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# Copyright 2016-2020 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Test that gdb's (or gdbserver's) own signal handling does not
# interfere with the signal actions (dispositions, etc.) and mask
# their spawned children inherit.
#
# - If gdb inherits some signal set to SIG_IGN, so should the
# inferior, even if gdb itself chooses not to ignore the signal.
#
# - If gdb inherits some signal set to SIG_DFL, so should the inferior
# even if gdb itself ignores that signal.
#
# This requires special support in gdb/gdbserver because the exec
# family of functions does not reset the signal disposition of signals
# that are set to SIG_IGN, nor signal masks and flags.
standard_testfile
if {![is_remote host] && ![is_remote target]} {
set gdb_txt [standard_output_file gdb.txt]
set standalone_txt [standard_output_file standalone.txt]
set purely_local 1
} else {
set gdb_txt gdb.txt
set standalone_txt standalone.txt
set purely_local 0
}
remote_file host delete $gdb_txt
remote_file host delete $standalone_txt
remote_file target delete $gdb_txt
remote_file target delete $standalone_txt
set options [list debug "additional_flags=-DOUTPUT_TXT=\"$gdb_txt\""]
if {[build_executable $testfile.exp $testfile $srcfile $options]} {
untested "failed to compile"
return -1
}
set options [list debug "additional_flags=-DOUTPUT_TXT=\"$standalone_txt\""]
if {[build_executable $testfile.exp $testfile-standalone $srcfile $options]} {
untested "failed to compile"
return -1
}
# Run the program directly, and dump its initial signal actions and
# mask in "standalone.txt".
# Use remote_spawn instead of remote_exec, like how we spawn gdb.
# This is in order to take the same code code paths in dejagnu
# compared to when running the program through gdb. E.g., because
# local_exec uses -ignore SIGHUP, while remote_spawn does not, if we
# used remote_exec, the test program would start with SIGHUP ignored
# when run standalone, but not when run through gdb.
set res [remote_spawn target "$binfile-standalone"]
if { $res < 0 || $res == "" } {
untested "spawning $binfile-standalone failed"
return 1
} else {
pass "collect standalone signals state"
}
remote_close target
# Now run the program through gdb, and dump its initial signal actions
# and mask in "gdb.txt".
clean_restart $binfile
if { ! [ runto_main ] } then {
untested "failed to compile"
return -1
}
gdb_continue_to_end "collect signals state under gdb"
if {!$purely_local} {
# Copy file from target to host through build.
remote_download host [remote_upload target gdb.txt] gdb.txt
remote_download host [remote_upload target standalone.txt] standalone.txt
}
# Diff the .txt files. They should be identical.
gdb_test "shell diff -s $standalone_txt $gdb_txt" \
"Files .* are identical.*" \
"signals states are identical"
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