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      1 # Copyright 2022-2024 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 # This test aims at testing various operations after getting rid of an inferior
     17 # that was running in background, or while we have an inferior running in
     18 # background.  The original intent was to expose cases where the commit-resumed
     19 # state of the process stratum target was not reset properly after killing an
     20 # inferior running in background, which would be a problem when trying to run
     21 # again.  The test was expanded to test various combinations of
     22 # run-control-related actions done with an inferior running in background.
     23 
     24 require !use_gdb_stub
     25 
     26 standard_testfile
     27 
     28 if {[build_executable "failed to prepare" $testfile $srcfile]} {
     29     return
     30 }
     31 
     32 # Run one variation of the test:
     33 #
     34 # 1. Start an inferior in the background with "run &"
     35 # 2. Do action 1
     36 # 3. Do action 2
     37 #
     38 # Action 1 indicates what to do with the inferior running in background:
     39 #
     40 #  - kill: kill it
     41 #  - detach: detach it
     42 #  - add: add a new inferior and switch to it, leave the inferior running in
     43 #    background alone
     44 #  - none: do nothing, leave the inferior running in background alone
     45 #
     46 # Action 2 indicates what to do after that:
     47 #
     48 #  - start: use the start command
     49 #  - run: use the run command
     50 #  - attach: start a process outside of GDB and attach it
     51 proc do_test { action1 action2 } {
     52     save_vars { ::GDBFLAGS } {
     53 	append ::GDBFLAGS " -ex \"maintenance set target-non-stop on\""
     54 	clean_restart $::binfile
     55     }
     56 
     57     # Ensure we are at least after the getpid call, should we need it.
     58     if { ![runto "after_getpid"] } {
     59 	return
     60     }
     61 
     62     # Some commands below ask for confirmation.  Turn that off for simplicity.
     63     gdb_test "set confirm off"
     64     gdb_test -no-prompt-anchor "continue &"
     65 
     66     if { $action1 == "kill" } {
     67 	gdb_test "kill" "Inferior 1 .* killed.*"
     68     } elseif { $action1 == "detach" } {
     69 	set child_pid [get_integer_valueof "mypid" -1]
     70 	if { $child_pid == -1 } {
     71 	    fail "failed to extract child pid"
     72 	    return
     73 	}
     74 
     75 	gdb_test "detach" "Inferior 1 .* detached.*" "detach from first instance"
     76 
     77 	# Kill the detached process, to avoid hanging when exiting GDBserver,
     78 	# when testing with the native-extended-gdbserver board.
     79 	remote_exec target "kill $child_pid"
     80     } elseif { $action1 == "add" } {
     81 	gdb_test "add-inferior -exec $::binfile" \
     82 	    "Added inferior 2 on connection 1.*" "add-inferior"
     83 	gdb_test "inferior 2" "Switching to inferior 2 .*"
     84     } elseif { $action1 == "none" } {
     85 
     86     } else {
     87 	error "invalid action 1"
     88     }
     89 
     90     if { $action2 == "start" } {
     91 	gdb_test "start" "Temporary breakpoint $::decimal\(?:\.$::decimal\)?, main .*"
     92     } elseif { $action2 == "run" } {
     93 	gdb_test "break main" "Breakpoint $::decimal at $::hex.*"
     94 	gdb_test "run" "Breakpoint $::decimal\(?:\.$::decimal\)?, main .*"
     95     } elseif { $action2 == "attach" } {
     96 	set test_spawn_id [spawn_wait_for_attach $::binfile]
     97 	set test_pid [spawn_id_get_pid $test_spawn_id]
     98 
     99 	if { [gdb_attach $test_pid] } {
    100 	    gdb_test "detach" "Inferior $::decimal .* detached.*" \
    101 		"detach from second instance"
    102 	}
    103 
    104 	# Detach and kill this inferior so we don't leave it around.
    105 	kill_wait_spawned_process $test_spawn_id
    106     } else {
    107 	error "invalid action 2"
    108     }
    109 }
    110 
    111 foreach_with_prefix action1 { kill detach add none } {
    112     foreach_with_prefix action2 { start run attach } {
    113 	if { $action2 == "attach" && ![can_spawn_for_attach] } {
    114 	   continue
    115 	}
    116 	do_test $action1 $action2
    117     }
    118 }
    119