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.
89 lines
2.7 KiB
Text
89 lines
2.7 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 x86-record_goto.S
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if [prepare_for_testing step.exp $testfile $srcfile] {
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return -1
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}
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if ![runto_main] {
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return -1
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}
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# trace the call to the test function
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gdb_test_no_output "record btrace"
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gdb_test "next"
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proc check_replay_at { insn } {
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gdb_test "info record" [join [list \
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"Active record target: record-btrace" \
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"Recorded 40 instructions in 16 functions for .*" \
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"Replay in progress\. At instruction $insn\." \
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] "\r\n"]
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}
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# let's start by stepping back into the function we just returned from
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gdb_test "reverse-step" ".*fun4\.5.*"
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with_test_prefix "reverse-step to 39" { check_replay_at 39 }
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# again
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gdb_test "reverse-step" ".*fun3\.4.*"
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with_test_prefix "reverse-step to 37" { check_replay_at 37 }
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# and again
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gdb_test "reverse-step" ".*fun2\.3.*"
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with_test_prefix "reverse-step to 35" { check_replay_at 35 }
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# once more
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gdb_test "reverse-step" ".*fun1\.2.*"
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with_test_prefix "reverse-step to 33" { check_replay_at 33 }
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# and out again the other side
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gdb_test "reverse-step" ".*fun2\.2.*"
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with_test_prefix "reverse-step to 30" { check_replay_at 30 }
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# once again
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gdb_test "reverse-step" ".*fun3\.3.*"
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with_test_prefix "reverse-step to 27" { check_replay_at 27 }
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# and back the way we came
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gdb_test "step" ".*fun2\.2.*"
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with_test_prefix "step to 30" { check_replay_at 30 }
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gdb_test "step" ".*fun1\.2.*"
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with_test_prefix "step to 33" { check_replay_at 33 }
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gdb_test "step" ".*fun2\.3.*"
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with_test_prefix "step to 35" { check_replay_at 35 }
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gdb_test "step" ".*fun3\.4.*"
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with_test_prefix "step to 37" { check_replay_at 37 }
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gdb_test "step" ".*fun4\.5.*"
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with_test_prefix "step to 39" { check_replay_at 39 }
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gdb_test "step" ".*main\.3.*"
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gdb_test "info record" [join [list \
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"Active record target: record-btrace" \
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"Recorded 40 instructions in 16 functions for \[^\\\r\\\n\]*" \
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] "\r\n"] "step to live"
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