fast watches"}
740 {fail "show disable fast watches"}
741 timeout {fail "(timeout) show disable fast watches"}
743 send_gdb "watch ival3 if count > 1\n"
745 -re "Watchpoint \[0-9\]*: ival3.*$gdb_prompt $"\
746 {pass "set slow conditional watch"}
748 {fail "set slow conditional watch"}
749 timeout {fail "(timeout) set slow conditional watch"}
751 send_gdb "continue\n"
753 -re "Watchpoint \[0-9\]*: ival3.*Old value = 1.*New value = 2.*$gdb_prompt $"\
754 {pass "trigger slow conditional watch"}
756 {fail "trigger slow conditional watch"}
757 timeout {fail "(timeout) trigger slow conditional watch"}
760 # We've explicitly disabled hardware watches. Verify that GDB
761 # refrains from using them.
763 send_gdb "rwatch ival3\n"
765 -re "Expression cannot be implemented with read/access watchpoint..*$gdb_prompt $"\
766 {pass "rwatch disallowed when can-set-hw-watchpoints cleared"}
768 {fail "rwatch disallowed when can-set-hw-watchpoints cleared"}
769 timeout {fail "(timeout) rwatch disallowed when can-use-hw-watchpoints cleared"}
772 # Read- and access watchpoints are unsupported on HP-UX. Verify
773 # that GDB gracefully responds to requests to create them.
775 if [istarget "hppa*-*-hpux*"] then {
776 send_gdb "set can-use-hw-watchpoints 1\n"
779 {pass "enable fast watches"}
780 timeout {fail "(timeout) enable fast watches"}
782 send_gdb "rwatch ival3\n"
784 -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
785 {pass "read watches disallowed"}
787 {fail "read watches disallowed"}
788 timeout {fail "(timeout) read watches disallowed"}
791 send_gdb "awatch ival3\n"
793 -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
794 {pass "access watches disallowed"}
796 {fail "access watches disallowed"}
797 timeout {fail "(timeout) access watches disallowed"}
802 if [istarget "mips-idt-*"] then {
805 gdb_reinitialize_dir $srcdir/$subdir
810 test_watchpoint_and_breakpoint
813 # Restore old timeout
814 set timeout $prev_timeout
815 verbose "Timeout now $timeout sec.\n"