gdb/testsuite/gdb.base/auto-connect-native-target.exp

   1 # Copyright 2014-2019 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 # Test "set auto-connect-native-target off" and "target native" on
  17 # native targets.
  18
  19 standard_testfile
  20
  21 if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
  22     return -1
  23 }
  24
  25 # Whether this GDB is configured with a "native" target.
  26 set have_native 0
  27
  28 set test "help target native"
  29 gdb_test_multiple $test $test {
  30     -re "Undefined target command.*$gdb_prompt $" {
  31         set have_native 0
  32     }
  33     -re "Native process.*$gdb_prompt $" {
  34         set have_native 1
  35     }
  36 }
  37
  38 if { !$have_native } {
  39     unsupported "no \"target native\" support."
  40     return
  41 }
  42
  43 # Returns the topmost target pushed on the target stack.  TEST is used
  44 # as test message.
  45
  46 proc get_topmost_target {test} {
  47     global gdb_prompt
  48
  49     set topmost "unknown"
  50
  51     gdb_test_multiple "maint print target-stack" $test {
  52         -re "The current target stack is:\r\n  - (\[^ \]+) .*$gdb_prompt $" {
  53             set topmost $expect_out(1,string)
  54             pass $test
  55         }
  56     }
  57
  58     return $topmost
  59 }
  60
  61 set topmost [get_topmost_target "check whether a target is already connected"]
  62
  63 # Testing against the extended-remote board, for example?
  64 if { $topmost != "exec" } {
  65     unsupported "already connected to target $topmost."
  66     return
  67 }
  68
  69 # Check which target this board connects to.  If testing with a native
  70 # target board, this should cause the native target to auto connect.
  71 if ![runto_main] then {
  72     fail "can't run to main"
  73     return 0
  74 }
  75
  76 # Returns true if the native target is pushed on the target stack.
  77 # TEST is used as test message.
  78
  79 proc check_native_target {test} {
  80     global gdb_prompt
  81
  82     gdb_test_multiple "maint print target-stack" $test {
  83         -re " native .*$gdb_prompt $" {
  84             pass $test
  85             return 1
  86         }
  87         -re "$gdb_prompt $" {
  88             pass $test
  89         }
  90     }
  91
  92     return 0
  93 }
  94
  95 # Testing against a remote board, for example?
  96 if { ![check_native_target "check whether board tests the native target"] } {
  97     unsupported "not testing the native target."
  98     return
  99 }
 100
 101 # Kill program.  TEST is used as test message.
 102
 103 proc kill_program {test} {
 104     global gdb_prompt
 105
 106     gdb_test_multiple "kill" $test {
 107         -re "Kill the program being debugged\\? .y or n. $" {
 108             send_gdb "y\n"
 109             exp_continue
 110         }
 111         -re "$gdb_prompt $" {
 112             pass $test
 113         }
 114     }
 115 }
 116
 117 # Kill the program.  This should pop the target.  The "start" test
 118 # below will fail otherwise.
 119 kill_program "kill"
 120
 121 # Now prevent the native target from auto connecting.
 122 gdb_test_no_output "set auto-connect-native-target off"
 123
 124 # Commands that rely on the native target auto-connecting should no longer work.
 125 gdb_test "start" "Don't know how to run.*" "start no longer works"
 126
 127 # Explicitly connect to the native target.
 128 gdb_test "target native" \
 129     "Done.  Use the \"run\" command to start a process.*" \
 130     "explicitly connect to the native target"
 131
 132 proc test_native_target_remains_pushed {} {
 133     gdb_test "maint print target-stack"  \
 134         "The current target stack is:\r\n  .* native .* exec .*" \
 135         "native target remains pushed"
 136 }
 137
 138 # Test a set of "inferior gone" scenarios, making sure the target
 139 # remains pushed.
 140
 141 with_test_prefix "kill" {
 142     gdb_test "start" "main.*" "start"
 143
 144     kill_program "kill"
 145
 146     test_native_target_remains_pushed
 147 }
 148
 149 with_test_prefix "detach" {
 150     gdb_test "start" "main.*"
 151
 152     set test "detach"
 153     gdb_test_multiple $test $test {
 154         -re "Detach the program being debugged\\? .y or n. $" {
 155             send_gdb "y\n"
 156             exp_continue
 157         }
 158         -re "$gdb_prompt $" {
 159             pass $test
 160         }
 161     }
 162
 163     test_native_target_remains_pushed
 164 }
 165
 166 with_test_prefix "run to exit" {
 167     gdb_test "start" "Temporary breakpoint .* main .*"
 168
 169     gdb_test "c" "$inferior_exited_re normally.*"
 170
 171     test_native_target_remains_pushed
 172 }
 173
 174 # Now test disconnecting.  Commands that rely on the native target
 175 # auto-connecting should no longer work (again) after this.
 176
 177 with_test_prefix "disconnect" {
 178     gdb_test "start" "Temporary breakpoint .* main .*"
 179
 180     set test "disconnect"
 181     gdb_test_multiple $test $test {
 182         -re "A program is being debugged already.* .y or n. $" {
 183             send_gdb "y\n"
 184             exp_continue
 185         }
 186         -re "$gdb_prompt $" {
 187             pass $test
 188         }
 189     }
 190
 191     set topmost \
 192         [get_topmost_target "check whether the target is no longer connected"]
 193
 194     set test "no longer connected to a target"
 195     if { $topmost == "exec" } {
 196         pass $test
 197     } else {
 198         fail $test
 199     }
 200
 201     gdb_test "start" "Don't know how to run.*" "start no longer works"
 202 }
 203
 204 # Reenable auto-connecting to the native target.  Plain "start" should
 205 # start working again.
 206 gdb_test_no_output "set auto-connect-native-target on"
 207
 208 gdb_test "start" "Temporary breakpoint .* main .*" \
 209     "start auto-connects to the native target after reenabling auto-connect"