| # Copyright 1998-2016 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/>. |
| |
| # This test helps making sure QTro support doesn't regress. If the |
| # stub supports the newer qXfer:traceframe-info:read, then the QTro |
| # paths in the stub are never exercised. PR remote/15455 is an |
| # example of a regression that unfortunately went unnoticed for long. |
| |
| load_lib trace-support.exp |
| |
| standard_testfile |
| |
| if {[prepare_for_testing $testfile.exp $testfile $srcfile debug]} { |
| return -1 |
| } |
| clean_restart $testfile |
| |
| if ![runto_main] { |
| fail "Can't run to main to check for trace support" |
| return -1 |
| } |
| |
| # Check whether we're testing with the remote or extended-remote |
| # targets, and whether the target supports tracepoints. |
| |
| if ![gdb_is_target_remote] { |
| return -1 |
| } |
| |
| if ![gdb_target_supports_trace] { |
| unsupported "Current target does not support trace" |
| return -1 |
| } |
| |
| # Run a trace session, stop it, and then inspect the resulting trace |
| # frame (IOW, returns while tfind mode is active). |
| proc prepare_for_trace_disassembly { } { |
| global gdb_prompt |
| gdb_breakpoint "end" |
| |
| gdb_test "trace subr" "Tracepoint .*" \ |
| "tracepoint at subr" |
| |
| gdb_trace_setactions "define action" \ |
| "" \ |
| "collect parm" "^$" |
| |
| gdb_test_no_output "tstart" |
| |
| gdb_test "continue" ".*Breakpoint \[0-9\]+, end .*" \ |
| "advance through tracing" |
| |
| gdb_test "tstatus" ".*Collected 1 trace frame.*" \ |
| "collected 1 trace frame" |
| |
| gdb_test_no_output "tstop" |
| |
| gdb_tfind_test "tfind start" "start" "0" |
| } |
| |
| clean_restart $testfile |
| runto_main |
| |
| # Trace once, issuing a tstatus, so that GDB tries |
| # qXfer:trace-frame-info:read. |
| prepare_for_trace_disassembly |
| |
| # Now check whether the packet is supported. |
| set traceframe_info_supported -1 |
| set test "probe for traceframe-info support" |
| gdb_test_multiple "show remote traceframe-info-packet" $test { |
| -re ".*Support for .* is auto-detected, currently (\[a-z\]*).*$gdb_prompt $" { |
| set status $expect_out(1,string) |
| |
| if { $status == "enabled" } { |
| set traceframe_info_supported 1 |
| } else { |
| set traceframe_info_supported 0 |
| } |
| |
| pass $test |
| } |
| } |
| if { $traceframe_info_supported == -1 } { |
| return -1 |
| } |
| |
| # Check whether we're testing with our own GDBserver. |
| set is_gdbserver [target_is_gdbserver] |
| if { $is_gdbserver == -1 } { |
| return -1 |
| } |
| |
| # Now disassemble (IOW, read from read-only memory) while inspecting a |
| # trace frame, twice. Once with qXfer:traceframe-info:read left to |
| # auto, and once with it disabled, exercising the QTro fallback path |
| # in the stub side. |
| foreach tfinfo { auto off } { |
| with_test_prefix "qXfer:traceframe-info:read $tfinfo" { |
| |
| clean_restart $testfile |
| runto_main |
| gdb_test_no_output "set remote traceframe-info-packet $tfinfo" |
| |
| prepare_for_trace_disassembly |
| |
| set test "trace disassembly" |
| gdb_test_multiple "disassemble subr" $test { |
| -re "<(\.\[0-9\]+|)>:.*End of assembler dump.*$gdb_prompt $" { |
| pass $test |
| } |
| -re "Cannot access memory.*$gdb_prompt $" { |
| if { $traceframe_info_supported == 0 } { |
| # If qXfer:traceframe-info:read is not supported, |
| # then there should be QTro support. |
| fail $test |
| } elseif { $tfinfo == off && $is_gdbserver == 1 } { |
| # We we're testing with GDBserver, we know both |
| # qXfer:traceframe-info:read and QTro are |
| # supported (although supporting the former only |
| # would be sufficient), so issue a FAIL instead of |
| # UNSUPPORTED, giving us better visibility of QTro |
| # regressions. |
| fail $test |
| } else { |
| # Otherwise, qXfer:traceframe-info:read is |
| # supported, making QTro optional, so this isn't |
| # really a failure. |
| unsupported "$test (no QTro support)" |
| } |
| } |
| } |
| } |
| } |