--- /dev/null
+# Copyright 1998-2013 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.
+
+proc gdb_is_target_remote { } {
+ global gdb_prompt
+
+ set test "probe for target remote"
+ gdb_test_multiple "maint print target-stack" $test {
+ -re ".*emote serial target in gdb-specific protocol.*$gdb_prompt $" {
+ pass $test
+ return 1
+ }
+ -re "$gdb_prompt $" {
+ pass $test
+ }
+ }
+ return 0
+}
+
+if ![gdb_is_target_remote] {
+ return -1
+}
+
+if ![gdb_target_supports_trace] {
+ unsupported "Current target does not support trace"
+ return -1;
+}
+
+# Run a trace session, stop it, and then inspect the resulting trace
+# frame (IOW, returns while tfind mode is active).
+proc prepare_for_trace_disassembly { } {
+ global gdb_prompt
+ gdb_breakpoint "end"
+
+ gdb_test "trace subr" "Tracepoint .*" \
+ "tracepoint at subr"
+
+ gdb_trace_setactions "define action" \
+ "" \
+ "collect parm" "^$"
+
+ 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 -1
+set test "probe for GDBserver"
+gdb_test_multiple "monitor help" $test {
+ -re "The following monitor commands are supported.*debug-hw-points.*remote-debug.*GDBserver.*$gdb_prompt $" {
+ set is_gdbserver 1
+ pass $test
+ }
+ -re "$gdb_prompt $" {
+ set is_gdbserver 0
+ pass $test
+ }
+}
+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)"
+ }
+ }
+ }
+ }
+}
projects / binutils-gdb.git / commitdiff