mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-03-01 13:26:47 +08:00
c0272db585
This patch allows gdbserver to continue recording after disconnect. On reconnect, the recorded data is accessible to gdb as if no disconnect happened. A possible application for this feature is remotely examine bugs that occur at irregular intervals, where maintaining a gdb connection is inconvenient. This also fixes the issue mentioned here: https://sourceware.org/ml/gdb-patches/2015-11/msg00424.html Signed-off-by: Tim Wiederhake <tim.wiederhake@intel.com> gdb/ChangeLog: * NEWS: Resume btrace on reconnect. * record-btrace.c: Added record-btrace.h include. (record_btrace_open): Split into this and ... (record_btrace_push_target): ... this. (record_btrace_disconnect): New function. (init_record_btrace_ops): Use record_btrace_disconnect. * record-btrace.h: New file. * remote.c: Added record-btrace.h include. (remote_start_remote): Check recording status. (remote_btrace_maybe_reopen): New function. gdb/doc/ChangeLog: * gdb.texinfo: Resume btrace on reconnect. gdb/testsuite/ChangeLog: * gdb.btrace/reconnect.c: New file. * gdb.btrace/reconnect.exp: New file. Change-Id: I95e8b0ab8a89e58591aba0e63818cee82fd211bc
80 lines
2.7 KiB
Plaintext
80 lines
2.7 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
|
|
#
|
|
# Copyright 2016 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] } { return -1 }
|
|
if { [skip_gdbserver_tests] } { return -1 }
|
|
|
|
standard_testfile
|
|
if [prepare_for_testing $testfile.exp $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 target.*"
|
|
|
|
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."
|
|
}
|