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# Copyright 2024-2025 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/>. */
#
# Starts a communication with gdbsever setting the remotelog file.
# Modifies the remotelog with update_log proc, injects an error message
# instead of the expected replay to the vMustReplyEmpty packet in order
# to test GDB reacts to the error response properly. After the remotelog
# modification, this test restarts GDB and starts communication with gdbreply
# instead of the gdbserver using the remotelog.
load_lib gdbserver-support.exp
load_lib gdbreplay-support.exp
require allow_gdbserver_tests
require has_gdbreplay
standard_testfile
if { [prepare_for_testing "failed to prepare" $testfile $srcfile] } {
return -1
}
# Connect to gdbserver and run to a breakpoint in main. Record the
# remotelogfile into the global REMOTELOG.
proc_with_prefix record_initial_logfile {} {
global binfile
global remotelog
# Make sure we're disconnected, in case we're testing with an
# extended-remote board, therefore already connected.
gdb_test "disconnect" ".*"
gdb_test_no_output "set sysroot" \
"setting sysroot before starting gdbserver"
# Start gdbserver like:
# gdbserver :PORT ....
set res [gdbserver_start "" $binfile]
set gdbserver_protocol [lindex $res 0]
set gdbserver_gdbport [lindex $res 1]
# The replay log is placed in 'replay.log'.
set remotelog [standard_output_file replay.log]
gdb_test_no_output "set remotelogfile $remotelog" \
"setup remotelogfile"
# Connect to gdbserver.
if {![gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport] == 0} {
unsupported "$testfile (couldn't start gdbserver)"
return
}
# If we're connecting as 'remote' then we can't use 'runto'.
gdb_breakpoint main
gdb_continue_to_breakpoint "continuing to main"
}
# Connect to gdbreply using the global REMOTELOG. Runs to a breakpoint
# in main.
proc_with_prefix replay_without_error {} {
global binfile
global remotelog
clean_restart $binfile
# Make sure we're disconnected, in case we're testing with an
# extended-remote board, therefore already connected.
gdb_test "disconnect" ".*"
gdb_test_no_output "set sysroot" "setting sysroot"
set res [gdbreplay_start $remotelog]
set gdbserver_protocol [lindex $res 0]
set gdbserver_gdbport [lindex $res 1]
# Connect to gdbreplay.
if {![gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport] == 0} {
unsupported "$testfile (couldn't start gdbreplay)"
return
}
gdb_breakpoint main
gdb_continue_to_breakpoint "continue to main"
}
# Create a modified copy of global REMOTELOG, returning an error for the
# vMustReplyEmpty packet. Then use gdbreplay to play back the modified
# copy of REMOTELOG. Attempt to connect to the remote and expect to see
# the error reported by GDB.
proc_with_prefix replay_with_mustreplyempty_error {} {
global binfile
global remotelog
global testfile
set newline E.errtext
set output_file [standard_output_file ${testfile}_out.log]
# Modify the log file by changing the *response* to
# the vMustReplayEmty packet to an error.
update_log $remotelog $output_file "vMustReplyEmpty" $newline
clean_restart $binfile
# Make sure we're disconnected, in case we're testing with an
# extended-remote board, therefore already connected.
gdb_test "disconnect" ".*"
gdb_test_no_output "set sysroot"
set res [gdbreplay_start $output_file]
set gdbserver_protocol [lindex $res 0]
set gdbserver_gdbport [lindex $res 1]
# Connect to gdbreplay.
gdb_assert {[gdb_target_cmd_ext $gdbserver_protocol $gdbserver_gdbport \
".*Remote replied unexpectedly to 'vMustReplyEmpty': E.errtext"] == 0} \
"remote replied with an error"
}
record_initial_logfile
replay_without_error
replay_with_mustreplyempty_error
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