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      1 # This testcase is part of GDB, the GNU debugger.
      2 
      3 # Copyright 2020-2024 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 process, as a second inferior, through a
     19 # gdbserver that does not support multi-process extensions.
     20 
     21 load_lib gdbserver-support.exp
     22 
     23 standard_testfile
     24 
     25 require allow_gdbserver_tests
     26 
     27 require can_spawn_for_attach
     28 
     29 if {[build_executable "build" $testfile $srcfile {debug}] == -1} {
     30     return -1
     31 }
     32 
     33 proc test {target_non_stop} {
     34     global binfile
     35     global gdb_prompt
     36 
     37     save_vars { ::GDBFLAGS } {
     38 	# If GDB and GDBserver are both running locally, set the sysroot to avoid
     39 	# reading files via the remote protocol.
     40 	if { ![is_remote host] && ![is_remote target] } {
     41 	    set ::GDBFLAGS "${::GDBFLAGS} -ex \"set sysroot\""
     42 	}
     43 	set ::GDBFLAGS \
     44 	    "${::GDBFLAGS} -ex \"set remote multiprocess-feature-packet off\""
     45 	set ::GDBFLAGS \
     46 	    "${::GDBFLAGS} -ex \"maint set target-non-stop ${target_non_stop}\""
     47 	clean_restart ${binfile}
     48     }
     49 
     50     # Start the first inferior.
     51     if {![runto_main]} {
     52 	return
     53     }
     54 
     55     # The second inferior is an extended remote.
     56     gdb_test "add-inferior -no-connection" "Added inferior 2.*" \
     57 	"add the second inferior"
     58     gdb_test "inferior 2" ".*Switching to inferior 2.*" \
     59 	"switch to inferior 2"
     60     set res [gdbserver_start "--multi" ""]
     61     set gdbserver_gdbport [lindex $res 1]
     62     gdb_target_cmd "extended-remote" $gdbserver_gdbport
     63 
     64     # Start a program, then attach to it.
     65     set spawn_id_list [spawn_wait_for_attach [list $binfile]]
     66     set test_spawn_id [lindex $spawn_id_list 0]
     67     set testpid [spawn_id_get_pid $test_spawn_id]
     68     gdb_test_multiple "attach $testpid" "attach to the program via remote" {
     69 	-re "Attaching to Remote target.*\[\r\n\]+$gdb_prompt " {
     70 	    pass $gdb_test_name
     71 	}
     72     }
     73 
     74     # Check that we have two threads.  Bad GDB duplicated the
     75     # thread coming from the remote when target-non-stop is off;
     76     # or hanged during attach when target-non-stop is on.
     77     gdb_test "info threads" \
     78 	[multi_line \
     79 	     "  Id\[^\r\n\]+" \
     80 	     "  1\.1\[^\r\n\]+" \
     81 	     ". 2\.1\[^\r\n\]+"
     82 	]
     83 
     84     # Clean the spawned process and gdbserver.
     85     gdbserver_exit 0
     86     kill_wait_spawned_process $test_spawn_id
     87 }
     88 
     89 foreach_with_prefix target_non_stop {off on} {
     90     test $target_non_stop
     91 }
     92