1# This testcase is part of GDB, the GNU debugger. 2 3# Copyright 2016-2019 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 attach / detach from a process that uses raw clone. We use raw 19# clone as proxy for when libthread_db is not available. 20 21# This only works on targets with the Linux kernel. 22if ![istarget *-*-linux*] { 23 return 24} 25 26if {![can_spawn_for_attach]} { 27 return 0 28} 29 30standard_testfile 31 32if [prepare_for_testing "failed to prepare" $testfile $srcfile {debug}] { 33 return -1 34} 35 36clean_restart ${binfile} 37 38set test_spawn_id [spawn_wait_for_attach $binfile] 39set testpid [spawn_id_get_pid $test_spawn_id] 40 41# Native/gdbserver. 42set thread_re "(LWP $decimal|Thread )" 43 44# Try attach / detach a few times, in case GDB ends up with stale 45# state after detaching. 46 47set attempts 3 48for {set attempt 1} {$attempt <= $attempts} {incr attempt} { 49 with_test_prefix "fg attach $attempt" { 50 51 gdb_test "attach $testpid" \ 52 "Attaching to program.*process $testpid.*" \ 53 "attach" 54 55 gdb_test "info threads" \ 56 "1.*${thread_re}.*\r\n.*2.*${thread_re}.*" \ 57 "info threads shows two LWPs" 58 59 gdb_test "detach" "Detaching from .*, process $testpid\r\n\\\[Inferior $decimal \\(.*\\) detached\\\]" 60 } 61} 62 63# Same, but use async/background attach. 64 65# If debugging with target remote, check whether the all-stop variant 66# of the RSP is being used. If so, we can't run the background tests. 67if {[target_info exists gdb_protocol] 68 && ([target_info gdb_protocol] == "remote" 69 || [target_info gdb_protocol] == "extended-remote")} { 70 71 set test "maint show target-non-stop" 72 gdb_test_multiple "maint show target-non-stop" $test { 73 -re "(is|currently) on.*$gdb_prompt $" { 74 } 75 -re "(is|currently) off.*$gdb_prompt $" { 76 unsupported "bg attach: can't issue info threads while target is running" 77 return 0 78 } 79 } 80} 81 82set attempts 3 83for {set attempt 1} {$attempt <= $attempts} {incr attempt} { 84 with_test_prefix "bg attach $attempt" { 85 86 gdb_test "attach $testpid &" \ 87 "Attaching to program.*process $testpid.*" \ 88 "attach" 89 90 gdb_test "info threads" \ 91 "1.*${thread_re}.*\\(running\\)\r\n.*2.*${thread_re}.*\\(running\\)" \ 92 "info threads shows two LWPs" 93 94 gdb_test "detach" "Detaching from .*, process $testpid\r\n\\\[Inferior $decimal \\(.*\\) detached\\\]" 95 } 96} 97 98kill_wait_spawned_process $test_spawn_id 99