gdb/testsuite/gdb.base/watchpoints.exp

   1 # Copyright 2009-2019 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 3 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, see <http://www.gnu.org/licenses/>.
  15
  16 # This file was written by Pierre Muller. (muller@ics.u-strasbg.fr)
  17
  18
  19 standard_testfile
  20
  21 set wp_set 1
  22
  23 if [get_compiler_info] {
  24     return -1
  25 }
  26
  27 if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
  28     return -1
  29 }
  30
  31 with_test_prefix "before inferior start" {
  32     # Ensure that if we turn off hardware watchpoints and set a watch point
  33     # before starting the inferior the watchpoint created will not be a
  34     # hardware watchpoint.
  35     gdb_test_no_output "set can-use-hw-watchpoints 0" ""
  36     gdb_test "watch ival1" "Watchpoint \[0-9\]+: ival1" \
  37         "create watchpoint"
  38
  39     # The next tests are written to match the current state of gdb: access
  40     # and read watchpoints require hardware watchpoint support, with this
  41     # turned off these can't be created.
  42     gdb_test "awatch ival1" \
  43         "Can't set read/access watchpoint when hardware watchpoints are disabled." \
  44         "create access watchpoint"
  45     gdb_test "rwatch ival1" \
  46         "Can't set read/access watchpoint when hardware watchpoints are disabled." \
  47         "create read watchpoint"
  48 }
  49
  50     # This will turn hardware watchpoints back on and delete the watchpoint
  51     # we just created.
  52     clean_restart ${binfile}
  53
  54     # Disable hardware watchpoints if necessary.
  55     if [target_info exists gdb,no_hardware_watchpoints] {
  56         gdb_test_no_output "set can-use-hw-watchpoints 0" ""
  57     }
  58
  59     runto_main
  60     gdb_test "watch ival1" ".*" ""
  61     gdb_test "watch ival3" ".*" ""
  62
  63     set prev_timeout $timeout
  64     set timeout 600
  65
  66     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival1.*Old value = -1.*New value = 0.*ival1 = count; ival2 = count;.*" "watchpoint hit, first time"
  67
  68     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count; ival4 = count;.*" "watchpoint hit, first time"
  69
  70     # Check that the ival3 hit count is reported correctly
  71     gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 1 time.*" "watchpoint hit count is 1"
  72
  73     # Continue until the next change for ival1, from 0 to 1.
  74     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival1.*Old value = 0.*New value = 1.*ival1 = count; ival2 = count;.*" "watchpoint ival1 hit, second time"
  75
  76     # Check that the hit count for ival1 is reported correctly
  77     gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival1\r\n\[ \t]+breakpoint already hit 2 times.*" "watchpoint ival1 hit count is 2"
  78
  79     # Continue until the next change for ival3, from 0 to 1.
  80     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit, second time"
  81
  82     # Check that the hit count is reported correctly
  83     gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 2 times.*" "watchpoint hit count is 2"
  84
  85     # Continue until the next change, from 1 to 2.
  86     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival1.*Old value = 1.*New value = 2.*ival1 = count; ival2 = count;.*" "watchpoint ival1 hit, third time"
  87
  88     # Check that the hit count is reported correctly
  89     gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival1\r\n\[ \t]+breakpoint already hit 3 times.*" "watchpoint ival1 hit count is 3"
  90     # Disable ival1 watchpoint
  91     gdb_test_no_output "disable 2" ""
  92
  93     # Continue until the next change, from 1 to 2.
  94     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 1.*New value = 2.*ival3 = count; ival4 = count;.*" "watchpoint hit, third time"
  95
  96     # Check that the hit count is reported correctly
  97     gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 3 times.*" "watchpoint hit count is 3"
  98
  99     # Continue until the next change, from 2 to 3.
 100     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 2.*New value = 3.*ival3 = count; ival4 = count;.*" "watchpoint hit, fourth time"
 101
 102     # Check that the hit count is reported correctly
 103     gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 4 times.*" "watchpoint hit count is 4"
 104
 105     # Continue until the next change, from 3 to 4.
 106     # Note that this one is outside the loop.
 107
 108     gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 3.*New value = 4.*ival3 = count; ival4 = count;.*" "watchpoint hit, fifth time"
 109
 110     # Check that the hit count is reported correctly
 111     gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 5 times.*" "watchpoint hit count is 5"
 112
 113 set timeout $prev_timeout