gdb/testsuite/gdb.base/watch-cond.exp

   1 # Copyright 2010-2024 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 #
  17 # Tests involving watchpoint conditions with local expressions.
  18 #
  19
  20 # The allow_hw_watchpoint_tests checks if watchpoints are supported by the
  21 # processor.  On PowerPC, the check runs a small test program under gdb
  22 # to determine if the Power processor supports HW watchpoints.  The check
  23 # must be done before starting the test so as to not disrupt the execution
  24 # of the actual test.
  25
  26 set allow_hw_watchpoint_tests_p [allow_hw_watchpoint_tests]
  27
  28 standard_testfile .c
  29
  30 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {
  31     return -1
  32 }
  33
  34 # Disable hardware watchpoints if necessary.
  35 if {!$allow_hw_watchpoint_tests_p} {
  36     gdb_test_no_output "set can-use-hw-watchpoints 0" ""
  37 }
  38
  39 if {![runto_main]} {
  40     return
  41 }
  42
  43 gdb_test "watch global if q > 10" \
  44     "atchpoint .*: global" \
  45     "set write watchpoint on global variable, local condition"
  46
  47 gdb_test "continue" \
  48     "Old value = 10.*New value = 11.*" \
  49     "watchpoint with global expression, local condition evaluates in correct frame"
  50
  51 clean_restart ${testfile}
  52
  53 # Disable hardware watchpoints if necessary.
  54 if {!$allow_hw_watchpoint_tests_p} {
  55     gdb_test_no_output "set can-use-hw-watchpoints 0" ""
  56 }
  57
  58 if {![runto_main]} {
  59     return
  60 }
  61
  62 gdb_test "watch q if q > 10" \
  63     "atchpoint .*: q" \
  64     "set write watchpoint on local variable, local condition"
  65
  66 gdb_test "continue" \
  67     "Old value = 10.*New value = 11.*" \
  68     "watchpoint with local expression, local condition evaluates in correct frame"
  69
  70 clean_restart ${testfile}
  71
  72 # Disable hardware watchpoints if necessary.
  73 if {!$allow_hw_watchpoint_tests_p} {
  74     gdb_test_no_output "set can-use-hw-watchpoints 0" ""
  75 }
  76
  77 if {![runto_main]} {
  78     return
  79 }
  80
  81 gdb_test "watch global2" \
  82     "atchpoint.*" \
  83     "set write watchpoint on global2 variable"
  84
  85 gdb_test "continue" \
  86     "Old value = 0.*New value = 1.*" \
  87     "watchpoint on global2 variable triggers"
  88
  89 gdb_test_no_output "condition 2 *foo > 10" \
  90     "condition of watchpoint 2 changes"
  91
  92 gdb_test "continue" \
  93     ".*condition cannot be tested in the current scope.*Old value = 1.*New value = 2.*" \
  94     "watchpoint stops with untestable local expression"