gdb/testsuite/gdb.btrace/reconnect.exp

# This testcase is part of GDB, the GNU debugger.
#
# Copyright 2016-2020 Free Software Foundation, Inc.
#
# Contributed by Intel Corp. <tim.wiederhake@intel.com>
#
# 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/>.

load_lib gdbserver-support.exp

if { [skip_btrace_tests] } {
    unsupported "target does not support record-btrace"
    return -1
}
if { [skip_gdbserver_tests] } {
    unsupported "target does not support gdbserver"
    return -1
}

standard_testfile
if [prepare_for_testing "failed to prepare" $testfile $srcfile] {
    return -1
}

# Make sure we're disconnected and no recording is active, in case
# we're testing with an extended-remote board, therefore already
# connected.
with_test_prefix "preparation" {
  gdb_test "record stop" ".*"
  gdb_test "disconnect" ".*"
}

# Start fresh gdbserver.
set gdbserver_reconnect_p 1
set res [gdbserver_start "" $binfile]
set gdbserver_protocol [lindex $res 0]
set gdbserver_gdbport [lindex $res 1]
gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport

# Create a record, check, reconnect
with_test_prefix "first" {
  gdb_test_no_output "record btrace" "record btrace enable"
  gdb_test "stepi 19" "0x.* in .* from .*"

  gdb_test "info record" [multi_line \
    "Active record target: .*" \
    "Recorded 19 instructions in .+ functions \\(. gaps\\) for thread 1 \\(Thread .*\\)."
  ]

  gdb_test "disconnect" "Ending remote debugging."
  gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport
}

# Test if we can access the recorded data from first connect.
# Note: BTS loses the first function call entry with its associated
# instructions for technical reasons.  This is why we test for
# "a number between 10 and 19", so we catch at least the case where
# there are 0 instructions in the record.
with_test_prefix "second" {
  gdb_test "info record" [multi_line \
    "Active record target: .*" \
    "Recorded 1. instructions in .+ functions \\(. gaps\\) for thread 1 \\(Thread .*\\)."
  ]

  gdb_test "record stop" "Process record is stopped and all execution logs are deleted."

  gdb_test "disconnect" "Ending remote debugging."
  gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport
}

# Test that recording is now off.
with_test_prefix "third" {
  gdb_test "info record" "No record target is currently active."
}