projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 4c38e0a4 JB |
1 | # Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2007, 2008, 2009, |
| 2 | # 2010 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] { | |
| 64 | gdb_test "set can-use-hw-watchpoints 0" "" "" | |
| 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 | } | |
| 618 | } | |
| 619 | } | |
| 620 | ||
| fa4727a6 DJ |
621 | proc test_inaccessible_watchpoint {} { |
| 622 | global gdb_prompt | |
| 623 | ||
| 624 | # This is a test for watchpoints on currently inaccessible (but later | |
| 625 | # valid) memory. | |
| 626 | ||
| 627 | if [runto func4] then { | |
| ccc57cf9 PA |
628 | # Make sure we only allow memory access errors. |
| 629 | set msg "watchpoint refused to insert on nonexistent struct member" | |
| 630 | gdb_test_multiple "watch struct1.nosuchmember" $msg { | |
| 631 | -re ".*atchpoint \[0-9\]+: struct1.nosuchmember.*$gdb_prompt $" { | |
| 632 | # PR breakpoints/9681 | |
| 633 | fail $msg | |
| 634 | } | |
| 635 | -re "There is no member named nosuchmember\\..*$gdb_prompt $" { | |
| 636 | pass $msg | |
| 637 | } | |
| 638 | } | |
| 639 | ||
| fa4727a6 DJ |
640 | gdb_test "watch *global_ptr" ".*atchpoint \[0-9\]+: \\*global_ptr" |
| 641 | gdb_test "next" ".*global_ptr = buf.*" | |
| 642 | gdb_test_multiple "next" "next over ptr init" { | |
| 643 | -re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = .*\r\nNew value = 3 .*\r\n.*$gdb_prompt $" { | |
| 644 | # We can not test for <unknown> here because NULL may be readable. | |
| 645 | # This test does rely on *NULL != 3. | |
| 646 | pass "next over ptr init" | |
| 647 | } | |
| 648 | } | |
| 649 | gdb_test_multiple "next" "next over buffer set" { | |
| 650 | -re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = 3 .*\r\nNew value = 7 .*\r\n.*$gdb_prompt $" { | |
| 651 | pass "next over buffer set" | |
| 652 | } | |
| 653 | } | |
| 654 | } | |
| 655 | } | |
| 656 | ||
| 218d2fc6 TJB |
657 | proc test_watchpoint_in_big_blob {} { |
| 658 | global gdb_prompt | |
| 659 | ||
| 660 | gdb_test "watch buf" ".*atchpoint \[0-9\]+: buf" | |
| 661 | gdb_test "cont" "Continuing.*atchpoint \[0-9\]+: buf\r\n\r\nOld value = .*testte\".*" "watchpoint on buf hit" | |
| 662 | } | |
| 663 | ||
| c906108c SS |
664 | # Start with a fresh gdb. |
| 665 | ||
| 085dd6e6 | 666 | gdb_exit |
| c906108c SS |
667 | gdb_start |
| 668 | gdb_reinitialize_dir $srcdir/$subdir | |
| 669 | gdb_load $binfile | |
| 78b4f468 | 670 | set prev_timeout $timeout |
| c906108c SS |
671 | set timeout 600 |
| 672 | verbose "Timeout now 600 sec.\n" | |
| 673 | ||
| 674 | if [initialize] then { | |
| 675 | ||
| 676 | test_simple_watchpoint | |
| 677 | ||
| 678 | # The IDT/sim monitor only has 8 (!) open files, of which it uses | |
| 679 | # 4 (!). So we have to make sure one program exits before | |
| 680 | # starting another one. | |
| 681 | if [istarget "mips-idt-*"] then { | |
| 682 | gdb_exit | |
| 683 | gdb_start | |
| 684 | gdb_reinitialize_dir $srcdir/$subdir | |
| 685 | gdb_load $binfile | |
| 686 | initialize | |
| 687 | } | |
| 688 | ||
| 689 | test_disabling_watchpoints | |
| 690 | ||
| 691 | # See above. | |
| 692 | if [istarget "mips-idt-*"] then { | |
| 693 | gdb_exit | |
| 694 | gdb_start | |
| 695 | gdb_reinitialize_dir $srcdir/$subdir | |
| 696 | gdb_load $binfile | |
| 697 | initialize | |
| 698 | } | |
| 699 | ||
| 700 | if ![target_info exists gdb,cannot_call_functions] { | |
| 701 | test_stepping | |
| 702 | ||
| 703 | # See above. | |
| 704 | if [istarget "mips-idt-*"] then { | |
| 705 | gdb_exit | |
| 706 | gdb_start | |
| 707 | gdb_reinitialize_dir $srcdir/$subdir | |
| 708 | gdb_load $binfile | |
| 709 | initialize | |
| 710 | } | |
| 711 | } | |
| 712 | ||
| 713 | # Only enabled for some targets merely because it has not been tested | |
| 714 | # elsewhere. | |
| 715 | # On sparc-sun-sunos4.1.3, GDB was running all the way to the marker4 | |
| 716 | # breakpoint before stopping for the watchpoint. I don't know why. | |
| 717 | if {[istarget "hppa*-*-*"]} then { | |
| 718 | test_watchpoint_triggered_in_syscall | |
| 719 | } | |
| 720 | ||
| 721 | # See above. | |
| 722 | if [istarget "mips-idt-*"] then { | |
| 723 | gdb_exit | |
| 724 | gdb_start | |
| 725 | gdb_reinitialize_dir $srcdir/$subdir | |
| 726 | gdb_load $binfile | |
| 727 | initialize | |
| 728 | } | |
| 729 | ||
| 730 | # Only enabled for some targets merely because it has not been tested | |
| 731 | # elsewhere. | |
| 732 | if {[istarget "hppa*-*-*"] || \ | |
| 733 | [istarget "sparc*-*-sunos*"] || \ | |
| 734 | [istarget "m32r-*-*"]} then { | |
| 735 | test_complex_watchpoint | |
| 736 | } | |
| 085dd6e6 JM |
737 | |
| 738 | # Verify that a user can force GDB to use "slow" watchpoints. | |
| 739 | # (This proves rather little on kernels that don't support | |
| 740 | # fast watchpoints, but still...) | |
| 741 | # | |
| 742 | if ![runto_main] then { fail "watch tests suppressed" } | |
| 743 | ||
| 744 | send_gdb "set can-use-hw-watchpoints 0\n" | |
| 745 | gdb_expect { | |
| 746 | -re "$gdb_prompt $"\ | |
| 747 | {pass "disable fast watches"} | |
| 748 | timeout {fail "(timeout) disable fast watches"} | |
| 749 | } | |
| 750 | send_gdb "show can-use-hw-watchpoints\n" | |
| 751 | gdb_expect { | |
| 752 | -re "Debugger's willingness to use watchpoint hardware is 0.*$gdb_prompt $"\ | |
| 753 | {pass "show disable fast watches"} | |
| 754 | -re "$gdb_prompt $"\ | |
| 755 | {fail "show disable fast watches"} | |
| 756 | timeout {fail "(timeout) show disable fast watches"} | |
| 757 | } | |
| 758 | send_gdb "watch ival3 if count > 1\n" | |
| 759 | gdb_expect { | |
| 760 | -re "Watchpoint \[0-9\]*: ival3.*$gdb_prompt $"\ | |
| 761 | {pass "set slow conditional watch"} | |
| 762 | -re "$gdb_prompt $"\ | |
| 763 | {fail "set slow conditional watch"} | |
| 764 | timeout {fail "(timeout) set slow conditional watch"} | |
| 765 | } | |
| 766 | send_gdb "continue\n" | |
| 767 | gdb_expect { | |
| 768 | -re "Watchpoint \[0-9\]*: ival3.*Old value = 1.*New value = 2.*$gdb_prompt $"\ | |
| 769 | {pass "trigger slow conditional watch"} | |
| 770 | -re "$gdb_prompt $"\ | |
| 771 | {fail "trigger slow conditional watch"} | |
| 772 | timeout {fail "(timeout) trigger slow conditional watch"} | |
| 773 | } | |
| 774 | ||
| 775 | # We've explicitly disabled hardware watches. Verify that GDB | |
| 7646a51d | 776 | # refrains from using them. |
| 085dd6e6 JM |
777 | # |
| 778 | send_gdb "rwatch ival3\n" | |
| 779 | gdb_expect { | |
| 780 | -re "Expression cannot be implemented with read/access watchpoint..*$gdb_prompt $"\ | |
| 781 | {pass "rwatch disallowed when can-set-hw-watchpoints cleared"} | |
| 782 | -re "$gdb_prompt $"\ | |
| 783 | {fail "rwatch disallowed when can-set-hw-watchpoints cleared"} | |
| 784 | timeout {fail "(timeout) rwatch disallowed when can-use-hw-watchpoints cleared"} | |
| 785 | } | |
| 786 | ||
| 787 | # Read- and access watchpoints are unsupported on HP-UX. Verify | |
| 788 | # that GDB gracefully responds to requests to create them. | |
| 789 | # | |
| 790 | if [istarget "hppa*-*-hpux*"] then { | |
| 791 | send_gdb "set can-use-hw-watchpoints 1\n" | |
| 792 | gdb_expect { | |
| 793 | -re "$gdb_prompt $"\ | |
| 794 | {pass "enable fast watches"} | |
| 795 | timeout {fail "(timeout) enable fast watches"} | |
| 796 | } | |
| 797 | send_gdb "rwatch ival3\n" | |
| 798 | gdb_expect { | |
| 799 | -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\ | |
| 800 | {pass "read watches disallowed"} | |
| 801 | -re "$gdb_prompt $"\ | |
| 802 | {fail "read watches disallowed"} | |
| 803 | timeout {fail "(timeout) read watches disallowed"} | |
| 804 | } | |
| 805 | ||
| 806 | send_gdb "awatch ival3\n" | |
| 807 | gdb_expect { | |
| 808 | -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\ | |
| 809 | {pass "access watches disallowed"} | |
| 810 | -re "$gdb_prompt $"\ | |
| 811 | {fail "access watches disallowed"} | |
| 812 | timeout {fail "(timeout) access watches disallowed"} | |
| 813 | } | |
| 814 | } | |
| 293e9a31 | 815 | |
| fa4727a6 DJ |
816 | test_inaccessible_watchpoint |
| 817 | ||
| 293e9a31 DC |
818 | # See above. |
| 819 | if [istarget "mips-idt-*"] then { | |
| 820 | gdb_exit | |
| 821 | gdb_start | |
| 822 | gdb_reinitialize_dir $srcdir/$subdir | |
| 823 | gdb_load $binfile | |
| 824 | initialize | |
| 825 | } | |
| 826 | ||
| 827 | test_watchpoint_and_breakpoint | |
| 218d2fc6 TJB |
828 | |
| 829 | test_watchpoint_in_big_blob | |
| c906108c | 830 | } |
| 78b4f468 RE |
831 | |
| 832 | # Restore old timeout | |
| 833 | set timeout $prev_timeout | |
| 834 | verbose "Timeout now $timeout sec.\n" |