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4c38e0a4 | 1 | # Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2007, 2008, 2009, |
7b6bb8da | 2 | # 2010, 2011 Free Software Foundation, Inc. |
c906108c SS |
3 | |
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 | |
e22f8b7c | 6 | # the Free Software Foundation; either version 3 of the License, or |
c906108c | 7 | # (at your option) any later version. |
e22f8b7c | 8 | # |
c906108c SS |
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. | |
e22f8b7c | 13 | # |
c906108c | 14 | # You should have received a copy of the GNU General Public License |
e22f8b7c | 15 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
c906108c | 16 | |
c906108c SS |
17 | # This file was written by Fred Fish. (fnf@cygnus.com) |
18 | ||
19 | if $tracelevel then { | |
20 | strace $tracelevel | |
21 | } | |
22 | ||
c906108c SS |
23 | |
24 | set testfile "watchpoint" | |
25 | set srcfile ${testfile}.c | |
26 | set binfile ${objdir}/${subdir}/${testfile} | |
27 | ||
085dd6e6 | 28 | set wp_set 1 |
c906108c SS |
29 | |
30 | if [get_compiler_info ${binfile}] { | |
31 | return -1 | |
32 | } | |
33 | ||
c906108c | 34 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { |
b60f0898 JB |
35 | untested watchpoint.exp |
36 | return -1 | |
c906108c SS |
37 | } |
38 | ||
39 | # Prepare for watchpoint tests by setting up two breakpoints and one | |
40 | # watchpoint. | |
41 | # | |
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. | |
45 | # | |
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: | |
49 | # | |
50 | # Number What Where | |
51 | # 1 Breakpoint marker1() | |
52 | # 2 Breakpoint marker2() | |
53 | # 3 Watchpoint ival3 | |
54 | ||
55 | proc initialize {} { | |
56 | global gdb_prompt | |
57 | global hex | |
58 | global decimal | |
59 | global srcfile | |
085dd6e6 | 60 | global wp_set |
c906108c | 61 | |
958a4e4c MS |
62 | # Disable hardware watchpoints if necessary. |
63 | if [target_info exists gdb,no_hardware_watchpoints] { | |
35ec993f | 64 | gdb_test_no_output "set can-use-hw-watchpoints 0" "" |
958a4e4c MS |
65 | } |
66 | ||
c906108c SS |
67 | if [gdb_test "break marker1" "Breakpoint 1 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker1" ] { |
68 | return 0; | |
69 | } | |
70 | ||
71 | ||
72 | if [gdb_test "break marker2" "Breakpoint 2 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker2" ] { | |
73 | return 0; | |
74 | } | |
75 | ||
76 | ||
77 | if [gdb_test "info break" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*" "info break in watchpoint.exp" ] { | |
78 | return 0; | |
79 | } | |
80 | ||
81 | ||
085dd6e6 | 82 | # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint |
a0b3c4fd JM |
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. | |
085dd6e6 JM |
86 | # |
87 | send_gdb "watch ival3\n" | |
88 | gdb_expect { | |
89 | -re ".*\[Ww\]atchpoint 3: ival3.*$gdb_prompt $" { | |
90 | pass "set watchpoint on ival3" | |
91 | } | |
92 | -re "warning: can't do that without a running program; try \"break main\", \"run\" first.*$gdb_prompt $" { | |
93 | pass "set watchpoint on ival3" | |
94 | set wp_set 0 | |
95 | return 1 | |
96 | } | |
97 | timeout { | |
98 | fail "(timeout) set watchpoint on ival3" | |
99 | return 0 | |
100 | } | |
c906108c SS |
101 | } |
102 | ||
d77f58be | 103 | if [gdb_test "info watch" "3\[ \]*.*watchpoint.*ival3" "watchpoint found in watchpoint/breakpoint table" ] { |
c906108c SS |
104 | return 0; |
105 | } | |
106 | ||
107 | ||
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. | |
111 | ||
112 | if [gdb_test "disable 3" "disable 3\[\r\n\]+" "disable watchpoint" ] { | |
113 | return 0; | |
114 | } | |
115 | ||
116 | ||
117 | return 1 | |
118 | } | |
119 | ||
120 | # | |
121 | # Test simple watchpoint. | |
122 | # | |
123 | ||
124 | proc test_simple_watchpoint {} { | |
125 | global gdb_prompt | |
126 | global hex | |
127 | global decimal | |
085dd6e6 | 128 | global wp_set |
c906108c SS |
129 | |
130 | # Ensure that the watchpoint is disabled when we startup. | |
131 | ||
085dd6e6 JM |
132 | if { $wp_set } { |
133 | if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_simple_watchpoint" ] { | |
134 | return 0; | |
135 | } | |
c906108c SS |
136 | } |
137 | ||
138 | ||
139 | # Run until we get to the first marker function. | |
140 | ||
141 | gdb_run_cmd | |
142 | set timeout 600 | |
143 | gdb_expect { | |
144 | -re "Breakpoint 1, marker1 .*$gdb_prompt $" { | |
145 | pass "run to marker1 in test_simple_watchpoint" | |
146 | } | |
147 | -re ".*$gdb_prompt $" { | |
148 | fail "run to marker1 in test_simple_watchpoint" | |
149 | return | |
150 | } | |
151 | timeout { | |
152 | fail "run to marker1 in test_simple_watchpoint (timeout)" | |
153 | return | |
154 | } | |
155 | } | |
156 | ||
085dd6e6 JM |
157 | if { !$wp_set } { |
158 | # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint | |
a0b3c4fd JM |
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 | |
085dd6e6 JM |
161 | # watches without a running inferior. The following testpoints used |
162 | # to be in [initialize]. | |
163 | # | |
02746bbc MS |
164 | gdb_test "watch ival3" \ |
165 | "\[Ww\]atchpoint 3: ival3" \ | |
166 | "set watchpoint on ival3" | |
085dd6e6 JM |
167 | |
168 | set wp_set 1 | |
169 | ||
02746bbc MS |
170 | gdb_test "info watch" \ |
171 | "3\[ \]*.*watchpoint.*ival3" \ | |
172 | "watchpoint found in watchpoint/breakpoint table" | |
085dd6e6 JM |
173 | |
174 | # After installing the watchpoint, we disable it until we are ready | |
175 | # to use it. This allows the test program to run at full speed until | |
176 | # we get to the first marker function. | |
177 | ||
02746bbc | 178 | gdb_test "disable 3" "disable 3" "disable watchpoint" |
085dd6e6 JM |
179 | } |
180 | ||
c906108c SS |
181 | # After reaching the marker function, enable the watchpoint. |
182 | ||
183 | if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "enable watchpoint" ] { | |
184 | return ; | |
185 | } | |
186 | ||
187 | ||
188 | gdb_test "break func1" "Breakpoint.*at.*" | |
27d3a1a2 | 189 | gdb_test_no_output "set \$func1_breakpoint_number = \$bpnum" |
c906108c SS |
190 | |
191 | gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, func1.*" \ | |
192 | "continue to breakpoint at func1" | |
193 | ||
194 | # Continue until the first change, from -1 to 0 | |
195 | ||
196 | send_gdb "cont\n" | |
197 | gdb_expect { | |
198 | -re "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count; ival4 = count;.*$gdb_prompt $" { | |
199 | pass "watchpoint hit, first time" | |
200 | } | |
201 | -re "Continuing.*Breakpoint.*func1.*$gdb_prompt $" { | |
202 | setup_xfail "m68*-*-*" 2597 | |
203 | fail "thought it hit breakpoint at func1 twice" | |
27d3a1a2 | 204 | gdb_test_no_output "delete \$func1_breakpoint_number" |
c906108c SS |
205 | gdb_test "continue" "\ |
206 | Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count;" \ | |
207 | "watchpoint hit, first time" | |
208 | } | |
209 | -re ".*$gdb_prompt $" { fail "watchpoint hit, first time" ; return } | |
210 | timeout { fail "watchpoint hit, first time (timeout)" ; return } | |
211 | eof { fail "watchpoint hit, first time (eof)" ; return } | |
212 | } | |
213 | ||
c2d11a7d JM |
214 | # Check that the hit count is reported correctly |
215 | gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 1 time.*" "Watchpoint hit count is 1" | |
216 | ||
27d3a1a2 | 217 | gdb_test_no_output "delete \$func1_breakpoint_number" |
c906108c SS |
218 | |
219 | # Continue until the next change, from 0 to 1. | |
220 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit, second time" | |
221 | ||
c2d11a7d JM |
222 | # Check that the hit count is reported correctly |
223 | gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 2 times.*" "Watchpoint hit count is 2" | |
224 | ||
c906108c SS |
225 | # Continue until the next change, from 1 to 2. |
226 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 1.*New value = 2.*ival3 = count; ival4 = count;.*" "watchpoint hit, third time" | |
c2d11a7d JM |
227 | |
228 | # Check that the hit count is reported correctly | |
229 | gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 3 times.*" "Watchpoint hit count is 3" | |
c906108c SS |
230 | |
231 | # Continue until the next change, from 2 to 3. | |
232 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 2.*New value = 3.*ival3 = count; ival4 = count;.*" "watchpoint hit, fourth time" | |
233 | ||
c2d11a7d JM |
234 | # Check that the hit count is reported correctly |
235 | gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 4 times.*" "Watchpoint hit count is 4" | |
236 | ||
c906108c SS |
237 | # Continue until the next change, from 3 to 4. |
238 | # Note that this one is outside the loop. | |
239 | ||
240 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 3.*New value = 4.*ival3 = count; ival4 = count;.*" "watchpoint hit, fifth time" | |
241 | ||
c2d11a7d JM |
242 | # Check that the hit count is reported correctly |
243 | gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 5 times.*" "Watchpoint hit count is 5" | |
244 | ||
c906108c SS |
245 | # Continue until we hit the finishing marker function. |
246 | # Make sure we hit no more watchpoints. | |
247 | ||
248 | gdb_test "cont" "Continuing.*Breakpoint.*marker2 \(\).*" \ | |
249 | "continue to marker2" | |
250 | ||
251 | # Disable the watchpoint so we run at full speed until we exit. | |
252 | ||
253 | if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "watchpoint disabled" ] { | |
254 | return ; | |
255 | } | |
256 | ||
257 | ||
258 | # Run until process exits. | |
259 | ||
260 | if [target_info exists gdb,noresults] { return } | |
261 | ||
7a292a7a | 262 | gdb_continue_to_end "continue to exit in test_simple_watchpoint" |
c906108c SS |
263 | } |
264 | ||
265 | # Test disabling watchpoints. | |
266 | ||
267 | proc test_disabling_watchpoints {} { | |
268 | global gdb_prompt | |
269 | global binfile | |
270 | global srcfile | |
271 | global decimal | |
272 | global hex | |
273 | ||
085dd6e6 | 274 | # "info watch" is the same as "info break" |
d77f58be | 275 | gdb_test "info watch" "\[0-9]+\[ \]*.*watchpoint.*ival3\r\n\.*\[0-9\]+ times.*" "watchpoints found in watchpoint/breakpoint table" |
085dd6e6 | 276 | |
c906108c SS |
277 | # Ensure that the watchpoint is disabled when we startup. |
278 | ||
279 | if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_disabling_watchpoints" ] { | |
280 | return 0; | |
281 | } | |
282 | ||
283 | ||
284 | # Run until we get to the first marker function. | |
285 | ||
286 | gdb_run_cmd | |
287 | set timeout 600 | |
288 | gdb_expect { | |
289 | -re "Breakpoint 1, marker1 .*$gdb_prompt $" { | |
290 | pass "run to marker1 in test_disabling_watchpoints" | |
291 | } | |
292 | -re ".*$gdb_prompt $" { | |
293 | fail "run to marker1 in test_disabling_watchpoints" | |
294 | return | |
295 | } | |
296 | timeout { | |
297 | fail "run to marker1 in test_disabling_watchpoints (timeout)" | |
298 | return | |
299 | } | |
300 | } | |
301 | ||
302 | # After reaching the marker function, enable the watchpoint. | |
303 | ||
304 | if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "watchpoint enabled" ] { | |
305 | return ; | |
306 | } | |
307 | ||
308 | ||
309 | # Continue until the first change, from -1 to 0 | |
310 | # Don't check the old value, because on VxWorks the variable value | |
311 | # will not have been reinitialized. | |
312 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = .*New value = 0.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, first time" | |
313 | ||
314 | # Continue until the next change, from 0 to 1. | |
315 | 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" | |
316 | ||
317 | # Disable the watchpoint but leave breakpoints | |
318 | ||
319 | if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint #2 in test_disabling_watchpoints" ] { | |
320 | return 0; | |
321 | } | |
322 | ||
323 | ||
324 | # Check watchpoint list, looking for the entry that confirms the | |
325 | # watchpoint is disabled. | |
085dd6e6 | 326 | gdb_test "info watchpoints" "\[0-9]+\[ \]*.*watchpoint\[ \]*keep\[ \]*n\[ \]*ival3\r\n.*" "watchpoint disabled in table" |
c906108c SS |
327 | |
328 | # Continue until we hit the finishing marker function. | |
329 | # Make sure we hit no more watchpoints. | |
330 | gdb_test "cont" "Continuing.*Breakpoint.*marker2 \\(\\).*" \ | |
331 | "disabled watchpoint skipped" | |
332 | ||
333 | if [target_info exists gdb,noresults] { return } | |
334 | ||
7a292a7a | 335 | gdb_continue_to_end "continue to exit in test_disabling_watchpoints" |
c906108c SS |
336 | } |
337 | ||
338 | # Test stepping and other mundane operations with watchpoints enabled | |
339 | proc test_stepping {} { | |
340 | global gdb_prompt | |
341 | ||
342 | if [runto marker1] then { | |
343 | gdb_test "watch ival2" ".*\[Ww\]atchpoint \[0-9\]*: ival2" | |
344 | ||
345 | # Well, let's not be too mundane. It should be a *bit* of a challenge | |
346 | gdb_test "break func2 if 0" "Breakpoint.*at.*" | |
347 | gdb_test "p \$func2_breakpoint_number = \$bpnum" " = .*" | |
348 | ||
085dd6e6 | 349 | gdb_test "p func1 ()" "= 73" \ |
4b2b3b3e | 350 | "calling function with watchpoint enabled" |
c906108c SS |
351 | |
352 | # | |
353 | # "finish" brings us back to main. | |
354 | # On some targets (e.g. alpha) gdb will stop from the finish in midline | |
355 | # of the marker1 call. This is due to register restoring code on | |
356 | # the alpha and might be caused by stack adjustment instructions | |
357 | # on other targets. In this case we will step once more. | |
358 | # | |
359 | ||
360 | send_gdb "finish\n" | |
361 | gdb_expect { | |
2df3850c JM |
362 | -re "Run.*exit from.*marker1.* at" { |
363 | pass "finish from marker1" | |
364 | } | |
dfcd3bfb | 365 | default { fail "finish from marker1 (timeout)" ; return } |
c906108c SS |
366 | } |
367 | ||
368 | gdb_expect { | |
369 | -re "marker1 \\(\\);.*$gdb_prompt $" { | |
370 | send_gdb "step\n" | |
371 | exp_continue | |
372 | } | |
373 | -re "func1 \\(\\);.*$gdb_prompt $" { | |
dfcd3bfb | 374 | pass "back at main from marker1" |
c906108c SS |
375 | } |
376 | -re ".*$gdb_prompt $" { | |
dfcd3bfb | 377 | fail "back at main from marker1" |
c906108c | 378 | } |
dfcd3bfb | 379 | default { fail "back at main from marker1 (timeout)" ; return } |
c906108c SS |
380 | } |
381 | ||
382 | gdb_test "next" "for \\(count = 0.*" "next to `for' in watchpoint.exp" | |
383 | ||
384 | # Now test that "until" works. It's a bit tricky to test | |
385 | # "until", because compilers don't always arrange the code | |
386 | # exactly the same way, and we might get slightly different | |
387 | # sequences of statements. But the following should be true | |
388 | # (if not it is a compiler or a debugger bug): The user who | |
389 | # does "until" at every statement of a loop should end up | |
390 | # stepping through the loop once, and the debugger should not | |
391 | # stop for any of the remaining iterations. | |
392 | ||
393 | gdb_test "until" "ival1 = count.*" "until to ival1 assignment" | |
394 | gdb_test "until" "ival3 = count.*" "until to ival3 assignment" | |
395 | send_gdb "until\n" | |
396 | gdb_expect { | |
397 | -re "(for \\(count = 0|\}).*$gdb_prompt $" { | |
398 | gdb_test "until" "ival1 = count; /. Outside loop ./" \ | |
399 | "until out of loop" | |
400 | } | |
401 | -re "ival1 = count; /. Outside loop ./.*$gdb_prompt $" { | |
402 | pass "until out of loop" | |
403 | } | |
404 | -re ".*$gdb_prompt $" { | |
405 | fail "until out of loop" | |
406 | } | |
c4093a6a | 407 | default { fail "until out of loop (timeout)" ; return } |
c906108c SS |
408 | } |
409 | ||
410 | gdb_test "step" "ival2 = count.*" "step to ival2 assignment" | |
411 | } | |
412 | } | |
413 | ||
414 | # Test stepping and other mundane operations with watchpoints enabled | |
415 | proc test_watchpoint_triggered_in_syscall {} { | |
416 | global gdb_prompt | |
417 | ||
958a4e4c MS |
418 | # These tests won't work without printf support. |
419 | if [gdb_skip_stdio_test "watchpoints triggered in syscall"] { | |
420 | return; | |
c906108c SS |
421 | } |
422 | # Run until we get to the first marker function. | |
423 | set x 0 | |
424 | set y 0 | |
425 | set testname "Watch buffer passed to read syscall" | |
426 | if [runto marker2] then { | |
427 | gdb_test "watch buf\[0\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[0\\\]" | |
428 | gdb_test "watch buf\[1\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[1\\\]" | |
429 | gdb_test "watch buf\[2\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[2\\\]" | |
430 | gdb_test "watch buf\[3\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[3\\\]" | |
431 | gdb_test "watch buf\[4\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[4\\\]" | |
432 | gdb_test "break marker4" ".*Breakpoint.*" | |
433 | ||
27d3a1a2 | 434 | gdb_test_no_output "set doread = 1" |
c906108c SS |
435 | |
436 | # If we send_gdb "123\n" before gdb has switched the tty, then it goes | |
437 | # to gdb, not the inferior, and we lose. So that is why we have | |
438 | # watchpoint.c prompt us, so we can wait for that prompt. | |
02746bbc | 439 | |
c906108c SS |
440 | send_gdb "continue\n"; |
441 | gdb_expect { | |
442 | -re "Continuing\\.\r\ntype stuff for buf now:" { | |
443 | pass "continue to read" | |
444 | } | |
445 | default { | |
446 | fail "continue to read"; | |
447 | return ; | |
448 | } | |
449 | } | |
450 | ||
451 | send_gdb "123\n" | |
452 | gdb_expect { | |
453 | -re ".*\[Ww\]atchpoint.*buf\\\[0\\\].*Old value = 0.*New value = 49\[^\n\]*\n" { set x [expr $x+1] ; exp_continue } | |
454 | -re ".*\[Ww\]atchpoint.*buf\\\[1\\\].*Old value = 0.*New value = 50\[^\n\]*\n" { set x [expr $x+1] ; exp_continue } | |
455 | -re ".*\[Ww\]atchpoint.*buf\\\[2\\\].*Old value = 0.*New value = 51\[^\n\]*\n" { set x [expr $x+1] ; exp_continue } | |
456 | -re ".*\[Ww\]atchpoint.*buf\\\[3\\\].*Old value = 0.*New value = 10\[^\n\]*\n" { set x [expr $x+1] ; exp_continue } | |
457 | -re ".*$gdb_prompt $" { pass "sent 123" } | |
458 | timeout { fail "sent 123 (timeout)" } | |
459 | } | |
460 | ||
461 | # Examine the values in buf to see how many watchpoints we | |
462 | # should have printed. | |
463 | send_gdb "print buf\[0\]\n" | |
464 | gdb_expect { | |
465 | -re ".*= 49.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[0\]"} | |
466 | -re ".*= 0.*$gdb_prompt $" { pass "print buf\[0\]"} | |
467 | -re ".*$gdb_prompt $" { fail "print buf\[0\]"} | |
468 | default { fail "print buf\[0\]"} | |
469 | } | |
470 | send_gdb "print buf\[1\]\n" | |
471 | gdb_expect { | |
472 | -re ".*= 50.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[1\]"} | |
473 | -re ".*= 0.*$gdb_prompt $" { pass "print buf\[1\]"} | |
474 | -re ".*$gdb_prompt $" { fail "print buf\[1\]"} | |
475 | default { fail "print buf\[1\]"} | |
476 | } | |
477 | send_gdb "print buf\[2\]\n" | |
478 | gdb_expect { | |
479 | -re ".*= 51.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[2\]"} | |
480 | -re ".*= 0.*$gdb_prompt $" { pass "print buf\[2\]"} | |
481 | -re ".*$gdb_prompt $" { fail "print buf\[2\]"} | |
482 | default { fail "print buf\[2\]"} | |
483 | } | |
484 | send_gdb "print buf\[3\]\n" | |
485 | gdb_expect { | |
486 | -re ".*= 10.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[3\]"} | |
487 | -re ".*= 0.*$gdb_prompt $" { pass "print buf\[3\]"} | |
488 | -re ".*$gdb_prompt $" { fail "print buf\[3\]" } | |
489 | default { fail "print buf\[3\]" } | |
490 | } | |
491 | ||
492 | # Did we find what we were looking for? If not, flunk it. | |
493 | if [expr $x==$y] then { pass $testname } else { fail "$testname (only triggered $x watchpoints, expected $y)"} | |
494 | ||
495 | # Continue until we hit the finishing marker function. | |
496 | # Make sure we hit no more watchpoints. | |
497 | gdb_test "cont" "Continuing.*Breakpoint.*marker4 \\(\\).*" \ | |
498 | "continue to marker4" | |
499 | ||
500 | # Disable everything so we can finish the program at full speed | |
27d3a1a2 | 501 | gdb_test_no_output "disable" "disable in test_watchpoint_triggered_in_syscall" |
c906108c SS |
502 | |
503 | if [target_info exists gdb,noresults] { return } | |
504 | ||
7a292a7a | 505 | gdb_continue_to_end "continue to exit in test_watchpoint_triggered_in_syscall" |
c906108c SS |
506 | } |
507 | } | |
508 | ||
509 | # Do a simple test of of watching through a pointer when the pointer | |
510 | # itself changes. Should add some more complicated stuff here. | |
511 | ||
512 | proc test_complex_watchpoint {} { | |
513 | global gdb_prompt | |
514 | ||
515 | if [runto marker4] then { | |
516 | gdb_test "watch ptr1->val" ".*\[Ww\]atchpoint \[0-9\]*: ptr1->val" | |
517 | gdb_test "break marker5" ".*Breakpoint.*" | |
518 | ||
519 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ptr1->val.*Old value = 1.*New value = 2.*" "Test complex watchpoint" | |
520 | ||
521 | # Continue until we hit the marker5 function. | |
522 | # Make sure we hit no more watchpoints. | |
523 | ||
524 | gdb_test "cont" "Continuing.*Breakpoint.*marker5 \\(\\).*" \ | |
525 | "did not trigger wrong watchpoint" | |
526 | ||
085dd6e6 JM |
527 | # Test watches of things declared locally in a function. |
528 | # In particular, test that a watch of stack-based things | |
529 | # is deleted when the stack-based things go out of scope. | |
530 | # | |
27d3a1a2 | 531 | gdb_test_no_output "disable" "disable in test_complex_watchpoint" |
085dd6e6 JM |
532 | gdb_test "break marker6" ".*Breakpoint.*" |
533 | gdb_test "cont" "Continuing.*Breakpoint.*marker6 \\(\\).*" \ | |
534 | "continue to marker6" | |
535 | gdb_test "break func2" ".*Breakpoint.*" | |
536 | gdb_test "cont" "Continuing.*func2.*" | |
537 | ||
538 | # Test a watch of a single stack-based variable, whose scope | |
539 | # is the function we're now in. This should auto-delete when | |
540 | # execution exits the scope of the watchpoint. | |
541 | # | |
542 | gdb_test "watch local_a" ".*\[Ww\]atchpoint \[0-9\]*: local_a" "set local watch" | |
543 | gdb_test "cont" "\[Ww\]atchpoint.*local_a.*" "trigger local watch" | |
544 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" "self-delete local watch" | |
545 | ||
546 | gdb_test "cont" "Continuing.*func2.*" | |
547 | # We should be in "func2" again now. Test a watch of an | |
548 | # expression which includes both a stack-based local and | |
549 | # something whose scope is larger than this invocation | |
550 | # of "func2". This should also auto-delete. | |
551 | # | |
552 | gdb_test "watch local_a + ival5" ".*\[Ww\]atchpoint \[0-9\]*: local_a . ival5" \ | |
553 | "set partially local watch" | |
554 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \ | |
555 | "trigger1 partially local watch" | |
556 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \ | |
557 | "trigger2 partially local watch" | |
558 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \ | |
559 | "self-delete partially local watch" | |
560 | ||
561 | # We should be in "func2" again now. Test a watch of a | |
562 | # static (non-stack-based) local. Since this has scope | |
563 | # across any invocations of "func2", it should not auto- | |
564 | # delete. | |
565 | # | |
566 | gdb_test "cont" "Continuing.*func2.*" | |
567 | gdb_test "watch static_b" ".*\[Ww\]atchpoint \[0-9\]*: static_b" \ | |
568 | "set static local watch" | |
569 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: static_b.*" \ | |
570 | "trigger static local watch" | |
571 | gdb_test "cont" "Continuing.*marker6 \\(\\).*" \ | |
572 | "continue after trigger static local watch" | |
573 | gdb_test "info break" ".*watchpoint.*static_b.*" \ | |
574 | "static local watch did not self-delete" | |
575 | ||
576 | # We should be in "recurser" now. Test a watch of a stack- | |
577 | # based local. Symbols mentioned in a watchpoint are bound | |
578 | # at watchpoint-creation. Thus, a watch of a stack-based | |
579 | # local to a recursing function should be bound only to that | |
580 | # one invocation, and should not trigger for other invocations. | |
581 | # | |
18ac113b | 582 | gdb_test "tbreak recurser" ".*breakpoint.*" |
085dd6e6 JM |
583 | gdb_test "cont" "Continuing.*recurser.*" |
584 | gdb_test "watch local_x" ".*\[Ww\]atchpoint \[0-9\]*: local_x" \ | |
585 | "set local watch in recursive call" | |
586 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_x.*New value = 2.*" \ | |
587 | "trigger local watch in recursive call" | |
588 | gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \ | |
589 | "self-delete local watch in recursive call" | |
590 | ||
c906108c | 591 | # Disable everything so we can finish the program at full speed |
27d3a1a2 | 592 | gdb_test_no_output "disable" "disable in test_complex_watchpoint" |
c906108c SS |
593 | |
594 | if [target_info exists gdb,noresults] { return } | |
595 | ||
085dd6e6 | 596 | gdb_continue_to_end "continue to exit in test_complex_watchpoint" |
c906108c SS |
597 | } |
598 | } | |
599 | ||
293e9a31 DC |
600 | proc test_watchpoint_and_breakpoint {} { |
601 | global gdb_prompt | |
602 | ||
603 | # This is a test for PR gdb/38, which involves setting a | |
604 | # watchpoint right after you've reached a breakpoint. | |
605 | ||
606 | if [runto func3] then { | |
607 | gdb_breakpoint [gdb_get_line_number "second x assignment"] | |
608 | gdb_continue_to_breakpoint "second x assignment" | |
609 | gdb_test "watch x" ".*atchpoint \[0-9\]+: x" | |
610 | gdb_test_multiple "next" "next after watch x" { | |
611 | -re ".*atchpoint \[0-9\]+: x\r\n\r\nOld value = 0\r\nNew value = 1\r\n.*$gdb_prompt $" { | |
612 | pass "next after watch x" | |
613 | } | |
614 | -re "\[0-9\]+\[\t \]+y = 1;\r\n$gdb_prompt $" { | |
615 | kfail "gdb/38" "next after watch x" | |
616 | } | |
617 | } | |
06a64a0b TT |
618 | |
619 | gdb_test_no_output "delete \$bpnum" "delete watch x" | |
293e9a31 DC |
620 | } |
621 | } | |
65d79d4b SDJ |
622 | |
623 | proc test_constant_watchpoint {} { | |
624 | gdb_test "watch 5" "Cannot watch constant value `5'." "number is constant" | |
625 | gdb_test "watch marker1" "Cannot watch constant value `marker1'." \ | |
626 | "marker1 is constant" | |
627 | gdb_test "watch count + 6" ".*atchpoint \[0-9\]+: count \\+ 6" | |
628 | gdb_test_no_output "delete \$bpnum" "delete watchpoint `count + 6'" | |
629 | gdb_test "watch 7 + count" ".*atchpoint \[0-9\]+: 7 \\+ count" | |
630 | gdb_test_no_output "delete \$bpnum" "delete watchpoint `7 + count'" | |
631 | } | |
632 | ||
06a64a0b TT |
633 | proc test_watch_location {} { |
634 | gdb_breakpoint [gdb_get_line_number "func5 breakpoint here"] | |
635 | gdb_continue_to_breakpoint "func5 breakpoint here" | |
636 | ||
637 | gdb_test "watch -location *x" "atchpoint .*: .*" "watch -location .x" | |
638 | ||
639 | gdb_test "continue" \ | |
640 | "Continuing.*\[Ww\]atchpoint .*: .*New value = 27.*" \ | |
641 | "continue with watch -location" | |
642 | ||
643 | gdb_test_no_output "delete \$bpnum" "delete watch -location" | |
644 | } | |
645 | ||
fa4727a6 DJ |
646 | proc test_inaccessible_watchpoint {} { |
647 | global gdb_prompt | |
648 | ||
649 | # This is a test for watchpoints on currently inaccessible (but later | |
650 | # valid) memory. | |
651 | ||
652 | if [runto func4] then { | |
ccc57cf9 PA |
653 | # Make sure we only allow memory access errors. |
654 | set msg "watchpoint refused to insert on nonexistent struct member" | |
655 | gdb_test_multiple "watch struct1.nosuchmember" $msg { | |
656 | -re ".*atchpoint \[0-9\]+: struct1.nosuchmember.*$gdb_prompt $" { | |
657 | # PR breakpoints/9681 | |
658 | fail $msg | |
659 | } | |
660 | -re "There is no member named nosuchmember\\..*$gdb_prompt $" { | |
661 | pass $msg | |
662 | } | |
663 | } | |
664 | ||
8464be76 DJ |
665 | # See whether a watchpoint on a normal variable is a hardware |
666 | # watchpoint or not. The watchpoints on NULL should be hardware | |
667 | # iff this one is. | |
668 | set watchpoint_msg "Watchpoint" | |
669 | gdb_test_multiple "watch global_ptr" "watch global_ptr" { | |
670 | -re "Watchpoint \[0-9\]+: global_ptr\r\n.*$gdb_prompt $" { | |
671 | pass "watch global_ptr" | |
672 | } | |
673 | -re "Hardware watchpoint \[0-9\]+: global_ptr\r\n.*$gdb_prompt $" { | |
674 | set watchpoint_msg "Hardware watchpoint" | |
675 | pass "watch global_ptr" | |
676 | } | |
677 | } | |
678 | delete_breakpoints | |
679 | ||
680 | # Make sure that we can watch a constant address, and correctly | |
681 | # use a HW watchpoint if supported. | |
682 | gdb_test "watch *(int *) 0" \ | |
683 | "$watchpoint_msg \[0-9\]+: \\*\\(int \\*\\) 0" | |
684 | delete_breakpoints | |
685 | ||
a1442452 PA |
686 | # The same, but using -location through an indirection. |
687 | gdb_test "watch -location *global_ptr" \ | |
688 | "$watchpoint_msg \[0-9\]+: \-location: \\*global_ptr" | |
689 | delete_breakpoints | |
690 | ||
efd11a33 JK |
691 | # This step requires two HW watchpoints. Since PPC Server only has |
692 | # a single one, it will use a SW watchpoint in this case. | |
693 | if [istarget powerpc64-*] { | |
694 | set watchpoint_msg "Watchpoint" | |
695 | } | |
696 | ||
697 | gdb_test "watch *global_ptr" "$watchpoint_msg \[0-9\]+: \\\*global_ptr" | |
65d79d4b SDJ |
698 | gdb_test "set \$global_ptr_breakpoint_number = \$bpnum" "" |
699 | gdb_test "next" ".*global_ptr = buf.*" "global_ptr next" | |
fa4727a6 DJ |
700 | gdb_test_multiple "next" "next over ptr init" { |
701 | -re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = .*\r\nNew value = 3 .*\r\n.*$gdb_prompt $" { | |
702 | # We can not test for <unknown> here because NULL may be readable. | |
703 | # This test does rely on *NULL != 3. | |
704 | pass "next over ptr init" | |
705 | } | |
706 | } | |
707 | gdb_test_multiple "next" "next over buffer set" { | |
708 | -re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = 3 .*\r\nNew value = 7 .*\r\n.*$gdb_prompt $" { | |
709 | pass "next over buffer set" | |
710 | } | |
711 | } | |
65d79d4b SDJ |
712 | gdb_test "delete \$global_ptr_breakpoint_number" "" |
713 | gdb_test "watch **global_ptr_ptr" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr" | |
714 | gdb_test "set \$global_ptr_ptr_breakpoint_number = \$bpnum" "" | |
715 | gdb_test "next" ".*global_ptr_ptr = &global_ptr.*" "gloabl_ptr_ptr next" | |
716 | gdb_test "next" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr\[\r\n\]+Old value = .*\r\nNew value = 7 .*" "next over global_ptr_ptr init" | |
717 | gdb_test "next" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr\[\r\n\]+Old value = 7 .*\r\nNew value = 9 .*" "next over global_ptr_ptr buffer set" | |
718 | gdb_test "next" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr\[\r\n\]+Old value = 9 .*\r\nNew value = 5 .*" "next over global_ptr_ptr pointer advance" | |
719 | gdb_test_no_output "delete \$global_ptr_ptr_breakpoint_number" | |
fa4727a6 DJ |
720 | } |
721 | } | |
722 | ||
218d2fc6 TJB |
723 | proc test_watchpoint_in_big_blob {} { |
724 | global gdb_prompt | |
725 | ||
726 | gdb_test "watch buf" ".*atchpoint \[0-9\]+: buf" | |
727 | gdb_test "cont" "Continuing.*atchpoint \[0-9\]+: buf\r\n\r\nOld value = .*testte\".*" "watchpoint on buf hit" | |
06a64a0b TT |
728 | |
729 | gdb_test_no_output "delete \$bpnum" "delete watch buf" | |
218d2fc6 TJB |
730 | } |
731 | ||
c906108c SS |
732 | # Start with a fresh gdb. |
733 | ||
085dd6e6 | 734 | gdb_exit |
c906108c SS |
735 | gdb_start |
736 | gdb_reinitialize_dir $srcdir/$subdir | |
737 | gdb_load $binfile | |
78b4f468 | 738 | set prev_timeout $timeout |
c906108c SS |
739 | set timeout 600 |
740 | verbose "Timeout now 600 sec.\n" | |
741 | ||
742 | if [initialize] then { | |
743 | ||
744 | test_simple_watchpoint | |
745 | ||
746 | # The IDT/sim monitor only has 8 (!) open files, of which it uses | |
747 | # 4 (!). So we have to make sure one program exits before | |
748 | # starting another one. | |
749 | if [istarget "mips-idt-*"] then { | |
750 | gdb_exit | |
751 | gdb_start | |
752 | gdb_reinitialize_dir $srcdir/$subdir | |
753 | gdb_load $binfile | |
754 | initialize | |
755 | } | |
756 | ||
757 | test_disabling_watchpoints | |
758 | ||
759 | # See above. | |
760 | if [istarget "mips-idt-*"] then { | |
761 | gdb_exit | |
762 | gdb_start | |
763 | gdb_reinitialize_dir $srcdir/$subdir | |
764 | gdb_load $binfile | |
765 | initialize | |
766 | } | |
767 | ||
768 | if ![target_info exists gdb,cannot_call_functions] { | |
769 | test_stepping | |
770 | ||
771 | # See above. | |
772 | if [istarget "mips-idt-*"] then { | |
773 | gdb_exit | |
774 | gdb_start | |
775 | gdb_reinitialize_dir $srcdir/$subdir | |
776 | gdb_load $binfile | |
777 | initialize | |
778 | } | |
779 | } | |
780 | ||
781 | # Only enabled for some targets merely because it has not been tested | |
782 | # elsewhere. | |
783 | # On sparc-sun-sunos4.1.3, GDB was running all the way to the marker4 | |
784 | # breakpoint before stopping for the watchpoint. I don't know why. | |
785 | if {[istarget "hppa*-*-*"]} then { | |
786 | test_watchpoint_triggered_in_syscall | |
787 | } | |
788 | ||
789 | # See above. | |
790 | if [istarget "mips-idt-*"] then { | |
791 | gdb_exit | |
792 | gdb_start | |
793 | gdb_reinitialize_dir $srcdir/$subdir | |
794 | gdb_load $binfile | |
795 | initialize | |
796 | } | |
797 | ||
798 | # Only enabled for some targets merely because it has not been tested | |
799 | # elsewhere. | |
800 | if {[istarget "hppa*-*-*"] || \ | |
801 | [istarget "sparc*-*-sunos*"] || \ | |
802 | [istarget "m32r-*-*"]} then { | |
803 | test_complex_watchpoint | |
804 | } | |
085dd6e6 | 805 | |
8464be76 DJ |
806 | test_inaccessible_watchpoint |
807 | ||
085dd6e6 JM |
808 | # Verify that a user can force GDB to use "slow" watchpoints. |
809 | # (This proves rather little on kernels that don't support | |
810 | # fast watchpoints, but still...) | |
811 | # | |
812 | if ![runto_main] then { fail "watch tests suppressed" } | |
813 | ||
814 | send_gdb "set can-use-hw-watchpoints 0\n" | |
815 | gdb_expect { | |
816 | -re "$gdb_prompt $"\ | |
817 | {pass "disable fast watches"} | |
818 | timeout {fail "(timeout) disable fast watches"} | |
819 | } | |
820 | send_gdb "show can-use-hw-watchpoints\n" | |
821 | gdb_expect { | |
822 | -re "Debugger's willingness to use watchpoint hardware is 0.*$gdb_prompt $"\ | |
823 | {pass "show disable fast watches"} | |
824 | -re "$gdb_prompt $"\ | |
825 | {fail "show disable fast watches"} | |
826 | timeout {fail "(timeout) show disable fast watches"} | |
827 | } | |
828 | send_gdb "watch ival3 if count > 1\n" | |
829 | gdb_expect { | |
830 | -re "Watchpoint \[0-9\]*: ival3.*$gdb_prompt $"\ | |
831 | {pass "set slow conditional watch"} | |
832 | -re "$gdb_prompt $"\ | |
833 | {fail "set slow conditional watch"} | |
834 | timeout {fail "(timeout) set slow conditional watch"} | |
835 | } | |
836 | send_gdb "continue\n" | |
837 | gdb_expect { | |
838 | -re "Watchpoint \[0-9\]*: ival3.*Old value = 1.*New value = 2.*$gdb_prompt $"\ | |
839 | {pass "trigger slow conditional watch"} | |
840 | -re "$gdb_prompt $"\ | |
841 | {fail "trigger slow conditional watch"} | |
842 | timeout {fail "(timeout) trigger slow conditional watch"} | |
843 | } | |
844 | ||
845 | # We've explicitly disabled hardware watches. Verify that GDB | |
7646a51d | 846 | # refrains from using them. |
085dd6e6 JM |
847 | # |
848 | send_gdb "rwatch ival3\n" | |
849 | gdb_expect { | |
850 | -re "Expression cannot be implemented with read/access watchpoint..*$gdb_prompt $"\ | |
851 | {pass "rwatch disallowed when can-set-hw-watchpoints cleared"} | |
852 | -re "$gdb_prompt $"\ | |
853 | {fail "rwatch disallowed when can-set-hw-watchpoints cleared"} | |
854 | timeout {fail "(timeout) rwatch disallowed when can-use-hw-watchpoints cleared"} | |
855 | } | |
856 | ||
857 | # Read- and access watchpoints are unsupported on HP-UX. Verify | |
858 | # that GDB gracefully responds to requests to create them. | |
859 | # | |
860 | if [istarget "hppa*-*-hpux*"] then { | |
861 | send_gdb "set can-use-hw-watchpoints 1\n" | |
862 | gdb_expect { | |
863 | -re "$gdb_prompt $"\ | |
864 | {pass "enable fast watches"} | |
865 | timeout {fail "(timeout) enable fast watches"} | |
866 | } | |
867 | send_gdb "rwatch ival3\n" | |
868 | gdb_expect { | |
869 | -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\ | |
870 | {pass "read watches disallowed"} | |
871 | -re "$gdb_prompt $"\ | |
872 | {fail "read watches disallowed"} | |
873 | timeout {fail "(timeout) read watches disallowed"} | |
874 | } | |
875 | ||
876 | send_gdb "awatch ival3\n" | |
877 | gdb_expect { | |
878 | -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\ | |
879 | {pass "access watches disallowed"} | |
880 | -re "$gdb_prompt $"\ | |
881 | {fail "access watches disallowed"} | |
882 | timeout {fail "(timeout) access watches disallowed"} | |
883 | } | |
884 | } | |
293e9a31 DC |
885 | |
886 | # See above. | |
887 | if [istarget "mips-idt-*"] then { | |
888 | gdb_exit | |
889 | gdb_start | |
890 | gdb_reinitialize_dir $srcdir/$subdir | |
891 | gdb_load $binfile | |
892 | initialize | |
893 | } | |
894 | ||
895 | test_watchpoint_and_breakpoint | |
218d2fc6 TJB |
896 | |
897 | test_watchpoint_in_big_blob | |
65d79d4b SDJ |
898 | |
899 | # See above. | |
900 | if [istarget "mips-idt-*"] then { | |
901 | clean_restart | |
902 | } | |
903 | ||
904 | test_constant_watchpoint | |
06a64a0b TT |
905 | |
906 | test_watch_location | |
c906108c | 907 | } |
78b4f468 RE |
908 | |
909 | # Restore old timeout | |
910 | set timeout $prev_timeout | |
911 | verbose "Timeout now $timeout sec.\n" |