52834460bc
Provide to_resume and to_wait target methods for the btrace record target to allow reverse stepping and replay support. Replay is limited in the sense that only stepping and source correlation are supported. We do not record data and thus can not show variables. Non-stop mode is not working. Do not allow record-btrace in non-stop mode. 2014-01-16 Markus Metzger <markus.t.metzger@intel.com> * btrace.h (btrace_thread_flag): New. (struct btrace_thread_info) <flags>: New. * record-btrace.c (record_btrace_resume_thread) (record_btrace_find_thread_to_move, btrace_step_no_history) (btrace_step_stopped, record_btrace_start_replaying) (record_btrace_step_thread, record_btrace_decr_pc_after_break) (record_btrace_find_resume_thread): New. (record_btrace_resume, record_btrace_wait): Extend. (record_btrace_can_execute_reverse): New. (record_btrace_open): Fail in non-stop mode. (record_btrace_set_replay): Split into this, ... (record_btrace_stop_replaying): ... this, ... (record_btrace_clear_histories): ... and this. (init_record_btrace_ops): Init to_can_execute_reverse. * NEWS: Announce it. testsuite/ * gdb.btrace/delta.exp: Check reverse stepi. * gdb.btrace/tailcall.exp: Update. Add stepping tests. * gdb.btrace/finish.exp: New. * gdb.btrace/next.exp: New. * gdb.btrace/nexti.exp: New. * gdb.btrace/record_goto.c: Add comments. * gdb.btrace/step.exp: New. * gdb.btrace/stepi.exp: New. * gdb.btrace/multi-thread-step.c: New. * gdb.btrace/multi-thread-step.exp: New. * gdb.btrace/rn-dl-bind.c: New. * gdb.btrace/rn-dl-bind.exp: New. * gdb.btrace/data.c: New. * gdb.btrace/data.exp: New. * gdb.btrace/Makefile.in (EXECUTABLES): Add new. doc/ * gdb.texinfo: Document limited reverse/replay support for target record-btrace.
135 lines
4 KiB
Text
135 lines
4 KiB
Text
# This testcase is part of GDB, the GNU debugger.
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#
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# Copyright 2013 Free Software Foundation, Inc.
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#
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# Contributed by Intel Corp. <markus.t.metzger@intel.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# check for btrace support
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if { [skip_btrace_tests] } { return -1 }
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# start inferior
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standard_testfile
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if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" "$binfile" executable {debug}] != "" } {
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return -1
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}
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clean_restart $testfile
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if ![runto_main] {
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return -1
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}
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# set up breakpoints
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set bp_1 [gdb_get_line_number "bp.1" $srcfile]
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set bp_2 [gdb_get_line_number "bp.2" $srcfile]
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set bp_3 [gdb_get_line_number "bp.3" $srcfile]
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proc gdb_cont_to_line { line } {
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gdb_breakpoint $line
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gdb_continue_to_breakpoint "cont to $line" ".*$line\r\n.*"
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delete_breakpoints
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}
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# trace the code between the two breakpoints
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delete_breakpoints
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gdb_cont_to_line $srcfile:$bp_1
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# make sure GDB knows about the new thread
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gdb_test "info threads" ".*"
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gdb_test_no_output "record btrace"
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gdb_cont_to_line $srcfile:$bp_2
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# navigate in the trace history for both threads
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with_test_prefix "navigate" {
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gdb_test "thread 1" ".*"
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with_test_prefix "thread 1" {
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gdb_test "record goto begin" ".*"
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gdb_test "info record" ".*Replay in progress\. At instruction 1\."
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}
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gdb_test "thread 2" ".*"
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with_test_prefix "thread 2" {
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gdb_test "record goto begin" ".*"
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gdb_test "info record" ".*Replay in progress\. At instruction 1\."
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}
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}
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# step both threads
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with_test_prefix "step" {
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gdb_test "thread 1" ".*"
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with_test_prefix "thread 1" {
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gdb_test "info record" ".*Replay in progress\. At instruction 1\."
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gdb_test "stepi" ".*"
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gdb_test "info record" ".*Replay in progress\. At instruction 2\."
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}
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gdb_test "thread 2" ".*"
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with_test_prefix "thread 2" {
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gdb_test "info record" ".*Replay in progress\. At instruction 1\."
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gdb_test "stepi" ".*"
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gdb_test "info record" ".*Replay in progress\. At instruction 2\."
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}
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}
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# run to the end of the history for both threads
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with_test_prefix "cont" {
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gdb_test "thread 1" ".*"
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with_test_prefix "thread 1" {
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gdb_test "info record" ".*Replay in progress\. At instruction 2\."
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gdb_test "continue" "No more reverse-execution history.*"
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}
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gdb_test "thread 2" ".*"
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with_test_prefix "thread 2" {
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gdb_test "info record" ".*Replay in progress\. At instruction 2\."
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gdb_test "continue" "No more reverse-execution history.*"
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}
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}
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# reverse-step both threads
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with_test_prefix "reverse-step" {
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gdb_test "thread 1" ".*"
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with_test_prefix "thread 1" {
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gdb_test "reverse-stepi" ".*"
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gdb_test "info record" ".*Replay in progress\..*"
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}
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gdb_test "thread 2" ".*"
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with_test_prefix "thread 2" {
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gdb_test "reverse-stepi" ".*"
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gdb_test "info record" ".*Replay in progress\..*"
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}
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}
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# both threads are still replaying
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with_test_prefix "check" {
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gdb_test "thread 1" ".*"
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with_test_prefix "thread 1" {
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gdb_test "info record" ".*Replay in progress\..*"
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}
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gdb_test "thread 2" ".*"
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with_test_prefix "thread 2" {
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gdb_test "info record" ".*Replay in progress\..*"
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}
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}
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# navigate back into the history for thread 1 and continue thread 2
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with_test_prefix "cont" {
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gdb_test "thread 1" ".*"
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with_test_prefix "thread 1" {
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gdb_test "record goto begin" ".*"
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gdb_test "info record" ".*Replay in progress\. At instruction 1\."
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}
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gdb_test "thread 2" ".*"
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with_test_prefix "thread 2" {
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gdb_test "record goto end" ".*"
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gdb_cont_to_line $srcfile:$bp_3
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}
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}
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