gdb/testsuite/gdb.base/watchpoint-hw-attach.exp

   1 # Copyright 2018-2019 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 # watchpoint-hw-attach.exp -- Test if hardware watchpoints are used
  17 # when attaching to a target.
  18
  19 if {[skip_hw_watchpoint_tests]} {
  20     return 0
  21 }
  22
  23 if {![can_spawn_for_attach]} {
  24     return 0
  25 }
  26
  27 standard_testfile
  28
  29 if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
  30     return -1
  31 }
  32
  33 clean_restart $binfile
  34
  35 if ![runto_main] {
  36     untested "can't run to main"
  37     return -1
  38 }
  39
  40 # Run to the point where mypid in the test program has been
  41 # populated.
  42 gdb_breakpoint [gdb_get_line_number "pidacquired"]
  43 gdb_continue_to_breakpoint "pidacquired"
  44
  45 # Get the PID of the test process.
  46 set testpid [get_integer_valueof "mypid" 0]
  47
  48 gdb_test "detach" "Detaching from program: .*, process $testpid\r\n\\\[Inferior $decimal \\(process $testpid\\) detached\\\]"
  49
  50 if {$testpid == ""} {
  51     return -1
  52 }
  53
  54 # A clean restart is needed to force the hardware watchpoint setup
  55 # logic to run post attach rather than post inferior launch.
  56 clean_restart $binfile
  57
  58 gdb_test "attach $testpid" "Attaching to program: .*, process $testpid.*" "attach"
  59
  60 # Ensure the test program is in the top frame so the required
  61 # variables are in scope.
  62 gdb_breakpoint $srcfile:[gdb_get_line_number "pidacquired"]
  63 gdb_continue_to_breakpoint "$srcfile:pidacquired"
  64
  65 gdb_test_no_output "set should_continue = 1"
  66
  67 gdb_test "watch watched_variable" \
  68          "Hardware watchpoint $decimal: watched_variable"
  69
  70 gdb_test "continue" \
  71          "continue.*Continuing.*\.Hardware watchpoint $decimal: watched_variable.*Old value = 0.*New value = 4.*watched_variable\\);"