summaryrefslogtreecommitdiff
path: root/gdb/testsuite/gdb.hp/watch-hp.exp
blob: a1c3fc823f77a3862c0520dfca7c0775869af4a9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
# Copyright (C) 1992, 1994, 1997 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  

# Please email any bugs, comments, and/or additions to this file to:
# bug-gdb@prep.ai.mit.edu

# This file was written by Fred Fish. (fnf@cygnus.com)

if $tracelevel then {
    strace $tracelevel
}

set prms_id 0
set bug_id 0

set testfile "watch-hp"
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}
if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
}

if [get_compiler_info ${binfile}] {
    return -1;
}
if {[skip_hp_tests $gcc_compiled]} then { continue }

# Prepare for watchpoint tests by setting up two breakpoints and one
# watchpoint.
#
# We use breakpoints at marker functions to get past all the startup code,
# so we can get to the watchpoints in a reasonable amount of time from a
# known starting point.
#
# For simplicity, so we always know how to reference specific breakpoints or
# watchpoints by number, we expect a particular ordering and numbering of
# each in the combined breakpoint/watchpoint table, as follows:
#
#	Number		What		Where
#	1		Breakpoint	marker1()
#	2		Breakpoint	marker2()
#	3		Watchpoint	ival3

proc initialize {} {
    global gdb_prompt
    global hex
    global decimal
    global srcfile

    if [gdb_test "break marker1" "Breakpoint 1 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker1" ] { 
      return 0; 
    }


    if [gdb_test "break marker2" "Breakpoint 2 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker2" ] { 
      return 0; 
    }


    if [gdb_test "info break" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*" "info break in watchpoint.exp" ] { 
      return 0; 
    }

# ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
# before running can cause the inferior to croak on HP-UX 10.30 and
# 11.0 for reasons as yet unknown, we've disabled the ability to set
# watches without a running inferior.  Verify the restriction.
#
    send_gdb "watch ival3\n"
    gdb_expect {
        -re ".*can't do that without a running program; try \"break main\", \"run\" first.*$gdb_prompt $" {
	    pass "set watchpoint on ival3"
	}
	-re ".*$gdb_prompt $" { fail "set watchpoint on ival3"  }
	timeout { fail "set watchpoint on ival3 (timeout)"  }
    }


#    if [gdb_test "watch ival3" ".*\[Ww\]atchpoint 3: ival3" "set watchpoint on ival3" ] { 
#      return 0; 
#    }


    # "info watch" is the same as "info break"

#    if [gdb_test "info watch" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*\r\n3\[ \]*.*watchpoint.*ival3" "watchpoint found in watchpoint/breakpoint table" ] { 
#      return 0; 
#    }


    # After installing the watchpoint, we disable it until we are ready
    # to use it.  This allows the test program to run at full speed until
    # we get to the first marker function.

#    if [gdb_test "disable 3" "disable 3\[\r\n\]+" "disable watchpoint" ] { 
#      return 0; 
#    }


    return 1
}

#
# Test simple watchpoint.
#

proc test_simple_watchpoint {} {
    global gdb_prompt
    global hex
    global decimal

    # Ensure that the watchpoint is disabled when we startup.

#    if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_simple_watchpoint" ] { 
#      return 0; 
#    }


    # Run until we get to the first marker function.

    gdb_run_cmd
    set timeout 600
    gdb_expect {
	-re "Breakpoint 1, marker1 .*$gdb_prompt $" {
	    pass "run to marker1 in test_simple_watchpoint"
	}
	-re ".*$gdb_prompt $" {
	    fail "run to marker1 in test_simple_watchpoint"
	    return
	}
	timeout {
	    fail "run to marker1 in test_simple_watchpoint (timeout)"
	    return
	}
    }
#************************

# ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
# before running can cause the inferior to croak on HP-UX 10.30 and
# 11.0 for reasons as yet unknown, we've disabled the ability to set
# watches without a running inferior.  The following testpoints used
# to be in [initialize].
#
    send_gdb "watch ival3\n"
    gdb_expect {
	-re ".*\[Ww\]atchpoint 3: ival3\r\n$gdb_prompt $" { 
	    pass "set watchpoint on ival3"
	}
	-re ".*$gdb_prompt $" { fail "set watchpoint on ival3"  }
	timeout { fail "set watchpoint on ival3 (timeout)"  }
    }

    # "info watch" is the same as "info break"

    send_gdb "info watch\n"
    gdb_expect {
	-re "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*\r\n3\[ \]*.*watchpoint.*ival3\r\n$gdb_prompt $" {
	    pass "watchpoint found in watchpoint/breakpoint table"
	}
	-re ".*$gdb_prompt $" {
	    fail "watchpoint found in watchpoint/breakpoint table" 
	}
	timeout {
	   fail "watchpoint found in watchpoint/breakpoint table" 
	}
    }

    # After installing the watchpoint, we disable it until we are ready
    # to use it.  This allows the test program to run at full speed until
    # we get to the first marker function.

    send_gdb "disable 3\n"
    gdb_expect {
	-re "disable 3\[\r\n\]+$gdb_prompt $" { pass "disable watchpoint" }
	-re ".*$gdb_prompt $" { fail "disable watchpoint"  }
	timeout { fail "disable watchpoint (timeout)"  }
    }
#******
    # After reaching the marker function, enable the watchpoint.

    if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "enable watchpoint" ] { 
      return ; 
    }


    gdb_test "break func1" "Breakpoint.*at.*"
    gdb_test "set \$func1_breakpoint_number = \$bpnum" ""

    gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, func1.*" \
	"continue to breakpoint at func1"

    # Continue until the first change, from -1 to 0

    send_gdb "cont\n"
    gdb_expect {
	-re "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count; ival4 = count;.*$gdb_prompt $" {
	    pass "watchpoint hit, first time"
	}
	-re "Continuing.*Breakpoint.*func1.*$gdb_prompt $" {
	    setup_xfail "m68*-*-*" 2597
	    fail "thought it hit breakpoint at func1 twice"
	    gdb_test "delete \$func1_breakpoint_number" ""
	    gdb_test "continue" "\
Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count;" \
		"watchpoint hit, first time"
	}
	-re ".*$gdb_prompt $" { fail "watchpoint hit, first time" ; return }
	timeout { fail "watchpoint hit, first time (timeout)" ; return }
	eof { fail "watchpoint hit, first time (eof)" ; return }
    }

    gdb_test "delete \$func1_breakpoint_number" ""

    # Continue until the next change, from 0 to 1.
    gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit, second time"

    # Continue until the next change, from 1 to 2.
    gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 1.*New value = 2.*ival3 = count; ival4 = count;.*" "watchpoint hit, third time"
    
    # Continue until the next change, from 2 to 3.
    gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 2.*New value = 3.*ival3 = count; ival4 = count;.*" "watchpoint hit, fourth time"

    # Continue until the next change, from 3 to 4.
    # Note that this one is outside the loop.

    gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 3.*New value = 4.*ival3 = count; ival4 = count;.*" "watchpoint hit, fifth time"

    # Continue until we hit the finishing marker function.
    # Make sure we hit no more watchpoints.

    gdb_test "cont" "Continuing.*Breakpoint.*marker2 \(\).*" \
	"continue to marker2"

    # Disable the watchpoint so we run at full speed until we exit.

    if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "watchpoint disabled" ] { 
      return ; 
    }


    # Run until process exits.

    if [target_info exists gdb,noresults] { return }

    gdb_test "cont" "Continuing.*Program exited normally.*" \
	"continue to exit in test_simple_watchpoint"
}

# Test disabling watchpoints.

proc test_disabling_watchpoints {} {
    global gdb_prompt
    global binfile
    global srcfile
    global decimal
    global hex

    # Ensure that the watchpoint is disabled when we startup.

    if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_disabling_watchpoints" ] { 
      return 0; 
    }


    # Run until we get to the first marker function.

    gdb_run_cmd
    set timeout 600
    gdb_expect {
	-re "Breakpoint 1, marker1 .*$gdb_prompt $" {
	    pass "run to marker1 in test_disabling_watchpoints"
	}
	-re ".*$gdb_prompt $" {
	    fail "run to marker1 in test_disabling_watchpoints"
	    return
	}
	timeout {
	    fail "run to marker1 in test_disabling_watchpoints (timeout)"
	    return
	}
    }

    # After reaching the marker function, enable the watchpoint.

    if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "watchpoint enabled" ] { 
      return ; 
    }


    # Continue until the first change, from -1 to 0
    # Don't check the old value, because on VxWorks the variable value
    # will not have been reinitialized.
    gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = .*New value = 0.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, first time"
    
    # Continue until the next change, from 0 to 1.
    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"
    
    # Disable the watchpoint but leave breakpoints

    if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint #2 in test_disabling_watchpoints" ] { 
      return 0; 
    }


    # Check watchpoint list, looking for the entry that confirms the
    # watchpoint is disabled.
    gdb_test "info watchpoints" "3\[ \]*.*watchpoint\[ \]*keep\[ \]*n\[ \]*ival3\r\n.*" "watchpoint disabled in table"

    # Continue until we hit the finishing marker function.
    # Make sure we hit no more watchpoints.
    gdb_test "cont" "Continuing.*Breakpoint.*marker2 \\(\\).*" \
	"disabled watchpoint skipped"
    
    if [target_info exists gdb,noresults] { return }

    gdb_test "cont" "Continuing.*Program exited normally.*" \
	"continue to exit in test_disabling_watchpoints"
}

# Test stepping and other mundane operations with watchpoints enabled
proc test_stepping {} {
    global gdb_prompt

    if [runto marker1] then {
	gdb_test "watch ival2" ".*\[Ww\]atchpoint \[0-9\]*: ival2"

	# Well, let's not be too mundane.  It should be a *bit* of a challenge
	gdb_test "break func2 if 0" "Breakpoint.*at.*"
	gdb_test "p \$func2_breakpoint_number = \$bpnum" " = .*"

	# The HPPA has a problem here if it's not using hardware watchpoints
	if {[ istarget "hppa*-*-*" ] && ![ istarget "hppa*-*-*bsd*" ]} then {
	    # Don't actually try doing the call, if we do we can't continue.
	    setup_xfail "*-*-*"
	    fail "calling function with watchpoint enabled"
	} else {
	    # The problem is that GDB confuses stepping through the call
	    # dummy with hitting the breakpoint at the end of the call dummy.
	    # Will be fixed once all architectures define 
	    # CALL_DUMMY_BREAKPOINT_OFFSET.
	    setup_xfail "*-*-*"
	    # This doesn't occur if the call dummy starts with a call,
	    # because we are out of the dummy by the first time the inferior
	    # stops.
	    clear_xfail "d10v*-*-*"
	    clear_xfail "m68*-*-*"
	    clear_xfail "i*86*-*-*"
	    clear_xfail "vax-*-*"
	    # The following architectures define CALL_DUMMY_BREAKPOINT_OFFSET.
	    clear_xfail "alpha-*-*"
	    clear_xfail "mips*-*-*"
	    clear_xfail "sparc-*-*"
	    clear_xfail "hppa*-*-*bsd*"
	    # It works with the generic inferior function calling code too.
	    clear_xfail "mn10200*-*-*"
	    clear_xfail "mn10300*-*-*"
	    gdb_test "p func1 ()" "= 73" \
		"calling function with watchpoint enabled"
	}

	# 
	# "finish" brings us back to main.
	# On some targets (e.g. alpha) gdb will stop from the finish in midline
	# of the marker1 call. This is due to register restoring code on
	# the alpha and might be caused by stack adjustment instructions
	# on other targets. In this case we will step once more.
	#

	send_gdb "finish\n"
	gdb_expect {
	    -re "Run.*exit from.*marker1.* at" { }
	    default { fail "finish from marker1" ; return }
	}

	gdb_expect {
	    -re "marker1 \\(\\);.*$gdb_prompt $" {
		send_gdb "step\n"
		exp_continue
	    }
	    -re "func1 \\(\\);.*$gdb_prompt $" {
		pass "finish from marker1"
	    }
	    -re ".*$gdb_prompt $" {
		fail "finish from marker1"
	    }
	    default { fail "finish from marker1" ; return }
	}

	gdb_test "next" "for \\(count = 0.*" "next to `for' in watchpoint.exp"

	# Now test that "until" works.  It's a bit tricky to test
	# "until", because compilers don't always arrange the code
	# exactly the same way, and we might get slightly different
	# sequences of statements.  But the following should be true
	# (if not it is a compiler or a debugger bug): The user who
	# does "until" at every statement of a loop should end up
	# stepping through the loop once, and the debugger should not
	# stop for any of the remaining iterations.

	gdb_test "until" "ival1 = count.*" "until to ival1 assignment"
	gdb_test "until" "ival3 = count.*" "until to ival3 assignment"
	send_gdb "until\n"
	gdb_expect {
	    -re "(for \\(count = 0|\}).*$gdb_prompt $" {
		gdb_test "until" "ival1 = count; /. Outside loop ./" \
		    "until out of loop"
	    }
	    -re "ival1 = count; /. Outside loop ./.*$gdb_prompt $" {
		pass "until out of loop"
	    }
	    -re ".*$gdb_prompt $" {
		fail "until out of loop"
	    }
	    default { fail "until out of loop" ; return }
	}

	gdb_test "step" "ival2 = count.*" "step to ival2 assignment"
    }
}

# Test stepping and other mundane operations with watchpoints enabled
proc test_watchpoint_triggered_in_syscall {} {
    global gdb_prompt

    if [target_info exists gdb,noinferiorio] {
	verbose "Skipping test_watchpoint_triggered_in_syscall due to noinferiorio"
	return
    }
    # Run until we get to the first marker function.
    set x 0
    set y 0
    set testname "Watch buffer passed to read syscall"
    if [runto marker2] then {
	gdb_test "watch buf\[0\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[0\\\]"
	gdb_test "watch buf\[1\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[1\\\]"
	gdb_test "watch buf\[2\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[2\\\]"
	gdb_test "watch buf\[3\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[3\\\]"
	gdb_test "watch buf\[4\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[4\\\]"
	gdb_test "break marker4" ".*Breakpoint.*"

	gdb_test "set doread = 1" ""

	# If we send_gdb "123\n" before gdb has switched the tty, then it goes
	# to gdb, not the inferior, and we lose.  So that is why we have
	# watchpoint.c prompt us, so we can wait for that prompt.
	send_gdb "continue\n";
	gdb_expect {
	    -re "Continuing\\.\r\ntype stuff for buf now:" {
		pass "continue to read"
	    }
	    default {
		fail "continue to read";
		return ;
	    }
	}

	send_gdb "123\n"
	gdb_expect {
	    -re ".*\[Ww\]atchpoint.*buf\\\[0\\\].*Old value = 0.*New value = 49\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
	    -re ".*\[Ww\]atchpoint.*buf\\\[1\\\].*Old value = 0.*New value = 50\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
	    -re ".*\[Ww\]atchpoint.*buf\\\[2\\\].*Old value = 0.*New value = 51\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
	    -re ".*\[Ww\]atchpoint.*buf\\\[3\\\].*Old value = 0.*New value = 10\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
	    -re ".*$gdb_prompt $" { pass "sent 123" }
	    timeout { fail "sent 123 (timeout)" }
	}

	# Examine the values in buf to see how many watchpoints we
	# should have printed.
	send_gdb "print buf\[0\]\n"
	gdb_expect {
	    -re ".*= 49.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[0\]"}
	    -re ".*= 0.*$gdb_prompt $" { pass "print buf\[0\]"}
	    -re ".*$gdb_prompt $" { fail "print buf\[0\]"}
	    default { fail "print buf\[0\]"}
	}
	send_gdb "print buf\[1\]\n"
	gdb_expect {
	    -re ".*= 50.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[1\]"}
	    -re ".*= 0.*$gdb_prompt $" { pass "print buf\[1\]"}
	    -re ".*$gdb_prompt $" { fail "print buf\[1\]"}
	    default { fail "print buf\[1\]"}
	}
	send_gdb "print buf\[2\]\n"
	gdb_expect {
	    -re ".*= 51.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[2\]"}
	    -re ".*= 0.*$gdb_prompt $" { pass "print buf\[2\]"}
	    -re ".*$gdb_prompt $" { fail "print buf\[2\]"}
	    default { fail "print buf\[2\]"}
	}
	send_gdb "print buf\[3\]\n"
	gdb_expect {
	    -re ".*= 10.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[3\]"}
	    -re ".*= 0.*$gdb_prompt $" { pass "print buf\[3\]"}
	    -re ".*$gdb_prompt $" { fail "print buf\[3\]" }
	    default { fail "print buf\[3\]" }
	}

	# Did we find what we were looking for?  If not, flunk it.
	if [expr $x==$y] then { pass $testname } else { fail "$testname (only triggered $x watchpoints, expected $y)"}

	# Continue until we hit the finishing marker function.
	# Make sure we hit no more watchpoints.
	gdb_test "cont" "Continuing.*Breakpoint.*marker4 \\(\\).*" \
	    "continue to marker4"

	# Disable everything so we can finish the program at full speed
	gdb_test "disable" "" "disable in test_watchpoint_triggered_in_syscall"

	if [target_info exists gdb,noresults] { return }

	gdb_test "cont" "Continuing.*Program exited normally.*" \
	    "continue to exit in test_watchpoint_triggered_in_syscall"
    }
}

# Do a simple test of of watching through a pointer when the pointer
# itself changes.  Should add some more complicated stuff here.

proc test_complex_watchpoint {} {
    global gdb_prompt

    if [runto marker4] then {
	gdb_test "watch ptr1->val" ".*\[Ww\]atchpoint \[0-9\]*: ptr1->val"
	gdb_test "break marker5" ".*Breakpoint.*"

	gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ptr1->val.*Old value = 1.*New value = 2.*" "Test complex watchpoint"

	# Continue until we hit the marker5 function.
	# Make sure we hit no more watchpoints.

	gdb_test "cont" "Continuing.*Breakpoint.*marker5 \\(\\).*" \
	    "did not trigger wrong watchpoint"
#********************
        # Test watches of things declared locally in a function.
        # In particular, test that a watch of stack-based things
        # is deleted when the stack-based things go out of scope.
        #
	gdb_test "disable" "" "disable in test_complex_watchpoint"
        gdb_test "break marker6" ".*Breakpoint.*"
        gdb_test "cont" "Continuing.*Breakpoint.*marker6 \\(\\).*" \
            "continue to marker6"
        gdb_test "break func2" ".*Breakpoint.*"
        gdb_test "cont" "Continuing.*func2.*"

        # Test a watch of a single stack-based variable, whose scope
        # is the function we're now in.  This should auto-delete when
        # execution exits the scope of the watchpoint.
        #
        gdb_test "watch local_a" ".*\[Ww\]atchpoint \[0-9\]*: local_a" "set local watch"
        gdb_test "cont" "\[Ww\]atchpoint.*local_a.*" "trigger local watch"
        gdb_test "cont" "Continuing.*Watchpoint .* deleted because the program has left the block in.*which its expression is valid.*" "self-delete local watch"

	# after func2 returned, gdb stopped and deleted the watchpoint
	# we're now in main, let's get to func2
	gdb_test "cont" "Continuing.*func2.*"

        # We should be in "func2" again now.  Test a watch of an
        # expression which includes both a stack-based local and
        # something whose scope is larger than this invocation
        # of "func2".  This should also auto-delete.
        #
        gdb_test "watch local_a + ival5" ".*\[Ww\]atchpoint \[0-9\]*: local_a . ival5" \
                 "set partially local watch"
        gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
                 "trigger1 partially local watch"
        gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
                 "trigger2 partially local watch"
        gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
                 "self-delete partially local watch"

	# after func2 returned, gdb stopped and deleted the watchpoint
	# we're now in main, let's get to func2
	gdb_test "cont" "Continuing.*func2.*"

        # We should be in "func2" again now.  Test a watch of a
        # static (non-stack-based) local.  Since this has scope
        # across any invocations of "func2", it should not auto-
        # delete.
        #
        gdb_test "watch static_b" ".*\[Ww\]atchpoint \[0-9\]*: static_b" \
                 "set static local watch"
        gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: static_b.*" \
                 "trigger static local watch"
        gdb_test "cont" "Continuing.*marker6 \\(\\).*" \
                 "continue after trigger static local watch"
        gdb_test "info break" ".*watchpoint.*static_b.*" \
                 "static local watch did not self-delete"

        # We should be in "recurser" now.  Test a watch of a stack-
        # based local.  Symbols mentioned in a watchpoint are bound
        # at watchpoint-creation.  Thus, a watch of a stack-based
        # local to a recursing function should be bound only to that
        # one invocation, and should not trigger for other invocations.
        #
        gdb_test "tbreak recurser" ".*Breakpoint.*"
        gdb_test "cont" "Continuing.*recurser.*"
        gdb_test "watch local_x" ".*\[Ww\]atchpoint \[0-9\]*: local_x" \
                 "set local watch in recursive call"
        gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_x.*New value = 2.*" \
                 "trigger local watch in recursive call"
        gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
                 "self-delete local watch in recursive call"




#******************
	# Disable everything so we can finish the program at full speed
	gdb_test "disable" "" "disable in test_complex_watchpoint"

	if [target_info exists gdb,noresults] { return }


	gdb_test "cont" "Continuing.*Program exited normally.*" \
	    "continue to exit in test_complex_watchpoint"
    }
}

# Start with a fresh gdb.

gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load $binfile
set timeout 600	
verbose "Timeout now 600 sec.\n"

if [initialize] then {

    test_simple_watchpoint

    # The IDT/sim monitor only has 8 (!) open files, of which it uses
    # 4 (!).  So we have to make sure one program exits before
    # starting another one.
    if [istarget "mips-idt-*"] then {
	gdb_exit
	gdb_start
	gdb_reinitialize_dir $srcdir/$subdir
	gdb_load $binfile
	initialize
    }

    test_disabling_watchpoints

    # See above.
    if [istarget "mips-idt-*"] then {
	gdb_exit
	gdb_start
	gdb_reinitialize_dir $srcdir/$subdir
	gdb_load $binfile
	initialize
    }

    if ![target_info exists gdb,cannot_call_functions] {
	test_stepping

	# See above.
	if [istarget "mips-idt-*"] then {
	    gdb_exit
	    gdb_start
	    gdb_reinitialize_dir $srcdir/$subdir
	    gdb_load $binfile
	    initialize
	}
    }

    # Only enabled for some targets merely because it has not been tested 
    # elsewhere.
    # On sparc-sun-sunos4.1.3, GDB was running all the way to the marker4 
    # breakpoint before stopping for the watchpoint.  I don't know why.
    if {[istarget "hppa*-*-*"]} then {
	test_watchpoint_triggered_in_syscall
    }

    # See above.
    if [istarget "mips-idt-*"] then {
	gdb_exit
	gdb_start
	gdb_reinitialize_dir $srcdir/$subdir
	gdb_load $binfile
	initialize
    }

    # Only enabled for some targets merely because it has not been tested 
    # elsewhere.
    if {[istarget "hppa*-*-*"] || \
	    [istarget "sparc*-*-sunos*"] || \
	    [istarget "m32r-*-*"]} then {
	test_complex_watchpoint
#***************
    }

    # Verify that a user can force GDB to use "slow" watchpoints.
    # (This proves rather little on kernels that don't support
    # fast watchpoints, but still...)
    #
    if ![runto_main] then { fail "watch tests suppressed" }

    send_gdb "set can-use-hw-watchpoints 0\n"
    gdb_expect {
      -re "$gdb_prompt $"\
              {pass "disable fast watches"}
      timeout {fail "(timeout) disable fast watches"}
    }
    send_gdb "show can-use-hw-watchpoints\n"
    gdb_expect {
      -re "Debugger's willingness to use watchpoint hardware is 0.*$gdb_prompt $"\
              {pass "show disable fast watches"}
      -re "$gdb_prompt $"\
              {fail "show disable fast watches"}
      timeout {fail "(timeout) show disable fast watches"}
    }
    send_gdb "watch ival3 if  count > 1\n"
    gdb_expect {
      -re "Watchpoint \[0-9\]*: ival3.*$gdb_prompt $"\
              {pass "set slow conditional watch"}
      -re "$gdb_prompt $"\
              {fail "set slow conditional watch"}
      timeout {fail "(timeout) set slow conditional watch"}
    }
    send_gdb "continue\n"
    gdb_expect {
      -re "Watchpoint \[0-9\]*: ival3.*Old value = 1.*New value = 2.*$gdb_prompt $"\
              {pass "trigger slow conditional watch"}
      -re "$gdb_prompt $"\
              {fail "trigger slow conditional watch"}
      timeout {fail "(timeout) trigger slow conditional watch"}
    }

    # We've explicitly disabled hardware watches.  Verify that GDB
    # 
    #
    send_gdb "rwatch ival3\n"
    gdb_expect {
      -re "Expression cannot be implemented with read/access watchpoint..*$gdb_prompt $"\
              {pass "rwatch disallowed when can-set-hw-watchpoints cleared"}
      -re "$gdb_prompt $"\
              {fail "rwatch disallowed when can-set-hw-watchpoints cleared"}
      timeout {fail "(timeout) rwatch disallowed when can-use-hw-watchpoints cleared"}
    }

    # Read- and access watchpoints are unsupported on HP-UX.  Verify
    # that GDB gracefully responds to requests to create them.
    #
    if [istarget "hppa*-*-hpux*"] then {
      send_gdb "set can-use-hw-watchpoints 1\n"
      gdb_expect {
        -re "$gdb_prompt $"\
                {pass "enable fast watches"}
        timeout {fail "(timeout) enable fast watches"}
      }
      send_gdb "rwatch ival3\n"
      gdb_expect {
        -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
                {pass "read watches disallowed"}
        -re "$gdb_prompt $"\
                {fail "read watches disallowed"}
        timeout {fail "(timeout) read watches disallowed"}
      }

      send_gdb "awatch ival3\n"
      gdb_expect {
        -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
                {pass "access watches disallowed"}
        -re "$gdb_prompt $"\
                {fail "access watches disallowed"}
        timeout {fail "(timeout) access watches disallowed"}
      }

#***************
    }
}