gdb/testsuite/gdb.hp/watch-hp.exp

   1 # Copyright (C) 1992, 1994, 1997 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 2 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program; if not, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  16
  17 # Please email any bugs, comments, and/or additions to this file to:
  18 # bug-gdb@prep.ai.mit.edu
  19
  20 # This file was written by Fred Fish. (fnf@cygnus.com)
  21
  22 if $tracelevel then {
  23     strace $tracelevel
  24 }
  25
  26 set prms_id 0
  27 set bug_id 0
  28
  29 set testfile "watch-hp"
  30 set srcfile ${testfile}.c
  31 set binfile ${objdir}/${subdir}/${testfile}
  32 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  33      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  34 }
  35
  36 if [get_compiler_info ${binfile}] {
  37     return -1;
  38 }
  39 if {[skip_hp_tests $gcc_compiled]} then { continue }
  40
  41 # Prepare for watchpoint tests by setting up two breakpoints and one
  42 # watchpoint.
  43 #
  44 # We use breakpoints at marker functions to get past all the startup code,
  45 # so we can get to the watchpoints in a reasonable amount of time from a
  46 # known starting point.
  47 #
  48 # For simplicity, so we always know how to reference specific breakpoints or
  49 # watchpoints by number, we expect a particular ordering and numbering of
  50 # each in the combined breakpoint/watchpoint table, as follows:
  51 #
  52 #       Number          What            Where
  53 #       1               Breakpoint      marker1()
  54 #       2               Breakpoint      marker2()
  55 #       3               Watchpoint      ival3
  56
  57 proc initialize {} {
  58     global gdb_prompt
  59     global hex
  60     global decimal
  61     global srcfile
  62
  63     if [gdb_test "break marker1" "Breakpoint 1 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker1" ] {
  64       return 0;
  65     }
  66
  67
  68     if [gdb_test "break marker2" "Breakpoint 2 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker2" ] {
  69       return 0;
  70     }
  71
  72
  73     if [gdb_test "info break" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*" "info break in watchpoint.exp" ] {
  74       return 0;
  75     }
  76
  77 # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
  78 # before running can cause the inferior to croak on HP-UX 10.30 and
  79 # 11.0 for reasons as yet unknown, we've disabled the ability to set
  80 # watches without a running inferior.  Verify the restriction.
  81 #
  82     send_gdb "watch ival3\n"
  83     gdb_expect {
  84         -re ".*can't do that without a running program; try \"break main\", \"run\" first.*$gdb_prompt $" {
  85             pass "set watchpoint on ival3"
  86         }
  87         -re ".*$gdb_prompt $" { fail "set watchpoint on ival3"  }
  88         timeout { fail "set watchpoint on ival3 (timeout)"  }
  89     }
  90
  91
  92 #    if [gdb_test "watch ival3" ".*\[Ww\]atchpoint 3: ival3" "set watchpoint on ival3" ] {
  93 #      return 0;
  94 #    }
  95
  96
  97     # "info watch" is the same as "info break"
  98
  99 #    if [gdb_test "info watch" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*\r\n3\[ \]*.*watchpoint.*ival3" "watchpoint found in watchpoint/breakpoint table" ] {
 100 #      return 0;
 101 #    }
 102
 103
 104     # After installing the watchpoint, we disable it until we are ready
 105     # to use it.  This allows the test program to run at full speed until
 106     # we get to the first marker function.
 107
 108 #    if [gdb_test "disable 3" "disable 3\[\r\n\]+" "disable watchpoint" ] {
 109 #      return 0;
 110 #    }
 111
 112
 113     return 1
 114 }
 115
 116 #
 117 # Test simple watchpoint.
 118 #
 119
 120 proc test_simple_watchpoint {} {
 121     global gdb_prompt
 122     global hex
 123     global decimal
 124
 125     # Ensure that the watchpoint is disabled when we startup.
 126
 127 #    if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_simple_watchpoint" ] {
 128 #      return 0;
 129 #    }
 130
 131
 132     # Run until we get to the first marker function.
 133
 134     gdb_run_cmd
 135     set timeout 600
 136     gdb_expect {
 137         -re "Breakpoint 1, marker1 .*$gdb_prompt $" {
 138             pass "run to marker1 in test_simple_watchpoint"
 139         }
 140         -re ".*$gdb_prompt $" {
 141             fail "run to marker1 in test_simple_watchpoint"
 142             return
 143         }
 144         timeout {
 145             fail "run to marker1 in test_simple_watchpoint (timeout)"
 146             return
 147         }
 148     }
 149 #************************
 150
 151 # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
 152 # before running can cause the inferior to croak on HP-UX 10.30 and
 153 # 11.0 for reasons as yet unknown, we've disabled the ability to set
 154 # watches without a running inferior.  The following testpoints used
 155 # to be in [initialize].
 156 #
 157     send_gdb "watch ival3\n"
 158     gdb_expect {
 159         -re ".*\[Ww\]atchpoint 3: ival3\r\n$gdb_prompt $" {
 160             pass "set watchpoint on ival3"
 161         }
 162         -re ".*$gdb_prompt $" { fail "set watchpoint on ival3"  }
 163         timeout { fail "set watchpoint on ival3 (timeout)"  }
 164     }
 165
 166     # "info watch" is the same as "info break"
 167
 168     send_gdb "info watch\n"
 169     gdb_expect {
 170         -re "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*\r\n3\[ \]*.*watchpoint.*ival3\r\n$gdb_prompt $" {
 171             pass "watchpoint found in watchpoint/breakpoint table"
 172         }
 173         -re ".*$gdb_prompt $" {
 174             fail "watchpoint found in watchpoint/breakpoint table"
 175         }
 176         timeout {
 177            fail "watchpoint found in watchpoint/breakpoint table"
 178         }
 179     }
 180
 181     # After installing the watchpoint, we disable it until we are ready
 182     # to use it.  This allows the test program to run at full speed until
 183     # we get to the first marker function.
 184
 185     send_gdb "disable 3\n"
 186     gdb_expect {
 187         -re "disable 3\[\r\n\]+$gdb_prompt $" { pass "disable watchpoint" }
 188         -re ".*$gdb_prompt $" { fail "disable watchpoint"  }
 189         timeout { fail "disable watchpoint (timeout)"  }
 190     }
 191 #******
 192     # After reaching the marker function, enable the watchpoint.
 193
 194     if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "enable watchpoint" ] {
 195       return ;
 196     }
 197
 198
 199     gdb_test "break func1" "Breakpoint.*at.*"
 200     gdb_test "set \$func1_breakpoint_number = \$bpnum" ""
 201
 202     gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, func1.*" \
 203         "continue to breakpoint at func1"
 204
 205     # Continue until the first change, from -1 to 0
 206
 207     send_gdb "cont\n"
 208     gdb_expect {
 209         -re "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count; ival4 = count;.*$gdb_prompt $" {
 210             pass "watchpoint hit, first time"
 211         }
 212         -re "Continuing.*Breakpoint.*func1.*$gdb_prompt $" {
 213             setup_xfail "m68*-*-*" 2597
 214             fail "thought it hit breakpoint at func1 twice"
 215             gdb_test "delete \$func1_breakpoint_number" ""
 216             gdb_test "continue" "\
 217 Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count;" \
 218                 "watchpoint hit, first time"
 219         }
 220         -re ".*$gdb_prompt $" { fail "watchpoint hit, first time" ; return }
 221         timeout { fail "watchpoint hit, first time (timeout)" ; return }
 222         eof { fail "watchpoint hit, first time (eof)" ; return }
 223     }
 224
 225     gdb_test "delete \$func1_breakpoint_number" ""
 226
 227     # Continue until the next change, from 0 to 1.
 228     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit, second time"
 229
 230     # Continue until the next change, from 1 to 2.
 231     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 1.*New value = 2.*ival3 = count; ival4 = count;.*" "watchpoint hit, third time"
 232
 233     # Continue until the next change, from 2 to 3.
 234     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 2.*New value = 3.*ival3 = count; ival4 = count;.*" "watchpoint hit, fourth time"
 235
 236     # Continue until the next change, from 3 to 4.
 237     # Note that this one is outside the loop.
 238
 239     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 3.*New value = 4.*ival3 = count; ival4 = count;.*" "watchpoint hit, fifth time"
 240
 241     # Continue until we hit the finishing marker function.
 242     # Make sure we hit no more watchpoints.
 243
 244     gdb_test "cont" "Continuing.*Breakpoint.*marker2 \(\).*" \
 245         "continue to marker2"
 246
 247     # Disable the watchpoint so we run at full speed until we exit.
 248
 249     if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "watchpoint disabled" ] {
 250       return ;
 251     }
 252
 253
 254     # Run until process exits.
 255
 256     if [target_info exists gdb,noresults] { return }
 257
 258     gdb_test "cont" "Continuing.*Program exited normally.*" \
 259         "continue to exit in test_simple_watchpoint"
 260 }
 261
 262 # Test disabling watchpoints.
 263
 264 proc test_disabling_watchpoints {} {
 265     global gdb_prompt
 266     global binfile
 267     global srcfile
 268     global decimal
 269     global hex
 270
 271     # Ensure that the watchpoint is disabled when we startup.
 272
 273     if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_disabling_watchpoints" ] {
 274       return 0;
 275     }
 276
 277
 278     # Run until we get to the first marker function.
 279
 280     gdb_run_cmd
 281     set timeout 600
 282     gdb_expect {
 283         -re "Breakpoint 1, marker1 .*$gdb_prompt $" {
 284             pass "run to marker1 in test_disabling_watchpoints"
 285         }
 286         -re ".*$gdb_prompt $" {
 287             fail "run to marker1 in test_disabling_watchpoints"
 288             return
 289         }
 290         timeout {
 291             fail "run to marker1 in test_disabling_watchpoints (timeout)"
 292             return
 293         }
 294     }
 295
 296     # After reaching the marker function, enable the watchpoint.
 297
 298     if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "watchpoint enabled" ] {
 299       return ;
 300     }
 301
 302
 303     # Continue until the first change, from -1 to 0
 304     # Don't check the old value, because on VxWorks the variable value
 305     # will not have been reinitialized.
 306     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = .*New value = 0.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, first time"
 307
 308     # Continue until the next change, from 0 to 1.
 309     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"
 310
 311     # Disable the watchpoint but leave breakpoints
 312
 313     if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint #2 in test_disabling_watchpoints" ] {
 314       return 0;
 315     }
 316
 317
 318     # Check watchpoint list, looking for the entry that confirms the
 319     # watchpoint is disabled.
 320     gdb_test "info watchpoints" "3\[ \]*.*watchpoint\[ \]*keep\[ \]*n\[ \]*ival3\r\n.*" "watchpoint disabled in table"
 321
 322     # Continue until we hit the finishing marker function.
 323     # Make sure we hit no more watchpoints.
 324     gdb_test "cont" "Continuing.*Breakpoint.*marker2 \\(\\).*" \
 325         "disabled watchpoint skipped"
 326
 327     if [target_info exists gdb,noresults] { return }
 328
 329     gdb_test "cont" "Continuing.*Program exited normally.*" \
 330         "continue to exit in test_disabling_watchpoints"
 331 }
 332
 333 # Test stepping and other mundane operations with watchpoints enabled
 334 proc test_stepping {} {
 335     global gdb_prompt
 336
 337     if [runto marker1] then {
 338         gdb_test "watch ival2" ".*\[Ww\]atchpoint \[0-9\]*: ival2"
 339
 340         # Well, let's not be too mundane.  It should be a *bit* of a challenge
 341         gdb_test "break func2 if 0" "Breakpoint.*at.*"
 342         gdb_test "p \$func2_breakpoint_number = \$bpnum" " = .*"
 343
 344         # The HPPA has a problem here if it's not using hardware watchpoints
 345         if {[ istarget "hppa*-*-*" ] && ![ istarget "hppa*-*-*bsd*" ]} then {
 346             # Don't actually try doing the call, if we do we can't continue.
 347             setup_xfail "*-*-*"
 348             fail "calling function with watchpoint enabled"
 349         } else {
 350             # The problem is that GDB confuses stepping through the call
 351             # dummy with hitting the breakpoint at the end of the call dummy.
 352             # Will be fixed once all architectures define
 353             # CALL_DUMMY_BREAKPOINT_OFFSET.
 354             setup_xfail "*-*-*"
 355             # This doesn't occur if the call dummy starts with a call,
 356             # because we are out of the dummy by the first time the inferior
 357             # stops.
 358             clear_xfail "d10v*-*-*"
 359             clear_xfail "m68*-*-*"
 360             clear_xfail "i*86*-*-*"
 361             clear_xfail "vax-*-*"
 362             # The following architectures define CALL_DUMMY_BREAKPOINT_OFFSET.
 363             clear_xfail "alpha-*-*"
 364             clear_xfail "mips*-*-*"
 365             clear_xfail "sparc-*-*"
 366             clear_xfail "hppa*-*-*bsd*"
 367             # It works with the generic inferior function calling code too.
 368             clear_xfail "mn10200*-*-*"
 369             clear_xfail "mn10300*-*-*"
 370             gdb_test "p func1 ()" "= 73" \
 371                 "calling function with watchpoint enabled"
 372         }
 373
 374         #
 375         # "finish" brings us back to main.
 376         # On some targets (e.g. alpha) gdb will stop from the finish in midline
 377         # of the marker1 call. This is due to register restoring code on
 378         # the alpha and might be caused by stack adjustment instructions
 379         # on other targets. In this case we will step once more.
 380         #
 381
 382         send_gdb "finish\n"
 383         gdb_expect {
 384             -re "Run.*exit from.*marker1.* at" { }
 385             default { fail "finish from marker1" ; return }
 386         }
 387
 388         gdb_expect {
 389             -re "marker1 \\(\\);.*$gdb_prompt $" {
 390                 send_gdb "step\n"
 391                 exp_continue
 392             }
 393             -re "func1 \\(\\);.*$gdb_prompt $" {
 394                 pass "finish from marker1"
 395             }
 396             -re ".*$gdb_prompt $" {
 397                 fail "finish from marker1"
 398             }
 399             default { fail "finish from marker1" ; return }
 400         }
 401
 402         gdb_test "next" "for \\(count = 0.*" "next to `for' in watchpoint.exp"
 403
 404         # Now test that "until" works.  It's a bit tricky to test
 405         # "until", because compilers don't always arrange the code
 406         # exactly the same way, and we might get slightly different
 407         # sequences of statements.  But the following should be true
 408         # (if not it is a compiler or a debugger bug): The user who
 409         # does "until" at every statement of a loop should end up
 410         # stepping through the loop once, and the debugger should not
 411         # stop for any of the remaining iterations.
 412
 413         gdb_test "until" "ival1 = count.*" "until to ival1 assignment"
 414         gdb_test "until" "ival3 = count.*" "until to ival3 assignment"
 415         send_gdb "until\n"
 416         gdb_expect {
 417             -re "(for \\(count = 0|\}).*$gdb_prompt $" {
 418                 gdb_test "until" "ival1 = count; /. Outside loop ./" \
 419                     "until out of loop"
 420             }
 421             -re "ival1 = count; /. Outside loop ./.*$gdb_prompt $" {
 422                 pass "until out of loop"
 423             }
 424             -re ".*$gdb_prompt $" {
 425                 fail "until out of loop"
 426             }
 427             default { fail "until out of loop" ; return }
 428         }
 429
 430         gdb_test "step" "ival2 = count.*" "step to ival2 assignment"
 431     }
 432 }
 433
 434 # Test stepping and other mundane operations with watchpoints enabled
 435 proc test_watchpoint_triggered_in_syscall {} {
 436     global gdb_prompt
 437
 438     if [target_info exists gdb,noinferiorio] {
 439         verbose "Skipping test_watchpoint_triggered_in_syscall due to noinferiorio"
 440         return
 441     }
 442     # Run until we get to the first marker function.
 443     set x 0
 444     set y 0
 445     set testname "Watch buffer passed to read syscall"
 446     if [runto marker2] then {
 447         gdb_test "watch buf\[0\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[0\\\]"
 448         gdb_test "watch buf\[1\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[1\\\]"
 449         gdb_test "watch buf\[2\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[2\\\]"
 450         gdb_test "watch buf\[3\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[3\\\]"
 451         gdb_test "watch buf\[4\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[4\\\]"
 452         gdb_test "break marker4" ".*Breakpoint.*"
 453
 454         gdb_test "set doread = 1" ""
 455
 456         # If we send_gdb "123\n" before gdb has switched the tty, then it goes
 457         # to gdb, not the inferior, and we lose.  So that is why we have
 458         # watchpoint.c prompt us, so we can wait for that prompt.
 459         send_gdb "continue\n";
 460         gdb_expect {
 461             -re "Continuing\\.\r\ntype stuff for buf now:" {
 462                 pass "continue to read"
 463             }
 464             default {
 465                 fail "continue to read";
 466                 return ;
 467             }
 468         }
 469
 470         send_gdb "123\n"
 471         gdb_expect {
 472             -re ".*\[Ww\]atchpoint.*buf\\\[0\\\].*Old value = 0.*New value = 49\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
 473             -re ".*\[Ww\]atchpoint.*buf\\\[1\\\].*Old value = 0.*New value = 50\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
 474             -re ".*\[Ww\]atchpoint.*buf\\\[2\\\].*Old value = 0.*New value = 51\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
 475             -re ".*\[Ww\]atchpoint.*buf\\\[3\\\].*Old value = 0.*New value = 10\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
 476             -re ".*$gdb_prompt $" { pass "sent 123" }
 477             timeout { fail "sent 123 (timeout)" }
 478         }
 479
 480         # Examine the values in buf to see how many watchpoints we
 481         # should have printed.
 482         send_gdb "print buf\[0\]\n"
 483         gdb_expect {
 484             -re ".*= 49.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[0\]"}
 485             -re ".*= 0.*$gdb_prompt $" { pass "print buf\[0\]"}
 486             -re ".*$gdb_prompt $" { fail "print buf\[0\]"}
 487             default { fail "print buf\[0\]"}
 488         }
 489         send_gdb "print buf\[1\]\n"
 490         gdb_expect {
 491             -re ".*= 50.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[1\]"}
 492             -re ".*= 0.*$gdb_prompt $" { pass "print buf\[1\]"}
 493             -re ".*$gdb_prompt $" { fail "print buf\[1\]"}
 494             default { fail "print buf\[1\]"}
 495         }
 496         send_gdb "print buf\[2\]\n"
 497         gdb_expect {
 498             -re ".*= 51.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[2\]"}
 499             -re ".*= 0.*$gdb_prompt $" { pass "print buf\[2\]"}
 500             -re ".*$gdb_prompt $" { fail "print buf\[2\]"}
 501             default { fail "print buf\[2\]"}
 502         }
 503         send_gdb "print buf\[3\]\n"
 504         gdb_expect {
 505             -re ".*= 10.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[3\]"}
 506             -re ".*= 0.*$gdb_prompt $" { pass "print buf\[3\]"}
 507             -re ".*$gdb_prompt $" { fail "print buf\[3\]" }
 508             default { fail "print buf\[3\]" }
 509         }
 510
 511         # Did we find what we were looking for?  If not, flunk it.
 512         if [expr $x==$y] then { pass $testname } else { fail "$testname (only triggered $x watchpoints, expected $y)"}
 513
 514         # Continue until we hit the finishing marker function.
 515         # Make sure we hit no more watchpoints.
 516         gdb_test "cont" "Continuing.*Breakpoint.*marker4 \\(\\).*" \
 517             "continue to marker4"
 518
 519         # Disable everything so we can finish the program at full speed
 520         gdb_test "disable" "" "disable in test_watchpoint_triggered_in_syscall"
 521
 522         if [target_info exists gdb,noresults] { return }
 523
 524         gdb_test "cont" "Continuing.*Program exited normally.*" \
 525             "continue to exit in test_watchpoint_triggered_in_syscall"
 526     }
 527 }
 528
 529 # Do a simple test of of watching through a pointer when the pointer
 530 # itself changes.  Should add some more complicated stuff here.
 531
 532 proc test_complex_watchpoint {} {
 533     global gdb_prompt
 534
 535     if [runto marker4] then {
 536         gdb_test "watch ptr1->val" ".*\[Ww\]atchpoint \[0-9\]*: ptr1->val"
 537         gdb_test "break marker5" ".*Breakpoint.*"
 538
 539         gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ptr1->val.*Old value = 1.*New value = 2.*" "Test complex watchpoint"
 540
 541         # Continue until we hit the marker5 function.
 542         # Make sure we hit no more watchpoints.
 543
 544         gdb_test "cont" "Continuing.*Breakpoint.*marker5 \\(\\).*" \
 545             "did not trigger wrong watchpoint"
 546 #********************
 547         # Test watches of things declared locally in a function.
 548         # In particular, test that a watch of stack-based things
 549         # is deleted when the stack-based things go out of scope.
 550         #
 551         gdb_test "disable" "" "disable in test_complex_watchpoint"
 552         gdb_test "break marker6" ".*Breakpoint.*"
 553         gdb_test "cont" "Continuing.*Breakpoint.*marker6 \\(\\).*" \
 554             "continue to marker6"
 555         gdb_test "break func2" ".*Breakpoint.*"
 556         gdb_test "cont" "Continuing.*func2.*"
 557
 558         # Test a watch of a single stack-based variable, whose scope
 559         # is the function we're now in.  This should auto-delete when
 560         # execution exits the scope of the watchpoint.
 561         #
 562         gdb_test "watch local_a" ".*\[Ww\]atchpoint \[0-9\]*: local_a" "set local watch"
 563         gdb_test "cont" "\[Ww\]atchpoint.*local_a.*" "trigger local watch"
 564         gdb_test "cont" "Continuing.*Watchpoint .* deleted because the program has left the block in.*which its expression is valid.*" "self-delete local watch"
 565
 566         # after func2 returned, gdb stopped and deleted the watchpoint
 567         # we're now in main, let's get to func2
 568         gdb_test "cont" "Continuing.*func2.*"
 569
 570         # We should be in "func2" again now.  Test a watch of an
 571         # expression which includes both a stack-based local and
 572         # something whose scope is larger than this invocation
 573         # of "func2".  This should also auto-delete.
 574         #
 575         gdb_test "watch local_a + ival5" ".*\[Ww\]atchpoint \[0-9\]*: local_a . ival5" \
 576                  "set partially local watch"
 577         gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
 578                  "trigger1 partially local watch"
 579         gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
 580                  "trigger2 partially local watch"
 581         gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
 582                  "self-delete partially local watch"
 583
 584         # after func2 returned, gdb stopped and deleted the watchpoint
 585         # we're now in main, let's get to func2
 586         gdb_test "cont" "Continuing.*func2.*"
 587
 588         # We should be in "func2" again now.  Test a watch of a
 589         # static (non-stack-based) local.  Since this has scope
 590         # across any invocations of "func2", it should not auto-
 591         # delete.
 592         #
 593         gdb_test "watch static_b" ".*\[Ww\]atchpoint \[0-9\]*: static_b" \
 594                  "set static local watch"
 595         gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: static_b.*" \
 596                  "trigger static local watch"
 597         gdb_test "cont" "Continuing.*marker6 \\(\\).*" \
 598                  "continue after trigger static local watch"
 599         gdb_test "info break" ".*watchpoint.*static_b.*" \
 600                  "static local watch did not self-delete"
 601
 602         # We should be in "recurser" now.  Test a watch of a stack-
 603         # based local.  Symbols mentioned in a watchpoint are bound
 604         # at watchpoint-creation.  Thus, a watch of a stack-based
 605         # local to a recursing function should be bound only to that
 606         # one invocation, and should not trigger for other invocations.
 607         #
 608         gdb_test "tbreak recurser" ".*Breakpoint.*"
 609         gdb_test "cont" "Continuing.*recurser.*"
 610         gdb_test "watch local_x" ".*\[Ww\]atchpoint \[0-9\]*: local_x" \
 611                  "set local watch in recursive call"
 612         gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_x.*New value = 2.*" \
 613                  "trigger local watch in recursive call"
 614         gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
 615                  "self-delete local watch in recursive call"
 616
 617
 618
 619
 620 #******************
 621         # Disable everything so we can finish the program at full speed
 622         gdb_test "disable" "" "disable in test_complex_watchpoint"
 623
 624         if [target_info exists gdb,noresults] { return }
 625
 626
 627         gdb_test "cont" "Continuing.*Program exited normally.*" \
 628             "continue to exit in test_complex_watchpoint"
 629     }
 630 }
 631
 632 # Start with a fresh gdb.
 633
 634 gdb_start
 635 gdb_reinitialize_dir $srcdir/$subdir
 636 gdb_load $binfile
 637 set timeout 600
 638 verbose "Timeout now 600 sec.\n"
 639
 640 if [initialize] then {
 641
 642     test_simple_watchpoint
 643
 644     # The IDT/sim monitor only has 8 (!) open files, of which it uses
 645     # 4 (!).  So we have to make sure one program exits before
 646     # starting another one.
 647     if [istarget "mips-idt-*"] then {
 648         gdb_exit
 649         gdb_start
 650         gdb_reinitialize_dir $srcdir/$subdir
 651         gdb_load $binfile
 652         initialize
 653     }
 654
 655     test_disabling_watchpoints
 656
 657     # See above.
 658     if [istarget "mips-idt-*"] then {
 659         gdb_exit
 660         gdb_start
 661         gdb_reinitialize_dir $srcdir/$subdir
 662         gdb_load $binfile
 663         initialize
 664     }
 665
 666     if ![target_info exists gdb,cannot_call_functions] {
 667         test_stepping
 668
 669         # See above.
 670         if [istarget "mips-idt-*"] then {
 671             gdb_exit
 672             gdb_start
 673             gdb_reinitialize_dir $srcdir/$subdir
 674             gdb_load $binfile
 675             initialize
 676         }
 677     }
 678
 679     # Only enabled for some targets merely because it has not been tested
 680     # elsewhere.
 681     # On sparc-sun-sunos4.1.3, GDB was running all the way to the marker4
 682     # breakpoint before stopping for the watchpoint.  I don't know why.
 683     if {[istarget "hppa*-*-*"]} then {
 684         test_watchpoint_triggered_in_syscall
 685     }
 686
 687     # See above.
 688     if [istarget "mips-idt-*"] then {
 689         gdb_exit
 690         gdb_start
 691         gdb_reinitialize_dir $srcdir/$subdir
 692         gdb_load $binfile
 693         initialize
 694     }
 695
 696     # Only enabled for some targets merely because it has not been tested
 697     # elsewhere.
 698     if {[istarget "hppa*-*-*"] || \
 699             [istarget "sparc*-*-sunos*"] || \
 700             [istarget "m32r-*-*"]} then {
 701         test_complex_watchpoint
 702 #***************
 703     }
 704
 705     # Verify that a user can force GDB to use "slow" watchpoints.
 706     # (This proves rather little on kernels that don't support
 707     # fast watchpoints, but still...)
 708     #
 709     if ![runto_main] then { fail "watch tests suppressed" }
 710
 711     send_gdb "set can-use-hw-watchpoints 0\n"
 712     gdb_expect {
 713       -re "$gdb_prompt $"\
 714               {pass "disable fast watches"}
 715       timeout {fail "(timeout) disable fast watches"}
 716     }
 717     send_gdb "show can-use-hw-watchpoints\n"
 718     gdb_expect {
 719       -re "Debugger's willingness to use watchpoint hardware is 0.*$gdb_prompt $"\
 720               {pass "show disable fast watches"}
 721       -re "$gdb_prompt $"\
 722               {fail "show disable fast watches"}
 723       timeout {fail "(timeout) show disable fast watches"}
 724     }
 725     send_gdb "watch ival3 if  count > 1\n"
 726     gdb_expect {
 727       -re "Watchpoint \[0-9\]*: ival3.*$gdb_prompt $"\
 728               {pass "set slow conditional watch"}
 729       -re "$gdb_prompt $"\
 730               {fail "set slow conditional watch"}
 731       timeout {fail "(timeout) set slow conditional watch"}
 732     }
 733     send_gdb "continue\n"
 734     gdb_expect {
 735       -re "Watchpoint \[0-9\]*: ival3.*Old value = 1.*New value = 2.*$gdb_prompt $"\
 736               {pass "trigger slow conditional watch"}
 737       -re "$gdb_prompt $"\
 738               {fail "trigger slow conditional watch"}
 739       timeout {fail "(timeout) trigger slow conditional watch"}
 740     }
 741
 742     # We've explicitly disabled hardware watches.  Verify that GDB
 743     #
 744     #
 745     send_gdb "rwatch ival3\n"
 746     gdb_expect {
 747       -re "Expression cannot be implemented with read/access watchpoint..*$gdb_prompt $"\
 748               {pass "rwatch disallowed when can-set-hw-watchpoints cleared"}
 749       -re "$gdb_prompt $"\
 750               {fail "rwatch disallowed when can-set-hw-watchpoints cleared"}
 751       timeout {fail "(timeout) rwatch disallowed when can-use-hw-watchpoints cleared"}
 752     }
 753
 754     # Read- and access watchpoints are unsupported on HP-UX.  Verify
 755     # that GDB gracefully responds to requests to create them.
 756     #
 757     if [istarget "hppa*-*-hpux*"] then {
 758       send_gdb "set can-use-hw-watchpoints 1\n"
 759       gdb_expect {
 760         -re "$gdb_prompt $"\
 761                 {pass "enable fast watches"}
 762         timeout {fail "(timeout) enable fast watches"}
 763       }
 764       send_gdb "rwatch ival3\n"
 765       gdb_expect {
 766         -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
 767                 {pass "read watches disallowed"}
 768         -re "$gdb_prompt $"\
 769                 {fail "read watches disallowed"}
 770         timeout {fail "(timeout) read watches disallowed"}
 771       }
 772
 773       send_gdb "awatch ival3\n"
 774       gdb_expect {
 775         -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
 776                 {pass "access watches disallowed"}
 777         -re "$gdb_prompt $"\
 778                 {fail "access watches disallowed"}
 779         timeout {fail "(timeout) access watches disallowed"}
 780       }
 781
 782 #***************
 783     }
 784 }