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      1 # This testcase is part of GDB, the GNU debugger.
      2 
      3 # Copyright 2021-2025 Free Software Foundation, Inc.
      4 
      5 # This program is free software; you can redistribute it and/or modify
      6 # it under the terms of the GNU General Public License as published by
      7 # the Free Software Foundation; either version 3 of the License, or
      8 # (at your option) any later version.
      9 #
     10 # This program is distributed in the hope that it will be useful,
     11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
     12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13 # GNU General Public License for more details.
     14 #
     15 # You should have received a copy of the GNU General Public License
     16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
     17 
     18 # Test attaching to a multi-threaded process using gdbserver's --attach flag.
     19 
     20 load_lib gdbserver-support.exp
     21 
     22 standard_testfile
     23 
     24 require allow_gdbserver_tests
     25 
     26 require can_spawn_for_attach
     27 
     28 # Start the test program, attach to it using gdbserver's --attach flag, connect
     29 # to it with GDB, check that what we see makes sense.
     30 
     31 proc run_one_test { non-stop target-non-stop } {
     32     save_vars { ::GDBFLAGS } {
     33 	# If GDB and GDBserver are both running locally, set the sysroot to avoid
     34 	# reading files via the remote protocol.
     35 	if { ![is_remote host] && ![is_remote target] } {
     36 	    set ::GDBFLAGS "$::GDBFLAGS -ex \"set sysroot\""
     37 	}
     38 
     39 	if { [prepare_for_testing "failed to prepare" $::testfile $::srcfile \
     40 		{debug pthreads additional_flags=-std=gnu99}] } {
     41 	    return -1
     42 	}
     43     }
     44 
     45     # Make sure we're disconnected, in case we're testing with an
     46     # extended-remote board, therefore already connected.
     47     gdb_test "disconnect" ".*"
     48 
     49     set target_exec [gdbserver_download_current_prog]
     50     set test_spawn_id [spawn_wait_for_attach $::binfile]
     51     set testpid [spawn_id_get_pid $test_spawn_id]
     52 
     53     lassign [gdbserver_start "" "--attach $testpid"] unused gdbserver_address
     54 
     55     gdb_test_no_output "set non-stop ${non-stop}"
     56     gdb_test_no_output "maint set target-non-stop ${target-non-stop}"
     57     gdb_target_cmd "remote" $gdbserver_address
     58 
     59     # There should be 11 threads.
     60     gdb_test "thread 11" "Switching to thread 11.*"
     61 
     62     kill_wait_spawned_process $test_spawn_id
     63     gdbserver_exit 0
     64 }
     65 
     66 foreach_with_prefix non-stop {0 1} {
     67     foreach_with_prefix target-non-stop {0 1} {
     68 	# This combination does not make sense.
     69 	if { ${non-stop} == 1 && ${target-non-stop} == 0} {
     70 	    continue
     71 	}
     72 
     73 	run_one_test ${non-stop} ${target-non-stop}
     74     }
     75 }
     76